Shock-absorbing and noise-reducing worm and gear speed reducer

Abstract

The utility model discloses a shock absorption and noise reduction worm and gear speed reducer which comprises a speed reducer shell, a worm and a worm gear are installed in the speed reducer shell, a plurality of sets of oil outlet holes located in gear tooth gaps are formed in a circle of the outer edge of the worm gear, and an oil supply mechanism is installed in the speed reducer shell. The oil supply mechanism comprises an oil inlet hole formed in the worm wheel shaft, and channels communicated with an oil outlet hole are formed in the worm wheel shaft and the worm wheel. The channel comprises a center channel formed in the middle of the worm wheel shaft, the worm wheel shaft and the inner connecting part are provided with corresponding second channels, the second channels are equally arranged around the worm wheel shaft, and an annular cavity is formed in the inner side of the worm wheel and communicates with the oil outlet hole; in the working process, lubricating oil is sprayed out from all the oil outlets under the pressure effect, the lubricating oil can be directly sprayed out at the meshing position of the worm and the worm wheel, sufficient lubrication is achieved, friction is reduced, and noise is lowered; when the worm and the worm gear of the speed reducer shell are meshed to work, the damping base plate can conduct damping, and noise is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to worm gear reducer technical field, concretely relates to a shock absorption and noise reduction's worm gear reducer. BACKGROUND

[0002] Worm gear reducer is a kind of power transmission mechanism, it utilizes the speed converter of gear, and the rotation number of motor is reduced to the rotation number to be wanted, and larger torque is obtained.

[0003] The working principle is mainly realized by the meshing of worm and worm gear to reduce speed, when motor or other power source passes input shaft and transmits high-speed rotating power to worm, the spiral thread of worm and the tooth groove of worm gear are closely matched, so that the input high-speed rotating power is gradually transmitted, thereby the effect of speed reduction is realized.

[0004] When worm gear reducer works, vibration is difficult to avoid, so noise will be emitted, especially when the meshing place of internal worm and worm gear is not lubricated sufficiently, the generation of noise is intensified, although the existing reducer is added with lubricating oil, but the lubricating oil generally gathers at the bottom of reducer, and it is difficult to give sufficient lubrication to the meshing place. UTILITY MODEL CONTENTS

[0005] The utility model provides a shock absorption and noise reduction's worm gear reducer, lubricating oil is jetted out from each oil outlet hole under the pressure, and the lubricating oil can be jetted out directly at the meshing place of worm and worm gear, so as to achieve sufficient lubrication, reduce friction and reduce noise, when the meshing of worm and worm gear of reducer shell works, shock pad can shock absorption, further reduce noise, to solve the problems in the above background.

[0006] In order to realize the above object, the utility model provides the following technical scheme: a shock absorption and noise reduction's worm gear reducer, including the reducer shell, the both sides of the bottom of the reducer shell are welded with support;The worm and worm gear are installed in the reducer shell, the shaft of worm and worm gear is all installed on the reducer shell through bearing frame;A circle of the outer edge of worm gear is equipped with multiple groups of oil outlet holes in the tooth gap, and the oil supply mechanism is installed in the reducer shell.

[0007] Preferably, the oil supply mechanism includes an oil inlet hole formed on the worm shaft of the worm gear, and a channel is provided on the worm shaft and in the worm gear and connected to the oil outlet hole.

[0008] Preferably, the worm gear includes an inner connecting part and an outer gear part, the both sides of the outer edge of the inner connecting part are fixed with annular fixed plates, the inner edge of the outer gear part abuts against the outer edge of the inner connecting part and is located between the two annular fixed plates, and the annular fixed plates are fixed with the inner connecting part and the outer gear part by fastening screws.

[0009] Preferably, the channel comprises a central channel arranged in the middle of the worm shaft, the worm shaft is provided with a corresponding second channel with the inner connecting part, the second channel is arranged around the worm shaft in equal parts, the inner side of the worm is provided with an annular cavity, and the annular cavity is communicated with the oil outlet hole.

[0010] Preferably, the oil supply mechanism further comprises a sealing part wrapping the oil inlet hole on the worm shaft, a sealing cavity is formed in the sealing part, the bottom of the speed reducer shell is provided with a circulating oil pump, the circulating oil pump is provided with an oil inlet pipe abutting to the bottom of the speed reducer shell, and the circulating oil pump is provided with a connecting pipe communicated with the sealing cavity.

[0011] Preferably, the bottom of the support is provided with a shock pad.

[0012] Preferably, the shock pad is fixed on the bottom of the support through screws, the lower part of the support is provided with a groove, a supporting plate is arranged in the groove, a downward cylinder is arranged on the support, and the piston rod of the cylinder is fixedly connected with the supporting plate.

[0013] Preferably, the lower part of the speed reducer shell is provided with a wire outlet, and the wire outlet is sealed by a sealing element.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. During work, lubricating oil is sprayed from each oil outlet hole under the action of pressure, the lubricating oil can be directly sprayed at the meshing position of the worm and the worm wheel, full lubrication is achieved, friction is reduced, and noise is reduced.

[0016] 2. When the worm and the worm wheel of the speed reducer shell work, the shock pad can be damped to further reduce noise.

[0017] 3. The supporting plate is lowered by the cylinder to lift and support the whole speed reducer shell, and the shock pad is convenient to replace and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the structure of the utility model;

[0019] Figure 2 It is a side view of the structure of the utility model;

[0020] Figure 3 It is a sectional view of the oil inlet hole and the central channel of the utility model;

[0021] Figure 4 It is a sectional view of the central channel and the second channel of the utility model;

[0022] Figure 5The utility model discloses a schematic diagram of the section structure of the external gear part.

[0023] In the figure: 1, speed reducer shell, 2, support, 3, worm, 4, worm gear, 5, oil outlet hole, 6, worm shaft, 7, oil inlet hole, 8, inner connecting part, 9, external gear part, 10, annular fixed plate, 11, fastening screw, 12, central passage, 13, second passage, 14, annular cavity, 15, sealing part, 16, circulating oil pump, 17, oil inlet pipe, 18, connecting pipe, 19, shock pad, 20, screw, 21, support plate, 22, cylinder, 23, outlet. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a shock absorption and noise reduction worm and worm speed reducer, including speed reducer shell 1, the both sides welding of speed reducer shell 1 bottom have support 2, the worm 3 and worm gear 4 are installed in speed reducer shell 1, the axle of worm 3 and worm gear 4 all are installed on speed reducer shell 1 through bearing frame, a circle is equipped with a plurality of groups in the oil outlet hole 5 of the gear gap of the outer edge of worm gear 4, the oil supply mechanism is installed in speed reducer shell 1, when, the spiral thread of worm 3 and the tooth groove of worm gear 4 are closely matched when power mechanism is transmitted to worm 3, so that the input high speed rotating power is gradually transmitted, thereby realizing deceleration. During the period, the lubricating oil of speed reducer shell 1 bottom is pumped to worm gear 4 through the oil supply mechanism, and then flows out through the oil outlet hole 5, fully lubricates the gear teeth of worm gear 4, and reduces the meshing friction.

[0026] Specifically, the oil supply mechanism includes an oil inlet hole 7 formed on the worm shaft 6 of the worm gear 4, and a passage communicating with the oil outlet hole 5 is provided on the worm shaft 6 and in the worm gear 4. In this embodiment, the oil supply mechanism pumps the lubricating oil at the bottom of the speed reducer shell 1 to the oil inlet hole 7, then enters the worm gear 4 through the passage, and then sprays out through the oil outlet hole 5.

[0027] Specifically, the worm wheel 4 comprises an inner connecting part 8 and an outer gear part 9, the outer edge of the inner connecting part 8 is fixed with annular fixing plates 10, the inner edge of the outer gear part 9 abuts against the outer edge of the inner connecting part 8 and is located between the two annular fixing plates 10, the annular fixing plates 10 are fixed with the inner connecting part 8 and the outer gear part 9 through fastening screws 11; in the embodiment, the outer gear part 9 and the inner connecting part 8 can be conveniently assembled and disassembled through the annular fixing plates 10 and the inner connecting part 8 and the outer gear part 9 fixed through the fastening screws 11, which is beneficial to the opening of the internal cavity of the worm wheel 4.

[0028] Specifically, the channel comprises a central channel 12 opened in the middle of the worm shaft 6, the worm shaft 6 and the inner connecting part 8 are provided with corresponding second channels 13, the second channels 13 are arranged in equal parts around the worm shaft 6, the inner side of the worm wheel 4 is provided with an annular cavity 14, and the annular cavity 14 is communicated with the oil outlet hole 5; in the embodiment, the lubricating oil enters the central channel 12 through the oil inlet hole 7, then enters the annular cavity 14 through the second channel 13, and then flows out through the oil outlet hole 5, so that the gear teeth of the worm wheel 4 are fully lubricated and the meshing friction is reduced.

[0029] Specifically, the oil supply mechanism further comprises a sealing part 15 wrapping the oil inlet hole 7 on the worm shaft 6, a sealing cavity is formed in the sealing part 15, the bottom of the speed reducer shell 1 is provided with a circulating oil pump 16, the circulating oil pump 16 is provided with an oil inlet pipe 17 abutting against the bottom of the speed reducer shell 1 and a connecting pipe 18 communicated with the sealing cavity; in the embodiment, the lubricating oil gathered at the bottom of the speed reducer shell 1 is sent to the sealing part 15 through the connecting pipe 18, and then enters the central channel 12 through the oil inlet hole 7.

[0030] Specifically, the bottom of the support 2 is provided with a shock pad 19; in the embodiment, the shock pad 19 can reduce the shock and further reduce the noise when the worm 3 and the worm wheel 4 of the speed reducer shell 1 work.

[0031] Specifically, the shock pad 19 is fixed on the bottom of the support 2 through a screw 20, the lower part of the support 2 is provided with a recess, a supporting plate 21 is arranged in the recess, the support 2 is provided with a downward air cylinder 22, and the piston rod of the air cylinder 22 is fixedly connected with the supporting plate 21; in the embodiment, the supporting plate 21 is lowered through the air cylinder 22, the speed reducer shell 1 and the worm 3 and the worm wheel 4 are supported as a whole, the support 2 and the shock pad 19 are separated from the ground, then the screw 20 is unscrewed, and the shock pad 19 is replaced.

[0032] Specifically, the reducer housing 1 lower part is provided with an outlet 23, the outlet 23 is sealed by a sealing element; in this embodiment, the circulating oil pump 16 line can be connected to an external power source through the outlet 23, while sealing at the outlet 23 reduces the risk of lubricating oil leakage.

[0033] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail below.

[0034] Working principle: when the power mechanism transmits to the worm 3, the helical thread of the worm 3 and the tooth groove of the worm wheel 4 are tightly matched, so that the input high-speed rotating power is gradually transmitted, thereby achieving speed reduction. During the period, the circulating oil pump 16 line is connected to an external power source through the outlet 23, and then works, the circulating oil pump 16 sends the lubricating oil gathered at the bottom of the reducer housing 1 to the sealing part 15 through the connecting pipe 18, and then enters the central channel 12 through the oil inlet hole 7, and then enters the annular cavity 14 through the second channel 13, and then flows out through the oil outlet hole 5, fully lubricating the gear teeth of the worm wheel 4 and reducing the meshing friction; since the annular cavity 14 is sealed at the inner connecting part 8 and the annular fixed plate 10, the lubricating oil is sprayed out from each oil outlet hole 5 under the action of pressure, and the lubricating oil can be directly sprayed out at the meshing part of the worm 3 and the worm wheel 4, further achieving full lubrication, reducing friction and reducing noise; at the same time, the shock pad 19 can be damped when the worm 3 and the worm wheel 4 of the reducer housing 1 mesh and work, further reducing noise; at the same time, the support plate 21 is lowered by the air cylinder 22, supporting the reducer housing 1 and the worm 3 and the worm wheel 4 as a whole, facilitating the disengagement of the support 2 and the shock pad 19 from the ground, and then the screws 20 can be twisted off to replace the shock pad 19.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing and noise-reducing worm and gear speed reducer comprising a speed reducer housing (1), characterized in that, The reducer housing (1) bottom two sides are welded with support (2); the reducer housing (1) is equipped with worm (3) and worm wheel (4), the shaft of worm (3) and worm wheel (4) are all installed on the reducer housing (1) through bearing frame;The outer edge of worm wheel (4) is provided with a plurality of groups of oil outlet holes (5) in the gear gap, the reducer housing (1) is equipped with oil supply mechanism.

2. The shock-absorbing and noise-reducing worm and gear speed reducer according to claim 1, characterized in that, The oil supply mechanism includes oil inlet hole (7) opened on the worm shaft (6) of worm wheel (4), the worm shaft (6) and the worm wheel (4) are provided with a channel communicating with the oil outlet hole (5).

3. The shock-absorbing and noise-reducing worm gear speed reducer according to claim 2, characterized in that, The worm wheel (4) includes inner connecting part (8) and outer gear part (9), the outer edge of inner connecting part (8) is fixed with annular fixed plate (10), the inner edge of outer gear part (9) abuts against the outer edge of inner connecting part (8), and is located between the two annular fixed plates (10), the annular fixed plate (10) is fixed with the inner connecting part (8) and the outer gear part (9) through fastening screw (11).

4. The shock-absorbing and noise-reducing worm and gear speed reducer according to claim 3, characterized in that, The channel includes central channel (12) opened in the middle of worm shaft (6), the worm shaft (6) and the inner connecting part (8) are provided with corresponding second channel (13), the second channel (13) is arranged around the worm shaft (6) in equal parts, the inner side of worm wheel (4) is provided with annular cavity (14), and the annular cavity (14) is communicated with the oil outlet hole (5).

5. The shock-absorbing and noise-reducing worm and gear speed reducer according to claim 4, characterized in that, The oil supply mechanism further includes sealing part (15) wrapping the oil inlet hole (7) on the worm shaft (6), the sealing part (15) forms a sealed cavity, the bottom of the reducer housing (1) is provided with circulating oil pump (16), the circulating oil pump (16) is provided with oil inlet pipe (17) abutting to the bottom of the reducer housing (1), and the connecting pipe (18) communicated with the sealed cavity is further provided.

6. The shock-absorbing and noise-reducing worm and gear speed reducer according to claim 1, characterized in that, The bottom of the support (2) is provided with shock pad (19).

7. The shock-absorbing and noise-reducing worm gear speed reducer according to claim 6, characterized in that The shock pad (19) is fixed on the bottom of the support (2) through screw (20), the lower part of the support (2) is provided with a groove, the support plate (21) is arranged in the groove, the downward cylinder (22) is arranged on the support (2), and the piston rod of the cylinder (22) is fixedly connected with the support plate (21).

8. The shock-absorbing and noise-reducing worm and gear speed reducer according to claim 1, characterized in that, The lower part of the reducer housing (1) is provided with outlet (23), and the outlet (23) is sealed by sealing element.

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