Therefore, we have improved the original hydraulic spring rail clamp. The working process of the original hydraulic spring clamp is its hydraulic principle. The component 910 in the improvement of the clamp is realized by the driver's operation. 2. Superimposed hydraulic control check valve 3. Wet electromagnetic reversing adjustment 4. Fine boring device 5. Pressure 6 oil pump 7. The coarse filter relief valve to the relaxed position, the electromagnetic reversing valve 3 moves to the right, and the oil pump 6 works. The hydraulic oil is pumped out of the oil tank, through the filter 74, the electromagnetic reversing valve 3, and the superimposed hydraulic control check valve 21 simultaneously opens the hydraulic control check valve 2, enters the upper chamber of the cylinder 1, and pushes the piston to move the cylinder downward. 1 The lower chamber oil passes through the hydraulic control check valve 2; the electromagnetic reversing valve 3 returns to the oil tank, and when the cylinder piston moves downward, the elastic force of the spring and the matching force of the rail clamp are overcome. The clamps are opened by the linkage mechanism, and the clamp is in a relaxed process. When the relaxation limit is reached, the limit switch is forced to generate a signal for the stroke limit switch, the system is powered off, the oil pump 6 stops working, the electromagnetic reversing valve 3 returns to the neutral position, and the hydraulic control check valve 2 is before the oil circuit. The pressure is zero. The hydraulic control check valve 2 is locked, the cylinder 1 is locked, the clamp is kept in a relaxed state, and the relaxation process is stopped by the downward movement of the cylinder, so that the spring is pressed and the fitting is raised. The liquid energy is converted into the potential energy of the elastic yellow and the counterweight. For the clamping action of the rail clamp 2, the driver controls the clamp control switch to the clamping position, the electromagnetic reversing valve moves to the left, and the oil pump works at the same time.

The oil passes through the filter electromagnetic reversing valve, and the hydraulic control check valve enters the oil, cavity, and pushes the piston to move under the joint action of the spring elastic counterweight pressure. The potential energy of the spring and the counterweight is released, and the liquid pressure is small, the oil The pressure is lower and the upper chamber oil is hydraulically controlled by one-way, and the electromagnetic reversing valve flows back to the oil tank. Through the linkage mechanism, the two clamps of the rail clamp are closed. At this time, the clamp is in the clamping process and reaches the clamping limit. When the position is set, the limit switch is a signal that the travel limit switch is forced to produce the squatting action, the system is powered off, the oil pump 6 stops working, the electromagnetic reversing valve 3 returns to the neutral position, and the hydraulic control check valve 2 has zero oil pressure before. The hydraulic control check valve 2 is locked, the cylinder 1 is locked, the clamp is kept clamped, and the clamping process stops the clamp rail by the gravity clamping clamping force of the ramp 2 the original hydraulic spring clamp Failure analysis From the working process of the rail clamp, the key to the clamping failure of the rail clamp is that the clamping action is completed by the clamping limit switch. The clamping stroke is fixed. Due to the existence of the track width dimension error, Clamping failure or clamping in the equipment hall is excessively damaged. Pressure relay 10. Anti-blocking relay 1 The rail clamp is relaxed. The driver will clamp the rail clamp control switch to the standard track width of the rail clamp. The elastic modulus of the steel is 2103. According to the mechanical formula of the village material, the rail is deformed by the compression force during clamping. The body is 1 brother 4 and the juice is 1.5. Very small, negligible when designing the clamping jaw distance, so the clamping jaw distance corresponds to the theoretical track width. When the actual width dimension of the track is less than the theoretical width dimension of 78, the clamp cannot be effectively clamped due to insufficient clamping stroke; when the actual width dimension of the track is larger than the actual width dimension 8 of the theoretical track, the clamp clamp will pass. The actual situation that causes the damage of the rail clamp is 3, when the equipment is in position 1, the rail clamp can reliably clamp the rail, and when the equipment is in position 2, the two key ports are taken and the track is lost. 2,1殓, that is, although the rail clamp is in the clamped state but the clamp is not tight, the clamp clamp clamp limit switch has been actuated.

Through the measurement of the walking track, it is found that the width of the track is seriously out of tolerance due to the manufacture of rust, etc. The maximum error is 6,1, which is completely reflected. The distance of the design clamp is corresponding to the theoretical track width, such as the orbit. The wider position is the adjustment position according to the set limit position, then when the large machine is in the narrow clamping and tightness of the track, the operating room has the clamping device in the clamping state; if the rail is near the narrower, the limit is adjusted. Position, when the large machine is in the wide position of the track, because the stroke of the rail can not reach the set vertical, the clamping limit is not working. The system considers long clamping and straight clamping, the oil pump works, the system maintains 1 pressure 1 The temperature is high, the oil pump and other components are easily damaged. In addition, when the equipment is in position 2, the clamping limit test is removed by the rail clamp. Even if the cylinder is reached, the big trip. The rail clamp still can't clamp the rail, and there are still two sides on both sides. From this point of view, the distance between the two jaws of the clamping arm is too large and needs to be corrected. The improvement of the 3-liquid spring rail clamp and its effect are based on the above analysis. the study. Improvements to both sides of the rail clamp 1 The constant clamping stroke is the follow-up clamping stroke, that is, the clamping force is maintained + changed, so that the clamping stroke varies with the track width dimension, from the rail clamp design The principle is to solve the problem that the clamp can not adapt to the change of the track width. The method of changing the clamp limit switch to the hydraulic pressure relay can be used to generate the electric slogan when the oil pressure reaches the specified value. The pressure relay kind is a small electro-hydraulic control unit that converts the pressure number of the oil into an electric signal. When the pressure of the oil reaches the pressure of the pressure relay, the signal is sent to control other components, and when the clamp is working. The system pressure is between 3 cubits and 3 degrees. At this time, the force is followed by the + + + action; + the rail clamp jaws clamp the track, because the cylinder does not move and the pressure in the lower chamber of the cylinder rises, at this time the pressure relay spring expands; When it reaches 12, 1, the pressure relay sends a signal, so that the electromagnetic reversing valve 3 is turned off, the electromagnetic reversing valve 3 is in the neutral position, the system pressure is zero, and the cylinder 1 is locked by the pilot operated check valve 2. To reliably clamp, When the clamping action is completed, the system has been shut down and the power is set to 12,13 because the clamping force is set to the working pressure of the clamping process. Due to the spring force of the spring and the gravity of the counterweight, the cylinder is in the clamping stroke. The medium pressure is relatively small at 03殪1. It can be considered that the jade force exceeds 31汕 and the cylinder has reached the end of its stroke, so the pressure rise system has a rated pressure of 141. Therefore, the card force relay force setting value can be considered at 314MPa2. The clamping is reliable. The value of the specific method is to remove the clamping limit switch. In the system, 1 is installed. 1 The main purpose of adding the anti-blocking relay 10 to the 9 of the company's magazine-type pressure relay 2 is to The fine filter 4 is easy to block due to oil pollution during use, and the outlet pressure of the pump rises when the blockage is blocked, and the anti-blocking pressure relay can alarm in time to avoid the failure of the rail clamp. 2. The problem that the clamp of the rail clamp is too large can be By increasing the length of the strut 31 and the thickness of the jaws to solve the operability of the solution, it is finally decided that the thickness of the tongs is measured by the gap between the jaws and the track, and the rail is clamped. Reliable and effective clamping It is not to be frictionally connected with the track during walking. The clamp clamp passes through the welding jaw plate, which reduces the gap between the jaw and the track. When the stroke of the clamp cylinder is constant, the clamp can be reliably clamped. Tight track this improvement. The liquid music spring clamp can meet the requirements of the working condition of the track width, improve the safety of the rail clamp, and eliminate the major hidden dangers of the safe operation of the reclaimer.

Received date 2002

Material characteristic: Using high quality aluminum extruded shutter profiles, multi-layer painting or film layer surface have excellent scratch resistance function, not decay, wearable and anti-collision.Nice white profiles, accepting mass customization according to users requirements(light gray, brown, cream, wood, fused, sand color and light sand color ,etc.)