CN219727931U - Ratchet compensation device capable of being installed obliquely - Google Patents

Abstract

The utility model provides a ratchet compensation device capable of being obliquely arranged, which comprises a ratchet body, wherein a ratchet shaft penetrates through the ratchet body, one end of the ratchet shaft is provided with a boss, a tapered roller bearing is arranged between the boss and the ratchet body, the other end of the ratchet shaft is fixedly provided with another tapered roller bearing through a round nut, both ends of the ratchet body are fixedly provided with end covers through screws, and an opening for penetrating out of the ratchet shaft is arranged in the middle of the end covers. The ratchet shaft supports the ratchet body through the tapered roller bearing, and can bear larger axial force due to the self structure of the tapered roller bearing, so that the abrasion of the bearing can be reduced when the ratchet compensator is obliquely installed, and the service life and the ratchet transmission efficiency are improved.

Description

Ratchet compensation device capable of being installed obliquely

Technical Field

The utility model belongs to the technical field of railway contact networks, and particularly relates to a ratchet compensation device capable of being installed in an inclined mode.

Background

The ratchet compensation device is mainly used for compensating and adjusting tension of a cable at the anchor of an electrified railway contact net and a flexible suspension of urban rail transit, is an important device, is installed in a horizontal mode, and is installed in a tunnel in another inclined mode.

The utility model provides a tilting mount seals maintenance-free ratchet compensation arrangement, including ratchet body and ratchet shaft, this ratchet body axle center department has the axle center through-hole, this ratchet shaft passes this axle center through-hole, the both ends of axle center through-hole are equipped with the radial annular holding tank that is greater than this axle center through-hole radius, the both ends portion of this ratchet shaft has outwards extends and the radius is less than the spindle nose of this ratchet shaft, fixed cover is equipped with the retaining ring on this 2 spindle nose, the interior terminal surface of this 2 retaining rings is relative with the vertical side of this holding tank, the circumference surface of this 2 retaining rings and the circumference inner wall clearance fit of this holding tank, simultaneously, be equipped with self-lubricating slide bearing between the both ends portion of this axle center through-hole and the both ends portion of this ratchet shaft, be equipped with self-lubricating end face bearing between the interior terminal surface of this 2 retaining rings and the vertical side of this holding tank, the advantage is: the sealing performance is better, can prevent that outside impurity from getting into the bearing structure inside.

The ratchet wheel compensation device designed by the scheme can be obliquely installed, but the bearing cannot bear larger axial force and is easy to wear; the self-lubricating bearing structure is adopted, so that the ratchet transmission efficiency is lower, and the transmission efficiency is far lower than that of a rolling bearing structure particularly in inclined installation; and the self-lubricating bearing is adopted, so that the tightness is ensured, but under the state of abrasion, no lubrication oil is supplemented, and fragments generated by abrasion can influence the service life of the self-lubricating bearing and reduce the ratchet transmission efficiency.

Disclosure of Invention

Therefore, in order to solve the technical problems, the utility model provides a ratchet compensation device capable of being installed obliquely, so as to solve the problems that the bearing cannot bear larger axial force and is easy to wear when the existing ratchet compensation device is installed obliquely; the self-lubricating bearing structure is adopted, so that the ratchet transmission efficiency is lower, and the transmission efficiency is far lower than that of a rolling bearing structure particularly in inclined installation; and the self-lubricating bearing is adopted, so that the tightness is ensured, but under the state of abrasion, no lubrication oil is supplemented, and the problem that the service life of the self-lubricating bearing is influenced and the ratchet transmission efficiency is reduced due to fragments generated by abrasion is solved.

The technical scheme adopted by the utility model is as follows:

the utility model provides a ratchet compensation arrangement of tilting installation, includes the ratchet body, has passed the ratchet shaft in the inside of ratchet body, the one end of ratchet shaft is equipped with the boss, installs tapered roller bearing between boss and ratchet body, the other end of ratchet shaft is fixed with another tapered roller bearing through round nut, the both ends of ratchet body all are equipped with the end cover through the screw fixation, are equipped with the trompil that is used for wearing out the ratchet shaft in the centre of end cover.

Further, an oil seal for blocking leakage of lubricating oil is arranged at the joint of one side of the end cover and the ratchet shaft, and a sealing gasket for sealing is further arranged at the joint between the end cover and the ratchet body, so that the tightness in the ratchet body is improved.

Further, bearing holes for holding tapered roller bearings are provided in opposition in the ratchet body, so that the mounting positions of the tapered roller bearings can be defined.

Further, a stop washer for locking the round nut is arranged between the tapered roller bearing and the round nut, and the stop washer locking structure is convenient for adjusting and controlling axial play during bearing installation.

Further, the stop washer comprises a bending limb and stop limbs, the bending limb is clamped in a groove formed in the ratchet shaft, a plurality of stop limbs are arranged on the outer side of the stop washer in a surrounding mode, after the round nut is adjusted to have a bearing clearance to a proper value, one stop limb at a corresponding position is clamped in a clamping groove on one side of the round nut, and the bending limb is matched with the stop limb to lock the round nut and prevent the round nut from rotating.

Further, both ends of the ratchet shaft are respectively provided with an oil way communicated with the inside of the ratchet body, one end of the oil way is connected with a straight-through oil cup, and lubricating grease can be injected into the tapered roller bearing through the oil cup and the oil way.

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

1. the ratchet shaft supports the ratchet body through the tapered roller bearing, and can bear larger axial force due to the self structure of the tapered roller bearing, so that the abrasion of the bearing can be reduced when the ratchet compensator is obliquely installed, and the service life and the ratchet transmission efficiency are improved.

2. The utility model adopts a locking structure with the matched round nut and the stop washer, is convenient for installing the tapered roller bearing, adjusts the bearing clearance between the round nut and the bearing by rotating, and fixes the round nut by bending the stop limb corresponding to the grooving position of the round nut after the bearing clearance is adjusted to a proper value.

3. According to the utility model, lubrication can be injected into the position of the bearing through the oil paths arranged at the two ends of the ratchet shaft, an oil seal is arranged at the joint of one side of the end cover and the ratchet shaft, and a sealing gasket is also arranged at the joint between the end cover and the ratchet body, so that the tightness in the ratchet body is improved, and the leakage of lubricating grease, water and foreign matters entering the bearing are prevented.

Drawings

FIG. 1 is a schematic view of the installation structure in the ratchet body of the present utility model.

Fig. 2 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

Fig. 3 is an enlarged schematic view of the structure of fig. 1B according to the present utility model.

Fig. 4 is a schematic view of the structure of the stop washer of the present utility model.

Fig. 5 is a schematic view of the structure of the stopper limb of the present utility model.

Fig. 6 is a schematic structural view of the round nut of the present utility model.

Fig. 7 is a schematic view of the structure of the ratchet shaft of the present utility model.

FIG. 8 is a schematic view of the cross-sectional structure A-A of FIG. 7 in accordance with the present utility model.

In the figure:

the ratchet wheel comprises a 1-ratchet wheel body, a 2-ratchet wheel shaft, a 21-boss, a 22-oil way, a 23-slot, a 3-end cover 4-oil seal, a 5-screw, a 6-tapered roller bearing, a 7-round nut, an 8-stop washer, 81-bent limbs, 82-stop limbs and 9-through oil cups.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution of the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As shown in the attached drawings 1-3, the ratchet compensation device capable of being installed in an inclined mode comprises a ratchet body 1, wherein a ratchet shaft 2 penetrates through the ratchet body 1, one end of the ratchet shaft 2 is provided with a boss 21, a tapered roller bearing 6 is installed between the boss 21 and the ratchet body 1, the other end of the ratchet shaft 2 is fixedly provided with another tapered roller bearing 6 through a round nut 7, two ends of the ratchet body 1 are fixedly provided with end covers 3 through bolts 5, an opening for penetrating out of the ratchet shaft 2 is formed in the middle of the end covers 3, an oil seal 4 for blocking leakage of lubricating oil is arranged at the joint of one side of the end covers 3 and the ratchet shaft 2, bearing holes for clamping the tapered roller bearing 6 are oppositely arranged in the ratchet body 1, and a sealing gasket for sealing is arranged at the joint between the end covers 3 and the ratchet body 1.

As shown in fig. 3-5, a stop washer 8 for locking the round nut 7 is arranged between the tapered roller bearing 6 and the round nut 7, the stop washer 8 comprises a bending limb 81 and a stop limb 82, the bending limb 81 is clamped in a groove 23 formed in the ratchet shaft 2, the stop limb 82 is arranged on the outer side of the stop washer 8 in a surrounding mode, and the stop washer can be clamped in a clamping groove on one side of the round nut 7 after bending.

As shown in fig. 7, two ends of the ratchet shaft 2 are respectively provided with an oil path 22 for communicating the ratchet body 1, and one end of the oil path 22 is connected with a straight-through oil cup 9.

The mounting process of the tapered roller bearing in this embodiment is as follows:

1. the outer rings of the two tapered roller bearings 6 are arranged in bearing holes on the left side and the right side of the ratchet body 1 according to the figure 1;

2. the inner ring of one tapered roller bearing 6 is arranged on the inner side of a boss 21 in the ratchet shaft 2;

3. then the ratchet shaft 2 provided with the inner ring of the tapered roller bearing 6 is penetrated into the hole of the ratchet body 1, so that the inner ring and the outer ring of the bearing are contacted;

4. the inner ring of the other tapered roller bearing 6 is arranged at the other end of the ratchet shaft 2, a stop washer 8 is arranged, a bending limb 81 of the inner ring of the stop washer 8 is arranged in a groove 23 on the ratchet shaft 2, a round nut 7 is screwed into the ratchet shaft 2 through threads, and a special screwing tool is used for screwing the round nut, so that the inner ring and the outer ring of the tapered roller bearing 6 at two sides are tightly attached;

5. the round nut 7 is retracted for a certain angle, the bearing clearance is adjusted to a proper value, after a stop limb 82 on the outer ring of the stop washer 8 is aligned with a clamping groove on the outer circle of the round nut 8, the stop limb 82 on the outer ring of the stop washer 8 is pulled up, and the round nut 8 is locked;

6. end covers 3 provided with oil seals 4 are fixed on two end faces of the ratchet body 1 through screws 5, and sealing gaskets are arranged between the end covers 3 and the ratchet body 1 so as to ensure sealing performance;

7. the straight-through oil cup 9 is respectively arranged on two end surfaces of the ratchet shaft 2 through threaded connection, and lubricating grease can be injected into the position of the inner bearing of the ratchet body 1 through the oil cup 9 and the oil way 22.

By utilizing the technical scheme of the utility model or under the inspired by the technical scheme of the utility model, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical scheme falls into the protection scope of the utility model.

Claims (8)

1. The utility model provides a ratchet compensation arrangement of tilting installation, includes ratchet body (1), passes in the inside of ratchet body (1) has ratchet shaft (2), its characterized in that: one end of the ratchet shaft (2) is provided with a boss (21), a tapered roller bearing (6) is arranged between the boss (21) and the ratchet body (1), the other end of the ratchet shaft (2) is fixed with another tapered roller bearing (6) through a round nut (7), two ends of the ratchet body (1) are both fixed with end covers (3) through screws (5), and an opening for penetrating out of the ratchet shaft (2) is arranged in the middle of the end covers (3).

2. The tiltably mounted ratchet compensation device of claim 1, wherein: an oil seal (4) for blocking the leakage of lubricating oil is arranged at the joint of one side of the end cover (3) and the ratchet shaft (2).

3. The tiltably mounted ratchet compensation device of claim 1, wherein: bearing holes for clamping tapered roller bearings (6) are oppositely arranged in the ratchet body (1).

4. The tiltably mounted ratchet compensation device of claim 1, wherein: a stop washer (8) for locking the round nut (7) is arranged between the tapered roller bearing (6) and the round nut (7).

5. The tiltably mounted ratchet compensation device of claim 4, wherein: the stop washer (8) comprises a bending limb (81) and a stop limb (82), and the bending limb (81) is clamped in a groove (23) formed in the ratchet shaft (2).

6. The tiltably mounted ratchet compensation device of claim 5, wherein: the stop limb (82) is arranged on the outer side of the stop washer (8) in a surrounding mode, and can be clamped into a clamping groove on one side of the round nut (7) after being bent.

7. The tiltably mounted ratchet compensation device of claim 1, wherein: both ends of the ratchet shaft (2) are respectively provided with an oil way (22) communicated with the inside of the ratchet body (1), and one end of the oil way (22) is connected with a straight-through oil cup (9).

8. The tiltably mounted ratchet compensation device of claim 1, wherein: the joint between the end cover (3) and the ratchet body (1) is provided with a sealing gasket which plays a role in sealing.