CN214331429U

CN214331429U - Gearbox box and gearbox

Info

Publication number: CN214331429U
Application number: CN202022470518.5U
Authority: CN
Inventors: 宋菁菁; 元万荣
Original assignee: Atlas Copco Wuxi Compressor Co Ltd
Current assignee: Atlas Copco Wuxi Compressor Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-10-01
Anticipated expiration: 2030-10-30
Also published as: WO2022089457A1

Abstract

The utility model provides a gear box and gear box, gear box includes the main casing body, wherein, is equipped with the cavity in the main casing body, is provided with oil inlet, oil-out, bypass device interface and first passageway on the main casing body, and the oil inlet communicates with the bypass device interface, and the bypass device interface communicates with first passageway, oil-out respectively, and first passageway communicates with oil inlet, cavity respectively. The gear box can integrate the interface of the bypass device on the main shell, and the bypass device connected with the interface of the bypass device is communicated with the cavity through the first channel, so that the purpose of conveying lubricating oil to the gear to lubricate the gear is realized, the layout and the assembly are simple, and the damage of the gear box caused by errors in the layout or the assembly is avoided; but also shortens the pipeline of the lubricating oil system and reduces the production cost.

Description

Gearbox box and gearbox

Technical Field

The utility model relates to a general machinery technical field, in particular to gear box and gear box.

Background

In a screw compressor system based on gear transmission, a motor is adopted in a transmission chain and is directly connected with a compressor head through a gearbox box body of a gearbox. The gearbox in the prior art is only used as a gearbox, the gearbox body has a simple structure, and the gearbox has the functions of transmitting torque to a machine head, enveloping a gear set and related components and the like, and cannot convey lubricating oil to a gear to lubricate the gear; further, the purpose of conveying lubricating oil to the gear to lubricate the gear is achieved by arranging an oil pump, an oil tank, a bypass valve and other components arranged outside on the compressor chassis. However, the layout of the mode is complex, the assembly steps are multiple, and once errors occur in the layout or the assembly, the gearbox is damaged, and the like; moreover, the lubricating oil system has long pipelines, which results in high cost.

Disclosure of Invention

In view of this, the embodiment of the present disclosure provides a gearbox casing and a gearbox, so as to solve the problems that in the prior art, the purpose of delivering lubricating oil to a gear to lubricate the gear is achieved by arranging an externally arranged oil pump, an oil tank, a bypass valve and other components on a compressor chassis, so that the layout is complex, the number of assembly steps is large, and once an error occurs in the layout or assembly, the gearbox is damaged; in addition, the lubricating oil system has long pipelines, which causes the problems of high cost and the like.

On one hand, the embodiment of the disclosure provides a gearbox box body, which comprises a main shell, wherein a cavity is arranged in the main shell, an oil inlet, an oil outlet, a bypass device interface and a first channel are arranged on the main shell, the oil inlet is communicated with the bypass device interface, the bypass device interface is respectively communicated with the first channel and the oil outlet, and the first channel is respectively communicated with the oil inlet and the cavity.

In some embodiments, a cooling oil inlet is provided on the main housing, an oil spray port is provided on an inner side wall of the main housing, the cooling oil inlet is connected with the oil spray port through a second passage, and the oil outlet is used for communicating with the cooling oil inlet through an external cooler.

In some embodiments, a bypass device interfaced with the bypass device includes a first port connected to the oil inlet, a second port connected to the oil outlet, and a pressure relief port in communication with the cavity through a first passage.

In some embodiments, an oil temperature sensor port and an oil pressure sensor port are disposed on the second passage.

In some embodiments, an oil baffle is further disposed on an inner side wall of the main housing.

In some embodiments, a bearing lubrication baffle is disposed atop the inner sidewall of the main housing.

In some embodiments, an oil filter interface and a breather interface are provided on the main housing, the oil filter interface being disposed between the cooling oil inlet and the cavity, the breather interface being connected to an external breather.

In some embodiments, the gearbox housing further comprises an oil return port disposed at a bottom of the cavity.

In some embodiments, the main casing body comprises an inner rib framework, a fixing foot seat, a first end face and a second end face, wherein the first end face and the second end face are oppositely arranged, the inner rib framework is arranged on the second end face, the fixing foot seat is connected with the bottom of the main casing body, the first end face is connected with a compressor head, and the second end face is connected with a motor.

In still another aspect, embodiments of the present disclosure further provide a gearbox, which includes any one of the gearbox housings described above.

According to the oil injection device, the interface of the bypass device and the oil injection port can be integrated on the main shell, the bypass device connected with the interface of the bypass device is communicated with the cavity through the first channel, and the cooling oil inlet is communicated with the oil injection nozzle connected with the oil injection port through the second channel, so that the purpose of conveying lubricating oil to the gear to lubricate the gear is achieved, the layout and the assembly are simple, and the damage of the gear box caused by errors in the layout or the assembly is avoided; but also shortens the pipeline of the lubricating oil system and reduces the production cost.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first perspective view of a gearbox housing provided by the present disclosure;

FIG. 2 is a second perspective view of a gearbox housing provided by the present disclosure

FIG. 3 is a cross-sectional view of a gearbox housing provided by the present disclosure.

Reference numerals:

1-a main housing; 2-inner rib skeleton; 3-fixing the foot seat; 4-a head lubricating oil inlet; 5-a bypass device interface; 51-an oil inlet; 52-oil outlet; 6-cooling oil inlet; 7-an oil nozzle; 8-oil baffle; 9-oil return port; 10-oil filter interface; 11-bearing lubrication baffle; 12-oil temperature sensor port; 13-oil pressure sensor port; 14-a respirator interface; a-a first channel; b-a second channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

FIG. 1 illustrates a first perspective view, FIG. 1 illustrates a second perspective view, and FIG. 3 illustrates a cross-sectional view of a gearbox housing provided by an embodiment of the present disclosure. As can be seen from fig. 1 and 2, the gear box is used in a compressor system, one end of the gear box is connected with a compressor head, the other end of the gear box is connected with a motor for driving the compressor to operate, the gear box body is used for accommodating a gear set, and the gear set at least comprises a synchronous gear and a transmission gear which are matched with the compressor head; specifically, the gearbox box body comprises a main shell 1, an inner rib framework 2 and a fixing foot seat 3; wherein, a cavity is formed in the main shell 1 and is used for accommodating the gear set; the main shell 1 comprises a first end face and a second end face which are opposite, wherein an opening is formed in the first end face of the main shell 1, the first end face is connected with the compressor head, a transmission shaft of the compressor head and a gear set in the gear box can be in transmission connection through the opening, a head lubricating oil inlet 4 is further formed in the first end face, and lubricating oil can enter the compressor head through the head lubricating oil inlet 4; the second end face of the main shell 1 is used for being connected with a motor, the inner rib framework 2 is arranged on the second end face, is used for enhancing the structural stability of the main shell 1 of the gearbox body and can be connected with a shell of the motor; the fixing foot 3 is connected to the bottom of the main housing 1, and is used to stably fix the main housing 1 at a predetermined position, such as a floor or the like. Here, the main housing 1, the inner rib frame 2 and the fixing foot 3 may be integrally cast to minimize the manufacturing cost.

Further, referring to fig. 1 to 3, an oil inlet 51, an oil outlet 52, a bypass device interface 5 and a first channel a are provided on the main housing 1, the oil inlet 51 is communicated with the bypass device interface 5, and the bypass device interface 5 is respectively communicated with the first channel a and the oil outlet 52. The first channel A is communicated with the oil inlet 51 and the cavity respectively; wherein the bypass device may be a bypass valve or the like.

Specifically, the bypass device comprises a valve body with a spring, a first port and a second port, the first port of the bypass device 5 is connected with the oil inlet 51, and the second port is connected with the oil outlet 52, so as to be connected with an external oil tank to input the lubricating oil in the external oil tank into the main shell 1; here, since the temperature of the lubricating oil input through the oil inlet 51 is high, the oil outlet 52 is also connected with an external cooler, and the external cooler is connected with the cooling oil inlet 6 provided on the main housing 1, so that the lubricating oil discharged from the oil outlet 52 is cooled to a proper temperature by the external cooler and then is conveyed back into the main housing 1 for lubrication. Still be provided with the nozzle opening 7 that sets up on the inboard on the main casing body 1, cooling oil entry 6 passes through second passageway B in the main casing body 1 with the fuel sprayer intercommunication that nozzle opening 7 is connected, the fuel sprayer that nozzle opening 7 is connected is used for spouting the lubricating oil after the cooling to in the cavity of main casing body 1, in order to lubricate in the cavity the gear train. Preferably, the oil nozzle connected with the oil nozzle 7 is arranged at the position close to the right of the central line of the driving gear in the cavity, and the driven gear is lubricated through transmission meshing.

Further, the bypass device further comprises a pressure relief opening, and the pressure relief opening is communicated with the cavity inside the main shell 1 through a first passage A. In actual use, the lubricating oil delivered by the external oil tank enters the bypass device through the first port, when the lubricating oil meets a preset condition, a part of the lubricating oil in the lubricating oil is delivered to the cavity inside the main housing 1 through the pressure relief port and the first passage a to achieve pressure relief, and another part of the lubricating oil in the lubricating oil enters the external cooler through the oil outlet 52 to be cooled; specifically, the preset condition here refers to that, when the oil pressure of the lubricating oil input through the first port is greater than a preset threshold, where the preset threshold may be determined based on a spring parameter of a valve body in the bypass device, that is, when the oil pressure of the lubricating oil input through the first port is greater than a preset threshold, a spring in the bypass device may be pushed open, so that the bypass device is switched from a closed state to an open state, and further the oil inlet 51 is communicated with the pressure relief port and the first passage a, so that a part of the lubricating oil in the lubricating oil flows from the oil inlet 51 to the first passage a, and finally flows into the cavity in the main housing 1 to achieve the purpose of pressure relief, thereby preventing the oil pressure of the lubricating oil in the bypass device from being too high to cause impact on the gear set, the external cooler, and the like, which results in gear shift, and the oil pressure of the gear set, External coolers, etc.

Because the lubricating oil is injected into the cavity of the main shell 1 through the oil injection nozzle connected with the oil injection port 7, further, an oil baffle plate 8 is arranged on the inner side wall of the main shell 1, two side edges of the oil baffle plate 8 are respectively connected with the first end surface and the second end surface of the main shell 1, and the oil baffle plate is used for blocking the injected lubricating oil so as to inject the lubricating oil onto the gear set as much as possible, and the transverse strength of the gearbox body can also be improved; the shape of the oil baffle plate 8 is the same as that of part of the inner side wall of the main shell 1; and, the size of the oil deflector 8 is determined based on the size of the main casing 1. The oil baffle plate 8 is used for isolating the lubricating oil flowing out of the pressure relief opening from the gear of the main shell 1, so that the damage of the high-temperature lubricating oil, namely the lubricating oil which is not cooled by an external cooler, to the gear is avoided, and the stability of the gear box is ensured. Preferably, the distance between the oil baffle 8 and the gear in the cavity is greater than 30 mm.

In actual production, the main housing 1 and the oil baffle plate 8 can be integrally cast as a whole, thereby avoiding unnecessary increase of production cost.

Further, the gearbox body further comprises an oil return port 9, and the oil return port 9 is arranged at the bottom of the inner side wall of the main shell 1, namely the bottom of the cavity; the oil return port 9 is used for discharging the lubricating oil flowing out of the pressure relief port out of the main casing 1. Specifically, the diameter of the oil return opening 9 is designed to be larger as much as possible, meanwhile, the oil return opening is prevented from being covered by a lower projection of the gear, oil stagnation at the bottom of the gear box caused by unsmooth oil return is prevented, and further, once the oil level at the bottom of the gear box is too high, the gear which runs at a high speed can bring the oil-returned lubricating oil to generate oil mist.

Referring to fig. 1 and 2, an oil filter interface 10 is further disposed on the main housing 1, the oil filter interface 10 is disposed between the cooling oil inlet 6 and the main housing 1, and is connected to the external filtering device, and the external filtering device is configured to filter the cooled lubricating oil to filter metal particles, impurities, and the like in the lubricating oil, so as to ensure that the oil is clean, and further ensure that the gear box can safely operate.

Referring to fig. 3, a bearing lubrication baffle 11 is arranged on the top of the inner side wall of the main housing 1; bearing lubrication baffle 11 is close to oil spout 7 sets up, bearing lubrication baffle 11 is used for accepting a part of oil droplet that the gear rotation in-process was thrown away, and makes oil droplet flow to with gear connection's bearing is in order to lubricate the bearing. Wherein, another part oil drop that the gear rotation in-process was thrown away by oil baffle 8 accepts, oil return opening 9 still is used for with the oil drop that oil baffle 8 accepted is discharged main casing 1.

With continued reference to fig. 1-3, an oil temperature sensor port 12 and an oil pressure sensor port 13 are disposed in the second passage B; the oil temperature sensor port 12 is used for fixing an oil temperature sensor so that the oil temperature sensor detects a temperature value of the lubricating oil in the second passage B, for example, the lubricating oil which is cooled; the oil pressure sensor port 13 is used for fixing an oil pressure sensor so that the oil pressure sensor detects a pressure value in the second passage, such as the cooled lubricating oil; furthermore, based on the oil temperature sensor that oil temperature sensor port 12 department set up with the oil pressure sensor that oil pressure sensor port 13 department set up can real time monitoring in the second passageway B the state of lubricating oil, thereby avoid the too high lubricating oil transmission of temperature value and/or too high pressure value to the main casing body 1 of gear box is inside to cause the damage to the gear.

Furthermore, a respirator interface 14 is also provided on the main housing 1; the breather port 14 is connected to an external breather for regulating the temperature of the oil in the main housing 1. Specifically, when the temperature value of the lubricating oil in the second passage B detected by the oil temperature sensor arranged at the oil temperature sensor port 12 is too high, for example, the detected temperature value is greater than the highest temperature value that the gearbox can bear normal operation, the breather interface 14 may be opened, so that the purpose of heat dissipation and cooling through an external breather is achieved, and the stability of the gearbox is ensured. Here, in the process of lubricating the gear with the cooled lubricating liquid, oil mist is easily formed in the cavity of the main housing 1 because the gear is in an operating state; therefore, one end of the breather interface 14 is disposed on the inner side wall of the main housing 1 corresponding to the oil baffle 8, so that the oil baffle 8 can block the oil mist formed by the gears from entering the breather interface 14.

The gearbox body provided by the embodiment of the disclosure is integrated with a bypass device interface, an oil filter interface 10, an oil injection port 7, an oil temperature sensor port 12, an oil pressure sensor port 13 and the like, the bypass device connected with the bypass device interface is communicated with a cavity through a first channel, and a cooling oil inlet is communicated with an oil injection nozzle connected with the oil injection port through a second channel, so that the purpose of conveying lubricating oil to a gear to lubricate a gear set is achieved, the connection cost caused by independently arranging the bypass device, the oil filter, the oil injection nozzle, the oil temperature sensor, the oil pressure sensor and the like is saved, meanwhile, the layout is simple, the assembly steps are reduced, errors in the layout or assembly are avoided, a lubricating oil system pipeline is shortened, and the production cost is reduced; in addition, the main shell 1, the inner rib framework 2, the fixing foot seats 3 and the oil baffle plate 8 are integrally cast, so that the production cost cannot be increased; further, the bypass device can be switched from the closed state to the open state when the oil pressure of the lubricating oil in the bypass device meets a preset condition, so that a part of the lubricating oil in the lubricating oil flows to the first channel A, and the condition that the gear, the external cooler and the like are damaged due to impact on the gear, the external cooler and the like caused by overhigh oil pressure of the lubricating oil in the bypass device is avoided; the oil baffle plate 8 not only isolates a part of lubricating oil in the first channel A from the gear, so that the damage of the high-temperature lubricating oil to the gear is avoided, but also isolates the breather interface 14 from the gear, so that the oil mist formed by the gear is prevented from entering the breather interface 14, and the stability of the gear box is ensured.

The embodiment of the disclosure also provides a gearbox, which comprises the gearbox body.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.

Claims

1. The utility model provides a gearbox box, its includes the main casing body, its characterized in that, be equipped with the cavity in the main casing body be provided with oil inlet, oil-out, bypass device interface and first passageway on the main casing body, the oil inlet with bypass device interface intercommunication, bypass device interface with first passageway, the oil-out communicates respectively, first passageway with the oil inlet, the cavity communicates respectively.

2. The gearbox housing of claim 1, wherein a cooling oil inlet is provided on the main housing, an oil spray port is provided on an inner sidewall of the main housing, the cooling oil inlet is connected to the oil spray port via a second passage, and the oil outlet is adapted to communicate with the cooling oil inlet via an external cooler.

3. The gearbox housing of claim 1, wherein a bypass device interfaced with the bypass device includes a first port connected to an oil inlet, a second port connected to the oil outlet, and a pressure relief port in communication with the cavity through a first passage.

4. The gearbox housing of claim 2, wherein an oil temperature sensor port and an oil pressure sensor port are disposed on the second passage.

5. The gearbox housing of claim 1, wherein an oil baffle is further disposed on an inner sidewall of the main housing.

6. The gearbox housing of claim 1, wherein a bearing lubrication baffle is disposed at a top portion of an inner sidewall of the main housing.

7. The gearbox housing of claim 2, wherein an oil filter port and a breather port are provided on the main housing, the oil filter port being disposed between the cooling oil inlet and the cavity, the breather port being connected to an external breather.

8. The gearbox housing of claim 1, further comprising an oil return port disposed at a bottom of the cavity.

9. The gearbox housing of claim 1, wherein the main housing comprises an inner rib frame, a fixing foot seat, and a first end face and a second end face which are arranged oppositely, the inner rib frame is arranged on the second end face, the fixing foot seat is connected with the bottom of the main housing, the first end face is connected with a compressor head, and the second end face is connected with a motor.

10. A gearbox comprising a gearbox housing according to any of the preceding claims 1-9.