JPH0484Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an automatic rail clearance measuring device that automatically measures the temperature of a rail and the rail clearance at that temperature.

(Prior technology) Railway rails expand and contract due to temperature changes, so even if the rail expands due to temperature rise, it cannot fully expand, and the end surfaces of adjacent rails are prevented from buckling, which causes the end faces of adjacent rails to bulge out laterally. A predetermined clearance is provided between the end faces of the rails, and adjacent rails are connected using joint plates and bolts.

When the rails are laid, the rails are laid with a predetermined clearance, but it is inevitable that the clearance will change with use. Conventionally, patrol monitoring has been carried out on a regular basis.

(Problems to be solved by the invention) However, patrol monitoring relies on eyes and senses, and it is particularly difficult to accurately grasp the relationship between temperature and the amount of free space.

In view of the current situation, the present invention has been developed by attaching a clearance sensor and a temperature sensor to an inspection frame that can run on rails, and towing the inspection frame along the rails by a motor car or the like. , by accurately measuring the temperature of the rail and the amount of play at that temperature, it attempts to provide useful data for correction of play.

(Means for solving the problem) A fixing member to which one end of the traction means is fixed is arranged on the upper surface of the central portion. Two movable members are provided below the fixed member, which are arranged symmetrically with a predetermined distance apart so that one end face faces each other. A spring receiver is provided on one side surface in the direction of one end surface of each movable member, a movement guide is provided on one side surface in the direction of the other end surface of the spring receiver, and a movement guide is provided on the other side surface of each movable member. When the movable member moves, the moving guide moves along one side or the other side of the fixed member. A tension spring is inserted between the spring receivers of the two movable members, and the other end of each movable member is coupled to the upper surface of the central portion of the cross-sectional and molded sleds, respectively. The inside vertical part of the cross section of the sled is set so as to be in contact with the inside surface of the head of the rail, and the horizontal lower surface is in contact with the rail tread. The intersection point of the shaped guide rods is connected to the lower part of a pin whose one end is fixed to the center of the one-way fixing member, and one end of one of the guide rods is connected to one of the sleds through the connecting member. The other end of the guide rod is attached to the upper surface of the movable member 7 in front of the connecting point, and the other end of the guide rod is attached to the upper surface of the other sled via another connecting member in front of the connecting point of the movable member 8. A pin is attached to the upper surface of the other sled in front of the joining point of the movable member 8 through a third connecting member, and the other end is attached to the upper surface of one sled in front of the movable member 7 through a fourth connecting member. Join. The distance between the connection point of the movable member of one sled and the connection point of the front connection member is equal to the distance between the connection point of the movable member and the connection point of the front connection member, and the distance between the connection point of the movable member of the other sled and the connection point of the front connection member The connecting member attachment points of and the rear connecting member attachment points are arranged symmetrically with those on one sled. The spring force of the tension spring inserted in the spring receiver is set by the spring so that the distance between the sleds is larger than the gauge via the movable member. A gap sensor consisting of a non-contact eddy current magnetic sensor is installed at a symmetrical position on the two sleds, and a non-contact thermometer is installed at a predetermined position on at least one of the sleds.

(Example) The present invention will be explained according to the example shown in FIGS. 1a to 4.

In Figures 1a to 2b, 1 is a rail;
2 and 2' indicate a pair of sleds. The cross section of the sled 2 is shaped like a mold, and the inside of the vertical part is in contact with the inside head side of the rail 1, and the lower surface of the horizontal part is in contact with the rail tread surface. Reference numeral 12 denotes a fixing member disposed perpendicularly to the rail 1, to which one end of an inverted Y-shaped traction means 13 is fixed.
Below the fixed member 12, movable members 7 and 8 are arranged symmetrically about the longitudinal centerline of the track. Opposing end surfaces of the movable members 7 and 8 are separated by a predetermined distance, and the other end of each is fixed to the upper surface of the central portion of the sleds 2 and 2'. Spring receivers 9, 10 are arranged symmetrically on one side surface of the movable members 7, 8 near the opposing surfaces.
A tension spring 11 is inserted between the spring receivers 9 and 10. Guide members 71 and 81 are symmetrically provided on one side of the movable members 7 and 8 in the direction of the sleds 2 and 2' from the spring receivers 9 and 10.
On the other side of the movable member 7 corresponding to the guide member 71 and the spring receiver 9, there are guide members 71' and 91 having the same configuration as the guide member 71, and on the other side facing the spring receiver 10 and the guide member 81 of the movable member 8. Guide members 101 and 81' having the same configuration as the guide member 81 are provided on the side surfaces.
The spring force of the tension spring 11 is transmitted to the movable members 7 and 8 via the spring receivers 9 and 10, displacing the sled 2 in the direction of arrow a and the sled 2' in the direction of arrow b.
Reference numerals 5 and 6 designate guide rods arranged to intersect in the shape of a shape, and are pin-coupled to the lower part of a pin 51 which passes through the center of the fixing member 12 and is fixed at the intersection thereof. One end of the guide rod 5 is pin-coupled to one end of the coupling member 3, and the other end of the coupling member 3 is coupled to a predetermined point 31 on the sled 2. The other end of the guide rod 5 is pin connected to one end of a connecting member 4', and the other end of the connecting member 4' is connected to a predetermined point 41' on the upper surface of the sled 2'. One end of the one-way guide rod 6 is connected to the connecting member 4
The other end of the connecting member 4 is pin-coupled to a predetermined point 41 of the sled 2', and the other end of the guide rod 6 is pin-coupled to one end of the connecting member 3'.
The other end of the connecting member 3' is connected to a predetermined point 3 on the upper surface of the sled 2.
1'. In this case, the distance between the pin connection point 31 on the sled 2 and the connection point of the movable member 7 is equal to the distance between the movable member 7 and the pin connection point 31';
1. Connection point of movable member 8 and pin connection point 41'
is the pin connection point 31 on the sled 2, the movable member 7
and the pin connection point 31', respectively. A clearance sensor 14 is installed at a predetermined location between the connecting point of the movable member 7 of the sled 2 and the connecting point 31' of the connecting member 3' so as to face the tread of the rail 1, and the movable member 8 of the sled 2' and the pin connection point 41' of the connecting member 4'.
Similarly, the free space sensor 141 is installed at a position symmetrical to the installation position of step 4. On the other hand, a temperature sensor 15 is installed at a predetermined location between the connecting point of the movable member 7 of the sled 2 and the pin connecting point 31 of the connecting member 3 so as to face the tread surface of the rail 1.

As the free space sensors 14 and 141, for example, a known non-contact type eddy current type magnetic sensor is used, and as the temperature sensor 15, for example, a known non-contact type infrared temperature sensor, that is, a temperature sensor emitted from the object to be measured is used. A sensor is used to measure the amount of infrared rays emitted by the sensor and thereby detect the temperature of the object being measured.

In this configuration, the vertical inner walls of the sleds 2, 2' are arranged between the inner sides of the heads of the rails 1, 1'.
In the free state, the spring force of the tension spring 11 displaces the sleds 2 and 2' in the directions a and b through the movable members 7 and 8, so that the distance between the sleds 2 and 2' becomes larger than the gauge. As mentioned above, when sleds 2 and 2' are placed on the track, the inner wall of the vertical part of sled 2 and the inner wall of the vertical part of sled 2' will correspond to each other by the spring force of the tension spring 11. It is pressed against the inner surface of the head of the rail 1. 1
On the other hand, the connecting members 3, 3' and 4, 4' are arranged on the sleds 2 and 2', respectively, in the above-mentioned positional relationship, and one of the connecting members 3, 3' and 4, 4' Since the two ends are pin-coupled to the corresponding ends of the shaped guide rods 5 and 6, warping 2, 2' due to the spring force of the tension spring 11 is prevented.
The displacements are carried out in a state where they are kept parallel to each other. Therefore, even if there is some error in the track, the vertical inner walls of the sledges 2 and 2' are always pressed against the inner surface of the head of the corresponding rail 1, and the horizontal lower surfaces are always pressed against the corresponding rail 1. It is possible to run parallel to the rails 1, 1 by sliding on the treads of the rails. Thereby, even when the sleds 2 and 2' pass through the turnout as shown in FIG. It is possible to drive. The traction means 13 is connected to a predetermined portion of a traction vehicle such as a motor car, and the measuring device according to the present invention is run along the rails 1, 1.
Meanwhile, when the clearance sensors 14 and 141 are running on the rail other than the rail joint, they face the rail tread symmetrically with a certain distance between them, so the magnetic fields emitted from the clearance sensors 14 and 141 are always constant. maintains a magnetic field. The amount of magnetism emitted from the free space sensors 14, 141 is converted into voltage by converters 17, 171 as shown in FIG. Play space sensor 1
4, 141, there is a gap 16 when the rails pass through the joint as shown in FIG. Change. The measured quantity in this case is converted into voltage by converters 17 and 171, then amplified by amplifiers 18 and 181, and stored in photocoder 21. By comparing the measured amount with the measured amount detected by the clearance sensor when passing over a rail other than a rail joint, the amount of clearance at the joint can be determined. On the other hand, the temperature of the rail measured by the temperature sensor 15 at the same time is
9 and is amplified by an amplifier 20 and then stored in a photocoder 21.

In this way, by pulling the measuring device according to the present invention along the rail, it is possible to detect the amount of clearance at the rail joint and the temperature of the rail at the time of measuring the amount of clearance, for example in the form of a chart. can.

(Effect of the invention) According to the invention, by running a towing vehicle on the rail, the amount of rail clearance at the rail joint and the temperature of the rail at the time of measuring the amount of clearance are automatically detected and measured. This allows you to accurately determine whether the rail clearance is appropriate or not, and by looking at the chart, you can easily determine which joint the measured clearance corresponds to. It can provide effective and accurate data for correcting the gap amount, and is far superior in terms of accuracy compared to conventional patrol monitoring using eyes and senses. In addition, the inspection frame will immediately detect any displacement in the gauge.
In accordance with this, measurements can be made with the sleds 2 and 2' always kept parallel, and furthermore, the turnout can be passed continuously without any hindrance.
Overall, it is possible to efficiently and accurately measure the clearance amount and rail temperature.

[Brief explanation of the drawing]

Figure 1a is a plan view showing an embodiment of the present invention;
Figure b is a front view of Figure 1 a, Figure 2 a is a perspective view showing the inspection frame in Figures 1 a and b, and Figure 2 b is the inspection frame according to the present invention passing through a rail junction. Figure 3a is a side view showing the positional relationship between the clearance sensor and the rail, Figure 3b is a side view showing the positional relationship between the temperature sensor and the rail, and Figure 3c is a side view showing the positional relationship between the clearance sensor and the rail. FIG. 4 is a front view showing the state in which the rail is passing through the rail joint, and a block diagram showing the relationship between the clearance sensor, the temperature sensor, and the recording section. 2, 2'... Sled, 3, 3', 4, 4'... Connecting member, 5, 6... Guide rod, 7, 8... Movable member, 9, 10... Spring receiver, 11... Tension spring , 12... Fixed member, 13... Traction means, 1
4,141... Spatial sensor, 15... Non-contact thermometer, 31, 31', 41, 41'... Pin connection, 51... Pin, 71, 71', 81, 81'...
...Movement guide, ...The distance between the connection point of the movable member and the connection point of the connecting member on the sled.

Claims (1)

[Scope of utility model registration request] A fixed member to which one end of the traction means is fixed to the upper surface of the central portion, and two movable members arranged symmetrically below the fixed member with a predetermined interval apart such that one end surface faces each other. A spring receiver is provided on one side surface in the direction of one end surface of each movable member, a movement guide is provided on one side surface in the direction of the other end surface of the spring receiver, and a movement guide is provided on the other side surface of the movable member. , a tension spring is inserted between the spring receivers of the two movable members, and the other end of each movable member is connected to the upper surface of the central part of the sled of the cross-sectional type and the type, respectively; The intersection point of the shaped guide rods is connected to the lower part of the pin with one end fixed to the center of the rod, and one end of one of the guide rods is connected to the movable member 7 of one of the sleds via a connecting member. On the top surface in front of the connection point,
The other end of the guide rod is attached to the upper surface of the other sled in front of the connection point of the movable member 8 via another connecting member, and one end of the other guide rod is attached to the upper surface of the other sled via a third connecting member. The other end is pin-coupled to the upper surface of the movable member 8 in front of the coupling point, and the other end is pin-coupled to the upper surface of the movable member 7 in front of one of the sleds via a fourth connecting member.
The distance between the connection point of the movable member of one sled and the connection point of the front connection member is equal to the distance between the connection point of the movable member and the connection point of the front connection member, and the distance between the connection point of the movable member of the other sled and the connection point of the front connection member The connection point of the connection member and the connection point of the front connection member are arranged symmetrically with those of the one sled, and the spring force of the tension spring inserted in the spring receiver is transmitted through the movable member by the spring force. The spacing between the sleds is set to be larger than the gauge, and clearance sensors each consisting of a non-contact eddy current magnetic sensor are set at symmetrical positions of the sleds, and at a predetermined position of at least one of the sleds. This is an automatic rail gap measuring device that is equipped with a non-contact thermometer.