CN113280000A - End face tooth connecting structure with positioning function between impeller and main shaft - Google Patents

End face tooth connecting structure with positioning function between impeller and main shaft Download PDF

Info

Publication number
CN113280000A
CN113280000A CN202110689233.7A CN202110689233A CN113280000A CN 113280000 A CN113280000 A CN 113280000A CN 202110689233 A CN202110689233 A CN 202110689233A CN 113280000 A CN113280000 A CN 113280000A
Authority
CN
China
Prior art keywords
positioning
impeller
main shaft
nut
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110689233.7A
Other languages
Chinese (zh)
Other versions
CN113280000B (en
Inventor
李辉
王星
朱阳历
张雪辉
李文
陈海生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Engineering Thermophysics of CAS
Original Assignee
Institute of Engineering Thermophysics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Engineering Thermophysics of CAS filed Critical Institute of Engineering Thermophysics of CAS
Priority to CN202110689233.7A priority Critical patent/CN113280000B/en
Publication of CN113280000A publication Critical patent/CN113280000A/en
Application granted granted Critical
Publication of CN113280000B publication Critical patent/CN113280000B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本发明公开了一种叶轮与主轴之间带定位功能的端面齿连接结构，通过在拉杆上凸台结构，并在拉杆凸台和主轴连接部分设置销孔，通过拉杆定位销保证每次装配时主轴和叶轮的相对位置不变。通过在锁紧螺母中心孔底部边缘设置斜面，使拉杆和锁紧螺母尽量在轴心线上以减少不平衡量。通过在叶轮和锁紧螺母贴合面上设置定位孔并设置锁紧螺母定位销，使得锁紧螺母每次锁紧时能够旋转至同一位置。通过本发明能够使做完动平衡后每次复装时，拉杆和锁紧螺母都能在同一位置且尽量靠近轴心线位置，从而减少复装带来的不平衡量的增加值，使系统运行时振动更小，更加稳定，延长机组的使用寿命。

Figure 202110689233

The invention discloses an end face tooth connection structure with a positioning function between an impeller and a main shaft. By means of a boss structure on the tie rod, and a pin hole is arranged on the connecting part of the tie rod boss and the main shaft, the tie rod positioning pin ensures that every assembly is performed. The relative positions of the main shaft and the impeller remain unchanged. By setting a bevel on the bottom edge of the center hole of the lock nut, the tie rod and the lock nut are on the axis line as much as possible to reduce the amount of unbalance. By arranging positioning holes on the abutting surfaces of the impeller and the locking nut and arranging the positioning pins of the locking nut, the locking nut can be rotated to the same position each time it is locked. Through the invention, the tie rod and the locking nut can be in the same position and as close to the position of the axis as possible during each reassembly after the dynamic balance is completed, thereby reducing the increase in the unbalance caused by the reassembly and enabling the system to operate. The vibration is smaller, more stable, and prolongs the service life of the unit.

Figure 202110689233

Description

End face tooth connecting structure with positioning function between impeller and main shaft
Technical Field
The invention belongs to the field of impeller machinery, relates to a connecting structure of an impeller and a main shaft, and particularly relates to an end face tooth connecting structure with a positioning function between the impeller and the main shaft.
Background
In the prior art, the impeller and the main shaft are usually connected by using an end face tooth structure, when the impeller and the main shaft are connected by using the result, the impeller and the main shaft are radially positioned and torque-transmitted by using the end face tooth structure, and the axial locking and positioning between the impeller and the main shaft are realized by using the tensioning assembly. In the end face tooth structure, end face teeth are arranged on the end face of a main shaft, end face teeth are also arranged on the end face of the shaft side of an impeller, and the end face of the main shaft is meshed with the end face teeth on the end face of the shaft side of the impeller, so that the radial positioning and torque transmission between the impeller and the main shaft are realized; the tensioning assembly comprises a pull rod and a locking nut, the pull rod is a stud, a central through hole extending along the axial direction is formed in the center of the impeller, an inner threaded hole is formed in the end face of the main shaft, one end of the pull rod penetrates through the central through hole of the impeller and then is in threaded connection with the inner threaded hole in the end portion of the main shaft, the other end of the pull rod is locked and fixed with the locking nut at the locking end of the impeller, and therefore axial locking and positioning between the impeller and the main shaft are achieved, and then dynamic balance testing is conducted. In the end face tooth connecting structure between the existing impeller and a main shaft, under the influence of various factors in assembly, when the main shaft and the impeller are reassembled after being subjected to dynamic balance, a pull rod and a locking nut are difficult to accurately return to the same position as that in dynamic balance, and meanwhile, due to the fact that a certain gap exists between the pull rod and the impeller locking end, the pull rod may deviate from a central line when being tensioned, and the unbalance amount after reassembly is increased due to the reasons. Sometimes, the dynamic balance is finished according to the G1 standard, and the dynamic balance checked after the assembly may exceed the G1 range, so that the unbalance amount of the turbine unit is increased during operation, the vibration is high, and the service life of the turbine unit is influenced after the turbine unit is operated for a long time.
In order to solve the problems, the invention provides an end face tooth connecting structure with a positioning function. Through increasing positioner, pull rod and lock nut can both be screwed to the same position when guaranteeing the assembly at every turn to increase of unbalance amount when reducing the repacking, vibration is littleer when making the unit move, and is more steady.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides an end face tooth connecting structure with a positioning function between an impeller and a main shaft, and the pull rod and a locking nut can be screwed to the same position each time in assembly by adding a positioning device. Through the application of the structure, the increase of unbalance amount after the assembly caused by human factors can be reduced, so that the vibration of the unit is smaller and more stable during operation, and the service life of the unit is prolonged.
In order to achieve the technical purpose, the solution of the invention is as follows:
an end face tooth connecting structure with a positioning function between an impeller and a main shaft is characterized in that the impeller and the main shaft are axially fastened through a tensioning assembly, the tensioning assembly comprises a pull rod and a locking nut, a central through hole extending along the axial direction is formed in the center of the impeller, and one end of the pull rod penetrates through the central through hole of the impeller and then is in threaded connection with an internal thread hole in the end portion of the main shaft; end face teeth which are meshed with each other are arranged between the end face of the main shaft and the end face of the shaft side of the impeller,
the locking end of the impeller is provided with a central counter bore, the other end of the pull rod is locked and fixed with the locking nut at the central counter bore,
the pull rod is provided with an annular boss, the annular boss is axially positioned at the end face tooth joint between the impeller and the main shaft, and grooves matched with the outer diameter of the annular boss are respectively arranged on the end face of the shaft side of the impeller and the end face of the main shaft, so that after the impeller and the main shaft are axially locked, the annular boss is positioned in the groove between the end face of the shaft side of the impeller and the end face of the main shaft;
the annular boss is at least symmetrically provided with two first positioning holes extending along the axial direction in the circumferential direction, the bottom of a counter bore of the end face of the main shaft is at least symmetrically provided with two second positioning holes corresponding to the first positioning holes in the circumferential direction one by one, and pull rod positioning pins penetrate through the first positioning holes and the second positioning holes.
Preferably, the pull rod positioning pin is an inclined pin with a large top and a small bottom, and accordingly, the first positioning hole and the second positioning hole are inclined holes with large top and small bottom.
Preferably, the locking nut is at least symmetrically provided with two third positioning holes in the circumferential direction, the bottom surface of the central counter bore of the impeller locking end is at least symmetrically provided with two fourth positioning holes corresponding to the third positioning holes in the circumferential direction one by one, a compression screw, a spring and a nut positioning pin are sequentially arranged in the third positioning holes from top to bottom, when the third positioning holes and the fourth positioning holes correspond to each other in the circumferential direction one by one, the nut positioning pin is partially inserted into the fourth positioning holes, and is partially positioned in the third positioning holes, and the compression screw is pressed and abutted against the top of the nut positioning pin through the spring.
Furthermore, at least one first step portion located at the bottom is arranged in a third positioning hole of the locking nut, a columnar positioning protrusion is arranged at the bottom of the nut positioning pin, and the columnar positioning protrusion penetrates through the first step portion and is inserted into the fourth positioning hole.
Furthermore, a second step portion located above the first step portion is further arranged in a third positioning hole of the tightening nut, a columnar extending portion is arranged at the bottom of the compression screw, the columnar extending portion penetrates through the second step portion and abuts against the top of the spring, and the bottom of the spring is compressed and abuts against the top of the nut positioning pin.
Preferably, a tapered inclined surface is arranged at the bottom edge of the central hole of the locking nut, and the tapered inclined surface is used for ensuring that the pull rod and the locking nut are on the central line of the main shaft as much as possible, so that the unbalance is reduced.
Preferably, the tail end of the lock nut positioning pin is provided with a threaded hole matched with the pin puller. When the locking nut needs to be disassembled, the compression nut is screwed out, the spring is taken out, the locking nut positioning pin can be pulled out by the pin puller, and then the locking nut can be disassembled by the puller.
Preferably, the tail end of the compression nut is provided with an inner hexagonal hole matched with an inner hexagonal wrench, and the inner hexagonal wrench can be used for mounting and dismounting.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the pull rod is screwed to the same position, the pull rod boss and the main shaft are provided with the communicated positioning holes, when the pull rod is screwed to a specified position, the pull rod boss is aligned with the positioning hole on the main shaft, and the positioning pin is plugged and knocked tightly, so that the pull rod can be strictly guaranteed to be screwed to the same position as the main shaft every time.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the pull rod and the locking nut deviate from the central line when being tensioned, the inner hole edge of the abutting surface of the locking nut and the impeller is provided with the inclined surface for abutting by utilizing the characteristic of good centering of the end face tooth structure, so that the locking nut can automatically return to the central position by utilizing the inclined surface after the pull rod is tensioned, the central line of the pull rod can be reduced from deviating from the central line of the main shaft, and the increase of unbalance is reduced.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the locking nut is screwed to the same position, the joint surface of the impeller and the locking nut is provided with the positioning hole and the locking nut positioning pin, so that when the locking nut is screwed, the locking nut positioning pin enters the positioning hole to be locked under the action of the pressure of the spring when the locking nut positioning pin and the positioning hole are superposed, and in order to reduce the unbalance caused by the possible movement of the spring during the operation of a unit, the spring can be directly detached and the positioning pin can be directly pressed by the compression nut after the assembly is completed if necessary, so that the positioning pin cannot move.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem of unbalance caused by a single pin hole and a single pin, the pull rod positioning pin, the locking nut positioning pin, the spring and the compression screw are symmetrically arranged, so that the problems of large unbalance amount and large removed weight caused by asymmetry can be reduced.
Compared with the prior art, the end face tooth connecting structure with the positioning function between the impeller and the main shaft has the advantages and beneficial effects that:
1. due to the adoption of the positioning pin and the positioning pin hole, the pull rod and the locking nut can be ensured to be in the same position each time when being screwed through the matching of the positioning pin and the positioning pin hole, so that the increase of unbalance caused by position change during the resetting is reduced.
2. Utilize the good centering characteristics of terminal surface tooth structure, set up the inclined plane laminating at the hole edge of lock nut and impeller binding face, like this after the pull rod is taut, lock nut utilizes the inclined plane can get back to central point automatically and put, reduces the increase of unbalance amount.
Drawings
FIG. 1 is a schematic view of an end face tooth connection structure with a positioning function between an impeller and a main shaft according to the present invention;
FIG. 2 is a partial structural view of the joint between the drawbar and the spindle;
FIG. 3 is a schematic view of the joint of the lock nut;
FIG. 4 is a schematic view of a pull rod structure;
FIG. 5 is a schematic structural view of a lock nut, wherein (a) is a 3D schematic view of 1/4 cut away, and (b) is a front view of the lock nut;
FIG. 6 is a schematic view of a lock nut locating pin;
fig. 7 is a schematic structural view of the compression nut.
Wherein the reference numerals are as follows:
impeller 1, lock nut locating pin 2, screw hole 21, spring 3, housing screw 4, hexagon socket hole 41, lock nut 5, locating hole 51, toper inclined plane 52, pull rod 6, boss 61, pull rod locating pin 7, main shaft 8.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments, which are part of the present invention, are not all embodiments, and are intended to be illustrative of the present invention and should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments of the present invention are shown in FIGS. 1 to 7.
Fig. 1 is an overall schematic view of an end face tooth connection structure with a positioning function between an impeller and a main shaft of the present invention, and it can be seen from the figure that in the end face tooth connection structure with a positioning function between an impeller and a main shaft of the present invention, the impeller 1 and the main shaft 8 adopt an end face tooth structure for radial positioning and torque transmission, and the impeller 1 and the main shaft 8 are tightly connected through a tensioning assembly (including a pull rod 6 and a locking nut 5) to realize axial locking and positioning therebetween, wherein in the end face tooth structure, an end face tooth is provided on an end face of the main shaft 8, an end face tooth is also provided on an end face of a shaft side of the impeller 1, and the end face tooth on the end face of the main shaft and the end face tooth on the end face of the shaft side of the impeller are engaged with each other, so as to realize radial positioning and torque transmission between the impeller 1 and the main shaft 8; the tensioning assembly comprises a pull rod 6 and a locking nut 5, the pull rod 5 is a stud, a central through hole extending along the axial direction is formed in the center of the impeller 1, a central counter bore is formed in the locking end of the impeller, an internal thread hole is formed in the end face of the main shaft, one end of the pull rod 6 penetrates through the central through hole of the impeller and then is in threaded connection with the internal thread hole in the end portion of the main shaft, and the other end of the pull rod is locked and fixed with the locking nut 5 in the central counter bore of the locking end of the impeller.
In order to ensure that the locking nut 5 and the pull rod 6 can be located at the same position during assembly at each time, the pull rod 6 is provided with a pull rod positioning pin 7, and the locking nut 5 is provided with a locking nut positioning pin 2, a spring 3 and a compression screw 4. In order to make the pull rod 6 and the locking nut 5 as close to the central line as possible, a conical inclined surface is arranged at the bottom edge of the central hole of the locking nut 5. In order to reduce the unbalance and the increase of the weight during dynamic balance as much as possible, all the positioning pins, the springs and the compression screws are symmetrically arranged.
Fig. 2 is a partial schematic view of an end face tooth fitting part, an annular boss 61 is arranged in the middle of an end face tooth of the pull rod 6, the boss 61 is located at the end face tooth joint between the impeller 1 and the main shaft 8 in the axial direction, counter bores matched with the outer diameter of the boss 61 are arranged on the end face of the impeller shaft side and the end face of the main shaft, one side of the boss 61 is fitted with the counter bore of the main shaft part, a small gap is reserved between the other side of the boss 61 and the counter bore of the impeller part, and the gap between the radial outer circle and the end face tooth is also small. In order to ensure that the pull rod can be positioned at the same position when being screwed every time, the pull rod boss 61 and the end face of the main shaft 8 are respectively provided with a one-to-one corresponding positioning hole, the pull rod positioning pin 7 penetrates through the one-to-one corresponding positioning hole, and the inclined pin is adopted to ensure accurate positioning. The pull rod positioning pin 7 is an inclined pin with a large upper part and a small lower part, and correspondingly, positioning holes in the pull rod boss 61 and the end face of the main shaft 8 are inclined holes with a large upper part and a small lower part, and when the inclined pin needs to be taken down, a pin puller is adopted.
Fig. 3 is a partial schematic view of a joint portion between a lock nut 5 and an impeller 1, and it can be seen from the figure that a positioning device is also arranged on the lock nut 5, the lock nut 5 is at least symmetrically provided with two third positioning holes in the circumferential direction, the bottom surface of a central counter bore of a locking end of the impeller is at least symmetrically provided with two fourth positioning holes corresponding to the third positioning holes one by one in the circumferential direction, a compression screw 4, a spring 3 and a nut positioning pin 2 are sequentially arranged in the third positioning holes from top to bottom, when the third positioning holes correspond to the fourth positioning holes one by one in the circumferential direction, the nut positioning pin 2 is partially inserted into the fourth positioning holes and partially positioned in the third positioning holes, and the compression screw 4 is pressed and abutted against the top of the nut positioning pin 2 through the spring 3. The positioning device is arranged on the locking nut 5, and the positioning device is mainly used for ensuring that the locking nut 5 can be located at the same position every time when being locked, and positioning holes are formed in the locking nut 5 and the impeller 1. The locking nut 5 is provided with a nut positioning pin 2, a spring 3 and a compression screw 4. When the locking nut 5 is screwed to the corresponding position, the nut positioning pin 2 just enters the positioning hole on the impeller under the action of the spring 3 and the compression screw 4, so that accurate positioning is realized. Fig. 5 is a schematic structural view of the lock nut 5, wherein (a) is a 3D schematic view of 1/4 cut, and it can be seen that two steps are provided in the positioning hole 51, the first step is for preventing the positioning pin 2 from coming out of the lock nut 5, and the second step is for placing the compression nut 4 to compress the positioning pin 2. To reduce the amount of unbalance, the positioning holes 51 are arranged symmetrically. (b) The locking nut is shown in elevation and it can be seen that there is a sloping shoulder 52 on the underside of the locking nut 5. The purpose is mainly to utilize good centering effect of the end face teeth, and to ensure that the pull rod 6 and the locking nut 5 are on the central line of the main shaft as much as possible by adopting the inclined surface fitting, so that the unbalance is reduced.
Fig. 4 is a three-dimensional schematic diagram of the pull rod, compared with the traditional pull rod, a screwing platform is removed, due to the adoption of the pull rod positioning pin 7, the pull rod is not required to be ensured to be at the same position in a manual striking mode, and the manual mode is influenced by various factors and cannot be strictly ensured to be at the same position every time. The pull rod positioning pins are symmetrically arranged. As can be seen from fig. 2 and 4, the pull rod 6 is provided with an annular boss 61, the annular boss 61 is located at the end face tooth connection position between the impeller 1 and the main shaft 8 in the axial direction, and both the end face of the impeller shaft side and the end face of the main shaft are provided with counter bores matched with the outer diameter of the annular boss, so that after the impeller 1 and the main shaft 8 are locked in the axial direction, one part of the annular boss 61 is located in the counter bore of the end face of the impeller shaft side, and the other part is located in the counter bore of the end face of the main shaft; the annular boss 61 is at least symmetrically provided with two first positioning holes extending along the axial direction in the circumferential direction, the bottom of the counter bore of the end face of the main shaft is at least symmetrically provided with two second positioning holes corresponding to the first positioning holes in the circumferential direction one by one, and positioning pins penetrate through the first positioning holes and the second positioning holes corresponding to the first positioning holes one by one. When the pull rod 6 is screwed to a specified position, the pull rod boss 61 is aligned with the positioning hole on the main shaft 8, and the positioning pin is plugged and screwed tightly, so that the pull rod can be strictly screwed to the same position as the main shaft every time.
Fig. 6 is a three-dimensional structure diagram of the lock nut positioning pin 2, and the lock nut positioning pin 2 is provided with a threaded hole 21 at the tail end. When the locking nut 5 needs to be disassembled, the compression nut 5 is screwed out, the spring 3 is taken out, the locking nut positioning pin 2 can be pulled out by adopting the pin puller, and then the locking nut 5 can be disassembled by adopting the puller.
Fig. 7 is a three-position schematic view of the compression nut 4, which is provided with a socket 41 at the rear end of the compression nut 4, and which can be mounted and dismounted by a socket wrench.
The object of the present invention is fully effectively achieved by the above embodiments. Those skilled in the art will appreciate that the present invention includes, but is not limited to, what is described in the accompanying drawings and the foregoing detailed description. While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications within the spirit and scope of the appended claims.

Claims (8)

1.一种叶轮与主轴之间带定位功能的端面齿连接结构，所述叶轮与主轴通过拉紧组件实现轴向紧固，所述拉紧组件包括拉杆和锁紧螺母，所述叶轮的中心处设有沿轴向延伸的中心通孔，所述拉杆的一端穿过所述叶轮的中心通孔后与所述主轴端部的内螺纹孔螺纹连接；所述主轴端面及叶轮的轴侧端面之间设有相互啮合的端面齿，其特征在于，1. An end face tooth connection structure with a positioning function between the impeller and the main shaft, the impeller and the main shaft are axially fastened by a tensioning assembly, and the tensioning assembly includes a tie rod and a locking nut, and the center of the impeller is There is a central through hole extending in the axial direction, and one end of the tie rod passes through the central through hole of the impeller and is threadedly connected to the inner threaded hole at the end of the main shaft; the end face of the main shaft and the shaft side end face of the impeller There are mutually meshing end face teeth between them, which is characterized in that: 所述叶轮的锁紧端设有中心沉孔，所述拉杆的另一端在所述中心沉孔处与所述锁紧螺母进行锁紧固定，The locking end of the impeller is provided with a central counterbore, and the other end of the tie rod is locked and fixed with the locking nut at the central counterbore, 所述拉杆上设有一环形凸台，所述环形凸台在轴向上位于所述叶轮与主轴之间的端面齿连接处，所述叶轮轴侧端面及主轴端面上均设有与所述环形凸台的外径相适配的凹槽，使得所述叶轮与主轴在轴向上锁紧后，所述环形凸台位于所述叶轮轴侧端面及主轴端面之间的凹槽中；An annular boss is provided on the tie rod, and the annular boss is located at the connection of the end face teeth between the impeller and the main shaft in the axial direction. a groove with a matching outer diameter of the boss, so that after the impeller and the main shaft are locked in the axial direction, the annular boss is located in the groove between the end face of the impeller shaft and the end face of the main shaft; 所述环形凸台在周向上至少对称设有两沿轴向延伸的第一定位孔，所述主轴端面的沉孔底部至少对称设有两与所述第一定位孔在周向位置上一一对应的第二定位孔，所述第一定位孔与第二定位孔中穿设有拉杆定位销。The annular boss is provided with at least two axially extending first positioning holes symmetrically in the circumferential direction, and the bottom of the counterbore on the end face of the main shaft is symmetrically provided with at least two first positioning holes in the circumferential position. Corresponding second positioning holes, the first positioning holes and the second positioning holes are provided with pull rod positioning pins. 2.根据权利要求1所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述拉杆定位销为上大下小的斜销，相应地，所述第一定位孔与第二定位孔均为上大下小的斜孔。2 . The end face tooth connection structure with positioning function between the impeller and the main shaft according to claim 1 , wherein the tie rod positioning pin is an oblique pin with a large upper and a lower small, and correspondingly, the first positioning hole The second positioning hole and the upper one are big inclined holes and the lower one is small. 3.根据权利要求1所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述锁紧螺母在周向上至少对称设有两第三定位孔，所述叶轮锁紧端中心沉孔的底面上至少对称设有两与所述第三定位孔在周向位置上一一对应的第四定位孔，所述第三定位孔中从上到下依次设有压紧螺钉、弹簧和螺母定位销，当所述第三定位孔与第四定位孔在周向上一一对应时，所述螺母定位销部分插入所述第四定位孔中、部分位于所述第三定位孔中，所述压紧螺钉通过弹簧压紧顶抵在所述螺母定位销的顶部。3 . The end face tooth connection structure with positioning function between the impeller and the main shaft according to claim 1 , wherein the locking nut is provided with at least two third positioning holes symmetrically in the circumferential direction, and the impeller is locked. 4 . At least two fourth positioning holes corresponding to the third positioning holes in the circumferential position are symmetrically arranged on the bottom surface of the end center counterbore, and pressing screws are arranged in the third positioning holes in sequence from top to bottom. , a spring and a nut positioning pin, when the third positioning hole and the fourth positioning hole are in one-to-one correspondence in the circumferential direction, the nut positioning pin is partially inserted into the fourth positioning hole and partially located in the third positioning hole wherein, the pressing screw is pressed against the top of the nut positioning pin by a spring. 4.根据上述权利要求所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述锁紧螺母的第三定位孔中至少设有一位于底部的第一台阶部，所述螺母定位销的底部设有一柱状定位凸起，所述柱状定位凸起穿过所述第一台阶部插入所述第四定位孔中。4. The end-face tooth connection structure with positioning function between the impeller and the main shaft according to the above claim, wherein the third positioning hole of the locking nut is provided with at least one first step at the bottom, so The bottom of the nut positioning pin is provided with a cylindrical positioning protrusion, and the cylindrical positioning protrusion is inserted into the fourth positioning hole through the first step portion. 5.根据权利要求4所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述紧螺母的第三定位孔中还设有一位于所述第一台阶部上方的第二台阶部，所述压紧螺钉的底部设有一柱状延伸部，所述柱状延伸部穿过所述第二台阶部顶抵在所述弹簧的顶部，所述弹簧的底部压紧顶抵在所述螺母定位销的顶部。5 . The end face tooth connection structure with positioning function between the impeller and the main shaft according to claim 4 , wherein the third positioning hole of the tightening nut is further provided with a third positioning hole located above the first step portion. 6 . Two stepped parts, the bottom of the compression screw is provided with a cylindrical extension part, the cylindrical extension part passes through the second stepped part and abuts against the top of the spring, and the bottom of the spring presses against the top of the spring. the top of the nut dowel pin. 6.根据权利要求1所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述锁紧螺母的中心孔底部边缘处设有一锥形斜面，所述锥形斜面用以保证所述拉杆和锁紧螺母尽量在主轴中心线上，从而减小不平衡量。6 . The end-face tooth connection structure with positioning function between the impeller and the main shaft according to claim 1 , wherein the bottom edge of the center hole of the locking nut is provided with a conical inclined surface, and the conical inclined surface is used for 6. 6 . In order to ensure that the tie rod and the lock nut are on the center line of the main shaft as much as possible, so as to reduce the amount of unbalance. 7.根据权利要求1所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述锁紧螺母定位销的尾端设置有用以与拔销器配合的螺纹孔。7 . The end face tooth connection structure with positioning function between the impeller and the main shaft according to claim 1 , wherein the tail end of the positioning pin of the locking nut is provided with a threaded hole for matching with a pin puller. 8 . 8.根据权利要求1所述的叶轮与主轴之间带定位功能的端面齿连接结构，其特征在于，所述压紧螺母的尾端设有用以与内六角扳手配合的内六角孔。8 . The end-face tooth connection structure with positioning function between the impeller and the main shaft according to claim 1 , wherein the rear end of the compression nut is provided with a hexagon socket hole for matching with a hexagon socket wrench. 9 .
CN202110689233.7A 2021-06-22 2021-06-22 End face tooth connecting structure with positioning function between impeller and main shaft Active CN113280000B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110689233.7A CN113280000B (en) 2021-06-22 2021-06-22 End face tooth connecting structure with positioning function between impeller and main shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110689233.7A CN113280000B (en) 2021-06-22 2021-06-22 End face tooth connecting structure with positioning function between impeller and main shaft

Publications (2)

Publication Number Publication Date
CN113280000A true CN113280000A (en) 2021-08-20
CN113280000B CN113280000B (en) 2022-09-16

Family

ID=77285207

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110689233.7A Active CN113280000B (en) 2021-06-22 2021-06-22 End face tooth connecting structure with positioning function between impeller and main shaft

Country Status (1)

Country Link
CN (1) CN113280000B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115341966A (en) * 2022-06-27 2022-11-15 中国航发哈尔滨东安发动机有限公司 Turbine impeller over-rotation test fixture

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191018349A (en) * 1910-08-03 1911-06-01 Siemens Brothers Dynamo Works Improvements in Centrifugal Fans.
GB1070558A (en) * 1963-11-28 1967-06-01 Flux Geraetebau Gmbh A pump in particular for thin and medium viscosity liquids
CN201599258U (en) * 2009-11-20 2010-10-06 无锡压缩机股份有限公司 Coupling structure between impeller and high-speed rotating shaft on high-speed centrifugal compressor
CN102852849A (en) * 2012-09-14 2013-01-02 西安航空动力股份有限公司 Coupler for eliminating balance clearance of fan rotor
CN104373378A (en) * 2014-09-11 2015-02-25 大连工业大学 Semi-open type impeller and main shaft connection device and rotor of centrifugal compressor and installation method
CN106545520A (en) * 2016-10-31 2017-03-29 沈阳鼓风机集团股份有限公司 Compressor impeller and pinion shaft attachment structure and its processing method
CN107355419A (en) * 2017-06-27 2017-11-17 北京航空航天大学 A kind of high-speed magnetic levitation draught fan impeller locking mechanism
CN110259718A (en) * 2019-07-29 2019-09-20 重庆江增船舶重工有限公司 Vapour compression machine compression impellor combined type overspeed test tool and its application method
CN212748273U (en) * 2020-06-30 2021-03-19 杭州兴鑫科技有限公司 Tool for impeller overspeed test

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191018349A (en) * 1910-08-03 1911-06-01 Siemens Brothers Dynamo Works Improvements in Centrifugal Fans.
GB1070558A (en) * 1963-11-28 1967-06-01 Flux Geraetebau Gmbh A pump in particular for thin and medium viscosity liquids
CN201599258U (en) * 2009-11-20 2010-10-06 无锡压缩机股份有限公司 Coupling structure between impeller and high-speed rotating shaft on high-speed centrifugal compressor
CN102852849A (en) * 2012-09-14 2013-01-02 西安航空动力股份有限公司 Coupler for eliminating balance clearance of fan rotor
CN104373378A (en) * 2014-09-11 2015-02-25 大连工业大学 Semi-open type impeller and main shaft connection device and rotor of centrifugal compressor and installation method
CN106545520A (en) * 2016-10-31 2017-03-29 沈阳鼓风机集团股份有限公司 Compressor impeller and pinion shaft attachment structure and its processing method
CN107355419A (en) * 2017-06-27 2017-11-17 北京航空航天大学 A kind of high-speed magnetic levitation draught fan impeller locking mechanism
CN110259718A (en) * 2019-07-29 2019-09-20 重庆江增船舶重工有限公司 Vapour compression machine compression impellor combined type overspeed test tool and its application method
CN212748273U (en) * 2020-06-30 2021-03-19 杭州兴鑫科技有限公司 Tool for impeller overspeed test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115341966A (en) * 2022-06-27 2022-11-15 中国航发哈尔滨东安发动机有限公司 Turbine impeller over-rotation test fixture
CN115341966B (en) * 2022-06-27 2025-01-07 中国航发哈尔滨东安发动机有限公司 Turbine impeller overspin test fixture

Also Published As

Publication number Publication date
CN113280000B (en) 2022-09-16

Similar Documents

Publication Publication Date Title
CN202985135U (en) Processing jig of inner holes of thin-wall sleeve type elements
KR101983767B1 (en) Exhaust-gas turbocharger
CN113280000A (en) End face tooth connecting structure with positioning function between impeller and main shaft
CN215521360U (en) End face tooth connecting structure with positioning function between impeller and main shaft
CN110259718B (en) Combined overspeed test tool for air compressing impeller of steam compressor and using method thereof
CN210210101U (en) Repairing tool for airplane actuating cylinder
CN204495230U (en) Engine crankshaft flange hole position detecting tool
CN204277865U (en) A kind of fastening positioning device
CN102748398A (en) Combined bearing clearance accurate adjustment nut for eliminating run-out errors
CN211347179U (en) Crankshaft hot-mounting flange torque detection device
CN215570593U (en) Sealing device for throat part of combustion chamber
CN106884847B (en) The embedded removable fixing structure of engine of one kind and its assembly or disassembly method
CN210290231U (en) Combined overspeed test tool for compressed air impeller of steam compressor
CN210509886U (en) a stud bolt
CN111843870B (en) Miniature solenoid valve test fixture
CN205246436U (en) A anchor clamps for projection nut compression test
CN119238974A (en) A C-shaped blade root gasket gluing assembly device
CN219932617U (en) Axial force generating cylinder
CN222277375U (en) Tensioning connecting device and support mechanism thereof
CN201371429Y (en) Integrated hole pressed positioning pin component
CN109483445B (en) Gapless butting and pressing device for radome and assembling method
CN109352364A (en) A kind of reverse drawing fixture
CN206723351U (en) The vehicle balance axle idle pulley assembly easily assembled
CN219027380U (en) Turbine rotor assembly tool
CN215950107U (en) Combined shaft sleeve and structural strength measuring device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant