Deformed steel bar beating plate type brake
By designing rebar clap brakes, the reduction control of multiple finished steels is achieved by using friction force, the problems of low utilization rate and poor braking effect of existing cold bed devices are solved, and efficient and accurate braking effect is achieved. Improved yield rate.
Patent Information
- Application Number
- CN202421595450.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing cold bed equipment has problems such as low utilization rate, slowing rolling speed, limited reduction range and inability to achieve multiple controls during the transmission process of finished steel, which seriously restricts the improvement of the yield rate.
Design a rebar clamp brake to achieve the reduction control of multiple finished steels through friction force, and use the cylinder drive lever to push the clamp brake block to contact the finished steel, generate friction force to achieve speed reduction, and adjust the cylinder pressure. and the action time to control the contact surface pressure and glide distance.
Accurate control of multiple rebars is achieved, the utilization rate of cold beds is improved, the phenomenon of bending steel is avoided, the braking effect is enhanced, the adaptability is wide, the maintenance cost is low, and the service life is long.
Smart Images
Figure CN222511223U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a threaded steel clapper type brake. Background Art
[0002] The process flow of the bar production line: steel billet acceptance → heating → rolling → multiple-length shearing → cooling → shearing → inspection → packaging → measurement → storage, among which the multiple-length shearing process is directly related to the yield rate. The more times each steel bar is sheared, the worse the yield rate will be. The fewer times the shearing is, the more it will be limited by the length of the cooling bed. Under the existing restrictions on the length of the cooling bed and the length of the steel billet, the fewer times each steel bar is sheared, the higher the overall yield rate will be. This requires us to turn our research direction to how to improve the utilization rate of the cooling bed to improve the yield rate of the product. To improve the effective utilization rate of the cooling bed, we must first understand the working principle of the cooling bed. The upper device of the cooling bed consists of a transmission roller, a movable group plate, a fixed skirt plate, a brake skirt plate, and a steel moving bracket. After the finished steel is sheared by the double-length shear, the finished steel is transmitted by the transmission roller. During the transmission process, the movable skirt plate moves the finished steel to slide into the fixed skirt plate chute. The movable skirt plate lifts the finished steel upward and pushes it from the fixed skirt plate to the top and then slides to the brake skirt plate. During the whole process, the finished steel always maintains a deceleration motion under the action of inertia. The positioning of the finished steel on the cooling bed is completely controlled by the skirt plate action time. During the whole process, due to the inconsistent contact between the weight of the finished steel and the roller, the position of the cooling bed is different under the same control action, and sometimes the difference is very large. In order to ensure that all parts are placed on the cooling bed, the double-length length must be sacrificed to ensure it, which results in the utilization rate of the cooling bed can only reach about 80%. This seriously restricts the improvement of the yield rate. At present, the most commonly used device in China is to set up a bed pinch roller to control the bed speed before the finished steel enters the cooling bed process. When the finished steel enters the cooling bed transmission roller, the bed additional roller damps the finished steel to reduce the transmission speed of the finished steel and ensure that the bed speed of each steel is within a certain speed range, thereby improving the effective utilization rate of the cooling bed. This device has certain limitations in practical application. First, it reduces the rolling speed of the entire production line. Since it is an online deceleration control of the same production line, it must be realized on the same transmission center line, which limits the control of the next steel after each control is completed, slowing down the entire rolling speed. It is not suitable for high-speed and fast-paced rolling production. Second, the deceleration range is limited. Since it is a deceleration control of finished steel, local damping deceleration is adopted. If the deceleration amplitude is too large, it will cause the accumulation of the finished steel at the rear part, causing a steel jam accident. Third, multiple control cannot be achieved. The pinch roller can only achieve deceleration control of a single steel, and cannot achieve deceleration control of multiple finished steels. In short, pinch rollers are only suitable for single, large-section, medium and low-speed braking conditions. Summary of the invention
[0003] The utility model aims to provide a threaded steel clapper type brake which can utilize friction force to realize the deceleration control of multiple finished steel products.
[0004] The technical solution adopted by the utility model is a threaded steel clapper-type brake, comprising a clapper brake block, a leveling spring, a driving lever, and a brake cylinder. The brake cylinder is hinged to a skirt protection platform through a pin shaft, the piston rod end of the brake cylinder is hinged to the tail end of the driving lever, the middle part of the driving lever is hinged to the front end of the skirt protection platform, the front end of the driving lever is bent and hinged to a clapper brake block, and the leveling spring is arranged between the back side of the clapper brake block and the front part of the driving lever; a skirt roller supporting wall panel is arranged under the skirt protection platform, and a skirt roller driven by a roller motor is arranged on the wall panel.
[0005] When working, the cylinder moves the torque through the driving lever to push the brake block downward, squeezing the finished steel in motion to produce friction, which drives the finished steel to produce a deceleration motion under the action of friction, thus achieving the deceleration of the finished steel. By adjusting the cylinder pressure, the contact surface pressure is adjusted, and then the friction is adjusted. At the same time, the finished steel is controlled and fixed in length by controlling the action time, so that the distance the finished threaded steel moves under the action of inertia can be controlled.
[0006] The design principle of the utility model: the law of kinetic energy conversion, using external force to control the inertia of the threaded steel bar, rationally using the friction force, and controlling the inertial sliding distance by controlling the action time. Through the optimization of the equipment mechanism, the external friction force is realized, and additional functions are added on the basis of the original equipment. The control is accurate and reliable, and the manufacturing is simple and convenient. The design is added on the basis of the original transmission skirt board equipment. The position is arranged above the skirt board, which does not occupy space. It can be put into use quickly and can also be independently withdrawn from the entire finishing system. The mechanism is simple, and the structure is realized through a simple connecting rod mechanism. The function is direct, effective and fast. The maintenance cost is low and the service life is long. Due to the structural advantages of the mechanism, the maintenance is also relatively simple, and only the vulnerable friction parts need to be replaced. Energy and environmental protection. The driving energy of the entire mechanism is compressed air, the energy is clean, and no pollution and waste will be generated during use. Easy to realize automatic control. The entire mechanism only needs to be equipped with a monitoring signal to realize the automatic control of the mechanism. The innovation point of the utility model: the inertial braking position is at the tail to ensure the straightness of the entire threaded steel bar. Because it is a tail brake, the front half of the rebar is always in an extended state, and there will be no bending of the steel due to braking. Multiple-steel braking. The entire braking process is braked in batches, and a single batch can be multiple rebars, and braking is achieved at the same time. The braking effect is more direct. The traditional bed deceleration equipment is achieved through the transmission form of the pressure roller, while this invention is a direct effect, and the effect is more direct and effective. Parameter adjustability. According to the law of kinetic energy, the size of the friction force can be adjusted by the pressure of the compressed air, and the length of the action time can be achieved by adjusting the action time of the detection signal. The mechanism has a wide range of adaptability. In the product sequence of rebar production, one set of mechanisms can fully realize the production needs of all products. High movement efficiency: The main movement of the baffle adopts cylinder movement, the cylinder moves faster, consumes less energy, has strong environmental adaptability, and the two-point support movement ensures the level and stability of the movement. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the release state of the utility model;
[0008] Figure 2 It is a schematic diagram of the working state of the utility model. DETAILED DESCRIPTION
[0009] A threaded steel clapper brake comprises a clapper brake block 1, a leveling spring 2, a driving lever 3 and a brake cylinder 5. The brake cylinder 5 is hinged to a skirt protection platform 7 through a pin shaft 6. The piston rod end of the brake cylinder 5 is hinged to the tail end of the driving lever 3. The middle part of the driving lever 3 is hinged to the front end of the skirt protection platform 7. The front end of the driving lever 3 is bent and hinged to a clapper brake block 1. The leveling spring 2 is arranged between the back side of the clapper brake block 1 and the front part of the driving lever. A skirt roller supporting wall panel 10 is arranged below the skirt protection platform 7, and a skirt roller 9 driven by a roller motor 8 is arranged on the wall panel.
[0010] When working, the cylinder moves the torque through the driving lever to push the brake block downward, squeezing the finished steel in motion to produce friction, which drives the finished steel to produce a deceleration motion under the action of friction, thus achieving the deceleration of the finished steel. By adjusting the cylinder pressure, the contact surface pressure is adjusted, and then the friction is adjusted. At the same time, the finished steel is controlled and fixed in length by controlling the action time, so that the distance the finished threaded steel moves under the action of inertia can be controlled.
[0011] The specific action logic is as follows Figure 1 , 2 As shown, after the threaded steel is sheared and segmented by the action of the fixed-length shear, it is transferred and transported by the skirt roller 9. At a certain position during transportation, the movable skirt 11 is actuated by the skirt driving hydraulic cylinder 15, and moves downward to a height below the transmission plane of the skirt roller. Under the action of gravity, the threaded steel rolls down along the roller slope and slides to the bearing surface of the movable skirt 11, and slides on the plane. When it slides to a certain position, a motion signal is given to the skirt. The movable skirt 11 is pushed upward by the driving hydraulic cylinder 15. When the height is higher than a certain position of the brake skirt 13, the threaded steel is The steel rolls down again under the action of gravity, and rolls from the movable skirt plate 11 to the brake skirt plate 13. At this time, a signal is given, and the brake cylinder 5 is actuated, so that the driving lever 3 moves around the supporting point 4, and drives the clapper brake block 1 downward. The brake block and the rebar produce friction, brake the moving rebar, and slow down the rebar. When the speed drops to a certain value, the clapper brake block 1 moves upward on the driving lever 3 driven by the brake cylinder 3, and the rebar slides a certain distance on the brake skirt plate 13 and then stops on the brake skirt plate. The rebar is detached and enters the subsequent process.
[0012] The sliding distance on the brake skirt is achieved by controlling the brake cylinder 5, and the contact time between the clapper brake block 1 and the rebar determines the sliding distance of the rebar.
Claims
1. A threaded steel clapper brake, comprising a clapper brake block, a leveling spring, a driving lever, and a brake cylinder, characterized in that: The brake cylinder is hinged to a skirt board protection platform through a pin shaft, the piston rod end of the brake cylinder is hinged to the tail end of a driving lever, the middle part of the driving lever is hinged to the front end of the skirt board protection platform, the front end of the driving lever is bent and hinged to a clapper brake block, and the leveling spring is arranged between the back side of the clapper brake block and the front part of the driving lever; a skirt board roller supporting wall panel is arranged under the skirt board protection platform, and a skirt board roller driven by a roller motor is arranged on the wall panel.