CN212712293U - Elevator hauler with prevent dead function of pivot card - Google Patents

Abstract

The utility model relates to an elevator hauler with prevent dead function of pivot card, including casing, pivot, driving sheave, rotor, stator, rear end cap, leading floating bearing and rearmounted location bearing. A first mounting hole is formed in the machine shell and used for mounting the front floating bearing. And a second mounting hole is formed in the rear end cover and used for mounting a rear positioning bearing. The front floating bearing is preferably a self-aligning needle bearing. The rear locating bearing is preferably a deep groove ball bearing. Through adopting above-mentioned technical scheme to set up, the assembly is accomplished to the fixed unsteady mode of one end of pivot borrowing to stop to cause unnecessary damage and card to die because the emergence of cold-expanding and cold-contracting phenomenon. In addition, the self-aligning needle roller bearing has good aligning performance, and can automatically compensate the coaxiality error generated by the deflection of the shaft or the deformation of the shell, thereby relaxing the requirements on the manufacturing precision and the assembling precision of parts to a certain extent and further reducing the manufacturing cost.

Description

Elevator hauler with prevent dead function of pivot card

Technical Field

The utility model belongs to the technical field of the elevator manufacturing technology and specifically relates to an elevator hauler with prevent dead function of pivot card.

Background

The traction machine is the heart of the elevator. In the actual working process, the traction machine is used for dragging the steel wire rope, and the steel wire rope is connected with the elevator car so as to drive the elevator car to move up and down in a reciprocating manner.

In the prior art, in order to eliminate the influence of temperature deformation on the rotating state of the spindle as much as possible, two self-aligning roller bearings are usually used for realizing the rotation support of the spindle. Therefore, the fixed end self-aligning roller bearing bears circumferential force and radial force at the same time, and the floating end self-aligning roller bearing only bears axial force. When two self-aligning roller bearings are installed, a certain radial clearance is required. Therefore, the radial offset of the rotating shaft and the axial displacement of the self-aligning roller bearing are both influenced by the initial clearance and the matching of the shaft hole, the rotating shaft is required to have good forming precision, and the self-aligning roller bearing and the bearing hole are required to have higher installation matching precision, so that the manufacturing difficulty and the cost can be inevitably increased. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural design is simple, effectively relaxs the part manufacturing tolerance requirement, and the assembly difficulty degree is little, and ensures that the pivot remains throughout in the elevator hauler that has of good stress state and prevents the dead function of pivot card.

In order to solve the technical problem, the utility model relates to an elevator hauler with prevent dead function of pivot card, it includes casing, pivot, driving sheave, rotor, stator, rear end cap, leading floating bearing and rearmounted location bearing. The rear end cover and the shell are buckled with each other to jointly form an assembly cavity. A first mounting hole penetrating along the front-back direction is formed in the machine shell and used for mounting the front floating bearing. And a second mounting hole penetrating along the front-rear direction is formed in the rear end cover so as to be used for mounting a rear positioning bearing. The rotating shaft sequentially passes through the front floating bearing, the assembly cavity and the rear positioning bearing. The traction sheave is arranged right ahead of the machine shell and detachably sleeved and fixed on the rotating shaft. The rotor and the stator are both arranged in the assembly cavity. The rotor is sleeved and fixed on the rotating shaft and cooperates with the stator to drive the rotating shaft to perform circumferential rotation motion around the central axis of the rotating shaft. The front floating bearing is preferably a self-aligning needle roller bearing, and the rear positioning bearing is preferably a deep groove ball bearing.

As a further improvement of the technical proposal of the utility model, a front shaft shoulder is arranged on the rotating shaft. The inner ring of the front floating bearing is sleeved on the rotating shaft in an interference fit mode, and the rear end face of the inner ring of the front floating bearing is abutted by the front shaft shoulder.

As the technical scheme of the utility model the further improvement, this elevator hauler with prevent dead function of pivot card still including bearing housing and retaining ring. The rotating shaft is also provided with a rear shaft shoulder and an annular limiting groove. A stop flange is arranged in the second mounting hole near the rear end part of the support. The inner ring of the rear positioning bearing is sleeved on the rotating shaft in a transition fit mode, the front end face and the rear end face of the rear positioning bearing are respectively abutted by a rear shaft shoulder and a check ring, and correspondingly, the check ring is arranged in the second mounting hole and clamped and fixed in the annular limiting groove. The outer ring of the rear positioning bearing is sleeved in the second mounting hole in a transition fit mode, the front end face and the rear end face of the rear positioning bearing are respectively abutted by the bearing end cover and the retaining flange, correspondingly, the bearing end cover is arranged in the assembly cavity and is detachably fixed on the rear end cover.

As the technical scheme of the utility model improve still further, just correspond to the outer lane of rearmounted location bearing, continue to extend backward by the back lateral wall of bearing end cover and have annular top to lean on the flange.

As a further improvement of the technical solution of the present invention, the elevator traction machine with the function of preventing the rotation shaft from being locked can be further provided with a wave-shaped ring. The wave ring is arranged in the second mounting hole and is always elastically propped against the position between the baffle flange and the outer ring of the rear positioning bearing.

Compare in elevator hauler of traditional project organization the utility model discloses an among the technical scheme disclosed, the assembly is accomplished to the fixed unsteady mode of one end is borrowed in the pivot to stop to cause unnecessary to damage because the emergence of expend with cold and contract with cold phenomenon. In addition, more importantly, the bearing outer circle of the self-aligning needle roller bearing is designed to be a convex spherical surface, and two polymer races matched with the design of the outer circle and the concave spherical surface are combined on a punching steel ring and installed on an outer ring. The self-aligning needle roller bearing is mainly used for bearing radial load, has good alignment, and can automatically compensate the coaxiality error generated by the deflection of the shaft and the deformation of the casing, thereby relaxing the requirements on the manufacturing precision and the assembling precision of parts to a certain extent, further reducing the manufacturing cost, and in addition, ensuring that the rotating shaft is maintained in a stable and high-efficiency running state for a long time.

Drawings

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

Fig. 1 is a schematic perspective view of an elevator traction machine having a function of preventing a rotating shaft from being locked.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is an enlarged view of part I of fig. 3.

Fig. 5 is a schematic perspective view of the casing in the elevator traction machine with the function of preventing the rotating shaft from being locked.

Fig. 6 is a schematic structural view of the middle rotating shaft of the elevator traction machine with the function of preventing the rotating shaft from being locked.

Fig. 7 is a schematic perspective view of the rear end cap in the elevator traction machine with the function of preventing the rotating shaft from being locked.

Fig. 8 is a front view of fig. 7.

Fig. 9 is a sectional view B-B of fig. 8.

Fig. 10 is a schematic perspective view of a bearing end cap in an elevator traction machine having a function of preventing a rotating shaft from being locked.

1-a machine shell; 11-a first mounting hole; 2-a rotating shaft; 21-front shaft shoulder; 22-rear shaft shoulder; 23-an annular limiting groove; 3-a traction sheave; 4-a rotor; 5-a stator; 6-rear end cap; 61-a second mounting hole; 611-a stop flange; 7-front floating bearing; 8-rear positioning bearing; 9-bearing end cap; 91-annular abutment flange; 10-a retainer ring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The contents of the present invention will be described in further detail with reference to the specific embodiments, and fig. 1, fig. 2 and fig. 3 respectively show a schematic perspective view, a front view and a sectional view a-a of an elevator traction machine having a function of preventing a rotating shaft from being locked in the present invention, and it can be seen that the elevator traction machine mainly comprises a housing 1, a rotating shaft 2, a traction sheave 3, a rotor 4, a stator 5, a rear end cover 6, a front floating bearing 7, a rear positioning bearing 8, and the like. Wherein the rear end cap 6 and the housing 1 are detachably fastened by means of screws to jointly form an assembly chamber. A first mounting hole 11 is formed in the housing 1 to penetrate in the front-rear direction for mounting the front floating bearing 7 (see fig. 5). A second mounting hole 61 is formed in the rear end cover 6 to extend therethrough in the front-rear direction, for mounting the rear positioning bearing 8 (see fig. 7). The rotating shaft 2 sequentially passes through the front floating bearing 7, the assembly cavity and the rear positioning bearing 8. The traction sheave 3 is arranged right in front of the machine shell 1 and detachably sleeved and fixed on the rotating shaft 2. The rotor 4 and the stator 5 are both built in the assembly chamber. The rotor 4 is sleeved and fixed on the rotating shaft 2 and cooperates with the stator 5 to drive the rotating shaft 2 to perform circumferential rotation around the central axis thereof. As can be seen from the above description, the rotating shaft 2 is assembled by means of floating of one fixed end of one end, so that unnecessary damage and blocking caused by cold expansion and cold contraction are avoided.

In addition, according to a long-term experiment result, when the front floating bearing 7 is preferably a self-aligning needle roller bearing, and the rear positioning bearing 8 is preferably a deep groove ball bearing, the elevator traction machine can achieve a good operation effect. As is known, the bearing outer circle of the self-aligning needle roller bearing is designed to be a convex spherical surface, and two polymer races designed to match the outer circle and the concave spherical surface are combined on a stamped steel ring and mounted on an outer ring. The self-aligning needle roller bearing is mainly used for bearing radial load, has good alignment, and can automatically compensate the coaxiality error generated by the deflection of the shaft and the deformation of the machine shell, thereby relaxing the requirements on the manufacturing precision and the assembling precision of parts to a certain extent and further reducing the manufacturing cost. The self-aligning function of the aligning needle roller bearing can ensure that the rotating shaft 2 is always kept in a good stress state in the operation process, and the rotating shaft 2 is ensured to be kept in a stable and high-efficiency operation state for a long time.

For the floating end, on the premise of ensuring the reliable positioning of the self-aligning needle roller bearing, a front shaft shoulder 21 may be further provided on the rotating shaft 2 in order to simplify the structural design as much as possible and reduce the assembly difficulty. The inner ring of the self-aligning needle roller bearing is fitted over the rotating shaft 2 in an interference fit manner, and the rear end surface of the inner ring is abutted by the aforementioned front shoulder 21 (as shown in fig. 3 and 6).

For the fixed end, the elevator traction machine with the function of preventing the rotating shaft from being blocked is additionally provided with a bearing end cover 9 and a retaining ring 10. A rear shaft shoulder 22 and an annular limiting groove 23 are also arranged on the rotating shaft 2. A stopper flange 611 is provided in the second mounting hole 61 near the rear end thereof. The inner ring of the deep groove ball bearing is sleeved on the rotating shaft 2 in a transition fit manner, the front end surface and the rear end surface of the deep groove ball bearing are respectively abutted by the rear shaft shoulder 22 and the check ring 10, and correspondingly, the check ring 10 is arranged in the second mounting hole 61 and is clamped and fixed in the annular limiting groove 23. The outer ring of the deep groove ball bearing is sleeved in the second mounting hole 61 in a transition fit manner, and the front end surface and the rear end surface of the deep groove ball bearing are respectively abutted by the bearing end cover 9 and the retaining flange 611, and correspondingly, the bearing end cover 9 is arranged in the assembly cavity and is detachably fixed on the rear end cover 6 (as shown in fig. 4, 6, 7, 8 and 9). Through adopting above-mentioned technical scheme to set up to inject deep groove ball bearing's relative mounted position effectively, and avoided its inner circle to take place axial displacement phenomenon for the outer lane.

Of course, as a further optimization of the above technical solution, an annular abutting flange 91 may also extend from the rear side wall of the bearing end cover 9 to the outer ring corresponding to the deep groove ball bearing, so as to realize reliable abutting of the outer ring of the deep groove ball bearing (as shown in fig. 4 and 10). Therefore, on the premise of ensuring that the bearing end cover 9 is reliably abutted against the deep groove ball bearing, the contact area of the bearing end cover and the deep groove ball bearing is reduced as much as possible, and the requirement of the bearing end cover 9 on the machining precision is further effectively relaxed.

Finally, it should be noted that the elevator traction machine with the function of preventing the rotating shaft from being locked can be additionally provided with the wave-shaped ring according to specific conditions. The wave ring is inserted into the second mounting hole 61 and is always elastically pressed between the stopper flange 611 and the outer ring of the deep groove ball bearing (not shown). The existence of the wave-shaped ring can adjust and fill the assembly clearance of the deep groove ball bearing, and the axial movement phenomenon of the deep groove ball bearing in the actual operation process is avoided.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. An elevator traction machine with a function of preventing a rotating shaft from being blocked is characterized by comprising a machine shell, a rotating shaft, a traction wheel, a rotor, a stator, a rear end cover, a front floating bearing and a rear positioning bearing; the rear end cover and the shell are buckled with each other to form an assembly cavity together; a first mounting hole penetrating along the front-back direction is formed in the shell and used for mounting the front floating bearing; a second mounting hole penetrating along the front-back direction is formed in the rear end cover and used for mounting the rear positioning bearing; the rotating shaft sequentially penetrates through the front floating bearing, the assembling cavity and the rear positioning bearing; the traction sheave is arranged right in front of the shell and detachably sleeved and fixed on the rotating shaft; the rotor and the stator are both arranged in the assembly cavity; the rotor is sleeved and fixed on the rotating shaft and cooperates with the stator to drive the rotating shaft to perform circumferential rotation motion around the central axis of the rotating shaft; the front floating bearing is a self-aligning needle roller bearing; the rear positioning bearing is a deep groove ball bearing.

2. The elevator traction machine with the function of preventing the rotating shaft from being locked according to claim 1, wherein a front shaft shoulder is arranged on the rotating shaft; the inner ring of the front floating bearing is sleeved on the rotating shaft in an interference fit mode, and the rear end face of the inner ring of the front floating bearing is abutted by the front shaft shoulder.

3. The elevator traction machine with the function of preventing the rotating shaft from being stuck as claimed in claim 2, further comprising a bearing end cover and a retainer ring; the rotating shaft is also provided with a rear shaft shoulder and an annular limiting groove; a blocking and leaning flange is arranged in the second mounting hole close to the rear end part of the second mounting hole; the inner ring of the rear positioning bearing is sleeved on the rotating shaft in a transition fit manner, the front end face and the rear end face of the rear positioning bearing are respectively abutted by the rear shaft shoulder and the check ring, and correspondingly, the check ring is arranged in the second mounting hole and is clamped and fixed in the annular limiting groove; the outer ring of the rear positioning bearing is sleeved in the second mounting hole in a transition fit mode, the front end face and the rear end face of the rear positioning bearing are respectively abutted by the bearing end cover and the retaining flange, correspondingly, the bearing end cover is arranged in the assembly cavity and is detachably fixed on the rear end cover.

4. The elevator traction machine with the function of preventing the rotating shaft from being locked according to claim 3, wherein an annular abutting flange extends backwards from the rear side wall of the bearing end cover just corresponding to the outer ring of the rear positioning bearing.

5. The elevator traction machine having the function of preventing the rotating shaft from being stuck according to claim 4, further comprising a wave-shaped ring; the wave ring is arranged in the second mounting hole and is always elastically abutted between the baffle flange and the outer ring of the rear positioning bearing.

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