Smoke emitted by a speed reducer during operation is truly a headache. What causes this? Here's an analysis: 1. The ambient temperature is too high, exceeding 40℃, causing excessive heat in the speed reducer's intake air and making heat dissipation difficult. Cooling measures should be taken. 2. Damaged or excessively worn bearings cause the stator and rotor to rub against each other. Check for loose bearings and improper assembly of the stator and rotor. 3. Broken bars in the squirrel-cage rotor or loose coil connections in the wound rotor cause excessive current and overheating. Repair or replace copper bar rotors; replace cast aluminum rotors. 4. Incorrect winding connections, such as connecting a star configuration as a delta configuration or vice versa, will cause overheating under rated load. Check and correct these errors. 5. The internal fan of the speed reducer is damaged, installed backwards, or missing. Install it correctly, and repair or replace any damaged fans.

The following are key selection points for screw jack couplings based on various conditions. We hope this introduction will help you better understand this topic. Let's take a closer look: Point 1: High Precision: Rubber damping type, diaphragm type, slit type, bellows type, rigid coupling. Point 2: High Torque: Rubber damping type, diaphragm type, plum blossom type, cross slider type, rigid coupling. Point 3: High Torsional Rigidity: Rubber damping type, diaphragm type, cross joint type, rigid coupling. Point 4: Tolerance Adjustment: Cross slider type. Point 5: Vibration Damping: Rubber damping type, plum blossom type, cross joint type. Point 6: Electrical Insulation: Rubber damping type, plum blossom type, cross slider type. Point 7: High Motor Gain: Rubber damping type. Point 8: High Temperature Sensitivity: With rubber or engineering plastic materials, the maximum temperature should not exceed 120℃. Point 9: Low Axial Reaction Force: Cross slider type…

Screw jacks, also known as lead screw jacks, are widely used in machinery, construction, chemical, medical, and other healthcare industries. They can accurately control and adjust the lifting or pushing height according to a specific program. They can be directly driven by an electric motor or other power source, or manually. The internal structure consists of a worm gear and lead screw nut, using electric drive to achieve the lifting function. Below, we introduce some problems encountered during the use of screw jacks and their solutions to help users quickly troubleshoot. Worm gears wear quickly; worm gears are generally made of tin bronze. During normal operation, screw jacks wear very slowly; some screw jacks can last for more than 10 years. If the wear rate is too fast, consider whether the initial selection was correct, whether it was operating under overload, the material of the worm gear, assembly quality, and the operating environment. Worm bearing damage: When a worm gear bearing malfunctions, even if the gearbox is well-sealed, it is often found that the gear oil inside the screw jack is emulsified, and the bearing rusts and corrodes…

Worm gear screw jacks are a commonly used type of mechanical lifting machine. Over time, noise in worm gear screw jacks is often caused by component malfunctions. Which components of a worm gear screw jack are prone to failure? Let's take a brief look: 1. Wear on the shaft surface, keyway wear, and shaft bending. 2. Wear at the bearing holes and thread failure in the screw holes. 3. Gear wear, mainly caused by tooth surface wear, tooth breakage, or wear on the gear shaft hole or keyway.

Screw jacks primarily function by driving a worm gear to rotate, thereby moving the screw up and down to achieve pushing, pulling, or lifting effects. There are two main types of screw jack rotation: Type 1: The screw rotates, and the nut moves. This type of transmission requires a guide device to restrict the rotation of the nut. Its advantages include a compact structure and good screw rigidity. It is suitable for applications with large strokes. Type 2: The nut is fixed, and the screw rotates and moves. In this type, the nut itself provides support, eliminating the additional axial movement that might occur with the screw bearings. It has a simpler structure and can achieve higher transmission accuracy. However, its axial dimension should not be too long, otherwise the rigidity will be poor. Therefore, it is only suitable for applications with small strokes.

Today we'll analyze three key points to consider during the break-in period of a newly purchased worm gear screw jack. This is crucial for its long-term use. Here's a detailed explanation: Point 1: Choose the appropriate lubricating oil. For example, use light-load gear oil for 11KW jacks and medium-load gear oil for larger jacks. Regularly check the oil level and quality, and ensure proper sealing. Add grease periodically, paying attention to the rotation direction of different oil pump models; clockwise rotation is correct. Point 2: Keep the motor clean and secure components to prevent vibration from causing parts to fall off. Point 3: After the break-in period, change the oil promptly and regularly inspect and maintain the worm gear screw jack.

With the mechanization transformation of various industries, transmission machinery has gradually been widely used, and screw jacks are one such type of transmission machinery that has benefited from this. Below, we will look at the functions and parameters of screw jacks: 1. Linear motion unit speed up to 16 inches/second (4.88 meters/second) 2. Stroke range: 2 – 22 feet (0.61 – 67.66 meters) 3. The above screw jack motion units are driven by ball screws or belts, with linear bearings using prismatic or ball bearing guideways. 4. Linear motion units can be equipped with stepper motors, servo motors, AC motors, or DC motors and complete control systems. 5. Load range: 80 – 12,500 pounds (356 – 55,625 N) 6. Designed for packaging, assembly, and material handling applications because screw jack motion units are modular, modular, and self-supporting…

The installation and precautions for the fixed connecting parts of the screw jack are as follows: I. Assembly of Threaded Connections 1. Threaded connections must have appropriate tightening force. Important threaded connections bearing dynamic loads generally have preload requirements. During assembly, they must be tightened according to these requirements. Ordinary threaded connections without preload requirements should also have appropriate tightening force. 2. For grouped threaded connections, the bolts must be tightened in a specific order, gradually and in stages. This helps ensure uniform contact and good fit between the threads, and consistent load-bearing capacity between the bolts. 3. To prevent bolts from loosening due to vibration, threaded connections must have appropriate locking measures. 1) Add spring washers. 2) Lock with double nuts. 3) Lock with anti-reverse washers. 4) Secure with wire. 5) Lock with safety washers. 6) Lock with cotter pins. II. Assembly of Key-Pin Connections 1. In a key-pin connection, the working surface of the key is two…

When selecting a screw jack, it is crucial to ensure the screw shaft speed is matched to the load. Furthermore, the maximum allowable load, allowable external load, and allowable screw shaft rotation speed of the screw jack must be verified. Exceeding these specifications will severely damage the entire lifting equipment. For worm gear screw jacks, whether under static, dynamic, or impact loads, the maximum allowable load must not be exceeded. A jack with sufficient capacity must be selected based on a safety factor, operating stroke, and screw stability calibration. During operation, the surface temperature of the screw jack's reduction gear should be controlled within the range of -15°C to 80°C, ensuring the surface temperature of the moving nut also falls within this range. The load capacity of the screw jack must be considered. When selecting a screw jack, whether under static, dynamic, or impact loads, the maximum allowable load must not be exceeded. A jack with sufficient capacity must be selected based on a safety factor, operating stroke, and screw stability calibration…

Worm gear screw jacks are increasingly used in various industries due to their affordability, ease of installation, and flexible operation. Screw jacks utilize worm gear drives, which have excellent self-locking properties, maintaining load even without a braking device. The worm gear drive rotates the screw, and the worm gear, with its internal trapezoidal thread, works in conjunction with the screw. The rotation of the worm gear drives the screw to move axially, achieving both deceleration and lifting functions. Screw jacks can be combined into one or more units to form a working platform, with a single motor or handwheel driving other components to achieve synchronized and stable lifting operations. It is important to note that when selecting a drive system for screw jacks, whether it's two, four, or multiple units working in tandem, we recommend using a single motor whenever possible. This is because different motors have speed differences per minute, making it difficult to achieve synchronized and stable operation if multiple motors are used.