Lever type buffer device of hydraulic brake and working method

Abstract

The invention relates to the technical field of mechanical braking and clamping, and particularly discloses a hydraulic brake lever type buffering device and a working method.The hydraulic brake lever type buffering device comprises a supporting frame and hydraulic dampers, the supporting frame is installed on a foundation support, the hydraulic brakes are installed on the two sides of the foundation support, and a lever support is rotationally installed in the middle of the supporting frame; the lower portion of the lever support makes contact with a hydraulic brake, and a hydraulic damper is installed on the upper portion of the lever support and controls swinging of the lever support. The hydraulic braking mechanism and the lever type buffering mechanism are ingeniously combined, the clamping force is amplified according to the lever principle, meanwhile, buffering is achieved through the hydraulic damper, the stability and safety of braking clamping are effectively improved, and the technical problems that an existing braking clamping device is insufficient in clamping force and poor in buffering effect are solved. The device is compact in structure, all the components cooperate, and the device is suitable for various mechanical equipment scenes needing stable braking and clamping.

Description

Technical Field

[0001] This invention relates to the field of mechanical braking and clamping technology, specifically to a hydraulic brake lever-type buffer device and its working method. Background Technology

[0002] The on-site demonstration showed that the double-sided shear is used for longitudinal edge trimming of steel plates to achieve the required width for the finished product. The main body consists of several parts, including a fixed shear, a moving shear, a blade changing device, and a waste chute. The moving shear is arranged opposite to the fixed shear; its position is adjusted to meet the edge trimming requirements when cutting steel plates of different widths. The lateral movement distance of the double-sided shear is 2400mm, and the moving speed is 0-100mm / s. Once the required steel plate width is achieved, timely and stable braking is necessary. On-site, the moving shear uses four sets of hydraulic brakes (T40) to ensure that the entire moving shear remains stationary during the shearing process. If the hydraulic brake clamping buffer fails, the fixing bolts will break, resulting in a significant change in the width (exceeding 0.5mm), which will greatly affect the head-to-tail difference of the steel plate.

[0003] In the field of steel rolling machinery, the braking and clamping device is a key component for ensuring the safe operation of the equipment. Existing double-sided shear width-adjusting braking devices have low clamping force transmission efficiency, making it difficult to achieve a large clamping force with a small driving force. This often results in poor buffering performance, frequent breakage of fixing bolts, and loss of width control. This width-adjusting device is also energy-intensive and structurally flawed. Therefore, there is an urgent need for a braking and clamping device and operating method that can effectively amplify the clamping force and has good buffering performance to solve the problem of the mounting bolts of existing hydraulic brakes being prone to breakage under high impact forces. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide a hydraulic brake lever-type buffer device and its working method. The hydraulic brake lever-type buffer clamping device based on the lever principle can be applied to the double-sided shear width adjustment function of medium and thick plates, and promotes the installation type of hydraulic brakes in the same mechanism to achieve enhanced clamping and buffering effect.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a hydraulic brake lever-type buffer device, including a support frame and a hydraulic damper. The support frame is installed on a base support. Hydraulic brakes are installed on both sides of the base support. A lever support is rotatably installed in the middle of the support frame. The lower part of the lever support contacts the hydraulic brake. A hydraulic damper is installed on the upper part of the lever support. The hydraulic damper controls the swing of the lever support.

[0006] Specifically, there are four support frames, with two support frames installed in pairs on both sides of the base support. Each support frame has a vertically elongated movable through hole in the middle.

[0007] Specifically, the lever bracket has an upper bent part and a lower inclined part, and the inclined part is rotatably installed in the movable through hole via a rotating shaft.

[0008] Specifically, the lever support includes lever support one and lever support two. Lever support one and lever support two adopt the same structure and are arranged opposite to each other. The bent part of lever support one is rotatably connected to a hydraulic damper through an ear plate seat and a pin. The hydraulic damper is provided with a damper telescopic rod. The damper telescopic rod is rotatably connected to the bent part of lever support two through an ear plate seat and a pin.

[0009] Specifically, the inclined portions of both lever bracket one and lever bracket two pass through the movable through hole to contact the hydraulic brake, and the outer side of the hydraulic brake is mounted on the base bracket by a mounting plate and bolts.

[0010] Specifically, the base support is provided with a "U"-shaped groove, in which a brake disc is installed, and a hydraulic brake is installed on both sides of the brake disc.

[0011] A method for operating a hydraulic brake lever-type buffer device includes the following steps: S1, lever support one and lever support two form a force-saving lever structure with the rotation axis as the fulcrum, which amplifies and transmits the force of the hydraulic damper and the clamping force of the hydraulic brake, and can provide a buffering effect in both the starting and releasing phases of brake clamping. S2. The clamping force generated by the hydraulic brake pushes lever bracket one and lever bracket two to rotate around the fulcrum of the rotation axis. Due to the force-saving effect of the lever, the hydraulic brake generates an amplified clamping force on the brake disc to achieve braking clamping. S3. At the same time, the hydraulic damper provides damping force during the movement of lever support one and lever support two, buffering the changes in clamping force and making the braking process smooth. S4. When it is necessary to release the brake, the hydraulic brake moves in the opposite direction, lever bracket one and lever bracket two rotate in the opposite direction, and the hydraulic damper plays a buffering role again, so that the brake disc can be smoothly released. The hydraulic damper promptly reduces the impact of the 100Mpa instantaneous pressure on the fixing bolt when the hydraulic brake is started and pressurized.

[0012] The present invention has the following beneficial effects: This invention relates to a hydraulic brake lever-type buffer device and its working method. By cleverly combining a hydraulic braking mechanism with a lever-type buffer mechanism, it amplifies the clamping force using the lever principle, while simultaneously using a hydraulic damper to achieve buffering. This effectively improves the stability and safety of brake clamping, solving the technical problems of insufficient clamping force and poor buffering effect in existing brake clamping devices. The device has a compact structure, with all components working in concert, making it suitable for various mechanical equipment scenarios requiring stable brake clamping.

[0013] The hydraulic brake lever-type buffer device and its working method designed in this invention effectively amplify the clamping force through the force-saving principle of the lever mechanism. Under the same driving force, the clamping force is significantly improved, which meets the braking and clamping requirements of high-load equipment.

[0014] The hydraulic brake lever-type buffer device and its working method designed in this invention, with the introduction of a hydraulic damper, enable the device to have a good buffering effect throughout the entire braking clamping process, avoid damage to the device and the braked components by impact loads, and improve operational safety.

[0015] The hydraulic brake lever-type buffer device and its working method designed in this invention have all components working together, a compact structure, high force transmission efficiency, and low energy consumption, and are suitable for integrated applications of various mechanical equipment. Attached Figure Description

[0016] Figure 1 This is the front view of the lever-type buffer device of the hydraulic brake.

[0017] Figure 2 This is a side view of the lever-type buffer device of the hydraulic brake.

[0018] In the diagram: 1-Hydraulic brake; 2-Support frame; 3-Base support; 4-Lever support one; 5-Lever support two; 6-Hydraulic damper; 7-Brake disc; 8-Modible through hole; 9-Rotating shaft; 10-Damper telescopic rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-2 As shown, a lever-type buffer device for a hydraulic brake is described. By adding buffer clamping devices to both sides of the widened hydraulic brake 1, it fully considers the reality that the original fixing bolts of the hydraulic brake 1 do not meet the strength requirements of the on-site working conditions and frequently break. This lever-based hydraulic brake lever-type buffer clamping device was designed by a certain company based on on-site working conditions. It utilizes the lever principle to clamp and buffer the device, forming a force-saving lever structure that amplifies and transmits the force of the hydraulic damper 6 and the clamping force of the hydraulic brake 1. The hydraulic damper 6 is a bidirectional hydraulic damper, providing buffering during both the initiation and release phases of brake clamping. The installed and used devices have shown good results. The fixing bolts have no longer experienced sudden breakage.

[0021] This hydraulic brake lever-type buffer device is currently installed on both sides of the hydraulic brake for adjusting the width of a medium-thick plate double-sided shear. In terms of structural design, it makes good use of the base support 3 for the installation of the hydraulic brake 1. The upper and lower fixing bolts are attached to both sides of the body of the hydraulic brake 1 in pairs, and the installation is symmetrical to the left and right to enhance the fixing stability of the hydraulic brake. A fixed rotating shaft 9 is machined in the middle to provide a fulcrum for the lever support, forming a force-saving lever structure. The hydraulic damper 6 is installed to timely reduce the impact of the instantaneous pressure of 100Mpa on the fixing bolts when the hydraulic brake 1 is started and pressurized, so as to avoid the occurrence of enlarged flare of the symmetrical hydraulic brake 1, shear stress fatigue at the root of the fixing bolt, and fracture.

[0022] A hydraulic brake lever-type buffer device includes a support frame 2, a lever bracket and a hydraulic damper 6. The support frame 2 is mounted on a base support 3. Hydraulic brakes 1 are mounted on both sides of the base support 3. The lever bracket is rotatably mounted in the middle of the support frame 2. The lower part of the lever bracket contacts the hydraulic brake 1. The hydraulic damper 6 is mounted on the upper part of the lever bracket. The hydraulic damper 6 controls the swing of the lever bracket.

[0023] There are four support frames 2. The support frames 2 are installed in pairs on both sides of the base support 3. Each support frame 2 has a vertical elongated movable through hole 8 in the middle.

[0024] The lever support has an upper bent part and a lower inclined part. The inclined part is rotatably installed in the movable through hole 8 via a rotating shaft 9.

[0025] The lever support includes lever support 4 and lever support 5. Lever support 4 and lever support 5 adopt the same structure and are arranged opposite to each other. The bent part of lever support 4 is rotatably connected to hydraulic damper 6 through ear plate seat and pin. Hydraulic damper 6 is provided with damper telescopic rod 10. The damper telescopic rod 10 is rotatably connected to the bent part of lever support 5 through ear plate seat and pin. Hydraulic damper 6 is connected between lever support 4 and lever support 5 on both sides to provide buffer damping force.

[0026] The inclined parts of lever bracket 1 4 and lever bracket 2 5 both pass through the movable through hole 8 to contact the hydraulic brake 1. The outer side of the hydraulic brake 1 is mounted on the base bracket 3 by a mounting plate and bolts.

[0027] The base support 3 is provided with a "U" shaped groove, and the brake disc 7 is installed in the "U" shaped groove. The hydraulic brake 1 is installed on both sides of the brake disc 7.

[0028] A method for operating a hydraulic brake lever-type buffer device includes the following steps: 1. Lever bracket 4 and lever bracket 5 form a force-saving lever structure with the rotating shaft 9 as the fulcrum, which amplifies and transmits the force of the hydraulic damper 6 and the clamping force of the hydraulic brake 1, and can provide a buffering effect during the starting and releasing phases of brake clamping.

[0029] 2. The clamping force generated by the hydraulic brake 1 pushes the lever support 4 and the lever support 5 to rotate around the fulcrum of the rotating shaft 9. Due to the force-saving effect of the lever, the hydraulic brake 1 generates an amplified clamping force on the brake disc 7, thereby achieving braking clamping.

[0030] 3. At the same time, the hydraulic damper 6 provides damping force during the movement of lever support 4 and lever support 5, buffering the changes in clamping force and making the braking process smooth.

[0031] 4. When it is necessary to release the brake, the hydraulic brake 1 moves in the opposite direction, the lever bracket 1 4 and the lever bracket 2 5 rotate in the opposite direction, and the hydraulic damper 6 plays a buffering role again, so that the brake disc 7 can be smoothly released. The hydraulic damper 6 promptly reduces the impact of the 100 MPa instantaneous pressure on the fixing bolt when the hydraulic brake 1 starts to pressurize.

[0032] An embodiment of the hydraulic brake lever-type buffer device of the present invention has the following specific dimensions: the overall length is 400 mm, and the portion in contact with the hydraulic brake 1 is 200 mm. The connecting and fixing bolts have a diameter of 24 mm and a length of 300 mm, and are installed in pairs. The support frame 2 is made of Q345 material to ensure the overall stability of the device. The support frame 2 is connected to the base support 3, and the lever support 1 4 and lever support 2 5 provide a solid fulcrum to the support frame 2 through the rotating shaft 9. This forms a force-saving lever, with the length of the power arm being twice the length of the resistance arm. The hydraulic damper 6 is a bidirectional hydraulic damper, with both ends connected to the lever support 1 4 and lever support 2 5 on both sides by hinges; the hydraulic brake 1 is fixed to the base support 3 by bolts. The surface of the hydraulic brake 1 that contacts the brake disc 7 is coated with a ceramic-based wear-resistant and anti-slip coating.

[0033] This invention calculates the braking force of the hydraulic brake 1 and finds that a single bolt in the existing brake structure must withstand a force exceeding 30 tons. The instantaneous pressure of 100 MPa during the initial pressurization of the hydraulic brake 1 significantly exceeds its bearing capacity. Therefore, the current brake structure must be modified to reasonably increase the overall system's load-bearing capacity. Taking into account the actual site space and installation structure, a self-designed clamping device, a composite structure combining rigidity and flexibility (lever support mechanism + hydraulic damper 6), was developed. This is key to solving the impact problem, and installation testing was conducted. After more than 10 months of use, the clamping device has proven effective and meets design requirements.

[0034] The application of this hydraulic brake clamping and buffer device ensures the accuracy of the width dimensions of the online double-sided shear, prevents the brake fixing bolts from breaking or failing, and avoids unplanned downtime caused by excessive dimensional deviations in the steel plates. Based on a normal double-sided shear cutting speed and a full-load production plan of 20×2500×10000 steel plates, a 30-minute downtime would result in 41 fewer plates being cut, leading to a loss of 160 tons of steel plates collected and stored.

[0035] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0036] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A lever-type buffer device for a hydraulic brake, characterized in that, It includes a support frame and a hydraulic damper. The support frame is mounted on a base support. Hydraulic brakes are installed on both sides of the base support. A lever support is rotatably mounted in the middle of the support frame. The lower part of the lever support contacts the hydraulic brake. A hydraulic damper is installed on the upper part of the lever support. The hydraulic damper controls the swing of the lever support.

2. The hydraulic brake lever-type buffer device according to claim 1, characterized in that, The support frame is provided in four parts, with two support frames installed in pairs on both sides of the base support. Each support frame has a vertical elongated movable through hole in the middle.

3. The hydraulic brake lever-type buffer device according to claim 2, characterized in that, The lever support has an upper bent part and a lower inclined part, and the inclined part is rotatably installed in the movable through hole via a rotating shaft.

4. The hydraulic brake lever-type buffer device according to claim 3, characterized in that, The lever support includes lever support one and lever support two. Lever support one and lever support two adopt the same structure and are arranged opposite to each other. The bent part of lever support one is rotatably connected to a hydraulic damper through an ear plate seat and a pin. The hydraulic damper is provided with a damper telescopic rod. The damper telescopic rod is rotatably connected to the bent part of lever support two through an ear plate seat and a pin.

5. The hydraulic brake lever-type buffer device according to claim 4, characterized in that, The inclined portions of both lever bracket one and lever bracket two pass through the movable through hole to contact the hydraulic brake, and the outer side of the hydraulic brake is mounted on the base bracket by a mounting plate and bolts.

6. The hydraulic brake lever-type buffer device according to claim 1, characterized in that, The base support is provided with a "U" shaped groove, in which a brake disc is installed, and hydraulic brakes are installed on both sides of the brake disc.

7. The method of operating the hydraulic brake lever-type buffer device according to any one of claims 1-6, characterized in that, Includes the following steps: S1, lever support one and lever support two form a force-saving lever structure with the rotation axis as the fulcrum, which amplifies and transmits the force of the hydraulic damper and the clamping force of the hydraulic brake, and can provide a buffering effect in both the starting and releasing phases of brake clamping. S2. The clamping force generated by the hydraulic brake pushes lever bracket one and lever bracket two to rotate around the fulcrum of the rotation axis. Due to the force-saving effect of the lever, the hydraulic brake generates an amplified clamping force on the brake disc to achieve braking clamping. S3. At the same time, the hydraulic damper provides damping force during the movement of lever support one and lever support two, buffering the changes in clamping force and making the braking process smooth. S4. When it is necessary to release the brake, the hydraulic brake moves in the opposite direction, lever bracket one and lever bracket two rotate in the opposite direction, and the hydraulic damper plays a buffering role again, so that the brake disc can be smoothly released. The hydraulic damper promptly reduces the impact of the 100Mpa instantaneous pressure on the fixing bolt when the hydraulic brake is started and pressurized.

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