Transfer tray with self-locking disassembly structure and locking and releasing method thereof

Abstract

The invention discloses a transfer tray with a self-locking disassembly structure and a locking and releasing method thereof. The transfer tray comprises a tray main body with a magnetic control slot, and a composite frame of the tray main body comprises a carbon fiber reinforced polymer matrix and an electrorheological fluid bag body; the electrorheological fluid bag body is attached to the inner wall of the slot and is converted into a solid state after being electrified; the Halbach permanent magnet array integrated at the bottom of the slot is formed by arranging N52 neodymium-iron-boron magnets according to a pi / 4 phase difference, and the magnetic field gradient intensity is greater than or equal to 5T / m; a soft magnetic alloy label is arranged in the module and is made of a Fe78Si9B13 amorphous strip, the magnetic susceptibility x is larger than or equal to 10, and magnetic potential well locking is formed by the soft magnetic alloy label and the Halbach array; the phase change driving release assembly is arranged at the bottom of the slot and comprises lead zirconate titanate piezoelectric ceramics and a nickel-titanium shape memory alloy ejector rod; according to the transfer tray, through the design of non-contact magnetic-machine double locking, intelligent closed-loop control and extreme environment adaptation, the problems that in the prior art, positioning precision is low, the service life is short, and environment adaptability is poor are solved, and the transfer tray has subversive application potential in the field of precision electronics.

Description

Technical Field

[0001] The present invention belongs to the field of modular storage systems, and particularly relates to a transfer tray with a self-locking disassembly structure and its locking and releasing method. Background Art

[0002] In the fields of power equipment manufacturing and intelligent warehousing, the transfer and storage of single-phase modules, three-phase modules, and terminal modules require frequent switching of pallets of different specifications. The traditional solutions have significant defects:

[0003] Traditional transfer pallets are usually designed for a single module (such as single-phase or three-phase) only and cannot be compatible with multiple types of modules, resulting in low logistics efficiency and doubling of equipment costs.

[0004] The existing pallets are structurally separated from the storage cabinets, and the modules need to be secondarily transported from the pallets into the cabinets, which is cumbersome to operate and easily damages the interfaces (such as the terminal contact offset > 0.5 mm).

[0005] Ordinary partitioned storage cabinets cannot be directly inserted and matched with the pallets. When stacking modules, manual operation space needs to be reserved, and the warehousing density is reduced by more than 30%.

[0006] Mechanical buckles or general magnetic attraction structures are difficult to adapt to different module sizes, resulting in insecure fixation or excessive disassembly resistance.

[0007] In view of the above problems, there is an urgent need for a transfer pallet that combines multi-module compatibility, direct connection ability with storage cabinets, and intelligent locking to improve the logistics efficiency of power equipment and the level of warehousing intelligence. Summary of the Invention

[0008] The purpose of the present invention is as follows: The present invention aims to provide a transfer tray with a self-locking disassembly structure and its locking and releasing method. Through non-contact magnetic-mechanical dual locking, intelligent closed-loop control, and extreme environment adaptation design, the transfer tray solves the pain points of low positioning accuracy, short service life, and poor environmental adaptability in traditional technologies, and has potential for disruptive applications in the field of precision electronics.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A transfer tray with a self-locking disassembly structure, comprising:

[0011] A tray body with a magnetically controlled slot, whose composite frame comprises a carbon fiber reinforced polymer matrix and an electrorheological fluid bladder; the electrorheological fluid bladder is attached to the inner wall of the slot and turns into a solid state after being electrified;

[0012] A Halbach permanent magnet array integrated at the bottom of the slot, arranged by N52 neodymium iron boron magnets with a phase difference of π / 4, and the magnetic field gradient intensity ≥ 5 T / m;

[0013] The module is built-in with a soft magnetic alloy tag, which is made of Fe78Si9B13 amorphous strip, and the magnetic susceptibility χ≥10 4 , and forms a magnetic potential well lock with the Halbach array;

[0014] The phase change driven release component is set at the bottom of the slot and includes lead zirconate titanate piezoelectric ceramics and a nickel-titanium shape memory alloy ejector rod.

[0015] Among them, the electrorheological fluid capsule contains a base fluid and dielectric particles. The base fluid is silicone oil; the dielectric particles are TiO 2 @SiO 2 core-shell structure, with a particle size of 5-10μm and a volume fraction of 30-35%.

[0016] Among them, the soft magnetic alloy tag contains an amorphous strip with a thickness of 20±2μm, and a 2μm titanium nitride coating is covered on the surface; the magnetic permeability μ≥1.5×10 5 , and the saturation magnetization intensity Ms = 1.6×10 6 A / m.

[0017] Among them, the magnetic field gradient intensity of the Halbach permanent magnet array is 5.5-7.5T / m, and the range of the magnet spacing d is 5.0-6.5mm.

[0018] Among them, the thickness of the amorphous strip is 19-21μm, the surface roughness Ra of the titanium nitride coating ≤0.1μm, and the hysteresis loss ≤2.5J / m 3 .

[0019] Among them, the size of the N52 neodymium iron boron magnet is 5×5×20mm 3 , the tolerance of the adjacent magnet spacing is ±0.05mm, and the fluctuation of the magnetic field gradient intensity ≤±3%.

[0020] Among them, the locking method of the tray includes:

[0021] After the module is inserted, apply an electric field of 3kV / mm to the electrorheological fluid capsule to make its shear strength ≥50kPa;

[0022] The Halbach array and the soft magnetic tag are coupled to form a magnetic potential well, and the potential well depth U = 2.5±0.3J;

[0023] The locked state data is encrypted into a 128-bit feature code and uploaded to the cloud through the LoRaWAN protocol.

[0024] Among them, the release method of the tray includes:

[0025] When unlocking, apply a 10A pulsed current to the shape memory alloy ejector rod to raise its temperature to 50±2℃ and generate a displacement of 4.0±0.1mm to push the module away;

[0026] Synchronously activate the piezoelectric ceramic to generate a reverse electric field with an electric field strength of -3 kV / mm ± 5%, eliminating the remanent magnetism of the soft magnetic tag to Br < 0.01 T;

[0027] The electrorheological fluid bladder switches to the zero electric field state.

[0028] Among them, the pulse current is 9 - 11 A, the temperature control range is 48 - 52 °C, and the displacement accuracy is ±0.05 mm.

[0029] Among them, the method for generating the reverse electric field of the piezoelectric ceramic includes:

[0030] The high - voltage amplifier module outputs a voltage of -30 kV, the voltage ripple < 0.1%, and the temperature drift compensation coefficient is ±5 ppm / °C;

[0031] Step - up voltage control: Apply voltage in three levels, in the order of 0 → -10 kV → -20 kV → -30 kV, with an interval of 5 ms between each level;

[0032] In the steady - state maintenance stage, PWM modulation is adopted, the duty cycle is 95%, and the electric field strength range is -2.85 kV / mm to -3.15 kV / mm.

[0033] In summary, due to the adoption of the above - mentioned technical solutions, the beneficial effects of the present invention are:

[0034] 1. Traditional mechanical buckles rely on physical contact for locking, are prone to wear, and have low positioning accuracy. The present invention forms a magnetic potential well through the coupling of the Halbach array and the soft magnetic tag, realizing non - contact locking, without mechanical wear, and significantly improving the insertion and extraction life.

[0035] 2. Existing technologies only rely on single magnetic attraction or mechanical fixation. The present invention innovatively combines the solidification of electrorheological fluid and the adsorption of the magnetic potential well to form a dual - lock: among them, the electrorheological fluid provides initial rigid support to suppress high - frequency vibration, and the magnetic potential well provides non - contact holding force to avoid positioning deviation caused by mechanical friction, which is suitable for safe transportation.

[0036] 3. Traditional release requires manual operation or simple electronic control. The present invention realizes millisecond - level unlocking through the displacement of the SMA ejector rod and the reverse electric field of the piezoelectric ceramic, and the cooperation error between the SMA ejector rod and the piezoelectric ceramic is extremely small.

[0037] 4. Traditional electromagnetic locks require continuous power supply. The present invention adopts passive magnetic potential well locking and pulse drive (the energy consumption for single - time unlocking is 15 J), and the comprehensive energy efficiency is increased by 80%. At the same time, 128 - bit AES - 256 encryption + LoRaWAN protocol has a very high anti - cracking level; the operation data is encrypted and stored in a tamper - proof chip, supporting blockchain traceability.

[0038] Through non-contact magnetic-mechanical dual locking, intelligent closed-loop control, and extreme environment adaptation design, this transfer tray solves the pain points of traditional technologies such as low positioning accuracy, short lifespan, and poor environmental adaptability, and has disruptive application potential in the field of precision electronics. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is an overall schematic diagram of the transfer tray of the present invention;

[0040] Figure 2 is a cross-sectional schematic diagram of the transfer tray of the present invention.

[0041] In the figure: 101, tray main body; 101a, carbon fiber reinforced polymer matrix; 101b, electrorheological fluid bladder; 102, Halbach permanent magnet array; 103, module; 104, phase change drive release assembly; 104a, lead zirconate titanate piezoelectric ceramic; 104b, nickel-titanium shape memory alloy ejector rod. DETAILED DESCRIPTION OF THE INVENTION

[0042] In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] See Figure 1 and 2 , this invention relates to a transfer tray with a self-locking disassembly structure, including:

[0044] A tray main body 101 with a magnetically controlled slot, whose composite frame includes a carbon fiber reinforced polymer matrix 101a and an electrorheological fluid bladder 101b; the electrorheological fluid bladder 101b is attached to the inner wall of the slot and turns into a solid state after being electrified;

[0045] A Halbach permanent magnet array 102 integrated at the bottom of the slot, arranged by N52 neodymium iron boron magnets with a π / 4 phase difference, and the magnetic field gradient strength ≥ 5 T / m;

[0046] The module 103 is internally provided with a soft magnetic alloy label, made of Fe 78 Si 9 B 13 amorphous strip, with a magnetic susceptibility χ ≥ 10 4 , forming a magnetic potential well lock with the Halbach array;

[0047] A phase change drive release assembly 104, arranged at the bottom of the slot, including a lead zirconate titanate piezoelectric ceramic 104a and a nickel-titanium shape memory alloy ejector rod 104b.

[0048] Further, the electrorheological fluid bladder 101b comprises a base fluid and dielectric particles, the base fluid being silicone oil; the dielectric particles being TiO 2 @SiO 2 core-shell structure, with a particle size of 5 - 10 μm and a volume fraction of 30 - 35%.

[0049] Further, the soft magnetic alloy tag comprises an amorphous strip with a thickness of 20 ± 2 μm, and a titanium nitride coating with a thickness of 2 μm on the surface; the magnetic permeability μ ≥ 1.5×10 5 , and the saturation magnetization Ms = 1.6×10 6 A / m.

[0050] Further, the magnetic field gradient intensity of the Halbach permanent magnet array 102 is 5.5 - 7.5 T / m, and the range of the magnet spacing d is 5.0 - 6.5 mm.

[0051] Further, the thickness of the amorphous strip is 19 - 21 μm, the surface roughness Ra of the titanium nitride coating ≤ 0.1 μm, and the hysteresis loss ≤ 2.5 J / m 3 .

[0052] Further, the size of the N52 neodymium iron boron magnet is 5×5×20 mm 3 , the tolerance of the adjacent magnet spacing is ±0.05 mm, and the fluctuation of the magnetic field gradient intensity ≤ ±3%.

[0053] Further, the locking method of the tray includes:

[0054] After the module 103 is inserted, an electric field of 3 kV / mm is applied to the electrorheological fluid bladder 101b to make its shear strength ≥ 50 kPa;

[0055] The Halbach array 102 and the soft magnetic tag are coupled to form a magnetic potential well, and the depth of the potential well U = 2.5 ± 0.3 J;

[0056] The locking state data is encrypted into a 128-bit feature code and uploaded to the cloud through the LoRaWAN protocol.

[0057] Further, the releasing method of the tray includes:

[0058] When unlocking, a pulsed current of 10 A is applied to the shape memory alloy ejector rod 104b to raise its temperature to 50 ± 2 °C and generate a displacement of 4.0 ± 0.1 mm to push away the module 103;

[0059] Synchronously activate the piezoelectric ceramic 104a to generate a reverse electric field with a field strength of -3 kV / mm ± 5% to eliminate the remanence of the soft magnetic tag to Br < 0.01 T;

[0060] The electrorheological fluid bladder 101b is switched to the zero electric field state.

[0061] Further, the pulsed current is 9 - 11 A, the temperature control range is 48 - 52 °C, and the displacement accuracy is ±0.05 mm.

[0062] Further, the method for generating the reverse electric field of the piezoelectric ceramic 104a includes:

[0063] The high - voltage amplifier module outputs a voltage of - 30 kV, the voltage ripple < 0.1%, and the temperature drift compensation coefficient is ±5 ppm / °C;

[0064] Step - up voltage control: The voltage is applied in three levels, in the order of 0 → - 10 kV → - 20 kV → - 30 kV, with an interval of 5 ms between each level;

[0065] In the steady - state maintenance stage, PWM modulation is adopted, the duty cycle is 95%, and the electric field strength range is - 2.85 kV / mm to - 3.15 kV / mm.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transfer pallet with a self-locking disassembly structure, characterized in that: include: A tray body (101) with a magnetically controlled slot, wherein the composite frame comprises a carbon fiber reinforced polymer matrix (101a) and an electrorheological fluid capsule (101b); the electrorheological fluid capsule (101b) is attached to the inner wall of the slot and is converted into a solid state after power is supplied; The Halbach permanent magnet array (102) integrated at the bottom of the slot is composed of N52 neodymium iron boron magnets arranged with a phase difference of π / 4, and the magnetic field gradient intensity is ≥5 T / m; The module (103) has a built-in soft magnetic alloy tag made of Fe 78 SiC 13 Made of amorphous strip, magnetic susceptibility χ≥10 4 , forming a magnetic potential well lock with the Halbach array; The phase change drive release component (104) is arranged at the bottom of the slot and contains lead zirconate titanate piezoelectric ceramics (104a) and a nickel-titanium shape memory alloy push rod (104b).

2. A transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The electrorheological fluid capsule (101b) comprises a base liquid and dielectric particles, wherein the base liquid is silicone oil; the dielectric particles are TiO2@SiO2 core-shell structures, with a particle size of 5-10 μm and a volume fraction of 30-35%.

3. A transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The soft magnetic alloy tag comprises an amorphous strip with a thickness of 20±2 μm, and a 2 μm titanium nitride coating is coated on the surface; Magnetic permeability μ≥1.5×10 5 , saturation magnetization Ms = 1.6 × 10 6 A / m.

4. A transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The magnetic field gradient intensity of the Halbach permanent magnet array (102) is 5.5-7.5 T / m, and the magnet spacing d ranges from 5.0-6.5 mm.

5. The transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The thickness of the amorphous strip is 19-21 μm, the surface roughness of the titanium nitride coating is Ra≤0.1 μm, and the hysteresis loss is ≤2.5 J / m 3 .

6. The transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The N52 NdFeB magnet has a size of 5×5×20 mm 3 , the spacing tolerance between adjacent magnets is ±0.05mm, and the magnetic field gradient intensity fluctuation is ≤±3%.

7. The transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The locking method of the tray includes: After the module (103) is inserted, a 3kV / mm electric field is applied to the electrorheological fluid capsule (101b) to make its shear strength ≥50kPa; The Halbach array (102) is coupled with the soft magnetic tag to form a magnetic potential well, and the potential well depth is U=2.5±0.3J; The lock status data is encrypted into a 128-bit signature code and uploaded to the cloud via the LoRaWAN protocol.

8. The transfer pallet with a self-locking disassembly structure according to claim 1, characterized in that: The tray release method includes: When unlocking, a 10A pulse current is applied to the shape memory alloy push rod (104b), causing its temperature to rise to 50±2°C and produce a displacement of 4.0±0.1mm, thereby pushing open the module (103); Synchronously activating the piezoelectric ceramic (104a) to generate a reverse electric field with a field strength of -3kV / mm±5% to eliminate the residual magnetism of the soft magnetic label to Br<0.01T; The electrorheological fluid capsule (101b) switches to a zero electric field state.

9. A transfer pallet with a self-locking disassembly structure according to claim 8, characterized in that: The pulse current is 9-11A, the temperature control range is 48-52°C, and the displacement accuracy is ±0.05mm.

10. The transfer pallet with a self-locking disassembly structure according to claim 8, characterized in that: The reverse electric field generation method of the piezoelectric ceramic (104a) includes: The high-voltage amplifier module outputs -30kV voltage, voltage ripple <0.1%, temperature drift compensation coefficient ±5ppm / ℃; Step-up control: voltage is applied in three levels, in the order of 0→-10kV→-20kV→-30kV, with an interval of 5ms between each level; The steady-state maintenance stage uses PWM modulation with a duty cycle of 95% and an electric field strength range of -2.85 kV / mm to -3.15 kV / mm.

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