CN115585243A - Gearbox with oil leakage prevention structure - Google Patents

Abstract

The invention provides a gear box with an oil leakage prevention structure, and relates to the technical field of gear boxes, wherein the gear box comprises a box body, an oil seal part I, an oil seal part II and an air extraction part; the top of the box body is covered with a box cover, and two pairs of mounting grooves which are distributed in a staggered manner are arranged on the inner sides of the box body and the box cover in a penetrating manner along the horizontal direction; the first oil seal component is provided with two pairs and covers the outer wall of the box body and the outer wall of the box cover, and covers the outer part of the adjacent mounting groove and is used for sealing oil at the mounting groove; two groups of oil seal parts II are arranged and respectively cover one side of the outer part of each pair of oil seal parts I; the invention has the beneficial effects that: under the use of oil blanket part one and oil blanket part two, strengthened the oil-sealing dynamics between bearing and the mounting groove greatly, can make the atmospheric pressure value in the first sealing washer continuously maintain and predetermineeing the atmospheric pressure value, be favorable to first sealing washer bearing of laminating constantly, can in time remind the first sealing washer of staff to appear damaging, aspiration pump or electric air valve break down.

Description

Gearbox with oil leakage prevention structure

technical field

The invention relates to the technical field of gear boxes, and the invention relates to a gear box with an oil leakage prevention structure.

Background technique

With the continuous rapid development of the gearbox industry, more and more industries and different enterprises have applied the gearbox. The gearbox is widely used in printing and packaging machinery, three-dimensional garage equipment, environmental protection machinery, conveying equipment, chemical equipment, metallurgical mines Equipment and other occasions with high power, high speed ratio and high torque.

In the prior art, there are gears, bearing bushes and bearings in the gearbox, and lubricating oil for lubricating the gears is installed in the gearbox. There is a gap between the gearbox and the bearing, and a sealing ring is used to fill the gap to prevent lubrication in the gearbox. The oil flows out, but when the bearing rotates, a slight radial offset will occur. At this time, it is difficult for the sealing ring to fit the bearing at all times, and the problem of oil leakage will still occur. In addition, the sealing ring will expand with heat and contract with cold. It is difficult to adjust and will shorten the life of the seal.

Contents of the invention

Aiming at the above-mentioned technical problems existing in the prior art, a gear box with an oil leakage prevention structure is provided. With the use of the oil seal part 1 and the oil seal part 2, the oil sealing strength between the bearing and the installation groove is greatly strengthened, which can The air pressure in the first sealing ring is continuously maintained at the preset air pressure value, which is beneficial for the first sealing ring to stick to the bearing at all times, and can promptly remind the staff of damage to the first sealing ring, failure of the air pump or electric air valve.

Purpose and effect of the present invention are achieved by the following specific technical means:

A gear box with an oil leakage prevention structure, including a box body, oil seal part 1, oil seal part 2 and air extraction parts;

The top of the box is covered with a box cover, and the inside of the box and the box cover are horizontally penetrated by two pairs of installation grooves distributed in dislocation;

There are two pairs of oil seal parts and they are both covered between the box body and the outer wall of the box cover. The oil seal parts are covered outside the adjacent installation grooves for sealing oil at the installation grooves;

The oil seal part two is provided with two groups and is respectively covered on the outer side of each pair of the oil seal part one, and is used for sealing oil at the installation groove;

There are four sets of air extraction parts, all of which are installed on the outer wall of the box cover, and are used for the first inflation or deflation of the oil seal parts.

A further preferred solution: one end of the oil seal part one covered with the oil seal part two is an open end, and the other end of the oil seal part one is a closed end, and the oil seal part one includes a first sealing cover, a first sealing ring, Spring and inner sealing ring, the first sealing cover is placed between the box body and the outer wall of the box cover, the first sealing ring is hollow inside and embedded in the first sealing cover, and several springs are fixed on the first sealing In the ring, there are at least two inner sealing rings and they are all welded on the inner side of the first sealing ring.

A further preferred solution: bearing bushes and several oil baffles are fixed in the installation grooves, the oil baffles are located outside the bearing bushes, bearings are slidably connected between the two opposite bearing bushes, and the bearings are close to the two bearing bushes. The outer wall at the end has at least two annular grooves matching the inner sealing ring, the inner sealing ring is installed in the adjacent annular groove, the first sealing ring is connected to the adjacent oil baffle and bearing touch.

A further preferred solution: a main gear and an auxiliary gear are respectively installed on the exterior of the two bearings, the main gear and the auxiliary gear are in meshing connection, and the diameter of the main gear is larger than that of the auxiliary gear.

A further preferred solution: the oil seal part 2 includes a second sealing cover and a second sealing ring, the second sealing cover is sleeved on the outside of the adjacent bearing and is in contact with it, and the second sealing cover covers the adjacent bearing Outside the first sealing cover, the second sealing ring is installed inside the second sealing cover, and the bearing is in contact with the second sealing ring.

A further preferred solution: the air extraction component includes an air extraction pump and a hose,

The air suction pump is fixed on the outer wall of the box cover, the hose is embedded in the bottom of the air suction pump, and the end of the hose passes through the first sealing cover and the outer wall of the first sealing ring in turn and communicates with the inside of the first sealing ring.

A further preferred solution: electric air valves are installed on the outer wall of the hose, four air pressure sensors are installed on the outer wall of the box cover, and the outside of the air pressure sensor is connected with an induction head through a wire, and the induction head is inserted into a similar In the hose and below the electric gas valve, an alarm is fixed on the top of the box cover.

A further preferred solution: a support seat is installed at the bottom of the box for supporting the box.

Compared with prior art, the beneficial effect of the present invention is:

1. For this kind of gearbox, the setting of the first sealing ring not only fills the gap between the first sealing cover and the adjacent oil deflector, but also fills the gap between the first sealing cover and the bearing, so that the first sealing cover The seal between the adjacent oil baffle plate and the first sealing cover and the bearing is excellent. With the use of several springs, the first sealing ring can always stick to the bearing, which further strengthens the relationship between the first sealing cover and the bearing. The tightness between the inner seal ring and the annular groove makes the first seal ring and the bearing more tightly connected, which can effectively block the lubricating oil between the bearing and the first seal ring, and the use of the oil seal part 1 is greatly improved. Strengthen the oil sealing strength between the bearing and the installation groove;

2. The combined use of oil seal part 1 and oil seal part 2 is to double seal the gap between the end of the bearing extending out of the box and the gap between the box and the box cover, so as to prevent the lubricating oil in the box from flowing out of the gap;

3. Under the use of air extraction parts, air pressure sensor, alarm and PLC controller, first, it is convenient to inflate or deflate it according to the change of air pressure in the first sealing ring, so that the air pressure value in the first sealing ring Continuously maintaining the preset air pressure value can make the first sealing ring stick to the bearing at all times; second, it can promptly remind the staff that the first sealing ring is damaged, the air pump or the electric air valve is malfunctioning, and it is convenient for the staff to timely repair the first sealing ring. Check the sealing ring, air pump and electric valve one by one.

Description of drawings

Fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;

Fig. 2 is the overall side view structure schematic diagram of the present invention;

Fig. 3 is the top view structure schematic diagram of box body of the present invention;

Fig. 4 is a schematic diagram of the local structure at A of Fig. 2 of the present invention;

Fig. 5 is a schematic diagram of the local structure at B of Fig. 2 of the present invention;

FIG. 6 is a schematic diagram of a local structure at C in FIG. 1 of the present invention.

The reference numerals in the specific embodiment are as follows:

Box body 1, box cover 11, mounting groove 12, oil baffle plate 13, bearing bush 14;

Air extraction component 2, air extraction pump 21, hose 22, electric air valve 23;

Air pressure sensor 3;

Support seat 4;

main gear 5;

bearing 6;

Pinion 7;

Alarm 8;

Oil seal part one 9, first sealing cover 91, first sealing ring 92, spring 93, inner sealing ring 94;

Oil seal part two 10 , a second sealing cover 101 , and a second sealing ring 102 .

detailed description

Please refer to Fig. 1-6, the embodiment of the present invention is described further;

A gear box with an oil leakage prevention structure, including a box body 1, an oil seal part one 9, an oil seal part two 10 and an air extraction part 2;

The top of the box body 1 is covered with a box cover 11, and the inside of the box body 1 and the box cover 11 are horizontally connected with two pairs of mounting grooves 12 in dislocation distribution. The bottom of the box body 1 is equipped with a support seat 4 for supporting the box body 1. ;

The setting of the case cover 11 is to seal the top of the case body 1, ensure that the components in the gearbox are in a closed environment, and prevent foreign objects from entering the case body 1 and affecting the normal operation of the gearbox;

The support base 4 supports the box body 1, and the support base 4 is made of metal material, for example, the support base 4 can be made of steel or iron.

Bearing bushes 14 and several oil baffle plates 13 are fixed in the installation grooves 12. The oil baffle plates 13 are located outside the bearing bushes 14. Bearings 6 are slidably connected between the two oppositely arranged bearing bushes 14. Main bearings 6 are installed on the outside of the two bearings 6 respectively. Gear 5 and pinion gear 7, main gear 5 is engaged with pinion gear 7, and the diameter of main gear 5 is greater than the diameter of pinion gear 7;

Please refer to Figure 1 and Figure 3, lubricating oil can be installed in the box body 1, which is used for the lubrication of the main gear 5 and the auxiliary gear 7, reducing the friction between the main gear 5 and the auxiliary gear 7, and the bearing 6 of the main gear 5 is installed The outer end of the motor is fixed with a motor through a coupling, and the outer end of the bearing 6 with the pinion gear 7 is fixed with a generator or a transmission part through a coupling. Sliding inside, the bearing 6 will drive the main gear 5 to rotate. Since the main gear 5 is meshed with the auxiliary gear 7, the main gear 5 will drive the auxiliary gear 7, and the auxiliary gear 7 will drive the bearing 6 on it to rotate. The bearing 6 It can drive the generator or transmission parts, because the diameter of the main gear 5 is greater than the diameter of the auxiliary gear 7, so the number of teeth on the periphery of the main gear 5 is more than the number of teeth of the auxiliary gear 7, and then the rotation speed of the auxiliary gear 7 is greater than the rotation speed of the main gear 5, by Under the use of the gear box, the low-speed motor drives the generator to run at high speed to generate electricity or the transmission parts to rotate at high speed.

Further, when the main gear 5 and the auxiliary gear 7 rotate, the lubricating oil in the casing 1 will be splashed, and the existence of the bearing bush 14, the bearing 6 and several oil baffle plates 13 can greatly reduce the lubricating oil entering the installation groove 12.

There are two pairs of oil seal parts 9, both of which are covered between the box body 1 and the outer wall of the box cover 11. The oil seal parts 19 are covered outside the similar installation groove 12, and are used for sealing oil at the installation groove 12;

One end of oil seal part one 9 covered with oil seal part two 10 is an open end, and the other end of oil seal part one 9 is a closed end. Oil seal part one 9 includes a first seal cover 91, a first seal ring 92, a spring 93 and an inner seal Ring 94, the first sealing cover 91 covers the place between the box body 1 and the outer wall of the box cover 11, the inside of the first sealing ring 92 is hollow and embedded in the first sealing cover 91, and the spring 93 is provided with several pieces and is fixed on In the first sealing ring 92, at least two inner sealing rings 94 are provided and are welded to the inner side of the first sealing ring 92;

The outer wall near both ends of the bearing 6 has at least two annular grooves matching the inner sealing ring 94, the inner sealing ring 94 is installed in the adjacent annular groove, and the first sealing ring 92 is in contact with the adjacent oil baffle plate 13 ;

Please refer to Fig. 2-4, the setting of the first sealing ring 92 not only fills the gap between the first sealing cover 91 and the adjacent oil baffle 13, but also strengthens the gap between the first sealing cover 91 and the adjacent oil baffle 13. It also fills the gap between the first sealing cover 91 and the bearing 6, so that the sealing between the first sealing cover 91 and the bearing 6 is excellent, and the existence of the first sealing ring 92 can effectively avoid the installation groove 12 The lubricating oil inside enters into the first sealing cover 91.

Further, the several springs 93 in the first seal ring 92 are in a compressed state in the initial state, and the several springs 93 have elastic force on the first seal ring 92, so that the first seal ring 92 fits the oil baffle plate 13, the bearing 6 and the first sealing cover 91, when the bearing 6 rotates, there will be a slight radial deviation, the bearing 6 will squeeze the side of the first sealing ring 92, the first sealing ring 92 will undergo elastic deformation, and at the same time compress the first sealing ring 92, the spring 93 at the stressed place, and stretches the spring 93 at the rest of the first sealing ring 92, under the use of several springs 93, the first sealing ring 92 is always attached to the bearing 6, and the first sealing cover 91 and the first sealing cover 91 are strengthened. Sealing between bearings 6.

Specifically, under the cooperative use of the inner seal ring 94 and the annular groove, the first seal ring 92 is more tightly connected to the bearing 6, which can effectively block the lubricating oil between the bearing 6 and the first seal ring 92, and strengthen the first seal ring 92. The tightness of the seal ring 92, the use of the oil seal part-9 greatly strengthens the oil sealing strength between the bearing 6 and the installation groove 12, and effectively prevents the lubricating oil in the casing 1 from flowing out.

Two sets of oil seal parts 10 are provided and are respectively covered on the outer side of each pair of oil seal parts one 9 for sealing oil at the installation groove 12;

The oil seal part 2 10 includes a second seal cover 101 and a second seal ring 102, the second seal cover 101 is set on the outside of the adjacent bearing 6, and the second seal cover 101 is covered on the outside of the adjacent first seal cover 91, the second seal The ring 102 is installed inside the second sealing cover 101, and the bearing 6 is in contact with the second sealing ring 102;

Please continue to refer to Figure 2-4, the joint use of oil seal part 19 and oil seal part 2 10 is to double seal the gap between the end of the bearing 6 extending out of the box body 1 and the gap between the box body 1 and the box cover 11 to prevent The lubricating oil in the box body 1 flows out from the gap. Since the second sealing ring 102 in the second sealing cover 101 is in contact with the bearing 6, the second sealing ring 102 strengthens the contact between the second sealing cover 101 and the bearing 6. For tightness, the oil seal component 2 10 further strengthens the oil sealing strength between the bearing 6 and the installation groove 12 .

Air pumping parts 2 are provided with four groups and are all installed on the outer wall of case cover 11, and are used for oil seal part 9 to inflate or deflate;

The air extraction component 2 includes an air extraction pump 21 and a hose 22. The air extraction pump 21 is fixed on the outer wall of the tank cover 11. The hose 22 is embedded in the bottom of the air extraction pump 21. The end of the hose 22 passes through the first sealing cover 91 and the first sealing ring in turn. The outer wall of 92 communicates with the inside of the first sealing ring 92;

The outer wall of the hose 22 is equipped with an electric gas valve 23, and the outer wall of the box cover 11 is equipped with four air pressure sensors 3. The outside of the air pressure sensor 3 is connected with an induction head through a wire. Below 23, an alarm 8 is fixed on the top of the case cover 11;

Please continue to refer to Figure 1 and Figure 4-6, there is a PLC controller on the box cover 11, and the air pump 21, the air pressure sensor 3 and the alarm 8 are all electrically connected to the PLC controller, because the outside of the air pressure sensor 3 is connected by wires There is an induction head, and the induction head is inserted into the adjacent hose 22 and is located below the electric air valve 23, so the air pressure between the hose 22 and the inside of the first sealing ring 92 can be tested through the air pressure sensor 3, which can be measured by the air pressure sensor 3 The air pressure value inside the first sealing ring 92 when the gearbox is at rest at normal temperature can be used as the air pressure value of the air pressure sensor 3 preset by the PLC controller.

As we all know, in a closed state, the temperature increases and the gas pressure increases; conversely, the gas pressure decreases. When the gearbox is in operation, the bearing 6 will rub against the oil baffle plate 13, the bearing bush 14, the first sealing cover 91 and the inner wall of the first sealing ring 92, thereby causing the temperature between the first sealing ring 92 and the inside of the hose 22 to rise. High, at this time, the air pressure sensor 3 will measure that the air pressure is greater than the preset air pressure value, and the air pressure sensor 3 will transmit the air pressure information to the PLC controller, and the PLC controller will start the electric air valve 23, so that the electric air valve 23 is opened, and the soft The air in the pipe 22 will be released by the suction pump 21, thereby reducing the air pressure between the first sealing ring 92 and the inside of the hose 22. When the air pressure measured by the air pressure sensor 3 is equal to the preset air pressure value, the PLC The controller will close the electric gas valve 23 to stop deflation, which can effectively prevent the problem of explosion due to excessive air pressure in the first sealing ring 92 .

When the temperature in the first sealing ring 92 drops, the air pressure in the first sealing ring 92 will also drop accordingly. At this time, the air pressure value obtained by the PLC controller is less than the preset air pressure value, and then the PLC controller will start simultaneously The air suction pump 21 and the electric air valve 23, when the air suction pump 21 works, the outside air will be sucked into the hose 22, and the hose 22 will deliver the air to the first sealing ring 92, thereby increasing the first sealing The air pressure in the circle 92, when the air pressure value obtained by the PLC controller is equal to the preset air pressure value, the PLC controller will close the air pump 21 and the electric air valve 23 at the same time.

When the air pressure value transmitted by the air pressure sensor 3 to the PLC controller is a constant value and is less than the preset air pressure value for 3-5 seconds, the PLC controller will start the alarm 8, and the alarm 8 will sound an alarm to prompt the staff to seal the seal first. The ring 92 is damaged or the electric valve 23 breaks down, so that the staff can check the first sealing ring 92 and the electric valve 23 in time; when the air pressure value transmitted to the PLC controller by the air pressure sensor 3 is a constant value and lasts for 3-5 seconds When the air pressure value is preset, the PLC controller will start the alarm 8 and send an alarm sound, prompting the staff that the first sealing ring 92 is damaged, the air pump 21 or the electric gas valve 23 is out of order, and the staff can check the first sealing ring 92 , air pump 21 and electric gas valve 23 are checked one by one.

In summary, under the use of the air pumping part 2, the air pressure sensor 3, the alarm 8 and the PLC controller, first, it is convenient to inflate or deflate it according to the change of the air pressure in the first sealing ring 92, so that the second The air pressure value in the first sealing ring 92 is kept at the preset air pressure value. On the one hand, the first sealing ring 92 can be attached to the bearing 6 at all times, effectively preventing the lubricating oil in the box 1 from flowing out. On the other hand, the first sealing ring can be adjusted. The air pressure in the ring 92 is conducive to prolonging the service life of the first sealing ring 92; the second, it can remind the staff in time that the first sealing ring 92 is damaged, the air pump 21 or the electric gas valve 23 break down, so that the staff can timely correct The first sealing ring 92, the air suction pump 21 and the electric gas valve 23 are checked one by one.

Claims (8)

1. A gear box with an oil leakage prevention structure, characterized in that it comprises: The box body (1) is covered with a box cover (11) on the top, and the inner sides of the box body (1) and the box cover (11) are horizontally penetrated with two pairs of dislocation-distributed installation grooves (12); One oil seal part (9) is provided with two pairs and both are covered between the outer wall of the box body (1) and the box cover (11), and the one oil seal part (9) is covered in the similar installation groove (12) Externally, it is used for sealing oil at the installation groove (12); Oil seal part two (10), which is provided with two groups and is respectively covered on the outer side of each pair of said oil seal part one (9), is used for sealing oil at the installation groove (12); Air extraction parts (2) are provided with four groups and are all installed on the outer wall of the case cover (11), and are used for oil seal part one (9) to inflate or deflate. 2. The gear box with an oil leakage prevention structure according to claim 1, characterized in that, the end of the oil seal part one (9) covered with the oil seal part two (10) is an open end, and the oil seal part The other end of component one (9) is a closed end, and the oil seal component one (9) includes: The first sealing cover (91), covers the place between the casing (1) and the outer wall of the casing cover (11); The first sealing ring (92) is hollow inside and embedded in the first sealing cover (91); Springs (93) are provided with several springs and are all fixed in the first sealing ring (92); There are at least two inner sealing rings (94) which are welded inside the first sealing ring (92). 3. The gear box with oil leakage prevention structure according to claim 2, characterized in that, bearing bushes (14) and several oil baffle plates (13) are fixed in the installation grooves (12), and the The oil baffle (13) is located on the outer side of the bearing bushes (14), and bearings (6) are slidingly connected between the two opposite bearing bushes (14), and the outer walls of the bearings (6) near both ends have at least two an annular groove matched with the inner seal ring (94), the inner seal ring (94) is installed in the adjacent said annular groove, the first seal ring (92) and the adjacent said oil baffle ( 13) It is in contact with the bearing (6). 4. The gear box with an oil leakage prevention structure according to claim 3, characterized in that, a main gear (5) and an auxiliary gear (7) are respectively installed on the outside of the two bearings (6), and the main gear The gear (5) is engaged with the auxiliary gear (7), and the diameter of the main gear (5) is larger than that of the auxiliary gear (7). 5. The gear box with an oil leakage prevention structure according to claim 4, characterized in that, said oil seal part two (10) comprises: The second sealing cover (101) is sleeved on the outside of the adjacent bearing (6) and in contact with it, and the second sealing cover (101) is covered on the outside of the adjacent first sealing cover (91); The second sealing ring (102) is installed inside the second sealing cover (101), and the bearing (6) is in contact with the second sealing ring (102). 6. The gear box with an oil leakage prevention structure according to claim 1, characterized in that, the air extraction component (2) comprises: The air pump (21) is fixed on the outer wall of the case cover (11); The hose (22) is embedded in the bottom of the air suction pump (21), and the end of the hose (22) passes through the outer wall of the first sealing cover (91) and the first sealing ring (92) in sequence and connects with the first sealing ring (92) ) are connected internally. 7. The gear box with an oil leakage prevention structure according to claim 6, characterized in that, the outer wall of the hose (22) is equipped with an electric gas valve (23), and the outer wall of the box cover (11) is installed There are four air pressure sensors (3), and the outside of the air pressure sensor (3) is connected with an inductive head through a wire, and the inductive head is inserted into the similar flexible pipe (22) and is located below the electric gas valve (23), An alarm (8) is fixed on the top of the lid (11). 8. The gear box with an oil leakage prevention structure according to claim 1, characterized in that, a support base (4) is installed at the bottom of the box body (1) for supporting the box body (1).

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