Double-layer overlapping type gear vibration reduction structure

Abstract

An outer wheel body is made of damping alloy, a gear tooth comprises a tooth body and a tooth shell arranged on the outer surface of the tooth body in a sleeving mode, the length of the tooth body is the same as that of the tooth shell in the axial direction of the gear body, the tooth body and the outer wheel body are integrally machined, the tooth shell is made of alloy carburizing steel, and a limiting protruding strip is arranged in the middle of the tooth top face. The limiting protruding strip extends in the axial direction of the wheel body, the limiting protruding strip is provided with two limiting parts which are symmetrical in the left-right direction and protrude outwards, two tooth shells are symmetrically installed on each tooth body relative to the limiting protruding strip, the limiting parts are matched with the edges of the corresponding tooth shells in a limiting mode, and each tooth body comprises a tooth top face and tooth side faces which are symmetrical in the left-right direction. A plurality of second T-shaped sliding grooves are formed in the tooth side face in the axial direction of the gear body at intervals, the second T-shaped sliding grooves extend in the width direction of the tooth side face, one end of each second T-shaped sliding groove penetrates through the tooth top face, matched second T-shaped sliding tables are arranged on the inner surface of the gear shell and correspond to the second T-shaped sliding grooves in a one-to-one mode, and the second T-shaped sliding tables are assembled in the second T-shaped sliding grooves in a sliding mode.

Description

TECHNICAL FIELD

[0001] The present application relates to a double-layer superimposed gear damping structure. BACKGROUND

[0002] Large gears used in mines will bear significant vibration, and the tooth surface wear problem is very prominent. For example, the crusher, because it needs to handle hard rock and large ore, etc., the external impact load is large, causing the gear to bear irregular vibration, plus the ore may contact the tooth surface, abrasive wear and impact wear will cause serious wear to the tooth surface, when the tooth surface wears to a certain extent, a new gear needs to be purchased and replaced. Since the large gear in the mine is expensive, it is difficult to transport and replace, and the overall replacement cost is high.

[0003] There are also some structures in the prior art that combine an inner layer of high-damping material with an outer layer of high-strength steel, relying on the high-damping inner layer to bear and consume vibration energy, and relying on the high-hardness outer layer to bear wear. The inner and outer layers are connected and fixed by diffusion welding or brazing connection. This method can improve the overall damping performance, but the tooth surface still needs to be replaced as a whole after wear, and cannot solve the technical problems of high cost and difficult transportation and replacement. SUMMARY

[0004] The purpose of the present application is to provide a double-layer superimposed gear damping structure to solve the technical problem that the existing large gear in the mine must be replaced after the tooth surface wears.

[0005] The technical scheme of the present application is as follows: the double-layer superimposed gear damping structure comprises a gear, the gear comprises a wheel body and a gear tooth, the wheel body comprises an inner wheel body and an outer wheel body which are mutually sleeved, the inner and outer wheel bodies are slidably connected through a first T-shaped sliding table and a first T-shaped sliding groove extending along the wheel body axis, the material of the inner wheel body is alloy carburizing steel, and the material of the outer wheel body is damping alloy. The gear tooth comprises a gear body and a gear shell sleeved on the outer surface of the gear body, the length of the gear body and the gear shell along the wheel body axis is the same, the gear body is integrally machined with the outer wheel body, the material of the gear shell is alloy carburizing steel, a limiting protrusion is arranged in the middle of the tooth top surface, the limiting protrusion extends along the wheel body axis, the limiting protrusion has two left and right symmetrical and outward protruding limiting portions, two gear shells are symmetrically installed on each gear body with respect to the limiting protrusion, and the limiting portions are respectively limited and matched with the edges of the corresponding gear shells. The gear body comprises a tooth top surface and left and right symmetrical tooth side surfaces, a plurality of second T-shaped sliding grooves are arranged on the tooth side surfaces in a spaced manner along the wheel body axis, the second T-shaped sliding grooves extend along the width direction of the tooth side surfaces, one end of the second T-shaped sliding groove penetrates the tooth top surface, and the inner surface of the gear shell is provided with a second T-shaped sliding table matched with the second T-shaped sliding groove one by one, and the second T-shaped sliding table is slidably assembled in the second T-shaped sliding groove.

[0006] The beneficial effects of the technical solution are as follows: when the gear housing needs to be replaced, the edge of the gear housing is first provided with a lifting force by a special tool to make the edge of the gear housing separate from the limiting part, and then the gear housing is slid along the length direction of the first T-shaped sliding groove to the tooth top surface direction, so that the worn gear housing is removed from the gear body, and the new gear housing is slid into the second T-shaped sliding groove through the second T-shaped sliding table, before sliding into place, the edge of the gear housing is knocked by a special tool to make it under the limiting part of the limiting convex strip, realizing the locking of the gear housing, and in the working process, the gear housing directly contacts with the matched gear, and since the force provided by the matched gear to the gear housing is mainly the force in the direction of pressing the gear body, only a small component force acts on the gear housing in the direction of separating from the gear body, at this time, a part is borne by the cooperation of the second T-shaped sliding groove and the second T-shaped sliding table, and a small part is borne by the cooperation of the limiting part and the edge of the gear housing, preventing the gear housing from separating from the gear body.

[0007] 1. The damaged gear housing can be replaced independently without the need to replace all, since the mating surfaces on both sides of each tooth are independently provided with a gear housing, and when the gear surface of the gear is worn, only the gear housing corresponding to the worn part needs to be replaced, without the need to replace all gear housings and gears, thereby reducing material waste, reducing cost and reducing maintenance workload;

[0008] 2. Easy and fast disassembly and assembly, low cost, since the connection of the gear housing and the gear body is mainly realized by the cooperation of the second T-shaped sliding groove and the second T-shaped sliding table and the cooperation of the limiting convex strip and the edge of the gear housing, only the gear housing and the limiting convex strip need to be cooperated or separated during the disassembly and assembly process, so that the second T-shaped sliding table of the gear housing can be smoothly slid into or out of the second T-shaped sliding groove of the gear body, and the operation is very simple, convenient and fast;

[0009] 3. Without the need to replace the gear as a whole, only the damaged gear housing needs to be replaced, saving materials, transportation, lifting, purchase and other costs;

[0010] 4. The wheel shaft and the gear housing are made of rigid material, the outer wheel body and the gear body are made of damping material, the outer wheel body and the gear body dissipate vibration energy as an intermediate link, reducing the vibration amount transmitted to the rotating shaft, and the gear surface can withstand direct contact wear;

[0011] 5. The cooperation of the second T-shaped sliding groove and the second T-shaped sliding table provides the gear housing with radial and circumferential multidirectional bearing capacity to prevent the gear housing from separating due to the component force in the gear transmission process;

[0012] 6. The limiting convex strip covers the entire tooth width, can have the maximum limiting contact area, and can improve the limiting capacity as much as possible to prevent the gear housing from falling off;

[0013] 7. Each tooth is provided with two half-tooth-shaped tooth shells, which can prevent over-positioning, improve positioning accuracy, and make the tooth shell precisely fit the surface of the tooth body.

[0014] On the basis of the above scheme, further improvements are as follows: the tooth root surface is formed between any adjacent teeth, the edges of the two tooth shells corresponding to the two sides of the tooth root surface are respectively provided with a stop bar, the stop bar is provided with an outwardly protruding stop portion, and the stop portion is in stop cooperation with the edge of the corresponding tooth shell. The setting of the stop bar provides limiting for the lower edge of the tooth shell, further improves the fixing strength of the tooth shell, and avoids the tooth shell from being separated from the tooth body.

[0015] On the basis of the above scheme, further improvements are as follows: the two stop bars on each tooth root surface are integrally machined.

[0016] On the basis of the above scheme, further improvements are as follows: the edge of the tooth shell corresponding to the limiting protruding strip is provided with a dismounting threaded hole, and the tooth shell can be knocked out of the limiting portion by rotating a bolt in the dismounting threaded hole. The setting of the dismounting threaded hole can greatly facilitate the dismounting of the tooth shell.

[0017] On the basis of the above scheme, further improvements are as follows: the material of the outer wheel body and the tooth body is manganese copper-based alloy.

[0018] On the basis of the above scheme, further improvements are as follows: the cross section of the limiting portion is semicircular.

[0019] On the basis of the above scheme, further improvements are as follows: the cross section of the stop portion is semicircular.

[0020] On the basis of the above scheme, further improvements are as follows: the stop bar is integrally machined with the outer wheel body.

[0021] On the basis of the above scheme, further improvements are as follows: the loss factor tan delta of the damping alloy used by the outer wheel body and the tooth body is greater than or equal to 0.01. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a partial structure schematic view of a specific embodiment of the double-layer superimposed gear vibration reduction structure of the application;

[0023] Figure 2 It is a partial structure schematic view of a specific embodiment of the double-layer superimposed gear vibration reduction structure of the application; Figure 1 It is a partial enlarged view of A in FIG. 1;

[0024] Figure 3 It is a partial enlarged view of B in FIG. 1; Figure 1 It is a partial enlarged view of B in FIG. 1;

[0025] Figure 4 It is a sectional view of a single tooth body;

[0026] Figure 5 It is a front view of a single tooth body;

[0027] Figure 6 Figure 2 is a side view of a single tooth shell towards the inner side of the tooth shell;

[0028] Figure 1 is a schematic view of the wheel body, 11 is the inner wheel body, 12 is the outer wheel body, 13 is the first T-shaped sliding groove, 14 is the first T-shaped sliding platform, 2 is the gear tooth, 21 is the tooth body, 211 is the tooth top surface, 212 is the tooth side surface, 213 is the tooth root surface, 214 is the limiting convex strip, 2141 is the limiting part, 215 is the second T-shaped sliding groove, 216 is the blocking strip, 2161 is the blocking part, 22 is the tooth shell, 221 is the upper edge, 2211 is the disassembly screw hole, 222 is the lower edge, 223 is the second T-shaped sliding platform. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application, that is, the described examples are only a part of the examples of the present application, but not all the examples. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of the present application.

[0031] It should be noted that the relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent in such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0032] The features and properties of the present application are further described in detail below in combination with the examples.

[0033] A specific embodiment of a double-layered superimposed gear vibration reduction structure of the present application: as shown in Figures 1-6As shown, the double-layered gear damping structure comprises a gear, which comprises a wheel body 1 and a gear tooth 2. The wheel body 1 comprises an inner wheel body 11 and an outer wheel body 12 which are sleeved with each other. The inner wheel body 11 and the outer wheel body 12 are slidably connected through a first T-shaped sliding table 14 and a first T-shaped sliding groove 13 which extend axially along the wheel body 1. The material of the inner wheel body 11 is alloy carburizing steel, and the material of the outer wheel body 12 is damping alloy. The gear tooth 2 comprises a gear body 21 and a gear shell 22 which is sleeved on the outer surface of the gear body 21. The gear body 21 and the gear shell 22 have the same axial length along the wheel body 1. The gear body 21 is integrally machined with the outer wheel body 12. The material of the gear shell 22 is alloy carburizing steel. A limiting convex strip 214 is arranged in the middle of a tooth top surface 211. The limiting convex strip 214 extends axially along the wheel body 1. The limiting convex strip 214 has two left and right symmetrical limiting portions 2141 which are outward convex. Two gear shells 22 are symmetrically arranged on each gear body 21 with respect to the limiting convex strip 214. The limiting portions 2141 are limitingly matched with the upper edges 221 of the corresponding gear shells 22 respectively. The gear body 21 comprises the tooth top surface 211 and left and right symmetrical tooth side surfaces 212. A plurality of second T-shaped sliding grooves 215 are arranged on the tooth side surfaces 212 axially along the wheel body 1. The second T-shaped sliding grooves 215 extend along the width direction of the tooth side surfaces 212. One end of the second T-shaped sliding grooves 215 penetrates the tooth top surface 211. The inner surface of the gear shell 22 is provided with corresponding second T-shaped sliding tables 223 which are adaptively arranged in one-to-one correspondence with the second T-shaped sliding grooves 215. The second T-shaped sliding tables 223 are slidably assembled in the second T-shaped sliding grooves 215.

[0034] A tooth root surface 213 is formed between any adjacent gear teeth 2. The edges of the two gear shells 22 on the tooth root surface 213 are respectively provided with a blocking strip 216. The blocking strip 216 is provided with an outward convex blocking portion 2161 which is stopingly matched with the lower edge 222 of the corresponding gear shell 22. The blocking strip 216 is arranged to limit the lower edge of the gear shell 22, further improve the fixing strength of the gear shell 22, and avoid the gear shell 22 from being separated from the gear body 21. The two blocking strips 216 on each tooth root surface 213 are integrally machined. The edge of the gear shell 22 corresponding to the limiting convex strip 214 is provided with a dismounting threaded hole 2211. The gear shell 22 can be knocked out of the limiting portion 2141 by screwing a bolt into the dismounting threaded hole 2211. The arrangement of the dismounting threaded hole 2211 can greatly facilitate the dismounting of the gear shell 22. The materials of the outer wheel body 12 and the gear body 21 are manganese copper-based alloy. The cross section of the limiting portion 2141 is semicircular. The cross section of the blocking portion 2161 is semicircular. The blocking strip 216 is integrally machined with the outer wheel body 12. The damping alloy used by the outer wheel body 12 and the gear body 21 has a loss factor tanδ≥0.01.

[0035] In use, when the gear housing 22 needs to be replaced, first, a special tool is used to provide a lifting force to the edge of the gear housing 22 to make the edge of the gear housing 22 disengage from the limiting portion 2141, and then the gear housing 22 is slid along the length direction of the first T-shaped sliding groove 13 to the tooth top surface 211 direction, so that the worn gear housing 22 is removed from the gear body 21, and the new gear housing 22 is slid into the second T-shaped sliding groove 215 through the second T-shaped sliding table 223, before sliding into place, a special tool is used to knock the edge of the gear housing 22, so that it is located below the limiting portion 2141 of the limiting protrusion 214, realizing the locking of the gear housing 22. In the working process, the gear housing 22 directly contacts with the matched gear, and the force provided by the matched gear to the gear housing 22 is mainly the force in the direction of pressing the gear body 21, and only a small component force acts on the gear housing 22 in the direction of disengaging from the gear body 21 before disengaging, at this time, a part is borne by the cooperation of the second T-shaped sliding groove 215 and the second T-shaped sliding table 223, and a small part is borne by the cooperation of the limiting portion 2141 and the edge of the gear housing 22, preventing the gear housing 22 from disengaging from the gear body 21. It can be seen that, compared with the prior art, the damaged gear housing 22 can be replaced independently without the need to replace all the gear housings 22, and since each tooth 2 has two sides of the matching surface independently provided with the gear housing 22, when the gear tooth surface is worn, only the corresponding gear housing 22 at the worn position needs to be replaced, without the need to replace the entire gear, thereby reducing material waste, reducing cost, and reducing the workload of replacement and maintenance; convenient and fast disassembly and assembly, low cost, since the connection between the gear housing 22 and the gear body 21 is mainly realized through the cooperation of the second T-shaped sliding groove 215 and the second T-shaped sliding table 223 and the cooperation of the limiting protrusion 214 and the edge of the gear housing 22, only the gear housing 22 needs to be cooperated or disengaged with the limiting protrusion 214 during the disassembly and assembly process, so that the second T-shaped sliding table 223 of the gear housing 22 can be smoothly slid into or out of the second T-shaped sliding groove 215 of the gear body 21, and the operation is very simple, convenient and fast; without the need to replace the entire gear, only the damaged gear housing 22 needs to be replaced, saving materials, transportation, lifting, purchase and other costs; the axle and the gear housing 22 are made of rigid material, the outer wheel body 12 and the gear body 21 are made of damping material, the outer wheel body 12 and the gear body 21 act as intermediate links to dissipate vibration energy and reduce the amount of vibration transmitted to the rotating shaft, and the tooth surface can withstand direct contact wear; the cooperation of the second T-shaped sliding groove 215 and the second T-shaped sliding table 223 provides the gear housing 22 with radial and circumferential multidirectional bearing capacity to prevent the gear housing 22 from disengaging due to the component force in the gear transmission process; the limiting protrusion 214 covers the entire width of the tooth 2, can have the maximum limiting contact area, and can improve the limiting capacity as much as possible to prevent the gear housing 22 from falling off; two half-tooth-shaped gear housings 22 are arranged on each tooth 2, which can prevent over-positioning, improve positioning accuracy, and make the gear housing 22 and the gear body 21 surface precisely fit.

[0036] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and the patent protection scope of the present application is subject to the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A double-layer laminated gear damping structure comprising a gear including a gear body and gear teeth, characterized by, The wheel body comprises an inner wheel body and an outer wheel body which are sleeved with each other, and the inner and outer wheel bodies are slidably connected through a first T-shaped sliding table and a first T-shaped sliding groove which extend along the axial direction of the wheel body; the material of the inner wheel body is alloy carburizing steel, and the material of the outer wheel body is damping alloy; the gear tooth comprises a gear body and a gear shell which is sleeved on the outer surface of the gear body; the length of the gear body and the gear shell along the axial direction of the wheel body is the same; the gear body is integrally machined with the outer wheel body; the material of the gear shell is alloy carburizing steel; a limiting protruding strip is arranged in the middle of the top surface of the gear tooth and extends along the axial direction of the wheel body; the limiting protruding strip has two limiting portions which are symmetrical to each other and protrude outward; two gear shells are symmetrically arranged on each gear body with respect to the limiting protruding strip; the limiting portions are respectively limitedly matched with the edges of the corresponding gear shells; the gear body comprises a top surface and left and right symmetrical side surfaces; a plurality of second T-shaped sliding grooves are arranged on the side surfaces along the axial direction of the wheel body; the second T-shaped sliding grooves extend along the width direction of the side surfaces; one end of the second T-shaped sliding groove penetrates the top surface; and the inner surface of the gear shell is provided with a corresponding second T-shaped sliding table.

2. The double-deck laminated gear vibration damping structure according to claim 1, characterized by The tooth root surface is formed between any adjacent gear teeth; the edges of the two gear shells on the two sides of the tooth root surface are respectively provided with a blocking strip; the blocking strip is provided with a protruding blocking portion; and the blocking portion is stop matched with the edge of the corresponding gear shell.

3. The double-deck laminated gear damper structure according to claim 1, characterized by The two blocking strips on each tooth root surface are integrally machined.

4. The double-deck laminated gear damper structure according to claim 1, characterized by The edge of the gear shell corresponding to the limiting protruding strip is provided with a dismounting threaded hole; the gear shell can be lifted out of the limiting portion by rotating a bolt in the dismounting threaded hole.

5. The double-deck laminated gear damper structure according to claim 1, wherein The materials of the outer wheel body and the gear body are manganese copper-based alloy.

6. The double-deck laminated gear damper structure according to claim 1, wherein The cross section of the limiting portion is semicircular.

7. The dual-layered laminated gear damper structure according to claim 2, wherein The cross section of the blocking portion is semicircular.

8. The dual-layered laminated gear damper structure according to claim 2, wherein The blocking strip is integrally machined with the outer wheel body.

9. The dual-layered laminated gear damper structure according to claim 1, wherein The loss factor tanδ of the damping alloy used by the outer wheel body and the gear body is greater than or equal to 0.01.

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