CN217649619U

CN217649619U - Detachable transmission shaft of special propeller for surfboard and propeller thereof

Info

Publication number: CN217649619U
Application number: CN202221601238.6U
Authority: CN
Inventors: 代勇; 杨威; 李雪岩; 梁晓军
Original assignee: Beijing Weilan Jizhi Technology Co ltd
Current assignee: Beijing Weilan Jizhi Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-10-25
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a detachable transmission shaft of a propeller special for surfboards and a propeller thereof, wherein the transmission shaft comprises a transmission shaft left end and a transmission shaft right end; a sealing element baffle ring, a transmission shaft dismounting ejection screw hole, a transmission shaft fixing through hole and a transmission shaft limiting groove are arranged at the left end of the transmission shaft; the right end of the transmission shaft comprises a propeller fixing screw hole, a transmission shaft fixing screw hole and a transmission shaft limiting boss; the transmission shaft limiting groove and the transmission shaft limiting boss are precisely matched and positioned, and the transmission shaft fixing screw hole penetrates through the transmission shaft fixing through hole to be fixed into the transmission shaft fixing screw hole. The utility model discloses a detachable transmission shaft structure adopts split type design, simplifies the installation, improves maintenance efficiency, and improve equipment's life.

Description

Detachable transmission shaft of special propeller for surfboard and propeller thereof

Technical Field

The utility model relates to a water jet propulsion equipment field, especially a special propeller's of surfboard transmission shaft dismantled.

Background

The existing propeller for surfboards drives a propeller to provide power for equipment by using a transmission shaft, and the transmission shaft usually adopts an integral transmission shaft. However, when the propeller is used in seawater, the power blades are randomly damaged by sundries such as aquatic weeds, fishing nets and stones in the seawater, and need to be maintained and replaced. However, the existing transmission shaft has the following disadvantages:

firstly, because the traditional transmission shafts all adopt an integral structure, and meanwhile, for the purpose of mechanical transmission with high stability and high reliability, interference fit is generally required in the installation process of the transmission shafts to avoid connection falling or to be capable of transmitting larger torque, so that a special installation tool is required to realize the tight fit of the transmission shafts and the bearings;

secondly, because the special power advancing device of this kind of marine surfboard of water jet propeller is several style commonly used structural style basically, and the structural arrangement is comparatively inseparable, chooses for use special installation or dismantles the frock and produce or maintain after sale, all need dismantle clean with peripheral corollary equipment in advance, provide operating space for dismantling the transmission shaft. Particularly, in the aspect of maintenance, great disassembly workload is needed, for example, a series of complex operations such as disassembling a hatch cover, disassembling a control module, disassembling a motor, disassembling a main shaft and the like are needed to realize maintenance and replacement, so that the maintenance difficulty is greatly increased, and the maintenance efficiency is reduced;

on the other hand, the integral transmission shaft has smaller diameter and longer length, and simultaneously needs to meet the requirement of high-precision machining size, so that the machining difficulty is greatly improved, and the cost is further increased; in addition, the integrally processed transmission shaft is easy to bend under the conditions of long-time high rotating speed and high torque, so that the service life of the integral equipment is shortened.

SUMMERY OF THE UTILITY MODEL

To above-mentioned integral transmission shaft because the multiple part of accessories such as installation screw, sealing member fender ring need several parts of many processing, has increased the assembly degree of difficulty, has reduced prior art problems such as reliability of production efficiency and part, the utility model provides a can dismantle transmission shaft for special propeller of surfboard. Through the split type structure capable of being disassembled and assembled circularly, the after-sale maintenance efficiency of the product is greatly improved.

In order to solve the prior art problems, the utility model provides a detachable transmission shaft of a propeller special for a surfboard, which is characterized in that the propeller comprises a transmission shaft left end (8) and a transmission shaft right end (9); a sealing element baffle ring (26), a transmission shaft fixing through hole (11) and a transmission shaft limiting groove (12) are arranged at the left end (8) of the transmission shaft, wherein a transmission shaft dismounting ejection screw hole (10) is formed in the transmission shaft limiting groove; a propeller fixing screw hole (21), a transmission shaft fixing screw hole (23) and a transmission shaft limiting boss (13) are arranged on the right end (9) of the transmission shaft; the transmission shaft limiting groove (12) on the left end (8) of the transmission shaft and the transmission shaft limiting boss (13) on the right end (9) of the transmission shaft can be matched and positioned, so that torque transmission of the left end (8) of the transmission shaft and the right end (9) of the transmission shaft is realized;

the detachable transmission shaft of the propeller special for the surfboard is also provided with a transmission shaft detaching ejection screw (19) matched with the transmission shaft detaching ejection screw hole (10) and a transmission shaft assembling screw (22) matched with the transmission shaft fixing through hole (11) and the transmission shaft fixing screw hole (23); and the transmission shaft assembling screw (22) penetrates through the transmission shaft fixing through hole (11) on the left end (8) of the transmission shaft and is fixed into the transmission shaft fixing screw hole (23) on the right end (9) of the transmission shaft.

Preferably, to detachable transmission shaft, its characterized in that, screw fixed screw (21) be four or more than four, wherein two screw fixed screw (21) are for perforating, other screw fixed screw (21) are the blind hole, transmission shaft fixed screw (23) are the fixed screw of sharing with fenestrate screw fixed screw (21).

Still preferably, to the detachable transmission shaft of the present invention, characterized in that the cross-sectional shape of the transmission shaft limit boss (13) is a triangle, a semicircle, a special shape, a rectangle, a square, or a quadrangle other than a square and a rectangle.

More preferably, to detachable transmission shaft, its characterized in that sets up screw (16) on transmission shaft right-hand member (9), screw fixed screw (20) pass screw (16) screw in screw fixed screw (21), realize screw (16) and transmission shaft right-hand member (9) fixed.

More preferably, the detachable transmission shaft of the utility model is characterized in that a coupling (5) is arranged on the left end (8) of the transmission shaft; the coupler (5) is connected with the driving motor (4), and the left end (8) of the transmission shaft is fixed with the driving motor (4) through the coupler (5) to realize torque transmission.

More preferably, the detachable transmission shaft of the utility model is characterized by further comprising a power module, wherein the power module comprises a power module cabin body (1) and a water-jet propeller module (2); the left end (8) of the transmission shaft is assembled in the power module cabin body (1), the right end (9) of the transmission shaft is assembled in the water-jet propeller module (2), and the driving motor (4) is assembled in the power module cabin body (1).

More preferably, to detachable transmission shaft, characterized in that, the water jet propeller module (2) is detachably fixed with the water jet propeller fixing screw hole (28) correspondingly arranged on the power module cabin body (1) through the water jet propeller fixing screw (27) on the connecting flange.

More preferably, to can dismantle transmission shaft, its characterized in that will ejecting screw (19) screw in is dismantled to the transmission shaft in ejecting screw (10) is dismantled to the transmission shaft, dismantle ejecting screw (19) top through the transmission shaft and be in transmission shaft right-hand member (9) on spacing boss (13) plane of transmission shaft, realize the dismantlement separation of transmission shaft.

The invention also provides a propeller, which comprises the detachable transmission shaft and is characterized by comprising a power module, wherein the power module comprises a power module cabin body (1) and a water-jet propeller module (2), and the power module cabin body (1) and the water-jet propeller module (2) are detachably fixed.

Adopt above-mentioned technical scheme, the utility model provides a special propeller of surfboard and detachable transmission shaft structure thereof has following beneficial effect: the design of a split type transmission shaft is adopted, so that the installation of various parts such as a propeller, a sealing element baffle ring and the like is simplified, the installation process is simplified, and the production efficiency is improved; when after maintenance is finished, peripheral supporting equipment does not need to be disassembled cleanly in advance, an operation space is not needed to be provided for disassembling the transmission shaft, and only the water spraying propulsion module needs to be disassembled independently, so that great disassembling workload is omitted, and the maintenance efficiency is greatly improved; the split type transmission shaft has lower length of each section, so that the machining difficulty is reduced, and the cost is further reduced; meanwhile, the transmission shaft processed in a split mode is not easy to bend under the conditions of long-time high rotating speed and high torque, reliability is improved, and the service life of the whole equipment is prolonged.

Drawings

Fig. 1 is a side view of the power module of the present invention;

FIG. 2 is a schematic sectional view of the power module according to the present invention;

FIG. 3 is a schematic sectional view of the power module according to the present invention in a disassembled state;

fig. 4 is an axial direction view of the power module in a disassembled state;

fig. 5 is a schematic view of the power module of the present invention showing another state axis for disassembly;

fig. 6 is a schematic side view of the transmission shaft in a disassembled state;

fig. 7 is a schematic side view of the transmission shaft according to another state of the present invention;

fig. 8a is a top perspective view of the transmission shaft of the present invention;

fig. 8b is a cross-sectional view of the transmission shaft of the present invention along the horizontal direction of the screw fixing holes of the propeller;

fig. 9 is a side sectional view of the transmission shaft of the present invention;

fig. 10 is a top sectional view of the transmission shaft of the present invention.

Description of the reference numerals

1-power module cabin, 2-water jet propeller module, 3-control module, 4-driving motor, 5-coupler, 6-transmission shaft: 7-waterjet propeller guide vanes, 8-drive shaft left end, 9-drive shaft right end, 10-drive shaft disassembly ejection screw hole, 11-drive shaft fixing through hole, 12-drive shaft limit groove, 13-drive shaft limit boss, 16-propeller, 18-drive shaft right end fixing screw, 19-drive shaft disassembly ejection screw, 20-propeller fixing screw, 21-propeller fixing screw hole, 22-drive shaft assembly screw, 23-drive shaft fixing screw hole, 24-power module hatch, 25-power module hatch fixing screw, 26-seal retainer ring, 27-waterjet propeller fixing screw, 28-waterjet propeller fixing screw hole.

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 10, fig. 1 is a side view of the power module of the present invention, and it can be seen that a water jet propeller module 1 is installed on a power module cabin 2; FIG. 2 is a schematic sectional view of the power module according to the present invention; fig. 3 is a schematic sectional view of the power module in a disassembled state; fig. 4 is an axial direction view of the power module in a disassembled state; fig. 5 is a schematic view of the power module of the present invention in another state;

the utility model discloses special propeller's of surfboard detachable transmission shaft structure, including transmission shaft 6, transmission shaft 6 divide into transmission shaft left end 8 and transmission shaft right-hand member 9. The left end 8 of the drive shaft includes a seal retainer ring 26 (shown in fig. 3), a drive shaft removal knockout screw hole 10, a drive shaft retention through hole 11, and a drive shaft retention groove 12 (shown in fig. 6 and 9). The sealing element baffle ring 26 is approximately arranged at the middle rear part of the left end 8 of the transmission shaft, and the specific figure 6 is a schematic axial side view of the transmission shaft in a disassembled state; fig. 7 is a schematic side view of the transmission shaft according to another state of the present invention; fig. 8a is a top perspective view of the transmission shaft of the present invention; fig. 8b is a cross-sectional view of the transmission shaft of the present invention along the horizontal direction of the screw fixing holes of the propeller; fig. 9 is a side sectional view of the transmission shaft of the present invention; fig. 10 is a top sectional view of the transmission shaft of the present invention.

As shown in fig. 4, one end of the left end 8 of the transmission shaft, which is far away from the sealing element retaining ring 26, is provided with a transmission shaft left end connecting portion, the center of the transmission shaft left end connecting portion is provided with a transmission shaft limiting groove 12, and the circumferential side position of the transmission shaft left end connecting portion, which is located in the transmission shaft limiting groove 12, is provided with the transmission shaft dismounting ejection screw hole 10 and the transmission shaft fixing through hole 11.

As shown in fig. 5, the right end 9 of the transmission shaft includes a propeller fixing screw hole 21 (see fig. 3 and 8a and 8b in particular), a transmission shaft fixing screw hole 23, and a transmission shaft limit boss 13. The transmission shaft right-hand member 9 with the one end that transmission shaft left end connecting portion matches sets up transmission shaft right-hand member connecting portion, transmission shaft right-hand member connecting portion central authorities outwards bulge and are provided with the spacing boss 13 of transmission shaft, the spacing boss 13 of transmission shaft and the spacing recess 12 cooperation location of transmission shaft. The transmission shaft fixing screw hole 23 is arranged at the position (as shown in fig. 7) of the periphery of the transmission shaft limiting boss 13 on the connecting part of the right end of the transmission shaft, and corresponds to the position of the transmission shaft fixing through hole 11. The cross-sectional shape of the drive shaft limiting boss 13 is preferably rectangular or square or other quadrilateral shape, and other suitable shapes, such as triangle, can also be adopted. As shown in fig. 8a, 8b and 9, the propeller fixing screw holes 21 may be four or more, and preferably are respectively and correspondingly disposed at positions outside the side edges of the transmission shaft limiting boss on the connection portion at the right end of the transmission shaft (for example, the four propeller screw holes 21 are respectively disposed outside the four side edges of the transmission shaft limiting boss 13), wherein two propeller fixing screw holes 21 are through holes, and the other two propeller fixing screw holes are blind holes, and the openings of the blind holes face the direction away from the connection portion at the left end of the transmission shaft. The transmission shaft fixing screw holes 23 may be set to two, for example, and are common fixing screw holes with the two screw-threaded propeller fixing screw holes 21, that is, the transmission shaft fixing screw holes are set to 2, one end is a fixing propeller, and the other end is a fixing transmission shaft right end. The position of the connecting part at the right end of the transmission shaft, which corresponds to the dismounting ejection screw hole 10 of the transmission shaft, is a plane.

When the transmission shaft is installed, the transmission shaft assembling screw 22 penetrates through the transmission shaft fixing through hole 11 and then is screwed into the transmission shaft fixing screw hole 23, so that the left end 8 and the right end 9 of the transmission shaft are assembled, and meanwhile, the transmission shaft limiting groove 12 and the transmission shaft limiting boss 13 are precisely matched, so that torque transmission of the left end and the right end of the transmission shaft is realized. When disassembly and maintenance are carried out, the transmission shaft assembling screws 22 are separated and disassembled from the transmission shaft fixing through holes 11 and the transmission shaft fixing screw holes 23, then only the transmission shaft disassembling ejection screws 19 are screwed into the transmission shaft disassembling ejection screw holes 10 (the transmission shaft disassembling ejection screw holes 10 are specifically arranged on the transmission shaft limiting grooves 12, the transmission shaft ejection screw holes 10 are two symmetrical holes, the transmission shaft ejection screw holes 10 are arranged on two sides of the grooves 12), and the transmission shaft disassembling ejection screws 19 are ejected on the plane of the transmission shaft right end connecting portion at the right end 9 of the transmission shaft, so that the disassembly and the separation of the transmission shafts are realized.

As shown in fig. 1 and fig. 2, the power module of the present invention includes a power module cabin 1 and a water-jet propeller module 2. The power module hatch 24 of the power module cabin 1 is fixed by power module hatch fixing screws 25. The left end 8 of the transmission shaft is assembled in the power module cabin body 1, and the left end 8 of the transmission shaft is provided with a coupling 5. The coupling 5 is connected with a driving motor 4 arranged in the power module cabin body 1, and the left end 8 of the transmission shaft is fixed with the driving motor 4 through the coupling 5 to realize torque transmission. As shown in fig. 3, the right end 9 of the transmission shaft is assembled in the water-jet propeller module 2, the propeller fixing screw 20 penetrates through the propeller 16 and is screwed into the propeller fixing screw hole 21, so that the propeller 16 and the right end 9 of the transmission shaft are fixed, and then the right end fixing screw 18 of the transmission shaft is fixed with the water-jet propeller module 2.

When the power module is assembled, the transmission shaft assembling screw 22 passes through the transmission shaft fixing through hole 11 and then is screwed into the transmission shaft fixing screw hole 23, so that the transmission shaft is installed. And then the water jet propeller fixing screws 27 on the connecting flange of the water jet propeller module 2 are detachably fixed with the water jet propeller fixing screw holes 28 correspondingly arranged on the power module cabin body 1, so that the combination of the power module cabin body 1 and the water jet propeller module 2 is realized.

When the disassembly and maintenance are needed, the water-jet propeller fixing screw 27 and the water-jet propeller fixing screw hole 28 are separated, the transmission shaft disassembly ejection screw 19 is screwed into the transmission shaft disassembly ejection screw hole 10, and the disassembly of the water-jet propeller module 2 is realized by jacking the screw on the plane of the transmission shaft right end connecting part at the right end 9 of the transmission shaft (the plane is the plane where the transmission shaft fixing screw hole 23 is positioned below the limiting boss 13), so that the guide vane 7 or the propeller 16 of the water-jet propeller is replaced without disassembling equipment such as a power module cabin cover.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A detachable transmission shaft of a propeller special for surfboards is characterized by comprising a left end (8) of the transmission shaft and a right end (9) of the transmission shaft; a sealing element baffle ring (26), a transmission shaft fixing through hole (11) and a transmission shaft limiting groove (12) are arranged at the left end (8) of the transmission shaft, wherein a transmission shaft dismounting ejection screw hole (10) is formed in the transmission shaft limiting groove (12); a propeller fixing screw hole (21), a transmission shaft fixing screw hole (23) and a transmission shaft limiting boss (13) are arranged on the right end (9) of the transmission shaft; the transmission shaft limiting groove (12) on the left end (8) of the transmission shaft and the transmission shaft limiting boss (13) on the right end (9) of the transmission shaft can be matched and positioned, so that torque transmission of the left end (8) of the transmission shaft and the right end (9) of the transmission shaft is realized;

2. The removable drive shaft according to claim 1, characterized in that the propeller fixing screw holes (21) are four or more, two of the propeller fixing screw holes (21) being through holes, the other propeller fixing screw holes (21) being blind holes, the drive shaft fixing screw holes (23) and the through-hole propeller fixing screw holes (21) being common fixing screw holes.

3. The detachable propeller shaft according to claim 1, wherein the cross-sectional shape of the propeller shaft stopper boss (13) is a triangle, a semicircle, a profile, a rectangle, a square, or a quadrangle other than a square and a rectangle.

4. A detachable drive shaft according to claim 1, wherein a propeller (16) is provided at the right end (9) of the drive shaft, and a propeller fixing screw (20) is screwed into the propeller fixing screw hole (21) through the propeller (16) to fix the propeller (16) and the right end (9) of the drive shaft.

5. A detachable drive shaft according to claim 2, wherein a propeller (16) is provided at the right end (9) of the drive shaft, and a propeller fixing screw (20) is screwed into the propeller fixing screw hole (21) through the propeller (16) to fix the propeller (16) to the right end (9) of the drive shaft.

6. A detachable drive shaft according to any one of claims 1 to 5, characterised in that a coupling (5) is provided on the left end (8) of the drive shaft; the coupler (5) is connected with the driving motor (4), and the left end (8) of the transmission shaft is fixed with the driving motor (4) through the coupler (5) to realize torque transmission.

7. The detachable transmission shaft according to any one of claims 1 to 5, further comprising a power module, the power module comprising a power module nacelle (1) and a water jet propulsion module (2); the left end (8) of the transmission shaft is assembled in the power module cabin body (1), the right end (9) of the transmission shaft is assembled in the water-jet propeller module (2), and the driving motor (4) is assembled in the power module cabin body (1).

8. The detachable propeller shaft of claim 6, further comprising a power module, the power module comprising a power module nacelle (1) and a water jet propeller module (2); the left end (8) of the transmission shaft is assembled in the power module cabin body (1), the right end (9) of the transmission shaft is assembled in the water-jet propeller module (2), and the driving motor (4) is assembled in the power module cabin body (1).

9. The detachable propeller shaft according to claim 7, wherein the water jet module (2) is detachably fixed to a corresponding water jet fixing screw hole (28) provided in the power module body (1) by means of a water jet fixing screw (27) provided in a connection flange thereof.

10. The detachable transmission shaft according to any one of claims 1 to 5, wherein the transmission shaft detaching ejection screw (19) is screwed into the transmission shaft detaching ejection screw hole (10), and the detachment and separation of the transmission shaft is achieved by the transmission shaft detaching ejection screw (19) abutting on the plane of the transmission shaft limit boss (13) at the right end (9) of the transmission shaft.

11. A propeller comprising a detachable propeller shaft according to any one of claims 1-10, characterized by comprising a power module, the power module comprising a power module body (1) and a water jet propeller module (2), the power module body (1) being detachably fixed to the water jet propeller module (2).