Quick tightening device for mooring lock

Abstract

The quick tightening device comprises a main shaft, sleeves are arranged at the two ends of the main shaft respectively, external threads are formed in the two ends of the main shaft respectively, internal threads matched with the external threads are formed in the inner side walls of the two sleeves respectively, and the two sleeves are in threaded connection. The ends, away from the main shaft, of the two sleeves are connected with external mooring locks respectively, a driving device used for driving the main shaft to rotate is arranged in the middle of the main shaft, the driving device is in transmission connection with the main shaft, and a reverse lead screw is driven to rotate through worm gear and worm speed reduction transmission. And the two sleeves are driven to be close to or away from each other simultaneously, so that the mooring rigging is tightened or loosened. The quick tightening device for the mooring lock has the advantages of being simple, low in cost, convenient and fast to operate, high in tightening speed, capable of saving labor, good in self-locking performance, free of leakage and explosion risks, high in strength and high in working reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of ship devices, in particular to a fast tightening device for a mooring lock. Background Art

[0002] Currently, existing products mainly use pure mechanical spiral or manual hydraulic oil pump to achieve the effect of tightening or releasing the mooring lock, but the existing solutions have slow tightening speed and difficult operation, and need to be improved. Utility Model Content

[0003] In view of the above problems, a quick tightening device for a mooring lock is now provided, aiming to solve the problems existing in the prior art.

[0004] The specific technical solutions are as follows:

[0005] A quick tightening device for a moored lock comprises a main shaft, sleeves are respectively arranged at both ends of the main shaft, external threads are formed at both ends of the main shaft, internal threads matching the external threads are formed on the inner side walls of the two sleeves, the two are threadedly connected, one end of the two sleeves away from the main shaft is respectively connected to an external moored lock, a driving device for driving the main shaft to rotate is arranged in the middle of the main shaft, and the driving device is transmission-connected to the main shaft.

[0006] The above-mentioned quick tightening device for the mooring lock also has the characteristic that the threads at both ends of the main shaft are in opposite directions.

[0007] The beneficial effect of the above solution is that when the main shaft is driven to rotate by an external force, the sleeves at both ends of the main shaft simultaneously move closer to or farther away from the driving device in the middle, thereby achieving the effect of tightening or releasing the mooring lock.

[0008] The above-mentioned quick tightening device for the mooring lock also has the following characteristics: the driving device includes a hollow shell and a worm, a worm wheel matched with the worm is arranged in the middle of the main shaft, the main shaft passes through the shell, and the worm wheel is just inside the shell, the main shaft is connected to the shell through a bearing, the worm is also arranged in the shell, and the worm and the worm wheel are meshed with each other, and the two ends of the worm respectively pass through the two inner side walls of the shell and extend to the outside of the shell.

[0009] The beneficial effects of the above scheme are as follows: the worm is meshed with the worm wheel in the middle of the main shaft, and the main shaft can be driven to rotate by driving the worm by external force, so as to drive the two sleeves to move closer to or away from each other, thereby achieving the effect of adjusting the tightness of the mooring lock.

[0010] The above-mentioned fast tightening device for the mooring lock also has the characteristic that both ends of the worm are provided with notches for engaging with the external power device.

[0011] The beneficial effect of the above solution is that an engagement notch is provided on the end face of the worm to facilitate engagement and connection between an external power device and the worm to drive the worm.

[0012] In summary, the beneficial effects of this scheme are:

[0013] In the mooring lock fast tightening device provided by the utility model, the reverse screw is driven to rotate by the worm gear and worm reduction transmission to drive the two sleeves to approach or move away from each other at the same time, so as to tighten or loosen the mooring rigging. The mooring lock fast tightening device provided by the utility model has the advantages of simplicity, low cost, convenient operation, fast tightening speed and labor saving, good self-locking performance, no leakage and explosion risk, high strength and high working reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front section structure of the fast tightening device of the mooring lock of the utility model.

[0015] In the figure: 1. main shaft; 2. sleeve; 3. housing; 4. worm; 5. worm wheel. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solution of the utility model in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] The present invention will be further described below in conjunction with specific embodiments, but this is not intended to limit the present invention.

[0019] Figure 1 FIG. 2 is a schematic diagram of the front cross-section structure of the fast tightening device for the mooring lock of the utility model. Figure 1 As shown, the mooring lock quick tightening device provided in this embodiment includes: a main shaft 1, sleeves 2 are respectively provided at both ends of the main shaft 1, external threads are provided at both ends of the main shaft 1, and internal threads matching the external threads are provided on the inner walls of the two sleeves 2, and the two are threadedly connected, and the ends of the two sleeves 2 away from the main shaft 1 are respectively connected to the external mooring lock, and a driving device for driving the main shaft 1 to rotate is provided in the middle of the main shaft 1, and the driving device is transmission-connected to the main shaft 1.

[0020] In the above embodiment, the thread directions at the two ends of the main shaft 1 are opposite.

[0021] In the above embodiment, the driving device includes a hollow shell 3 and a worm 4, a worm wheel 5 matched with the worm 4 is arranged in the middle of the main shaft 1, the main shaft 1 passes through the shell 3, and the worm wheel 5 is just inside the shell 3, the main shaft 1 is connected to the shell 3 through a bearing, the worm 4 is also arranged in the shell 3, and the worm 4 and the worm wheel 5 are meshed with each other, and the two ends of the worm 4 respectively pass through the two inner walls of the shell 3 and extend to the outside of the shell 3.

[0022] In the above embodiment, both ends of the worm 4 are provided with notches for engaging with an external power device.

[0023] It should be noted that, based on the actual situation, the calculation formula of the worm wheel 5 and the worm 4 is:

[0024] 1. Transmission ratio = number of teeth on worm wheel 5 ÷ number of worm 4

[0025] number

[0026] 2. Center distance = (worm wheel 5 pitch diameter + worm 4 pitch diameter) ÷ 2

[0027] 3. Worm gear 5 diameter = (number of teeth + 2) × module

[0028] 4. Worm gear 5 pitch diameter = module × number of teeth

[0029] 5. Worm 4 pitch diameter = Worm 4 outer diameter - 2 × module

[0030] 6. Worm 4 lead = π × module × number of heads

[0031] 7. Helix angle (lead angle) tgB = (module × number of heads) ÷ worm 4 pitch diameter

[0032] According to the above calculation formula, the module m, pressure angle, diameter coefficient q of worm 4, lead angle, number of worm 4 heads, number of teeth of worm 5, tooth top height coefficient (take 1) and top clearance coefficient (take 0.2) of worm wheel 5 and worm 4. Among them, module m and pressure angle refer to the module and pressure angle of the axial surface of worm 4, that is, the module and pressure angle of the end surface of worm wheel 5, and they are all standard values; the diameter coefficient q of worm 4 is the ratio of the pitch circle diameter of worm 4 to its module m.

[0033] Conditions for correct meshing of worm wheel 5 and worm 4:

[0034] The module and pressure angle of the worm 4 and the worm wheel 5 in the middle plane are equal, that is, the end face module of the worm wheel 5 is equal to the axial face module of the worm 4 and is a standard value; the end face pressure angle of the worm wheel 5 should be equal to the axial face pressure angle of the worm 4 and is a standard value.

[0035] After comprehensive consideration, the final selection of worm 4 is 12, the effective overload coefficient J=0.69, the secondary shaft diameter is 8mm, the number of sections of worm 4 is 6 / root, and it is right-handed; the pressure angle of worm wheel 5 is 20, the module is 1, the number of teeth is 26, and the tooth width is 30mm.

[0036] Working principle: the external power device is engaged with the notch at one end of the worm 4 to connect the two, and the external power device is started to drive the worm 4 to rotate. The worm 4 is engaged with the worm wheel 5, driving the worm wheel 5 and the main shaft 1 to rotate. Since the threads at both ends of the main shaft 1 are in opposite directions, the two sleeves 2 will move away from or approach each other at the same time, thereby achieving the effect of releasing or tightening the mooring lock.

[0037] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the present invention specification should be included in the protection scope of the present invention.

Claims

1. A fast tightening device for a mooring lock, characterized in that: The invention comprises a main shaft (1), wherein sleeves (2) are respectively arranged at both ends of the main shaft (1), both ends of the main shaft (1) are provided with external threads, and the inner walls of the two sleeves (2) are provided with internal threads matching the external threads, and the two are threadedly connected, and the ends of the two sleeves (2) away from the main shaft (1) are respectively connected to external mooring locks, and a driving device for driving the main shaft (1) to rotate is arranged in the middle of the main shaft (1), and the driving device is transmission-connected to the main shaft (1).

2. A fast tightening device for a mooring lock according to claim 1, characterized in that: The threads at both ends of the main shaft (1) are in opposite directions.

3. A fast tightening device for a mooring lock according to claim 2, characterized in that: The driving device comprises a hollow shell (3) and a worm (4); a worm wheel (5) matched with the worm (4) is arranged in the middle of the main shaft (1); the main shaft (1) passes through the shell (3), and the worm wheel (5) is just located inside the shell (3); the main shaft (1) is connected to the shell (3) through a bearing; the worm (4) is also arranged in the shell (3), and the worm (4) and the worm wheel (5) are meshed with each other; and the two ends of the worm (4) respectively pass through the two inner side walls of the shell (3) and extend to the outside of the shell (3).

4. A fast tightening device for a mooring lock according to claim 3, characterized in that: Both ends of the worm (4) are provided with notches for engaging with an external power device.

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