Fixing base and fixing device

Abstract

The utility model provides a fixing base and a fixing device, and belongs to the technical field of speed reducers. The fixing base is used for fixing the speed reducer and comprises a base body and at least two fixing assemblies, the base body comprises a mounting frame and an extending frame connected to one side of the mounting frame in the horizontal direction, the mounting frame is used for supporting the speed reducer, the fixing assemblies are arranged in the circumferential direction of the speed reducer at intervals, and each fixing assembly comprises a pressing plate and a first fixing piece; the pressing plate is arranged on the mounting frame, a mounting space for accommodating the speed reducer is defined between the pressing plate and the mounting frame, and one end of the first fixing part penetrates through the pressing plate and is used for connecting the pressing plate to the mounting frame, so that the speed reducer is propped against the mounting frame by the pressing plate. The fixing device comprises the fixing base and a lock shaft assembly, and the lock shaft assembly is used for being connected with a barring shaft of the speed reducer and locking the barring shaft of the speed reducer in the circumferential direction. According to the utility model, the speed reducer can be quickly fixed when the slipping torque is verified, so that the manpower is reduced, and the verification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a fixed base and a fixing device. Background Art

[0002] A gravel filter is a filtering machine installed in a condenser at the seawater inlet. It can prevent gravel and marine organisms from entering the titanium tubes of the condenser, thereby preventing the titanium tubes of the condenser from being blocked or worn by foreign objects. The gravel filter can backwash the filter screen through a backwash rotor in the backwash device, so as to wash away the sundries accumulated on the filter screen and discharge the sundries from the backwash pipeline to achieve the purpose of cleaning the filter screen.

[0003] A worm and worm gear speed reducer is a kind of speed reducer and belongs to a component in the transmission system of a gravel filter. One end of the speed reducer is connected to an electric motor, and the other end is connected to a universal joint (transmission mechanism). The worm and worm gear speed reducer can adjust the torque output by the electric motor to reduce the rotational speed and increase the torque. The worm and worm gear speed reducer can adjust the torque output by the electric motor and output the adjusted torque to the backwash rotor of the gravel filter, so as to ensure that the backwash rotor can stably perform the backwash operation.

[0004] When the gravel filter gets stuck during operation, the output torque of the worm will be greater than the rated value of the slipping torque, and slipping will occur at the mating part of the worm gear and the worm, blocking the transmission of torque. Therefore, during the maintenance of the gravel filter, it is necessary to calibrate the slipping torque of the worm and worm gear speed reducer. In the related art, when calibrating the slipping torque, only the worm and worm gear speed reducer can be fixed manually. Among them, the adjustment of the slipping torque of a single speed reducer requires 4 people to cooperate and takes 1-2 hours to complete. Two people step on the bottom flange of the speed reducer, one person uses a crank and a sling to fix the turning shaft, and one person uses a torque wrench to calibrate the slipping torque, resulting in a very labor-consuming and long operation time for the entire slipping torque adjustment process. How to provide a fixing device for a worm and worm gear speed reducer to save labor and improve the calibration efficiency of the slipping torque has become an urgent problem to be solved. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a fixed base and a fixing device for fixing a speed reducer, which can fix the speed reducer when calibrating the slipping torque, thereby reducing labor and improving the calibration efficiency of the slipping torque.

[0006] To achieve the above object, a first aspect of an embodiment of the utility model provides a fixed base for fixing a speed reducer, and the fixed base includes:

[0007] A base, comprising a mounting frame and an extension frame connected to one side of the mounting frame in a horizontal direction, wherein the mounting frame is used to support the reducer; and

[0008] At least two fixing components are arranged at intervals along the circumference of the reducer, and the fixing components include a pressure plate and a first fixing member. The pressure plate is arranged on the mounting frame and defines an installation space for accommodating the reducer between the pressure plate and the mounting frame. One end of the first fixing member passes through the pressure plate and is used to connect the pressure plate to the mounting frame so that the pressure plate abuts the reducer against the mounting frame.

[0009] According to some embodiments of the present utility model, the fixing assembly further includes:

[0010] A second fixing member, one end of which is passed through the pressing plate and is used to abut against the reducer or the mounting bracket.

[0011] According to some embodiments of the present invention, the extension frame is movably connected to the mounting frame along a horizontal direction.

[0012] According to some embodiments of the present invention, the extension frame includes:

[0013] A first telescopic portion, slidably connected to the mounting frame; and

[0014] The second telescopic part is arranged on a side of the first telescopic part away from the mounting frame and is slidably connected to the first telescopic part.

[0015] According to some embodiments of the present invention, the first fixing member is rotatably connected to the pressing plate.

[0016] According to some embodiments of the present utility model, when the second fixing member abuts against the reducer, a plurality of mounting holes are provided on the top of the reducer, and the mounting holes are used for connection with the second fixing member;

[0017] When the second fixing member is in contact with the mounting frame, a plurality of mounting holes are provided on the top of the mounting frame, and the mounting holes are used for connection with the second fixing member.

[0018] According to some embodiments of the utility model, the mounting frame includes a mounting portion and a plurality of limiting portions connected to the top of the mounting portion, the mounting portion is connected to the extension frame, and the plurality of limiting portions are arranged at intervals along the circumference of the reducer to limit the reducer in the radial direction.

[0019] To achieve the above-mentioned purpose, a second aspect of an embodiment of the utility model provides a fixing device for fixing a reducer, the fixing device comprising:

[0020] A fixed base for a speed reducer as proposed in the first aspect of the embodiments of the present utility model; and

[0021] A shaft locking assembly for connecting to the turning shaft of the speed reducer and circumferentially locking the turning shaft of the speed reducer.

[0022] According to some embodiments of the present utility model, the shaft locking assembly includes a bracket and a shaft locking column. An installation space for installing part of the turning shaft is formed on the bracket to restrict the rotation of the turning shaft. The shaft locking column is used to axially pass through the bracket along the turning shaft and be inserted into the turning shaft, so that the bracket is connected to the turning shaft.

[0023] According to some embodiments of the present utility model, the bracket includes a mounting plate and two limiting plates arranged oppositely. The two limiting plates are arranged on opposite sides of the turning shaft. The mounting plate is connected to the same side of the two limiting plates and encloses to form the installation space. The shaft locking column passes through the mounting plate and is inserted into the turning shaft.

[0024] The fixed base and the fixing device for a speed reducer provided by the embodiments of the present utility model have at least the following effects compared with the prior art: By providing fixing components arranged at circumferential intervals and setting the fixing components as pressing plates and first fixing parts, the pressing plates are connected to the mounting frame through the first fixing parts to fix the pressing plates, so that the pressing plates can abut the speed reducer against the mounting frame, and the speed reducer can be stably fixed along the circumference of the speed reducer. After the speed reducer is fixed, through the extension frame on the horizontal side of the mounting frame, maintenance personnel can apply a downward calibration force to the speed reducer through a torque application tool (such as a torque wrench or an electric wrench). The extension frame can abut against the ground, and the ground provides an upward supporting force for the extension frame, so that the force relationship between the base and the torque application tool is similar to the force relationship between the two clamping arms of a clamp grip, thereby ensuring the stability of the speed reducer during the process of calibrating the slip torque. The embodiments of the present utility model can fix the speed reducer through the fixed base and fix the speed reducer during the process of calibrating the slip torque, saving manpower and improving the efficiency of calibrating the slip torque. In addition, the fixed base provided by the embodiments of the present utility model can also fix the speed reducer during other maintenance processes to achieve the technical effects of saving manpower and improving the maintenance efficiency.

[0025] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an overall structural schematic diagram of the fixing device provided by the embodiments of the present utility model;

[0027] Figure 2It is a schematic structural diagram of a fixing component provided by an embodiment of the present utility model;

[0028] Figure 3 It is another schematic structural diagram of a fixing device provided by an embodiment of the present utility model;

[0029] Figure 4 It is a schematic structural diagram of a lock shaft component provided by an embodiment of the present utility model.

[0030] Reference numerals: speed reducer 200, input end flange 210, worm 220, fixed base 300, base 310, mounting bracket 311, mounting hole 3111, mounting portion 3112, limiting portion 3113, extension bracket 312, first telescopic portion 3121, second telescopic portion 3122, fixing component 320, pressing plate 321, first fixing member 322, second fixing member 323, lock shaft component 400, bracket 410, limiting plate 411, mounting plate 412, lock shaft column 420, cylindrical through hole 421, keyway 422, reinforcing ring 500. Detailed Description of the Embodiment

[0031] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0033] In the description of the present utility model, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0034] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0035] In the description of the present utility model, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] Before further elaborating on the embodiments of the present utility model, the nouns and terms involved in the embodiments of the present utility model are described. The nouns and terms involved in the embodiments of the present utility model are applicable to the following explanations:

[0037] Gravel filter: The gravel filter is a filter net installed at the seawater inlet of the condenser. It functions to prevent gravel, debris, and marine organisms from entering the condenser water chamber and the titanium tubes of the condenser, thereby avoiding blockage of the titanium tubes of the condenser by foreign matters. The gravel filter can continuously monitor the pressure difference on both sides of the filter net. When the pressure difference on both sides of the filter net reaches a predetermined value, the backwashing device is activated to backwash the filter net. During backwashing, the backwashing drain valve is opened, and the backwashing rotor rotates within the entire filter net. The cooling water used for flushing flows reversely due to the pressure difference, thereby washing away the foreign matters accumulated on the filter net and discharging them through the backwashing pipe to achieve the purpose of cleaning the filter net.

[0038] Worm and worm gear reducer: The worm and worm gear reducer converts the motor speed and torque through the cooperation of the worm gear and the worm. The output torque of the motor multiplied by the reduction ratio gives the output torque of the worm and worm gear reducer. The worm and worm gear reducer transmits the output torque to the main shaft of the gravel filter through a universal joint and finally to the backwashing rotor of the gravel filter, enabling the backwashing rotor to rotate and perform backwashing. The output torque of the worm and worm gear reducer should be within the rated torque range of the reducer.

[0039] Slip torque: Slip refers to the abnormal fit between the worm and the worm gear. When the torque applied to the worm exceeds the maximum torque that can be transmitted by the frictional force between the worm and the worm gear, slip will occur. Therefore, it is necessary to set a maximum torque value that the speed reducer can transmit, and this maximum torque value is the slip torque. If the output torque of the worm is greater than the rated value of the slip torque, slip occurs at the meshing point of the worm gear and the worm, blocking the transmission of torque. When the slip torque is too large, the fit between the worm gear and the worm is too tight. If the motor continues to transmit torque greater than the rated value to the gravel filter through the worm gear speed reducer at this time, the gravel filter will continue to operate because it cannot trigger the slip signal, resulting in equipment damage; when the slip torque is too small, the meshing between the worm gear and the worm is not in place, and the motor cannot transmit the input torque to the gravel filter through the worm gear speed reducer. At this time, the worm gear speed reducer will make abnormal noises or vibrate, and eventually cannot operate normally.

[0040] Barring shaft: The barring shaft ensures that maintenance personnel can rotate the worm without relying on motor drive for checking the slip torque of the speed reducer. During installation or maintenance, it is necessary to restrict the rotation of the barring shaft, apply a checking torque to it with a torque wrench, and then drive the entire speed reducer to rotate slowly. During this process, adjust the slip torque by observing the rotation and sound of the wrench.

[0041] Due to the long-term operation of the gravel filter, the worm gear and the worm of the speed reducer are meshed for a long time, and wear is likely to occur at the meshing point, resulting in an offset of the slip torque value. Therefore, in order to ensure the normal operation of the gravel filter, it is necessary to regularly check and adjust the slip torque of the worm gear speed reducer.

[0042] During the process of checking the slip torque of the worm gear speed reducer, it is necessary to fix the body of the worm gear speed reducer and the barring shaft of the worm gear speed reducer. In related technologies, the speed reducer needs to be fixed on a bracket, and maintenance personnel need to step on the input flange at the bottom of the worm gear speed reducer by themselves to prevent the speed reducer from tipping over when the applied torque is too large. And it is necessary to use a crank and a sling to fix the barring shaft. At the same time, adjust the fit between the worm gear and the worm by adjusting the hexagon bolts on the speed reducer (tightening the hexagon bolts increases the slip torque, loosening the hexagon bolts decreases the slip torque), and use a torque wrench with a special socket to check the slip torque of the speed reducer. Therefore, the adjustment of the slip torque of a single speed reducer requires the cooperation of multiple people, consuming a lot of manpower, taking a long time for checking, and having low checking efficiency.

[0043] Based on this, the embodiments of the present utility model provide a fixed base and a fixing device for a speed reducer 200. Specifically, the speed reducer 200 can be a worm and worm gear speed reducer or other types of speed reducers, which is not limited herein. Here, the worm and worm gear speed reducer is used to illustrate the fixed base 300 and the fixing device provided by the embodiments of the present utility model, hereinafter referred to as the speed reducer. During the process of verifying the slipping torque of the speed reducer, the fixed base 300 and the fixing device can play the role of fixing the speed reducer and locking the turning shaft, so as to achieve the purpose of saving manpower and improving the efficiency of slipping torque verification.

[0044] Before introducing the fixed base 300 and the fixing device provided by the embodiments of the present utility model, the verification of the slipping torque can be introduced first. Verifying the slipping torque can protect the speed reducer and the gravel filter to extend their service life. Setting a suitable and accurate rated value of the slipping torque is very important for the normal transmission of the torque output by the motor of the speed reducer to the gravel filter. If the rated value of the slipping torque is set improperly, it may damage the speed reducer and the gravel filter. For example, if the worm and worm gear of the speed reducer are too tightly matched, the slipping torque should exceed the rated value at this time, and further a slipping signal will be triggered to stop the operation of the speed reducer, playing a protective role for the speed reducer and the gravel filter.

[0045] If the rated value of the slipping torque of the speed reducer is not verified, the rated value of the slipping torque may change, for example, the rated value of the slipping torque increases. At this time, if the worm and worm gear are too tightly matched, but the slipping torque does not exceed the rated value, the speed reducer continues to operate, and the slipping signal cannot be triggered to stop the operation of the speed reducer, which may lead to the damage of the speed reducer.

[0046] When it is just put into use, the factory sets an accurate rated value of the slipping torque for the speed reducer. However, as the use time increases and the speed reducer equipment becomes old, the rated value of the slipping torque will also change. Therefore, in order to adjust the slipping torque, it is necessary to re-verify the slipping torque of the speed reducer.

[0047] In the related art, when adjusting the slipping torque of the speed reducer, the speed reducer needs to be tied and fixed on the bracket. At least two maintenance personnel are required to step on the input flange at the bottom of the speed reducer with force to prevent the applied torque from being too large and causing the speed reducer to turn over. In addition, one maintenance personnel is required to use a crank and a sling to fix the turning shaft to prevent the turning shaft from rotating during the process of verifying the slipping torque. At the same time, by adjusting the hexagon bolts on the gearbox of the speed reducer, the matching condition of the worm and the worm gear is adjusted (specifically, tightening the hexagon bolts, the slipping torque increases, loosening the hexagon bolts, the slipping torque decreases). Finally, one maintenance personnel is required to use a torque wrench and a special socket to verify the slipping torque of the output shaft of the speed reducer motor.

[0048] Therefore, in the related art, adjusting the slipping torque of a single speed reducer requires the cooperation of 4 people and takes 1 to 2 hours to complete. The entire adjustment process is time-consuming and laborious, and the efficiency of verifying the slipping torque is very low. Based on this, the embodiments of the present utility model provide a fixed base and a fixing device for a speed reducer, which can fix the speed reducer during the process of verifying the slipping torque to improve the efficiency of verifying the slipping torque. Next, the fixed base 300 and the fixing device provided by the embodiments of the present utility model will be introduced in detail.

[0049] Please refer to Figure 1 , Figure 1 FIG. is an overall structural schematic diagram of the fixing device provided by the embodiments of the present utility model. In some embodiments, the fixing device may include a fixed base 300 and a locking shaft assembly 400. Among them, the fixed base 300 is used to fix the speed reducer 200 to prevent the speed reducer 200 from tipping over during the verification process. During the actual verification process, the speed reducer 200 can be pushed into the fixed base 300, and when the verification is completed, the speed reducer can be pushed out of the fixed base 300, so that the disassembly of the speed reducer can be completed, and the verification of the slipping torque of different speed reducers can be quickly realized.

[0050] Furthermore, the locking shaft assembly 400 can be directly inserted into the barring shaft to effectively fix the barring shaft and avoid deviation in the adjustment of the slipping torque caused by the rotation of the barring shaft. During the actual maintenance process, in order to improve efficiency and reduce the labor burden, an electric torque wrench is usually used to verify the slipping torque. At this time, the torque applied by the electric torque wrench may be too large, resulting in elastic deformation of the output flange of the speed reducer. To avoid damaging the speed reducer during the adjustment of the slipping torque, a reinforcing ring can also be provided. The reinforcing ring is used to fix the output flange of the speed reducer to prevent the output flange from deforming during the application of the verification torque.

[0051] In some embodiments, please refer to Figure 1 , specifically, the fixed base 300 includes a base 310 and at least two fixing components 320. The base 310 includes a mounting frame 311 and an extension frame 312 connected to one side of the mounting frame 311 in the horizontal direction. The speed reducer 200 includes an input flange 210. The length and width of the mounting frame 311 can be both greater than the diameter of the input flange 210 of the speed reducer to ensure that the bottom surface of the input flange 210 is in full contact with the upper surface of the mounting frame 311 and provide sufficient space for accommodating the input flange 210.

[0052] Further, the extension frame 312 is in the same horizontal plane as the mounting frame 311. The length of the extension frame 312 is variable, and the length of the extension frame 312 is equal to the length of the force arm applying the torque, that is, the perpendicular distance from the center of the speed reducer to the straight line where the torque application position is located. According to the slip torques of different values, the length of the extension frame 312 can be adjusted accordingly to prevent the speed reducer 200 from tipping over and maintain the balance of the speed reducer 200 during the calibration process. For example, when increasing the applied calibration torque, by increasing the length of the extension frame 312, the effect of lengthening the force arm can be achieved, preventing the speed reducer 200 from tipping over when the applied torque increases. In addition, the extension frame 312 lengthens the force arm of the applied torque, making the force arm of the applied torque greater than the resistance arm, and reducing the applied force through a labor-saving lever structure, achieving the effect of saving labor.

[0053] In some embodiments, when the motor is designed to be reversible, when calibrating the slip torque, it is also necessary to calibrate the slip torques in both the forward and reverse directions of the speed reducer 200. When calibrating the slip torque in the forward direction, the torque wrench applies a torque downward, and the mounting frame 311 provides an upward supporting force. The tool applying the calibration torque (such as a torque wrench or an electric wrench) and the base 310 form a structure similar to a clamp-type dynamometer, forming a clamping force to prevent the speed reducer 200 from tipping over when the torque is applied; when calibrating the slip torque in the reverse direction, since the installation space is large enough, the speed reducer 200 can be rotated 180 degrees, and the calibration torque is still applied on the same side as when calibrating the slip torque in the forward direction, so that the calibration of the reverse slip torque of the speed reducer 200 can be completed without arranging the extension frame 312 on the other side, saving the manufacturing cost.

[0054] Further, at least two fixing components 320 arranged at intervals along the circumferential direction of the speed reducer 200 can be provided. Among them, the fixing component 320 includes a pressing plate 321 and a first fixing member 322. The pressing plate 321 is arranged on the mounting frame 311, and an installation space for accommodating the input flange 210 of the speed reducer 200 is defined between the pressing plate 321 and the mounting frame 311. The input flange 210 of the speed reducer 200 can be pushed into the installation space to fix the speed reducer 200, or the input flange 210 of the speed reducer 200 can be removed from the installation space along the direction of the extension frame 312 to disassemble the speed reducer 200. Based on this, the speed reducer 200 can be replaced quickly, saving the time for calibrating the slip torques of multiple speed reducers 200 and improving the calibration efficiency.

[0055] Specifically, in this embodiment, refer to Figure 2 , Figure 2This is a schematic structural diagram of the fixing component 320 provided by an embodiment of the present utility model. The figure shows a setting manner of a pressing plate 321 and a first fixing member 322. Among them, each pressing plate 321 is connected to at least one first fixing member 322. The first fixing member 322 passes through the pressing plate 321 vertically, and the first fixing member 322 contacts the upper surface of the mounting frame 311 and is used to connect the pressing plate 321 to the mounting frame 311. In this way, the pressing plate 321 can abut the speed reducer 200 against the mounting frame 311. For the setting manner of the pressing plate 321 and the first fixing member 322, there can be settings as shown in Figure 1 and Figure 2 shown in the figure.

[0056] In some embodiments, as shown in Figure 2 the figure, a pressing plate 321 can be installed on each side of the top of the mounting frame 311. The length of the pressing plate 321 is not greater than the length of the mounting frame 311, and the height of the pressing plate 321 is slightly greater than the thickness of the input flange 210, so that the installation space can completely accommodate the speed reducer 200. Among them, the top refers to the upper side of the mounting frame 311.

[0057] In this embodiment, a pressing plate 321 is provided on each side of the mounting frame 311. The same number of first fixing members 322 are passed through the pressing plate 321 on each side. For example, one or two first fixing members 322 can be provided at one end of each pressing plate 321. The first fixing members 322 provided on each side of the pressing plate 321 can be on the same straight line and are all used to connect the pressing plate 321 to the mounting frame 311. The installation positions of the first fixing members 322 on both sides are symmetric with each other to ensure that the speed reducer 200 is evenly stressed and remains stable during the verification process.

[0058] When the gap between the lower surface of the pressing plate 321 and the upper surface of the mounting frame 311 is large, the first fixing member 322 can be screwed towards the direction close to the mounting frame 311 by an external operating tool. Under the action of the first fixing member 322, the pressing plate 321 also moves towards the direction close to the mounting frame 311, reducing the gap between the mounting frame 311 and the pressing plate 321, so as to reduce the installation space defined by the two, thereby realizing the fixation of the speed reducer 200 with different sizes of input flanges 210. No restrictions are imposed on the external operating tool here. During the process of pushing in or disassembling the speed reducer 200, the first fixing member 322 can be screwed towards the direction away from the mounting frame 311 by an external operating tool to increase the installation space, facilitating the pushing in of the speed reducer 200 or the disassembly from the base 310.

[0059] It can be understood that the number of the first fixing members 322 connected to each pressing plate 321 can be set according to actual needs, and the position where the first fixing members 322 are arranged on the pressing plate 321 can also be adjusted according to actual needs. The installation method of the pressing plate 321 and the first fixing members 322 can also be selected according to actual requirements.

[0060] In some other embodiments, as Figure 1 shown, another setting method of the pressing plate 321 and the first fixing members 322 is provided. Specifically, the pressing plates 321 are also arranged at intervals along the circumferential direction of the speed reducer 200. Taking the input end flange 210 as the reference circle, the first fixing members 322 are arranged at intervals of ninety degrees along the circumferential direction of the speed reducer 200. When fixing the speed reducer 200, the first fixing members 322 are screwed in the direction towards the mounting frame 311, so as to drive the pressing plate 321 to move in the direction towards the mounting frame 311, reducing the distance between the pressing plate 321 and the mounting frame 311. The pressing plate 321 presses the input end flange 210. After the pressing plate 321 presses and covers the input end flange 210, the first fixing members 322 lock the position of the pressing plate 321, thereby realizing the fixing of the input end flange 210.

[0061] When it is necessary to disassemble the input end flange 210 for replacing the speed reducer 200, the first fixing members 322 are screwed in the direction away from the mounting frame 311, so as to release the pressing of the pressing plate 321 on the input end flange 210, increasing the installation space defined by the pressing plate 321 and the mounting frame 311, so that the speed reducer 200 can be removed from the installation space, and the disassembly and replacement of the speed reducer 200 can be easily realized.

[0062] The number of the first fixing members 322 arranged on each pressing plate 321 can be flexibly selected. The number of the first fixing members 322 arranged on all the pressing plates 321 should be kept equal. The arranged first fixing members 322 are arranged evenly or symmetrically along the circumferential direction of the speed reducer 200 (or the input end flange 210) to ensure the balanced force of the speed reducer 200 and prevent it from tipping over.

[0063] It can be understood that the setting methods of the pressing plate 321 and the first fixing members 322 provided by the embodiments of the present invention can both realize the fixing of the speed reducer 200 and prevent the speed reducer 200 from tipping over when the applied torque is too large. In addition, it can also save manpower, facilitate the disassembly of the speed reducer 200, reduce the time for slip torque calibration of multiple speed reducers 200, and finally improve the efficiency of slip torque calibration.

[0064] In some embodiments, please refer to Figure 1 or Figure 2, the fixing component 320 may further include a second fixing member 323. The second fixing member 323 is used to strengthen the fixing of the speed reducer 200. One end of the second fixing member 323 passes through the pressing plate 321. The second fixing member 323 may be rotatably connected to the pressing plate 321 and is used to abut against the speed reducer 200 or the mounting bracket 311. Specifically, the second fixing member 323 may abut against the upper surface of the input flange 210 of the speed reducer 200, or may also abut against the upper surface of the mounting bracket 311. Based on the above-described arrangement of the pressing plate 321 and the first fixing member 322, there may also be different embodiments for the arrangement of the pressing plate 321, the first fixing member 322, and the second fixing member 323. In some embodiments, as Figure 1 shown, both the first fixing member 322 and the second fixing member 323 may abut against the mounting bracket 311 to connect the pressing plate 321 to the mounting bracket 311. The second fixing member 323 is located on the side of the first fixing member 322 closer to the installation space. One second fixing member 323 is passed through each pressing plate 321.

[0065] In other embodiments, as Figure 2 shown, the first fixing member 322 is used to abut against the mounting bracket 311, and the second fixing member 323 is used to abut against the upper surface of the input flange 210 of the speed reducer 200. One second fixing member 323 is provided at each end of the pressing plate 321 on each side.

[0066] The second fixing member 323 provided in the embodiment of the present utility model is used to further fix the speed reducer 200 on the basis of the base 310, the pressing plate 321, and the first fixing member 322. The above-mentioned two embodiments are both feasible in actual use and are not limited herein.

[0067] In some embodiments, the first fixing member 322 may be rotatably connected to the pressing plate 321. For example, threads may be provided on the inner wall of the pressing plate 321, and threads that are mutually engaged with the threads of the pressing plate 321 may also be correspondingly provided on the side wall of each first fixing member 322, so that the pressing plate 321 and the first fixing member 322 can be rotatably connected by the threads. The rotatable connection between the first fixing member 322 and the pressing plate 321 enables the first fixing member 322 to avoid the speed reducer 200 by rotation. After the speed reducer 200 is installed in the installation space, the first fixing member 322 is rotated towards the speed reducer 200 to achieve the fixing of the speed reducer 200. By rotatably connecting the first fixing member 322 and the pressing plate 321, the operation of installing and disassembling the speed reducer 200 can be simplified, saving manpower and time.

[0068] In some embodiments, please refer to Figure 1The extension frame 312 is movably connected to the mounting frame 311 along one side in the horizontal direction. The extension frame 312 includes three extension rods (not shown in the figure), and the horizontal direction is perpendicular to the axis of the worm 220 of the reducer 200. It can be understood that the number of extension rods in the extension frame 312 can be two or three, or more, and there is no limitation here. The extension frame 312 can move in the horizontal direction toward the direction close to the reducer 200 to shorten the force arm of the applied torque, and can also move in the horizontal direction toward the direction away from the reducer 200. The extension frame 312 can adjust the length of the force arm according to the applied torque to prevent the reducer 200 from tipping over during the torque application process.

[0069] In another embodiment, see Figure 3 , Figure 3 It is another structural schematic diagram of the fixing device provided in an embodiment of the utility model. Figure 3 , another configuration of the extension frame 312 is shown, specifically, the extension frame 312 includes a first telescopic portion 3121 and a second telescopic portion 3122. It is understandable that the number of extension rods provided in the first telescopic portion 3121 and the second telescopic portion 3122 can also be adjusted according to actual needs, and no limitation is made here.

[0070] In this embodiment, the first telescopic part 3121 is provided with three extension rods, and the first telescopic part 3121 can be slidably connected with the mounting frame 311. The second telescopic part 3122 is provided with two extension rods, and the second telescopic part 3122 is provided on the side of the first telescopic part 3121 away from the mounting frame 311. The second telescopic part 3122 can be slidably connected with the first telescopic part 3121 in the horizontal direction, and the horizontal direction is perpendicular to the axis of the worm 220 of the reducer 200. Among them, the length of the first telescopic part 3121 is variable, and the length of the first telescopic part 3121 can be reduced to a shortest fixed length, which is the minimum arm length that the first telescopic part 3121 can provide for the extension frame 312. The length of the first telescopic part 3121 and the length of the second telescopic part 3122 can be adjusted to change the overall length of the extension frame 312, thereby adjusting the arm length of the applied torque.

[0071] The setting method of the extension frame 312 provided by the utility model can be selected according to actual needs. The length of the extension frame 312 can be adjusted accordingly according to different values of the slip torque to achieve a change in the length of the lever arm, thereby preventing the reducer 200 from tipping over during the process of verifying the slip torque, while achieving a technical effect of saving effort.

[0072] In some embodiments, please refer to Figure 2, the second fixing member 323 is located on the side of the first fixing member 322 facing away from the installation space. When the second fixing member 323 abuts against the speed reducer 200, one end of the second fixing member 323 can be connected to the speed reducer 200 through the mounting hole 3111, and the other end can pass through the pressing plate 321. A plurality of mounting holes 3111 can be provided on the top of the speed reducer 200. Specifically, the top of the speed reducer 200 can be the upper surface of the input flange 210, and a plurality of mounting holes 3111 can be provided on the upper surface of the input flange 210. The inner diameter of the mounting hole 3111 matches the diameter of the second fixing member 323, and the depth of the mounting hole 3111 is large enough to reserve sufficient moving space for the second fixing member 323.

[0073] Further, the second fixing member 323 can be connected to the mounting hole 3111 so that the second fixing member 323 abuts against the speed reducer 200, improving the stability of fixing the pressing plate 321 and further fixing the speed reducer 200. The position of the second fixing member 323 can be adjusted. Thus, the position of the mounting hole 3111 provided on the speed reducer 200 can be adjusted according to the position of the second fixing member 323.

[0074] When installing the speed reducer 200, the first fixing member 322 and the second fixing member 323 can be rotated away from the speed reducer 200 to avoid the input flange 210 of the speed reducer 200. After the input flange 210 is placed on the mounting frame 311, the first fixing member 322 and the second fixing member 323 are rotated towards the mounting frame 311, and the first fixing member 322 and the second fixing member 323 are screwed towards the mounting frame 311 to press the pressing plate 321 against the input flange 210. In this embodiment, the fixing degree of the speed reducer 200 can be adjusted by adjusting the first fixing member 322 and the second fixing member 323. By using an external operating tool to simultaneously screw the first fixing member 322 and the second fixing member 323 in the vertical direction away from the mounting frame 311, the gap between the upper surface of the input flange 210 and the lower surface of the pressing plate 321 is increased, so that the speed reducer 200 can be easily disassembled; by using an external operating tool to simultaneously screw the first fixing member 322 and the second fixing member 323 in the vertical direction towards the mounting frame 311, the gap between the upper surface of the input flange 210 and the lower surface of the pressing plate 321 is reduced, so that the speed reducer 200 can be fixed.

[0075] In other embodiments, such as Figure 1As shown, when the second fixing member 323 abuts against the mounting bracket 311, a plurality of mounting holes 3111 can be provided at the top of the mounting bracket 311, and the mounting holes 3111 are used for connecting with the second fixing member 323. In this embodiment, the connection relationship between the mounting holes 3111 and the second fixing member 323 is similar to that in the foregoing embodiment, and will not be elaborated here.

[0076] In some embodiments, such as Figure 1 or Figure 2 the fixed base 300 shown in, the mounting bracket 311 includes a mounting portion 3112 and a plurality of limiting portions 3113 connected to the top of the mounting portion 3112, and the number of the limiting portions 3113 is not limited. Among them, the mounting portion 3112 is connected to the extension bracket 312. The limiting portion 3113 has a certain height, and the height size can be set according to actual needs. The limiting portion 3113 can be provided in the area where the pressing plate 321 is not provided on the mounting portion 3112, or can be provided in the mounting space below the pressing plate 321. At this time, the height of the limiting portion 3113 is not greater than the height of the pressing plate 321, and the peripheral side of the input flange 210 can abut against one side of the limiting portion 3113, so as to better fix the speed reducer 200.

[0077] Further, the plurality of limiting portions 3113 are distributed at intervals along the circumference and are used for radially limiting the speed reducer 200. Specifically, it is to radially limit the input flange 210 of the speed reducer 200 to Figure 1 take as an example, four limiting portions 3113 are provided at the top of the mounting portion 3112, and each limiting portion 3113 is installed at the center of each side of the mounting portion 3112; take Figure 2 as an example, two limiting portions 3113 are provided at the top of the mounting portion 3112, and each limiting portion 3113 is arranged at the center of two sides of the mounting portion 3112 along the direction perpendicular to the worm 220. The limiting portion 3113 can or cannot be provided below the pressing plate 321, and can be selected according to actual needs. Among them, the top refers to the upper part of the mounting portion 3112. By providing the limiting portion 3113 on the fixed base 300, the input flange 210 of the speed reducer 200 can be radially limited to enhance the fixing effect of the fixed base 300.

[0078] In some embodiments, the fixing device provided by the present utility model includes the foregoing fixed base 300 and further includes a lock shaft assembly 400. When checking the slip torque, it is necessary to limit the rotation of the worm shaft. After limiting the rotation of the worm shaft at the motor end, it is not convenient to fix the speed reducer 200. Therefore, generally, the rotation of the worm shaft of the speed reducer 200 is limited by the turning shaft at the non-motor end. In order to effectively fix the turning shaft, a lock shaft assembly 400 is provided in this embodiment.

[0079] Specifically, the barring shaft (not shown in the figure) includes a cylindrical shaft body. A flat key is provided on one side of the shaft body. The shaft locking assembly 400 is used to connect with the barring shaft of the speed reducer 200. The specific connection method can be a key connection, and it locks the barring shaft of the speed reducer 200 circumferentially. During the verification process of the slip torque, the shaft locking assembly 400 can be inserted from above the barring shaft to fix the barring shaft. The shaft locking assembly 400 can effectively lock the barring shaft, thereby avoiding deviation in the adjustment of the slip torque caused by the rotation of the barring shaft.

[0080] In some embodiments, please refer to Figure 4 , Figure 4 which is a schematic structural diagram of the shaft locking assembly 400 provided by an embodiment of the present invention. The shaft locking assembly 400 includes a bracket 410 and a shaft locking column 420. An installation space for installing the barring shaft is formed on the bracket 410 to restrict the rotation of the barring shaft. The shaft locking column 420 is used to axially pass through the bracket 410 along the barring shaft and plug into the barring shaft, so that the bracket 410 is connected to the barring shaft.

[0081] Specifically, the bracket 410 includes two limiting plates 411 and a mounting plate 412 arranged oppositely. Among them, the two limiting plates 411 are used to abut against the opposite sides of the barring shaft of the speed reducer 200 to ensure that the shaft locking assembly 400 can be stably placed on the speed reducer 200. The mounting plate 412 can be connected to one side of the two limiting plates 411 to enclose an installation space for installing the barring shaft. It can be understood that the length of the limiting plate 411 is greater than the length of the shaft locking column 420. The shaft locking column 420 is located between the two limiting plates 411. The shaft locking column 420 passes through the mounting plate 412 and plugs into the barring shaft to fix the barring shaft. A cylindrical through hole 421 is provided in the shaft locking column 420, and the diameter of the cylindrical through hole 421 is equal to the diameter of the barring shaft. Further, a keyway 422 is provided on the inner wall of the cylindrical through hole 421. The keyway 422 is used to accommodate the flat key on the side wall of the barring shaft. The shaft locking column 420 is used to key-connect with the barring shaft to restrict the rotation of the barring shaft.

[0082] Further, a fixing tool (not shown in the figure) can be used to fix the key connection structure between the shaft locking assembly 400 and the barring shaft. The fixing tool can be a screw or a bolt, which is not limited here. The number of fixing tools can also be set according to actual needs. In this embodiment, the key connection structure formed between the shaft locking assembly 400 and the barring shaft is fixed by one or four screws. Those skilled in the art can understand that there can be other setting methods, which are not limited here.

[0083] In some embodiments, please refer to Figure 1, the fixing device for the speed reducer 200 provided by the present utility model further includes a reinforcing ring 500, and the reinforcing ring 500 has a through hole (not shown in the figure). When calibrating the slip torque of the speed reducer 200 by an electric torque wrench, the reinforcing ring 500 is used to sleeved on the outer periphery of the output flange of the speed reducer 200 to prevent the output flange of the speed reducer 200 from deforming due to the excessive torque applied by the electric torque wrench.

[0084] The fixing device provided by the present utility model includes a fixing base 300. The fixing base 300 includes a base 310 which is a base for placing the speed reducer 200. The base 310 includes a mounting frame 311. Maintenance personnel can place the speed reducer 200 on the mounting frame 311, and the mounting frame 311 is used to support the speed reducer 200. The base 310 further includes an extension frame 312 connected to one side of the mounting frame 311 in the horizontal direction. When calibrating the slip torque, maintenance personnel can apply a calibration force in the extending direction of the extension frame 312 to calibrate the slip torque.

[0085] Specifically, when calibrating the forward slip torque, maintenance personnel can apply a downward calibration force to the speed reducer 200 through a torque application tool (such as a torque wrench or an electric wrench). The extension frame 312 can abut against the ground, and the ground provides an upward supporting force for the extension frame 312, so that the force relationship between the base 310 and the torque application tool is similar to the force relationship between the two jaws of a clamp gripper, thereby ensuring the stability of the speed reducer 200 during the calibration of the slip torque; when calibrating the reverse slip torque, the speed reducer 200 can be rotated 180° in the installation space to further calibrate the reverse slip torque of the speed reducer 200.

[0086] In order to better fix the speed reducer 200, the embodiments of the present disclosure further provide at least two fixing components 320 to further fix the speed reducer 200. Among them, the fixing components 320 are arranged at intervals along the circumference of the speed reducer 200, and can stably fix the speed reducer 200 along the circumference of the speed reducer 200.

[0087] The fixing component 320 includes a pressing plate 321 and a first fixing member 322. The pressing plate 321 is arranged on the mounting frame 311. The pressing plate 321 and the mounting frame 311 jointly define an installation space for accommodating the speed reducer 200. Maintenance personnel can install the speed reducer 200 into the installation space from the horizontal direction, and fix the installation position of the speed reducer 200 through the pressing plate 321 and the mounting frame 311 to prevent the speed reducer 200 from tipping over during the calibration of the slip torque.

[0088] Furthermore, the fixing component 320 further includes a first fixing member 322. One end of the first fixing member 322 passes through the pressing plate 321, and the pressing plate 321 is connected to the mounting bracket 311 through the first fixing member 322 to fix the pressing plate 321, so that the pressing plate 321 can abut the speed reducer 200 against the mounting bracket 311, realizing further fixation of the speed reducer 200.

[0089] In the embodiment of the present utility model, the speed reducer 200 can be fixed by the fixing base 300, and the speed reducer 200 is fixed during the process of checking the slip torque, saving manpower and improving the efficiency of slip torque checking. In addition, the fixing base 300 provided in the embodiment of the present utility model can also fix the speed reducer 200 during other maintenance processes, so as to achieve the technical effect of saving manpower and improving the maintenance efficiency. The fixing device provided by the present utility model further includes a locking shaft assembly 400. The locking shaft assembly 400 can effectively lock the barring shaft, avoid deviation in the adjustment of the slip torque caused by the rotation of the barring shaft, and at the same time save manpower and improve the efficiency of slip torque checking.

[0090] The fixing device provided by the present utility model may further include a reinforcing ring 500. When checking with an electric torque wrench, the reinforcing ring 500 can prevent the output flange of the speed reducer 200 from deforming due to excessive torque applied by the electric torque wrench.

[0091] Through the fixing device provided by the present utility model, the speed reducer 200 can be fixed to achieve the beneficial effect of quickly and safely adjusting the slip torque. Those skilled in the art can understand that the fixing device provided by the present utility model can be extended and applied to other similar devices in addition to being applied to the speed reducer 200, and no limitation is made here.

[0092] Taking the worm and worm gear speed reducer in a nuclear power plant as an example, the models of the gravel filters in each nuclear power base are basically the same. When maintaining the gravel filter, it is necessary to check the slip torque of the worm and worm gear speed reducer. Compared with the related art, adjusting the slip torque of a single speed reducer requires the cooperation of multiple people and takes one to two hours to complete. By using the fixing device provided by the present utility model, only one or two people are required to cooperate, and the slip torque adjustment of a single slip speed reducer can be completed within half an hour, greatly improving the maintenance efficiency, effectively shortening the maintenance period, and at the same time effectively saving manpower and maintenance costs.

[0093] The above has described the embodiments of the present utility model in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Various changes can be made without departing from the gist of the present utility model within the knowledge scope of those of ordinary skill in the art to which the present utility model pertains. In addition, the embodiments of the present utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A fixed base for fixing a speed reducer, characterized in that, include: A base, comprising a mounting frame and an extension frame connected to one side of the mounting frame in a horizontal direction, wherein the mounting frame is used to support the reducer; as well as At least two fixing components are arranged at intervals along the circumference of the reducer, and the fixing components include a pressure plate and a first fixing member. The pressure plate is arranged on the mounting frame and defines an installation space for accommodating the reducer between the pressure plate and the mounting frame. One end of the first fixing member passes through the pressure plate and is used to connect the pressure plate to the mounting frame so that the pressure plate abuts the reducer against the mounting frame.

2. The fixed base according to claim 1, wherein The fixing assembly also includes: A second fixing member, one end of which is passed through the pressing plate and is used to abut against the reducer or the mounting bracket.

3. The fixed base according to claim 2, wherein The extension frame is movably connected to the mounting frame along a horizontal direction.

4. The fixed base according to claim 3, characterized in that, The extension frame comprises: A first telescopic portion, slidably connected to the mounting frame; and The second telescopic part is arranged on a side of the first telescopic part away from the mounting frame and is slidably connected to the first telescopic part.

5. The fixed base according to any one of claims 1 to 4, characterized in that, The first fixing member is rotatably connected to the pressing plate.

6. The fixed base according to any one of claims 2 to 4, characterized in that When the second fixing member is in contact with the reducer, a plurality of mounting holes are provided on the top of the reducer, and the mounting holes are used for connection with the second fixing member; When the second fixing member is in contact with the mounting frame, a plurality of mounting holes are provided on the top of the mounting frame, and the mounting holes are used for connection with the second fixing member.

7. The fixed base according to any one of claims 1 to 4, characterized in that, The mounting frame includes a mounting portion and a plurality of limiting portions connected to the top of the mounting portion, the mounting portion is connected to the extension frame, and the plurality of limiting portions are arranged at intervals along the circumference of the reducer to limit the reducer in radial direction.

8. A fixing device for fixing a speed reducer, characterized in that, include: A fixed base for a reducer as claimed in any one of claims 1 to 7; as well as The shaft locking assembly is used to connect with the turntable shaft of the reducer and lock the turntable shaft of the reducer in the circumferential direction.

9. The fixing device according to claim 8, characterized in that, The locking shaft assembly includes a bracket and a locking shaft column. The bracket is formed with an installation space for installing part of the turning shaft to limit the rotation of the turning shaft. The locking shaft column is used to pass through the bracket along the axial direction of the turning shaft and be plugged into the turning shaft to connect the bracket with the turning shaft.

10. The fixing device according to claim 9, characterized in that, The bracket includes a mounting plate and two limit plates arranged opposite to each other. The two limit plates are arranged on opposite sides of the turning wheel shaft. The mounting plate is connected to the same side of the two limit plates and encloses the mounting space to form the mounting space. The locking shaft column passes through the mounting plate and is plugged into the turning wheel shaft.

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