Gear assembly

Abstract

The utility model discloses a gear assembly, which relates to the technical field of gears and comprises a gear body and a rotating shaft fixed with the gear body, oil storage bins communicated with each other are arranged in the gear body and the rotating shaft, through grooves communicated with the outside and the oil storage bins are arranged in tooth grooves of the gear body, piston blocks are arranged in the through grooves, and piston grooves are arranged in the middles of the through grooves. The piston block is arranged in the piston groove in a sliding mode, a pressing rod is fixedly arranged on the side, close to the outside, of the piston block, the end, away from the piston block, of the pressing rod protrudes out of the bottom of the tooth groove of the gear body, an oil passing groove is formed in the outer side of the through groove, one end of the oil passing groove is communicated with the through groove, and the other end of the oil passing groove is communicated with the oil storage bin. When the gear teeth of one gear body are meshed with each other, the gear teeth of the other gear body enter the tooth groove of the other gear body, the pressing rod in the tooth groove is pressed into the through groove, the piston block fixed to the pressing rod in the through groove synchronously slides at the moment, oil in the oil storage bin is squeezed, the oil flows into the tooth groove through the through groove, and the gear teeth of the gear bodies are lubricated.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear technology field, concretely is a gear assembly. BACKGROUND

[0002] Gear is the mechanical element that has the tooth on wheel rim can continuously mesh transmission motion and power.

[0003] The application with patent publication No. CN213360993U discloses a gear assembly, which comprises a fixing piece, a main gear and an anti-backlash gear, the fixing piece is installed in the inner ring of the main gear, a buffer assembly is arranged between the fixing piece and the main gear, the first side of the main gear is connected with the first side of the anti-backlash gear, the rotating shaft of the anti-backlash gear coincides with the rotating shaft of the main gear, an elastic piece is connected between the main gear and the anti-backlash gear, the main gear has a plurality of first teeth, the anti-backlash gear has a plurality of second teeth, the number of teeth of the first teeth is same as the number of teeth of the second teeth, the modulus of the first teeth is same as the modulus of the second teeth, at least part of the second teeth is staggered with the corresponding first teeth, the anti-backlash gear can rotate relative to the main gear, so that the staggered distance of the second teeth and the corresponding first teeth changes.

[0004] The above-mentioned device is easy to rust and increase friction after being used for a period of time, and it is not convenient for flexible rotation of the gear assembly, therefore, the utility model provides a gear assembly. UTILITY MODEL CONTENTS

[0005] The utility model discloses to the deficiency in prior art, provide a kind of gear assembly, by setting up oil storage in gear body, simultaneously set up the through groove that is connected with outside and oil storage in the tooth slot of gear body, simultaneously set up the piston block with pressure rod in through groove, when gear body rotates, the gear tooth of mutually meshed gear body enters the tooth slot of another gear body, the pressure rod in this tooth slot is pressed into through groove, at this time, piston block fixed with pressure rod in through groove slides synchronously, extrude the oil in oil storage, let oil flow out to tooth slot by through groove, lubricate the gear tooth of gear body.

[0006] In order to solve the above technical problems, the utility model solves the phenomenon that the gear is easy to rust after long time use by the following technical scheme.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a gear assembly, including gear body and fixed rotation axis with gear body, gear body and rotation axis are equipped with the oil storage bin of intercommunication, the gear body is equipped with the through groove of intercommunication with oil storage bin in the tooth slot, is equipped with piston block in through groove, is equipped with piston groove in the middle of through groove, piston block is arranged in piston groove and slides, fixedly is equipped with pressure rod on the side of piston block close to the outside, the end of pressure rod far from piston block protrudes from the bottom of tooth slot of gear body, is equipped with oil groove outside through groove, one end of oil groove is connected with through groove, and the other end is connected with oil storage bin.

[0009] Preferably, the inside of the piston groove is provided with a tapered surface close to the outside, the tapered surface cooperates with the side of the piston block close to the outside, and the connection between the oil groove and the through groove is located on the tapered surface. The tapered surface can improve the sealing performance of the piston block on the through groove.

[0010] Preferably, the pressure rod is slidably embedded in the through groove, and the outer side of the pressure rod is provided with uniformly distributed oil outlets, which can ensure that the pressure rod does not deviate when moving in the through groove, and at the same time, the normal oil outlet is not affected.

[0011] Preferably, the side of the piston block close to the oil storage bin is fixedly provided with a compression spring, and the end of the compression spring far from the piston block is fixedly connected with the inside of the piston groove. The piston block in the tooth slot not in contact with the meshing gear is sealed on the inside of the through groove by the pressure of the compression spring.

[0012] Preferably, the outer side of the rotation axis is provided with an oil injection hole connected with the oil storage bin, and the oil injection hole is provided with a sealing plug, which is convenient for oiling.

[0013] Preferably, the sealing plug and the oil injection hole are connected by threads, which improves the connection strength of the sealing plug and the oil injection hole.

[0014] Preferably, the parts of the sealing plug and the oil injection hole in contact with the outside are both provided with annular grooves, and annular sealing gaskets are embedded in the annular grooves, which improves the sealing effect of the oil injection hole.

[0015] Preferably, the annular sealing gasket is made of polytetrafluoroethylene. The tetrafluoro sealing gasket has excellent corrosion resistance, high temperature resistance and wear resistance, and can work stably for a long time in harsh environments such as high temperature, high pressure and strong corrosion. In addition, it also has good sealing performance and can effectively prevent lubricating oil from leaking.

[0016] Preferably, the side of the rotation axis far from the gear body is fixedly provided with a fixed column, and the side of the fixed column far from the rotation axis is provided with a plug groove matched with an external transmission shaft, which is convenient for configuring the gear assembly on the external transmission shaft.

[0017] Preferably, two oil grooves connected with the through groove are provided on the outer side of each through groove and are symmetrically arranged on the outer side of the through groove, which improves the oil outlet speed.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses a gear body is set up the oil storage bin in, simultaneously sets up the through groove who communicates outside and the oil storage bin in the gear body's gear slot, simultaneously sets up the piston block with the pressure rod in the through groove, when the gear body rotates, the gear tooth of mutual meshing gear body enters the gear slot of another gear body, and the pressure rod in this gear slot is pressed into the through groove, the piston block fixed with the pressure rod in the through groove synchronously slides at this moment, and the oil in the oil storage bin is extruded, lets the oil flow to the gear slot through the through groove, lubricates the gear tooth of gear body, thereby guaranteeing that the gear assembly has lubricating oil outside gear body in the use process, guarantees that the rust problem of the gear body appears far away when long -time use.

[0020] Through setting up the compression spring in the piston groove, the piston block in the gear slot of mutual meshing gear does not contact the inside of the through groove to the pressure of the compression spring and seal, avoids the oil in the oil storage bin accidentally leaking. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be needed to use the drawing in the embodiment briefly introduced, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0022] Figure 1 It is the overall structure schematic diagram of the utility model;

[0023] Figure 2 It is the oil storage bin structure schematic diagram of the utility model;

[0024] Figure 3 It is the gear body internal structure partial section view schematic diagram of the utility model;

[0025] Figure 4 It is the gear body section view schematic diagram of the utility model;

[0026] Figure 5 It is the through groove part structure section view schematic diagram of the utility model;

[0027] Figure 6 It is the through groove part structure section view schematic diagram of the utility model when the pressure rod is pressed into the through groove;

[0028] Figure 7 It is the oil hole part structure schematic diagram of the utility model.

[0029] Figure number explanation: 1, gear body; 2, rotating shaft; 3, oil storage bin; 4, through groove; 5, piston block; 6, piston groove; 7, pressing rod; 8, oil running groove; 9, conical surface; 10, oil outlet groove; 11, compression spring; 12, oil injection hole; 13, sealing plug; 14, annular groove; 15, annular sealing gasket; 16, fixed column; 17, insertion slot. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings.

[0031] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be used in other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.

[0032] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or position indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the simplified description of the utility model for the convenience of description, and does not indicate or imply that the indicated device or gear element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above-mentioned terms cannot be understood as a limitation of the utility model.

[0033] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number. EMBODIMENT

[0034] Please refer to Figures 1-7The utility model provides a gear assembly, including gear body 1 and with gear body 1 fixed rotating shaft 2, gear body 1 and rotating shaft 2 are equipped with the oil storage 3 of intercommunication in it, rotating shaft 2 is away from the side of gear body 1 and is equipped with fixed column 16, fixed column 16 is away from the side of rotating shaft 2 and is equipped with the slot 17 of cooperation with outside transmission shaft, gear assembly is conveniently configured to outside transmission shaft, the tooth groove of gear body 1 all is equipped with the through groove 4 of intercommunication outside with oil storage 3, the through groove 4 is equipped with piston block 5, piston block 5 adopts aluminium alloy piston, after aluminium alloy piston is specially treated and surface coating, can further improve its wear resistance and corrosion resistance, adapts high temperature high pressure working environment, the middle part of through groove 4 is equipped with piston groove 6, piston block 5 is slidably arranged in piston groove 6, the side of piston block 5 close to outside is equipped with pressure rod 7, the end of pressure rod 7 away from piston block 5 protrudes from the tooth groove bottom of gear body 1, the outside of through groove 4 is equipped with oil run groove 8, one end of oil run groove 8 is connected with through groove 4, and the other end is connected with oil storage 3.

[0035] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings:

[0036] Please refer to Figures 1-7 , utilize the pressure of the intermeshing gear teeth to press the pressure rod 7 into the through groove 4, at this time the piston block 5 fixed with the pressure rod 7 in the through groove 4 slides synchronously, the piston block 5 extrudes the oil in the oil storage 3, so that the oil flows out of the through groove 4 into the tooth groove, lubricating the gear teeth of the gear body 1, thereby ensuring that there is always lubricating oil outside the gear body 1 during use of the gear assembly, ensuring that there is no rusting problem far away from the gear body 1 during long-term use.

[0037] As shown in Figure 6 , the inside of the piston groove 6 close to the outside is provided with a tapered surface 9, which cooperates with the side of the piston block 5 close to the outside. The tapered surface 9 can improve the sealing performance of the piston block 5 to the through groove 4. The connection between the oil run groove 8 and the through groove 4 is located on the tapered surface 9.

[0038] In addition, as shown in Figure 5 and Figure 6 , the side of the piston block 5 close to the oil storage 3 is fixedly provided with a compression spring 11 made of alloy spring steel, which has a high elastic limit and fatigue strength and can withstand repeated compression and recovery without failure. The compression spring 11 can further improve its hardness and durability through heat treatment process to adapt to the possible high temperature and high pressure conditions in the lubricating oil environment. The end of the compression spring 11 away from the piston block 5 is fixedly connected with the inside of the piston groove 6. The piston block 5 in the tooth groove where the intermeshing gears do not contact is sealed to the inside of the through groove 4 by the pressure of the compression spring 11.

[0039] To ensure that there is always lubricating oil in the tooth groove at the meshing position of the gear body 1 during meshing rotation, the embodiments of the present application are described as follows:

[0040] Firstly, when the gear body 1 is engaged to rotate, the teeth of the adjacent gear are engaged into the tooth groove of the gear body 1, and the teeth at the engagement position press the press rod 7 protruding from the through groove 4 in the tooth groove, so as to press the press rod 7 into the through groove 4;

[0041] In this process, the press rod 7 pushes the piston block 5 to move in the piston groove 6 towards the oil storage compartment 3, and extrudes the lubricating oil in the piston groove 6 and the oil storage compartment 3 which are communicated with each other;

[0042] Then, the extruded lubricating oil in the oil storage compartment 3 enters the oil running groove 8 outside the through groove 4;

[0043] Finally, the lubricating oil is pressed to enter the through groove 4 through the oil running groove 8, and flows out from the gap between the through groove 4 and the press rod 7, so as to lubricate the engagement position of the gear body 1, thereby ensuring that there is always lubricating oil outside the gear body 1 during use of the gear assembly, and further ensuring that the gear body 1 will not rust after long-term use.

[0044] It is worth noting that, since the piston block 5 cooperates with the piston groove 6 through the conical surface 9, and the communication between the oil running groove 8 and the through groove 4 is located on the conical surface 9, the oil in the oil storage compartment 3 will not flow out through the oil running groove 8 when the piston block 5 is sealed to the through groove 4 by the action of the compression spring 11.

[0045] As shown in Figure 4 In some embodiments, in order to improve the speed of the lubricating oil overflowing when being pressed, two oil running grooves 8 which communicate with the through groove 4 are arranged symmetrically outside each through groove 4, so that double-line oil outlet is realized by single pressing, and the lubricating oil can quickly enter the engagement position of the gear body 1.

[0046] As shown in Figure 5 and Figure 6 In some embodiments, in order to ensure the stability of the press rod 7 when running in the through groove 4, the press rod 7 is arranged in a shape embedded in the through groove 4, so as to ensure that the press rod 7 will not deviate when moving in the through groove 4, and the oil outlet grooves 10 are uniformly arranged outside the press rod 7, so as to ensure that the embedding of the press rod 7 in the through groove 4 will not affect the normal oil outlet.

[0047] As shown in Figure 7 In some embodiments, in order to facilitate the addition of lubricating oil to the oil injection hole 12 after a period of use, the oil injection hole 12 which communicates with the oil storage compartment 3 is arranged outside the rotating shaft 2, and the oil injection hole 12 is provided with a sealing plug 13, so that the oil storage compartment 3 can be filled with oil through the oil injection hole 12 by opening the sealing plug 13;

[0048] On this basis, in order to improve the connection strength of the sealing plug 13 and the oil injection hole 12, the sealing plug 13 and the inside of the oil injection hole 12 are connected through threads, at the same time, in order to further improve the sealing effect at the oil injection hole 12, annular grooves 14 are arranged at the positions where the sealing plug 13 and the outside of the oil injection hole 12 contact, and annular sealing pads 15 made of polytetrafluoroethylene are embedded in the annular grooves 14, the four-fluorine sealing pad has excellent corrosion resistance, high temperature resistance and wear resistance, so that the gear assembly can work stably for a long time in harsh environments such as high temperature, high pressure and strong corrosion, in addition, the four-fluorine sealing pad also has good sealing performance, which can effectively prevent the leakage of lubricating oil.

[0049] It will be understood by those skilled in the art that the embodiments of the present application shown in the above description and the accompanying drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively achieved. The function and structural principle of the present application have been shown and explained in the embodiments, and the embodiments of the present application can be any deformation or modification without departing from the principle.

Claims

1. A gear assembly, characterized by, The utility model relates to a gear oil storage device, including: Gear body (1) and with gear body (1) fixed rotating shaft (2), gear body (1) and rotating shaft (2) inside are equipped with the oil storage (3) of intercommunication, the gear body (1) of tooth slot is equipped with the through groove (4) of intercommunication outside with the oil storage (3) all, Piston block (5) is equipped in the through groove (4), the middle part of through groove (4) is equipped with piston groove (6), piston block (5) is slidably arranged in piston groove (6), the side of piston block (5) close to outside is fixedly provided with pressure rod (7), the end of pressure rod (7) away from piston block (5) protrudes from the bottom of the tooth slot of gear body (1), Oil channel (8) is arranged on the outside of through groove (4), one end of oil channel (8) is connected with through groove (4), and the other end is connected with oil storage (3).

2. A gear assembly according to claim 1, wherein: The side of the inside of piston groove (6) close to outside is provided with a tapered surface (9), the tapered surface (9) is matched with the side of piston block (5) close to outside, and the communication part of oil channel (8) and through groove (4) is located on the tapered surface (9).

3. A gear assembly according to claim 2, wherein: The pressure rod (7) is slidably embedded in the inside of the through groove (4), and the outside of the pressure rod (7) is provided with uniformly distributed oil outlet grooves (10).

4. A gear assembly according to claim 2, wherein: The side of piston block (5) close to oil storage (3) is fixedly provided with compression spring (11), and the end of compression spring (11) away from piston block (5) is fixed in the inside of piston groove (6).

5. A gear assembly according to claim 4, wherein: The outside of rotating shaft (2) is provided with an oil injection hole (12) connected with the oil storage (3), and the oil injection hole (12) is provided with a sealing plug (13).

6. A gear assembly according to claim 5, wherein: The sealing plug (13) is connected with the inside of the oil injection hole (12) through threads.

7. A gear assembly according to claim 5, wherein: The part of the sealing plug (13) and the outside of the oil injection hole (12) is in contact with each other is provided with an annular groove (14), and the annular groove (14) is embedded with an annular sealing gasket (15).

8. A gear assembly according to claim 7, wherein: The annular sealing gasket (15) is made of polytetrafluoroethylene.

9. A gear assembly as claimed in claim 1, wherein: The side of rotating shaft (2) away from gear body (1) is fixedly provided with a fixed column (16), and the side of fixed column (16) away from rotating shaft (2) is provided with a plug groove (17) matched with an external transmission shaft.

10. A gear assembly as claimed in claim 2, wherein: The oil channel (8) connected with the through groove (4) is provided on the outside of each through groove (4), and two oil channels (8) are symmetrically arranged on the outside of the through groove (4).

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