A brake system for a screw press with high-efficiency heat dissipation

Abstract

The present application relates to a brake system for a screw press with efficient heat dissipation, belonging to the field of flywheel braking of presses. It includes a first cylinder body arranged on a frame; a piston head, which is hermetically and slidably connected to the first cylinder body, and the piston head can slide towards the flywheel. A first sleeve is arranged on the side of the piston head close to the flywheel, and the first sleeve is provided with an exhaust through hole; a piston rod, the end of the piston rod far from the flywheel is hermetically and slidably arranged in the first sleeve, the piston rod can move towards or away from the flywheel, and the end of the piston rod close to the flywheel can abut against the flywheel, and the piston rod is provided with an exhaust passage; a first elastic member, as the piston head moves towards the flywheel, the piston head abuts against the piston rod, and the piston rod abuts against the flywheel, and the gas in the first cylinder body is sprayed to the abutting position between the flywheel and the piston rod through the exhaust passage; a pressurizing pipe, which is used to pressurize the first cylinder body; a pressure relief component, which is used to reduce the air pressure in the first cylinder body. The present application reduces the probability of heat decay of the friction plate caused by frictional heat generation.

Description

Technical Field

[0001] The present application relates to the field of flywheel braking of presses, and in particular to a brake system for a screw press with efficient heat dissipation. Background Art

[0002] Heavy screw presses are widely used in precision forging processes such as die forging, trimming, and straightening, and play an important role in fields such as aerospace, shipbuilding, and military heavy vehicles. Common screw presses mainly consist of a frame, a motor, a screw rod, a nut, a flywheel, and a slider. During operation, the motor drives the flywheel and the screw rod to rotate through gears, and the screw rod drives the nut and the slider to slide downward along the frame, thereby realizing the forging of workpieces.

[0003] Components such as the nut, slider, upper die, screw rod, and flywheel of a heavy screw press have a large self-weight and a large inertia during movement. Relying solely on the motor for braking will cause a large impact on the motor, power grid, and transmission structure. Therefore, a separate brake system is required. During braking in the operation process, the friction plate of the brake system is in close contact with the flywheel and rubs violently. After the flywheel stops rotating, the friction plate continues to hold the flywheel to prevent the vehicle from slipping.

[0004] In view of the above related technologies, during braking, a large amount of frictional heat is accumulated after the friction plate of the brake system rubs violently with the flywheel. The heated friction plate is prone to reduce the braking force due to heat fade, and even lose the braking effect. Summary of the Invention

[0005] In order to reduce the probability of heat fade of the friction plate caused by frictional heat, the present application provides a brake system for a screw press with efficient heat dissipation.

[0006] The brake system for a screw press with efficient heat dissipation provided by the present application adopts the following technical solutions:

[0007] A brake system for a screw press with efficient heat dissipation includes a first cylinder body, which is arranged on one side of the flywheel corresponding to the frame of the press;

[0008] A piston head is hermetically and slidably connected to the first cylinder body. The piston head can slide towards the flywheel. A first sleeve is arranged on the side of the piston head close to the flywheel, and the first sleeve is provided with an exhaust through hole;

[0009] A piston rod is arranged in the first cylinder body. The end of the piston rod away from the flywheel is hermetically and slidably located in the first sleeve. The piston rod can move towards or away from the flywheel. The end of the piston rod close to the flywheel extends out of the first cylinder body and can abut against the flywheel. The piston rod is provided with an exhaust passage;

[0010] A first elastic member is connected to the piston head and can drive the piston head to slide towards the flywheel. As the piston head moves towards the flywheel, the piston head abuts against the piston rod, the piston rod abuts against the flywheel, and the exhaust through-hole communicates with the exhaust passage. The gas in the first cylinder is sprayed to the abutting position between the flywheel and the piston rod through the exhaust passage;

[0011] A pressurizing pipe is communicated with the first cylinder and is used for pressurizing the first cylinder to drive the piston head to move away from the flywheel;

[0012] A pressure relief assembly is arranged in the first cylinder and is used for reducing the air pressure in the first cylinder.

[0013] By adopting the above scheme, when the press is working normally, the first cylinder is filled with pressurized gas on the side where the piston head is close to the flywheel. The pressure of the pressurized gas on the piston head is greater than the pressure of the first elastic member on the piston head. At this time, the piston rod does not abut against the piston head nor against the flywheel, and the flywheel rotates freely. When it is necessary to brake the screw press, the pressure relief assembly is opened. The pressure of the pressurized gas in the first cylinder on the piston head is less than the pressure of the first elastic member on the piston head. The piston head tends to move towards the flywheel under the action of the first elastic member. The piston head pushes the piston rod to abut against the flywheel, and the flywheel decelerates and stops rotating under the friction of the piston rod. When the piston head abuts against the piston rod, the exhaust through-hole communicates with the exhaust passage, and the gas in the first cylinder is sprayed to the abutting position between the flywheel and the piston rod through the exhaust passage. The sprayed gas reduces the temperature of the flywheel and the piston rod, reduces the probability of thermal recession at the abutting position caused by frictional heat generation, and improves the braking effect and service life of the equipment; during this process, the air pressure in the first cylinder further decreases, the role of the first elastic member is further exerted, and the braking force of the piston rod is further increased, thereby making the braking process relatively smooth and reducing the probability that some components of the equipment bear excessive torque due to sudden braking, and improving the service life of the components. In addition, after the first cylinder is depressurized, the piston head and the piston rod always maintain the braking state on the flywheel under the action of the first elastic member, without the need for additional energy maintenance and circuit control, reducing the probability that the piston rod and the flywheel separate after braking due to accidental failures, and improving the stability of the braking system.

[0014] Preferably, the pressure relief assembly includes a pressure relief valve, and the pressure relief valve is communicated with the first cylinder.

[0015] By adopting the above scheme, when braking is required, the pressure relief valve is opened, and part of the pressurized gas in the first cylinder is discharged by the pressure relief valve, so that the first elastic member plays a main pushing role on the piston head, thereby realizing the start of the braking process.

[0016] Preferably, an air bag is communicated with one end of the pressure relief valve away from the first cylinder.

[0017] By adopting the above solution, the pressure relief valve discharges part of the pressurized gas in the first cylinder block into the air receiver, increasing the air pressure in the air receiver and enabling the first elastic member in the first cylinder block to push the piston head towards the piston rod. At this time, the air pressures in the first cylinder block and the air receiver are still greater than the atmospheric pressure. During the process of the exhaust passage of the piston rod jetting air towards the flywheel, the air receiver and the first cylinder block jointly supply gas to the exhaust passage, reasonably utilizing the gas discharged during pressure relief, increasing the time for the exhaust passage to jet gas, and enhancing the cooling effect on the piston rod and the flywheel.

[0018] Preferably, a brake pad is provided at one end of the piston rod close to the flywheel. The brake pad can abut against the flywheel, and the exhaust passage extends to the position of the brake pad.

[0019] By adopting the above solution, the brake pad increases the friction force of the piston rod on the flywheel, improves the braking effect of the equipment, and reduces the wear of the piston rod.

[0020] Preferably, a diversion groove is formed on the surface of the brake pad on the side close to the flywheel. The diversion groove communicates with the exhaust passage.

[0021] By adopting the above solution, the diversion groove facilitates the diffusion of the airflow ejected from the exhaust passage, increases the contact area and contact time between the airflow and the flywheel and between the airflow and the brake pad, and enhances the cooling effect on the brake pad and the flywheel.

[0022] Preferably, the first sleeve is provided with a slide valve hole and a pressurizing hole. The pressurizing hole communicates with the slide valve hole and the inside of the first cylinder block. One end of the slide valve hole communicates with the exhaust through hole, and the other end of the slide valve hole communicates with the pressurizing pipe. A valve core is hermetically and slidably connected to the first sleeve at the position corresponding to the slide valve hole. The valve core slides along the length direction of the slide valve hole. The valve core is connected with a slide valve spring. In the natural state of the slide valve spring, the valve core isolates the pressurizing pipe and the slide valve hole;

[0023] When the pressurizing pipe conveys pressurized gas, the valve core isolates the exhaust through hole and the exhaust passage, and the pressurizing hole communicates with the pressurizing pipe through the slide valve hole.

[0024] By adopting the above solution, when the press is working normally, the first cylinder is filled with pressurized gas and the valve core is located at the position of the pressurizing pipe. When the press brakes are completed, the air pressures in the first cylinder and the air bag are equal to the atmospheric pressure. At this time, it is necessary to refill the first cylinder with pressurized gas. First, close the pressure relief valve of the pressure relief component, and then use the pressurizing pipe to convey pressurized gas to the first cylinder. The pressurized gas pushes the valve core to overcome the elastic force of the slide valve spring, and the valve core moves to the position of the exhaust through hole. The valve core isolates the exhaust through hole and the exhaust passage, reducing the probability that the pressurized gas conveyed by the pressurizing pipe to the first cylinder overflows from the exhaust passage. The pressurizing hole is communicated with the pressurizing pipe through the slide valve hole. As the air pressure in the first cylinder increases, the pressurized gas pushes the piston head to move away from the flywheel. The piston head separates from the piston rod, the exhaust through hole is disconnected from the exhaust passage, and the piston rod also releases the braking effect on the flywheel. Then stop conveying pressurized gas to the pressurizing pipe. The valve core moves to the position of the pressurizing pipe under the action of the slide valve spring. The valve core isolates the pressurizing pipe and the slide valve hole, and the braking system returns to the initial state.

[0025] Preferably, the piston rod is provided with a second elastic member, and the second elastic member applies a force to the piston rod away from the flywheel.

[0026] By adopting the above solution, when the piston head separates from the piston rod, the piston rod moves away from the flywheel under the action of the second elastic member, and the piston rod returns to the initial state where neither end abuts against the piston head nor against the piston rod.

[0027] Preferably, the first cylinder is provided with an adjusting bolt, and the adjusting bolt abuts against the first elastic member. The adjusting bolt is used to adjust the force of the first elastic member on the piston head.

[0028] By adopting the above solution, according to the required braking force and the on-site air source pressure, the thrust of the first elastic member on the piston head can be flexibly adjusted, thereby obtaining a reliable braking force and appropriate braking sensitivity.

[0029] In summary, the present application has the following beneficial effects:

[0030] 1. During pressure relief braking, the gas in the first cylinder is sprayed through the exhaust passage to the abutting position between the flywheel and the piston rod, reducing the temperature of the flywheel and the piston rod, reducing the probability of thermal recession at the abutting position caused by frictional heat generation, and improving the braking effect and service life of the equipment;

[0031] 2. During braking, the air pressure in the first cylinder gradually decreases, the role of the first elastic member is further exerted, and the force of the piston rod for braking gradually increases, thereby making the braking process relatively smooth and reducing the probability that some parts of the equipment bear excessive torque due to sudden braking, and improving the service life of the parts;

[0032] 3. After the braking system enters the braking state, the piston head and the piston rod always maintain the braking state of the flywheel under the action of the first elastic member, without the need for additional energy maintenance and circuit control, reducing the probability of the piston rod separating from the flywheel after braking due to accidental failures and improving the stability of the braking system. Brief Description of the Drawings

[0033] Figure 1 is an installation schematic diagram of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application;

[0034] Figure 2 is a structural schematic diagram of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application;

[0035] Figure 3 is a sectional view of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application, highlighting the first elastic member;

[0036] Figure 4 is a sectional view of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application, highlighting the slide valve hole;

[0037] Figure 5 is a structural schematic diagram of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application, highlighting the brake pads;

[0038] Figure 6 is a structural schematic diagram of a high-efficiency heat dissipation screw press braking system according to an embodiment of the present application, highlighting the adjusting bolt.

[0039] Description of the Reference Numerals: 1, mounting seat; 11, pull rod; 2, first cylinder block; 3, piston head; 31, first sealing ring; 4, first sleeve; 41, exhaust through hole; 42, slide valve hole; 43, pressurizing hole; 44, valve core; 45, slide valve spring; 5, second sleeve; 6, piston rod; 61, second sealing ring; 62, exhaust passage; 63, second elastic member; 64, brake pads; 641, flow guiding groove; 7, pressurizing pipe; 71, pressurizing valve; 8, second cylinder block; 81, guiding column; 82, first elastic member; 83, adjusting bolt; 9, pressure relief assembly; 91, air bag; 92, pressure relief pipe; 93, pressure relief valve. Detailed Description of the Embodiment

[0040] The following will further describe the present application in detail Figure 1-6 with reference to the accompanying drawings.

[0041] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] The embodiment of this application discloses a brake system for a screw press with efficient heat dissipation, which is mainly used to reduce the probability of heat fade of friction plates caused by frictional heat generation. For this purpose, the following main ideas are adopted in this application:

[0044] Refer to Figure 1 and Figure 2 , a brake system for a screw press with efficient heat dissipation, includes two mounting seats 1 fixedly connected to the press frame. The two mounting seats 1 are arranged on both sides of the frame corresponding to the circumferential direction of the flywheel. Each of the two mounting seats 1 is provided with a first cylinder body 2. The axial direction of the first cylinder body 2 is perpendicular to the axial direction of the flywheel, and the axial direction of the first cylinder body 2 intersects with the axial direction of the flywheel.

[0045] Refer to Figure 3 and Figure 4, a piston head 3 is slidably sealed within the first cylinder block 2, and the piston head 3 slides along the length direction of the first cylinder block 2. A first sleeve 4 is fixedly connected to the side of the piston head 3 near the flywheel. An exhaust through-hole 41 is provided at a position of the first sleeve 4 near the piston head 3. A piston rod 6 is slidably sealed within the first sleeve 4. The piston rod 6 can move towards or away from the flywheel. One end of the piston rod 6 near the flywheel extends out of the first cylinder block 2 and can abut against the flywheel. An exhaust passage 62 is provided in the piston rod 6. The exhaust passage 62 is arranged along the length direction of the piston rod 6. One end of the exhaust passage 62 near the piston head 3 is located on the side wall of the piston rod 6, and the other end of the piston rod 6 away from the piston head 3 faces the abutting position between the piston rod 6 and the flywheel. A second elastic member 63 is sleeved on the piston rod 6. One end of the second elastic member 63 away from the flywheel abuts against the first cylinder block 2, and the other end of the second elastic member 63 near the flywheel is connected to the piston rod 6. The second elastic member 63 applies a force to the piston rod 6 away from the flywheel. The second elastic member 63 can be a spring.

[0046] Referring to Figure 3 and Figure 4 , a second cylinder block 8 is connected to the end of the first cylinder block 2 away from the flywheel. The second cylinder block 8 is arranged along the axis direction of the first cylinder block 2. A first elastic member 82 is arranged within the second cylinder block 8. The first elastic member 82 can be a spring or a disc spring. One end of the first elastic member 82 near the flywheel abuts against the side of the piston head 3 away from the flywheel. The first elastic member 82 can drive the piston head 3 to slide towards the flywheel. As the piston head 3 moves towards the flywheel, the piston head 3 abuts against the piston rod 6, the piston rod 6 abuts against the flywheel, the exhaust through-hole 41 communicates with the exhaust passage 62, and the gas in the first cylinder block 2 is sprayed to the abutting position between the flywheel and the piston rod 6 through the exhaust passage 62.

[0047] Referring to Figure 3 and Figure 4 , a pressure pipe 7 is connected to the first cylinder block 2. A pressure valve 71 is provided on the pressure pipe 7. The pressure pipe 7 is used to pressurize the first cylinder block 2 to drive the piston head 3 to move away from the flywheel. A pressure relief assembly 9 is further provided on the first cylinder block 2. The pressure relief assembly 9 is used to reduce the air pressure within the first cylinder block 2.

[0048] The following effects are achieved: When the press is working normally, the pressure gas is filled on the side of the piston head 3 corresponding to the first cylinder block 2 close to the flywheel. The pressure of the pressure gas on the piston head 3 is greater than the pressure of the first elastic member 82 on the piston head 3. At this time, the piston rod 6 does not abut against the piston head 3 nor against the flywheel, and the flywheel rotates freely. When it is necessary to brake the screw press, the pressure relief assembly 9 is opened. The pressure of the pressure gas in the first cylinder block 2 on the piston head 3 is less than the pressure of the first elastic member 82 on the piston head 3. The piston head 3 tends to move towards the flywheel under the action of the first elastic member 82. The piston head 3 pushes the piston rod 6 to abut against the flywheel. The flywheel decelerates and stops rotating under the friction of the piston rod 6. When the piston head 3 abuts against the piston rod 6, the exhaust through-hole 41 communicates with the exhaust passage 62. The gas in the first cylinder block 2 is sprayed to the abutting position of the flywheel and the piston rod 6 through the exhaust passage 62. The sprayed gas reduces the temperature of the flywheel and the piston rod 6, reduces the probability of thermal recession occurring at the abutting position caused by frictional heat generation, and improves the braking effect and service life of the equipment; in this process, the air pressure in the first cylinder block 2 further decreases, the role of the first elastic member 82 is further exerted, the braking force of the piston rod 6 further increases, thereby making the braking process relatively smooth and reducing the probability that some parts of the equipment bear excessive torque due to sudden braking, and improving the service life of the parts. In addition, after the first cylinder block 2 is depressurized, the piston head 3 and the piston rod 6 always maintain the braking state on the flywheel under the action of the first elastic member 82, without the need for additional energy maintenance and circuit control, reducing the probability that the piston rod 6 separates from the flywheel after braking due to accidental failures, and improving the stability of the braking system.

[0049] Referring to Figure 3 and Figure 4 , as a further example under this embodiment, a first sealing ring 31 is embedded on the circumferential surface of the piston head 3, and the first sealing ring 31 abuts against the inner wall of the first cylinder block 2. The first sealing ring 31 reduces the probability that the pressure gas in the first cylinder block 2 leaks into the second cylinder block 8. A second sealing ring 61 is embedded at a position on the circumferential surface of the piston rod 6 close to the piston head 3, and the second sealing ring 61 abuts against the side wall of the first sleeve 4. The second sealing ring 61 reduces the probability that the pressure gas in the first cylinder block 2 enters the gap between the piston head 3 and the piston rod 6, and reduces the probability that the pressure gas acts on the end face of the piston rod 6 and directly pushes the piston rod 6 towards the flywheel.

[0050] Referring to Figure 1 and Figure 2 , as a further example under this embodiment, two mounting seats 1 are commonly fixedly connected with a pull rod 11, and both ends of the pull rod 11 are respectively arranged at one end of each mounting seat 1 away from the machine frame. During braking, the reaction force of the piston rod 6 is transmitted to the mounting seat 1 through the first elastic member 82, and the pull rod 11 reduces the probability that one end of the two mounting seats 1 away from the machine frame is skewed.

[0051] In another embodiment of the present application, a further detailed description of a pressure relief component 9 is provided:

[0052] Referring to Figure 3 and Figure 4 , the pressure relief component 9 includes a pressure relief pipe 92 which is connected to the first cylinder block 2. One end of the pressure relief pipe 92 away from the first cylinder block 2 is connected to an air bag 91, and the air bag 91 is fixedly connected to the frame of the press. A pressure relief valve 93 is provided in the middle of the pressure relief pipe 92, and the pressure relief valve 93 can be an electromagnetic valve. When braking is required, the pressure relief valve 93 is opened, and the pressure relief valve 93 discharges part of the pressurized gas in the first cylinder block 2 into the air bag 91, increasing the air pressure in the air bag 91 and enabling the first elastic member 82 in the first cylinder block 2 to push the piston head 3 towards the piston rod 6. At this time, the air pressures in the first cylinder block 2 and the air bag 91 are still greater than the atmospheric pressure. During the process of the exhaust passage 62 of the piston rod 6 jetting gas towards the flywheel, the air bag 91 and the first cylinder block 2 jointly supply gas to the exhaust passage 62, rationally utilizing the gas discharged during pressure relief, increasing the time for the exhaust passage 62 to jet gas, and enhancing the cooling effect on the piston rod 6 and the flywheel.

[0053] To improve the braking effect of the equipment, a brake pad 64 is provided, and a detailed description is given in another embodiment of the present application:

[0054] Referring to Figure 5 , the brake pad 64 is fixedly connected to one end of the piston rod 6 close to the flywheel. The brake pad 64 can abut against the circumferential surface of the flywheel. A flow guiding groove 641 is formed on the surface of the brake pad 64 close to the flywheel, and the flow guiding groove 641 is connected to the exhaust passage 62. The brake pad 64 increases the frictional force of the piston rod 6 on the flywheel, improving the braking effect of the equipment. The flow guiding groove 641 facilitates the diffusion of the airflow ejected from the exhaust passage 62, increasing the contact area and contact time between the airflow and the flywheel and between the airflow and the brake pad 64, and enhancing the cooling effect on the brake pad 64 and the flywheel.

[0055] To restore the braking system to its initial state, a slide valve hole 42 is provided, and a detailed description is given in another embodiment of the present application:

[0056] Referring to Figure 3 and Figure 4, the spool hole 42 is formed in the first sleeve 4. The spool hole 42 is arranged along the length direction of the first sleeve 4. A pressure hole 43 is formed in the first sleeve 4 at the middle position corresponding to the spool hole 42. The pressure hole 43 communicates with the spool hole 42 and the inside of the first cylinder block 2. One end of the spool hole 42 far from the flywheel communicates with the exhaust through hole 41, and the other end of the spool hole 42 communicates with the pressure pipe 7. A spool 44 is hermetically and slidably connected to the first sleeve 4 at the position corresponding to the spool hole 42. The spool 44 slides along the length direction of the spool hole 42. The spool 44 is fixedly connected with a spool spring 45. One end of the spool spring 45 far from the spool 44 is fixedly connected to the side wall of the spool hole 42. In the natural state of the spool spring 45, the spool 44 isolates the pressure pipe 7 and the spool hole 42. The pressure pipe 7 is provided with a pressure valve 71. The pressure pipe 7 is connected to a pressure gas source. When the pressure pipe 7 conveys pressure gas, the spool 44 isolates the exhaust through hole 41 and the exhaust passage 62, and the pressure hole 43 communicates with the pressure pipe 7 through the spool hole 42.

[0057] When the press is working normally, the first cylinder block 2 is filled with pressure gas, and the spool 44 is located at the position of the pressure pipe 7. When the press brakes are completed, the air pressures in the first cylinder block 2 and the air bag 91 are equal to the atmospheric pressure. At this time, it is necessary to refill the first cylinder block 2 with pressure gas. First, close the pressure relief valve 93 of the pressure relief assembly 9, and then open the pressure valve 71. The pressure pipe 7 conveys pressure gas to the first cylinder block 2. The pressure gas pushes the spool 44 to overcome the elastic force of the spool spring 45. The spool 44 moves to the position of the exhaust through hole 41. The spool 44 isolates the exhaust through hole 41 and the exhaust passage 62, reducing the probability that the pressure gas conveyed from the pressure pipe 7 to the first cylinder block 2 overflows from the exhaust passage 62. The pressure hole 43 communicates with the pressure pipe 7 through the spool hole 42. As the air pressure in the first cylinder block 2 increases, the pressure gas pushes the piston head 3 to move away from the flywheel. The piston head 3 is separated from the piston rod 6. The exhaust through hole 41 is disconnected from the exhaust passage 62, and the piston rod 6 also releases the braking effect on the flywheel. Then close the pressure valve 71 to stop conveying pressure gas to the first cylinder block 2. The spool 44 moves to the position of the pressure pipe 7 under the action of the spool spring 45. The spool 44 isolates the pressure pipe 7 and the spool hole 42, and the braking system returns to the initial state.

[0058] To adjust the force of the first elastic member 82 on the piston head 3, an adjusting bolt 83 is provided, which will be described in detail in another embodiment of the present application:

[0059] Refer to Figure 2 and Figure 6, at the end of the second cylinder block 8 away from the flywheel, a plurality of adjusting bolts 83 are threadedly connected. One end of the adjusting bolt 83 close to the flywheel abuts against one end of the first elastic member 82 away from the flywheel. According to the required braking force and the air source pressure on site, the position of the adjusting bolt 83 is adjusted to flexibly adjust the thrust of the first elastic member 82 on the piston head 3, thereby obtaining a reliable braking force and appropriate braking sensitivity. A guide post 81 is fixedly connected to the second cylinder block 8. The guide post 81 is arranged along the axis direction of the second cylinder block 8. The first elastic member 82 is sleeved on the guide post 81. A second sleeve 5 is fixedly connected to the side of the piston head 3 away from the flywheel. The second sleeve 5 is arranged along the axis direction of the guide post 81. The second sleeve 5 is sleeved on the first elastic member 82 at a position close to the piston head 3. The guide post 81 and the second sleeve 5 limit the radial displacement of the first elastic member 82 and reduce the probability of the first elastic member 82 being skewed.

[0060] The embodiment of the present application reduces the probability of the friction heat generation causing the friction plate to undergo thermal fade.

[0061] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. The key point of each embodiment is to illustrate the differences from other embodiments.

[0062] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A brake system for a screw press with efficient heat dissipation, characterized in that, it includes: A first cylinder body, arranged on the side of the press frame corresponding to the flywheel; A piston head, sealingly and slidably connected to the first cylinder body, the piston head can slide towards the flywheel, a first sleeve is arranged on the side of the piston head close to the flywheel, and the first sleeve is provided with exhaust through holes; A piston rod, arranged in the first cylinder body, the end of the piston rod far from the flywheel is sealingly and slidably in the first sleeve, the piston rod can move towards or away from the flywheel, the end of the piston rod close to the flywheel extends out of the first cylinder body and can abut against the flywheel, and the piston rod is provided with an exhaust passage; A first elastic member, connected to the piston head, can drive the piston head to slide towards the flywheel. As the piston head moves towards the flywheel, the piston head abuts against the piston rod, the piston rod abuts against the flywheel, the exhaust through holes communicate with the exhaust passage, and the gas in the first cylinder body is sprayed to the abutting position between the flywheel and the piston rod through the exhaust passage; A pressure pipe, communicating with the first cylinder body, used to pressurize the first cylinder body to drive the piston head to move away from the flywheel; A pressure relief component, arranged on the first cylinder body, used to reduce the air pressure in the first cylinder body. The pressure relief component includes a pressure relief valve, the pressure relief valve communicates with the first cylinder body, and the end of the pressure relief valve far from the first cylinder body communicates with an air bag; A brake pad is arranged at the end of the piston rod close to the flywheel, the brake pad can abut against the flywheel, the exhaust passage extends to the position of the brake pad, and a diversion groove is arranged on the surface of the brake pad close to the flywheel, and the diversion groove communicates with the exhaust passage; The first sleeve is provided with a slide valve hole and a pressure hole, the pressure hole communicates with the slide valve hole and the inside of the first cylinder body, one end of the slide valve hole communicates with the exhaust through hole, the other end of the slide valve hole communicates with the pressure pipe, a valve core is sealingly and slidably connected to the first sleeve corresponding to the slide valve hole, the valve core slides along the length direction of the slide valve hole, the valve core is connected with a slide valve spring, and in the natural state of the slide valve spring, the valve core isolates the pressure pipe and the slide valve hole; When the pressure pipe conveys pressurized gas, the valve core isolates the exhaust through hole and the exhaust passage, and the pressure hole communicates with the pressure pipe through the slide valve hole; The piston rod is provided with a second elastic member, and the second elastic member gives a force to the piston rod away from the flywheel.

2. The brake system for a screw press with efficient heat dissipation according to claim 1, characterized in that: The first cylinder body is provided with an adjusting bolt, the adjusting bolt abuts against the first elastic member, and the adjusting bolt is used to adjust the force of the first elastic member on the piston head.

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