Hydraulic Impact Bolt and Stepped Piston for High-Energy Impulses
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Solution Overview
Problem
Existing apparatuses are unable to generate high-energy impulse-dynamic process forces efficiently, as they require excessive drive power and cannot deliver energy quickly enough for applications like shearing or compacting, which necessitate strong, high-energy impacts.
Innovation Solution
The apparatus includes a pressure chamber, a connecting chamber, a bolt chamber, and a stepped piston with a valve body, along with pressure reservoirs, allowing for the generation of high-energy impulses and controlled return of the impact bolt, enabling efficient energy storage and rapid delivery with relatively low drive power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a long transmission line is used to transmit hydraulic impulses, then the impulse can reach a remote receiver, but the line's resilient effect strongly reduces the force impulse and energy content
Solution Approach 1:
The transmission system is segmented into discrete chambers (pressure chamber, connecting chamber, bolt chamber) connected by controlled passages rather than a continuous long line. This segmentation maintains impulse strength by limiting the length of each fluid transmission path while achieving remote actuation through staged pressure transmission.
Solution Approach 2:
The connecting chamber acts as an intermediary between the pressure chamber and bolt chamber, transmitting the pressure impulse through a controlled, short passage. This intermediary structure enables impulse transmission over a longer effective distance while maintaining force integrity by minimizing the resilient effect in each individual transmission path.
2Power
If high drive power is supplied to generate strong impulses, then the energy content increases, but the apparatus cannot deliver the energy quickly enough for shearing or compacting applications
Solution Approach 1:
The pressure chamber is pre-filled with pressurized hydraulic medium before the impulse is needed. When the stepped piston displaces, the pre-stored pressurized fluid immediately generates the high-energy impulse without requiring high drive power at the moment of delivery, thus achieving both high energy content and rapid energy delivery.
Solution Approach 2:
The system changes the pressure parameter of the hydraulic medium from a steady state to a rapidly increasing state during the impulse generation. This parameter change enables the system to deliver high energy in a very short time without requiring continuously high drive power, resolving the contradiction between power input and energy delivery speed.
3Duration of action of moving object
If the impact bolt is allowed to travel freely to the end position, then the impulse duration is maximized, but the bolt suffers excessive wear and potential damage
Solution Approach 1:
The spring element is positioned in advance at the end of the bolt chamber to cushion the impact bolt before it reaches the hard stop. This beforehand cushioning extends the impulse duration by providing a controlled deceleration phase while preventing excessive wear and damage to the bolt by avoiding direct impact with the hard stop.
4Quantity of substance
If the orifice remains open to allow fluid flow, then the volumetric flow rate is high, but the pressure impulse cannot build up sufficiently
Solution Approach 1:
The stepped piston performs periodic action by first closing the orifice to build pressure impulse, then opening it to release the pressurized fluid as a high-flow impulse. This periodic closing and opening enables the system to achieve both high pressure impulse and high volumetric flow rate at different phases of the cycle, resolving the contradiction between these two parameters.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves high-energy, impulse-dynamic process forces with a short impulse duration and sufficient volumetric flow rate, suitable for applications like shearing or compacting, while minimizing wear and ensuring controlled energy release.
Implementation Method 1
a pressure chamber (10) in which pressurised hydraulic medium (91) is arranged; means (14) for temporarily increasing the pressure of the hydraulic medium (91) located in the pressure chamber (10)
Implementation Method 2
a connecting chamber (20) arranged downstream of the pressure chamber (10) and connected thereto; a bolt chamber (30) arranged downstream of the connecting chamber (20) and connected thereto
Implementation Method 3
an impact bolt (35) arranged so as to be displaceable in the bolt chamber (30)... achieving high-energy, impulse-dynamic process forces with a short impulse duration
Data Source
AI summary
An apparatus for generating impulse-dynamic process forces includes a pressure chamber, a connecting chamber and a bolt chamber. The pressure chamber includes a plunger arranged to be pushed into the pressure chamber for compression of a hydraulic medium located therein. In the connecting chamber there is displaceably arranged a stepped piston which has a valve body for closing an orifice connecting the pressure chamber to the connecting chamber. In the bolt chamber there is located a displaceable impact bolt which has a first bolt portion and a second bolt portion. The first bolt portion seals an interior space of the bolt chamber that surrounds the second bolt portion. Connected to the bolt chamber there is at least one pressure reservoir containing pressurised pressure medium, which pressure reservoir is in communicating connection via a connection port with the interior space of the bolt chamber.