CN209740576U - Lifting mechanism and roller thereof - Google Patents
Lifting mechanism and roller thereof Download PDFInfo
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- CN209740576U CN209740576U CN201920576492.7U CN201920576492U CN209740576U CN 209740576 U CN209740576 U CN 209740576U CN 201920576492 U CN201920576492 U CN 201920576492U CN 209740576 U CN209740576 U CN 209740576U
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- groove
- rope
- roller
- spiral groove
- gyro wheel
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Abstract
The utility model discloses an elevating system's gyro wheel, set up on the face of cylinder of gyro wheel and supply the winding helicla flute of rope, still set up at least one in the helicla flute be used for the increase rope with the recess of helicla flute frictional force. Under the effect of heavy object, the rope will apply great pressure to the helicla flute, and the existence of recess can make the rope produce deformation in the helicla flute, and this just increases the roughness of rope and helicla flute contact position, and then has increased the coefficient of dynamic friction between rope and the gyro wheel, and under the same kind of pressure, this kind of design has effectively improved the frictional force between rope and the gyro wheel to can prevent that the rope from skidding in the helicla flute, improve elevating system's reliability of work. The utility model also discloses a elevating system of adopting above-mentioned gyro wheel.
Description
Technical Field
the utility model relates to a lifting machine technical field, concretely relates to elevating system and gyro wheel thereof.
background
The lifting mechanism comprises a transmission shaft and rollers arranged at two ends of the transmission shaft, the transmission shaft rotates to drive the rollers at two ends to rotate, a rope is wound on the rollers, a heavy object is hung at the lower end of the rope, and the rollers enable the rope to be tightened or loosened through positive rotation and reverse rotation so as to drive the heavy object to do lifting motion.
As shown in fig. 3 and 4, in the current lifting mechanism, two ends of a transmission shaft 05 drive a roller 06 to rotate through two flat keys 04, as shown in fig. 1 and 2, a spiral groove with a semicircular section is formed on a cylindrical surface of the roller 06, a rope 02 is wound in the spiral groove, and as can be found by combining fig. 5, an end portion of the rope 02 is fastened on an end surface of the roller by a pressing plate 03 and a screw 01.
However, in practical use, the rope is easy to slip in the semicircular spiral groove, and in severe cases, the end of the rope is directly separated from the pressure plate, so that the whole lifting mechanism fails.
SUMMERY OF THE UTILITY MODEL
the utility model aims at one of provide an elevating system's gyro wheel to can effectively increase the frictional force between rope and the helicla flute, avoid the rope to skid on the gyro wheel, thereby guarantee the reliability of elevating gear work.
another object of the present invention is to provide a lifting mechanism using the above roller.
in order to solve the technical problem, the utility model discloses a hoist mechanism's gyro wheel sets up on its face of cylinder and supplies the winding helicla flute of rope, and still set up at least one in the helicla flute be used for increasing the rope with the recess of helicla flute frictional force.
Preferably, the groove is formed in the bottom of the spiral groove, and the groove bottom of the groove extends towards the axis of the roller.
Preferably, the cross section of the spiral groove is rectangular, and the wall surfaces of the spiral groove are in arc shapes which are symmetrically distributed on two sides of the groove and connected with the groove.
Preferably, the position where the groove is connected with the wall surface of the spiral groove is in a chamfer or arc transition structure.
Preferably, the central angle corresponding to any one of the arcs is 60-70 degrees.
Preferably, the depth of the groove in the radial direction of the roller is H, and the depth of the spiral groove in the radial direction of the roller is H, wherein H/H is less than or equal to 1/2.
Preferably, a rope fixing portion for fixing the rope is further opened at an end of the roller, and the rope fixing portion includes:
The embedded positioning groove is formed in the end part of the roller and the depth of the embedded positioning groove is smaller than the diameter of the rope;
The bolt holes penetrate through the two axial ends of the roller, and are distributed on the two sides of the embedded positioning groove;
The compression bolt penetrates through the bolt hole;
The pressing plate is sleeved on the compression bolt and is in contact with the end cap of the compression bolt, and the pressing plate covers the rope placed in the embedded positioning groove;
and the locking nut is screwed on the compression bolt.
The utility model discloses in still disclose one kind with the other gyro wheel of above-mentioned gyro wheel based on same design, set up on the face of cylinder of this gyro wheel and supply the winding helicla flute of rope, still be provided with at least one in the helicla flute be used for increasing the rope with the arch of helicla flute frictional force.
the utility model discloses in still disclose a lifting mechanism, including transmission shaft and the gyro wheel of setting at the transmission shaft both ends, and the gyro wheel is the gyro wheel disclosed in the above-mentioned arbitrary one.
Preferably, the mounting hole of the roller is a spline hole, and the end of the transmission shaft is sleeved in the spline hole and connected with the roller through a spline.
according to the above technical scheme, the utility model discloses a gyro wheel, its be used for twining the spiral groove of rope and offered the recess that is used for increasing rope and spiral groove frictional force in the spiral groove, technical personnel in the field can understand, under the effect of heavy object, the rope will apply great pressure to the spiral groove, and the existence of recess, can make the rope produce deformation in the spiral groove, this roughness that has just increased rope and spiral groove contact position, and then the coefficient of dynamic friction between rope and the gyro wheel has been increased, under the same kind of pressure, frictional force between rope and the gyro wheel has effectively been improved in this kind of design, thereby can prevent that the rope from skidding in the spiral groove, the reliability of elevating system work has been improved.
The utility model discloses a lifting mechanism owing to adopted above-mentioned gyro wheel, therefore has the corresponding technical advantage of above-mentioned gyro wheel concurrently, and this is no longer repeated here.
Drawings
FIG. 1 is a schematic diagram of a roller in the prior art;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic end view of a prior art propeller shaft;
FIG. 4 is a schematic structural diagram of an end face of a roller in the prior art;
FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic structural view of a roller of the present invention;
FIG. 7 is an enlarged view of A1 in FIG. 6;
Fig. 8 is a schematic end face structure view of the middle transmission shaft of the present invention;
FIG. 9 is a schematic structural view of the end surface of the roller of the present invention;
FIG. 10 is a schematic cross-sectional view taken along line A1-A1 in FIG. 9;
Fig. 11 is a schematic structural view of the lifting mechanism disclosed in the present invention.
in the attached drawing, 1 is a compression bolt, 2 is a rope, 3 is a pressure plate, 4 is a spline, 5 is a transmission shaft, 6 is a roller, 7 is a locking nut, 8 is a spiral groove, and 9 is a groove.
Detailed Description
in order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
referring to fig. 6 to 11, an embodiment of the present invention discloses a roller of an elevator mechanism, wherein a spiral groove 8 for winding a rope 2 is formed on a cylindrical surface of the roller 6, at least one groove 9 for increasing a friction force between the rope 2 and the spiral groove 8 is further formed in the spiral groove 8, and a length direction of the groove 9 should extend along with the spiral groove 8.
Those skilled in the art can understand that the additional groove 9 will complicate the shape of the inner wall of the spiral groove 8, and increase the roughness of the inner wall of the spiral groove 8, in addition, under the action of a weight, the rope 2 will apply a larger pressure to the spiral groove 8, and the presence of the groove 9 will cause the rope 2 to deform in the spiral groove 8, which increases the roughness of the contact position between the rope 2 and the spiral groove 8, and both the increase of the roughness of the inner wall of the spiral groove 8 and the increase of the roughness of the deformation position of the rope 2 increase the coefficient of dynamic friction between the rope 2 and the roller 6, and under the same pressure, the roller 6 disclosed in the above embodiment can effectively improve the friction between the rope 2 and the roller 6, thereby effectively preventing the rope 2 from slipping in the spiral groove 8, and improving the working reliability of the lifting mechanism.
It should be noted that the grooves 9 may be opened on the side wall or the bottom of the spiral groove 8, and the number of the grooves may be one or more, and from the viewpoint of convenience of production design and reduction of production cost, the groove 9 on the middle roller 6 of the present invention is disposed at the bottom of the spiral groove 8, as shown in fig. 6, and the bottom of the groove 9 itself extends toward the axis of the roller 6, as shown in fig. 7.
the sectional shape of the groove 9 itself is not limited, and may be V-shaped or U-shaped, and the cross section of the groove 9 in this case is rectangular, specifically, referring to fig. 7, on the cross section of the spiral groove 8, the groove 9 is rectangular, the wall surfaces of the spiral groove 8 are arc-shaped and symmetrically distributed on both sides of the groove 9, and the wall surfaces of the spiral groove 8 are connected to the groove 9. Because the groove 9 is rectangular, a sharp-shaped structure may appear at the connection part of the wall surface of the spiral groove 8 and the groove 9, which is easy to damage the rope 2.
If the angle of the central angle corresponding to the groove 9 is too small, the effect of increasing the friction force is limited, and if the angle of the central angle corresponding to the groove 9 is too large, the rope is easily and completely embedded into the groove 9, which may cause the rope 2 to be stuck, in order to increase the friction force between the rope 2 and the roller 6 and avoid the rope 2 from being stuck, in the roller 6 disclosed in the embodiment, the central angle corresponding to the arc shape on any side of the groove 9 is 60 to 70 degrees.
Similarly, if the depth of the groove 9 in the radial direction of the roller is too small, the effect of increasing the friction force is limited, and if the depth of the groove 9 is too large, the rope 2 cannot be embedded into the groove bottom of the groove 9 because the deformation amount of the rope 2 is limited, so that the depth of the groove 9 is optimally designed in the embodiment, specifically, the depth of the groove 9 in the radial direction of the roller 6 is H, the depth of the spiral groove 8 in the radial direction of the roller is H, and H/H is less than or equal to 1/2.
Please refer to fig. 10, the utility model discloses a tip of gyro wheel 6 still is provided with the rope fixed part that is used for fixed rope 2, the rope fixed part is including inlaying the dress constant head tank, the bolt hole, clamp bolt 1, clamp plate 3 and lock nut 7, inlay the dress constant head tank and set up at the tip of gyro wheel 6, and its degree of depth is less than the diameter of rope 2, in order to guarantee that clamp plate 3 can push down rope 2, the bolt hole link up gyro wheel 6 is ascending both ends to, and the bolt hole distributes in the both sides of inlaying the dress constant head tank, clamp bolt 1 wears to establish in the bolt hole, clamp plate 3 cover establish on clamp bolt 1 and with clamp bolt 1's end cap contact, clamp plate 3 covers and places on inlaying the rope 2 of adorning in the constant head tank. Compared with the mode of tapping at the end face 6 of the roller and installing the pressing plate 3 through screws at present, the mode of fastening the pressing plate 3 through the bolts penetrating through the two ends of the roller 6 in the scheme disclosed in the embodiment is better, the processing is convenient, and the rope 2 is fixed more firmly.
in addition, the embodiment of the utility model provides an in still disclose another and gyro wheel 6 based on same thinking with above-mentioned gyro wheel 6, offer on the face of cylinder of this gyro wheel 6 and supply 2 winding helicla flute 8 of rope, still be provided with at least one arch that is used for increasing rope 2 and 8 frictional forces of helicla flute in the helicla flute 8.
the principle of this kind of gyro wheel 6 increase frictional force is unanimous with the disclosed gyro wheel 6's of above-mentioned embodiment principle, the utility model discloses in no longer describe this repeatedly.
The embodiment of the utility model provides an in still disclose a lifting mechanism, as shown in fig. 11, including transmission shaft 5 and the gyro wheel 6 of setting at transmission shaft 5 both ends, this gyro wheel 6 is the gyro wheel disclosed in above-mentioned arbitrary embodiment. Because the roller 6 disclosed in the above embodiment is adopted, the lifting mechanism has the technical advantages corresponding to the roller, which is not described herein again.
in the prior art, along with the repeated forward and reverse conversion of the roller 6, the flat key between the transmission shaft 5 and the roller 6 is easily deformed, and the gap between the flat key and the key groove is larger and larger, which may eventually cause transmission failure, please refer to fig. 8 and 9, in this embodiment, the installation hole of the roller 6 is specifically a spline hole, and the end portion of the transmission shaft 5 is sleeved in the spline hole and connected with the roller 6 through the spline 4. Compared with the transmission shaft 5 and the roller 6 which are connected through a flat key at present, the transmission stability of the transmission shaft 5 and the roller 6 can be effectively improved after the spline 4 is adopted.
therefore, in the lifting mechanism disclosed in the utility model, the roller 6 increases the friction force between the roller and the rope 2 by improving the spiral groove 8, and the rope 2 can be effectively prevented from falling off the roller 6 by matching with the improvement of the rope fixing part at the end part of the roller 6; the flat key transmission between the transmission shaft 5 and the roller 6 is changed into the spline 4 transmission, so that the transmission stability between the transmission shaft 5 and the roller 6 is effectively improved.
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 (10)
1. The roller of the lifting mechanism is characterized in that at least one groove (9) used for increasing the friction force between a rope and the spiral groove (8) is formed in the spiral groove (8).
2. A roller according to claim 1, characterized in that the groove (9) opens at the bottom of the spiral groove (8) and the groove bottom of the groove (9) extends towards the axis of the roller (6).
3. A wheel according to claim 2, characterized in that said groove (9) is rectangular in cross section of said spiral groove (8), and the wall surface of said spiral groove (8) is arc-shaped and symmetrically distributed on both sides of said groove (9) and connected to said groove (9).
4. A wheel according to claim 3, characterized in that the position where said groove (9) meets the wall surface of said spiral groove (8) is a chamfer or an arc transition.
5. A wheel according to claim 3, wherein the central angle of any one of said arcs is 60 ° to 70 °.
6. A roller according to any one of claims 1 to 5, characterized in that the depth of the groove (9) in the radial direction of the roller is H and the depth of the spiral groove (8) in the radial direction of the roller is H, wherein H/H is 1/2.
7. A roller according to any one of claims 1 to 5, wherein a rope fixing portion for fixing the rope (2) is further provided at an end of the roller (6), and the rope fixing portion comprises:
the embedded positioning groove is formed in the end part of the roller (6) and the depth of the embedded positioning groove is smaller than the diameter of the rope (2);
The bolt holes penetrate through the two axial ends of the roller (6), and are distributed on the two sides of the embedded positioning groove;
The compression bolt (1) is arranged in the bolt hole in a penetrating mode;
The pressing plate (3) is sleeved on the pressing bolt (1) and is in contact with an end cap of the pressing bolt (1), and the pressing plate (3) covers the rope (2) placed in the embedded positioning groove;
And the locking nut (7) is screwed on the compression bolt (1).
8. the roller of the lifting mechanism is characterized in that at least one bulge used for increasing the friction force between the rope (2) and the spiral groove (8) is further arranged in the spiral groove (8).
9. A lifting mechanism comprising a transmission shaft (5) and rollers (6) arranged at both ends of the transmission shaft (5), characterized in that the rollers (6) are rollers according to any one of claims 1-7.
10. The lifting mechanism according to claim 9, characterized in that the mounting hole of the roller (6) is a splined hole, and the end of the transmission shaft (5) is sleeved in the splined hole and connected with the roller (6) through a spline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576492.7U CN209740576U (en) | 2019-04-25 | 2019-04-25 | Lifting mechanism and roller thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576492.7U CN209740576U (en) | 2019-04-25 | 2019-04-25 | Lifting mechanism and roller thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209740576U true CN209740576U (en) | 2019-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920576492.7U Active CN209740576U (en) | 2019-04-25 | 2019-04-25 | Lifting mechanism and roller thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209740576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969963A (en) * | 2019-04-25 | 2019-07-05 | 北京奥特美克科技股份有限公司 | A kind of elevating mechanism and its idler wheel |
-
2019
- 2019-04-25 CN CN201920576492.7U patent/CN209740576U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969963A (en) * | 2019-04-25 | 2019-07-05 | 北京奥特美克科技股份有限公司 | A kind of elevating mechanism and its idler wheel |
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