Low-vibration low-noise worm and gear reduction gearbox

Abstract

The utility model discloses a low-vibration low-noise worm and gear reduction gearbox which comprises a machine shell, a transmission worm is rotationally installed on the inner top of the machine shell, a transmission worm gear meshed with the transmission worm is rotationally installed in the machine shell and located below the transmission worm, and part of the transmission worm gear is located in lubricating oil. An oil storage tank is fixedly installed on the inner wall of the machine shell and located above the transmission worm, an oil leakage hole is formed in the bottom of the oil storage tank and located over the transmission worm gear, and a conveying mechanism used for conveying lubricating oil into the oil storage tank is arranged in the machine shell. When the reduction gearbox works, lubricating oil located at the bottom of the reduction gearbox is conveyed upwards into the oil storage tank through the conveying mechanism, the lubricating oil in the oil storage tank drips oil to the surface of the transmission worm through the oil leakage hole under the action of gravity, and therefore in the rotating process of the transmission worm, the lubricating oil flows to the position between the transmission worm gear and the transmission worm; and the conveying efficiency of conveying the lubricating oil between the transmission worm gear and the transmission worm is improved.

Description

Technical Field

[0001] The utility model relates to a reduction box, in particular to a low-vibration and low-noise worm gear reduction box. Background Art

[0002] A reducer is an independent component consisting of a gear transmission or a worm-worm transmission enclosed in a rigid housing, and is often used as a reduction transmission device between the prime mover and the working machine.

[0003] The worm-worm gear reduction box can change the direction of power transmission, and in order to lubricate the transmission parts in the reduction box, it is usually necessary to inject lubricating oil into the casing.

[0004] However, in actual use, the lubricating oil injected into the casing is easily deposited at the bottom of the casing due to gravity. Only part of the lubricating oil is transported upward by the rotation of the worm gear, and the delivery amount is small. As a result, the oil film thickness on the surface of the transmission parts is thin and cannot be fully lubricated, which can easily cause excessive meshing noise or meshing vibration. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a low-vibration and low-noise worm gear reduction box to increase the content of lubricating oil between the transmission worm wheel and the transmission worm.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-vibration and low-noise worm gear reduction box, comprising a casing, a transmission worm is rotatably installed on the inner top of the casing, the transmission worm is horizontally arranged, a transmission worm wheel meshing with the transmission worm is rotatably installed inside the casing and located below the transmission worm, a part of the transmission worm wheel is located in lubricating oil, an oil storage tank is fixedly installed on the inner wall of the casing and located above the transmission worm, an oil leakage hole is opened at the bottom of the oil storage tank and located directly above the transmission worm wheel, and a conveying mechanism for conveying lubricating oil to the oil storage tank is arranged inside the casing.

[0007] Furthermore, the conveying mechanism includes an oil suction pipe fixedly installed on the inner wall of the casing, the lower side of the oil suction pipe is located in the lubricating oil, the upper side of the oil suction pipe is provided with an oil suction unit, the upper side of the oil suction unit is provided with an oil delivery pipe connected to the oil storage tank, and the oil delivery pipe is fixedly connected to the oil storage tank.

[0008] Furthermore, the oil suction unit includes a pipe fitting partially slidably arranged in the oil suction pipe and the oil delivery pipe, a first one-way oil inlet valve is fixedly installed in the pipe fitting, a second one-way oil inlet valve is fixedly installed in the oil suction pipe, and a driving member is installed on the transmission worm gear to drive the pipe fitting to move axially along the oil suction pipe.

[0009] Furthermore, the driving member includes a connecting block fixedly mounted on the side surface of the pipe fitting, the connecting block is parallel to the two opposite surfaces of the transmission worm gear, a side of the connecting block close to the transmission worm gear is provided with a circular groove, a push block is horizontally slidably arranged in the circular groove, the push block is fixedly connected to the side surface of the transmission worm gear shaft, and the push block is not located in the middle of the side surface of the transmission worm gear shaft.

[0010] Furthermore, a flange is fixedly connected to the front end of the casing.

[0011] Furthermore, a second connecting shaft is fixedly installed at the center of the shaft side surface of the transmission worm wheel, and the second connecting shaft is not partially located in the casing.

[0012] Furthermore, a guide groove is provided on a side of the transmission worm gear away from the second connecting shaft, and a plurality of support rods are slidably arranged in the guide groove, and the support rods are fixedly connected to the inner wall of the casing.

[0013] Compared with the prior art, the utility model has the following beneficial effects: when the reduction gearbox is working, the lubricating oil at the bottom of the reduction gearbox is conveyed upward to the oil storage tank through the conveying mechanism, and the lubricating oil in the oil storage tank drips onto the surface of the transmission worm through the oil leakage hole under the action of gravity, so that during the rotation of the transmission worm, the lubricating oil flows between the transmission worm wheel and the transmission worm, and at the same time, under the action of gravity, the lubricating oil is also conveyed between the transmission worm wheel and the transmission worm, thereby increasing the amount of lubricating oil between the transmission worm wheel and the transmission worm, and improving the conveying efficiency of the lubricating oil between the transmission worm wheel and the transmission worm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the transmission worm and the transmission worm wheel of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the driving member of the utility model;

[0017] Figure 4 This is a schematic diagram of the pipe structure of the utility model.

[0018] In the figure: 1. casing; 2. flange; 3. transmission worm; 4. transmission worm wheel; 5. first connecting shaft; 6. second connecting shaft; 7. oil storage tank; 8. oil leakage hole; 9. conveying mechanism; 91. oil suction pipe; 92. oil suction unit; 93. oil delivery pipe; 94. pipe fitting; 95. first one-way oil inlet valve; 96. second one-way oil inlet valve; 97. driving member; 98. connecting block; 99. return groove; 910. push block; 10. guide groove; 11. support rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 The present embodiment provides a low-vibration and low-noise worm gear reduction box, including a casing 1, a flange 2 is fixedly connected to the front end of the casing 1, and the reduction box can be connected and fixed to the motor through the flange 2. A transmission worm 3 is rotatably installed on the inner top of the casing 1, and the transmission worm 3 is arranged horizontally. A first connecting shaft 5 is fixedly installed on one side of the transmission worm 3, and the first connecting shaft 5 is fixedly connected to the output shaft of the motor. A transmission worm wheel 4 meshing with the transmission worm 3 is rotatably installed inside the casing 1 below the transmission worm 3, and a second connecting shaft 6 is fixedly installed at the center of the shaft side of the transmission worm wheel 4, and a part of the second connecting shaft 6 is located inside the casing 1.

[0021] In actual work, the motor rotates, driving the first connecting shaft 5 to rotate through the output shaft, and then driving the transmission worm 3 to rotate, and the transmission worm 3 drives the transmission worm wheel 4 located below to rotate. When the transmission worm 3 rotates one circle, the transmission worm wheel 4 does not rotate one circle, and thus the second connecting shaft 6 on the transmission worm wheel 4 does not rotate one circle, so that the rotation of the motor is transmitted to the workbench through the reduction box, and the speed of the motor is reduced, thereby achieving the effect of reducing the speed of the motor.

[0022] Lubricating oil is injected into the housing 1, and part of the transmission worm wheel 4 is located in the lubricating oil. Therefore, during the rotation of the transmission worm wheel 4, the lubricating oil at the bottom of the housing 1 will be gradually driven to the upper side to contact the transmission worm 3, thereby lubricating the gap between the rotating worm and the transmission worm wheel 4.

[0023] However, during the rotation of the transmission worm gear 4, the lubricating oil carried is less and the lubricating oil only adheres to the surface of the transmission worm gear 4. As the transmission worm gear 4 rotates, the lubricating oil moves upward and flows downward under the action of gravity, so that even less lubricating oil is delivered to the space between the transmission worm gear 4 and the transmission worm 3. Therefore, during the rotation process, it is easy for the gap between the transmission worm gear 4 and the transmission worm 3 to be unable to be filled due to lack of lubricating oil, resulting in excessive meshing noise or meshing vibration.

[0024] See also Figure 1 and Figure 2In order to solve the above technical problems, an oil storage tank 7 is fixedly installed on the inner wall of the casing 1 and located above the transmission worm 3, an oil leakage hole 8 is opened at the bottom of the oil storage tank 7 and located just above the transmission worm wheel 4, and a conveying mechanism 9 for conveying lubricating oil to the oil storage tank 7 is arranged inside the casing 1.

[0025] When the reduction gearbox is working, the lubricating oil at the bottom of the casing 1 is transported upward to the oil storage tank 7 through the conveying mechanism 9. The lubricating oil in the oil storage tank 7 drips onto the surface of the transmission worm 3 through the oil leakage hole 8 under the action of gravity. Therefore, during the rotation of the transmission worm 3, the lubricating oil flows between the transmission worm wheel 4 and the transmission worm 3. At the same time, under the action of gravity, the lubricating oil also flows between the transmission worm wheel 4 and the transmission worm 3, thereby increasing the amount of lubricating oil between the transmission worm wheel 4 and the transmission worm 3, and also improving the transmission efficiency of the lubricating oil between the transmission worm wheel 4 and the transmission worm 3. At the same time, under the action of gravity, the excess lubricating oil flows to the lower side of the casing 1 again, forming a cycle.

[0026] See also Figure 2 and Figure 4 The conveying mechanism 9 includes an oil suction pipe 91 fixedly mounted on the inner wall of the casing 1, the lower side of the oil suction pipe 91 is located in the lubricating oil, an oil suction unit 92 is arranged on the upper side of the oil suction pipe 91, and an oil delivery pipe 93 connected to the oil storage tank 7 is arranged on the upper side of the oil suction unit 92, and the oil delivery pipe 93 is fixedly connected to the oil storage tank 7.

[0027] The lubricating oil enters the oil suction pipe 91 through the oil suction unit 92 , and the lubricating oil in the oil suction pipe 91 is transported to the oil delivery pipe 93 through the oil suction unit 92 , and enters the oil storage tank 7 through the oil delivery pipe 93 , thereby completing the upward transportation of the lubricating oil.

[0028] See also Figure 2 and Figure 4 The oil suction unit 92 includes a pipe fitting 94 partially slidably arranged in the oil suction pipe 91 and the oil delivery pipe 93, a first one-way oil inlet valve 95 is fixedly installed in the pipe fitting 94, a second one-way oil inlet valve 96 is fixedly installed in the oil suction pipe 91, and a driving member 97 is installed on the transmission worm gear 4 to drive the pipe fitting 94 to move axially along the oil suction pipe 91.

[0029] The pipe fitting 94 is driven to move up and down by the driving member 97. When the pipe fitting 94 moves upward, the first one-way oil inlet valve 95 is in a closed state, so that the oil suction pipe 91 is in a negative pressure state, causing the second one-way valve to open, so that the oil suction pipe 91 starts to absorb lubricating oil. When the pipe fitting 94 moves downward, the pressure in the oil suction pipe 91 increases. At this time, the first valve opens, and the lubricating oil in the oil suction pipe 91 enters the pipe fitting 94, pushing the lubricating oil in the pipe fitting 94 into the oil storage tank 7 through the oil delivery pipe 93. When the pipe fitting 94 moves upward again, the oil suction pipe 91 absorbs oil again, thereby repeating the cycle and continuously delivering the lubricating oil to the oil storage tank 7.

[0030] See also Figure 2 , Figure 3 and Figure 4 The driving member 97 includes a connecting block 98 fixedly mounted on the side surface of the pipe 94. The connecting block 98 is parallel to the two opposite surfaces of the transmission worm gear 4. A circular groove 99 is provided on the side of the connecting block 98 close to the transmission worm gear 4. A push block 910 is horizontally slidably arranged in the circular groove 99. The push block 910 is fixedly connected to the side surface of the transmission worm gear 4 shaft, and the push block 910 is not located in the middle of the side surface of the transmission worm gear 4 shaft.

[0031] Because the push block 910 is not located in the middle of the side surface of the transmission worm gear 4 shaft, there is a distance between the push block 910 and the axis center of the transmission worm gear 4. Therefore, during the rotation of the transmission worm gear 4, the push block 910 will move up and down in the vertical direction. Because the push block 910 is located in the circular groove 99, the push block 910 will push the connecting block 98 to move up and down, thereby driving the pipe fitting 94 to move up and down.

[0032] See also Figure 2 A guide groove 10 is provided on the side of the transmission worm wheel 4 away from the second connecting shaft 6. A plurality of support rods 11 are slidably arranged in the guide groove 10. The support rods 11 are fixedly connected to the inner wall of the housing 1. The support rods 11 improve the rotation stability of the transmission worm wheel 4.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A low-vibration and low-noise worm gear reduction box, comprising a housing (1), a transmission worm (3) rotatably mounted on the top of the housing (1), the transmission worm (3) being arranged horizontally, a transmission worm wheel (4) meshing with the transmission worm (3) rotatably mounted inside the housing (1) and located below the transmission worm (3), a portion of the transmission worm wheel (4) being located in lubricating oil, and characterized in that: An oil storage tank (7) is fixedly mounted on the inner wall of the casing (1) and located above the transmission worm (3); an oil leakage hole (8) is provided at the bottom of the oil storage tank (7) and located directly above the transmission worm gear (4); and a conveying mechanism (9) for conveying lubricating oil to the oil storage tank (7) is provided inside the casing (1); The conveying mechanism (9) comprises an oil suction pipe (91) fixedly mounted on the inner wall of the casing (1); the lower side of the oil suction pipe (91) is located in the lubricating oil; the upper side of the oil suction pipe (91) is provided with an oil suction unit (92); the upper side of the oil suction unit (92) is provided with an oil delivery pipe (93) connected to the oil storage tank (7); the oil delivery pipe (93) is fixedly connected to the oil storage tank (7).

2. The low-vibration and low-noise worm gear reducer according to claim 1, characterized in that: The oil suction unit (92) comprises a pipe fitting (94) partially slidably arranged in the oil suction pipe (91) and the oil delivery pipe (93); a first one-way oil inlet valve (95) is fixedly installed in the pipe fitting (94); a second one-way oil inlet valve (96) is fixedly installed in the oil suction pipe (91); and a driving member (97) is installed on the transmission worm gear (4) for driving the pipe fitting (94) to move axially along the oil suction pipe (91).

3. The low vibration and low noise worm gear reducer according to claim 2, characterized in that: The driving member (97) comprises a connecting block (98) fixedly mounted on the side surface of the pipe member (94); the connecting block (98) and two opposite surfaces of the transmission worm wheel (4) are parallel; a side of the connecting block (98) close to the transmission worm wheel (4) is provided with a circular groove (99); a push block (910) is horizontally slidably arranged in the circular groove (99); the push block (910) is fixedly connected to the side surface of the shaft of the transmission worm wheel (4); and the push block (910) is not located in the middle of the side surface of the shaft of the transmission worm wheel (4).

4. The low vibration and low noise worm gear reducer according to claim 1, characterized in that: A flange (2) is fixedly connected to the front end of the casing (1).

5. The low vibration and low noise worm gear reducer according to claim 1, characterized in that: A second connecting shaft (6) is fixedly mounted at the center of the shaft side surface of the transmission worm wheel (4), and a portion of the second connecting shaft (6) is located inside the housing (1).

6. The low-vibration and low-noise worm gear reducer according to claim 5, characterized in that: A guide groove (10) is provided on a side of the transmission worm wheel (4) away from the second connecting shaft (6), a plurality of support rods (11) are slidably arranged in the guide groove (10), and the support rods (11) are fixedly connected to the inner wall of the casing (1).

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