Small-size speed reducer

Abstract

The invention relates to the technical field of speed reducers, and discloses a small-size speed reducer which comprises a speed reducer body. A crank mechanism is installed at the output end of the speed reducer body and comprises a main shaft and a connecting plate, the main shaft is installed at the output end of the speed reducer body, and the connecting plate is installed at the bottom of the end, away from the speed reducer body, of the main shaft. The main shaft and the connecting plate are used in cooperation, the overall size of the main shaft is increased, the main shaft is integrally embedded in the speed reducer body through the bolts, and the connecting piece used for being connected with the driven element is arranged deviating from the axis of the main shaft, so that the length of the whole speed reducer can be shortened, and radial torsion is increased; when the connecting piece is arranged on the connecting plate at one end of the whole main shaft, under the condition that the connecting piece is stressed, the structure of the connecting piece is not prone to being damaged in the using process.

Description

Technical Field

[0001] The invention relates to the technical field of reducers, and in particular to a small-sized reducer. Background Art

[0002] A reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the required number of revolutions and obtain a larger torque. It achieves the purpose of reducing speed and increasing torque through the rotation and revolution of the planetary gear.

[0003] In some applications where high torque output is required, such as robotic arms and cranes, existing reducers are equipped with a crank structure to improve the stability of power transmission and output torque, which requires workers to use tools to install the crank structure on the existing reducer for use. When the crank structure is installed on the reducer, the diameter of the crank structure is generally longer for ease of installation, resulting in weak radial torque, which is easy to cause damage during use.

[0004] To this end, the present invention provides a small-sized reducer. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a small-sized reducer, comprising a reducer body; a crank mechanism is installed at the output end of the reducer body, the crank mechanism comprises a main shaft and a connecting plate, the main shaft is installed at the output end of the reducer body, and a connecting plate is installed at the bottom of the main shaft away from the reducer body.

[0007] Preferably, two sets of bearings are installed inside the output end of the reducer body, and the main shaft is connected to the inner transmission of the bearings.

[0008] Preferably, a limit plate is installed at one end of the reducer body close to the bearing.

[0009] Preferably, mounting bases are installed on both sides of the bottom of the output end of the reducer body, a fixing hole is provided inside the mounting base, and a spring pin is installed on one side of the fixing hole close to the reducer body.

[0010] Preferably, a noise reduction shell is installed on the outer side of the reducer body, the inner wall of the noise reduction shell is provided with a noise reduction layer, and the spring pin passes through the interior of the noise reduction layer.

[0011] Preferably, a water cooling plate is installed inside the noise reduction shell, and two groups of conduits are installed inside the water cooling plate passing through the noise reduction shell.

[0012] Preferably, the outer surface of the water-cooling plate is provided with a corrugated metal sheet, and the outer surface of the corrugated metal sheet is connected to a noise reduction layer.

[0013] Preferably, a heat sink is installed on the outer surface of the noise reduction shell, and a plurality of groups of heat sinks are equidistantly distributed on the outer surface of the noise reduction shell.

[0014] Preferably, an oil filling hole is installed through the top of the reducer body and the inside of the noise reduction layer, and a plug is installed inside the oil filling hole.

[0015] 1. The beneficial effects of the present invention are as follows: a small-sized reducer described in the present invention is used in combination with a main shaft and a connecting plate. By increasing the overall size of the main shaft and embedding the main shaft as a whole inside the reducer body by using bolts, the connecting piece for connecting the passive element is set away from the axis of the main shaft, so that the length of the entire reducer can be shortened and the radial torque can be increased. When the connecting piece is set on the connecting plate at one end of the entire main shaft, when the connecting piece is subjected to force, it is not easy to cause its structure to be damaged during use.

[0016] 2. A small-sized reducer described in the present invention is used in combination with a noise reduction shell, a noise reduction layer, a water cooling plate and a heat sink. The noise reduction layer can absorb and isolate the noise, and the noise reduction shell can further reduce the spread of the noise. The flow of the coolant inside the water cooling plate can take away the heat on the reducer body, and the heat sink can export part of the heat in the coolant to improve the cooling effect of the coolant in the water cooling plate. By setting the structure as a whole, the reducer can be cooled and the noise can be reduced, and it is also convenient for workers to perform maintenance in the later stage, so that the reducer can work better. 2. A small-sized reducer described in the present invention arranges a corrugated metal sheet between a water-cooling plate and a noise reduction layer. When the water-cooling plate is deformed due to thermal expansion and contraction, the corrugated metal sheet itself will also be deformed because it is not squeezed, so that both sides of the corrugated metal sheet are always tightly fitted with the water-cooling plate and the noise reduction layer. The corrugated metal sheet can provide a certain deformation space for the water-cooling plate, thereby preventing the water-cooling plate from expanding due to excessive temperature, causing deformation of the outer side of the device, and affecting the noise reduction effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side perspective view of an embodiment of the present invention; Figure 2 is a front perspective view of an embodiment of the present invention; Figure 3 It is a schematic diagram of the internal structure of the side part of the present invention; Figure 4 yes Figure 3 A partial enlarged view of the middle part; Figure 5 It is a schematic diagram of the internal structure of the noise reduction shell part in the present invention.

[0018] Description of reference numerals: 1. Reducer body; 101. Bearing; 102. Mounting base; 103. Fixing hole; 104. Spring pin; 105. Limit plate; 2. Crank mechanism; 201. Main shaft; 202. Connecting plate; 3. Noise reduction shell; 301. Noise reduction layer; 302. Water cooling plate; 303. Conduit; 304. Heat sink; 305. Corrugated metal sheet; 4. Oil filling hole; 401. Plug. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0020] Embodiment 1 The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments. Figures 1 to 5 , this application provides a small-sized reducer, please refer to Figure 1 and Figure 2 , including a reducer body 1; a crank mechanism 2 is installed at the output end of the reducer body 1, and the crank mechanism 2 includes a main shaft 201 and a connecting plate 202. The main shaft 201 is installed at the output end of the reducer body 1, and a connecting plate 202 is installed at the bottom of the main shaft 201 away from the reducer body 1.

[0021] Specifically, the connecting plate 202 is fixedly installed at one end of the main shaft 201 by bolts. The connecting plate 202 is used to install the connecting piece. The crank mechanism 2 is integrally embedded in the output end of the reducer body 1 by bolts. By increasing the overall size of the main shaft 201, the connecting piece used to connect the passive element is offset from the axis of the main shaft 201, thereby shortening the length of the entire reducer body 1. The connecting piece is arranged on the entire crank mechanism 2, and is not easily damaged when the connecting piece is subjected to force.

[0022] Please refer to Figure 3 Two sets of bearings 101 are installed inside the output end of the reducer body 1, and the main shaft 201 is connected to the inside of the bearing 101.

[0023] Please refer to Figure 3 A limit plate 105 is installed at one end of the reducer body 1 close to the bearing 101.

[0024] Specifically, in order to assist the main shaft 201 in rotating, before use, the worker installs two sets of bearings 101 inside the output end of the reducer body 1, so that the inner wall of the bearing 101 contacts the outer wall of the main shaft 201, and then uses bolts to fix the limit plate 105 on the end of the reducer body 1 close to the bearing 101. The bearing 101 can be limited by the limit plate 105 to prevent the bearing 101 from shifting inside the reducer body 1 and affecting its use. The bearing 101 can assist the main shaft 201 in rotating and promote the rotation of the main shaft 201.

[0025] Please refer to Figure 1 and Figure 2 A mounting base 102 is installed on both sides of the bottom of the output end of the reducer body 1. A fixing hole 103 is provided inside the mounting base 102. A spring pin 104 is installed on one side of the fixing hole 103 close to the reducer body 1.

[0026] Please refer to Figure 4 A noise reduction shell 3 is installed on the outer side of the reducer body 1 , a noise reduction layer 301 is provided on the inner wall of the noise reduction shell 3 , and the spring pin 104 passes through the interior of the noise reduction layer 301 .

[0027] Specifically, in order to achieve noise reduction of the reducer body 1, the worker can fix and install the reducer body 1 by using bolts to pass through the fixing holes 103 inside the mounting base 102, and the spring pin 104 is a straight spring button. The bottom of the noise reduction shell 3 is provided with a straight groove corresponding to the spring pin 104. When the spring pin 104 passes through the straight groove inside the noise reduction shell 3, the spring pin 104 is rotated to make the spring pin 104 and the straight groove staggered, so that the noise reduction shell 3 can be fixedly installed on the outside of the reducer body 1. By fixing the noise reduction shell 3 in this way, it is convenient for workers to install it and it is also convenient for disassembly later. The noise reduction layer 301 is composed of noise reduction cotton. The noise reduction layer 301 has good sound absorption and sound insulation performance. When noise is transmitted from the reducer body 1 during operation, the noise reduction layer 301 can absorb and isolate the noise, thereby reducing the propagation of the noise, and the noise reduction shell 3 can further reduce the propagation of the noise.

[0028] Please refer to Figure 1 and Figure 4 A water cooling plate 302 is installed inside the noise reduction shell 3 , and two groups of conduits 303 are installed inside the water cooling plate 302 through the noise reduction shell 3 .

[0029] Please refer to Figure 1 The outer surface of the noise reduction shell 3 is provided with a heat dissipation plate 304, and a plurality of heat dissipation plates 304 are evenly distributed on the outer surface of the noise reduction shell 3. Please refer to Figure 5The outer surface of the water cooling plate 302 is provided with a corrugated metal sheet 305 . The corrugated metal sheet 305 is an elastic component that can be deformed and is made of a heat-conducting metal material. The outer surface of the corrugated metal sheet 305 is connected with a noise reduction layer 301 .

[0030] Specifically, in order to achieve heat dissipation of the reducer body 1 and reduce the heat accumulation inside the reducer body 1, the inner wall of the water-cooled plate 302 is in contact with the outer surface of the reducer body 1, and the external coolant is transported to the inside of the water-cooled plate 302 through a group of conduits 303, and then the coolant flow inside the water-cooled plate 302 can take away the heat on the reducer body 1, avoid heat accumulation on the reducer body 1, reduce the aging speed of its internal parts, and thus extend the service life of the parts, and then the heated coolant can be discharged and replaced through another group of conduits 303, and the water-cooled plate 302 and the noise reduction layer 301 are connected by a corrugated metal sheet 305. Next, when the water-cooled plate 302 is deformed due to thermal expansion and contraction, the corrugated metal sheet 305 itself will be squeezed and deformed, so that the two sides of the corrugated metal sheet 305 are always tightly fitted with the water-cooled plate 302 and the noise reduction layer 301, and the corrugated metal sheet 305 can provide a certain deformation space for the water-cooled plate 302 to prevent the water-cooled plate 302 from expanding due to excessive temperature, reducing the sealing of the device and affecting the noise reduction effect of the device. The heat on the water-cooled plate 302 is guided to the heat sink 304 through the corrugated metal sheet 305, and the heat sink 304 can extract part of the heat in the coolant to improve the cooling effect of the coolant in the water-cooled plate 302.

[0031] Please refer to Figure 1 and Figure 2 An oil filling hole 4 is installed through the top of the reducer body 1 and the inside of the noise reduction layer 301, and a plug 401 is installed inside the oil filling hole 4.

[0032] Specifically, in order to lubricate the transmission components inside the reducer body 1, the plug 401 is removed from the oil filling hole 4, and then the external lubricating oil can be directly injected into the transmission components inside the reducer body 1 through the oil filling hole 4, and then the transmission components inside the reducer body 1 are lubricated.

[0033] Working principle: The worker uses bolts to embed the crank mechanism 2 as a whole inside the output end of the reducer body 1, and then sets the connecting piece on the entire crank mechanism 2. When the reducer body 1 is working, the coolant flowing inside the water-cooled plate 302 can take away the heat on the reducer body 1, and then the heat on the water-cooled plate 302 is guided to the heat sink 304 through the wavy metal sheet 305. The heat sink 304 can export part of the heat in the coolant. At the same time, the noise can be absorbed and isolated through the noise reduction layer 301 to reduce the propagation of noise, and the noise propagation can be further reduced through the noise reduction shell 3.

[0034] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A small-sized reducer, comprising a reducer body (1); characterized in that: The output end of the reducer body (1) is equipped with a crank mechanism (2), the crank mechanism (2) comprising a main shaft (201) and a connecting plate (202), the output end of the reducer body (1) is equipped with a main shaft (201), and the bottom of the main shaft (201) away from the reducer body (1) is equipped with a connecting plate (202).

2. A small-sized reducer according to claim 1, characterized in that: Two sets of bearings (101) are installed inside the output end of the reducer body (1), and the inside of the bearings (101) is transmission-connected with a main shaft (201).

3. A small-sized reducer according to claim 1, characterized in that: A limit plate (105) is installed at one end of the reducer body (1) close to the bearing (101).

4. A small-sized reducer according to claim 1, characterized in that: Mounting bases (102) are installed on both sides of the bottom of the output end of the reducer body (1), a fixing hole (103) is provided inside the mounting base (102), and a spring pin (104) is installed on one side of the fixing hole (103) close to the reducer body (1).

5. A small-sized reducer according to claim 1, characterized in that: A noise reduction shell (3) is installed on the outer side of the reducer body (1); a noise reduction layer (301) is provided on the inner wall of the noise reduction shell (3); and a spring pin (104) passes through the interior of the noise reduction layer (301).

6. A small-sized reducer according to claim 5, characterized in that: A water cooling plate (302) is installed inside the noise reduction shell (3), and two groups of conduits (303) are installed on the water cooling plate (302) passing through the interior of the noise reduction shell (3).

7. A small-sized reducer according to claim 5, characterized in that: A heat sink (304) is installed on the outer surface of the noise reduction shell (3), and a plurality of groups of heat sinks (304) are equidistantly distributed on the outer surface of the noise reduction shell (3).

8. A small-sized reducer according to claim 6, characterized in that: The outer surface of the water cooling plate (302) is provided with a corrugated metal sheet (305), and the outer surface of the corrugated metal sheet (305) is connected to a noise reduction layer (301).

9. A small-sized reducer according to claim 1, characterized in that: An oil filling hole (4) is installed through the top of the reducer body (1) and the interior of the noise reduction layer (301), and a plug (401) is installed inside the oil filling hole (4).

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