Low-temperature environment gear structure of speed reducer

Abstract

The utility model provides a speed reducer low-temperature environment gear structure, which relates to the technical field of speed reducers, and comprises a speed reducer assembly body, an external heating structure is arranged on the outer side of the speed reducer assembly body, and the external heating structure is used for slowly and uniformly controlling the internal temperature. A rapid heating structure is installed on the back side wall of the external heating structure, a reflection structure is arranged on the front face of the external heating structure, and the reflection structure and the rapid heating structure are connected with the external heating structure through a plurality of connecting assemblies. The second heating rod in the mounting seat can be started through the PLC to quickly generate heat, so that the time for waiting for the equipment to be heated to a normal working temperature in a low-temperature environment is effectively shortened, the speed reducer can enter a normal working state more quickly, the response efficiency of the equipment is improved, and the service life of the equipment is prolonged. And the influence on the operation process of the whole equipment due to low-temperature slow starting is reduced.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a gear structure for speed reducers in low-temperature environments. Background Technology

[0002] A speed reducer is an independent component consisting of gear drives, worm drives, or gear-worm drives enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between a prime mover and a driven machine. It plays a role in matching speeds and transmitting torque between the prime mover and the driven machine or actuator, and its applications are extremely widespread in modern machinery.

[0003] According to a Chinese patent document (authorization announcement number: CN221880192U), a low-temperature environment gear structure for a reducer is disclosed, relating to the field of reducer gear technology, the invention includes a mounting box. The mounting box has an internal mounting groove, and a pair of first bearing seats are mounted on one side of the mounting groove. One end of a first drive shaft is connected to a worm gear. A second drive shaft is inserted into one side of the internal bearing seat, and a worm wheel is sleeved on the outside of the second drive shaft. The worm gear and the worm wheel mesh with each other. A first water tank and a second water tank are respectively mounted on the top two sides of the mounting box. Each of the first and second water tanks has a heat preservation mechanism on one side, including two pairs of connecting pipes. A heating box is installed between the first and second water tanks, and the heating box contains a heating mechanism, including heating pipes. This invention has a simple and reasonable structure, novel design, and simple and convenient operation. It effectively insulates the gearbox in cold weather, improves gear rotation efficiency, and has high practical value.

[0004] However, the above solution still has the following shortcomings when implemented:

[0005] This structure has certain limitations in practical applications. Its heating method is relatively concentrated, making it difficult to achieve slow and uniform control of the internal temperature of the reducer. Furthermore, it lacks more flexible and efficient means of rapid heating to cope with emergency low-temperature start-up situations.

[0006] Therefore, we propose a gear structure for a reducer in a low-temperature environment. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of the existing technology. The structure has certain limitations in practical applications. Its heating method is relatively concentrated, making it difficult to achieve slow and uniform control of the internal temperature of the reducer. Furthermore, it lacks more flexible and efficient rapid heating methods to cope with emergency low-temperature start-up situations.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A low-temperature environment gear structure for a speed reducer includes a main reducer body. An external heating structure is provided on the outer side of the main reducer body for slow and uniform temperature control. A rapid heating structure is installed on the back wall of the external heating structure. A reflective structure is provided on the front of the external heating structure. Both the reflective structure and the rapid heating structure are connected to the external heating structure via several connecting components. A second temperature sensor is also provided on the top of the main reducer body for real-time monitoring of the internal temperature of the external heating structure. A PLC controller is also installed on the right side wall of the external heating structure for controlling the external heating structure, the rapid heating structure, and the main reducer body.

[0010] As a preferred embodiment of this utility model, the external heating structure includes an insulated outer shell, a water storage cavity is formed in the inner wall of the insulated outer shell, a heating shell is formed on the top of the insulated outer shell, a heating cavity is formed inside the heating shell, a plurality of first heating rods are formed inside the heating cavity, a water inlet is formed on the top of the heating shell, a cap is formed on the top of the water inlet, and a plurality of first temperature sensors are formed inside the water storage cavity.

[0011] As a preferred embodiment of this utility model, the heating chamber of the heating shell is connected to the water storage chamber of the heat preservation shell, the PLC controller can control the opening and heating power of several first heating rods, the first temperature sensor is used to detect the temperature of the water in the water storage chamber and is electrically connected to the PLC controller, and the cap is threadedly connected to the water inlet.

[0012] As a preferred embodiment of this utility model, the rapid heating structure includes a mounting base, and the mounting base is provided with a plurality of second heating rods. The plurality of second heating rods are electrically connected to the PLC controller, and the PLC controller is used to control the activation and power of the plurality of second heating rods.

[0013] As a preferred embodiment of this utility model, the reflective structure includes a mounting plate, on the inner wall of the mounting plate is an aluminum foil reflector, and the mounting plate and the aluminum foil reflector are fixedly connected.

[0014] As a preferred embodiment of this utility model, the second heating rod and the aluminum foil reflector are used in conjunction. When the second heating rod is turned on, the aluminum foil reflector will reflect the heat radiation generated by the second heating rod, thereby accelerating the heating.

[0015] As a preferred embodiment of this utility model, the connecting component includes a fixing member, the surface of which is provided with a plurality of fixing holes, a connecting member is provided at the connection point of the fixing member, and a plurality of fixing bolts are provided on the connecting member.

[0016] As a preferred embodiment of this utility model, the fixing member is installed on the heat insulation shell, the connecting member is installed on the mounting plate and the mounting base, and the fixing bolt passes through the connecting member and the fixing hole to connect them.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, when encountering situations such as emergency low-temperature start-up, the second heating rod inside the mounting base can be activated through the PLC controller to quickly generate heat, effectively shortening the time for the equipment to heat up to the normal operating temperature in a low-temperature environment. This allows the reducer to enter the normal operating state more quickly, improving the equipment's response efficiency and reducing the impact of slow low-temperature start-up on the entire equipment operation process.

[0019] The aluminum foil reflector in the reflective structure works in conjunction with the rapid heating structure. When the second heating rod is turned on and generates heat radiation, the aluminum foil reflector can reflect the heat radiation, so that more heat is concentrated in the area that needs to be heated, reducing heat loss and improving heat utilization efficiency. While further accelerating the heating speed, it can also reduce energy consumption to a certain extent. From the perspective of energy saving and efficient use of energy, it optimizes the heating and heat preservation process in the low-temperature environment.

[0020] By utilizing the water storage chamber and the first heating rod in the external heating structure, the excellent heat transfer properties of water can be used to achieve slow and uniform temperature control of the reducer body. This allows for heat preservation after the rapid heating structure has finished heating. Furthermore, the external design has the advantages of lower design cost and eliminates concerns about leakage causing water to directly seep into the reducer body.

[0021] The connection components employ a design of fasteners, connectors, and fixing bolts, enabling the reflective and rapid heating structures to be easily and securely connected to the external heating structure. The installation process is simple, and the corresponding structure can be easily disassembled for later equipment maintenance, repair, or replacement of a component, reducing the difficulty and cost of equipment maintenance and improving the maintainability and service life of the entire equipment. Attached Figure Description

[0022] Figure 1 A schematic diagram of the main body of a gear structure for a reducer in a low-temperature environment, provided by this utility model;

[0023] Figure 2 A left-side cross-sectional view of a gear structure for a reducer in a low-temperature environment, provided by this utility model;

[0024] Figure 3A front view cross-sectional structural diagram of a gear structure for a reducer in a low-temperature environment, provided by this utility model;

[0025] Figure 4 A schematic diagram of a reflective structure for a gear structure in a low-temperature environment of a reducer, provided by this utility model;

[0026] Figure 5 This is a schematic diagram of the connecting assembly of a gear structure for a reducer in a low-temperature environment, provided by this utility model.

[0027] Legend: 1. Reducer assembly; 21. Insulation shell; 22. Water storage chamber; 23. Heating shell; 24. Heating chamber; 25. First heating rod; 26. Water inlet; 27. Cap; 28. First temperature sensor; 31. Mounting plate; 32. Aluminum foil reflector; 41. Fixing component; 42. Fixing hole; 43. Connecting component; 44. Fixing bolt; 51. Mounting base; 52. Second heating rod; 6. PLC controller; 7. Second temperature sensor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example

[0033] like Figure 1-5 As shown, this utility model provides a technical solution: In actual low-temperature environment applications, such as when starting large outdoor machinery in cold regions, if the reducer is in a low-temperature state, the lubricating oil of internal gears and other components will be highly viscous, and the physical properties of each component will be affected by the low temperature. If it cannot be quickly heated to a suitable working temperature, the start-up time of the entire equipment will be greatly extended, and it may even affect the normal start-up process. In this utility model, when encountering such an emergency low-temperature start-up situation, the PLC controller 6 activates several second heating rods 52 in the mounting base 51. These second heating rods 52 can quickly convert electrical energy into heat energy, generating a large amount of heat. Because they are directly installed... Mounted on the back wall of the external heating structure, close to the main body 1 of the reducer, heat can be quickly transferred to the main body 1 of the reducer and its internal gear structure and other key parts. This effectively shortens the time it takes for the equipment to heat up to the normal operating temperature in low-temperature environments, allowing the reducer to enter normal operating conditions more quickly. For example, in some industrial production lines that require rapid response, the rapid heating function can ensure that the reducer drives the relevant transmission components to operate in a timely manner, avoiding production stoppages caused by waiting for heating up, improving the response efficiency of the equipment, and minimizing the adverse effects of slow low-temperature start-up on the entire equipment operation process, such as delays in production progress and impacts on the collaborative work of upstream and downstream equipment.

[0034] Based on Joule's law, when current passes through a heating rod with a certain resistance, electrical energy is converted into heat energy. The generated heat is transferred to the surroundings through heat conduction, heat radiation, etc. Since it is close to the reducer body 1, the heat transfer path is short and the heat loss is relatively small, so it can quickly heat up the reducer body 1.

[0035] In the heating and heat preservation process under low-temperature conditions, the effective utilization of heat is crucial. In this invention, the aluminum foil reflector 32 fixedly installed on the inner wall of the mounting plate 31 plays a key role in the reflective structure. When the second heating rod 52 in the rapid heating structure is activated to generate thermal radiation, the thermal radiation propagates energy in the form of electromagnetic waves. The aluminum foil reflector 32 has excellent reflective properties; it can reflect the heat carried in the thermal radiation, changing the direction of thermal radiation propagation. This allows more heat that would otherwise dissipate in other directions to concentrate on the reducer assembly 1 and its surrounding area, which requires heating. For example, in a relatively open low-temperature working environment... In this environment, without a reflective structure, heat would dissipate significantly into the surrounding space. However, the reflection by the aluminum foil reflector 32 allows heat to be concentrated in the target area, improving heat utilization efficiency and further accelerating the heating rate. This not only enables the equipment to reach its normal operating temperature and be put into operation more quickly, but also, from the perspective of overall energy consumption, with the same electrical energy input, more heat is used for heating due to reduced heat loss, which is equivalent to reducing energy consumption to a certain extent. From the perspective of energy saving and efficient energy utilization, the heating and heat preservation process in the low-temperature environment is optimized, which can effectively reduce operating costs for equipment that operates in a low-temperature environment for a long time.

[0036] The aluminum foil reflector 32 mainly utilizes its heat radiation reflection characteristics. When heat radiation encounters the aluminum foil surface, most of it will be reflected back according to the law of light reflection. According to the basic principle of heat radiation, the energy of heat radiation is related to the temperature and surface properties of the object. By changing the direction of heat radiation propagation through the reflector, heat is concentrated in the area to be heated, reducing the loss to the low-temperature environment, thereby improving the heat utilization efficiency.

[0037] Among various methods for ensuring the normal operation of a reducer in low-temperature environments, the external heating structure has unique advantages. This utility model's external heating structure has a water storage cavity 22 within the inner wall of its insulation shell 21, a heating shell 23 on top, and several first heating rods 25 inside the heating cavity 24. The heating cavity 24 is connected to the water storage cavity 22. In actual operation, firstly, an appropriate amount of water is injected into the water storage cavity 22 through the water inlet 26 (this can be sealed with a cap 27 to prevent water overflow; the cap 27 and the water inlet 26 are connected by a thread, ensuring a tight connection and ease of operation). Then, the PLC controller 6 controls the first heating rods 25 to turn on and adjust the heating power. Water has excellent heat transfer properties; when the first heating rods 25 generate heat in the heating cavity 24, the heat is transferred to the connected... The water in the water storage chamber 22 is heated, and the temperature rises. The heat is then evenly transferred to the reducer assembly 1 surrounded by the insulation shell 21 through heat conduction. This achieves slow and uniform temperature control of the reducer assembly 1. This method not only effectively insulates the reducer assembly after it has rapidly heated up, keeping the temperature within a suitable working range, but also has a lower design cost compared to some built-in heating methods. It also eliminates concerns about water seeping directly into the reducer assembly 1 due to heating component failure, preventing damage to precision components such as gears inside the reducer. This ensures stable operation of the equipment and extends its service life, making it particularly suitable for cost-sensitive applications and those requiring high equipment stability.

[0038] Water has a high specific heat capacity, which means that when it absorbs or releases the same amount of heat, its temperature change is relatively small. Therefore, it can play a good role in heat storage and uniform heat transfer. The first heating rod 25 generates heat and transfers it to the water in the heating chamber 24. After the water is heated, it transfers the heat to the wall of the water storage chamber 22 based on the principle of heat conduction (heat always flows from a high-temperature object to a low-temperature object), and then to the reducer body 1, so as to achieve a uniform and slow heating and heat preservation process.

[0039] In the design of the entire gear structure for low-temperature environments in the reducer, the rational design of the connecting components plays an indispensable role in the installation, maintenance, and long-term stable operation of the equipment. The connecting components used in this invention include a fixing member 41, a connecting member 43, and fixing bolts 44. The fixing member 41 is installed on the insulation shell 21, and its surface has several fixing holes 42. The connecting member 43 is respectively installed on the mounting plate 31 of the reflective structure and the mounting base 51 of the rapid heating structure. The fixing bolts 44 pass through the connecting member 43 and connect it to the fixing holes 42, thus firmly connecting the reflective structure and the rapid heating structure to the external heating structure. During the initial installation of the equipment, the operator only needs to align the connecting member 43 with the fixing holes 42 on the fixing member 41 and then insert it. Simply insert and tighten the fixing bolt 44. The operation is simple and convenient, requiring no complicated assembly process, which can effectively improve installation efficiency. During the subsequent use of the equipment, when maintenance or repair of the reflective structure or rapid heating structure is required, or when the corresponding parts need to be replaced due to component damage, simply unscrew the fixing bolt 44 to easily disassemble the corresponding structure. This facilitates internal inspection, repair, or replacement of new parts, greatly reducing the difficulty and cost of equipment maintenance. This easy-to-disassemble and install connection method significantly improves the maintainability of the entire equipment throughout its life cycle, which is conducive to timely resolution of equipment problems, ensuring long-term stable operation of the equipment, extending the service life of the equipment, and reducing downtime and maintenance costs caused by equipment failure.

[0040] The engagement between the fixing bolt 44 and the fixing hole 42 utilizes the fastening principle of threaded connection. By rotating the fixing bolt 44, the threads of the bolt and the threads of the fixing hole 42 mesh together, generating friction and axial tension, thereby tightly connecting the connector 43 and the fixing member 41 to achieve a stable structural connection. When disassembling this connection, simply rotate the fixing bolt 44 in the opposite direction to overcome the friction between the threads, and the connection can be released, achieving the effect of easy disassembly.

[0041] Work process summary

[0042] Preparation stage before equipment start-up: Inject an appropriate amount of water into the water storage chamber 22 through the water inlet 26 of the external heating structure, and then tighten the cap 27 to ensure a good seal.

[0043] Check the connections of each component to ensure that the reflective structure and rapid heating structure are securely connected to the external heating structure via the connecting components. Also, confirm that the electrical connections of the PLC controller 6, each temperature sensor, and the heating rod are normal.

[0044] Low-temperature start-up and heating stage: When the equipment needs to be started in a low-temperature environment, the PLC controller 6 first controls the second heating rod 52 in the rapid heating structure to turn on. The second heating rod 52 quickly converts electrical energy into heat energy, and the generated heat radiation spreads in all directions. At this time, the aluminum foil reflector 32 in the reflective structure reflects the heat radiation, so that the heat is concentrated on the reducer body 1, accelerating its heating speed and allowing it to quickly reach a preliminary suitable working temperature range. During the rapid heating process, the second temperature sensor 7 monitors the temperature of the space inside the external heating structure in real time and feeds back the temperature data to the PLC controller 6.

[0045] Slow and uniform heating and heat preservation stage: When the temperature reaches a certain level, the PLC controller 6 controls the second heating rod 52 in the rapid heating structure to adjust its power or turn it off according to the actual temperature (if the temperature meets the requirements). At the same time, the first heating rod 25 in the external heating structure is turned on. Through the heat transfer between the heating chamber 24 and the water storage chamber 22, the reducer body 1 is slowly and uniformly heated, so that its temperature is further stabilized in a more suitable working range and continuously kept warm to ensure stable operation of the equipment. During this process, the first temperature sensor 28 in the water storage chamber 22 monitors the water temperature in real time and feeds the data back to the PLC controller 6. The PLC controller 6 then accurately controls the heating power of the first heating rod 25.

[0046] Equipment operation and maintenance phase: During normal operation of the equipment, each temperature sensor continuously monitors the temperature, and the PLC controller 6 adjusts parameters such as the heating rod power according to temperature changes to ensure that the temperature is always within a suitable range.

[0047] When equipment maintenance, repair, or replacement of a component is required, such as a problem with a component in the reflective structure or rapid heating structure, the operator can remove the corresponding structure by unscrewing the fixing bolts 44 of the connecting assembly, perform the corresponding operation, and then reinstall the component by fixing the bolts 44. The equipment can then be put back into use.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear structure for a low-temperature environment reducer, comprising a reducer assembly (1), characterized in that: An external heating structure is provided on the outside of the reducer assembly (1). The external heating structure is used to slowly and uniformly control the internal temperature. A rapid heating structure is installed on the back side wall of the external heating structure. A reflective structure is provided on the front of the external heating structure. The reflective structure and the rapid heating structure are connected to the external heating structure through several connecting components. A second temperature sensor (7) is also provided on the top of the reducer assembly (1). The second temperature sensor (7) is used to monitor the internal temperature of the external heating structure in real time. A PLC controller (6) is also installed on the right side wall of the external heating structure. The PLC controller (6) is used to control the external heating structure, the rapid heating structure and the reducer assembly (1).

2. The gear structure for a reducer in a low-temperature environment according to claim 1, characterized in that: The external heating structure includes an insulated shell (21), a water storage cavity (22) is provided in the inner wall of the insulated shell (21), a heating shell (23) is provided on the top of the insulated shell (21), a heating cavity (24) is provided inside the heating shell (23), a plurality of first heating rods (25) are provided inside the heating cavity (24), a water inlet (26) is provided on the top of the heating shell (23), a cap (27) is provided on the top of the water inlet (26), and a plurality of first temperature sensors (28) are provided inside the water storage cavity (22).

3. The gear structure for a reducer in a low-temperature environment according to claim 2, characterized in that: The heating chamber (24) of the heating shell (23) is connected to the water storage chamber (22) of the heat insulation shell (21). The PLC controller (6) can control the opening and heating power of several first heating rods (25). The first temperature sensor (28) is used to detect the temperature of the water in the water storage chamber (22) and is electrically connected to the PLC controller (6). The cap (27) is threadedly connected to the water inlet (26).

4. The gear structure for a reducer in a low-temperature environment according to claim 3, characterized in that: The rapid heating structure includes a mounting base (51), inside which are provided a plurality of second heating rods (52). The plurality of second heating rods (52) are electrically connected to the PLC controller (6), and the PLC controller (6) is used to control the opening and power of the plurality of second heating rods (52).

5. A gear structure for a reducer in a low-temperature environment according to claim 4, characterized in that: The reflective structure includes a mounting plate (31), on which an aluminum foil reflector (32) is mounted, and the mounting plate (31) and the aluminum foil reflector (32) are fixedly connected.

6. A gear structure for a reducer in a low-temperature environment according to claim 5, characterized in that: The second heating rod (52) is used in conjunction with the aluminum foil reflector (32). When the second heating rod (52) is turned on, the aluminum foil reflector (32) will reflect the heat radiation generated by the second heating rod (52), thereby accelerating the heating.

7. A gear structure for a reducer in a low-temperature environment according to claim 6, characterized in that: The connecting assembly includes a fastener (41), the surface of which is provided with a plurality of fixing holes (42), and a connector (43) is provided at the connection of the fastener (41), and a plurality of fixing bolts (44) are provided on the connector (43).

8. A gear structure for a reducer in a low-temperature environment according to claim 7, characterized in that: The fastener (41) is installed on the heat insulation shell (21), the connector (43) is installed on the mounting plate (31) and the mounting base (51), and the fixing bolt (44) passes through the connector (43) and connects with the fixing hole (42).

Images