Safe propellant crushing device
The propellant safety crushing device uses an electric push rod and a DC geared motor to drive a milling cutter to cut and crush the propellant, which solves the problems of low efficiency and safety hazards in the existing technology and realizes a safe and efficient propellant crushing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-23
- Publication Date
- 2026-03-27
AI Technical Summary
Existing technologies have problems with low efficiency and safety hazards in the process of propellant crushing. Manual operation is inefficient and poses a risk of propellant combustion.
A propellant safety crushing device was designed, which adopts a propellant pellet fixing component, a cutting and crushing component, a remote control component, and a DC power supply. The corn milling cutter is driven to rotate slowly by an electric push rod and a DC geared motor to achieve the cutting and crushing of the propellant, and the operation is isolated from human.
It achieves safe and efficient pulverization of propellants, avoids the safety risks of manual operation, and maintains the physicochemical properties of the propellants, making it suitable for propellant sensitivity testing.
Smart Images
Figure CN224051725U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of explosive sensitivity test technology, specifically relates to a launching propellant safe crushing device. BACKGROUND
[0002] Before carrying out sensitivity test to extrusion forming gunpowder, need to carry out crushing and sieving, take the grain of 0.20mm~0.45mm and carry out test. Launching propellant sensitivity performance test sample processing adopts self-made saw, file, scissors, cutter, grinding bowl and other tools, and the launching propellant to be measured is operated by hand to reach the specified grain size range. There are two problems in the hand operation of beating, sawing, shearing and grinding. One is efficiency problem: the efficiency of launching propellant sample beating, sawing, shearing and grinding is low, and about 5g of sample of 0.20mm~0.45mm grain size is needed for average one sample sensitivity test, and the average hand operation of one sample needs 2h~3h, accounting for 60% of the whole test process. The second is safety problem: the operation of beating, sawing, shearing and grinding in the process of launching propellant sample processing is easy to cause heat accumulation of launching propellant, and when the heat accumulation point reaches the critical value of launching propellant combustion, it is easy to cause launching propellant combustion, and the direct contact of operator with dangerous goods has great safety hazard.
[0003] In view of the characteristics that the launching propellant may be combusted and exploded under heat, pressure and impact, the traditional mechanical grinding and crushing method of material cannot be used, and in view of the characteristics of launching propellant sensitivity performance test, chemical method cannot be used to dissolve or forcibly crush the launching propellant into slurry after increasing the moisture of launching propellant. In view of the above, the slow cutting method is used to realize the crushing of launching propellant grain. CONTENT OF THE UTILITY MODEL
[0004] (I) technical problem to be solved
[0005] The utility model discloses a launching propellant safe crushing device to solve the technical problem of how to realize the cutting and crushing process of man-machine isolation of launching propellant without damaging the physical and chemical properties of launching propellant.
[0006] (II) technical scheme
[0007] In order to solve the above technical problem, the utility model provides a kind of launching propellant safe crushing device, and the launching propellant safe crushing device includes launching propellant grain fixed component, launching propellant grain cutting and crushing component, remote control component and direct current power supply;Wherein,
[0008] The launching propellant grain fixed component is fixed to the launching propellant grain by sample fixed clamp;
[0009] The propellant grain cutting and crushing assembly comprises an electric push rod, a motor support frame, a direct current speed reduction motor, a coupling and a milling cutter; the milling cutter is connected with the output end of the direct current speed reduction motor through the coupling, and the milling cutter is driven by the direct current speed reduction motor to rotate at a low speed, so that the propellant grain is cut and crushed by the milling cutter; the output end of the electric push rod is rigidly connected with the direct current speed reduction motor through the motor support frame, and the direct current speed reduction motor and the milling cutter are driven by the electric push rod to move integrally, so that the feed and the retreat of the cutting process of the propellant grain are realized.
[0010] The direct current power supply is used for supplying power for the direct current speed reduction motor and the electric push rod.
[0011] The remote control assembly is used for controlling the forward and backward movement of the electric push rod and the forward and reverse rotation of the direct current speed reduction motor.
[0012] Further, the propellant grain fixing assembly, the propellant grain cutting and crushing assembly and the direct current power supply are fixedly connected with the support table.
[0013] Further, the milling cutter is a corn milling cutter.
[0014] Further, when the corn milling cutter crushes the propellant grain, the particle size is controlled to be 0.2mm-0.45mm.
[0015] Further, the specification of the corn milling cutter is 6mm*6mm*17mm*50mm.
[0016] Further, the rotating speed range of the direct current speed reduction motor is 50r / min-120r / min.
[0017] Further, the thrust of the electric push rod is 200N, the stroke is 25mm, and the forward speed of the push rod is 2mm / s.
[0018] Further, the direct current power supply provides a 24V direct current power supply, and the output accuracy is ≤2%.
[0019] Further, the direct current power supply displays the current size in the device loop in real time.
[0020] Further, the remote control assembly is remotely controlled through a control handle.
[0021] (Three) beneficial effects
[0022] The utility model provides a propellant safety breaking device, including propellant particle fixed subassembly, propellant particle cutting and crushing subassembly, remote control subassembly and direct current power supply, propellant particle fixed subassembly carries out the fixed through sample fixed clamp to propellant particle, propellant particle cutting and crushing subassembly includes electric push rod, motor support frame, direct current speed reducer, shaft coupling and corn milling cutter, through electric push rod and drives direct current speed reducer and corn milling cutter whole movement, realizes the feeding and the retreat of propellant particle cutting process operation, direct current power supply is used for direct current speed reducer and electric push rod power supply, remote control subassembly is used for controlling the advance and the retreat of electric push rod and direct current speed reducer's positive rotation and inversion. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is propellant safety breaking device principle schematic drawing of the utility model,
[0024] Figure 2 It is control handle circuit design drawing in the utility model. DETAILED DESCRIPTION
[0025] In order to make the purpose, content and advantage of the utility model more clear, below combining with the drawings and example, the specific embodiment of the utility model is further detailedly described.
[0026] The embodiment proposes a propellant safety breaking device, and the composition is as Figure 1 Shown, mainly including propellant particle fixed subassembly, propellant particle cutting and crushing subassembly, remote control subassembly, direct current power supply and support platform.
[0027] Propellant particle fixed subassembly, propellant particle cutting and crushing subassembly and direct current power supply are all with support platform fixed connection, guarantee the stable reliable of propellant particle cutting process.
[0028] Propellant particle fixed subassembly carries out the fixed through sample fixed clamp to propellant particle.
[0029] Propellant particle cutting and crushing subassembly includes electric push rod, motor support frame, direct current speed reducer, shaft coupling and corn milling cutter, wherein, corn milling cutter is connected through shaft coupling with the output end of direct current speed reducer, corn milling cutter is driven by direct current speed reducer and rotates slowly, and the cutting of propellant particle is carried out by corn milling cutter, and the particle size is 0.2mm~0.45mm. The output end of electric push rod is rigidly connected with direct current speed reducer through motor support frame, and direct current speed reducer and corn milling cutter whole movement are driven by electric push rod, and the feeding and the retreat of propellant particle cutting process operation are realized.
[0030] In this embodiment, the cutting size of the corn cutter is less than 1mm, and therefore the corn cutter with a specification of 6mm*6mm*17mm*50mm is selected. According to the need of crushing, the rotating speed of the direct-current speed reducer should be relatively slow to ensure that the heat generated in the process of cutting the propellant is dissipated as much as possible, and the rotating speed range is mainly 50r / min~120r / min. The pushing force of the electric push rod should be able to ensure that the system moves forward reliably, the speed of the electric push rod should be less than the cutting forward speed of the corn cutter to avoid the cutter being stuck, and the stroke of the electric push rod is slightly greater than the diameter of the propellant grain, and therefore the pushing force of the electric push rod selected is 200N, the stroke is 25mm, and the forward speed of the electric push rod is 2mm / s.
[0031] A direct-current power supply is used to supply power for the direct-current speed reducer and the electric push rod, and provides a 24V direct-current power supply with an output accuracy of ≤2% and real-time display of the current size in the loop of the device.
[0032] The remote control assembly controls the forward and backward movement of the electric push rod and the forward and reverse rotation of the direct-current speed reducer through a control handle. The circuit of the control handle is as shown in Figure 2 The control handle can realize remote control of the cutting of the propellant grain by controlling the on-off of the control circuit, and ensures the safety of the operator.
[0033] When the sensitivity test of the propellant grain is performed, the cutting and crushing device of the utility model can ensure safe crushing of the propellant grain without changing the physical and chemical properties of the propellant grain.
[0034] 1. Sensitivity test of four types of propellant grain samples
[0035] During the cutting and crushing process of the samples, the propellant grain samples are fixed by using a sample clamp, and the forward and backward movement of the electric push rod and the rotation of the direct-current speed reducer are controlled by an operator holding a control handle remotely, so that the operator does not directly contact the dangerous goods during the cutting and crushing process of the samples.
[0036] The sensitivity test is performed on four test samples obtained by cutting and crushing the four test samples of sample A, sample B, sample C and sample D by using the device of the utility model and by traditional manual cutting, and the test results are as follows.
[0037] Table 1 Sensitivity test results of four types of propellant grain samples
[0038]
[0039]
[0040] As shown by the test results, there is no obvious difference between the test results of the two schemes, which verifies the feasibility of the propellant safety crushing device of the utility model in the sensitivity test of the propellant grain.
[0041] 2. Four type propellant sample man-machine isolation cutting and impact sensitivity test
[0042] The four test samples of sample A, sample B, sample C and sample D are subjected to impact sensitivity test after being subjected to cutting and crushing treatment by the device of the utility model and traditional manual cutting treatment, and the test results are as follows.
[0043] Table 2 Four type propellant sample man-machine isolation cutting and impact sensitivity test results
[0044]
[0045] It can be seen from the test results that there is no obvious difference between the test results of the two schemes, and the feasibility of the propellant safety crushing device of the utility model in the propellant particle impact sensitivity test is also verified.
[0046] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the technical principles of the utility model, a number of improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the utility model.
Claims
1. A propellant charge safety breaking device, characterized in that The propellant safety breaking device comprises a propellant particle fixing assembly, a propellant particle cutting and crushing assembly, a remote control assembly and a direct current power supply, wherein The propellant particle fixing assembly fixes the propellant particle through a sample fixing clamp; The propellant particle cutting and crushing assembly comprises an electric push rod, a motor support frame, a direct current speed reducer, a coupling and a milling cutter, wherein the milling cutter is connected with the output end of the direct current speed reducer through the coupling, the milling cutter is driven by the direct current speed reducer to rotate at a low speed, the propellant particle is cut and crushed by the milling cutter, the output end of the electric push rod is rigidly connected with the direct current speed reducer through the motor support frame, the direct current speed reducer and the milling cutter are moved as a whole by the electric push rod, and the feeding and retracting operations in the cutting process of the propellant particle are realized; The direct current power supply is used for supplying power to the direct current speed reducer and the electric push rod; The remote control assembly is used for controlling the feeding and retracting of the electric push rod and the forward and reverse rotation of the direct current speed reducer.
2. The propellant charge safety fracturing device according to claim 1, characterised in that The propellant particle fixing assembly, the propellant particle cutting and crushing assembly and the direct current power supply are fixedly connected with the support table.
3. The propellant charge safety fracturing device of claim 1, wherein The milling cutter is a corn milling cutter.
4. The propellant charge safety fracturing device according to claim 3, characterized in that When the corn milling cutter crushes the propellant particle, the particle size is controlled to be 0.2mm-0.45mm.
5. The propellant charge safety fracturing device of claim 3, wherein The specification of the corn milling cutter is 6mm*6mm*17mm*50mm.
6. The propellant charge safety fracturing device of claim 1, wherein The rotating speed range of the direct current speed reducer is 50r / min-120r / min.
7. The propellant charge safety fracturing device of claim 1, wherein The thrust of the electric push rod is 200N, the stroke is 25mm, and the feeding speed of the push rod is 2mm / s.
8. The propellant charge safety fracturing device of claim 1, wherein The direct current power supply provides 24V direct current power supply, and the output accuracy is ≤2%.
9. The propellant charge safety fracturing device of claim 1, wherein The direct current power supply displays the current size in the device loop in real time.
10. The propellant charge safety fracturing device of claim 1, wherein The remote control assembly is remotely controlled through a control handle.