Double-screw gearbox convenient for adding lubricating oil

Abstract

The utility model provides a double-screw gear box convenient to add lubricating oil, which belongs to the technical field of double-screw gear boxes, and comprises a lower shell, a mounting plate, a connecting disc, an upper shell, a lower shell, an upper shell and a lower shell, the lubricating structure comprises an oil tank installed at the top end of the upper shell, a tank cover arranged at the top end of the oil tank in a sleeving mode, an oil dripping pipe connected to one side of the tank cover and a recycling assembly installed on one side of the oil tank. According to the gear lubricating device, lubricating oil is injected into the oil tank, the oil dripping pipe drips the lubricating oil to the top of a gear to lubricate the gear, the oil pump is started to extract the lubricating oil at the bottom of the lower shell and guide the lubricating oil into the oil tank, so that the lubricating oil is recycled, and the lubricating function of the gear lubricating device is achieved; according to the gear lubricating device, a gear can be conveniently and rapidly lubricated, so that the gear runs more smoothly, meanwhile, dripped lubricating oil can be conveniently recycled, and the loss of the lubricating oil is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw gear boxes, in particular to a twin-screw gear box which is convenient for adding lubricating oil. Background Art

[0002] The twin-screw gearbox is an important component of the co-rotating twin-screw extruder. Its function is to convert the rotational motion of the co-rotating twin-screw into feed motion and pressure. The gearbox transmits power through gears to enable the screw to rotate. Its internal structure is mainly composed of driving shaft gears, driven shaft gears and end cover bearings.

[0003] After searching, the Chinese patent application number 202220330596.1 discloses a highly stable twin-screw gearbox, which includes a housing, and a main shaft, an output shaft and a transmission shaft are movably installed inside the housing, and the output shaft is located between the main shaft and the transmission shaft; a first gear groove, a second gear groove and a limit groove are provided inside the housing, and the limit groove is located between the first gear groove and the second gear groove, one end of the housing is fixedly connected to the first support platform, and the other end of the housing is fixedly connected to the second support platform and the connecting platform, and the second support platform is located on one side of the connecting platform, and the tops of the first support platform and the second support platform are both provided with a card slot; an oil filling seat is detachably installed at one end of the first gear groove, and a through hole and a lubrication port are provided at one end of the oil filling seat, and the lubrication port is connected to one end of the through hole, and a lubrication hole is provided on the inner side of the lubrication port. This highly stable twin-screw gearbox has the effect of ensuring the working position of the shaft and the stability of the rotation work;

[0004] The above patent still has the following shortcomings: (1) It is not convenient to lubricate with oil. During the use of the above device, oil is manually injected through the hole for lubrication. The lubrication process is cumbersome. In addition, the hole is too small, and the oil is easily spilled during the injection process, which affects the lubrication effect.

[0005] (2) The defect of being inconvenient to clean the surface of the gear. During the operation of the device, the surface of the gear wears and produces debris, which adheres to the surface of the gear. As a result, the friction coefficient of the gear increases during operation, causing increased wear and shortening the service life of the gearbox.

[0006] Therefore, a twin-screw gearbox that is convenient for adding lubricating oil is urgently needed to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to address the existing defect of inconvenient oil injection and lubrication. During use, the above-mentioned device is manually injected with oil through holes for lubrication, and the lubrication process is cumbersome. In addition, the holes are too small, and the oil is easily spilled during the injection process, which affects the lubrication effect.

[0008] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0009] A twin-screw gearbox convenient for adding lubricating oil comprises a lower housing, and further comprises:

[0010] A mounting plate fixed to the outer side of the bottom end of the lower shell;

[0011] A connection plate is fixed to the top of the lower shell, and the top of the connection plate is installed with the upper shell;

[0012] A lubrication structure is arranged at the top of the upper shell, wherein the lubrication structure comprises an oil tank installed at the top of the upper shell, a tank cover sleeved on the top of the oil tank, an oil dripping pipe connected to one side of the tank cover, and a recovery component installed on one side of the oil tank;

[0013] The cleaning structure is arranged inside the lower shell:

[0014] An input shaft is inserted into one side of the lower housing, and a second gear set is installed on the outer side of the input shaft, and a second connecting shaft is installed inside one side of the second gear set;

[0015] A third gear set is sleeved on the outside of the second connecting shaft, and a transmission shaft is inserted into one side of the third gear set, the first gear set is fixed on the outside of the transmission shaft, and the first connecting shaft is fixed on one side of the inside of the first gear set;

[0016] The bearing is sleeved on the outer side of the input shaft.

[0017] As a preferred technical solution of the present application, the recovery assembly includes an oil pump installed on one side of the oil tank, a filter connected to one side of the oil pump, and an oil suction pipe connected to the bottom end of the filter and extending to the inside of the lower shell.

[0018] Through the above technical solution, the oil pump is started to extract the lubricating oil at the bottom of the lower shell through the oil suction pipe and introduce it into the oil tank to facilitate the recycling of the lubricating oil. At the same time, the oil suction pipe filters out foreign matter and impurities in the lubricating oil.

[0019] As a preferred technical solution of the present application, an external thread is arranged on the outer side wall of the oil tank, and an internal thread cooperating with the external thread is arranged inside the tank cover.

[0020] Through the above technical solution, it is convenient to separate the tank cover from the oil tank by rotation and inject lubricating oil into the interior of the tank cover.

[0021] As a preferred technical solution of the present application, the filter is connected to the lower shell through an oil suction pipe, and the oil dripping pipe extends into a groove inside the upper shell.

[0022] Through the above technical solution, the oil dripping pipe can directly drip the lubricating oil onto the top of the gear.

[0023] As a preferred technical solution of the present application, the cleaning structure includes a fixing frame fixed at the bottom end of the lower shell, a spring fixed at the top of the fixing frame, a brush plate fixed at the top of the spring, and a guide rod installed at the bottom end of the brush plate.

[0024] Through the above technical solution, the brush plate is pushed upward by the elastic force of the spring, so that the brush plate contacts the gear to clean the debris on the surface of the gear.

[0025] As a preferred technical solution of the present application, a sliding structure is formed between the guide rod and the fixed frame, and when the brush plate contacts the second gear set, the spring is in a contracted state.

[0026] Through the above technical solution, the guide rod slides inside the fixed frame to guide the movement of the brush plate, so that the brush plate can only move in a straight line.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] In the scheme of this application:

[0029] By injecting lubricating oil into the oil tank, the oil dripping pipe drips the lubricating oil on the top of the gear for lubrication, and the oil pump is started to extract the lubricating oil at the bottom of the lower shell and introduce it into the oil tank, so as to facilitate the circulation of the lubricating oil. Thus, the lubrication function of the device is realized, which is convenient for lubricating the gears conveniently and quickly, making the gears run more smoothly, and at the same time, it is convenient to circulate the dripping lubricating oil to reduce the loss of lubricating oil.

[0030] The brush plate is pushed upward by the elastic force of the spring, so that the brush plate contacts the gear to clean the debris on the gear surface, thereby realizing the surface cleaning function of the device, facilitating the cleaning of debris on the gear surface, reducing the wear of the gear by debris, and extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is one of the schematic diagrams of the structure of the utility model;

[0032] Figure 2 This is the second schematic diagram of the structure of the utility model;

[0033] Figure 3 This is the third schematic diagram of the structure of the utility model;

[0034] Figure 4 This is a schematic diagram of the three-dimensional structure of the cleaning structure provided in this application.

[0035] Indications in the figure: 1. lower housing; 2. transmission shaft; 3. first connecting shaft; 4. mounting plate; 5. connecting plate; 6. upper housing; 7. lubrication structure; 701. oil dripping pipe; 702. tank cover; 703. oil tank; 704. oil pump; 705. filter; 706. oil suction pipe; 8. cleaning structure; 801. fixing frame; 802. brush plate; 803. guide rod; 804. spring; 9. bearing; 10. first gear set; 11. second gear set; 12. third gear set; 13. second connecting shaft; 14. input shaft. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0037] like Figure 1-4 As shown, the twin-screw gearbox for convenient lubrication oil addition proposed in this embodiment includes a lower housing 1, and also includes:

[0038] A mounting plate 4 is fixed to the outer side of the bottom end of the lower housing 1;

[0039] The connection plate 5 is fixed to the top of the lower housing 1, and the top of the connection plate 5 is installed with the upper housing 6;

[0040] The lubrication structure 7 is arranged at the top of the upper shell 6, wherein the lubrication structure 7 includes an oil tank 703 installed at the top of the upper shell 6, a tank cover 702 sleeved on the top of the oil tank 703, an oil dripping pipe 701 connected to one side of the tank cover 702, and a recovery component installed on one side of the oil tank 703;

[0041] The cleaning structure 8 is arranged inside the lower housing 1:

[0042] An input shaft 14 is inserted into one side of the lower housing 1, and the second gear set 11 is installed on the outer side of the input shaft 14, and the second connecting shaft 13 is installed inside one side of the second gear set 11;

[0043] The third gear set 12 is sleeved on the outside of the second connecting shaft 13, and the transmission shaft 2 is inserted into one side of the third gear set 12, the first gear set 10 is fixed on the outside of the transmission shaft 2, and the first connecting shaft 3 is fixed on one side of the first gear set 10;

[0044] The bearing 9 is sleeved on the outer side of the input shaft 14 .

[0045] like Figure 1 , Figure 2 and Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the recovery component includes an oil pump 704 installed on one side of the oil tank 703, a filter 705 connected to one side of the oil pump 704, and an oil suction pipe 706 connected to the bottom end of the filter 705 and extending to the inside of the lower shell 1, the outer wall of the oil tank 703 is provided with an external thread, and the inside of the tank cover 702 is provided with an internal thread that cooperates with the external thread, the filter 705 is connected to the lower shell 1 through the oil suction pipe 706, and the oil dripping pipe 701 extends to the inside of the upper shell 6 The oil tank 703 is opened by rotating the box cover 702, and the lubricating oil can be directly injected into the interior of the oil tank 703, and then enters the interior of the upper shell 6 through the oil dripping pipe 701, and drips on the top of the gear to lubricate the gear. The dripping lubricating oil on the surface of the gear accumulates at the bottom of the lower shell 1. By starting the oil pump 704, the lubricating oil at the bottom of the lower shell 1 is extracted through the oil suction pipe 706 and introduced into the interior of the oil tank 703, so as to facilitate the circulation of the lubricating oil. At the same time, the oil suction pipe 706 filters out foreign matter and impurities in the lubricating oil.

[0046] like Figure 3 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the cleaning structure 8 includes a fixing frame 801 fixed at the bottom end of the lower shell body 1, a spring 804 fixed at the top of the fixing frame 801, a brush plate 802 fixed at the top of the spring 804, and a guide rod 803 installed at the bottom end of the brush plate 802. A sliding structure is formed between the guide rod 803 and the fixing frame 801. When the brush plate 802 contacts the second gear set 11, the spring 804 is in a contracted state. The brush plate 802 is pushed upward by the elastic force of the spring 804, so that the brush plate 802 contacts the gear. During the rotation of the gear, the brush plate 802 cleans the debris on the surface of the gear. At the same time, the guide rod 803 slides inside the fixing frame 801 to guide the movement of the brush plate 802, so that the brush plate 802 can only move in a straight line.

[0047] Specifically, when the twin-screw gearbox that is convenient for adding lubricating oil is used: by connecting the input shaft 14 to the motor shaft, connecting the first connecting shaft 3 and the second connecting shaft 13 to the extruder screw, starting the motor, so that the input shaft 14 transmits power to the second connecting shaft 13 through the second gear set 11, and at the same time the second connecting shaft 13 transmits power to the transmission shaft 2, so that the transmission shaft 2 drives the first connecting shaft 3 to rotate through the first gear set 10, providing power for the extruder, lubricating the gears through the lubrication structure 7, and at the same time the cleaning structure 8 cleans the bottom of the gears.

[0048] The oil tank 703 is opened by rotating the tank cover 702, and lubricating oil can be directly injected into the oil tank 703, and then enters the interior of the upper housing 6 through the oil dripping pipe 701, and drips on the top of the gear to lubricate the gear. The dripping lubricating oil on the surface of the gear accumulates at the bottom of the lower housing 1. The lubricating oil at the bottom of the lower housing 1 is extracted through the oil suction pipe 706 by starting the oil pump 704 and introduced into the interior of the oil tank 703, so as to facilitate the recycling of the lubricating oil. At the same time, the oil suction pipe 706 filters out foreign matter and impurities in the lubricating oil.

[0049] The brush plate 802 is pushed upward by the elastic force of the spring 804 so that the brush plate 802 contacts the gear. During the rotation of the gear, the brush plate 802 cleans the debris on the surface of the gear. At the same time, the guide rod 803 slides inside the fixed frame 801 to guide the movement of the brush plate 802 so that the brush plate 802 can only move in a straight line.

[0050] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A twin-screw gearbox for convenient lubrication oil addition, comprising a lower housing (1), characterized in that: Also includes, A mounting plate (4) fixed to the outer side of the bottom end of the lower housing (1); A connection plate (5) is fixed to the top of the lower housing (1), and an upper housing (6) is mounted on the top of the connection plate (5); A lubrication structure (7) is arranged at the top of the upper shell (6), wherein the lubrication structure (7) comprises an oil tank (703) installed at the top of the upper shell (6), a tank cover (702) sleeved on the top of the oil tank (703), an oil dripping pipe (701) connected to one side of the tank cover (702), and a recovery component installed on one side of the oil tank (703); The cleaning structure (8) is arranged inside the lower housing (1): An input shaft (14) is inserted into one side of the lower housing (1), and a second gear set (11) is installed on the outside of the input shaft (14), and a second connecting shaft (13) is installed inside one side of the second gear set (11); A third gear set (12) is sleeved on the outside of the second connecting shaft (13), and a transmission shaft (2) is inserted into one side of the third gear set (12), the first gear set (10) is fixed on the outside of the transmission shaft (2), and the first connecting shaft (3) is fixed on one side of the inside of the first gear set (10); The bearing (9) is sleeved on the outer side of the input shaft (14).

2. A twin-screw gearbox for convenient lubrication oil addition according to claim 1, characterized in that: The recovery assembly comprises an oil pump (704) installed on one side of the oil tank (703), a filter (705) connected to one side of the oil pump (704), and an oil suction pipe (706) connected to the bottom end of the filter (705) and extending to the interior of the lower housing (1).

3. A twin-screw gearbox for convenient lubrication oil addition according to claim 2, characterized in that: An external thread is provided on the outer wall of the oil tank (703), and an internal thread matching the external thread is provided inside the tank cover (702).

4. A twin-screw gearbox for convenient lubrication oil addition according to claim 2, characterized in that: The filter (705) is connected to the lower shell (1) via an oil suction pipe (706), and the oil dripping pipe (701) extends into a groove inside the upper shell (6).

5. A twin-screw gearbox for convenient lubrication oil addition according to claim 1, characterized in that: The cleaning structure (8) comprises a fixing frame (801) fixed to the bottom end of the lower housing (1), a spring (804) fixed to the top end of the fixing frame (801), a brush plate (802) fixed to the top end of the spring (804), and a guide rod (803) mounted on the bottom end of the brush plate (802).

6. A twin-screw gearbox for convenient lubrication oil addition according to claim 5, characterized in that: A sliding structure is formed between the guide rod (803) and the fixing frame (801); when the brush plate (802) is in contact with the second gear set (11), the spring (804) is in a contracted state.

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