CN101255898B - Start-stop synchronous control hanging rail brake - Google Patents

Abstract

A start-stop synchronization control hanging rail type arrester used for braking system of rail type transport equipment is provided, which has simple structure, easy operation and start-stop synchronization control function. The present invention comprises a synchronization control mechanism and a hydraulic pressure locking mechanism; the synchronization control mechanism comprises a manual pump, a reversing valve, a stop valve, a check valve, a relief valve, a single directional hydraulic cylinder and a double-acting cylinder; the oil inlet and outlet ports of the single directional hydraulic cylinder are connected with the stop valve and cavity of pole of the double-acting cylinder, the oil inlet port of the stop valve is connected with manual pump; the hydraulic pressure locking mechanism comprises a dangler connection board, a support rack, a square rigid body, a pin, a driver plate, a transmission shaft, a friction block, a spring, a spring baffle, a support axes, a nut, a location-limited plate, an idler wheel and a bearing; the dangler of cavity of pole of double-acting cylinder is connected with dangler connection board by pin; the square rigid body is connected driver plate by pin, the driver board is connected with the transmission shaft by pin, the friction block is arranged on transmission shaft by taper pin.

Description

Start-stop synchronous control hanging rail brake

technical field

The invention relates to a start-stop synchronous suspension rail type safety brake protection device.

Background technique

Existing suspension rail brake adopts two kinds of modes mostly, mechanical type suspension rail brake and hydraulic type suspension rail brake. The mechanical suspension rail brake has a huge structure. Although the braking torque is large, the braking process is relatively short, and it is easy to generate a large impact, resulting in insufficient braking stability and accidents. Although the braking process of the hydraulic suspension rail brake is more stable than that of the mechanical type, it can realize stepless speed regulation during the braking process, but there are many kinds of hydraulic components in the hydraulic system, which makes the hydraulic system too complicated and the operation is cumbersome. At the same time, the hydraulic braking system adopts The open system is easily affected by the surrounding environment. After the oil is polluted, the whole system (especially the important valve parts) often fails to work normally. Neither of these two methods can achieve start-stop synchronization. At present, during the working process of many transportation equipment, especially in downhill conditions, the sliding force generated by the gravity of the material greatly exceeds the running resistance. When parking and braking, The sliding force all acts on the braking device, causing the acceleration of the transportation equipment to increase suddenly, which may easily lead to the failure of the braking device and cause speeding, causing injuries and other accidents. In this case, it is required that the speed of the transportation equipment can be adjusted in time according to the specific working environment, that is, the braking and starting are synchronized with the power equipment, so as to achieve the purpose of safe and efficient production.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and propose a suspension rail type brake with simple structure, easy operation and synchronous control function of start and stop.

The present invention includes a synchronous control mechanism and a hydraulic locking mechanism; the synchronous control mechanism includes a hand pump, a reversing valve, a stop valve, a one-way valve, an overflow valve, a single-acting oil cylinder, and a double-acting oil cylinder; the inlet and outlet of the single-acting oil cylinder The oil ports are respectively connected with the shut-off valve and the rod chamber of the double-acting cylinder, the oil inlet of the shut-off valve is connected with the hand pump, the oil inlet of the double-acting cylinder is connected with the outlet of the double-acting cylinder through the overflow valve and the check valve. The oil port is connected; the oil outlet of the hand pump is connected with the oil inlet port (P port) of the reversing valve, and the oil return port (T port) of the reversing valve is connected with the oil tank of the hand pump, and the stop valve is connected through the hydraulic pipe. The road is connected with the oil outlet (A port) of the reversing valve; the hydraulic locking mechanism includes an earring connecting plate, a support frame, a square rigid body, a pin shaft, a transmission plate, a transmission shaft, a friction block, a spring, a spring baffle, and a support shaft , nuts, limiting plates, rollers, bearings; the earring connecting plate is a square plate with a round hole in the middle; the rodless cavity earring of the double-acting cylinder is connected to the earring connecting plate through a pin shaft; there are two on the limiting plate The limit hole, the limit plate connects the support shaft to the support frame through the conical pin; the support frame is a "U"-shaped member, two sets of earring connecting plates are welded at the bottom, and the middle of the two sets of earring connecting plates is welded There is a square rigid body; the square rigid body is connected to the transmission plate through the pin shaft, the transmission plate is connected to the transmission shaft through the pin shaft, and the friction block is installed on the transmission shaft through the conical pin. A pressure gauge is connected to the oil circuit connecting the double-acting cylinder and the single-acting cylinder.

The spring baffle is a steel plate with a round hole in the middle. The friction block is made of wear-resistant material. The support shaft is a stepped shaft whose function is to support the load wheel and related parts. The limiting plate is a steel plate with a limited position, through which the supporting shaft can be positioned on the supporting frame with a certain orientation. The function of the bearing wheel is to make the whole equipment roll on the track. There are two sets of earring connecting plates at the bottom of the support frame, and the rodless chamber earrings of the double-acting oil cylinder are connected to any set of earring connecting plates through pin shafts. The square rigid body is a rectangular parallelepiped welded part, its function is to connect the transmission plate, so that the transmission plate can rotate around the pin shaft connected with the square rigid body; the transmission plate is a steel plate composed of three arcs, and its main function is to transmit force. The spring force of the spring is transmitted to the drive shaft.

When the shut-off valve is opened, the hand pump injects pressure oil into the rod cavity of the double-acting cylinder through the check valve and the reversing valve; The rodless cavity enters the hydraulic circulation system through a one-way valve and an overflow valve. During the working process, when it is necessary to move the transport equipment, enough force can be applied to the earrings of the double-acting cylinder, and the double-acting cylinder will move through the transmission of force, and then through the communication state of the double-acting cylinder and the single-acting cylinder, the The force is transmitted to the single-acting cylinder of the hydraulic locking mechanism. The single-acting cylinder overcomes the spring force of the spring under the action of the pressure oil, and transmits the force to the friction block connected by the transmission shaft through the transmission plate, that is, the friction block is pulled apart. Realize the "opening and starting" action of the braking device. When the transportation equipment needs to be braked, the force acting on the earring of the double-acting oil cylinder can be removed, and the oil in the single-acting oil cylinder will be released under the action of the spring force. Press it back into the rodless cavity of the double-acting oil cylinder. At the same time, the transmission plate will press the friction block connected by the transmission shaft on the track under the action of the spring force to realize the "brake braking" action.

The invention is suitable for the braking system of rail transportation equipment, and can meet the requirements of transportation conditions with a certain slope. Compared with the existing technology, it can effectively avoid the corresponding braking device caused by the excessive sliding force caused by the gravity of the material. Running out of control can successfully reduce the incidence of related accidents. The hand pump adopted in the present invention can supply oil to the entire hydraulic circuit in time to ensure the constant pressure of the circuit; the double-acting oil cylinder can realize the smooth transfer of the braking force of the transportation equipment from the hydraulic pressure to the mechanical force through the one-way valve and the overflow valve. In order to achieve the purpose of synchronous start and stop of the brake and power equipment. The invention is light in weight, simple in structure, easy to install and arrange, and can realize the synchronous automatic control of start and stop of rail transport equipment.

Description of drawings

Figure 1 is a schematic diagram of the hydraulic system.

Fig. 2 is a front view of the mechanical locking structure.

Fig. 3 is a left side view of the mechanical locking structure in Fig. 2 .

Fig. 4 is a structural schematic diagram of the rolling mechanism.

In the figure: 1. Fuel tank, 2. One-way valve, 3. Hand pump, 4. One-way valve, 5. Reversing valve, 6. Single-acting oil cylinder, 7. Stop valve, 8. Pressure gauge, 9. One-way Valve, 10, overflow valve, 11, double-acting oil cylinder, 12, earring connecting plate, 13, square rigid body, 14, load wheel, 15, limit plate, 16, support frame, 17, transmission plate, 18, transmission shaft , 19, 20, 21, pin shaft, 22, oil cylinder rod cavity earring, 23, spring baffle plate, 24, oil inlet, 25, oil cylinder rodless cavity earring, 26, taper pin, 27, friction block, 28, Spring, 29, oil cylinder oil rod, 30, bearing, 31, support shaft, 32, nut, 33, taper pin, 34, bearing end cover, 35, retaining ring, 36, roller, 37, bearing roller.

Detailed ways

The roller 36 rotates around the support shaft 31 under the cooperation of the bearing 30, and the bearing end cover 34 is pressed on the bearing 30 under the cooperation of the circlip 35. There are two circular holes on the limit plate 15, and the limit plate 15 The function is to locate the support shaft 31 on the support frame 16 with the conical pin 33. The support frame 16 is a "U" type weldment, and two groups of earring connecting plates 12 are welded at the bottom of the supporting frame 16. The earring connecting plates 12 The effect is to connect double-acting oil cylinder 11, double-acting oil cylinder 11 is connected on the earring connecting plate 12 with pin 19, welded a square rigid body 13 for connecting drive plate 17 in the middle of two groups of earring connecting plates 12.

First, the oil inlet and outlet of the hand pump 3 are connected to the check valves 2 and 4 respectively, and the oil inlet of the reversing valve 5 is connected to the check valve 4 to form the oil supply and replenishment of the entire hydraulic circuit. The mechanism ensures that the entire hydraulic circuit can drain oil at any time according to the specific working conditions, ensuring the safety of production work; the cut-off valve 7 and the pressure gauge 8 are connected to the oil outlet of the reversing valve 5, and then connected to the rod of the single-acting cylinder 6 cavity and the rod cavity of double-acting cylinder 11; the rod cavity of double-acting cylinder 11 is connected with the inlet (outlet) oil port of single-acting cylinder 6, and the one-way valve 9 and overflow valve 10 are connected in parallel to double-acting cylinder 11 rodless cavity. Next, inject pressure oil into the rod cavity of the double-acting cylinder 11 through the hand pump 3. When the pressure gauge 8 shows that the predetermined value is reached, stop the oil injection and close the shut-off valve 7. At this time, the entire hydraulic circuit has been established.

The working condition of the present invention depends on the working condition of the whole transportation equipment. When the transportation equipment starts to move, the external load acts on the round earring of the rod end of the double-acting cylinder 11, and a sufficient mechanical force is applied to the piston of the double-acting cylinder 11, so that part of the pressure oil in the rod chamber is under the action of the external load is compressed into the single-acting oil cylinder 6, the single-acting oil cylinder 6 overcomes the spring force of the spring 28, and drives the transmission shaft 18 to drive the friction block 27 to the left and right sides under the transmission action of the transmission plate 17. At this time, the brake is released, so that The entire transportation system enters the working state, realizing the synchronous start of the system; under the continuous action of external force, the piston of the double-acting cylinder 11 will continue to move outward, and at this time the overflow valve 10 is opened under the action of sufficient liquid pressure , so that the hydraulic oil in the rod chamber of the double-acting cylinder 11 returns to its rodless chamber. At this time, the double-acting cylinder 11 itself forms a hydraulic circuit until all the remaining hydraulic oil in the rod chamber enters its rodless chamber. This process is In the process of converting the hydraulic pressure to the mechanical force, the whole conversion process is relatively stable, and the entire hydraulic system will not be paralyzed due to excessive external load. According to the actual working conditions, when the parking brake is started, the mechanical force acting on the double-acting cylinder 11 gradually disappears, and the spring 28 overcomes the hydraulic force of the single-acting cylinder 6 under the action of its own spring force, and passes The transmission effect makes the friction block 27 driven by the transmission shaft 18 be pressed against the guide rail to achieve the effect of braking. At the same time, the hydraulic oil in the single-acting cylinder 6 passes through the hydraulic pipeline Back to the rod chamber of the double-acting oil cylinder 11, and part of the hydraulic oil in the rodless chamber also returns to the rod chamber through the check valve 9, realizing the braking synchronization of the system.

Claims (6)

1. an on-off synchronous control rail-hanging type brake is characterized in that comprising synchronizing control and hydraulic lock mechanism; Synchronizing control comprises hand pump, selector valve, stop valve, first one-way valve, second one-way valve, relief valve, one-way cylinder, two-way cylinder; Linking to each other with the rod chamber of stop valve and two-way cylinder respectively of one-way cylinder into and out of hydraulic fluid port, the filler opening of stop valve links to each other with hand pump by selector valve, first one-way valve successively, and the filler opening of two-way cylinder links to each other with the oil outlet of this two-way cylinder by the relief valve and second one-way valve in parallel; The oil outlet of hand pump links to each other with the filler opening of selector valve through first one-way valve, and the return opening of selector valve links to each other with the fuel tank of hand pump, and stop valve links to each other with the oil outlet of selector valve by hydraulic pipe line; Hydraulic lock mechanism comprises earrings connecting plate, supporting frame, square rigid body, first bearing pin, second bearing pin, the 3rd bearing pin, driver plate, transmission shaft, brake pad, spring, spring stop, back shaft, nut, limiting board, roller, bearing; The earrings connecting plate is a square plate, and a circular hole is opened in the centre; The rodless cavity earrings of two-way cylinder is connected on the earrings connecting plate by first bearing pin; Two spacing holes are arranged on the limiting board, and this limiting board is located by connecting back shaft on supporting frame by first taper pin; Supporting frame is " U " type member, has welded two groups of earrings connecting plates in its bottom, the side's of being welded with rigid body in the middle of two groups of earrings connecting plates; Fang Gangti connects driver plate by second bearing pin, and driver plate connects transmission shaft by the 3rd bearing pin, and circular brake pad is installed on the transmission shaft by second taper pin; One-way cylinder is connected with driver plate by the 4th bearing pin, the spring force of spring can be passed to transmission shaft by driver plate.

2. on-off synchronous control rail-hanging type brake according to claim 1 is characterized in that spring stop is the steel plate that a kind of centre has circular hole.

3. on-off synchronous control rail-hanging type brake according to claim 1 is characterized in that back shaft is a kind of multidiameter shaft.

4. on-off synchronous control rail-hanging type brake according to claim 1 is characterized in that driver plate is a circular arc steel plate.

5. on-off synchronous control rail-hanging type brake according to claim 1 is characterized in that brake pad adopts high-abrasive material to process.

6. on-off synchronous control rail-hanging type brake according to claim 1 is characterized in that being connected with pressure gauge on two-way cylinder and oil circuit that one-way cylinder links to each other.

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