Gear box with combined sealing terminal structure

Abstract

The utility model relates to the technical field of gear boxes, in particular to a gear box with a combined sealing terminal structure, which comprises a box body and a terminal sealing cover, the terminal sealing cover is mounted at the front end of the box body, and a terminal shaft reserved hole is arranged in the middle of the terminal sealing cover. And four groups of spring grooves are formed in positions, close to the inner wall of the terminal shaft preformed hole, of the terminal sealing cover. According to the gearbox with the combined sealing terminal structure, the protective shaft sleeves, the sealing springs and the sealing balls are arranged, when the terminal sealing covers are closed, the output terminal shaft can abut against the inner walls of the protective shaft sleeves and eject the two sets of protective shaft sleeves upwards or downwards, and under the action of the sealing springs, the protective shaft sleeves move towards the spring grooves; when the output terminal shaft and the protective shaft sleeve are tightly attached in place, the protective shaft sleeve clamps the output terminal shaft again under the springback effect of the sealing spring, the dustproof and moistureproof sealing effect is achieved, and the problem of loss caused by the fact that the output terminal shaft is exposed outside is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a gear box with a combined sealing terminal structure. Background Art

[0002] Gearboxes are important components in mechanical transmission systems and are widely used in various industrial equipment, vehicle transmissions and mechanical transmission systems. The main function is to transfer the power of the motor or engine to the working parts through the meshing of gears, while changing the transmission ratio to achieve deceleration or acceleration. In order to ensure the normal operation of the gearbox, it is necessary to prevent external dust and moisture from entering the gearbox.

[0003] The existing gearboxes on the market currently have some defects in the sealing structure. Most traditional gearboxes use simple sealing rings or sealing gaskets for sealing. When in use, the box body is opened to expose the gear terminal output shaft to the outside. When not in use, the gear terminal output shaft is still exposed to the outside. External dust and moisture enter the gearbox, which will accelerate the wear of gears and bearings. The output terminal shaft is exposed to the outside, which causes large losses, poor sealing effect, and cannot prevent moisture and dust.

[0004] Therefore, there is an urgent need for a gearbox with a combined sealed terminal structure to solve the technical defects proposed in the above technology. Utility Model Content

[0005] The utility model aims to provide a gear box with a combined sealed terminal structure to solve the problems of poor sealing effect and large loss of the output terminal shaft exposed to the outside proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gearbox with a combined sealed terminal structure, comprising a box body and a terminal sealing cover, the terminal sealing cover is installed at the front end of the box body, a terminal shaft reserved hole is opened in the middle position of the terminal sealing cover, and four groups of spring grooves are opened on the inner wall of the terminal shaft reserved hole near the terminal sealing cover, and ball grooves are processed at the ends of the spring grooves, sealing springs are fixed in the spring grooves, sealing balls are welded at the ends of the sealing springs, the sealing balls are located in the ball grooves, and the sealing balls are welded with protective sleeves.

[0007] Furthermore, the protective sleeves are two groups of semi-arc plates that are symmetrical in upper and lower directions, and the protective sleeves match the size of the output terminal shaft.

[0008] Preferably, a group of rod grooves are respectively opened at the upper and lower ends of the inner wall of the terminal sealing cover, a pull rod is embedded and fixed in the rod groove, and a moving block is inserted at the other end of the pull rod, and a fixed plate is fixedly connected at the upper and lower ends of the outer wall of the box body, and a rack is movably connected in the fixed plate, the rack and the moving block are fixedly connected, and the fixed plate and the box body are fixedly connected by fixing bolts.

[0009] Furthermore, a threaded hole is provided inside the fixing plate, an adjusting gear is threadedly assembled in the threaded hole, a locking bolt is fixedly connected to the top of the adjusting gear, and the adjusting gear is meshingly connected to the rack.

[0010] Furthermore, one side edge of the protective sleeve close to the output terminal shaft of the box body is rounded.

[0011] Preferably, an oil inlet is opened in the upper inner half of the terminal sealing cover, the bottom end of the oil inlet is located between two sets of spring grooves, an oil supply tank is fixed to the top of the terminal sealing cover, an oil pump is installed at the front end of the oil supply tank, and the output end of the oil pump is connected to the top of the oil inlet.

[0012] Furthermore, a slot is welded on the outer wall of the lower half of the terminal sealing cover, an oil receiving box is placed in the slot, an oil outlet is connected to the oil receiving box, and the oil outlet is connected upward to between the two groups of spring slots.

[0013] Furthermore, a through hole is provided in the middle of the protective sleeve, and the position of the through hole corresponds to the oil circuit.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the gearbox with the combined sealed terminal structure not only realizes the dust-proof and moisture-proof sealing effect, reduces the loss of the output terminal shaft exposed to the outside, realizes auxiliary installation, has strong compactness, avoids the oil circuit dislocation or damage to the output terminal shaft caused by inadequate installation, but also realizes lubrication under the condition of sealing protection, collects excess lubricating oil, and has better terminal shaft lubrication function;

[0015] (1) By providing a protective sleeve, a sealing spring, and a sealing ball, when the terminal sealing cover is closed, two sets of protective sleeves are covered on the outside of the output terminal shaft. When the protective sleeves are in contact with the output terminal shaft, due to the rounded corner processing of the edges, the output terminal shaft can support the inner wall of the protective sleeve and push the two sets of protective sleeves upward or downward. Under the action of the sealing spring, the protective sleeve moves toward the spring groove, and the sealing ball is stuck in the ball groove. When the output terminal shaft and the protective sleeve are tightly fitted in place, under the rebound action of the sealing spring, the protective sleeve re-clamps the output terminal shaft, which has a better sealing structure for the output terminal shaft, has a dust-proof and moisture-proof sealing effect, and reduces the loss of the output terminal shaft exposed to the outside;

[0016] (2) By providing a terminal shaft reserved hole, a positioning bolt, an adjusting gear, a rack, and a moving block, the gear box is equipped with an openable terminal sealing cover at the front end, and a terminal shaft reserved hole is provided in the terminal sealing cover. Two sets of protective sleeves at the terminal shaft reserved hole match the size of the output terminal shaft. When the box body is not in use, the locking bolt is turned, and the locking bolt drives the adjusting gear to rotate, pushing the rack to move in the fixed plate, and pulling the moving block to move, thereby closing the terminal sealing cover and the box body. When closed in place, the two sets of protective sleeves cover the outside of the output terminal shaft to form protection, thereby realizing auxiliary installation, strong compactness, and avoiding oil circuit dislocation or damage to the output terminal shaft caused by improper installation;

[0017] (3) An oil pump, an oil inlet, an oil tank, and an oil outlet are provided. The oil inlet is provided at the upper inner portion of the terminal sealing cover. When the terminal sealing cover is closed, the lubricating oil in the oil tank can be pumped out by the oil pump and flows downward into the protective sleeve and drips onto the output terminal shaft. Excess lubricating oil flows along the oil outlet to the oil receiving tank. Lubrication can be achieved under sealed protection and excess lubricating oil can be collected, thereby providing a better terminal shaft lubrication function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the protective shaft sleeve structure when viewed from above of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view structure of the fixing plate of the utility model;

[0021] Figure 4 It is a front view structural schematic diagram of the terminal sealing cover of the utility model.

[0022] In the figure: 1. Box body; 2. Fixed plate; 3. Fixed bolt; 4. Locking bolt; 5. Rack; 6. Moving block; 7. Pull rod; 8. Rod groove; 9. Oil supply tank; 10. Oil pump; 11. Oil inlet; 12. Spring groove; 13. Sealing spring; 14. Sealing ball; 15. Terminal shaft reserved hole; 16. Protective sleeve; 17. Ball groove; 18. Oil outlet; 19. Oil connection tank; 20. Card slot; 21. Terminal sealing cover; 22. Threaded hole; 23. Adjusting gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4 A gearbox with a combined sealed terminal structure comprises a box body 1 and a terminal sealing cover 21, wherein the terminal sealing cover 21 is installed at the front end of the box body 1, wherein a terminal shaft reserved hole 15 is provided in the middle of the terminal sealing cover 21, wherein four groups of spring grooves 12 are provided at the inner wall of the terminal sealing cover 21 near the terminal shaft reserved hole 15, wherein a ball groove 17 is processed at the end of the spring groove 12, wherein sealing springs 13 are fixed in the spring grooves 12, wherein sealing balls 14 are welded at the ends of the sealing springs 13, wherein the sealing balls 14 are located in the ball grooves 17, wherein the sealing balls 14 are welded with protective sleeves 16, wherein the protective sleeves 16 are two groups of semi-arc plates symmetrical up and down, and wherein the protective sleeves 16 match the size of the output terminal shaft;

[0025] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, when the terminal sealing cover 21 is closed, the two sets of protective sleeves 16 are wrapped around the outside of the output terminal shaft. When they are in contact with the output terminal shaft, due to the rounded corners of their edges, the output terminal shaft can support the inner wall of the protective sleeves 16 and push the two sets of protective sleeves 16 upward or downward. Under the action of the sealing spring 13, the protective sleeves 16 move toward the spring groove 12. At this time, the sealing ball 14 is stuck in the ball groove 17. When the output terminal shaft and the protective sleeves 16 are tightly fitted in place, under the rebound action of the sealing spring 13, the protective sleeves 16 re-clamp the output terminal shaft.

[0026] Embodiment 2: A group of rod grooves 8 are respectively provided at the upper and lower ends of the inner wall of the terminal sealing cover 21, and a pull rod 7 is embedded and fixed in the rod groove 8, and a moving block 6 is inserted at the other end of the pull rod 7. A fixed plate 2 is fixedly connected to the upper and lower ends of the outer wall of the box body 1, and a rack 5 is movably connected in the fixed plate 2. The rack 5 and the moving block 6 are fixedly connected. The fixed plate 2 and the box body 1 are fixedly connected by a fixing bolt 3. A threaded hole 22 is provided inside the fixed plate 2, and an adjusting gear 23 is threadedly assembled in the threaded hole 22. A locking bolt 4 is fixedly connected to the top of the adjusting gear 23, and the adjusting gear 23 is meshed with the rack 5. The edge of one side of the protective sleeve 16 close to the output terminal shaft of the box body 1 is rounded;

[0027] Specifically, Figure 1 , Figure 3 and Figure 4As shown, the gear box is equipped with an openable terminal sealing cover 21 at the front end, and a terminal shaft reserved hole 15 is provided in the terminal sealing cover 21. The two sets of protective sleeves 16 at the terminal shaft reserved hole 15 match the size of the output terminal shaft. When the box body 1 is not in use, the locking bolt 4 is rotated, and the locking bolt 4 drives the adjusting gear 23 to rotate, pushing the rack 5 to move in the fixed plate 2, and pulling the moving block 6 to move, thereby closing the terminal sealing cover 21 and the box body 1. When closed in place, the two sets of protective sleeves 16 cover the outside of the output terminal shaft to form protection.

[0028] Embodiment 3: An oil inlet 11 is provided in the upper part of the terminal sealing cover 21, and the bottom end of the oil inlet 11 is located between the two groups of spring grooves 12. An oil supply tank 9 is fixed to the top of the terminal sealing cover 21, and an oil pump 10 is installed at the front end of the oil supply tank 9. The output end of the oil pump 10 is connected to the top of the oil inlet 11. A card slot 20 is welded on the outer wall of the lower half of the terminal sealing cover 21, and an oil receiving tank 19 is placed in the card slot 20. The oil receiving tank 19 is connected to the oil outlet 18, and the oil outlet 18 is connected upward to between the two groups of spring grooves 12. A through hole is provided in the middle position of the protective sleeve 16, and the position of the through hole corresponds to the oil circuit;

[0029] Specifically, Figure 1 and Figure 4 As shown, an oil inlet passage 11 is provided in the upper inner portion of the terminal sealing cover 21. When the terminal sealing cover 21 is closed, the lubricating oil in the oil tank 9 can be pumped out by the oil pump 10, and flows downward into the protective sleeve 16 and drips onto the output terminal shaft. Excess lubricating oil flows along the oil outlet passage 18 into the oil receiving tank 19. Lubrication can be achieved and excess lubricating oil can be collected under sealed protection.

[0030] Working principle: The gear box is equipped with an openable terminal sealing cover 21 at the front end, and a terminal shaft reserved hole 15 is set in the terminal sealing cover 21. The two sets of protective sleeves 16 at the terminal shaft reserved hole 15 match the size of the output terminal shaft. When the box body 1 is not in use, turn the locking bolt 4, the locking bolt 4 drives the adjusting gear 23 to rotate, pushes the rack 5 to move in the fixed plate 2, and pulls the moving block 6 to move, so as to close the terminal sealing cover 21 and the box body 1. When the terminal sealing cover 21 is closed, the two sets of protective sleeves 16 are covered on the outside of the output terminal shaft. When it contacts the output terminal shaft, due to the rounded processing of its edge, the output terminal shaft can support the inner wall of the protective sleeve 16 and the two sets of protective sleeves 16 is pushed up or down, and under the action of the sealing spring 13, the protective sleeve 16 moves toward the spring groove 12. At this time, the sealing ball 14 is stuck in the ball groove 17. When the output terminal shaft and the protective sleeve 16 are tightly fitted in place, under the rebound action of the sealing spring 13, the protective sleeve 16 clamps the output terminal shaft again. An oil inlet path 11 is arranged in the upper part of the terminal sealing cover 21. When the terminal sealing cover 21 is closed, the lubricating oil in the oil tank 9 can also be pumped out by the oil pump 10, and flow downward into the protective sleeve 16 and drip on the output terminal shaft. The excess lubricating oil flows along the oil outlet path 18 to the oil receiving box 19. Lubrication can be achieved and excess lubricating oil can be collected under the condition of sealing protection.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A gearbox with a combined sealed terminal structure, comprising a box body (1) and a terminal sealing cover (21), characterized in that: A terminal sealing cover (21) is installed at the front end of the box body (1), a terminal shaft reserved hole (15) is opened in the middle position of the terminal sealing cover (21), four groups of spring grooves (12) are opened near the inner wall of the terminal shaft reserved hole (15) of the terminal sealing cover (21), the ends of the spring grooves (12) are processed with ball grooves (17), sealing springs (13) are fixed in the spring grooves (12), sealing balls (14) are welded to the ends of the sealing springs (13), the sealing balls (14) are located in the ball grooves (17), and the sealing balls (14) are welded with protective sleeves (16).

2. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: The protective shaft sleeve (16) is composed of two groups of upper and lower symmetrical semi-arc plates, and the protective shaft sleeve (16) matches the size of the output terminal shaft.

3. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: A group of rod grooves (8) are respectively provided at the upper and lower ends of the inner wall of the terminal sealing cover (21), a pull rod (7) is embedded and fixed in the rod groove (8), and a moving block (6) is inserted at the other end of the pull rod (7). A fixed plate (2) is respectively fixedly connected to the upper and lower ends of the outer wall of the box body (1), and a rack (5) is movably connected in the fixed plate (2). The rack (5) and the moving block (6) are fixedly connected, and the fixed plate (2) and the box body (1) are fixedly connected by fixing bolts (3).

4. The gearbox with a combined sealed terminal structure according to claim 3, characterized in that: A threaded hole (22) is provided inside the fixing plate (2), an adjusting gear (23) is threadedly mounted inside the threaded hole (22), a locking bolt (4) is fixedly connected to the top of the adjusting gear (23), and the adjusting gear (23) is meshedly connected to the rack (5).

5. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: The edge of one side of the protective sleeve (16) close to the output terminal shaft of the box body (1) is rounded.

6. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: An oil inlet passage (11) is provided in the upper inner half of the terminal sealing cover (21), the bottom end of the oil inlet passage (11) is located between two sets of spring grooves (12), an oil supply box (9) is fixed to the top end of the terminal sealing cover (21), an oil pump (10) is installed at the front end of the oil supply box (9), and the output end of the oil pump (10) is connected to the top end of the oil inlet passage (11).

7. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: A slot (20) is welded on the outer wall of the lower half of the terminal sealing cover (21), an oil receiving box (19) is placed in the slot (20), an oil outlet path (18) is connected to the oil receiving box (19), and the oil outlet path (18) is connected upward to between the two groups of spring slots (12).

8. The gearbox with a combined sealed terminal structure according to claim 1, characterized in that: A through hole is arranged at a middle position inside the protective shaft sleeve (16), and the position of the through hole corresponds to the oil circuit.

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