Transmission shaft middle power output connecting structure

Abstract

A power output connecting structure in the middle of a transmission shaft comprises a power output ring and a locking ring, the power output ring is provided with an outer taper sleeve, and the locking ring is provided with an inner taper hole; the power output ring and the locking ring are fixedly connected through an axial connecting bolt, and the power output ring is fixedly connected with the transmission shaft by matching an outer taper sleeve of the power output ring with the conical surface of an inner taper hole of the locking ring; the power output connecting structure in the middle of the transmission shaft has the advantages of few parts, light overall weight and low cost, so that the assembly difficulty is greatly reduced during field operation, and meanwhile, the economic benefits of enterprises are also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaft parts power output structure, concretely relates to a transmission shaft middle part power output connecting structure. BACKGROUND

[0002] The existing ship adds one or more power output structures on the original propeller transmission shaft, sets a tension sleeve assembly between the round hole of the power output structure and the transmission shaft, realizes the fixed connection between the power output structure and the transmission shaft through the taper surface cooperation between the tension sleeve assembly, the existing structure design has the problems that: the circular body of the power output structure bears great tension, so the wall thickness is thick, which leads to the large weight of the power output structure; in addition, the tension sleeve assembly includes an inner ring, an outer ring and a middle ring, so there are problems of many parts and large weight.

[0003] Due to the existence of the problem of the large weight of the power output structure added on the original propeller transmission shaft, and the limited space for on-site operation, the on-site assembly is abnormally difficult; in addition, the problems of the large weight of the power output structure and the many parts also lead to high overall material cost and processing cost, which also affects the economic benefit of the enterprise. INVENTION CONTENTS

[0004] In order to overcome the deficiencies in the background art, the utility model discloses a transmission shaft middle part power output connecting structure, which optimizes the structure design to reduce the number of power output structures, the overall weight, the cost and the difficulty of on-site assembly.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a transmission shaft middle part power output connecting structure, including a power output ring and a locking ring; the power output ring is provided with an outer taper sleeve, and the locking ring is provided with an inner taper hole; the power output ring is arranged on the outer circular surface of the transmission shaft, the locking ring is arranged on the outer side of the outer taper sleeve, the power output ring and the locking ring are fixedly connected through axial connecting bolts, and the power output ring and the transmission shaft are fixedly connected through the taper surface cooperation between the outer taper sleeve and the inner taper hole.

[0006] Further, the power output ring and the locking ring are split structure; the number of split parts of the power output ring and the locking ring is more than 2.

[0007] Further, corresponding buckling joints and buckling grooves are arranged between the split joint surfaces of adjacent locking rings.

[0008] Further, semicircular joint holes A and B are arranged between the split joint surfaces of adjacent locking rings; the joint holes A and B are all fine hinge round holes, conical holes or threaded holes.

[0009] Preferably, locking ring connecting holes are arranged between the split joint surfaces of adjacent locking rings around the axis.

[0010] Further, two groups of connecting holes are correspondingly arranged between the power output ring and the locking ring.

[0011] Further, the power output ring is uniformly provided with power output connecting holes around the axis.

[0012] Further, the power output ring is provided with an outer taper sleeve on one side or both sides.

[0013] Further, the power output ring is provided with alignment holes on the split joint surface.

[0014] Further, assembly positioning holes and disassembly ejection holes are correspondingly arranged between the power output ring and the locking ring along the axial direction.

[0015] Due to the adoption of the technical scheme as above, the utility model has the following beneficial effects: the utility model discloses a transmission shaft middle part power output connecting structure, including power output ring, locking ring, power output ring is equipped with outer taper sleeve, locking ring is equipped with inner taper hole, power output ring, locking ring is fixedly connected through axial connecting bolt, utilizes the taper surface cooperation of outer taper sleeve and inner taper hole, realizes the fixed connection of power output ring and transmission shaft, and this transmission shaft middle part power output connecting structure has the advantages of few parts, light overall weight and low cost, so that the on-site assembly difficulty is greatly reduced, and the enterprise economy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an appearance schematic view of the transmission shaft middle part power output connecting structure of the first embodiment.

[0017] Figure 2 It is an exploded view of the transmission shaft middle part power output connecting structure of the first embodiment.

[0018] Figure 3 It is a cross-sectional view of the transmission shaft middle part power output connecting structure of the first embodiment.

[0019] Figure 4 It is an appearance schematic view of the power output ring of the first embodiment.

[0020] Figure 5 It is an appearance schematic view of the locking ring of the first embodiment.

[0021] Figure 6 It is an appearance schematic view of the transmission shaft middle part power output connecting structure of the second embodiment.

[0022] Figure 7 It is an exploded view of the transmission shaft middle part power output connecting structure of the second embodiment.

[0023] Figure 8 It is an appearance schematic view of the power output ring of the second embodiment.

[0024] Figure 9 Split appearance schematic diagram of locking ring for example two;

[0025] Figure 10 Split appearance schematic diagram of locking ring for example two;

[0026] Figure 11 Split appearance schematic diagram of locking ring for example two;

[0027] Figure 12 Split appearance schematic diagram of locking ring for example two;

[0028] Figure 13 Split appearance schematic diagram of locking ring for example two;

[0029] Figure 14 Split appearance schematic diagram of locking ring for example two;

[0030] Figure 15 Split appearance schematic diagram of locking ring for example two;

[0031] Figure 16 Split appearance schematic diagram of locking ring for example two;

[0032] Figure 17 Split appearance schematic diagram of locking ring for example two;

[0033] Figure 18 Split appearance schematic diagram of locking ring for example two.

[0034] In the figure: 1, power output ring; 1.1, power output ring body; 1.1.1, output ring axial connecting hole; 1.1.2, power output connecting hole; 1.1.3, output ring ejection hole; 1.1.4, output ring assembly positioning hole; 1.2, outer taper sleeve; 1.3, output ring alignment hole; 1.4, output ring assembly lifting hole; 2, locking ring; 2.1, inner taper hole; 2.2, locking ring axial connecting hole; 2.3, locking ring assembly lifting hole; 2.4, locking ring ejection hole; 2.5, locking ring connecting hole; 2.6, locking ring assembly positioning hole; 2.7, buckle joint; 2.8, buckle joint groove; 2.9, splicing hole A; 2.10, splicing hole B; 3, transmission shaft. DETAILED DESCRIPTION

[0035] The utility model can be explained in detail through the following examples, the purpose of the utility model is to protect all technical improvements within the scope of the utility model.

[0036] Example one, see the description of the accompanying drawings Figures 1-5 :

[0037] Referring to the drawings Figures 1-3 : A power output connection structure in the middle of a transmission shaft, comprising a power output ring 1 and a locking ring 2; referring to the drawings Figure 4 : The power output ring 1 is a complete annular structure, with a through hole in the middle, comprising a power output ring body 1.1 and an outer taper sleeve 1.2, which are an integral structure; the outer taper sleeve 1.2 is arranged at both ends of the power output ring body 1.1, and the outer circular surface thereof is a conical surface; the structure design of the power output ring 1 actually cancels the thick-walled annular body of the power output structure, and combines the inner ring of the existing expansion sleeve assembly for power output connection in the middle of the transmission shaft on the power output structure, so that the weight of the power output ring 1 is greatly reduced; the end surface of the power output ring 1 is provided with two groups of output ring axial connection holes 1.1.1 around the axis thereof, and the pitch circles of the two groups of output ring axial connection holes 1.1.1 are concentrically arranged; in this embodiment, the output ring axial connection holes 1.1.1 located on the inner circle pitch circle are through holes, and the output ring axial connection holes 1.1.1 located on the outer circle pitch circle are threaded holes, wherein a plurality of output ring assembly positioning holes 1.1.4 are also arranged at intervals on the outer circle pitch circle; the power output ring 1 is also uniformly provided with power output connection holes 1.1.2 around the axis thereof close to the outer circumferential end surface, and the power output connection holes 1.1.2 are used for fixed connection with the generator rotor; a plurality of output ring ejection holes 1.1.3 are also arranged at intervals on the pitch circle of the power output connection holes 1.1.2, and the holes are threaded holes and are used for disassembling the generator rotor; when the generator rotor is disassembled, the generator rotor is lifted down by screwing in a bolt; referring to the drawings Figure 5 : The locking ring 2 is a complete annular structure, with an inner taper hole 2.1 in the middle; the structure design of the locking ring 2 actually replaces the outer ring and the middle ring (actually cancels the original outer ring and the middle ring) of the existing expansion sleeve assembly for power output connection in the middle of the transmission shaft with the thick-walled annular body of the original power output structure, so that the number of parts of the power output connection structure in the middle of the transmission shaft is reduced, and the overall weight is reduced; the end surface of the locking ring 2 is provided with two groups of locking ring axial connection holes 2.2 around the axis thereof, and the two groups of locking ring axial connection holes 2.2 correspond to the two groups of output ring axial connection holes 1.1.1 in position, wherein a plurality of locking ring ejection holes 2.4 are also arranged at intervals on the inner circle pitch circle, and the locking ring ejection holes 2.4 are threaded holes and are used for disassembling the locking ring 2; wherein a plurality of locking ring assembly positioning holes 2.6 are also arranged at intervals on the outer circle pitch circle; the locking ring 2 is provided with two, wherein the locking ring axial connection holes 2.2 of one of the locking rings 2 are all through holes, and the locking ring axial connection holes 2.2 of the other locking ring 2 located on the inner circle pitch circle are threaded holes, and the locking ring axial connection holes 2.2 located on the outer circle pitch circle are through holes; a plurality of locking ring assembly lifting holes 2.3 are also arranged on the outer circumferential surface of the locking ring 2, which are convenient for lifting during assembly;

[0038] The power output ring 1 is arranged on the outer circular surface of the transmission shaft 3, the locking ring 2 is arranged on the two end surfaces of the power output ring 1, the inner tapered hole 2.1 of the locking ring 2 is matched with the outer tapered sleeve 1.2 of the power output ring 1, the locking ring assembly positioning hole 2.6 and the output ring assembly positioning hole 1.1.4 are inserted with the positioning pin, the axial connection hole 2.2 of the locking ring is aligned with the axial connection hole 1.1.1 of the output ring, then the connecting bolt is inserted, in the embodiment, the corresponding inner ring connection hole between the power output ring 1 and the locking ring 2 is provided with one bolt, the bolt passes through the through hole of one locking ring 2 and the power output ring 1, and is screwed into the threaded hole of the other locking ring 2, the corresponding outer ring connection hole between the power output ring 1 and the locking ring 2 is provided with two bolts which are inserted through the through hole of the locking ring 2 and are screwed into the threaded hole of the power output ring 1, after all the bolts are inserted, the connecting bolts are sequentially and repeatedly tightened in the clockwise or counterclockwise direction in the axial symmetry mode, the locking ring 2 is driven to move along the axis of the transmission shaft 3 to the direction of the power output ring 1, the pressure is generated by the matching of the tapered surfaces of the inner tapered hole 2.1 and the outer tapered sleeve 1.2, the inner hole of the outer tapered sleeve 1.2 is tightly held on the transmission shaft 3, at the same time, great pressure is generated between the locking ring 2 and the contact surface of the power output ring body 1.1, the fixed connection of the power output ring 1 and the transmission shaft 3 is realized, and the fixed connection of the power output ring 1 and the locking ring 2 is realized (the fixed connection surface of the power output ring 1 and the locking ring 2 includes two parts: the tapered hole of the locking ring 2 and the tapered surface of the outer tapered sleeve 1.2, and the contact surface of the locking ring 2 and the power output ring body 1.1);

[0039] It is additionally explained that: when the power is output from the middle part of the transmission shaft, the power output ring body 1.1 bears great torque load, the outer tapered sleeve 1.2 is a thin-walled structure, the geometric area (annular) of the connection part of the outer tapered sleeve 1.2 and the power output ring body 1.1 is small, and the shear force provided by the material (annular) of the connection part of the outer tapered sleeve 1.2 and the power output ring body 1.1 is insufficient to overcome the torque load borne by the power output ring body 1.1, therefore, there are two paths for the load transmission of the power output connection structure of the middle part of the transmission shaft: one is the shear force of the connection material between the outer tapered sleeve 1.2 and the power output ring body 1.1, and the other is the friction force between the conical surface of the outer tapered sleeve 1.2 and the inner tapered hole 2.1 of the locking ring 2, and the friction force between the contact surface of the locking ring 2 and the power output ring body 1.1;

[0040] When the transmission shaft 3 rotates, the transmission shaft 3 drives the outer cone sleeve 1.2 to rotate with the transmission shaft 3 by the friction between the outer cone sleeve 1.2 and the inner hole of the outer cone sleeve 1.2; the outer cone sleeve 1.2 transmits part of the torque to the power output ring body 1.1 through the shear force of the connecting material between the outer cone sleeve 1.2 and the power output ring body 1.1, and the outer cone sleeve 1.2 transmits part of the torque to the locking ring 2 through the friction between the outer cone surface of the outer cone sleeve 1.2 and the inner cone hole 2.1 of the locking ring 2, and the locking ring 2 transmits another part of the torque to the power output ring body 1.1 through the friction between the abutting surfaces of the locking ring 2 and the power output ring body 1.1, finally ensuring the reliability of the power output of the transmission shaft 3.

[0041] In this embodiment, the transmission shaft middle power output connecting structure only includes one power output ring 1 and two locking rings 2, greatly reducing the number of parts, reducing the overall weight of the connecting structure, reducing the cost of the transmission shaft middle power output connecting structure, greatly reducing the difficulty of on-site assembly, thereby improving the economic efficiency of the enterprise; in addition, the two groups of connecting holes corresponding to the power output ring 1 and the locking ring 2 are provided, which not only realizes the axial connection of the power output ring 1 and the locking ring 2, but also takes advantage of the larger diameter of the indexing circle where the outer ring connecting hole is located to reinforce the strength of the power output ring 1 in the diameter direction, so as to solve the problem of strength reduction of the power output ring 1 after the original thick-walled ring-shaped body is cancelled.

[0042] Embodiment two, see the description of the accompanying drawings Figures 6-9 :

[0043] In this embodiment, the power output ring 1 and the locking ring 2 are split structure, the number of splits is two, and the power output ring 1 and the locking ring 2 are both semi-circular ring structure; in order to ensure that the semi-circular ring structure of the power output ring 1 and the locking ring 2 is accurately positioned during assembly, the output ring positioning hole 1.3 is correspondingly arranged on the split joint surface of the power output ring 1, and the locking ring connecting hole 2.5 is correspondingly arranged on the split joint surface of the locking ring 2; the locking ring connecting hole 2.5 on the split joint surface of one of the locking rings 2 is a threaded hole, and the locking ring connecting hole 2.5 on the split joint surface of the other locking ring 2 is a stepped hole (used for passing through an inner hexagonal bolt, wherein the small diameter hole is a fine turning hole); after the two splits of the locking ring 2 are jointed, they are fixedly connected through a bolt, forming a whole circular ring structure; in the split structure of the locking ring 2 in this embodiment, there is no need to arrange a flange edge for connecting the two split structures on the two split structures of the locking ring 2, so that the split structure of the locking ring 2 is processed, that is, after the complete locking ring 2 is obtained through turning and boring, the two split structures of the locking ring 2 are obtained through wire cutting; compared with the locking ring 2 with a connecting flange edge obtained through welding in the past or the locking ring 2 with a connecting flange edge obtained through a machining center, the processing cost of the split structure of the locking ring 2 is greatly reduced; in addition, in order to facilitate hoisting during assembly, the output ring assembly lifting hole 1.4 is further arranged on the split joint surface of the power output ring 1, and the locking ring assembly lifting hole 2.3 is further arranged on the outer circumferential surface of the locking ring 2;

[0044] During assembly of the middle power output connecting structure of the transmission shaft in this embodiment, the two splits of the power output ring 1 are arranged in an up-down manner, the two splits of the locking ring 2 are arranged in a front-rear manner, and the joint seams of the power output ring 1 and the locking ring 2 are in a perpendicular state; the specific assembly steps are as follows:

[0045] S21, splice the power output ring 1: one split of the power output ring 1 is arranged at the lower part of the transmission shaft 3, and is fixed after being supported by an assembly support, then a positioning pin is inserted into the output ring positioning hole 1.3, and then the other split of the power output ring 1 is arranged at the upper part of the transmission shaft 3, the split joint surfaces of the two splits of the power output ring 1 are opposite to each other, and the split joint surfaces of the two splits of the power output ring 1 are aligned through the positioning pin;

[0046] S22, splice the left end of the power output ring 1 locking ring 2: with a lifting appliance, a piece of locking ring 2 is set behind the transmission shaft 3, and another piece of locking ring 2 is set in front of the transmission shaft 3, the splice surface of the two pieces of locking ring 2 is opposite, the two pieces of locking ring 2 are fixed and connected as a whole ring structure by using hexagon socket head cap screws through the locking ring connecting hole 2.5, and the splice surface of the two pieces of locking ring 2 is aligned; when splicing the locking ring 2, a metal backing plate is arranged between the splice surfaces to compensate for the machining error caused by the wire cutting seam, so that the inner taper hole 2.1 in the whole locking ring 2 after connection maintains its original machining size, precision and shape, and the output torque of the transmission shaft middle part power output connection structure after assembly is ensured; after the splice of the left end of the power output ring 1 locking ring 2 is completed, it is arranged on the assembly moving support; the assembly moving support is pushed to move along the axial direction of the transmission shaft 3, so that the inner taper hole 2.1 is in contact with the conical surface of the outer taper sleeve 1.2;

[0047] S23, splice the right end of the power output ring 1 locking ring 2: the splicing method of the right end of the power output ring 1 locking ring 2 is the same as that of S2; after the splice of the right end of the power output ring 1 locking ring 2 is completed, it is arranged on the assembly moving support; the assembly moving support is pushed to move along the axial direction of the transmission shaft 3, so that the inner taper hole 2.1 is in contact with the conical surface of the outer taper sleeve 1.2;

[0048] S24, power output ring 1, locking ring 2 connecting hole positioning: the positioning pin is inserted from one end of the locking ring assembly positioning hole 2.6, passes through the output ring assembly positioning hole 1.1.4, and is inserted into the other end of the locking ring assembly positioning hole 2.6, so as to complete the power output ring 1, locking ring 2 connecting hole positioning;

[0049] S25, locking and fixing of the power output ring 1 and the locking ring 2: insert the connecting bolt; in the symmetrical manner around the axial direction, sequentially and multiple times, tighten the connecting bolt in the clockwise or counterclockwise direction, drive the left and right end locking rings 2 to move synchronously along the axial line of the transmission shaft 3 to the direction of the power output ring 1, and use the taper surface cooperation of the inner taper hole 2.1 and the outer taper sleeve 1.2 to make the inner hole of the outer taper sleeve 1.2 tightly hold the transmission shaft 3, so as to realize the fixed connection of the power output ring 1 and the transmission shaft 3.

[0050] In this embodiment, the load transmission path of the transmission shaft middle part power output connection structure is the same as that of embodiment one, which will not be repeated; in this embodiment, the number of the split pieces of the power output ring 1 and the locking ring 2 can also be set to three; when the number of the split pieces is set to three, the included angle between the splice joint of the power output ring 1 and the splice joint of the locking ring 2 is 60°; when the number of the split pieces is set to three, the three pieces of the locking ring 2 need to be fixed and connected by bolts to form a complete locking ring 2.

[0051] Embodiment three, refer to the description Figure 10 、 11

[0052] ​In this embodiment, the power output ring 1 and the locking ring 2 are split structure, the number of split is two, the power output ring 1 and the locking ring 2 are both half ring structure; in order to ensure the accurate alignment of the half ring structure power output ring 1 in the assembly process, the output ring alignment hole 1.3 is correspondingly provided on the split joint surface of the power output ring 1; in order to ensure the connection and alignment of the half ring structure locking ring 2 in the assembly process, the buckle joint 2.7 and the buckle slot 2.8 are correspondingly provided between the split joint surfaces of the locking ring 2, and the half circular joint holes A2.9 and B2.10 are correspondingly provided between the split joint surfaces of the locking ring 2, the joint holes A2.9 and B2.10 are all fine round holes, conical holes or threaded holes; when the two halves of the locking ring 2 are connected, the two halves of the locking ring 2 are buckled together through the corresponding buckle joint 2.7 and buckle slot 2.8 on the adjacent joint surfaces, and then the two halves of the locking ring 2 are fixedly connected by inserting cylindrical pins, conical pins or bolts into the fine round holes, conical holes or threaded holes; the connection structure of the split locking ring 2 in this embodiment has the following advantages: 1, the processing cost of the locking ring 2 is low (same as embodiment two); 2, the connection strength between the two halves of the locking ring 2 is higher, which can be used to transmit greater torque; 3, through the cooperation of the cylindrical pins, conical pins or bolts in the joint holes A2.9 and B2.10, the processing error caused by the wire cutting seam can be eliminated, so that the inner taper hole 2.1 in the whole locking ring 2 after connection maintains its original processing size, precision and shape, fully ensuring the output torque of the middle power output connection structure of the transmission shaft after assembly;

[0053] Supplementary explanation: for the principle of eliminating the processing error caused by the wire cutting seam through the cooperation of the cylindrical pins, conical pins or bolts in the joint holes A2.9 and B2.10, see the attached Figure 13 、 14 , 15, 16: when the complete locking ring 2 is processed into two halves of the locking ring 2 by wire cutting, in order to improve the cutting efficiency, fast wire cutting is adopted, and the cutting seam δ is about 0.2mm; see the attached Figure 13 、 14 , if the joint holes A2.9 and B2.10 are assembled with cylindrical pins, conical pins or bolts, the inner taper hole 2.1 hole wall will be subjected to pressure after assembly, causing the two halves of the locking ring 2 to move to the left and right sides, the inner sides of the two buckle joints 2.7 abut, and the design diameter D of the inner taper hole 2.1 in the left and right directions becomes D+δ, i.e. the design diameter D of the inner taper hole 2.1 in the left and right directions increases by 0.2mm, which will seriously affect the locking force of the locking ring 2 after jointing, thereby affecting the output torque of the middle power output connection structure of the transmission shaft after assembly; see the attached Figure 15 、 16, even if the inner taper hole 2.1 hole wall is subjected to pressure after assembly, due to the supporting action of the cylindrical pin, conical pin or bolt, there will always be a line cutting gap δ between the inner side of the two buckle joints 2.7 adjacent surfaces, so that the design diameter D of the inner taper hole 2.1 in the left and right directions remains unchanged after assembly, so that the inner taper hole 2.1 in the whole locking ring 2 after connection maintains its original processing size, precision and shape, which fully guarantees the output torque of the power output connection structure in the middle of the transmission shaft after assembly; In addition, when only the splicing hole B 2.10 is provided, the line cutting gap δ between the inner side of the two buckle joints 2.7 adjacent surfaces can always exist, but the two halves of the locking ring 2 cannot become a whole during assembly (when there is no splicing hole A 2.9, the line cutting gap δ between the outer side of the two buckle joints 2.7 adjacent surfaces cannot be maintained, and the two halves of the locking ring 2 still move left and right, making the cylindrical pin, conical pin or bolt in the splicing hole B 2.10 loose), when locking the axial connection bolt, it cannot guarantee the synchronous movement of the two halves of the locking ring 2 in the axial direction of the transmission shaft 3, so it will still affect the final assembly result, so it cannot fully guarantee the output torque of the power output connection structure in the middle of the transmission shaft after assembly; That is, in this embodiment, splicing hole A 2.9 and splicing hole B 2.10 must exist at the same time to fully guarantee the locking force of the power output connection structure in the middle of the transmission shaft after assembly;

[0054] When the power output connection structure in the middle of the transmission shaft of this embodiment is assembled, the two halves of the power output ring 1 are arranged in an upper and lower manner, the two halves of the locking ring 2 are arranged in a front and rear manner, and the splicing joint of the power output ring 1 and the splicing joint of the locking ring 2 are in a vertical state; The specific assembly steps are as follows:

[0055] S31, splice the power output ring 1: set one half of the power output ring 1 at the lower part of the transmission shaft 3, fix it with the assembly support, then insert the positioning pin into the output ring positioning hole 1.3, and then set the other half of the power output ring 1 at the upper part of the transmission shaft 3, with the splicing surfaces of the two halves of the power output ring 1 opposite to each other, and the splicing surfaces of the two halves of the power output ring 1 aligned through the positioning pin;

[0056] S32, splice the locking ring 2 at the left end of the power output ring 1: use a lifting device to set one half of the locking ring 2 at the rear side of the transmission shaft 3, use a lifting device to set the other half of the locking ring 2 at the front side of the transmission shaft 3, the two halves of the locking ring 2 are connected through the buckle joint 2.7 and the buckle groove 2.8, and are arranged on the assembly moving support; The end faces of the two halves of the locking ring 2 are aligned through the positioning end faces of the assembly moving support, then cylindrical pins, conical pins or bolts are inserted into the splicing hole A 2.9 and the splicing hole B 2.10, and the two halves of the locking ring 2 are fixedly connected as a whole structure; After the splicing of the locking ring 2 at the left end of the power output ring 1 is completed, the assembly moving support is pushed to move along the axial direction of the transmission shaft 3, so that the conical surface of the inner taper hole 2.1 is in contact with the conical surface of the outer taper sleeve 1.2;

[0057] S33, splice the locking ring 2 at the right end of the power output ring 1: the splicing method of the locking ring 2 at the right end of the power output ring 1 is the same as S2; after the splicing of the locking ring 2 at the right end of the power output ring 1 is completed, the assembly moving support is pushed to move along the transmission shaft 3 in the axial direction, so that the conical surface of the inner conical hole 2.1 and the outer conical sleeve 1.2 is in contact;

[0058] S34, positioning of the connecting holes of the power output ring 1 and the locking ring 2: the positioning pin is inserted from the assembly positioning hole 2.6 of one end of the locking ring, passes through the assembly positioning hole 1.1.4 of the output ring, and is inserted into the assembly positioning hole 2.6 of the other end of the locking ring, so that the positioning of the connecting holes of the power output ring 1 and the locking ring 2 is completed;

[0059] S35, locking and fixing of the power output ring 1 and the locking ring 2: the connecting bolt is inserted; in a symmetrical manner around the axis, the connecting bolt is sequentially and repeatedly tightened in the clockwise or counterclockwise direction, so that the left and right end locking rings 2 are driven to move synchronously along the axis of the transmission shaft 3 to the direction of the power output ring 1, the inner hole of the outer conical sleeve 1.2 is clamped around the transmission shaft 3 by the cooperation of the conical surface of the inner conical hole 2.1 and the outer conical sleeve 1.2, and the fixed connection between the power output ring 1 and the transmission shaft 3 is realized.

[0060] Example four, see the attached drawings of the specification Figure 13 :

[0061] The structure of this example is basically the same as that of example one, except that the corresponding outer ring connecting holes between the power output ring 1 and the locking ring 2 are fixedly connected by only one bolt, the bolt passes through the through hole of one locking ring 2 and the power output ring 1, and is screwed into the threaded hole of the other locking ring 2.

[0062] Example five, see the attached drawings of the specification Figure 14 :

[0063] Compared with example one, the power output ring 1 of this example is provided with an outer conical sleeve 1.2 only on one side end face; this structure can be used in the case where the output load of the transmission shaft 3 is small, and can further reduce the overall weight of the power output connection structure in the middle of the transmission shaft.

[0064] It should be understood that the present scheme is not limited to the above specific embodiments, and the equipment, tools and structures not fully described should be understood as being implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications to the technical scheme of the present scheme by using the disclosed methods and technical contents, or modify it into equivalent examples with equivalent changes, without departing from the scope of the technical scheme of the present scheme, which does not affect the essential content of the present scheme; therefore, any simple modification, equivalent change and modification made to the above examples according to the technical essence of the present scheme, without departing from the content of the technical scheme of the present scheme, still belongs to the protection scope of the technical scheme of the present scheme.

[0065] The utility model is not detailed part of prior art.

Claims

1. A power take-off connection structure in a drive shaft, characterized by: The utility model relates to a power output ring (1), locking ring (2), power output ring (1) is equipped with outer taper sleeve (1.2), locking ring (2) is equipped with inner taper hole (2.1), power output ring (1) sets up in transmission shaft (3) outer circular surface, locking ring (2) sets up in the outside of outer taper sleeve (1.2), power output ring (1), locking ring (2) are fixedly connected through axial connecting bolt, and through the taper surface cooperation of outer taper sleeve (1.2) and inner taper hole (2.1), power output ring (1) is fixedly connected with transmission shaft (3).

2. The power take-off connection structure in the middle of the drive shaft according to claim 1, characterized in that: The power output ring (1) and the locking ring (2) are split structure; the power output ring (1) and the locking ring (2) are split more than two.

3. The power take-off connection structure in the middle of the drive shaft according to claim 2, characterized in that: Corresponding buckle joint (2.7) and buckle slot (2.8) are arranged between the split joint surfaces of adjacent locking rings (2).

4. The power take-off connection structure in the middle of the drive shaft according to claim 3, characterized in that: Corresponding semicircular joint holes A (2.9) and joint holes B (2.10) are arranged between the split joint surfaces of adjacent locking rings (2); the joint holes A (2.9) and the joint holes B (2.10) are all fine hinge round holes, conical holes or threaded holes.

5. The power take-off coupling structure for a driveshaft intermediate of claim 2, wherein: Corresponding locking ring connecting holes (2.5) are arranged between the split joint surfaces of adjacent locking rings (2).

6. The power take-off connection structure in the middle of the drive shaft according to any one of claims 1 to 5, characterized in that: Two groups of connecting holes are correspondingly arranged between the power output ring (1) and the locking ring (2) around the axis.

7. The power take off coupling structure for a propeller shaft according to claim 1, wherein: The power output ring (1) is uniformly provided with power output connecting holes (1.1.2) around the axis.

8. The power take off coupling structure for a propeller shaft according to claim 1, wherein: The power output ring (1) is provided with an outer taper sleeve (1.2) on one side or both sides.

9. The power take off connection structure in the middle of the drive shaft according to claim 2, characterized in that: Corresponding alignment holes are arranged on the split joint surfaces of the power output ring (1).

10. The power take off connection structure for a driveshaft intermediate of claim 1, wherein: Corresponding assembly positioning holes and disassembly ejection holes are arranged between the power output ring (1) and the locking ring (2) along the axial direction.

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