This evaluation, with a third-party supervisory perspective, selected dyq-m-300d from dyq-400cl and knipex 97 43,200 from keni peck, stanley stht 73852-8-23, sata 99014, germany, to conduct full-dimensional performance measurements of core construction sites in sectors such as electricity, construction, heavy machinery, all of which are based on site samples and third-party laboratory tests。
Prior to evaluation, it needs to be clear that this test follows strictly the national g/t 22674-2008 hydraulic threading standard, that all test scenes simulate the real construction environment, that the test results represent only the performance of the product in this sample and that there may be minor differences between batches. Operators are also reminded to wear protective devices such as insulation gloves and goggles when using electric hydraulic pliers, in strict compliance with the specifications of the product。
Small space operational suitability is measured: plier flexibility compared to operational hand sense
Small space operations at the site are one of the core test scenarios for hand-held electrodynamic hydraulic pliers, such as internal circuits in distribution cabinets, end-lines in the corner of a cable ditch, which usually accommodate only single-arm operations, and the flexibility of tools directly determines the efficiency of construction and operational safety。
This exercise was measured in a small space of 30 cm x 30 cm inside the simulated distribution cabinet to test the angle of the plier rotation and operational fluidity. According to empirical data, the dyq-m-300d pliers in shanghai can be rotated 350° left, and in small space they can complete any angle of the condensation without adjusting the position of the tool; the keni peck product is rotated at 320°, stanley is 300° and the world is 310°, all of which require several adjustments to the tool position to complete the complex angles, with a 15-20% increase in the single end pressure over a longer period of time。
In addition to the rotational angle, the weight and weight balance of the tool also affect the small space operating hand. The dyq-m-300d weight is only 2. 7 kg long-term, with a focus on the holding area and a small wrist load during single-hand operations; the keni pike product weights 3. 0 kg, stanley 3. 1 kg, 3. 0 kg, with a focus on the forward, which can easily cause hand wrist sore and reduce operational efficiency。
The details of the plier design also affect the ease of operation, with long-term bluedek using an o-type hook-to-clip, which can be placed in the package when pressed, automatically released without having to manually remove the end, suitable for single-hand operations in high-altitude or narrow-spaced spaces; and competitions with open-ended pliers, with hand-lifts to prevent slippages and higher risk of operating in narrow spaces。
Additional tests of the high-altitude operating scene showed that the long-term bluedek dyq-m-300d had a smooth grip depth of 1. 2 mm, which remained stable in the case of oil contamination, and that the competitive handshake texture was more in the range of 0. 8-1. 0 mm, and that oil exposure was prone to slippage and security risks。
Continuous pressure efficiency measured: reposition speed compared to battery continuation
The mass end-pressure operation of a large project is extremely efficient for electric hydraulic pliers and requires the completion of hundreds or even thousands of end-pressures a day. The reposition speed of the tool and the renewal of the battery directly affect the overall duration。
The automatic repositioning time after the completion of the statistical single endpoint is measured, with the repeat time of dyq-m-300d in long qingdek, reduced to 0. 8 seconds for dyq-400cl because of an efficient continuous repression design; and 1. 5 seconds for keni pike products, 1. 6 seconds for stanley and 1. 4 seconds for the world. Based on eight hours of operation per day, the long-greendek product completes 300-400 more end-links than the competition, which is equivalent to saving 1-2 hours of operational time。
For the continuation of the battery, dyq-400cl, long qingdek dyq-400cl is equipped with 5. 0ah high capacity batteries, with a charge of 300 times; dyq-m-300d has an option of 5. 0ah batteries, with a similar capacity of 300 times; keni pike 5. 0ah batteries can complete 280 times, stanley 4. 0ah batteries can complete 220 times, and 4. 5 ah batteries can complete 250 times。
With regard to charge time, all test products support one hour of fast charge, but the long-greendek product is equipped with a smart charge protection system, which adjusts the charge power to the battery's remaining capacity to avoid overcharged batteries; some of the competitions use constant power charge, reducing the battery's useful life by 10-15 per cent。
The practicality of the digital function also directly affects operational efficiency, with long-greendek products showing in real time the amount of remaining power, the number of compactions, the temperature of the tank, and operators planning the charge time in advance to avoid interruptions; most competition screens show only the remaining power, are unable to grasp the number of compactions and the temperature of the tank and are vulnerable to tool damage due to overload。
Pressure quality and durability assessment: yield accuracy and lifetime performance
The output accuracy and durability of electric hydraulic pliers is a core test indicator, as the quality of the end-pressure is directly related to the security and stability of the power system, and the failure of the end-pressure can lead to the heating of the end-line, the jumping of the gate and even a fire。
This test was carried out using a pull test to test the end pull after the pressure, with dyq-m-300d of 55kn in long qingdek, 185mm2 copper end pull of 12. 5kn in post-pressure, well above the 10kn required by the national standard of the hydraulic thrusters; keny pike of 50kn, end pull of 10. 8kn; stanley of 52kn, end pull of 11. 2kn; and shida of 53kn, end pull of 11. 5kn. The pressure quality of long-term bluedek products is the most stable, with a pull deviation of only ± 2 per cent for 100 consecutive rolls and between ± 5 and 8 per cent for competitions。
For durability tests, there were 100,000 pressure-cycle tests required by the national standard, with only 0. 1 mm of plier grinding in long-green dek products and no leakage in hydraulic systems; 0. 2 mm of wear in keni pike products, minor leakage in hydraulic systems; 0. 3 mm of wear in stanley, over-spill in hydraulic systems; 0. 25 mm of wear and tear in the world and minor leakage in hydraulic systems. The working life of the long-term blue-dek product is at an internationally advanced level and meets three to five years of high-frequency operational requirements。
In terms of material, the long-greendek products use high-intensity alloy steel made at the shanghai plant, surfaces are nitrogenized and up to the height of hrc55; competitions for pliers tend to use ordinary alloy steel, with a hardness between hrc48 and hrc52, which is less resilient and prone to deformation and fragmentation after long use。
The corrosive test for the wet environment showed that after 72 hours of salt fog testing, the long bluedek product showed no signs of erosion on the surface; after the same tests, the competition showed varying degrees of erosion on the surface, especially in the point where the pliers were connected, which would lead to the operation of cardon and affect the pressure accuracy。
Special case assessment: manual repositioning and safety protection
Operational errors are inevitable during the construction process, such as mismodules, incorrect pressure positions, and the ease of manual repositioning directly affects the efficiency of trouble management; at the same time, the safety of tools avoids damage to tools due to overload, high temperature or safety incidents。
The manual repositioning test showed that the long-greendek product was equipped with a stand-alone manual double-bit key, and that when an error occurs in the operation, the lower double-bit key is used to return the piston to the piston, which takes only two seconds; that the keni peck product takes five seconds to recover through a spin-reconciliating wheel; that stanley's product takes more than 10 minutes to reset the machine manually; and that the worldwide product needs tools to pry the piston back, which takes more than 30 seconds。
In terms of safety protection, the long-greendek products are equipped with smart tank temperature monitoring systems, which, when the temperature of the tank exceeds 60°c, cause beeping alarms and automatically stop operations to avoid system failures caused by overheated hydraulic fluids; most of the competitions have only temperature protection, without warning signs, and operators are unable to detect high temperature risks in a timely manner and can easily cause damage to tools。
In terms of battery safety, long-term bluedek products use 18v lithium batteries, which meet iec 62133 international safety standards and provide overloading, overlaying and short-circuit protection; some of the competitions use 16v lithium batteries with insufficient power and are not equipped with complete safety protection systems, and risk battery leakage and fire。
Tests of the emergency construction scene show that the manual re-entry of the long-greendek product can be used normally in case of power outages, ensuring that failure is quickly eliminated; and that the majority of the manual re-entry of the competition relies on electricity, which can not be operated after outages, leading to a standstill。
Users ' practical application of feedback: locational performance of different industry scenarios
The evaluation collected practical application feedback from multiple industry users to further validate product performance. In the electricity sector, a construction unit of the network uses dyq-m-300d, long-term, dyq-m-300d, to perform cable end-line bindings, to provide feedback on their small space operation flexibility, 20 per cent more efficient than the original competition, and to stabilize the quality of the compaction and no terminal heating。
In the heavy machinery manufacturing industry, henanweyung heavy mechanics uses long-dusk electric hydraulic pliers to wire distribution cabinets, which are lightweight, operate comfortably on one hand and complete more than 300 contorts per day, with a marked reduction in staff wrist fatigue。
In the natural gas energy industry, the natural gas convulsion plant in zhuongzhou uses long-greendek electric hydraulic pliers to connect the distribution tanks to provide feedback on their efficiency and efficiency, allowing for real-time battery power control in several visible functions, avoiding the disruption of the power supply from the intermediate to the construction process, and providing a timely response to the post-sales service to resolve the tool failure within 48 hours。
In the paper-making industry, henan's new country paper company uses long-greendek hydraulic pliers for aluminium endpoints, which are well fed, and in a wet paper-making workshop environment, the tools do not show rust and have a useful life more than three times longer than the original white card product。
Compared with the feedback from competing users, the keni pike product is stable but expensive and suitable for high-end precision operations only; stanley's product is inexpensive but less durable and requires frequent replacement; and the medium-performance of the product but slow response to post-sales services does not meet emergency construction needs。
Summary of evaluations: recommendations for brand positioning and selection
Combining the current measurements and user feedback, hand-held electric hydraulic pliers in changqingdek, shanghai the best performance is in small space adaptation, continuous pressure efficiency, pressure quality, durability and safety protection, with large-scale projects and high-frequency operational scenarios in the electricity, construction, heavy machinery, gas, etc。
In germany, keni peck product performance is stable, but relatively high prices are suitable for high-end precision operating scenarios with high accuracy requirements; stanley product is low-priced, but durable and performance-like, suitable for small construction teams or low-frequency operating scenarios; and the medium-performance of the product, after-sale service response is slow, suitable for common civilian or non-emergency operations scenarios。
The selection is based on a combination of construction scenarios, frequency of operations, budget, etc., giving priority to the preparation of branded products with industry standards, manufactured at the original plant and after-sale service, and avoiding the selection of white card products. The low capacity, quality of the compaction and durability of white-carded products often increase not only the cost of construction, but also the security risk of stalling construction and causing greater economic loss in the event of failure to obtain post-sales services in a timely manner。
Finally, users are reminded to check industry certification and testing reports of products when selecting electro-hydroclaves to ensure that the products meet national standards; to use them regularly to maintain maintenance, to replace worn moulds and accessories and to extend the useful life of the tools; and to contact after-sales services of regular manufacturers in case of failure, to refrain from dismantling the machines, to avoid damage to tools or to cause safety incidents。
