Meshing center distance adjusting structure suitable for worm gear and worm

Abstract

The utility model belongs to the technical field of worm gears and worms, and discloses a meshing center distance adjusting structure suitable for a worm gear and a worm, which comprises a worm gear and a worm, one end of the worm is provided with a first tapered roller bearing with a fixed position, the other end of the worm is provided with a second tapered roller bearing, and the outside of the second tapered roller bearing is provided with an adjusting plug with an adjustable position; the adjusting plug rotates, the center of the second tapered roller bearing deviates, and the meshing center distance between the worm and the worm gear is increased. Through the deviation of the inside and outside of the adjusting plug, the deviation degree of the inside and outside can be changed by rotating the adjusting plug by different angles, and the angle of the worm is further adjusted, so that the meshing clearance can be adjusted without changing the center distance and the size of the worm gear and the worm.

Description

Technical Field

[0001] The utility model relates to the technical field of worm gears, and more specifically to a meshing center distance adjustment structure suitable for worm gears. Background Art

[0002] In the field of industrial machinery, worm gears are widely used due to their large transmission ratio and compact structure. For example, in reducers, worm gears can achieve a large reduction ratio, thus meeting the needs of certain mechanical equipment that requires low speed and high torque. In addition, worm gears are also commonly used in various transmission devices, such as elevators, winches, etc.

[0003] The meshing clearance of the worm gear directly affects the transmission accuracy and efficiency of the worm gear pair. The required meshing clearance is usually adjusted through the following methods: 1. Changing the center distance of the mounting housing; 2. Changing the feed amount of the worm wheel / gear, that is, the tooth parameters; 3. Changing the parameters of the worm.

[0004] Although there are many methods to adjust the meshing clearance of worm gears, in general, the corresponding parts need to be reprocessed to achieve the required meshing clearance, which is time-consuming and labor-intensive. The meshing clearance cannot be adjusted without changing the worm gear parameters and the center distance of the housing. In view of this, we propose a meshing center distance adjustment structure suitable for worm gears. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The utility model aims to provide a meshing center distance adjustment structure suitable for a worm gear, so as to solve the problem in the above background technology that the corresponding parts need to be re-processed to achieve the required meshing clearance.

[0007] 2. Technical solution

[0008] The invention is applicable to the meshing center distance adjustment structure of the worm gear, including the worm gear,

[0009] and a worm, one end of the worm is provided with a fixed tapered roller bearing 1, the other end of the worm is provided with a tapered roller bearing 2, and an adjusting plug whose position can be adjusted is installed outside the tapered roller bearing 2;

[0010] When the adjusting plug rotates, the center of tapered roller bearing 2 shifts, and the meshing center distance between the worm and the worm wheel increases.

[0011] In a preferred embodiment, the worm comprises a worm member, a fixed end and an adjusting end, the worm member and the worm wheel are meshed with each other, one set of tapered roller bearings is installed outside the fixed end, and the second set of tapered roller bearings is installed outside the adjusting end.

[0012] In a preferred embodiment, the rotation range of the adjusting plug is 0-180°.

[0013] In a preferred embodiment, the adjusting plug includes an adjusting plug body, an inner mounting hole and an outer mounting hole, the inner mounting hole is opened on the side of the adjusting plug body facing the worm gear, the tapered roller bearing 2 is located inside the inner mounting hole, and the outer mounting hole is opened on the side of the adjusting plug body away from the inner mounting hole, and the central axes of the inner mounting hole and the outer mounting hole are eccentrically arranged.

[0014] In a preferred embodiment, the regulating plug further comprises fixing holes, and a plurality of the fixing holes are equidistantly distributed along the outer circumference of the regulating plug body to adjust the fixing angle of the regulating plug.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The utility model adjusts the deviation of the inner and outer spaces of the plug. Compared with the prior art, the deviation of the inner and outer spaces can be changed by rotating the adjusting plug at different angles, and the worm angle can be further adjusted, so that the meshing clearance can be adjusted without changing the center distance and size of the worm gear.

[0018] 2. The utility model uses the fixing hole on the surface of the adjusting plug to fix the adjusted angle of the adjusting plug after the adjusting plug changes its angle.

[0019] 3. The utility model does not need to process the worm, and the meshing clearance of the worm wheel and worm gear can be adjusted by changing the angle of the worm without changing the parameters of the worm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model on the right side;

[0021] Figure 2 This is a schematic diagram of the AA section structure of the overall structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the overall structure of the worm of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the regulating plug of the utility model;

[0024] Figure 5 This is a front view schematic diagram of the regulating plug of the utility model;

[0025] Figure 6 It is a schematic diagram of the BB cross-sectional structure of the regulating plug of the utility model.

[0026] Explanation of the numbers in the figure: 1. Worm; 2. Worm wheel; 3. Adjusting plug; 4. Tapered roller bearing 1; 5. Tapered roller bearing 2;

[0027] 11. Worm gear; 12. Fixed end; 13. Adjusting end;

[0028] 31. Adjusting plug body; 32. Inner mounting hole; 33. Outer mounting hole; 34. Fixing hole. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] See also Figure 1-6 The utility model provides a meshing center distance adjustment structure suitable for worm gears, mainly comprising a worm 1 and a worm wheel 2, wherein the worm 1 and the worm wheel 2 are meshed, wherein one end of the worm 1 is mounted with a tapered roller bearing 1 4 of a fixed position, and the other end of the worm 1 is mounted with a tapered roller bearing 2 5, and an adjusting plug 3 whose position can be adjusted is installed outside the tapered roller bearing 2 5, the end of the worm 1 mounted with the tapered roller bearing 1 4 is fixed, and the end of the worm 1 mounted with the tapered roller bearing 2 5 can be offset by rotating with the adjusting plug 3, and the meshing clearance is controlled by adjusting the actual meshing center distance of the worm 1 and the worm wheel 2 in the housing;

[0033] Please refer to the instruction manual Figure 3, the worm 1 in this embodiment is specifically described, the worm 1 includes a worm member 11, a fixed end 12 and an adjusting end 13, the worm member 11 and the worm wheel 2 are meshed, the tapered roller bearing 1 4 is sleeved and installed outside the fixed end 12, and the tapered roller bearing 2 5 is sleeved and installed outside the adjusting end 13;

[0034] Continue to refer to the instruction manual Figure 4-6 , the regulating plug 3 in this embodiment is specifically described. The regulating plug 3 includes a regulating plug body 31, an inner mounting hole 32, an outer mounting hole 33 and a fixing hole 34. The inner mounting hole 32 is opened on the side of the regulating plug body 31 facing the worm member 11, and the tapered roller bearing 25 is located inside the inner mounting hole 32. The outer mounting hole 33 is opened on the side of the regulating plug body 31 away from the inner mounting hole 32. The central axes of the inner mounting hole 32 and the outer mounting hole 33 are eccentrically arranged. A plurality of fixing holes 34 are equidistantly distributed along the outer circumference of the regulating plug body 31 to adjust the fixing angle of the regulating plug 3. The regulating plug body 31 and the inner mounting hole 32 are eccentric, and the starting point of the angle is marked on the regulating plug 3 by coding.

[0035] Please refer to Figure 3 , 6 Specifically, when the tooling is used to rotate the adjusting plug 3 on one side, the center of the tapered roller bearing 2 5 is offset, resulting in a larger meshing center distance between the worm 1 and the worm wheel 2. The rotation range of the adjusting plug 3 is 0°-180°, and the meshing clearance can be adjusted without changing the center distance and size of the worm wheel.

[0036] Working principle: When the adjusting plug 3 rotates at the zero angle, the end of the worm 1 close to the tapered roller bearing 1 4 is fixed. At this time, when the adjusting plug 3 is rotated by the tooling on the side of the tapered roller bearing 2 5, the adjusting plug body 31 and the inner mounting hole 32 are eccentric. Due to the center offset of the tapered roller bearing 2 5, please refer to Figure 3 , resulting in a larger meshing center distance between the worm 1 and the worm wheel 2, and, since the outer mounting hole 33 is a symmetrical shape, the limited rotation range of the adjusting plug 3 is 0°-180°.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A meshing center distance adjustment structure suitable for worm gears, characterized in that: comprising a worm gear (2), A worm (1), a tapered roller bearing 1 (4) whose position is fixed is installed at one end of the worm (1), a tapered roller bearing 2 (5) is installed at the other end of the worm (1), and an adjusting plug (3) whose position can be adjusted is installed outside the tapered roller bearing 2 (5); The adjusting plug (3) rotates, the center of the tapered roller bearing 2 (5) shifts, and the meshing center distance between the worm (1) and the worm wheel (2) increases.

2. The meshing center distance adjustment structure for worm gears according to claim 1 is characterized in that: The worm (1) comprises a worm member (11), a fixed end (12) and an adjustable end (13); the worm member (11) and the worm wheel (2) are meshed with each other; the first tapered roller bearing (4) is sleeved and mounted outside the fixed end (12); and the second tapered roller bearing (5) is sleeved and mounted outside the adjustable end (13).

3. The meshing center distance adjustment structure for worm gears according to claim 2 is characterized in that: The rotation range of the regulating plug (3) is 0°-180°.

4. The meshing center distance adjustment structure for worm gears according to claim 3 is characterized in that: The regulating plug (3) comprises a regulating plug body (31), an inner mounting hole (32) and an outer mounting hole (33); the inner mounting hole (32) is provided on a side of the regulating plug body (31) facing the worm member (11); the second tapered roller bearing (5) is located inside the inner mounting hole (32); the outer mounting hole (33) is provided on a side of the regulating plug body (31) facing away from the inner mounting hole (32); and the central axes of the inner mounting hole (32) and the outer mounting hole (33) are eccentrically arranged.

5. The meshing center distance adjustment structure for worm gears according to claim 4 is characterized in that: The regulating plug (3) further comprises fixing holes (34), and a plurality of the fixing holes (34) are evenly distributed along the outer circumference of the regulating plug body (31) to adjust the fixing angle of the regulating plug (3).

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