CN214170951U

CN214170951U - Crank arm support

Info

Publication number: CN214170951U
Application number: CN202023249735.8U
Authority: CN
Inventors: 王南通; 陈正升; 吴旭科
Original assignee: Suke Actuator Ningbo Co Ltd
Current assignee: Ningbo Suke Automatic Control Engineering Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-10
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a crank arm support, is including the base that is the level and places, the vertical mounting panel that is equipped with on the base, and the horizontal installation transmission shaft in mounting panel middle part, mounting panel and transmission shaft junction installation bearing group, transmission shaft left end connection bearing group, transmission shaft right-hand member demountable installation crank arm, transmission shaft and crank arm pass through the splined connection transmission. When the air supply device works, the output shaft of the actuator is connected with one end of the transmission shaft and drives the transmission shaft to rotate, the crank arm at the other end of the transmission shaft is connected with the air outlet plate of the fan, and the air outlet plate correspondingly deflects under the driving of the crank arm, so that the air supply direction is controlled. In the support structure, a spline structure is adopted at the joint of the transmission shaft and the connecting lever, so that the transmission force achieved in the torque transmission between the actuator and the fan is large, the air supply angle of the air outlet plate is convenient to adjust, the adjusting precision is high, the angle adjusting range is wide, and meanwhile, a bearing group is installed between the installation plate and the transmission shaft, so that the radial jumping amount of the transmission shaft is small, and the torque transmission efficiency is high.

Description

Crank arm support

Technical Field

The utility model relates to a crank arm support.

Background

Fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and for ventilation and draught of boilers and industrial furnaces and kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grain, wind tunnel wind source and air cushion boat inflating and propelling.

Be equipped with out the tuber plate usually in the air outlet department of fan to be equipped with the connecting axle in play tuber plate one side, power unit can drive out the tuber plate through the connecting axle and carry out corresponding upset, thereby adjustment air supply angle, the connecting axle is mostly fixed connection or flat key with out the tuber plate and is connected, and the connecting axle can not carry out radial adjustment with the tuber plate, is difficult to adjust the angle of play tuber plate under quiescent condition.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides a crank arm support.

In order to achieve the purpose, the utility model provides a crank arm support, including the base that is the level and places, the vertical mounting panel that is equipped with on the base, the horizontal installation transmission shaft in mounting panel middle part, the mounting panel with transmission shaft junction installation bearing group, the transmission shaft left end is connected the bearing group, transmission shaft right-hand member demountable installation crank arm, the transmission shaft with the crank arm passes through the splined connection transmission.

As a further improvement, the transmission shaft right-hand member diameter diminishes and forms the second collar portion, process external splines on the outer circumference of second collar portion, crank arm lower part processing internal spline hole with external splines phase-match.

As a further improvement, the axial processing shrinkage joint runs through to on the internal spline hole inner wall the turning arm bottom, the shrinkage joint both sides are passed through locking bolt subassembly and are connected the locking.

As a further improvement, the mounting panel right side processing recess, recess open end installation closing cap, the recess with the closing cap junction forms the bearing cavity, install in the bearing cavity bearing group.

As a further improvement of the present invention, the bearing assembly includes a first bearing and a second bearing, the first bearing and the second bearing are provided with a bearing spacer therebetween.

As a further improvement, the mounting plate lower part extends to the left and right sides and forms the turn-ups, the turn-ups pass through the bolt with the base is fixed.

As a further improvement, the mounting panel bottom is equipped with location portion, it has the constant head tank to correspond processing on the base, location portion stretches into the constant head tank.

As a further improvement, the transmission shaft left end diameter diminishes and forms primary shaft neck portion, primary shaft neck portion passes stretch out behind the bearing group the mounting panel, primary shaft neck portion tip central processing breach.

The utility model has the advantages that:

adopt spline structure to transmit in transmission shaft and connecting lever junction among this supporting structure, formulate the spline number of teeth as required, can adjust the opening angle of air-out board at will under quiescent condition, thereby control actual air outlet's size, make the regulation precision high, angle of adjustment wide range, the transmission power that reaches in the moment transmission between executor and the fan is also bigger, install the bearing group simultaneously between mounting panel and transmission shaft, make the radial run-out volume of transmission shaft little, moment transmission efficiency is high.

Drawings

FIG. 1 is a front view of a crank arm bracket of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a top view of the assembled structure of the base of component 1 and the mounting plate of component 2;

fig. 5 is a partial cross-sectional view of the component 51.

In the figure: 1. a base; 11. positioning a groove; 2. mounting a plate; 21. a positioning part; 22. flanging; 23. a groove; 3. a bearing set; 31. a first bearing; 32. a bearing spacer; 33. a second bearing; 4. sealing the cover; 5. a drive shaft; 51. a first journal portion; 511. a notch; 52. a second collar portion; 53. an external spline; 6. a crank arm; 61. an inner splined bore; 62. shrinking the seam; 7. a locking bolt assembly; 8. a bearing chamber.

Detailed Description

As shown in figure 1, a crank arm support according to an embodiment of the present invention comprises a horizontally disposed base 1, a mounting plate 2 is vertically disposed on the base 1, the lower portion of the mounting plate 2 extends to the left and right sides to form flanges 22, the flanges 22 are fixed to the base 1 by bolts (see figure 4), a positioning portion 21 is disposed at the bottom of the mounting plate 2, a positioning slot 11 is correspondingly formed on the base 1, the positioning portion 21 extends into the positioning slot 11, a transmission shaft 5 is transversely disposed at the middle portion of the mounting plate 2, a bearing set 3 is mounted at the connection portion of the mounting plate 2 and the transmission shaft 5, the diameter of the left end of the transmission shaft 5 is reduced to form a first journal portion 51, the first journal portion 51 passes through the bearing set 3 and then extends out of the mounting plate 2, a notch 511 (see figure 5) is formed in the center of the end portion of the first journal portion 51, a groove 23 is formed in the right side of the mounting plate 2, a sealing cover 4 is mounted at the opening end of the groove 23, and a bearing chamber 8 is formed at the connection portion of the sealing cover 4, a bearing group 3 is arranged in the bearing chamber 8, the bearing group 3 comprises a first bearing 31 and a second bearing 33, a bearing spacer 32 (see figure 2) is arranged between the first bearing 31 and the second bearing 33, the sealing cover 4 is annular, the outer diameter of the sealing cover 4 is larger than the inner diameter of the groove 23, the inner diameter of the sealing cover 4 is smaller than the inner diameter of the groove 23, the left side part of the sealing cover 4 is abutted against the outer ring end surface of the bearing group 3 to form radial limit to the bearing group 3, the left end of the transmission shaft 5 is connected with the bearing group 3, the left part of the transmission shaft 5 is abutted against the inner ring end surface of the bearing group 3 near the shaft neck 51, the right end of the transmission shaft 5 is detachably provided with a crank arm 6, the transmission shaft 5 and the crank arm 6 are connected and transmitted through a spline, the diameter of the right end of the transmission shaft 5 is reduced to form a second shaft neck 52, an outer spline 53 is processed on the outer circumference of the second neck 52, an inner spline hole 61 is processed on the lower part of the crank arm 6 to be matched with the outer spline 53, a shrinkage joint 62 is axially processed on the inner wall of the inner spline hole 61 and penetrates to the bottom of the crank arm 6, and two sides of the shrinkage joint 62 are connected and locked through a locking bolt assembly 7 (see fig. 3).

When in specific use, the following description is made in conjunction with the accompanying drawings in order to facilitate understanding of the present invention;

when the fan works, one end of the transmission shaft, which extends out of the mounting plate, is connected with an output shaft of the actuator, a notch at the end part of the transmission shaft is matched and clamped with the output shaft of the actuator, the upper part of the crank arm is connected with an air outlet plate of the fan, and when the actuator drives the transmission shaft to rotate, the crank arm which is connected with the transmission shaft through a spline deflects correspondingly, so that the air outlet plate is driven to deflect, and the air supply angle is adjusted; under transmission shaft quiescent condition, then can adjust out the aerofoil angle through the internal spline hole of adjustment turning arm and the meshing angle of the external splines on the transmission shaft, the number of teeth on internal spline hole and the external splines is formulated according to actual need, and the angle that goes out the aerofoil in principle can once adjust for the angle modulation precision of air-out board is high.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A crank arm support is characterized in that: including base (1) that is the level and places, vertical mounting panel (2) that are equipped with on base (1), mounting panel (2) middle part horizontal installation transmission shaft (5), mounting panel (2) with transmission shaft (5) junction installation bearing group (3), transmission shaft (5) left end is connected bearing group (3), transmission shaft (5) right-hand member demountable installation turning arm (6), transmission shaft (5) with turning arm (6) are through the splined connection transmission.

2. A crank arm bracket according to claim 1, characterized in that: the diameter of the right end of the transmission shaft (5) is reduced to form a second shaft neck portion (52), an external spline (53) is machined on the outer circumference of the second shaft neck portion (52), and an internal spline hole (61) is machined in the lower portion of the crank arm (6) and matched with the external spline (53).

3. A crank arm bracket according to claim 2, characterized in that: and a shrinkage joint (62) is axially processed on the inner wall of the inner spline hole (61) and penetrates to the bottom of the crank arm (6), and two sides of the shrinkage joint (62) are connected and locked through a locking bolt assembly (7).

4. A crank arm bracket according to claim 1, characterized in that: mounting panel (2) right side processing recess (23), recess (23) open end installation closing cap (4), recess (23) with closing cap (4) junction forms bearing cavity (8), install in bearing cavity (8) bearing group (3).

5. A crank arm bracket according to claim 1 or 4, characterized in that: the bearing group (3) comprises a first bearing (31) and a second bearing (33), and a bearing spacer bush (32) is arranged between the first bearing (31) and the second bearing (33).

6. A crank arm bracket according to claim 1, characterized in that: the lower part of the mounting plate (2) extends to the left side and the right side to form flanges (22), and the flanges (22) are fixed to the base (1) through bolts.

7. The crank arm bracket as set forth in claim 6, wherein: the mounting panel (2) bottom is equipped with location portion (21), it has constant head tank (11) to correspond processing on base (1), location portion (21) stretch into constant head tank (11).

8. A crank arm bracket according to claim 1, characterized in that: the diameter of the left end of the transmission shaft (5) is reduced to form a first shaft neck part (51), the first shaft neck part (51) penetrates through the bearing group (3) and then extends out of the mounting plate (2), and a notch (511) is machined in the center of the end part of the first shaft neck part (51).