Self-lubricating wear-resistant worm
By designing an oil reservoir and an opening/closing structure for the support tube and support shaft on the worm gear, automatic lubrication of the worm gear is achieved, solving the problems of worm gear wear and unstable force transmission, and extending the lubrication cycle.
Patent Information
- Application Number
- CN202520427575.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing worm gears are prone to wear when lacking grease, leading to unstable force transmission. Furthermore, they require manual and regular grease replenishment, making it difficult to guarantee the wear resistance cycle.
A self-lubricating and wear-resistant worm gear was designed. The oil storage cavity is formed by the support tube and the support shaft. The grease is automatically output to the surface of the helical teeth when the worm gear rotates through the opening and closing structure, so as to achieve automatic lubrication and avoid wear.
It achieves automatic lubrication of the worm gear during rotation, extends the lubrication cycle, ensures the stability and wear resistance of force transmission, and reduces the frequency of manual maintenance.
Smart Images
Figure CN223708470U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to worm field especially a kind of self-lubricating wear-resistant worm. BACKGROUND
[0002] Worm gear structure is often used to transmit the movement and power between two staggered shafts, when the worm rotates, the spiral tooth on the surface of the worm will be engaged with the gear on the worm wheel, thereby driving the worm wheel to rotate, so when the worm rotates, the spiral tooth on the surface of the worm will be in contact and friction with the gear on the worm wheel, if the two cannot be lubricated in time, it is easy to wear, and in actual use, a certain amount of lubricating grease is applied on the surface of the spiral tooth, which plays a lubricating role, when the lubricating grease is consumed, new lubricating grease needs to be added in time, but this adding method leads to short wear-resistant period, and the staff needs to add lubricating grease regularly, if the adding time is missed, the spiral tooth of the worm will be worn due to lack of lubricating grease, and as the spiral tooth wears, the gap between the spiral tooth on the surface of the worm and the gear of the worm wheel becomes larger when they are engaged, which leads to unstable force transmission. SUMMARY
[0003] The utility model solves the prior art problem to provide a kind of self-lubricating wear-resistant worm, it can be automatically lubricated when worm rotates, effectively avoid the wear caused by the long-term engagement and friction between the spiral tooth on the surface of the worm and the gear of the worm wheel, and ensure the stability of force transmission.
[0004] The utility model solves the above technical problem by the following technical scheme:
[0005] The utility model discloses a kind of self-lubricating wear-resistant worm, including stem, the stem is composed of spiral tooth part and the shaft body part being positioned on the left and right sides of spiral tooth part;Spiral tooth part outer wall is equipped with spiral tooth;The center hole that is axially penetrated itself is equipped in the center of spiral tooth part;Support tube matched with it is equipped in the center hole;Support tube is equipped with coaxial support shaft in it;The side wall of one side of the shaft body part opposite with support shaft is equipped with a certain position hole, support shaft end portion is clamped in the position hole;Support tube inner wall and support shaft outer wall have oil storage cavity between them, left and right two shaft body parts left and right two ends port of oil storage cavity are sealed;Spiral tooth part outer wall is equipped with a lubricating hole that is penetrated with center hole;Support tube inner wall is equipped with an installation hole that is penetrated with lubricating hole;The installation hole is equipped with matched opening and closing structure with it;Support shaft outer wall is equipped with a auxiliary groove coaxial with opening and closing hole;The auxiliary groove is equipped with matched auxiliary structure with opening and closing structure.
[0006] The opening and closing structure comprises an opening and closing seat screwed into the mounting hole; the opening and closing seat is centrally provided with an axial extension hole extending through the opening and closing seat; the outer end of the extension hole is screwed with an outer seat plate matched with the extension hole; the inner end of the extension hole is screwed with an inner seat plate matched with the extension hole; the outer seat plate is provided with a plurality of oil outlet holes uniformly distributed thereon; the outer seat plate is centrally provided with a guide hole; the inner seat plate is centrally provided with an opening and closing hole coaxial with the guide hole; the extension hole is provided with an opening and closing ball; the outer end of the opening and closing ball is provided with a guide rod matched with the guide hole; a spring is arranged outside the guide rod between the outer seat plate and the opening and closing ball; the inner end of the opening and closing ball is provided with a push rod, and the end of the push rod extends into the oil storage cavity through the opening and closing hole; the push rod has an oil passage gap between the outer wall of the push rod and the inner wall of the opening and closing hole.
[0007] The diameter of the oil outlet hole gradually decreases towards the opening and closing ball.
[0008] The side wall of the inner seat plate opposite to the auxiliary groove is provided with a plurality of clamping grooves uniformly distributed thereon.
[0009] The auxiliary structure comprises a threaded hole arranged at the center of the bottom of the auxiliary groove; the auxiliary groove is provided with a first auxiliary seat matched with the bottom of the auxiliary groove; the outer end surface of the first auxiliary seat is centrally provided with a limiting hole; the inner end surface of the first auxiliary seat is centrally provided with a movable hole penetrating through the limiting hole, and the diameter of the movable hole is smaller than that of the limiting hole; the limiting hole is provided with a limiting block matched with the limiting hole; the inner end surface of the limiting block is centrally provided with a fixing rod screwed into the threaded hole through the movable hole; the outer end surface of the first auxiliary seat is provided with a second auxiliary seat matched with the first auxiliary seat; the inner end surface of the second auxiliary seat is centrally provided with a threaded joint screwed into the limiting hole; the outer end surface of the second auxiliary seat is provided with a rubber head matched with the second auxiliary seat; and the inner end of the rubber head is matched with the push rod.
[0010] The outer wall of the first auxiliary seat is provided with a first tapered surface with a narrow outer part and a wide inner part; the outer wall of the second auxiliary seat is provided with a second tapered surface with a narrow outer part and a wide inner part; the outer wall of the rubber head is provided with a third tapered surface with a narrow outer part and a wide inner part; and the first tapered surface, the second tapered surface and the third tapered surface are coplanar.
[0011] The rubber head is internally provided with a clamping groove; the inner end surface of the rubber head matched with the second auxiliary seat is centrally provided with a clamping hole penetrating through the clamping groove; the outer end surface of the second auxiliary seat is centrally provided with a clamping rod matched with the clamping hole; and the end of the clamping rod is provided with a clamping head matched with the clamping groove.
[0012] The outer edge of the shaft body part extends a limiting cover outside the end of the helical tooth part; the left and right ends of the supporting shaft are provided with first through holes penetrating through the supporting shaft; the upper and lower sides of the outer wall of the end of the supporting pipe are provided with second through holes penetrating through the first through holes; the upper and lower sides of the outer wall of the end of the helical tooth part are provided with third through holes penetrating through the second through holes; the upper and lower sides of the outer wall of the limiting cover are provided with fourth through holes penetrating through the third through holes; a limiting rod penetrates through the first through holes, the second through holes, the third through holes and the fourth through holes, and the upper and lower ends of the limiting rod are screwed with fastening nuts abutting against the outer wall of the limiting cover.
[0013] The self-lubricating wear-resistant worm has the advantages that:
[0014] Compared with the prior art, the self-lubricating wear-resistant worm adopting the structure can effectively fill the center hole in the center of the helical tooth part through the supporting pipe and the supporting shaft, ensure the strength of the helical tooth part after the center hole is arranged through the high strength of the supporting pipe and the supporting shaft, store a large amount of lubricating grease between the inner wall of the supporting pipe and the outer wall of the supporting shaft, output the lubricating grease in the oil storage cavity to the outer wall of the helical tooth part through the opening and closing structure when the worm rotates, finally cover the helical tooth surface of the helical tooth part through the continuous meshing of the outer wall of the helical tooth part and the gear teeth of the worm wheel, complete the automatic lubrication work, effectively avoid the wear of the gear teeth of the worm wheel caused by forgetting to lubricate regularly when the helical tooth of the worm drives the gear teeth to rotate, and ensure the stability of force transmission. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a sectional view of the self-lubricating wear-resistant worm;
[0016] Figure 2 is Figure 1 an enlarged view of A of DETAILED DESCRIPTION
[0017] The application will be further described in detail below in combination with the drawings and specific embodiments:
[0018] Please refer to Figure 1 , Figure 2The utility model provides a kind of self-lubricating wear-resistant worm, including stem 1, the stem 1 is composed of helical tooth part 101 and the shaft body part 102 being located helical tooth part 101 left and right two sides;The outer wall of the helical tooth part 101 is equipped with helical tooth 2;The center of the helical tooth part 101 is equipped with a center hole 3 that is axially through itself;The center hole 3 is equipped with the support tube 4 matched with it in;The support tube 4 is equipped with the support shaft 5 coaxial with it in;The side wall of the shaft body part 102 opposite with support shaft 5 is equipped with a certain positioning hole 6, and support shaft 5 end portion is clamped in positioning hole 6;Support shaft 5 outer wall and support tube 4 inner wall between there is oil storage cavity 7, and left and right two shaft body parts 102 left and right two ends of oil storage cavity 7 end port are shielded and sealed;The outer wall of the helical tooth part 101 is equipped with a lubricating hole 8 that is through with center hole 3;The inner wall of the support tube 4 is equipped with a mounting hole 46 that is through with lubricating hole;The mounting hole 46 is equipped with the opening and closing structure matched with it in;Support shaft 5 outer wall is equipped with a auxiliary groove 10 coaxial with opening and closing hole 9;The auxiliary groove 10 is equipped with the auxiliary structure matched with opening and closing structure in.
[0019] The opening and closing structure includes the opening and closing seat 11 threaded in mounting hole 46;The opening and closing seat 11 center is equipped with a telescopic hole 12 that is axially through itself;The outer end hole of the telescopic hole 12 is threaded with the outer seat plate 13 matched with it;The inner end hole of the telescopic hole 12 is threaded with the inner seat plate 14 matched with it;The outer seat plate 13 is equipped with a plurality of oil outlet holes 15 evenly distributed on it;The center of the outer seat plate 13 is equipped with a guide hole 16;The center of the inner seat plate 14 is equipped with the opening and closing hole 9 coaxial with guide hole 16;The telescopic hole 12 has an opening and closing ball 17 in it, and the opening and closing ball 17 blocks and seals the outer end hole of the opening and closing hole 9;The outer end of the opening and closing ball 17 is equipped with a guide rod 18 matched with guide hole 16;A spring 19 is arranged outside the guide rod 18 between the outer seat plate 13 and the opening and closing ball 17;The inner end of the opening and closing ball 17 is equipped with a push rod 20, and the end of the push rod 20 passes through the opening and closing hole 9 and enters the oil storage cavity 7;The push rod 20 outer wall and opening and closing hole 9 inner wall between there is oil passage gap 21.
[0020] The diameter of the oil outlet hole 15 gradually decreases towards the opening and closing ball 17.
[0021] The side wall of the inner seat plate 14 opposite with auxiliary groove 10 is equipped with a plurality of clamping grooves 22 evenly distributed in a circle.
[0022] The auxiliary structure comprises a threaded hole 23 arranged at the center of the bottom of the auxiliary groove 10; the auxiliary groove 10 is internally provided with a first auxiliary seat 24 abutting the bottom of the auxiliary groove 10; the outer end surface of the first auxiliary seat 24 is centrally provided with a limiting hole 25; the inner end surface of the first auxiliary seat 24 is centrally provided with a movable hole 26 penetrating the limiting hole 25, and the diameter of the movable hole 26 is smaller than that of the limiting hole 25; the limiting hole 25 is internally provided with a limiting block 27 matched therewith; the inner end surface of the limiting block 27 is centrally provided with a fixing rod 28 which is screwed into the threaded hole 23 through the movable hole 26; the outer end surface of the first auxiliary seat 24 is provided with a second auxiliary seat 29 abutting therewith; the inner end surface of the second auxiliary seat 29 is centrally provided with a screw joint 30 screwed into the orifice of the limiting hole 25; the outer end surface of the second auxiliary seat 29 is provided with a rubber head 31 abutting therewith, and the rubber head 31 abuts the inner end of the push rod 20.
[0023] The outer wall of the first auxiliary seat 24 is provided with a first taper surface 32 which is narrow on the outside and wide on the inside; the outer wall of the second auxiliary seat 29 is provided with a second taper surface 33 which is narrow on the outside and wide on the inside; the outer wall of the rubber head 31 is provided with a third taper surface 34 which is narrow on the outside and wide on the inside; the first taper surface 32, the second taper surface 33 and the third taper surface 34 are coplanar.
[0024] The inner portion of the rubber head 31 is provided with a clamping groove 35; the inner end surface of the rubber head 31 abutting the second auxiliary seat 29 is centrally provided with a clamping hole 36 penetrating the clamping groove 22; the outer end surface of the second auxiliary seat 29 is centrally provided with a clamping rod 37 matched with the clamping hole 36; the end of the clamping rod 37 is provided with a clamping head 38 matched with the clamping groove.
[0025] The outer edge of the shaft body 102 extends towards the center of the helical tooth portion 101 and is provided with a limiting cover 39 sleeved on the outer end of the helical tooth portion 101; the left and right ends of the supporting shaft 5 are both provided with a first through hole 40 penetrating the supporting shaft 5 in the radial direction; the upper and lower sides of the outer wall of the end of the supporting pipe 4 are both provided with a second through hole 41 penetrating the first through hole 40; the upper and lower sides of the outer wall of the end of the helical tooth portion 101 are both provided with a third through hole 42 penetrating the second through hole 41; the upper and lower sides of the outer wall of the limiting cover 39 are both provided with a fourth through hole 43 penetrating the third through hole 42; a limiting rod 44 simultaneously penetrates the first through hole 40, the second through hole 41, the third through hole 42 and the fourth through hole 43, and the upper and lower ends of the limiting rod 44 are both screwed with fastening nuts 45 abutting the outer wall of the limiting cover 39.
[0026] The use method of the utility model is as follows:
[0027] When the helical tooth part 101 is connected with the shaft body part 102 on the left and right sides, the connection of one of the shaft body parts 102 can be completed first, at this time, the center hole 3 at the opening of the end of the helical tooth part 101 not connected with the shaft body part 102 is in an open state, then the grease can be added into the grease storage cavity 7 through the right end port of the grease storage cavity 7, when the addition of the grease is completed, the grease storage cavity 7 is filled with the grease, then the shaft body parts 102 on the left and right sides are connected to the helical tooth part 101 on the left and right ends, at this time, the grease storage cavity 7 becomes a closed space.
[0028] When the helical tooth part 101 of the worm rotates, the helical tooth part 101 generates a centrifugal force, which simultaneously acts on the opening and closing ball 17 and the first auxiliary seat 24 and the second auxiliary seat 29, when the opening and closing ball 17 is affected by the centrifugal force and moves outward, the opening and closing ball 17 approaches the outer seat plate and compresses the spring 19, at the same time, the opening and closing ball 17 is away from the inner seat plate 14, the opening and closing ball 17 no longer blocks and seals the outer end opening of the opening and closing hole 9, and a part of the grease flows into the telescopic hole 12 along the oil passage gap 21, then flows to the outer wall of the helical tooth part 101 through the oil outlet hole 15 and the lubricating hole 8 in turn, and finally covers the surface of the helical tooth 2 of the helical tooth part 101, so that the helical tooth 2 is fully lubricated, when the worm stops rotating, the opening and closing ball 17 is reset under the elastic force of the spring 19, and the outer end opening of the opening and closing hole 9 is blocked and sealed again, so as to avoid the waste of the leakage of the grease in the non-rotating state of the worm.
[0029] When the first auxiliary seat 24 and the second auxiliary seat 29 are affected by the centrifugal force and move outward, the first auxiliary seat 24 and the second auxiliary seat 29 move stably along the track of the fixed rod 28, and at the same time, the push rod 20 is pushed outward through the rubber head 31, so as to ensure that the opening and closing ball 17 is away from the inner seat plate 14 and the opening of the opening and closing hole 9 is opened, so that the grease can seep to the outer wall of the helical tooth part 101, when the opening and closing ball 17 resets the push rod 20, the first auxiliary seat 24 and the second auxiliary seat 29 can be reset synchronously, and the existence of the limiting block 27 can avoid that the travel of the first auxiliary seat 24 and the second auxiliary seat 29 is too large when moving outward, so as to ensure the normal movement of the opening and closing ball 17 and avoid the situation that a large amount of grease flows out due to the opening of the opening and closing hole 9 being too large.
[0030] The utility model discloses can fill the center hole 3 of the center of helical tooth part 101 effectively through support pipe 4 and support shaft 5, guarantee the intensity of helical tooth part 101 after setting center hole 3 using the high strength of support pipe 4 and support shaft 5, and can store a large amount of lubricating grease between the inner wall of support pipe 4 and the outer wall of support shaft 5, when the worm rotates, the opening and closing structure will automatically output the lubricating grease in oil storage cavity 7 to the outer wall of helical tooth part 101, with the helical tooth 2 surface of helical tooth part 101 being covered with the tooth of worm wheel constantly engaged, finally, complete automatic lubrication work, effectively avoid the abrasion of the tooth of worm wheel when the tooth of worm rotates, and a large amount of lubricating grease is stored in the oil storage cavity, which can prolong the lubrication period to the greatest extent, thereby effectively ensuring the wear-resistant period.
[0031] The diameter of the oil outlet hole 15 gradually decreases towards the opening and closing ball 17, and this structure design can limit the flow rate and amount of lubricating grease flowing outward through the continuously narrowing aperture of the oil outlet hole 15, thereby further prolonging the wear-resistant period while ensuring the lubrication effect.
[0032] The side wall of the inner seat plate 14 opposite to the auxiliary groove 10 is provided with a plurality of clamping grooves 22 uniformly distributed in a circle, so that the inner seat plate 14 can be rotated by two clamping grooves 22 for the staff, facilitating the disassembly and assembly of the inner seat plate 14.
[0033] The outer wall of the first auxiliary seat 24 is provided with a first taper surface 32 which is narrow outside and wide inside, the outer wall of the second auxiliary seat 29 is provided with a second taper surface 33 which is narrow outside and wide inside, and the outer wall of the rubber head 31 is provided with a third taper surface 34 which is narrow outside and wide inside, the first taper surface 32, the second taper surface 33 and the third taper surface 34 are coplanar, and the first taper surface 32, the second taper surface 33 and the third taper surface 34 form a sharp structure when the first auxiliary seat 24, the second auxiliary seat 29 and the rubber head 31 are fixed, facilitating the movement of the lubricating grease in the oil storage cavity outward.
[0034] The rubber head 31 is provided with a clamping groove 35 inside, the inner end face of the rubber head 31 is provided with a clamping hole 36 which is in communication with the clamping groove 22, the outer end face of the second auxiliary seat 29 is provided with a clamping rod 37 which is matched with the clamping hole 36, and the end of the clamping rod 37 is provided with a clamping head 38 which is matched with the clamping groove 35, so that the rubber head 31 can be disassembled and assembled, thereby facilitating the replacement of the rubber head 31.
[0035] The limiting rod 44 passes through the first perforation 40, the second perforation 41, the third perforation 42 and the fourth perforation 43, and the upper and lower ends of the limiting rod 44 are screwed with the fastening nuts 45 which are in close contact with the outer wall of the limiting cover 39. This fixing mode not only can ensure the stability of the connection between the helical tooth part 101 and the shaft body part 102, but also is convenient for disassembly and assembly between the two, and at the same time, the positioning between the helical tooth part 101, the supporting pipe 4 and the supporting shaft 5 can be realized, so as to ensure the coaxiality of the lubricating hole 8, the telescopic hole 12 and the auxiliary groove 10.
Claims
1. A self-lubricating wear-resistant worm gear, comprising a shaft, characterized in that: The rod body consists of a helical tooth section and shaft sections located on the left and right sides of the helical tooth section. The outer wall of the helical tooth section has helical teeth. The center of the helical tooth section has an axially penetrating central hole. A matching support tube is located within the central hole. A support shaft, coaxial with the support tube, is located within the support tube. A positioning hole is located on the side wall of the shaft section opposite to the support shaft, and the end of the support shaft is engaged in the positioning hole. An oil storage cavity is located between the outer wall of the support shaft and the inner wall of the support tube, and the left and right shaft sections on both sides seal the left and right ends of the oil storage cavity. A lubrication hole, communicating with the central hole, is located on the outer wall of the helical tooth section. An installation hole, communicating with the lubrication hole, is located on the inner wall of the support tube. A matching opening and closing structure is located within the installation hole. An auxiliary groove, coaxial with the opening and closing hole, is located on the outer wall of the support shaft. The auxiliary slot is equipped with an auxiliary structure that matches the opening and closing structure.
2. The self-lubricating wear-resistant worm gear according to claim 1, characterized in that: The opening and closing structure includes an opening and closing seat screwed into a mounting hole; the opening and closing seat has an axially penetrating telescopic hole at its center; a matching outer seat plate is screwed to the outer end of the telescopic hole; a matching inner seat plate is screwed to the inner end of the telescopic hole; the outer seat plate has several evenly distributed oil outlet holes; the outer seat plate has a guide hole at its center; the inner seat plate has an opening and closing hole coaxial with the guide hole at its center; an opening and closing ball is provided inside the telescopic hole, which blocks and seals the outer end of the opening and closing hole; a guide rod matching the guide hole is provided at the outer end of the opening and closing ball; a spring is provided between the outer seat plate and the opening and closing ball, outside the guide rod; a push rod is provided at the inner end of the opening and closing ball, and the end of the push rod passes through the opening and closing hole into the oil storage chamber; there is an oil passage gap between the outer wall of the push rod and the inner wall of the opening and closing hole.
3. The self-lubricating wear-resistant worm gear according to claim 2, characterized in that: The diameter of the oil outlet gradually decreases towards the opening and closing ball.
4. The self-lubricating wear-resistant worm gear according to claim 2, characterized in that: The inner seat plate has several circumferentially evenly distributed positioning grooves on the side wall opposite to the auxiliary groove.
5. The self-lubricating wear-resistant worm gear according to claim 1, characterized in that: The auxiliary structure includes a screw hole at the center of the bottom of the auxiliary groove; a first auxiliary seat that fits into the bottom of the auxiliary groove is provided inside the auxiliary groove; a limiting hole is provided at the center of the outer end face of the first auxiliary seat; a movable hole communicating with the limiting hole is provided at the center of the inner end face of the first auxiliary seat, the diameter of the movable hole being smaller than the diameter of the limiting hole; a limiting block matching it is provided inside the limiting hole; a fixing rod is provided at the center of the inner end face of the limiting block, the fixing rod being screwed into the screw hole through the movable hole; a second auxiliary seat that fits into the outer end face of the first auxiliary seat; a screw connector that is screwed into the opening of the limiting hole is provided at the center of the inner end face of the second auxiliary seat; a rubber head that fits into the outer end face of the second auxiliary seat, the rubber head fitting into the inner end of the push rod.
6. The self-lubricating wear-resistant worm gear according to claim 5, characterized in that: The outer wall of the first auxiliary seat is provided with a first conical surface that is narrow on the outside and wide on the inside; the outer wall of the second auxiliary seat is provided with a second conical surface that is narrow on the outside and wide on the inside; the outer wall of the rubber head is provided with a third conical surface that is narrow on the outside and wide on the inside; the first conical surface, the second conical surface and the third conical surface are all coplanar.
7. A self-lubricating wear-resistant worm gear according to claim 6, characterized in that: The rubber head has a groove inside; the inner end face of the rubber head that fits with the second auxiliary seat has a hole that communicates with the groove; the outer end face of the second auxiliary seat has a locking rod that matches the locking hole; the end of the locking rod has a locking head that matches the groove.
8. The self-lubricating wear-resistant worm gear according to claim 1, characterized in that: The outer edge of the shaft extends toward the center of the helical teeth to form a limiting cover outside the end of the helical teeth; both the left and right ends of the support shaft are provided with a first through hole that penetrates it radially; both the upper and lower sides of the outer wall of the end of the support tube are provided with a second through hole that communicates with the first through hole; both the upper and lower sides of the outer wall of the end of the helical teeth are provided with a third through hole that communicates with the second through hole; both the upper and lower sides of the outer wall of the limiting cover are provided with a fourth through hole that communicates with the third through hole; a limiting rod passes through the first through hole, the second through hole, the third through hole, and the fourth through hole simultaneously, and both the upper and lower ends of the limiting rod are screwed with fastening nuts that fit against the outer wall of the limiting cover.