Propeller with retractable folding mechanism

Abstract

The propeller with the retractable folding mechanism comprises a propeller body and a fixing frame fixedly connected with the propeller body, the fixing frame is sleeved with a folding structure, and the folding structure comprises folding plates symmetrically arranged on the two sides of the fixing frame. A rotatable rotating shaft is transversely arranged at the front end of the bottom of the folding plate in a penetrating mode, the rear end of the bottom of the folding plate is fixedly connected through a connecting rod, the connecting rod is located on the outer side of the fixing frame, and a connecting groove capable of being connected with an external mechanism is formed in the middle end of the bottom of the folding plate. Limiting rods parallel to the rotating shaft are transversely arranged in the middles of the folding plates, limiting grooves allowing the limiting rods to move up and down are formed in the connecting positions of the folding plates and the limiting rods, tension springs are arranged between the limiting rods and the rotating shaft, and the tops of the folding plates are connected through pull rods. According to the folding mechanism, the propeller can be folded and unfolded through single-hand or double-hand operation without the help of an external tool.

Description

Technical Field

[0001] The utility model relates to the technical field of folding equipment, in particular to a propeller with a retractable folding mechanism. Background Art

[0002] A ship's propeller is an energy converter in a ship's propulsion system. It converts the power generated by the engine into thrust for the ship to overcome the resistance of the ship in the water and propel the ship forward.

[0003] Since ship propellers operate in water for a long time, they need to be maintained. Currently, external tools are usually needed to perform propeller maintenance, resulting in low propeller maintenance efficiency.

[0004] Therefore, it is necessary to provide a propeller with a retractable and foldable mechanism to improve the maintenance efficiency of the propeller. Utility Model Content

[0005] The main purpose of the utility model is to provide a propeller with a retractable folding mechanism to address the deficiencies of the current existing technology, so as to facilitate the folding and unfolding of the propeller and solve the problem that the propeller is difficult to fold and unfold.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The foldable platform is a platform that is symmetrically arranged on both sides of the fixed frame, and the bottom front end of the foldable platform is horizontally penetrated by a rotatable rotating shaft, and the bottom rear end of the foldable platform is fixedly connected by a connecting rod, and the connecting rod is located on the outside of the fixed frame. A connecting groove that can be connected to an external mechanism is provided at the middle end of the bottom of the foldable platform, and a limit rod parallel to the rotating shaft is horizontally provided in the middle of the foldable platform. A limit groove for the limit rod to move up and down is provided at the connection position between the foldable plate and the limit rod, and a tension spring is provided between the limit rod and the rotating shaft, and the top of the foldable plate is connected by a pull rod.

[0008] As a preferred solution of the propeller with a retractable and foldable mechanism described in the present invention, connecting ports are symmetrically provided on both sides of the lower end of the fixing frame, and the connecting ports are fitted with the corresponding connecting grooves.

[0009] As a preferred solution of the propeller with a retractable and foldable mechanism described in the present invention, card slots are symmetrically provided on both sides of the middle section of the fixing frame, and the card slots are fitted with the corresponding limiting slots.

[0010] As a preferred solution of the propeller with a retractable and foldable mechanism described in the utility model, the fixing frame is provided with an arc opening near the edge of the card slot.

[0011] As a preferred solution of the propeller with a retractable and foldable mechanism described in the utility model, the depth of the slot is greater than the diameter of the limiting rod.

[0012] As a preferred solution of the propeller with a retractable and foldable mechanism described in the present invention, arc-shaped slots that can abut against the pull rod are symmetrically provided on both sides of the upper end of the fixing frame, and the radius of the slot is the same as the radius of the pull rod.

[0013] As a preferred solution of the propeller with a retractable and foldable mechanism described in the utility model, the outer periphery of the rotating shaft is provided with a first outer groove for fixing one end of the tension spring, and the outer periphery of the limiting rod is provided with a second outer groove for fixing the other end of the tension spring.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] The folding structure can realize the retraction and extension of the propeller, which is conducive to the maintenance of the propeller; the folding mechanism can be operated with one hand or two hands without the aid of external tools, effectively improving work efficiency; pulling the limit rod upward to disengage it from the slot, pulling the limit rod or pull rod upward clockwise, the folding structure rotates counterclockwise around the rotation axis as the axis, and under the action of external force, the fixing frame rotates upward clockwise along the ship positioning rod connected to its top, so that the propeller is released upward; pulling the limit rod or pull rod downward counterclockwise, the fixing frame rotates counterclockwise along the ship positioning rod connected to its top, and the folding structure rotates clockwise around the rotation axis as the axis to return to its original position, so that the propeller is retracted downward; the fitting setting of the connecting port and the connecting groove can firmly connect the folding structure to the ship fixing rod; the matching setting of the slot and the limit slot can make the limit rod easily disengage from the slot and reset to the slot; the edge line of the slot is set to an arc with a certain curvature to protect the limit rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. Among them:

[0017] Figure 1 This is a schematic diagram of the propeller structure with a retractable and foldable mechanism of the utility model;

[0018] Figure 2 It is a side view of the propeller with a retractable and foldable mechanism of the present invention;

[0019] Figure 3 for Figure 1 Structural diagram of the mid-folding structure;

[0020] Figure 4 for Figure 1 Schematic diagram of the side structure of the middle fixing frame;

[0021] Figure 5 for Figure 1 Magnified view of point Ⅰ;

[0022] Figure 6 for Figure 1 Enlarged view of point II.

[0023] Reference numerals include:

[0024] 1. Propeller; 2. Fixing frame; 200. Connecting port; 201. Slot; 202. Arc port; 203. Notch; 3. Folding structure; 300. Folding plate; 301. Rotating axis; 302. Connecting rod; 303. Connecting slot; 304. Limiting rod; 305. Limiting slot; 306. Tension spring; 307. First outer slot; 308. Second outer slot. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are merely illustrative embodiments of the present invention, rather than the only embodiments.

[0026] like Figures 1 to 6As shown, a propeller with a retractable folding mechanism includes a ship propeller 1 and a fixing frame 2 fixedly connected to the propeller 1, the top of the fixing frame 2 is connected to the ship positioning rod, and during operation, the fixing frame 2 can rotate along the ship positioning rod, and the outer portion of the fixing frame 2 is sleeved with a folding structure 3, which will rotate up and down along the outer portion of the fixing frame 2, wherein the folding structure 3 includes folding plates 300 symmetrically arranged on both sides of the fixing frame 2, and a rotatable rotating shaft 301 is horizontally penetrated through the bottom front end of the folding plate 300, which can make the folding plate 300 rotate along the rotating shaft 301, and the bottom rear end of the folding plate 300 is fixedly connected by a connecting rod 302, wherein the connecting rod 302 is arranged on the outer side of the fixing frame 2, and a connecting groove 303 that can be connected to an external mechanism is provided at the bottom middle end of the folding plate 300. The function of the connecting groove 303 is to fix the folding plates 300 on both sides to the components of the ship, such as the ship fixing rod, that is, the folding mechanism is connected to the ship fixing rod through the connecting groove 303. Generally, the two are connected by a snap connection. A limit rod 304 arranged parallel to the rotating shaft 301 is laterally arranged in the middle of the folding plate 300. The limit rod 304 can fix the position of the folding structure 3. A limit groove 305 for the limit rod 304 to move up and down is provided at the connection position of the folding plate 300 and the limit rod 304. When the folding structure 3 is in operation, the limit rod 304 moves up and down along the limit groove 305. A tension spring 306 is provided between the limit rod 304 and the rotating shaft 301. The tension spring 306 can provide tension for pulling the limit rod 304. The top of the folding plate 300 is connected by a pull rod 309.

[0027] Furthermore, connecting ports 200 are symmetrically provided on both sides of the lower end of the fixing frame 2, and the connecting ports 200 are fitted with the corresponding connecting grooves 303. The functions of the connecting ports 200 and the connecting grooves 303 are similar, that is, the fixing frame 2 is connected to the ship fixing rod through the connecting ports 200. The connection method of the connecting port 200 and the ship fixing rod is also a snap connection. The fitting arrangement of the connecting port 200 and the connecting groove 303 can make the fixing frame 2 and the folding structure 3 simultaneously break away from the contact with the ship fixing rod, and then perform subsequent actions.

[0028] When the folding structure 3 is in the state of being lifted up, the folding frame 3 is in the state of being lifted up, and the folding frame 3 is in the state of being lifted up.

[0029] Furthermore, the fixing frame 2 is provided with an arc opening 202 near the edge of the card slot 201. Specifically, when the limiting rod 304 is disengaged from the card slot 201, in order to prevent the limiting rod 304 from colliding with the edge of the card slot 201, the edge of the card slot 201 is set to an arc opening 202 with a certain curvature. When the folding structure 3 needs to be reset to its original position, the limiting rod 304 can follow the arc opening 202 to enter the card slot 201, and the arc opening 202 can also provide a certain protection for the limiting rod 304.

[0030] Furthermore, arc-shaped slots 203 that can abut the pull rod 309 are symmetrically provided on both sides of the upper end of the fixing frame 2. The radius of the slot 203 is the same as the radius of the pull rod 309. The contact position between the pull rod 309 and the fixing frame 2 is set to an arc-shaped slot 203 with a certain radius, which can ensure that the pull rod 309 and the fixing frame 2 will not collide when in contact. Therefore, the radius setting of the slot 203 needs to be adapted to the radius of the pull rod 309.

[0031] Furthermore, the outer periphery of the rotating shaft 301 is provided with a first outer groove 307 for fixing one end of the tension spring 306, and the outer periphery of the limiting rod 304 is provided with a second outer groove 308 for fixing the other end of the tension spring 306. The first outer groove 307 can make the pull ring at one end of the tension spring 306 connected to the rotating shaft 301 firmly fixed on the rotating shaft 301. Similarly, the second outer groove 308 can make the pull ring at one end of the tension spring 306 connected to the limiting rod 304 firmly fixed on the limiting rod 304.

[0032] The working principle of this embodiment is as follows:

[0033] ① The loosening principle of the folding mechanism: pull the limit rod 304 upward until it reaches the upper end of the limit slot 305, pull the limit rod 304 counterclockwise, the limit rod 304 disengages from the slot 201, pull the pull rod 309 counterclockwise, the connecting slot 303 disengages from the ship's fixing rod, the folding structure 3 rotates clockwise around the rotating axis 301, pull the pull rod 309 upward clockwise, the connecting port 200 of the fixing frame 2 disengages from the ship's fixing rod, the fixing frame 2 rotates clockwise along the ship positioning rod connected to its top, and then drives the propeller 1 to rotate clockwise upward to perform maintenance on the propeller 1.

[0034] ② Recovery principle of the folding mechanism: Pull the pull rod 309 outward counterclockwise, the fixing frame 2 rotates counterclockwise downward along the ship positioning rod connected to its top, the connecting port 200 of the fixing frame 2 is engaged with the ship fixing rod, push the pull rod 309 upward clockwise, the folding structure 3 rotates counterclockwise around the rotating axis 301, the connecting groove 303 is engaged with the ship fixing rod, the limiting rod 304 moves back to the slot 201 along the direction of the arc mouth 202, and push the limiting rod 304 downward in the vertical direction to make it fall to the bottom of the limiting groove 305, thereby realizing the reset of the folding structure 3 and the reset of the propeller 1.

[0035] It should be noted that the release and retraction of the folding mechanism can be achieved with one hand or with both hands. For example, the working principle can be achieved by operating with both hands, that is, one hand operates the limit rod 304 and the other hand operates the pull rod 309. The working principle can also be used to change the position of the limit rod 304 by one hand, without having to operate the pull rod 309. That is, when the folding mechanism is released, the limit rod 304 is pulled upward until it reaches the upper end of the limit slot 305, and the limit rod 304 is pulled outward counterclockwise to disengage the limit rod 304 from the slot 201. The limit rod 304 is pulled outward counterclockwise to disengage the connecting slot 303 and the connecting port 200 from the ship fixing rod. The limit rod 304 is pulled upward clockwise to rotate the fixing frame 2 clockwise along the ship positioning rod connected to its top, thereby driving the propeller 1 to rotate clockwise upward. The propeller 1 is then maintained. The principle of folding mechanism retraction is similar: by pulling the limit rod 304 counterclockwise downward, the fixing frame 2 rotates counterclockwise downward along the ship's positioning rod connected to its top, and the connection port 200 of the fixing frame 2 engages with the ship's fixing rod. The limit rod 304 is pushed clockwise upward, and the folding structure 3 rotates clockwise around the rotation axis 301 as the axis, and the connection slot 303 engages with the ship's fixing rod. The limit rod 304 moves back into the slot 201 along the direction of the arc 202, and the limit rod 304 is pushed downward vertically to the bottom of the limit slot 305, thereby resetting the folding structure 3 and the propeller 1. Whether the above operation is completed with one hand or two hands, no external tools are required, thus greatly improving work efficiency.

[0036] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A propeller with a retractable and foldable mechanism, comprising a propeller (1) and a fixing frame (2) fixedly connected thereto, characterized in that: The exterior of the fixing frame (2) is sleeved with a folding structure (3), the folding structure (3) comprising folding plates (300) symmetrically arranged on both sides of the fixing frame (2), the bottom front end of the folding plate (300) being laterally penetrated by a rotatable rotating shaft (301), the bottom rear end of the folding plate (300) being fixedly connected via a connecting rod (302), the connecting rod (302) being located on the outside of the fixing frame (2), and the bottom middle end of the folding plate (300) being provided with a connecting rod that can be connected to an external machine. A connecting groove (303) is provided for connecting the folding plate (300) with the rotating shaft (301); a limiting rod (304) is provided in parallel with the rotating shaft (301) in the middle of the folding plate (300); a limiting groove (305) for the limiting rod (304) to move up and down is provided at the connection position between the folding plate (300) and the limiting rod (304); a tension spring (306) is provided between the limiting rod (304) and the rotating shaft (301); and the top of the folding plate (300) is connected via a pull rod (309).

2. The propeller with a retractable and foldable mechanism according to claim 1, characterized in that: Connecting ports (200) are symmetrically provided on both sides of the lower end of the fixing frame (2), and the connecting ports (200) are fitted with the corresponding connecting grooves (303).

3. The propeller with a retractable and foldable mechanism according to claim 1, characterized in that: Clamping slots (201) are symmetrically arranged on both sides of the middle section of the fixing frame (2), and the clamping slots (201) are arranged to fit in with the corresponding limiting slots (305).

4. The propeller with a retractable and foldable mechanism according to claim 3, characterized in that: The fixing frame (2) is provided with an arc opening (202) on the edge line close to the clamping slot (201).

5. The propeller with a retractable and foldable mechanism according to claim 4, characterized in that: The depth of the clamping groove (201) is greater than the diameter of the limiting rod (304).

6. The propeller with a retractable and foldable mechanism according to claim 1, characterized in that: Arc-shaped notches (203) capable of abutting against the pull rod (309) are symmetrically provided on both sides of the upper end of the fixing frame (2), and the radius of the notch (203) is the same as the radius of the pull rod (309).

7. The propeller with a retractable and foldable mechanism according to claim 1, characterized in that: The outer periphery of the rotating shaft (301) is provided with a first outer groove (307) for fixing one end of the tension spring (306), and the outer periphery of the limiting rod (304) is provided with a second outer groove (308) for fixing the other end of the tension spring (306).

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