A drive mechanism land test protection device and installation method

Abstract

The application provides a driving mechanism land test protection device and a mounting method. The device comprises a support device, a sliding protection device and a control device. The support device comprises support columns and support column fixing members. The support column fixing members are respectively arranged at the lower end of an upper platform and the upper end of a lower platform of a land test bench. The support columns are arranged between the two support column fixing members. The sliding protection device comprises a sliding rail, which is arranged vertically on the support columns. A sliding bracket device is arranged on the sliding rail. A self-locking stepping motor is arranged at the lower end of the sliding rail. The control device comprises a main controller and an uninterrupted power supply. The uninterrupted power supply is connected to the main controller through a special cable. The main controller is connected to the self-locking stepping motor through a control cable. The device effectively avoids the potential risk of the verticality of the driving mechanism screw rod, increases the safety and reliability of the driving mechanism land test, and is suitable for being applied as a driving mechanism land test protection device and a mounting method.

Description

Technical Field

[0001] This invention relates to test protection devices in the field of ship drive mechanisms, and in particular to a land-based test protection device and installation method for drive mechanisms. Background Technology

[0002] The drive mechanism is a key device for the safe operation and control of a ship's power system. Before its formal installation on the hull, it must be pre-installed and tested on land to verify the working status of the relevant electrical equipment and mechanical performance. This is to check whether the assembly status and relevant performance parameters of the drive mechanism meet the requirements for formal installation. A dedicated debugging power supply will be used in the testing.

[0003] Currently, the power supplies used for testing drive mechanisms are designed and manufactured with the risk of power outages in the field environment in mind, and corresponding preventive measures are taken. However, due to limitations in design concepts and related test verification, the risk of the lead screw inside the drive mechanism falling from a high position due to damage or aging of key main control components in the power supply, human error, etc., is not considered. The lead screw falling from a height will cause deformation, wear, and other subtle damage, which will affect the verticality of the lead screw part of the drive mechanism and directly affect the test results. Test personnel cannot easily detect this.

[0004] Since the lead screw is a critical component in the drive mechanism assembly, its perpendicularity has particularly strict requirements. It is necessary to avoid the lead screw falling due to human error, electrical failure, or mechanical failure, which would change the perpendicularity of the lead screw and thus affect the test parameters of the drive mechanism. The above problems urgently need to be solved. Summary of the Invention

[0005] This invention proposes a land-based test protection device for a drive mechanism, which solves the problem of verticality change caused by the fall of the lead screw of the drive mechanism due to damage or aging of key main control components in the existing drive mechanism debugging power supply or human operation error.

[0006] The solution adopted by this invention to solve the technical problem is:

[0007] A protective device for land-based testing of a drive mechanism includes a land-based test bench, a support device, a sliding protection device, and a control device;

[0008] The support device includes a support column and support column fixing components. The support column fixing components are respectively disposed at the lower end of the upper platform and the upper end of the lower platform of the land test rig. The support column is installed between the two support column fixing components and serves as the main support for the sliding protection device.

[0009] The sliding protection device includes a sliding rail, which is closely attached to the support column and vertically erected thereon; a sliding bracket device is also installed on the sliding rail, which can make vertical reciprocating motion along the sliding rail; and a self-locking stepper motor is installed at the lower end of the sliding rail, which provides power for the movement of the sliding bracket device.

[0010] The control device includes a main controller and an uninterruptible power supply (UPS), wherein the UPS and the main controller are connected by a dedicated cable, and the UPS provides a stable and uninterrupted power supply to the protection device; the main controller is connected to the self-locking stepper motor via a control cable.

[0011] Furthermore, the sliding bracket device includes a slide table and a bracket. The sliding bracket device is slidably mounted on the sliding rail via the slide table. The slide table is mounted on the sliding rail and driven by the self-locking stepper motor, which allows it to perform vertical reciprocating motion along the sliding rail. The bracket includes a first end plate and a second end plate. The first end plate is fixedly mounted on the slide table, and the second end plate is vertically positioned at the lower end of the first end plate, making the bracket as a whole L-shaped device.

[0012] Furthermore, it also includes an inductive metal detector; the inductive metal detector is installed inside the first end plate of the bracket and is connected to the self-locking stepper motor via a protective signal cable.

[0013] Positive effects:

[0014] This invention establishes a support device on a land-based test bench, and installs a sliding protection device and a control device on the support device. The main controller controls a self-locking stepper motor to drive a sliding bracket device along a sliding track, following the lead screw and simulated load below the drive mechanism. This device effectively avoids the potential risk of the drive mechanism lead screw falling due to damage or aging of the main components of the debugging power supply, human error, etc., and prevents changes in the verticality of the lead screw from affecting the test results of the drive mechanism. It increases the safety and reliability of land-based debugging tests of the drive mechanism and is suitable as a protective device and installation method for land-based tests of drive mechanisms. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating an embodiment of the installation and use of the present invention;

[0016] Figure 2 This is a schematic diagram of the sliding bracket device according to an embodiment of the present invention;

[0017] Figure 3 This is a block diagram illustrating the signal transmission principle of an embodiment of the present invention;

[0018] Figure 4 This is a flowchart of the program execution of the internal logic processing unit of the main controller in an embodiment of the present invention.

[0019] In the diagram, 1. Support column, 2. Support column fixing component, 3. Sliding rail, 4. Sliding bracket device, 4.1. Slide table, 4.2. Bracket, 4.2.1. First end plate, 4.2.2. Second end plate, 5. Self-locking stepper motor, 6. Main controller, 7. Uninterruptible power supply, 8. Dedicated cable, 9. Control cable, 10. Inductive metal detector, 11. Fastening bolt, 12. Signal cable, 13. Drive mechanism debugging power supply, 14. Power cable, 15. Drive mechanism, 16. Lead screw, 17. Simulated load component, 18. Protection signal cable. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] This application adds a protective device that can move synchronously with the drive mechanism lead screw under the simulated load. This device serves as a safety protection measure for the lead screw, increasing the safety and reliability of the drive mechanism during land-based commissioning tests. It can solve the problem of the drive mechanism lead screw falling and affecting the verticality during land-based commissioning tests of existing marine drive mechanisms.

[0022] As shown in the figure, this embodiment discloses a land-based test protection device for a drive mechanism, including a land-based test bench, a support device, a sliding protection device, and a control device;

[0023] The support device includes a support column 1 and a support column fixing component 2. The support column fixing component 2 is respectively disposed at the lower end of the upper platform and the upper end of the lower platform of the land test rig. The support column 1 is installed between the two support column fixing components 2 and serves as the main support of the sliding protection device.

[0024] The sliding protection device includes a sliding track 3, which is vertically mounted on the support column 1; a sliding bracket device 4 is also installed on the sliding track 3, which can reciprocate vertically along the sliding track 3.

[0025] And, a self-locking stepper motor 5 installed at the lower end of the sliding rail 3, the self-locking stepper motor 5 providing power for the movement of the sliding bracket device 4;

[0026] The control device includes a main controller 6 and an uninterruptible power supply 7, wherein the uninterruptible power supply 7 is connected to the main controller 6 via a dedicated cable 8, and the uninterruptible power supply 7 provides a stable and uninterrupted power supply to the protection device; the main controller 6 is connected to the self-locking stepper motor 5 via a control cable 9.

[0027] In some embodiments, the sliding bracket device 4 includes a slide table 4.1 and a bracket 4.2, and the sliding bracket device 4 is slidably mounted on the sliding rail 3 via the slide table 4.1;

[0028] The slide table 4.1 is mounted on the sliding rail 3 and driven by the self-locking stepper motor 5, which allows it to reciprocate vertically along the sliding rail 3. The bracket 4.2 includes a first end plate 4.2.1 and a second end plate 4.2.2. The first end plate 4.2.1 is fixedly mounted on the slide table 4.1, and the second end plate 4.2.2 is vertically mounted at the lower end of the first end plate 4.2.1, making the bracket 4.2 generally L-shaped.

[0029] In some embodiments, an inductive metal detector 10 is also included. The inductive metal detector 10 is installed inside the first end plate 4.2.1 of the bracket 4.2 and is connected to the self-locking stepper motor 5 through a protection signal cable 18. It is used to detect the simulated load 17 made of metal material and then send a chain signal to control the operation of the self-locking stepper motor 5. The self-locking stepper motor 5 is controlled by disconnecting and connecting the circuit connection of the protection signal cable 18.

[0030] The inductive metal detector 10 is used to detect the distance of the simulated load 17 above the second end plate 4.2.2 of the bracket 4. To further improve the safety of the protection device, the inductive metal detector 10 is set at a distance of 40mm above the second end plate 4.2.2. When the simulated load 17 is detected, the inductive metal detector 10 sends an interlock signal to cut off the lifting control circuit of the self-locking stepper motor 5, so as to prevent the sliding bracket device 4 from getting too close to the simulated load 17 and thus affecting the test data of the drive mechanism 15.

[0031] In some embodiments, the position of the support column fixing member 2 can be adjusted according to the position of the drive mechanism 15 installed on the land test bench, and the installation position of the support column 1 will also move accordingly, so as to reasonably arrange the use space of the land test bench and to test and protect different types of drive mechanisms.

[0032] In some embodiments, the sliding rail 3 is detachably mounted on the support column 1 by fastening bolts 11, and the installation height can be adjusted to give it the characteristics of flexible detachable assembly.

[0033] In some embodiments, the first end plate 4.2.1 is detachably mounted on the slide table 4.1 by fastening bolts 11, and the height and position of the bracket 4.2 can be adjusted by adjusting the height and position of the first end plate 4.2.1 relative to the slide table 4.1.

[0034] In some embodiments, the control device further includes a signal cable 12, through which the main controller 6 is connected to the drive mechanism debugging power supply 13. The signal cable 12 can transmit the motion signal sent by the drive mechanism debugging power supply 13 to the drive mechanism 15 to the main controller 6. The main controller 6 then sends a signal to control the self-locking stepper motor 5 to drive the sliding bracket device 4 to follow the lead screw 16 to make corresponding movements.

[0035] Another embodiment, a method for installing a protective device for a drive mechanism during land-based testing, includes the following steps:

[0036] S1: A drive mechanism 15 is located above the land test bench. A lead screw 16 is connected and installed at the lower end of the drive mechanism 15. The lead screw 16 extends vertically downward into the test bench. A metal simulated load-bearing component 17 is installed at the lower end of the lead screw 16.

[0037] S2: The drive mechanism 15 is also connected to a drive mechanism debugging power supply 13 via a power cable 14; the drive mechanism debugging power supply 13 provides electrical energy for the operation of the drive mechanism 15, and transmits the electrical energy to the drive mechanism 15 via the power cable 14.

[0038] S3: Install support device;

[0039] Based on the position of the drive mechanism 15 and the downwardly vertically installed lead screw 16 mounted on the test bench, the installation position of the support column fixing member 2 is determined. The support column fixing member 2 is respectively installed at the lower end of the upper platform and the upper end of the lower platform of the land test bench. The support column 1 is installed between the two support column fixing members.

[0040] S4: Install a sliding protection device;

[0041] The sliding rail 3 is vertically installed on the support column 1 and close to the lead screw 16. After adjusting the height of the sliding rail 3, it is fixed with fastening bolts 11. A self-locking stepper motor 5 is installed below the sliding rail 3. A sliding bracket device 4 is installed on the sliding rail 3. The sliding bracket device 4 can slide vertically on the sliding rail 3 to support the simulated load 17.

[0042] S5: Connecting control device;

[0043] Install the main controller 6, which is connected to the original drive mechanism debugging power supply 13 on the land test bench via signal cable 12;

[0044] The main controller 6 is also connected to an uninterruptible power supply 7 via a dedicated cable 8, which provides a stable and uninterrupted power supply to the protection device.

[0045] The main controller 6 is connected to the self-locking stepper motor 5 via a control cable 9;

[0046] Check the circuit and complete the installation.

[0047] The signal cable 12 transmits the signal sent from the drive mechanism debugging power supply 13 to the drive mechanism 15 to the main controller 6. Then, the main controller 6 sends the six control signals from the drive mechanism debugging power supply 13, namely the lifting bar signal, lowering bar signal, high speed signal, low speed signal, upper limit signal, and lower limit signal, to the internal processing unit after optocoupler isolation. After the internal processing unit of the main controller 6 analyzes and processes these six signals according to the correct logical relationship, it sends the direction signal and frequency signal to the self-locking stepper motor 5 through the control cable 9, controls the self-locking stepper motor 5 to rotate in the forward and reverse directions, thereby controlling the sliding bracket device 4 and the lead screw 16 of the drive mechanism 15 to move synchronously and follow each other to perform lifting and lowering actions.

[0048] In another embodiment, S5: connecting the control device further includes an inductive metal detector 10 mounted on the sliding bracket device 4, the inductive metal detector 10 being electrically connected to the main controller 6.

[0049] The sliding bracket device 4 of the protection device is connected to the bottom of the land test simulated load 17 connected to the lead screw 16. The bottom of the load 17 is always kept at a safe drop distance of 50mm. This distance is generated by the self-locking stepper motor 5 after the main controller 6 collects the lower limit signal of the drive mechanism debugging power supply 13. At the same time, in order to prevent the sliding bracket device 4 and the bottom of the simulated load 17 from being too close and causing a collision, the device uses an inductive metal detector 10 for further distance protection control. When the distance between the sliding bracket device 4 and the bottom of the simulated load 17 is less than 40mm, the inductive metal detector 10 sends a chain signal to cut off the lifting control circuit of the self-locking stepper motor 5. The self-locking stepper motor 5 stops running, and the sliding bracket device 4 also stops, ensuring a safe distance.

[0050] When the distance between the bottom of the sliding bracket device 4 and the simulated load 17 is greater than 40mm, the inductive metal detector 10 sends a chain signal, restoring the lifting control signal of the self-locking stepper motor 5. The sliding bracket device 4 continues to rise, restoring the linkage protection function of the safety distance of 50mm to the drive mechanism screw 16.

[0051] like Figure 4 As shown, the program operation flow of the internal logic processing unit of the main controller 6 is as follows: all input and output signals of the internal logic processing unit are active low. The main program operates in a 0.5-second timed loop scanning mode with interrupt priority control. After program initialization, it first scans the level of the rise / fall signal and the high / low speed signal (P1.0~P1.3) after optical coupling isolation of port P1 and stores them in the internal logic storage unit. Then, the program first judges the level signals of P1.0 and P1.1. When both are high, it jumps to the timer program entry point to continue waiting for the next 0.5-second timed loop program. When either P1.0 or P1.1 is low, it executes sequentially. Then, it judges the level signals of P1.2 and P1.3. When both are high, it jumps to the timer program entry point to continue waiting for the next 0.5-second timed loop program. When either P1.2 or P1.3 is low, it executes sequentially. It controls P1.6 to output the rise / fall signal and controls P1.7 to output the frequency signal. The main timer program ends, and then the program jumps to the timer program entry point to wait for the next 0.5-second timed loop program. The direction signal logic on output port P1.6 is as follows: low level is a rising signal, high level is a falling signal, and the initial state is high level; output port P1.7 outputs frequency signals: high speed outputs a 2.66Hz square wave, low speed outputs a 2.00Hz square wave, the initial state is high level, and there is no output.

[0052] The upper and lower limit signals are connected to the external interrupt trigger ports P3.2 and P3.3 of the internal logic processing unit. These two external interrupts have the highest priority. When a low level triggers an interrupt on these two ports, the program jumps directly out of the timer program and enters the interrupt program for processing. The frequency output port P1.7 is set directly to a high level to stop the self-locking stepper motor 5 from moving. Then, the program jumps out of the interrupt program and returns to the 0.5-second timer entry to wait for the next timer cycle to continue execution.

[0053] The advantages of this application are:

[0054] Through analysis of the power supply control principle of the drive mechanism, it was determined that the protection device uses a self-locking stepper motor as the main actuator, and six signals in the power supply of the drive mechanism—the rise and fall signals, the high and low speed signals, and the upper and lower limit signals—as the input control signals of the protection device. An inductive metal detector is used as the cut-off level anti-collision protection signal, and an uninterruptible power supply is provided as the backup power supply for the protection device itself. Together, they form a safe and reliable protection device for land-based tests of the drive mechanism.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective device for land-based testing of a drive mechanism, comprising a land-based test bench, characterized in that: It also includes support devices, sliding protection devices, and control devices; The support device includes a support column (1) and a support column fixing member (2). The support column fixing member (2) is respectively disposed at the lower end of the upper platform and the upper end of the lower platform of the land test bench. The support column (1) is installed between the two support column fixing members (2) as the main support of the sliding protection device. The sliding protection device includes a sliding rail (3), which is closely attached to the support column (1) and vertically erected thereon; a sliding bracket device (4) is also installed on the sliding rail (3), which can make vertical reciprocating motion along the sliding rail (3), and a self-locking stepper motor (5) installed at the lower end of the sliding rail (3), which provides power for the movement of the sliding bracket device (4); The sliding bracket device (4) includes a slide table (4.1) and a bracket (4.2); the sliding bracket device (4) is slidably mounted on the sliding rail (3) via the slide table (4.1); The slide (4.1) is mounted on the sliding rail (3) and driven by the self-locking stepper motor (5), which enables it to make vertical reciprocating motion along the sliding rail (3); The bracket (4.2) includes a first end plate (4.2.1) and a second end plate (4.2.2). The first end plate (4.2.1) is fixedly mounted on the slide table (4.1), and the second end plate (4.2.2) is vertically mounted on the lower end of the first end plate (4.2.1), so that the bracket (4.2) is L-shaped as a whole. It also includes an inductive metal detector (10); the inductive metal detector (10) is installed inside the first end plate (4.2.1) of the bracket (4.2) and is connected to the self-locking stepper motor (5) through a protective signal cable (18); The control device includes a main controller (6) and an uninterruptible power supply (7), wherein the uninterruptible power supply (7) is connected to the main controller (6) via a dedicated cable (8), and the uninterruptible power supply (7) provides a stable and uninterrupted power supply to the protection device; the main controller (6) is connected to the self-locking stepper motor (5) via a control cable (9).

2. The land-based test protection device for a drive mechanism according to claim 1, characterized in that: The position of the support column fixing member (2) can be adjusted according to the position of the drive mechanism installed on the land test bench, and the installation position of the support column (1) will also move accordingly.

3. The land-based test protection device for a drive mechanism according to claim 1, characterized in that: The sliding rail (3) is detachably mounted on the support column (1) by fastening bolts (11), and the installation height can be adjusted.

4. The land-based test protection device for a drive mechanism according to claim 1, characterized in that: The first end plate (4.2.1) is detachably mounted on the slide (4.1) by fastening bolts (11). The height and position of the bracket (4.2) can be adjusted by adjusting the height and position of the first end plate (4.2.1) relative to the slide (4.1).

5. The land-based test protection device for a drive mechanism according to claim 1, characterized in that: The control device also includes a signal cable (12) through which the main controller (6) is connected to the drive mechanism debugging power supply (13).

6. A method for installing a protective device for a drive mechanism during land-based testing, characterized in that: The steps for applying the land-based test protection device for a drive mechanism according to any one of claims 1-5 are as follows: S1: A drive mechanism (15) is located above the land test bench. A lead screw (16) is connected to the lower end of the drive mechanism (15). The lead screw (16) extends vertically downward into the test bench. A simulated load-bearing component (17) made of metal is installed at the lower end of the lead screw (16). S2: The drive mechanism (15) is also connected to a drive mechanism debugging power supply (13) via a power cable (14); the drive mechanism debugging power supply (13) provides electrical energy for the operation of the drive mechanism (15) and transmits the electrical energy to the drive mechanism (15) via the power cable (14); S3: Install support device; Based on the position of the drive mechanism (15) and the downwardly vertically installed screw (16) mounted on the test bench, the installation position of the support column fixing member (2) is determined. The support column fixing member (2) is respectively installed at the lower end of the upper platform and the upper end of the lower platform of the land test bench. The support column (1) is installed between the two support column fixing members. S4: Install a sliding protection device; The sliding rail (3) is vertically installed on the support column (1) and close to the lead screw (16). After adjusting the height of the sliding rail (3), it is fixed with fastening bolts (11). A self-locking stepper motor (5) is installed below the sliding rail (3). A sliding bracket device (4) is installed on the sliding rail (3). The sliding bracket device (4) can slide vertically on the sliding rail (3) to support the simulated load (17). S5: Connecting control device; Install the main controller (6), which is connected to the original drive mechanism debugging power supply (13) on the land test bench via a signal cable (12); The main controller (6) is also connected to an uninterruptible power supply (7) via a dedicated cable (8), which provides a stable and uninterrupted power supply to the protection device; The main controller (6) is connected to the self-locking stepper motor (5) via a control cable (9); The circuit has been inspected and the installation is complete.

7. The installation method of the land-based test protection device for a drive mechanism according to claim 6, characterized in that: The S5: connection control device, further includes an inductive metal detector (10) installed on the sliding bracket device (4), the inductive metal detector (10) being electrically connected to the main controller (6).

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