Automatic shaft locking device for rotary shaft system

Abstract

The present invention provides an automatic shaft locking device for a rotating shaft system. The device includes: a base, a shaft locking latch, a safety pin, a first hydraulic unit, a second hydraulic unit, a position sensor, and a control device. The base is used to be fixedly arranged on the hull; the shaft locking latch is slidably arranged on the base, and one end of the shaft locking latch has a locking portion that matches the shaft flange in a wedge or V shape; the safety pin is slidably arranged on the base, and the safety pin is used to limit the shaft locking latch; the first hydraulic unit is used to drive the shaft locking latch; the second hydraulic unit is used to drive the safety pin; the position sensor is used to sense the position of the shaft locking latch and the safety pin position; and the control device controls the first hydraulic unit and the second hydraulic unit according to the position of the shaft locking latch sensed by the position sensor. The automatic shaft locking device for a rotating shaft system for a ship provided by the present invention realizes the automatic shaft locking function and the shaft locking position keeping function with a simple mechanical structure and hydraulic control logic.

Description

Technical Field

[0001] The invention relates to the field of ship equipment, and in particular to an automatic shaft locking device for a rotary shaft system. Background Art

[0002] During the process of ship navigation, anchoring or operation, in order to prevent the static shaft system from being rotated by water flow or other power devices, a shaft locking device must be installed on the shaft system to keep the shaft system in a static state, thereby protecting the safety of the ship's main power device, transmission device and related personnel.

[0003] Existing locking devices include disc locking devices and pin locking devices. The disc locking device uses a brake band to clamp the brake disc connected to the shaft system to stop the shaft. It has a complex structure, occupies a large space, is costly, and is prone to operating errors. The pin locking device uses a manual method to achieve the shaft locking function, and the shaft system needs to be turned to a precise position before locking the shaft. The operation process is cumbersome and affects the efficiency of shaft locking. In addition, when the shaft system is subjected to vibration and impact, the existing shaft locking device usually has no position retention function and cannot ensure reliable and stable shaft locking. Summary of the invention

[0004] In view of the above problems, an object of the present invention is to provide an automatic shaft locking device for a rotary shaft system, so as to solve at least one of the above problems.

[0005] In order to achieve the above-mentioned object, the present invention provides a rotary shaft automatic locking device. The device comprises:

[0006] A base, the base being used to be fixedly arranged on the hull;

[0007] A shaft locking pin, wherein the shaft locking pin is slidably disposed on the base, and one end of the shaft locking pin has a locking portion that matches the shaft flange in a wedge shape or a V shape;

[0008] A safety pin, the safety pin being slidably disposed on the base and being used to limit the position of the lock shaft latch;

[0009] A first hydraulic unit, the first hydraulic unit is used to drive the lock shaft latch;

[0010] a second hydraulic unit, the second hydraulic unit being used to drive the safety pin;

[0011] A position sensor, the position sensor is used to sense the position of the lock shaft bolt and the position of the safety pin; and

[0012] A control device is electrically connected to the position sensor, the first hydraulic unit and the second hydraulic unit to control the first hydraulic unit and the second hydraulic unit according to the position of the lock shaft latch sensed by the position sensor.

[0013] In one embodiment, the first hydraulic unit comprises:

[0014] A first hydraulic cylinder, the first hydraulic cylinder being connected to the locking shaft latch;

[0015] a first valve body, the first valve body being used to control the manner in which oil is injected into the first hydraulic cylinder and thereby control the movement direction of the first hydraulic cylinder; and

[0016] The first hydraulic lock is used to maintain the working state of the first hydraulic cylinder.

[0017] In one embodiment, the second hydraulic unit comprises:

[0018] a second hydraulic cylinder connected to the safety pin; and

[0019] The second valve body is used to control the way in which oil is injected into the second hydraulic cylinder and thus control the movement direction of the second hydraulic cylinder.

[0020] In one embodiment, it further includes:

[0021] A limit pin is used to limit the circumferential position of the lock shaft latch pin.

[0022] In one embodiment, a limiting groove is provided on the lock shaft latch along the length direction, and one end of the limiting pin is at least partially located in the limiting groove to limit the circumferential position of the lock shaft latch.

[0023] In one embodiment, a first piston is slidably disposed in the first hydraulic cylinder, the first piston is connected to the lock shaft pin, the first hydraulic cylinder has two symmetrically disposed oil filling holes, and the first valve body controls the movement direction of the first piston by controlling the oil filling to different oil filling holes.

[0024] In one embodiment, the first valve body comprises a reversing valve, and the reversing valve is electrically connected to the control device.

[0025] In one embodiment, the second valve body comprises a reversing valve, and the reversing valve is electrically connected to the control device.

[0026] In one embodiment, a second piston is slidably disposed in the second hydraulic cylinder, the second piston is connected to the safety pin, a spring is further disposed in the second hydraulic cylinder, and the second valve body controls the movement direction of the second piston by controlling whether oil is injected into the second hydraulic cylinder.

[0027] In one embodiment, there are multiple position sensors, and the multiple position sensors are arranged along the axial direction of the lock shaft pin and the safety pin.

[0028] The rotary shaft automatic locking device provided by the embodiment of the present invention realizes the automatic locking function and the locking position holding function with a simple mechanical structure and hydraulic control logic. It has a simple structure, a small size, and simple operation, can quickly complete the shaft locking function, and the working process is safe and reliable. Its specifications are easy to adjust, and it is easy to form a universal and serialized product. The rotary shaft automatic locking device can be applied to marine rotary shaft systems, and its specifications can also be adjusted accordingly according to needs and applied to other working occasions.

[0029] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0030] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0031] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 It is a structural schematic diagram of the automatic shaft locking device of the rotary shaft system of the present invention;

[0034] Figure 2 It is a partial structural schematic diagram of the shaft locking pin of the automatic shaft locking device of the rotary shaft system of the present invention;

[0035] Figure 3 The figure is a schematic diagram of the position of the position sensor on the safety pin of the automatic shaft locking device of the rotary shaft system of the present invention. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0037] Reference Figure 1 as well as Figure 2 As shown, an embodiment of the present invention provides an automatic shaft locking device 10 for a rotary shaft system, characterized in that it includes: a base 11, a shaft locking pin 12, a safety pin 13, a first hydraulic unit 14, a second hydraulic unit 15, and a position sensor 16. The automatic shaft locking device 10 for a rotary shaft system can be used for a rotary shaft system for a ship. Of course, the automatic shaft locking device 10 for a rotary shaft system can also be used in other equipment.

[0038] Specifically, the base 11 can be used to be fixedly arranged on the hull. The locking shaft latch 12 is slidably arranged on the base 11, and one end of the locking shaft latch 12 has a locking portion 121 that cooperates with the shaft flange 20. For example, the locking portion 121 can cooperate with the shaft flange 20 in a wedge shape or a V shape. The wedge-shaped or V-shaped structure can ensure that the locking portion 121 does not need to be completely aligned with a certain position of the shaft flange 20 in order to be partially inserted into the shaft flange 20, thereby effectively reducing the position accuracy requirements of the locking shaft latch 12 and improving the success rate of shaft locking.

[0039] The safety pin 13 is slidably arranged on the base 11, and the safety pin 13 is used to limit the lock shaft latch 12. The first hydraulic unit 14 is used to drive the lock shaft latch 12. The second hydraulic unit 15 is used to drive the safety pin 13. And the position sensor 16 is used to control the first hydraulic unit 14 and the second hydraulic unit 15 according to the position of the lock shaft latch 12. For example, there are at least two position sensors 16 (16a, 16b), and multiple position sensors 16 (16a, 16b) are arranged along the axial direction of the lock shaft latch 12. At the same time, a position sensor 18 is also provided, and the position sensor 18 is used to control the safety pin 13.

[0040] The rotary shaft automatic locking device 10 may further include a control device (not shown), which is electrically connected to the position sensor 16 (16a, 16b), the first hydraulic unit 14 and the second hydraulic unit 15, so as to control the first hydraulic unit 14 and the second hydraulic unit 15 according to the position of the locking shaft latch 12 sensed by the position sensor 16 (16a, 16b). The control device may be provided separately or integrated in the position sensor 16 (16a, 16b) or the valve body.

[0041] In one embodiment, the first hydraulic unit 14 may include: a first hydraulic cylinder 141, a first valve body 142 and a first hydraulic lock 143. The first hydraulic cylinder 141 may be connected to the lock shaft latch 12. The first valve body 142 is used to control the way in which oil is injected into the first hydraulic cylinder 141 and thus control the movement direction of the first hydraulic cylinder 141. And, the first hydraulic lock 143 is used to maintain the working state of the first hydraulic cylinder 141.

[0042] Furthermore, a first piston (not shown) is slidably disposed in the first hydraulic cylinder 141, the first piston is connected to the lock shaft latch 12, the first hydraulic cylinder 141 has two symmetrically disposed oil injection holes A and B, and the first valve body 142 controls the movement direction of the first piston by controlling the oil injection to different oil injection holes A and B. The first valve body 142 includes a reversing valve, and the reversing valve is connected to the position sensor 16 (16a, 16b) for signal.

[0043] In one embodiment, the second hydraulic unit 15 includes a second hydraulic cylinder 151 and a second valve body 152. The second hydraulic cylinder 151 is connected to the safety pin 13. And the second valve body 152 is used to control the way of injecting oil into the first hydraulic cylinder 141 according to the signal sent by the position sensor 18, thereby controlling the movement direction of the second hydraulic cylinder 151.

[0044] Furthermore, a second piston is slidably disposed in the second hydraulic cylinder 151, the second piston is connected to the safety pin 13, a spring is also disposed in the second hydraulic cylinder 151, and the second valve body 152 controls the movement direction of the second piston by controlling whether to inject oil into the second hydraulic cylinder 151. The second valve body 152 includes a reversing valve, and the reversing valve is connected to the position sensor 16 (16a, 16b) by signal.

[0045] In one embodiment, referring to Figure 2 As shown, in order to prevent the rotation of the locking shaft latch 12, the rotary shaft system automatic locking shaft device 10 may further include a limit pin 17. The limit pin 17 is used to limit the circumferential limit of the locking shaft latch 12. A limit groove 122 is provided on the locking shaft latch 12 along the length direction, and one end of the limit pin 17 is at least partially located in the limit groove 122, thereby limiting the circumferential limit of the locking shaft latch 12.

[0046] In order to enable those skilled in the art to implement the technical solution of the present application under the guidance of the specification of the present application, the following will be combined with Figure 1-3 The specific structure of each component in the rotary shaft system automatic locking device 10 of the present application and the matching relationship between the components are described in detail.

[0047] For example, when the rotary shaft automatic locking device 10 is not working, the locking shaft pin 12 can be completely hidden in the hole of the locking shaft base 11, and the position sensors 16 (16a, 16b), 18 (see Figure 3) respectively send out a closing signal; at this time, the second hydraulic cylinder 151 is not filled with oil, and the second hydraulic cylinder 151 pushes the safety pin 13 out of the guide hole of the base 11 under the action of the internal spring to limit the position of the lock shaft bolt 12. Then, the position sensor 18 sends out an opening and closing signal.

[0048] After receiving the shaft locking work instruction, the reversing valve is first actuated, the position sensor 18 sends a closing signal, the second hydraulic cylinder 151 is filled with oil, and the safety pin 13 is retracted into the guide hole of the base 11 under the action of the second hydraulic cylinder 151; secondly, the reversing valve is actuated, the B-side cylinder of the first hydraulic cylinder 141 is filled with oil, and the shaft locking pin 12 slides forward in the hole of the base 11 under the push of the first hydraulic cylinder 141, and is inserted into the wedge-shaped groove on the shaft flange 20. When the shaft is locked in place, the position sensor 16 (16a, 16b) sends an opening and closing signal respectively, and the first hydraulic cylinder 141 keeps the piston position stationary under the action of the first hydraulic lock 143; then the reversing valve is actuated, the second hydraulic cylinder 151 returns oil, the position sensor 18 sends an opening and closing signal, and the safety pin 13 extends out of the guide hole of the base 11, thereby limiting the position of the shaft locking pin 12, and the shaft locking is completed.

[0049] After receiving the unlocking work instruction, the reversing valve is first actuated, the position sensor 18 sends a closing signal, the second hydraulic cylinder 151 is filled with oil, and the safety pin 13 is retracted into the guide hole of the base 11 under the action of the second hydraulic cylinder 151; secondly, the reversing valve is actuated, the A-side cylinder of the first hydraulic cylinder 141 is filled with oil, and the lock shaft latch 12 slides backward in the hole of the base 11 under the push of the first hydraulic cylinder 141 and disengages from the shaft flange 20. When the unlocking is in place, the position sensors 16 (16a, 16b) respectively send closing signals, and the first hydraulic cylinder 141 keeps the piston position stationary under the action of the first hydraulic lock 143; then the reversing valve is actuated, the second hydraulic cylinder 151 returns oil, and the safety pin 13 extends out of the guide hole of the base 11, realizing the position limit of the lock shaft latch 12, and the position sensor 18 sends an opening and closing signal to complete the unlocking action.

[0050] The rotary shaft automatic locking device 10 provided by the embodiment of the present invention realizes the automatic locking function and the locking position holding function with a simple mechanical structure and hydraulic control logic. It has a simple structure, a small size, and simple operation, can quickly complete the shaft locking function, and the working process is safe and reliable. Its specifications are easy to adjust, and it is easy to form a universal and serialized product. The rotary shaft automatic locking device 10 can be applied to marine rotary shaft systems, and its specifications can also be adjusted accordingly according to needs and applied to other working occasions.

[0051] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by such claims. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. A rotary shaft automatic locking device, characterized in that: include: A base, the base being used to be fixedly arranged on the hull; A shaft locking pin, wherein the shaft locking pin is slidably disposed on the base, and one end of the shaft locking pin has a locking portion that matches the shaft flange in a wedge shape or a V shape; A safety pin, the safety pin being slidably disposed on the base and being used to limit the position of the lock shaft latch; A first hydraulic unit, the first hydraulic unit is used to drive the lock shaft latch, and the first hydraulic unit includes: A first hydraulic cylinder, the first hydraulic cylinder being connected to the locking shaft latch; a first valve body, the first valve body being used to control the manner in which oil is injected into the first hydraulic cylinder and thereby control the movement direction of the first hydraulic cylinder; and a first hydraulic lock, the first hydraulic lock being used to maintain a working state of the first hydraulic cylinder; A second hydraulic unit, the second hydraulic unit is used to drive the safety pin, and the second hydraulic unit includes: a second hydraulic cylinder connected to the safety pin; and a second valve body, the second valve body being used to control the way in which oil is injected into the second hydraulic cylinder and thereby control the movement direction of the second hydraulic cylinder; A position sensor, the position sensor is used to sense the position of the lock shaft bolt and the position of the safety pin; and A control device is electrically connected to the position sensor, the first hydraulic unit and the second hydraulic unit to control the first hydraulic unit and the second hydraulic unit according to the position of the lock shaft latch sensed by the position sensor.

2. The automatic shaft locking device for a rotary shaft system according to claim 1, characterized in that: Also includes: A limit pin is used to limit the circumferential position of the lock shaft latch pin.

3. The automatic shaft locking device for a rotary shaft system according to claim 2, characterized in that: A limiting groove is arranged on the lock shaft latch along the length direction, and one end of the limiting pin is at least partially located in the limiting groove so as to limit the circumferential position of the lock shaft latch.

4. The automatic shaft locking device for a rotary shaft system according to claim 1, characterized in that: A first piston is slidably disposed in the first hydraulic cylinder, the first piston is connected to the lock shaft latch, the first hydraulic cylinder has two symmetrically disposed oil filling holes, and the first valve body controls the movement direction of the first piston by controlling the oil filling to different oil filling holes.

5. The automatic locking device for a rotary shaft system according to claim 1, characterized in that: The first valve body includes a reversing valve, and the reversing valve is electrically connected to the control device.

6. The automatic shaft locking device for a rotary shaft system according to claim 1, characterized in that: The second valve body includes a reversing valve, and the reversing valve is electrically connected to the control device.

7. The automatic shaft locking device for a rotary shaft system according to claim 1, characterized in that: A second piston is slidably disposed in the second hydraulic cylinder, the second piston is connected to the safety pin, a spring is also disposed in the second hydraulic cylinder, and the second valve body controls the movement direction of the second piston by controlling whether oil is injected into the second hydraulic cylinder.

8. The automatic shaft locking device for a rotary shaft system according to claim 1, characterized in that: There are multiple position sensors, and the multiple position sensors are arranged along the axial direction of the lock shaft pin and the safety pin.

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