CN210392553U - Adjustable damping buffer braking system - Google Patents
Adjustable damping buffer braking system Download PDFInfo
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- CN210392553U CN210392553U CN201921452388.3U CN201921452388U CN210392553U CN 210392553 U CN210392553 U CN 210392553U CN 201921452388 U CN201921452388 U CN 201921452388U CN 210392553 U CN210392553 U CN 210392553U
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Abstract
The utility model provides an adjustable damping buffer braking system, belonging to the technical field of belt conveyor braking, comprising a damping buffer braking device, a hydraulic station, a speed sensor and a PLC electric cabinet; the damping buffer brake device comprises a base, a groove angle adjusting seat, a guide device, a hydraulic oil cylinder, a damping plate middle support, a damping plate groove angle adjusting support and a damping plate. The adjustable damping buffer braking system improves the technical problem that the groove angle and the position of a damping plate in the existing damping device cannot be adjusted, can be provided with a plurality of damping buffer braking devices according to the length of a conveying belt, is controlled by the same PLC electric cabinet, can realize multi-station linkage, can meet the use requirements of various working conditions of a large-capacity, high-power and large-inclination-angle coal mine downward belt conveyor, and can effectively solve the problems that the downward belt conveyor is difficult to start and the braking safety is not high.
Description
Technical Field
The utility model belongs to the technical field of the braking of belt conveyor, a damping buffering braking system with adjustable is specifically disclosed.
Background
With the development of the mine industry and the improvement of the technology, the belt conveyor is developed in the directions of large-scale, environmental protection, automation and the like, and particularly, the belt conveyor with energy-saving function for downward conveying with large conveying capacity, high power and large inclination angle is an important development direction. The operation condition of the downward belt conveyor is complex, accidents such as slipping, material scattering, runaway and the like are easy to occur, and meanwhile, the problems of difficult starting and low braking safety are also faced.
The damping device is contacted with the conveying belt of the belt conveyor through the damping plate to offset the inclined resistance of the materials and the rubber belt so as to ensure the normal starting of the belt conveyor, and the damping plate comprises a horizontal damping plate and side damping plates arranged on two sides of the horizontal damping plate. The existing downward belt conveyor mainly has two problems: firstly, the groove angle between the lateral damping plate and the horizontal damping plate is not adjustable, the groove angle is not suitable for the change of the groove angle of the whole belt conveyor, the situation that the lateral damping plate is not contacted with the conveying belt exists, the generated damping force is limited, the expected braking effect cannot be achieved, the mechanical impact on a belt conveyor system in the braking process is large, and the stable operation of the belt conveyor is seriously influenced; and the damping plate is fixed in position and is always in contact with the conveying belt, the friction coefficient is large in the starting process of the belt conveyor, the belt conveyor is started to slip, normal production starting cannot be achieved, meanwhile, the damping plate is in long-time contact with the conveying belt in the running process, severe abrasion is generated on the conveying belt and a joint of the conveying belt, and the risk of belt breakage accidents and the use and maintenance cost of equipment are increased.
The fixed position of the damping plate also causes the braking friction force provided by the damping device to be unadjustable, the contact gap between the damping plate and the conveying belt is larger, the braking friction force is small, the braking time is too long, a large amount of heat is generated, the temperature rise is too high, the friction coefficient is rapidly reduced, and the braking failure can be directly caused; the contact clearance between the damping plate and the conveying belt is small, and the braking friction force is too large, so that the belt conveyor cannot be normally started when in heavy load.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a damping buffering braking system with adjustable to improve the technical problem that damping plate groove angle and position can not be adjusted among the current damping device.
In order to achieve the purpose, the utility model provides an adjustable damping buffering braking system, which comprises a damping buffering braking device, a hydraulic station, a speed sensor for detecting the speed of a conveying belt and a PLC electric cabinet for adjusting the oil pressure of the hydraulic station according to the detection value of the speed sensor; the damping buffer brake device comprises a base, a groove angle adjusting seat, a guide device, a hydraulic oil cylinder, a damping plate middle support, a damping plate groove angle adjusting support and a damping plate; the groove angle adjusting seat is positioned above the base; the guide device is arranged between the base and the groove angle adjusting seat, and a damping spring is sleeved outside the guide device; the hydraulic oil cylinder is positioned between the two guide devices, the cylinder body is fixed on the base, and the piston rod is connected with the groove angle adjusting seat; the middle bracket of the damping plate is horizontally arranged on the groove angle adjusting seat; the damping plate groove angle adjusting support is positioned on two sides of the damping plate middle support and inclines towards the damping plate middle support, an arc-shaped long groove and a plurality of circular pin shaft holes are formed in the damping plate groove angle adjusting support at equal intervals, and a pin shaft penetrates through one of the arc-shaped long groove and the circular pin shaft holes to fix the damping plate groove angle adjusting support on the groove angle adjusting seat; the damping plate is arranged on the damping plate middle support and the damping plate groove angle adjusting support; the hydraulic station is used for providing hydraulic oil for the hydraulic oil cylinder.
Furthermore, the hydraulic oil cylinder is a single piston rod type hydraulic oil cylinder; the hydraulic station comprises an oil tank, a first electromagnetic ball valve, a hydraulic pump, a motor connected with the hydraulic pump, a hydraulic control one-way valve, a pilot overflow valve, a proportional speed regulating valve, a three-position four-way electro-hydraulic valve, a two-way hydraulic lock and a first energy accumulator; an oil inlet of the first electromagnetic ball valve is connected with an oil tank through an oil pipe, and an oil outlet of the first electromagnetic ball valve is connected with an oil inlet of the hydraulic pump; an oil outlet of the hydraulic pump is connected with an oil inlet of the hydraulic control one-way valve; the oil outlet of the hydraulic control one-way valve is respectively connected with the oil inlet of the pilot overflow valve and the oil inlet of the proportional speed regulating valve; the oil outlet of the pilot overflow valve is connected with the oil tank; a port P of the three-position four-way electro-hydraulic valve is connected with an oil outlet of the proportional speed regulating valve, a port T is connected with an oil pipe between the pilot overflow valve and the oil tank, and a port A and a port B are respectively connected with a port A and a port D of the bidirectional hydraulic lock; the port B and the port C of the bidirectional hydraulic lock are respectively connected to oil ways where the two hydraulic oil cylinders are located; the first energy accumulator is connected to one of the oil paths where the two hydraulic oil cylinders are located; the PLC electric cabinet is electrically connected with the first electromagnetic ball valve, the motor, the proportional speed regulating valve and the three-position four-way electro-hydraulic valve.
Further, the hydraulic pump station also comprises a normally closed two-position two-way electromagnetic valve and a second energy accumulator; the normally closed two-position two-way electromagnetic valve is electrically connected with the PLC electric cabinet, the oil inlet is connected with the second energy accumulator, and the oil outlet is connected with an oil pipe between the pilot overflow valve and the oil tank.
Furthermore, an oil pipe between the pilot overflow valve and the oil tank is provided with an oil return filter; the T port of the three-position four-way electro-hydraulic valve and the oil outlet of the normally closed two-position two-way electromagnetic valve are both connected to an oil pipe between the pilot overflow valve and the return oil filter.
Further, the return oil filter is connected with a second electromagnetic ball valve in parallel; and the PLC electric cabinet is electrically connected with the second electromagnetic ball valve.
Further, a pressure gauge and a pressure switch are arranged between the first energy accumulator and the hydraulic oil cylinder, between the hydraulic control one-way valve and the proportional speed regulating valve and between the normally closed two-position two-way electromagnetic valve and the second energy accumulator.
Furthermore, the three-position four-way electro-hydraulic valve is provided with a manual emergency control device; the PLC electric cabinet and the motor are all explosion-proof.
Further, a liquid level and liquid temperature meter is arranged outside the oil tank.
Further, an air filter is mounted on the oil tank.
Furthermore, a cylinder body of the hydraulic oil cylinder is connected with the base through a shaft pin, and a piston rod is connected with the groove angle adjusting seat through the shaft pin; the middle bracket of the damping plate is arranged on the groove angle adjusting seat through a shaft pin; the damping plate is fixed on the damping plate middle support and the damping plate groove angle adjusting support through countersunk bolts.
The utility model has the advantages that:
when the damping buffer brake device is used, the base of the damping buffer brake device is fixed on the middle frame of the belt conveyor through the bolts, and the position of the support is adjusted by adjusting the groove angle of the damping plate, so that the side angle of the damping plate is consistent with the groove angle of the belt conveyor, the damping plate is ensured to be in complete contact with the lower surface of the conveying belt, and the braking effect is fully exerted. The speed sensor detects the speed of conveyer belt to give the PLC electric cabinet with the detected value transmission, the PLC electric cabinet is according to the oil pressure of detected value control hydraulic pressure station output, and hydraulic cylinder's piston rod goes up and down, drives the groove angle seat and is close to or keeps away from the conveyer belt lower surface, realizes that the damping plate position is adjustable. When the belt conveyor is started, the speed is low, the lifting distance of a piston rod of the hydraulic oil cylinder is small, the friction between the damping plate and the conveying belt is small, the slipping condition is improved, and the normal starting of the belt conveyor is ensured; after the normal start, the piston rod retracts, the damping plate is separated from the conveying belt, the abrasion to the conveying belt and a joint of the conveying belt is reduced, and the risk of belt breakage accidents and the use and maintenance cost of equipment are reduced; when the speed reducer starts braking, the lifting distance of the piston rod is adjusted at any time according to the speed of the conveying belt, so that the braking torque is adjustable, and the braking safety is improved. According to the length of the conveying belt, a plurality of damping buffering braking devices can be arranged and controlled by the same PLC electric cabinet, so that a plurality of linkages can be realized, the use requirements of various working conditions of the downward belt conveyor in a coal mine with large transportation capacity, high power and large inclination angle can be met, and the problems of difficult starting and low braking safety of the downward belt conveyor can be effectively solved.
Drawings
Fig. 1 is an installation schematic view of an adjustable damping buffer braking system provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a damping buffer braking device in the adjustable damping buffer braking system shown in FIG. 1;
FIG. 3 is a hydraulic schematic diagram of the adjustable damping cushion brake system shown in FIG. 1;
FIG. 4 is a state diagram of a hydraulic cylinder and a damping plate of the damping cushion braking device shown in FIG. 2 in a braking state of the lower belt conveyor;
fig. 5 is a state diagram of the hydraulic cylinder and the damping plate of the damping buffer brake device shown in fig. 2 in a normal operation state of the downward belt conveyor.
In the figure: 1-damping buffer brake device; 1.1-base; 1.2-groove angle adjusting seat; 1.3-a guide; 1.4-hydraulic cylinder; 1.5-damping plate middle support; 1.6-damping plate slot angle adjusting bracket; 1.7-damping plate; 1.8-damping spring; 2-a hydraulic station; a-an oil tank; b 1-first electromagnetic ball valve; b 2-second electromagnetic ball valve; c-a hydraulic pump; d-a motor; e-a hydraulic control check valve; f-a pilot overflow valve; g-a proportional speed regulating valve; h-a three-position four-way electro-hydraulic valve; i-bidirectional hydraulic lock; j1 — first accumulator; j2 — a second accumulator; k-normally closed two-position two-way electromagnetic valve; l-return oil filter; m-pressure gauge and pressure switch; n-liquid level liquid thermometer; an o-air filter; 3-a speed sensor; 4-a PLC electric cabinet; 100-conveyor belt.
Detailed Description
The embodiment provides an adjustable damping buffer braking system, which comprises a damping buffer braking device 1, a hydraulic station 2, a speed sensor 3 for detecting the speed of a conveying belt 100 and a PLC (programmable logic controller) electric cabinet 4 for adjusting the oil pressure of the hydraulic station 2 according to the detection value of the speed sensor 3; the damping buffer brake device 1 comprises a base 1.1, a groove angle adjusting seat 1.2, a guide device 1.3, a hydraulic oil cylinder 1.4, a damping plate middle support 1.5, a damping plate groove angle adjusting support 1.6 and a damping plate 1.7; the groove angle adjusting seat 1.2 is positioned above the base 1.1; the guide device 1.3 is arranged between the base 1.1 and the groove angle adjusting seat 1.2, and a damping spring 1.8 is sleeved outside the guide device; the hydraulic oil cylinder 1.4 is positioned between the two guide devices 1.3, the cylinder body is fixed on the base 1.1, and the piston rod is connected with the groove angle adjusting seat 1.2; a middle bracket 1.5 of the damping plate is horizontally arranged on the groove angle adjusting seat 1.2; the damping plate groove angle adjusting supports 1.6 are positioned on two sides of the damping plate middle support 1.5 and incline towards the damping plate middle support 1.5, circular arc-shaped long grooves and a plurality of circular pin shaft holes distributed at equal intervals are formed in the damping plate groove angle adjusting supports 1.6, and a pin shaft penetrates through one of the circular arc-shaped long grooves and the circular pin shaft holes to fix the damping plate groove angle adjusting supports 1.6 on the groove angle adjusting seats 1.2; the damping plate 1.7 is arranged on the damping plate middle bracket 1.5 and the damping plate groove angle adjusting bracket 1.6; the hydraulic station 2 is used to supply hydraulic oil to the hydraulic rams 1.4.
When the damping buffer braking device is used, the base 1.1 of the damping buffer braking device 1 is fixed on a middle frame of a belt conveyor through bolts, the position of a shaft pin in a circular arc-shaped long groove is adjusted according to the size of a groove angle of the belt conveyor, one of circular pin shaft holes is selected to be inserted into the shaft pin, and then the position of the damping plate groove angle adjusting support 1.6 can be adjusted, so that the side angle of the damping plate is consistent with the size of the groove angle of the belt conveyor, the damping plate 1.7 is ensured to be in complete contact with the lower surface of the conveying belt 100, and the braking effect is fully exerted. Speed sensor 3 detects the speed of conveyer belt 100 to give PLC electric cabinet 4 with the detected value transmission, PLC electric cabinet 4 is according to the oil pressure of 2 outputs of detected value control hydraulic pressure station, and hydraulic cylinder 1.4's piston rod goes up and down, drives groove angle adjusting seat 1.2 and is close to or keeps away from conveyer belt 100 lower surface, realizes that damping plate 1.7 position is adjustable. When the belt conveyor is started, the speed is low, the lifting distance of a piston rod of the hydraulic oil cylinder 1.4 is small, the friction between the damping plate 1.7 and the conveying belt 100 is small, the slipping condition can be improved, and the normal starting of the belt conveyor is ensured; after normal starting, the piston rod retracts, the damping plate 1.7 is separated from the conveying belt 100, abrasion to the conveying belt 100 and a joint of the conveying belt 100 is reduced, and the risk of belt breakage accidents and the use and maintenance cost of equipment are reduced; when the speed reducer starts braking, the lifting distance of the piston rod is adjusted at any time according to the speed of the conveying belt 100, so that the braking torque is adjustable, and the braking safety is improved. The guide device 1.3 is used for limiting the left and right movement of the groove angle adjusting seat 1.2, can adopt the forms of a guide sleeve and a guide rod, and the guide device 1.3 is sleeved with a damping spring 1.8, so that the damping device has the effects of buffering and absorbing shock and reduces the rigid impact of the braking process on the belt conveyor. According to the length of the conveying belt 100, a modular design is adopted, a plurality of damping buffering braking devices 1 are arranged and controlled by the same PLC electric cabinet 4, linkage of the plurality of damping buffering braking devices 1 can be realized, and safety braking is guaranteed.
In the adjustable damping buffer braking system, the hydraulic station 2 and the PLC electric cabinet 4 can adopt the prior art. Preferably, the present embodiment provides a hydraulic station 2 that ensures a rapid braking response, automatic adjustment of the braking force, and a dual mechanical and hydraulic self-locking function. The hydraulic oil cylinder 1.4 is a single piston rod type hydraulic oil cylinder; the hydraulic station 2 comprises an oil tank a, a first electromagnetic ball valve b1, a hydraulic pump c, a motor d connected with the hydraulic pump c, a hydraulic control one-way valve e, a pilot overflow valve f, a proportional speed regulating valve g, a three-position four-way electro-hydraulic valve h, a two-way hydraulic lock i and a first energy accumulator j 1; an oil inlet of the first electromagnetic ball valve b1 is connected with an oil tank a through an oil pipe, and an oil outlet is connected with an oil inlet of the hydraulic pump c; an oil outlet of the hydraulic pump c is connected with an oil inlet of the hydraulic control one-way valve e; the oil outlet of the hydraulic control one-way valve e is respectively connected with the oil inlet of the pilot overflow valve f and the oil inlet of the proportional speed control valve g; the oil outlet of the pilot overflow valve g is connected with an oil return tank a; a port P of the three-position four-way electro-hydraulic valve h is connected with an oil outlet of the proportional speed regulating valve g, a port T is connected with an oil pipe between the pilot overflow valve g and the oil tank a, and a port A and a port B are respectively connected with a port A and a port D of the bidirectional hydraulic lock i; the port B and the port C of the bidirectional hydraulic lock i are respectively connected to oil ways where the two hydraulic oil cylinders 1.4 are located; the first energy accumulator j1 is connected to one of the oil paths where the two hydraulic oil cylinders 1.4 are located; the PLC electric cabinet 4 is electrically connected with the first electromagnetic ball valve b1, the motor d, the proportional speed regulating valve g and the three-position four-way electro-hydraulic valve h.
The working process is as follows:
when the belt conveyor is started in no-load/full-load mode, the PLC electric control box 4 sends an opening signal after receiving a belt conveyor starting signal (the starting speed can be detected by the speed sensor 3 or manually input), the first electromagnetic ball valve b1, the motor d, the proportional speed regulating valve g and the three-position four-way electro-hydraulic valve h are electrically opened, hydraulic oil passes through the first electromagnetic ball valve b1, the hydraulic pump c, the hydraulic control one-way valve e, the proportional speed regulating valve g, the three-position four-way electro-hydraulic valve h and the two-way hydraulic lock i and is input into the hydraulic oil cylinder 1.4 and the first energy accumulator j1, the bottom pressure is increased, the piston rod is extended, the oil pressure input into the hydraulic oil cylinder 1.4 is regulated by controlling the proportional speed regulating valve g, the damping plate 1.7 is lifted to be in contact with the conveying belt 100, the braking torque generated by friction is continuously increased to a preset value (the preset value is, and is programmed into a control system of the PLC electric cabinet 4), under the combined action of the two-way hydraulic lock i and the first energy accumulator j1, the pressure in the hydraulic oil cylinder 1.4 is kept constant, and a stable braking torque is provided, so that the self-downward sliding force generated by the conveyer belt 100 and materials on the conveyer belt 100 under the action of gravity and inertia is counteracted, and the belt conveyor is slowly and safely started under the drive of a motor;
when the belt conveyor reaches a normal running speed, the speed sensor 3 transmits a detected signal value to the PLC electric cabinet 4, the PLC electric cabinet 4 sends a control signal to reduce the flow of the proportional speed regulating valve g to enable the piston rod to retract, the damping plate 1.7 is separated from the conveyor belt 100, braking torque is applied after the application, the motor d stops running, the hydraulic system maintains pressure under the action of the bidirectional hydraulic lock i and the first energy accumulator j1, and when the pressure of the hydraulic system is lower than a set value, the motor d runs and continues to supply pressure to the set value to ensure that the position of the piston rod is unchanged;
during the operation of the belt conveyor, the speed sensor 3 automatically monitors the operation speed of the conveyor belt 100 at any time, transmits the acquired speed signal to the PLC electric cabinet 4, and after operation, comparison and judgment of a control system in the PLC electric cabinet 4, once the speed is found to be greater than the upper limit of the safety setting, the PLC electric cabinet 4 rapidly starts the hydraulic station 2, and high-pressure oil in the first energy accumulator j1 drags the lower hydraulic oil cylinder 1.4 to rapidly lift the groove angle adjusting seat 1.2, so that the damping plate 1.7 is in contact with the lower belt surface of the conveyor belt 100 to generate friction braking torque, thereby reliably stopping the downslide conveyor belt 100 and the material;
when the PLC electric control box 4 receives a belt conveyor stopping signal (starting speed can be detected by the speed sensor 3 or manual input is carried out), the current magnitude of the proportional speed regulating valve g is controlled to keep a proper proportional value with the belt conveyor stopping deceleration, the rising height of the piston rod can be adapted to the belt conveyor stopping deceleration, and slow and safe stopping is realized within a specified time;
when an emergency accident occurs and emergency parking is required, the hydraulic system provides the maximum power to park in the allowed shortest time;
when a power outage occurs, the hydraulic system may complete the belt conveyor shut down without electrical power by releasing the hydraulic oil in the first accumulator j 1.
In the hydraulic system, the flow direction of the hydraulic oil flowing out of the proportional speed regulating valve g among the three-position four-way electro-hydraulic valve h, the two-way hydraulic lock i, the first accumulator j1 and the hydraulic oil cylinder 1.4 is as follows: the three-position four-way electro-hydraulic valve h is driven to the upper position, a port P of the three-position four-way electro-hydraulic valve h is connected to a port A, the port A of the three-position four-way electro-hydraulic valve h is connected to a port A of the two-way hydraulic lock i, the port A of the two-way hydraulic lock i is connected to a port B, the hydraulic oil cylinder 1.4 and the first energy accumulator j1 are connected, the hydraulic oil cylinder 1.4 is connected to a port C of the two-way hydraulic lock i, the port C of the two-way hydraulic lock i is connected to a port D, the port D of the two-way hydraulic lock i is connected to the port B; the three-position four-way electro-hydraulic valve h is driven to the lower position, a port P of the three-position four-way electro-hydraulic valve h is connected to a port B, a port B of the three-position four-way electro-hydraulic valve h is connected to a port D of the two-way hydraulic lock i, a port D of the two-way hydraulic lock i is connected to a port C, the hydraulic oil cylinder 1.4 and the first energy accumulator j1 are connected, the hydraulic oil cylinder 1.4 is connected to the port B of the two-way hydraulic lock i, the port B of the two-way hydraulic lock i is connected to the port A, the port A of the two-way hydraulic lock i is connected to the port A; and the three-position four-way electro-hydraulic valve h is opened to the middle position, the three-position four-way electro-hydraulic valve h and the two-way hydraulic lock i are both closed, and the first energy accumulator j1 supplements hydraulic oil to the hydraulic oil cylinder 1.4. When the hydraulic pressure in the hydraulic system is higher than a preset value, the pilot overflow valve f is opened, and part of hydraulic oil flows back to the oil tank a through the pilot overflow valve f.
Further, the hydraulic pump station also comprises a normally closed two-position two-way electromagnetic valve k and a second energy accumulator j 2; the normally closed two-position two-way electromagnetic valve k is electrically connected with the PLC electric control box 4, the oil inlet is connected with the second energy accumulator j2, and the oil outlet is connected with an oil pipe between the pilot overflow valve f and the oil tank a. The second energy accumulator j2 mainly supplies oil to the oil tank a, works intermittently, when the pressure of the oil tank a is lower than the lowest set value, the normally closed two-position two-way electromagnetic valve k is opened, hydraulic oil in the second energy accumulator j2 flows into the oil tank a, the pressure is supplemented, and when the pressure reaches the highest set value, the oil supply is stopped, so that the energy consumption is saved.
Further, an oil pipe between the pilot overflow valve f and the oil tank a is provided with an oil return oil filter l; the T port of the three-position four-way electro-hydraulic valve h and the oil outlet of the normally closed two-position two-way electromagnetic valve k are both connected to an oil pipe between the pilot overflow valve f and the return oil filter l.
Further, the return oil filter l is connected in parallel with a second electromagnetic ball valve b 2; the PLC electric cabinet 4 is electrically connected with the second electromagnetic ball valve b 2. When the return oil filter l is clogged or deactivated, the second electromagnetic ball valve b2 is opened, and hydraulic oil flows back to the oil tank a through the second electromagnetic ball valve b 2.
Further, pressure gauges and pressure switches m are arranged between the first energy accumulator j1 and the hydraulic oil cylinder 1.4, between the hydraulic control one-way valve e and the proportional speed regulating valve g, and between the normally closed two-position two-way electromagnetic valve k and the second energy accumulator j2, and are used for detecting the pressure value of the whole hydraulic system and feeding back the hydraulic value to the PLC electric cabinet 4.
Furthermore, the three-position four-way electro-hydraulic valve h is provided with a manual emergency control device; the PLC electric cabinet 4 and the motor d are all explosion-proof.
Furthermore, a liquid level liquid thermometer n for measuring the liquid level and the temperature of the hydraulic oil in the oil tank a is arranged outside the oil tank a.
Further, an air filter o is installed on the oil tank a for filtering air entering the oil tank a.
Furthermore, a cylinder body of the hydraulic oil cylinder 1.4 is connected with the base 1.1 through a shaft pin, and a piston rod is connected with the groove angle adjusting seat 1.2 through the shaft pin; the middle bracket 1.5 of the damping plate is arranged on the groove angle adjusting seat 1.2 through a shaft pin; the damping plate 1.7 is fixed on the damping plate middle bracket 1.5 and the damping plate groove angle adjusting bracket 1.6 through countersunk bolts. The shaft pin is convenient to connect and disassemble and convenient to install and maintain.
Furthermore, the damping plate 1.7 is made of ultra-high molecular wear-resistant material UHMW-PE500, has high wear resistance, impact resistance, stress cracking resistance and noise damping performance, can reduce the wear to the conveying belt 100 and joints, and can also play a role in energy conservation.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.
Claims (10)
1. An adjustable damping buffer braking system is characterized by comprising a damping buffer braking device, a hydraulic station, a speed sensor for detecting the speed of a conveying belt and a PLC (programmable logic controller) electric cabinet for adjusting the oil pressure of the hydraulic station according to the detection value of the speed sensor;
the damping buffer brake device comprises a base, a groove angle adjusting seat, a guide device, a hydraulic oil cylinder, a damping plate middle support, a damping plate groove angle adjusting support and a damping plate;
the groove angle adjusting seat is positioned above the base;
the guide device is arranged between the base and the groove angle adjusting seat, and a damping spring is sleeved outside the guide device;
the hydraulic oil cylinder is positioned between the two guide devices, the cylinder body is fixed on the base, and the piston rod is connected with the groove angle adjusting seat;
the middle bracket of the damping plate is horizontally arranged on the groove angle adjusting seat;
the damping plate groove angle adjusting support is positioned on two sides of the damping plate middle support and inclines towards the damping plate middle support, an arc-shaped long groove and a plurality of circular pin shaft holes are formed in the damping plate groove angle adjusting support at equal intervals, and a pin shaft penetrates through one of the arc-shaped long groove and the circular pin shaft holes to fix the damping plate groove angle adjusting support on the groove angle adjusting seat;
the damping plate is arranged on the damping plate middle support and the damping plate groove angle adjusting support;
the hydraulic station is used for providing hydraulic oil for the hydraulic oil cylinder.
2. The adjustable damped cushioned brake system of claim 1 wherein the hydraulic ram is a single piston rod hydraulic ram;
the hydraulic station comprises an oil tank, a first electromagnetic ball valve, a hydraulic pump, a motor connected with the hydraulic pump, a hydraulic control one-way valve, a pilot overflow valve, a proportional speed regulating valve, a three-position four-way electro-hydraulic valve, a two-way hydraulic lock and a first energy accumulator;
an oil inlet of the first electromagnetic ball valve is connected with an oil tank through an oil pipe, and an oil outlet of the first electromagnetic ball valve is connected with an oil inlet of the hydraulic pump;
an oil outlet of the hydraulic pump is connected with an oil inlet of the hydraulic control one-way valve;
the oil outlet of the hydraulic control one-way valve is respectively connected with the oil inlet of the pilot overflow valve and the oil inlet of the proportional speed regulating valve;
the oil outlet of the pilot overflow valve is connected with an oil tank;
a port P of the three-position four-way electro-hydraulic valve is connected with an oil outlet of the proportional speed regulating valve, a port T is connected with an oil pipe between the pilot overflow valve and the oil tank, and a port A and a port B are respectively connected with a port A and a port D of the bidirectional hydraulic lock;
the port B and the port C of the bidirectional hydraulic lock are respectively connected to oil ways where the two hydraulic oil cylinders are located;
the first energy accumulator is connected to one of the oil paths where the two hydraulic oil cylinders are located;
and the PLC electric cabinet is electrically connected with the first electromagnetic ball valve, the motor, the proportional speed regulating valve and the three-position four-way electro-hydraulic valve.
3. The adjustable damping buffer brake system according to claim 2, wherein the hydraulic pump station further comprises a normally closed two-position two-way solenoid valve and a second accumulator;
the normally closed two-position two-way electromagnetic valve is electrically connected with the PLC electric cabinet, the oil inlet is connected with the second energy accumulator, and the oil outlet is connected with an oil pipe between the pilot overflow valve and the oil tank.
4. The adjustable damping buffer brake system according to claim 3, wherein an oil pipe between the pilot overflow valve and an oil tank is provided with an oil return filter;
and the T port of the three-position four-way electro-hydraulic valve and the oil outlet of the normally closed two-position two-way electromagnetic valve are connected to an oil pipe between the pilot overflow valve and the return oil filter.
5. The adjustable damping buffer brake system according to claim 4, wherein the return oil filter is connected with a second electromagnetic ball valve in parallel;
and the PLC electric cabinet is electrically connected with the second electromagnetic ball valve.
6. The adjustable damping buffer brake system according to claim 5, wherein a pressure gauge and a pressure switch are arranged between the first energy accumulator and the hydraulic oil cylinder, between the hydraulic control one-way valve and the proportional speed regulating valve and between the normally closed two-position two-way electromagnetic valve and the second energy accumulator.
7. The adjustable damping cushioned brake system of claim 2, wherein the three-position, four-way electro-hydraulic valve is equipped with a manual emergency control;
the PLC electric cabinet and the motor are all explosion-proof.
8. The adjustable damping buffer brake system according to claim 2, wherein a liquid level thermometer is arranged outside the oil tank.
9. The adjustable damping cushion brake system of claim 2, wherein an air cleaner is mounted on the oil tank.
10. The adjustable damping buffer brake system according to claim 1, wherein the cylinder body of the hydraulic cylinder is connected with the base through a shaft pin, and the piston rod is connected with the groove angle adjusting seat through a shaft pin;
the middle bracket of the damping plate is arranged on the groove angle adjusting seat through a shaft pin;
the damping plate is fixed on the damping plate middle support and the damping plate groove angle adjusting support through countersunk bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921452388.3U CN210392553U (en) | 2019-09-03 | 2019-09-03 | Adjustable damping buffer braking system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921452388.3U CN210392553U (en) | 2019-09-03 | 2019-09-03 | Adjustable damping buffer braking system |
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| CN210392553U true CN210392553U (en) | 2020-04-24 |
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| CN201921452388.3U Active CN210392553U (en) | 2019-09-03 | 2019-09-03 | Adjustable damping buffer braking system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946674A (en) * | 2020-09-25 | 2020-11-17 | 南京理工大学 | Multi-energy-accumulator balancing device for large-load cantilever servo mechanism and design method |
-
2019
- 2019-09-03 CN CN201921452388.3U patent/CN210392553U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946674A (en) * | 2020-09-25 | 2020-11-17 | 南京理工大学 | Multi-energy-accumulator balancing device for large-load cantilever servo mechanism and design method |
| CN111946674B (en) * | 2020-09-25 | 2022-07-19 | 南京理工大学 | Multi-energy-accumulator balancing device for heavy-load cantilever servo mechanism and design method |
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Address after: 030032 No.89, Tanghuai Road, Taiyuan Tanghuai Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Taizhong Xiangming Intelligent Equipment Co.,Ltd. Address before: 030000 No.89, Tanghuai Road, Taiyuan Tanghuai Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee before: TAIYUAN XIANGMING INTELLIGENT EQUIPMENT Co.,Ltd. |