Negative-pressure air draft cooling device for speed reducer and using method of negative-pressure air draft cooling device

Abstract

The invention discloses a speed reducer negative-pressure air draft cooling device and a using method thereof, and belongs to the technical field of speed reducers, the speed reducer negative-pressure air draft cooling device comprises a motor, a speed reducer, a connector and a main board, the motor and the speed reducer are detachably installed on the main board, an output shaft of the motor is connected with an input shaft of the speed reducer through the connector, and the speed reducer negative-pressure air draft cooling device further comprises a base, the bearing is used for bearing devices; the cooling mechanism is mounted on the speed reducer and used for cooling the interior of the speed reducer; wherein the cooling mechanism comprises an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are both fixedly connected to the speed reducer, the air outlet pipe is fixedly connected to a box body cover plate of the speed reducer, the air inlet pipe and the air outlet pipe are both located above a main shaft of the speed reducer, and an air outlet of the air outlet pipe is connected with an air inlet of the fan; according to the speed reducer, the interior of the speed reducer can be cooled, and sealing in the speed reducer can be protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of speed reducers, and in particular relates to a speed reducer negative pressure exhaust cooling device and a use method thereof. Background Art

[0002] Under closed working conditions or when the outdoor temperature is high in summer, the internal temperature of the reducer is high. When the transported material is water slag (30-50℃ at normal temperature), the ambient temperature is high, which will cause the gas in the reducer to expand and positive pressure to occur. In addition, the temperature rise reduces the oil concentration in the reducer, and the temperature of the reducer casing remains at around 80℃ for a long time. Serious oil leakage occurs at the seals, polluting the environment, affecting production and equipment compliance, and having a serious impact on equipment repair and maintenance.

[0003] The cooling measures generally adopted include placing an axial flow hair dryer next to the reducer to directly blow the outer shell of the reducer to achieve the purpose of cooling the machine. Practice has shown that this method is not very effective. Some methods also use oil pumps to extract the lubricating oil in the reducer for circulating cooling to achieve the cooling effect. Although it has the effect of lowering the temperature, it requires a large investment. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a reducer negative pressure exhaust cooling device and a method of using the same, which solves the above-mentioned problems.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a reducer negative pressure exhaust cooling device, including a motor, a reducer, a connecting joint and a main board, the motor and the reducer can be detachably mounted on the main board, the output shaft of the motor is connected to the input shaft of the reducer through a connecting head, and also includes:

[0006] A base, used for supporting devices;

[0007] The cooling mechanism is installed on the reducer and is used to cool the interior of the reducer;

[0008] Among them, the cooling mechanism includes an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are both fixedly connected to the reducer, the air outlet pipe is fixedly connected to the box cover of the reducer, the air inlet pipe and the air outlet pipe are both located above the main shaft of the reducer, and the air outlet of the air outlet pipe is connected to the air inlet of the fan.

[0009] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0010] Further technical solution: the air outlet area of ​​the air outlet pipe is larger than the sum of the areas of the air inlet of the air inlet pipe and the air outlet of the reducer.

[0011] Further technical solutions also include: a shock absorbing structure installed on the motor to reduce the shock of the motor and the reducer.

[0012] Further technical solution: The shock absorbing mechanism includes a mounting seat, a box, a first plate, a column and an elastic member, the mounting seat is detachably connected to the main board, the mounting seat is rotatably connected to the screw rod penetrating the box, the screw rod is threadedly connected to the box, the column penetrates the first plate and is fixedly connected to the first plate, the column is fixedly connected to the mounting seat, both ends of the elastic member are fixedly connected to the first plate and the box, the box is detachably connected to the third plate, the third plate is fixedly connected to the shock absorbing pad fixedly connected to the motor, the box is fixedly connected to the second plate, the second plate is threadedly connected to the screw rod, and further includes:

[0013] The driving assembly is installed on the second plate body and is used to drive the lead screw to perform rotational movement in the vertical direction.

[0014] Further technical solution: The driving assembly includes a micro motor, a carrier frame and a gear pair. The micro motor can be detachably mounted on the second plate body. The micro motor is transmission-connected to the carrier frame through the gear pair. The spur gear mounted on the screw rod in the gear pair is slidingly matched with the screw rod. The spur gear is slidingly matched with a limiting slide groove provided on the screw rod. One end of the carrier frame is fixedly connected to the second plate body, and the other end of the carrier frame is rotationally connected to the gear pair.

[0015] Further technical solutions also include: a detection mechanism for detecting the amplitude of the mainboard and the temperature inside the reducer.

[0016] Further technical solution: The detection mechanism includes a vibration sensor installed on the mainboard and a temperature sensor installed in the reducer.

[0017] The method for using the above-mentioned reducer negative pressure exhaust cooling device comprises the following steps:

[0018] S1. The relevant technicians start the motor according to the demand. At this time, the vibration sensor and temperature sensor in the detection mechanism are used to detect the temperature in the reducer and the amplitude of the mainboard, so as to obtain temperature information and amplitude information;

[0019] S2, comparing the acquired temperature information and amplitude information with the corresponding temperature threshold and amplitude threshold. If the temperature information exceeds the preset temperature threshold, the fan is started to cool the space in the reducer to make the temperature information within the temperature threshold. If the amplitude information exceeds the amplitude threshold, the micro motor is started to adjust the damping effect of the damping mechanism to make the amplitude information within the amplitude threshold.

[0020] S3. When the temperature information and the amplitude information are within the corresponding temperature threshold and the amplitude threshold, the temperature information and the amplitude information are dimensionlessly processed and then introduced into the operation evaluation model, and the operation coefficient is output. If the obtained operation coefficient is not within the preset coefficient threshold, the temperature information and the amplitude information are adjusted until the operation coefficient is within the coefficient threshold, wherein the operation evaluation model is expressed as:

[0021]

[0022] Among them, YP(T,f) represents the operating coefficient, T represents temperature information, f represents amplitude information, α represents temperature influence coefficient, represents amplitude influence coefficient, 0.54≤α≤0.86, 0.73≤β≤0.96, 0.8≤μ≤1.2.

[0023] Beneficial Effects

[0024] The present invention provides a negative pressure exhaust cooling device for a reducer and a method for using the same, which has the following beneficial effects compared with the prior art:

[0025] 1. The present invention exhausts air outwards through the fan so that the heat inside the reducer is fully exchanged. In addition, the intake air is compressed air, which ensures the cleanliness of the interior of the reducer. At the same time, the intake air temperature is low, so that the heat exchange effect is better. The outlet area is larger than the inlet area, and a small negative pressure is formed in the inner cavity of the reducer, and the sealing part of the reducer will not be damaged (under positive pressure, the inner cavity pressure cannot be released, and the seal is damaged from the weakest sealing position, and oil pollution seriously affects the on-site environment). BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 Schematic diagram of the structural distribution of each component of the present invention.

[0028] Figure 3 For the present invention Figure 2 A-section structure enlarged schematic diagram.

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of part B.

[0030] Figure 5 It is a schematic diagram of the installation structure of the cooling mechanism 7 of the present invention.

[0031] Notes on the accompanying drawings: 1. Motor; 2. Reducer; 3. Connecting joint; 4. Base; 5. Shock-absorbing mechanism; 501. Mounting seat; 502. Box body; 503. First plate body; 504. Column; 505. Elastic member; 506. Second plate body; 507. Screw rod; 508. Third plate body; 509. Shock-absorbing pad; 510. Driving assembly; 5101. Micro motor; 5102. Carrying frame; 5103. Gear pair; 6. Main board; 7. Cooling mechanism; 701. Inlet pipe; 702. Outlet pipe; 703. Fan. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] See also Figure 1 to Figure 5 , provided in one embodiment of the present invention, is a negative pressure exhaust cooling device for a reducer, comprising a motor 1, a reducer 2, a connecting joint 3 and a main board 6, wherein the motor 1 and the reducer 2 can be detachably mounted on the main board 6, and the output shaft of the motor 1 is connected to the input shaft of the reducer 2 through a connecting joint, and further comprising:

[0035] Base 4, used for supporting devices;

[0036] The shock absorbing structure is installed on the motor 1 and is used for shock absorbing the motor 1 and the reducer 2;

[0037] The cooling mechanism 7 is installed on the reducer 2 and is used to cool the interior of the reducer 2;

[0038] A detection mechanism, used to detect the amplitude of the main board 6 and the temperature in the reducer 2, including a vibration sensor installed on the main board 6 and a temperature sensor installed in the reducer 2;

[0039] The cooling mechanism 7 includes an air inlet pipe 701 and an air outlet pipe 702, both of which are fixedly connected to the reducer 2, and the air outlet pipe 702 is fixedly connected to the cover plate of the reducer 2. The air inlet pipe 701 and the air outlet pipe 702 are both located above the main shaft of the reducer 2, and the air outlet of the air outlet pipe 702 is connected to the air inlet of the fan 703 (not shown in the figure), and the air outlet area of ​​the air outlet pipe 702 is larger than the air inlet area of ​​the air inlet pipe 701. The sum of the areas of the air inlet and the air outlet of the reducer 2 uses wind to cause negative pressure to form between the external environment and the inside of the reducer 2, so that the external air enters the reducer 2 from the air inlet pipe 701 and is discharged from the air outlet pipe 702. Moreover, since the air outlet area of ​​the air outlet pipe 702 is larger than the sum of the areas of the air inlet of the air inlet pipe 701 and the air outlet of the reducer 2, the gas in the reducer 2 forms a negative pressure while flowing and exchanging, which has the effect of negative pressure sealing, so that the oil seal position in the reducer 2 will not leak oil.

[0040] Preferably, the motor 1 and the reducer 2 are detachably connected to the main board 6 by a bolt assembly. Those skilled in the art should know that the purpose of this arrangement is to limit the motor 1 and the reducer 2 to the main board 6. Therefore, in some embodiments, the motor 1 and the reducer 2 can also be detachably installed on the main board 6 by snap-fitting, or fixedly connected to the main board 6 by welding.

[0041] In the embodiment of the present invention, the heat inside the reducer 2 is fully exchanged by exhausting air outwards through the fan 703. In addition, the intake air is compressed air, which ensures the cleanliness of the interior of the reducer. At the same time, the intake air temperature is low, thereby achieving a better heat exchange effect. The outlet area is larger than the inlet area, and a small negative pressure is formed in the inner cavity of the reducer, and the sealing part of the reducer will not be damaged (under positive pressure, the inner cavity pressure cannot be released, and the seal is damaged from the weakest sealing position, and oil pollution seriously affects the on-site environment).

[0042] See also Figure 2 to Figure 4As an embodiment of the present invention, the shock absorbing mechanism includes a mounting seat 501, a box body 502, a first plate body 503, a column 504 and an elastic member 505, the mounting seat 501 is detachably connected to the main board 6, the mounting seat 501 is rotatably connected to a screw rod 507 penetrating the box body 502, the screw rod 507 is threadedly connected to the box body 502, the column 504 penetrates the first plate body 503 and is fixedly connected to the first plate body 503, the column 504 is fixedly connected to the mounting seat 501, both ends of the elastic member 505 are fixedly connected to the first plate body 503 and the box body 502, the box body 502 is detachably connected to the third plate body 508, the third plate body 508 is fixedly connected to a shock absorbing pad 509 fixedly connected to the motor 1, the box body 502 is fixedly connected to a second plate body 506, the second plate body 506 is threadedly connected to the screw rod 507, and further includes:

[0043] A driving assembly 510, mounted on the second plate 506, for driving the screw rod 507 to perform a rotational movement in a vertical direction;

[0044] The driving assembly 510 comprises a micro motor 5101, a carrier 5102 and a gear pair 5103. The micro motor 5101 is detachably mounted on the second plate 506. The micro motor 5101 is transmission-connected to the carrier 5102 through the gear pair 5103. The flat gear mounted on the screw rod 507 in the gear pair 5103 is slidably matched with the screw rod 507. The flat gear is slidably matched with the limiting slide groove provided on the screw rod 507. One end of the carrier 5102 is fixedly connected to the second plate 506. The other end of the carrier 5102 is rotationally connected to the gear pair 5103. The micro motor 5101 is used to drive the screw rod 507 to rotate in the vertical direction through the gear pair 5103. Since the screw rod 507 is threadedly connected to the box 502 and the second plate 506, the screw rod 507 performs a spiral motion in the vertical direction under the drive of the micro motor 5101.

[0045] Preferably, the elastic member 505 is a spring. Those skilled in the art should know that the purpose of this arrangement is to provide elastic support for the first plate 503 and the mounting seat 501 .

[0046] In the embodiment of the present invention, a micro motor 5101 is used to drive the lead screw 507 to perform rotational movement in the vertical direction through a gear pair 5103. Since the lead screw 507 is threadedly connected to the box body 502 and the second plate body 506, the lead screw 507 performs spiral movement in the vertical direction under the drive of the micro motor 5101. At this time, the lead screw 507 pulls the mounting seat 501 to perform linear movement in the vertical direction. The mounting seat 501 drives the column 504 to push the first plate body 503 to perform synchronous linear movement. The first plate body 503 compresses or releases the elastic member 505 to adjust the elastic supporting force of the elastic member 505, thereby adjusting the shock absorbing effect of the shock absorbing mechanism.

[0047] The method for using the above-mentioned reducer negative pressure exhaust cooling device comprises the following steps:

[0048] S1. The relevant technician starts the motor 1 according to the demand. At this time, the vibration sensor and the temperature sensor in the detection mechanism are used to detect the temperature in the reducer 2 and the amplitude of the main board 6, so as to obtain the temperature information and the amplitude information;

[0049] S2, compare the acquired temperature information and amplitude information with the corresponding temperature threshold and amplitude threshold. If the temperature information exceeds the preset temperature threshold, start the fan 703 to cool the space in the reducer 2, so that the temperature information is within the temperature threshold. If the amplitude information exceeds the amplitude threshold, start the micro motor 5101 to adjust the damping effect of the damping mechanism, so that the amplitude information is within the amplitude threshold.

[0050] S3. When the temperature information and the amplitude information are within the corresponding temperature threshold and the amplitude threshold, the temperature information and the amplitude information are dimensionlessly processed and then introduced into the operation evaluation model, and the operation coefficient is output. If the obtained operation coefficient is not within the preset coefficient threshold, the temperature information and the amplitude information are adjusted until the operation coefficient is within the coefficient threshold, wherein the operation evaluation model is expressed as:

[0051]

[0052] Among them, YP(T,f) represents the operating coefficient, T represents temperature information, f represents amplitude information, α represents temperature influence coefficient, represents amplitude influence coefficient, 0.54≤α≤0.86, 0.73≤β≤0.96, 0.8≤μ≤1.2.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure exhaust cooling device for a reducer, comprising a motor (1), a reducer (2), a connecting joint (3) and a main board (6), wherein the motor (1) and the reducer (2) can be detachably mounted on the main board (6), and the output shaft of the motor (1) is connected to the input shaft of the reducer (2) via a connecting joint, characterized in that: Also includes: A base (4) for supporting the device; A cooling mechanism (7) is installed on the reducer (2) and is used to cool the interior of the reducer (2); The cooling mechanism (7) comprises an air inlet pipe (701) and an air outlet pipe (702), the air inlet pipe (701) and the air outlet pipe (702) are both fixedly connected to the reducer (2), the air outlet pipe (702) is fixedly connected to the box cover of the reducer (2), the air inlet pipe (701) and the air outlet pipe (702) are both located above the main shaft of the reducer (2), and the air outlet of the air outlet pipe (702) is connected to the air inlet of the fan (703).

2. The negative pressure exhaust cooling device for reducer according to claim 1, characterized in that: The area of ​​the air outlet of the air outlet pipe (702) is greater than the sum of the areas of the air inlet of the air inlet pipe (701) and the air outlet of the reducer (2).

3. The negative pressure exhaust cooling device for reducer according to claim 2, characterized in that: Also includes: The shock absorbing structure is installed on the motor (1) and is used to perform shock absorbing treatment on the motor (1) and the reducer (2).

4. The negative pressure exhaust cooling device for a reducer according to claim 3 is characterized in that: The shock absorbing mechanism comprises a mounting seat (501), a box body (502), a first plate body (503), a column (504) and an elastic member (505); the mounting seat (501) is detachably connected to the main board (6); the mounting seat (501) is rotatably connected to a screw rod (507) that passes through the box body (502); the screw rod (507) is threadedly connected to the box body (502); the column (504) passes through the first plate body (503) and is fixedly connected to the first plate body (503); the column (504) is fixedly connected to the mounting seat (501), the two ends of the elastic member (505) are fixedly connected to the first plate body (503) and the box body (502), the box body (502) is detachably connected to the third plate body (508), the third plate body (508) is fixedly connected to the shock-absorbing pad (509) fixedly connected to the motor (1), the box body (502) is fixedly connected to the second plate body (506), the second plate body (506) is threadedly connected to the screw rod (507), and further comprises: The driving assembly (510) is mounted on the second plate (506) and is used to drive the screw rod (507) to perform a rotational movement in a vertical direction.

5. The negative pressure exhaust cooling device for a reducer according to claim 4, characterized in that: The driving assembly (510) comprises a micro motor (5101), a carrier (5102) and a gear pair (5103); the micro motor (5101) is detachably mounted on the second plate body (506); the micro motor (5101) is transmission-connected to the carrier body (5102) via the gear pair (5103); a spur gear mounted on the lead screw (507) in the gear pair (5103) is slidably engaged with the lead screw (507); the spur gear is slidably engaged with a limiting slide groove provided on the lead screw (507); one end of the carrier body (5102) is fixedly connected to the second plate body (506); and the other end of the carrier body (5102) is rotationally connected to the gear pair (5103).

6. The negative pressure exhaust cooling device for a reducer according to claim 5, characterized in that: Also includes: The detection mechanism is used to detect the amplitude of the main board (6) and the temperature inside the reducer (2).

7. The negative pressure exhaust cooling device for a reducer according to claim 6, characterized in that: The detection mechanism comprises a vibration sensor installed on the main board (6) and a temperature sensor installed in the reducer (2).

8. The method for using the negative pressure exhaust cooling device for a reducer according to claim 7, characterized in that: The following steps are involved: S1. The relevant technician starts the motor (1) according to the demand, and then uses the vibration sensor and the temperature sensor in the detection mechanism to detect the temperature in the reducer (2) and the amplitude of the main board (6) accordingly, so as to obtain temperature information and amplitude information; S2, comparing the acquired temperature information and amplitude information with the corresponding temperature threshold and amplitude threshold. If the temperature information exceeds the preset temperature threshold, the fan (703) is started to cool the space in the reducer (2) so that the temperature information is within the temperature threshold. If the amplitude information exceeds the amplitude threshold, the micro motor (5101) is started to adjust the damping effect of the damping mechanism so that the amplitude information is within the amplitude threshold. S3. When the temperature information and the amplitude information are within the corresponding temperature threshold and the amplitude threshold, the temperature information and the amplitude information are dimensionlessly processed and then introduced into the operation evaluation model, and the operation coefficient is output. If the obtained operation coefficient is not within the preset coefficient threshold, the temperature information and the amplitude information are adjusted until the operation coefficient is within the coefficient threshold, wherein the operation evaluation model is expressed as: Among them, YP(T,f) represents the operating coefficient, T represents temperature information, f represents amplitude information, α represents temperature influence coefficient, represents amplitude influence coefficient, 0.54≤α≤0.86, 0.73≤β≤0.96, 0.8≤μ≤1.2.

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