CN217462945U - High-strength hollow shaft and sludge drying equipment - Google Patents
High-strength hollow shaft and sludge drying equipment Download PDFInfo
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- CN217462945U CN217462945U CN202221412056.4U CN202221412056U CN217462945U CN 217462945 U CN217462945 U CN 217462945U CN 202221412056 U CN202221412056 U CN 202221412056U CN 217462945 U CN217462945 U CN 217462945U
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- hollow shaft
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- high strength
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Abstract
The utility model discloses a high strength quill shaft and sludge drying equipment, the quill shaft includes hollow central siphon and spindle nose, the spindle nose has the first link that is used for the input power and is used for connecting the second link of hollow central siphon, the diameter of second link is greater than the first link, the second link has the centre bore that inwards extends from the terminal surface, the outer circumference of second link has the grafting section that the necking down formed and passes through the grafting section with the mouth of pipe grafting cooperation of hollow central siphon; the two ends of the hollow shaft tube are provided with first pin holes distributed along the circumferential direction, each first pin hole extends along the radial direction, the insertion section is provided with a second pin hole corresponding to the first pin hole on the outer circumference, and the hollow shaft tube is connected with the shaft head through a power-assisted pin inserted into the first pin hole and the second pin hole. The hollow shaft improves the connection strength, the equipment stability and the economic benefit, and reduces the processing difficulty and the processing cost.
Description
Technical Field
The utility model relates to a sludge drying equipment technical field especially relates to sludge drying equipment's high strength quill shaft. The utility model discloses still relate to and be equipped with the sludge drying equipment of high strength quill shaft.
Background
In the sludge drying industry, drying equipment plays a very big role, and in the sludge drying equipment, a hollow shaft is a main core component and is a carrier for bearing rotation and heat exchange, and the heat exchange corresponding to the sludge drying equipment plays an irreplaceable role.
The hollow shaft continuously bears the weight of the main shaft and transmits the torque for stirring and conveying the sludge, so that the structural strength of the hollow shaft is an important index for measuring the performance stability of the drying machine, and the connection mode of the shaft heads at the two ends of the hollow shaft and the hollow pipe is a key point for determining the strength of the hollow shaft.
At present, the spindle heads at two ends of a hollow shaft are connected with a hollow pipe by transition connecting flanges, and torque is transmitted twice through welding seams and bolts respectively, so that the requirement on a welding process is high, and welding defects cannot be caused; the stress form of the shaft head for transmitting the torque through the bolt is unreasonable. When large parts are involved, if welding defects are generated, the difficulty of rework is high, and the parts are easily scrapped to cause waste; when a large torque is transmitted through the bolt, the bolt is loosened under the action of the reciprocating torque, so that unpredictable potential safety hazards exist, and the reliability of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high strength quill shaft to overcome the above weak point that current quill shaft exists.
Another object of the utility model is to provide a sludge drying equipment who is equipped with high strength quill shaft.
In order to achieve the above object, the present invention provides a high strength hollow shaft, including a hollow shaft tube and shaft heads disposed at two ends of the hollow shaft tube, wherein the shaft head has a first connection end for inputting power and a second connection end for connecting the hollow shaft tube, the diameter of the second connection end is greater than that of the first connection end, the second connection end has a central hole extending from an end face inwards, and the outer circumference of the second connection end has an insertion section formed by necking down and is in insertion fit with the pipe orifice of the hollow shaft tube through the insertion section; the two ends of the hollow shaft tube are provided with first pin holes distributed along the circumferential direction, each first pin hole extends along the radial direction, the insertion section is provided with a second pin hole corresponding to the first pin hole on the outer circumference, and the hollow shaft tube is connected with the shaft head through a power-assisted pin inserted into the first pin hole and the second pin hole.
Optionally, a step is formed at the root of the insertion section of the second connection end, the end of the hollow shaft tube abuts against the step, and an annular welding seam formed by welding connection is arranged between the step and the hollow shaft tube.
Optionally, at least two circles of first pin holes distributed along the circumferential direction are formed in the two ends of the hollow shaft tube, and at least two circles of second pin holes corresponding to the first pin holes are formed in the outer circumference of the insertion section.
Optionally, two adjacent circles of the first pin holes are circumferentially staggered from each other, and two adjacent circles of the second pin holes are circumferentially staggered from each other.
Optionally, the second pin hole is a blind hole.
Optionally, the depth of the second pin hole is 1/2-2/3 of the wall thickness of the plug section.
Optionally, the number of the first pin holes and the second pin holes in each circle is 6-9.
Optionally, the diameter of the hollow shaft tube is
The diameter of the power assisting pin is
Optionally, the first connecting end of the shaft head is stepped, and the diameter of the first connecting end of the shaft head is gradually increased from the first connecting end to the second connecting end.
In order to achieve the above another object, the present invention further provides a sludge drying apparatus, which includes a hollow shaft for bearing the weight of the main shaft and transmitting the stirring and sludge conveying torque, wherein the hollow shaft is a high-strength hollow shaft as described in any one of the above.
The utility model provides a high strength quill shaft, the shaft hole cooperation mounting structure who optimizes the structure has been adopted, and through the direct transmission moment of radial helping hand round pin, the atress mode of spindle nose and hollow central siphon has been improved, welded technological requirement has been reduced, intermediate junction flange has been saved simultaneously, the joint strength of quill shaft has both been improved, the while has reduced the processing degree of difficulty and processing cost again, the equipment stability and economic benefits are improved, effectively solved current quill shaft and passed through moment of welding seam transmission, lead to large-scale article welding to require highly, the spindle nose tip passes through bolted connection transmission quadratic moment, lead to the unreasonable scheduling problem of atress.
The utility model provides a sludge drying equipment is equipped with high strength quill shaft, because the accuse axle has above-mentioned technological effect in the high strength, then the sludge drying equipment who is equipped with this high strength quill shaft should also have corresponding technological effect.
Drawings
Fig. 1 is a schematic structural diagram of a high-strength hollow shaft according to an embodiment of the present invention;
fig. 2 is a view a-a of the high strength hollow shaft of fig. 1.
In the figure:
1. hollow shaft tube 11, first pin hole 12, second pin hole 2, shaft head 3, power assisting pin 4, welding line 21, first connecting end 22, second connecting end 221, center hole 222 and inserting section
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.
In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a high-strength hollow shaft according to an embodiment of the present invention.
As shown in the drawings, in a specific embodiment, the present invention provides a high strength hollow shaft mainly comprising hollow shaft tube 1, two shaft heads 2, a power assisting pin 3, wherein the number of the shaft heads 2 is two, and the two shaft heads are respectively installed at the left and right ends of the hollow shaft tube 1, and because the connection structures of the shaft heads 2 at the left and right ends and the hollow shaft tube 1 are substantially the same, and are in a symmetrical relationship, the following description will be made in more detail on the connection structure of the shaft heads 2 and the hollow shaft tube 1 by taking only one end as an example.
The shaft head 2 is provided with a first connecting end 21 for inputting power and a second connecting end 22 for connecting the hollow shaft tube, the diameter of the second connecting end 22 is larger than that of the first connecting end 21, the first connecting end 21 is in a step shape, the diameter of the first connecting end 21 gradually increases from the first connecting end 21 to the second connecting end 22, the second connecting end 22 is provided with a central hole 221 extending inwards from the end surface, the outer circumference of the second connecting end 22 is provided with an inserting section 222 formed by necking, the inserting section 222 is inserted into the hollow shaft tube 1 by a proper length L and is in inserting fit with the tube opening of the hollow shaft tube 1, and a more precise shaft hole fit tolerance can be adopted between the first connecting end 21 and the second connecting end 22.
The both ends of hollow central siphon 1 are equipped with two rings of first pinhole 11 that distribute along the circumferential direction, and each first pinhole 11 extends along radial direction respectively, and grafting section 222 is equipped with the second pinhole 12 corresponding with first pinhole 11 on the periphery, and second pinhole 12 is the blind hole, and its degree of depth is 1/2 ~ 2/3 of grafting section 222 wall thickness, and each circle first pinhole 11 and the quantity of second pinhole 12 are six, and hollow central siphon 1 and spindle nose 2 are connected through the helping hand round pin 3 that inserts first pinhole 11 and second pinhole 12.
If the diameter of the hollow shaft tube 1 is
The straightening of the power assisting pin 3Has a diameter of
After calculation, when the size of the hollow shaft tube 1 reaches
When using, if the diameter
The number of the power assistance pins 3 may be eighteen.
The insertion section 222 of the second connection end 22 is formed with a step at the root, the end of the hollow shaft tube 1 abuts against the step to form a seam, and after the two are connected by welding, an annular welding seam 4 is formed at the seam.
Referring to fig. 2, fig. 2 is a view a-a of the high strength hollow shaft shown in fig. 1.
When transmission turning moment, spindle nose 2 is rotatory, transmits turning moment to hollow central siphon 1 through helping hand round pin 3, is about to turning moment through the helping hand round pin 3 transmission of closely cooperating, and turning moment's effect position is in hollow central siphon 1 and spindle nose 2 complex composition plane L length range.
According to the following steps: m (moment) ═ F (shear force) × R (radius of action). When M is constant, the larger R is, the smaller F is, and the more reasonable the force is. When the rotating moment acts on the joint surface position of the hollow shaft tube 1 and the shaft head 2, the acting moment is shared on the plurality of the power-assisted pins 3, the stress of each power-assisted pin 3 is greatly reduced, the F (shearing force) borne by the power-assisted pin 3 is minimum, the stress of the power-transferring part is in the most reasonable state, and meanwhile, the stress concentration of the key part of the shaft is reduced, and the stability of the equipment structure is improved.
The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and different embodiments can be obtained by performing targeted adjustment according to actual needs. For example, two ends of the hollow shaft tube 1 are provided with one or three circles of first pin holes 11 distributed along the circumferential direction, and the insertion section 222 is provided with one or three circles of second pin holes 12 corresponding to the first pin holes 11 on the outer circumference; or, two adjacent circles of the first pin holes 11 are circumferentially displaced from each other, two adjacent circles of the second pin holes 12 are circumferentially displaced from each other, and so on. This is not illustrated here, since many implementations are possible.
Because the length L range of the matching part of the spindle nose 2 and the hollow spindle tube 1 bears the bending moment M2 generated by the gravity action of the whole spindle, the stress concentration is small; the hollow shaft tube 1 and the shaft head 2 are respectively and closely matched and positioned with the power-assisted pin 3 to be connected, the rotary torque M is transmitted, the number of the power-assisted pins 3 is large, the welding seam 4 is not a main stress part, only the conventional annular welding seam 4 is adopted, the welding requirement is low, and the processing cost is low.
Except that above-mentioned high strength quill shaft, the utility model discloses still provide a sludge drying equipment, this sludge drying equipment have quill shaft and other component parts, and wherein, the quill shaft is the high strength quill shaft of above-mentioned description, and it is used for bearing main shaft weight in sludge drying equipment to the moment of transmission stirring, transport mud, about all the other structures of sludge drying equipment, please refer to prior art, and this text is no longer repeated.
The high-strength hollow shaft and the sludge drying equipment provided by the utility model are introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A high-strength hollow shaft comprises a hollow shaft tube and shaft heads arranged at two ends of the hollow shaft tube, and is characterized in that the shaft heads are provided with a first connecting end used for inputting power and a second connecting end used for connecting the hollow shaft tube, the diameter of the second connecting end is larger than that of the first connecting end, the second connecting end is provided with a central hole extending inwards from the end face, and the outer circumference of the second connecting end is provided with an inserting section formed by necking down and is in inserting fit with a pipe orifice of the hollow shaft tube through the inserting section; the two ends of the hollow shaft tube are provided with first pin holes distributed along the circumferential direction, each first pin hole extends along the radial direction, the insertion section is provided with a second pin hole corresponding to the first pin hole on the outer circumference, and the hollow shaft tube is connected with the shaft head through a power-assisted pin inserted into the first pin hole and the second pin hole.
2. The high strength hollow shaft according to claim 1, wherein the plug section of the second connection end is formed with a step at a root portion, an end portion of the hollow shaft tube abuts against the step, and an annular weld formed by welding connection is provided therebetween.
3. The high-strength hollow shaft according to claim 1, wherein at least two circles of first pin holes are formed at both ends of the hollow shaft tube and distributed in the circumferential direction, and at least two circles of second pin holes corresponding to the first pin holes are formed at the outer circumference of the insertion section.
4. The high strength hollow shaft of claim 3, wherein two adjacent turns of the first pin holes are circumferentially offset from each other, and two adjacent turns of the second pin holes are circumferentially offset from each other.
5. The high strength hollow shaft of claim 4, wherein the second pin hole is a blind hole.
6. The high strength hollow shaft of claim 5, wherein the depth of the second pin hole is 1/2-2/3 of the wall thickness of the spigot section.
7. The high strength hollow shaft of claim 6, wherein the number of the first and second pin holes per turn is 6-9.
8. The high strength hollow shaft of claim 1 wherein the hollow shaft tube has a diameter of
The diameter of the power assisting pin is
9. The high strength hollow shaft of claim 8, wherein the first connection end of the shaft head is stepped, with a diameter that increases progressively from the first connection end to the second connection end.
10. Sludge drying equipment, comprising a hollow shaft for bearing the weight of a main shaft and transmitting stirring and sludge conveying torque, wherein the hollow shaft is the high-strength hollow shaft in any one of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221412056.4U CN217462945U (en) | 2022-06-07 | 2022-06-07 | High-strength hollow shaft and sludge drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221412056.4U CN217462945U (en) | 2022-06-07 | 2022-06-07 | High-strength hollow shaft and sludge drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217462945U true CN217462945U (en) | 2022-09-20 |
Family
ID=83235796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221412056.4U Active CN217462945U (en) | 2022-06-07 | 2022-06-07 | High-strength hollow shaft and sludge drying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217462945U (en) |
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2022
- 2022-06-07 CN CN202221412056.4U patent/CN217462945U/en active Active
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