JPS5947761B2 - Rail fastening bolt tightening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tightening device for rail fastening bolts on railway slab tracks or concrete sleeper tracks.

The rail fastening bolts may be misaligned due to irregularities in the uprightness of the bolts, irregular pitches, etc. Therefore, it is difficult to equip a trolley-type machine with multiple bolt fastening mechanisms and perform bolt fastening work at the same time. , for each individual bolt,
It is necessary to guide the corresponding bolt tightening stems to possible positions of the bolt chucks.

The present invention has been proposed to achieve such an object, and includes a traveling bogie running on rails, and a bogie mounted on both left and right sides of the bogie so as to be movable in the direction of the rails. A moving frame, a first hydraulic cylinder for moving the moving frame, a pair of support frames mounted on each of the moving frames so as to be movable in a direction perpendicular to the rails, and a pair of support frames for moving the supporting frames. the second of
a third hydraulic cylinder for moving one of the pair of support frames on the movable frame in the rail direction; a third hydraulic cylinder mounted on each of the support frames so as to be movable up and down; and a third hydraulic cylinder for rail fastening at the lower end. A stem equipped with a chuck for tightening bolts and nuts, a fourth hydraulic cylinder for raising and lowering the stem, a stem height position detecting member mounted on the support frame, a stem rail direction position detecting member, and the stem. The rail direction of the stem and the position detecting member in a direction perpendicular to the rail are mounted on the movable frame so as to be movable forward and backward from diagonally above the stem and directed downward from the stem. When the height position of the rail fastening bolt is detected in front of the rail direction and in the direction perpendicular to the rail by the height position detection member of the stem before the rail direction position detection member and the stem position detection member in the direction perpendicular to the rail, This invention relates to a rail fastening pole I/tightening device which is characterized in that it is configured to stop the operation of the second and fourth hydraulic cylinders.

Since the device of the present invention is configured as described above, after the traveling bogie has traveled to a predetermined position on the rail, the first hydraulic cylinder is actuated to move the left and right rails on the traveling bogie. When the movable frame disposed at the upper position is advanced and the position is detected by the rail direction position detection member of the stem mounted on the movable frame, the first hydraulic cylinder is stopped and the movable frame is moved. The system stops together with the support frame, and the axis of the stem mounted on the support frame is located at the bolt fastening position in the rail direction.

At this time, if the bolts facing each other on the left and right across the rail are deviated from the position perpendicular to the rail, the third hydraulic cylinder is actuated to move the pair of bolts on the moving frame. In the support frame, one support frame is moved forward and backward in the rail direction with respect to the other support frame, and the relative position of the stem mounted on both supports is adjusted to match the bolt position. .

Next, the second hydraulic cylinder is actuated to move the pair of support frames on the □ movable frame in a direction perpendicular to the rail, and the position detection member in the direction perpendicular to the rail of the stem mounted on each support frame When the position of the rail fastening bolt in the direction perpendicular to the rail is detected, the 20th hydraulic cylinder is stopped, each support frame is stopped, and the axis of the stem mounted on each support frame is aligned in the direction perpendicular to the rail. This is to stop the bolt at the bolted position.

After guiding the stem directly above the rail fastening port I, it is lowered by the fourth hydraulic cylinder,
The lowering position of the stem is determined by detecting the height position of the stem mounted on the support frame, the bolt is gripped by a chuck at the tip of the stem, and the bolt is tightened by the stem.

As described above, according to the device of the present invention, the planar position and height of the rail fastening bolt tightening stem mounted on the traveling bogie are regulated, and the center axis of the stem is positioned at the axis of the bolt, This can be gripped and tightened by a tip chuck, and according to the present invention, a plurality of rail fastening bolts disposed on each side of a pair of rails can be simultaneously and accurately tightened.

Since the member for detecting the position of the stem in the rail direction and the position perpendicular to the rail is mounted on the support frame so as to be movable forward and backward from obliquely upward to downward of the stem, during the detection operation, each of the above-mentioned detection By activating a hydraulic cylinder or a pneumatic cylinder in response to a signal, the member can be fed and set in one action.

The present invention also provides the above-mentioned rail fastening bolt tightening device, including a horizontal rotary plate having a projection attached to the stem;
A detection device that detects the rotational speed of the stem using the protrusion, and when the rotational speed of the stem matches a preset rotational speed, changes the rotational direction or issues an abnormal rotation warning signal to stop the rotational operation of the stem. It is characterized by having the following.

When tightening the track fastening bolts, the bolts are first loosened about two turns to ensure operational stability, such as by adding oil to the bolts, and then tightening them by regular rotation. It is necessary to count the number of rotations.

Furthermore, during the fastening rotation, it is necessary to count the number of rotations of the stem in case abnormal rotation occurs due to a bolt chuck error or the like.

However, in the present invention, as described above, a horizontal rotary plate having projections is attached to the stem, and a detection device is provided, and the detection device detects the rotational speed of the horizontal rotary plate and, by extension, the stem, through the projections. When the rotation speed of the stem matches the preset rotation speed, the rotation direction of the stem is changed, or an abnormal rotation warning signal is issued to stop the rotation operation, and the rail fastening bolt is properly tightened. It is possible.

In addition, during the tightening operation, the timer and this rotation detection device are linked, and when the rotation speed falls below a certain number within a certain period of time,
It has a feature that it is regarded as the end of the fastening operation.

The present invention also provides the above-mentioned rail fastening bolt tightening device,
The location of the abnormal stem portion on the slab to which the rail is to be fastened upon receiving the abnormality warning signal from the detection device.

The system is characterized by having a marking device configured to display the position of the stem, and after the traveling carriage has passed, the abnormal stem portion is clearly indicated so that repair work can be carried out quickly.

Hereinafter, the present invention will be applied to two locations on each of a pair of left and right rails, and the illustrated embodiment will be described in which a total of eight bolts, in which a pair of rail fastening bolts are installed oppositely across the rails, are tightened all at once. Let's discuss an example.

1 is a running bogie that runs on a pair of left and right rails laid on a slab track, and 2 is a power generation unit mounted on the running bogie 1, which generates the hydraulic pressure necessary for running the running bogie 1 and bolt fastening work. It is the source of

On the traveling carriage 1, there are two pairs of left and right moving frames 3, 3'.
A pair of left and right support frames 5,5. It is mounted so as to be movable perpendicular to the rail via a hydraulic cylinder 6.6'.

Thus, one of the supporting frames 5, 5.5', 5' of each pair is moved in the rail direction onto the moving frame 3°3' via the third hydraulic cylinder 7.7'. It is mounted so that it can be moved freely.

Each of the support frames 5, 5' has a rail fastening bolt tightening stem 8 equipped with a chuck for gripping the rail fastening bolt at its lower end.
, 8' are mounted so as to be freely raised and lowered via spline shafts and driven and rotated by a hydraulic motor 9, and a fourth double-acting hydraulic cylinder 10 for raising and lowering the stem.
．． 10' is mounted, and a connecting frame 1 is installed between the upper part of the cylinder 10.10' and the upper part of the stems 8 and 8'.
1 is attached to said fourth hydraulic cylinder 10.10'
By operating the stems 8, 8', the stems 8, 8' are raised and lowered.

The support frames 5, 5' have a lock for the hydraulic cylinder 12.
A stem height position detecting member 14 having a stem height detecting element 13 mounted thereon is disposed at the tip of the stem, and the detecting member 14 moves up and down following the stems 8, 8'.

Furthermore, a member 15 for detecting one position in the rail direction of the stem is mounted on the movable frames 3, 3', and a position detecting member 16 in a direction perpendicular to the rail is mounted on the support frames 5, 5', respectively. Detecting elements 19 and 20 are mounted on the tip of the rod of the hydraulic cylinder 1 18 or the air cylinder in the direction of the rail of the stem, or in the direction perpendicular to the rail, and the actuation of the cylinder 1 18 causes each of the above-mentioned The sensing elements 19, 20 are configured to extend obliquely upward and below the chucks of the stems 8, 8'.

A horizontal rotary plate 22 having a projection 21 is mounted on the upper end of the stems 8, 8', and the projection 21 is mounted on the connecting frame 11.
A detector 23 is disposed to count the number of rotations of the horizontal rotating plate 22 via the detector 23, and the detector 23 counts the number of rotations of the horizontal rotating plate 22 and issues a signal. Either change the direction of rotation of the stems 8, 8', or issue an abnormal rotation warning signal to stop the rotation.

This abnormal rotation warning signal is sent to the operator's room and its position is displayed, as well as the position of the abnormal stem on the slab as described below.

FIG. 5 shows a device for indicating the position of an abnormal stem on a slab. Reference numeral 24 indicates a hydraulic cylinder mounted on the support frames 3, 3', and a mark support device 26 is mounted on the lower end of the rod 25 to support the mark. Chokes 27 and 28 are mounted at the ends of each rod of a hydraulic cylinder or an air cylinder (not shown) built into the device 26.

When the stems 8, 8' descend, the hydraulic cylinder 2
4 is also activated, and the chokes 27 and 28 mounted on the mark support device 26 fall close to the slab surface, causing a failure in the fastening operation by the stems 8 and 8'. A hydraulic cylinder or an air cylinder built into the mark support mechanism 26 is operated to extend the rod, and the chokes 27 and 28 mark the front surface of the slab.

The chalks are separated by color, and after passing the first trolley,
The color is configured to reveal the abnormal operating position of the stem.

Next, the operation of this device will be explained.

The traveling bogie 1 is started, and a detector (not shown) mounted on the bogie 1 counts two or three rows of rail fastening bolts and sends a signal to cause the traveling bogie 1 to decelerate and stop.

At this time, the bogie 1 is stopped at a position such that the stems 8, 8' are slightly in front of the target port I.

Note that the stoppage of the truck 1'' is confirmed by a timer.

When the traveling bogie 1 automatically stops, the hydraulic cylinder 17 of the stem rail direction position detection member 15 is activated to extend the rod, and the detection element 19 attached to the tip of the rod is inserted into the lower end of the chuck of the stem 8, 8'. position, and actuates the first hydraulic cylinders 4, 4' to move the moving frames 3, 3'.
When the detection element 19 detects the bolt directly or a clear point relative to the bolt, the moving frames 3, 3' are stopped.

Next, by the same operation as described above, the detection element 20 of the position detection member 16 in the direction perpendicular to the stem rail is positioned below the chuck of the stems 8, 8', and the second hydraulic cylinder 6.6'
is actuated to move the support frames 5, 5' in a direction perpendicular to the rails, and when the detection element 20 detects the bolt directly or a clear point of relative position with the bolt, the support frames 5, 5' are moved. will be stopped.

In addition, if a pair of bolts facing each other across the rail are not perpendicular to the same rail but are offset in the direction of the rail, the third
The hydraulic cylinders 7 and 7' are operated to move the moving frames 3 and 3'.
Among the upper pair of support frames 5, 5.5', 5', one support frame is moved in the front and back direction relative to the other support frame,
Both support frames are moved and adjusted to relative positions corresponding to the relative positions of the two bolts.

When the planar positions of the stems 8, 8' are determined as described above, the fourth double-acting hydraulic cylinder 10°10'
is activated to lower the stems 8, 8', the height position of the bolt is detected by the stem height position detection member 14 set in advance, the stem 8, 8' is stopped, the height position is determined, and the height position is determined. The bolt is gripped by the tip chuck.

Next, the bolt is loosened and rotated once or twice using the stems 8 and 8', and after the bolt is lubricated as necessary, the bolt is tightened and rotated.

The bolt fastening operation is completed by interlocking the timer and the detector 23, and when the bolt fastening operation is completed when the number of revolutions falls below a certain value within a certain period of time, each stem 8, 8'
is returned to its original position.

Note that when a malfunction occurs in any of the stems, the malfunction of the stem is displayed on the slab as described later.

When the bolts are fastened by the stems 8, 8', the horizontal rotary plate 22 rotates as the stems rotate, and the rotation speed is detected by the protrusion 21 protruding from the rotary plate 22. When the rotation speed matches the preset rotation speed, the rotation direction is changed and the stem stops loosening and rotating the bolt, and the bolt is rotated to tighten, or an abnormal rotation warning signal is issued. Stem 8,8
′ is stopped.

This abnormality signal is sent to the operator's room and indicates the position of the stem that caused the abnormal rotational movement, and also displays the abnormal position on the slab as shown below.

When the stems 8, 8' descend as described above, the rod 25 of the hydraulic cylinder 24 also descends, and the chokes 27 and 28 attached to the rod end of the hydraulic cylinder built into the mark support mechanism 26 move at close range on the slab. descend to

At this time, when the abnormality signal is issued, a hydraulic seal built in the choke support mechanism 26 is activated, and a mark is marked on the slab by the choke 27, 28.
The abnormal rotational movement of the stems 8, 8 is clearly shown.

In addition, in this device, the hydraulic circuit for traveling of the traveling trolley,
The circuit is separate from the hydraulic circuit for tightening the stem, and the hydraulic circuit for tightening is configured so that an accumulator compensates for a temporary shortage of oil during the operation of tightening the stem.

On the other hand, the hydraulic circuit for travel uses a variable discharge pump,
The discharge amount is changed and decelerated by the rail fastening bolt count signal from the detector on the traveling bogie, and the oil is further removed by the switching valve.

The oil supply circuit to the K-pressure motor is interrupted to stop the traveling truck.

Furthermore, after the traveling trolley has stopped, it can be reliably stopped even on slopes, etc. by the stopping position maintenance force of the hydraulic motor itself and the stopping force of the mechanical brake mechanism, so that stable work can be performed.

The method of setting the rotation speed of the stem, the rotation direction conversion signal, and the transmission of the abnormal rotation warning signal will be explained next.

Table 1 below shows the process of setting the rotation speed and controlling the stem rotation.

As shown in Table 1, the bolt loosening rotation of the fastening shaft (stem) is started first.

As already mentioned, this is related to the previous operation, and starts with the signal that the previous operation has finished.

When the shaft rotates, a signal (pulse) is generated by the proximity switch located close to the top of the shaft as described above, and this pulse signal enters the calculator (comparator).

The calculator specifies in advance the number of rotations of the stem at which it will issue a signal.

For example, if you press the switch 5 so that a signal will be output when it rotates 5 times, this means that the terminal 5 forms a signal output circuit, and as soon as the circuit closes, the switch 5 will output a signal. The output terminal for the rotation speed is disconnected.

When the rotation reaches 5, the calculator sends an output signal to the solenoid valve.

The solenoid valve is performing a loosening rotation, but upon receiving an output signal from the computer indicating that five loosening rotations have been completed, the solenoid valve switches to reverse rotation, that is, tightening rotation.

When the tightening rotation becomes the tightening torque according to the hydraulic pressure,
Stop automatically.

It is also possible to link the timer and consider that the fastening is completed when the speed of the fastening rotation becomes less than a certain speed.

Next, abnormal rotation will be explained.

Abnormal rotation is determined by the number of tightening rotations, and for some reason (for example, a bolt mischuck), if the tightening rotation is 8 or more rotations, the pulse signal is calculated. The rotational speed is displayed in front of the operator as a digital signal using human power.

Therefore, the operator determines that the rotation speed is abnormal based on the display, and stops the rotation of that shaft.

When tightening and rotating, the number of rotations above a certain range is abnormal.This means that the normal bolt loosening rotation is about 3 to 5 rotations, and the tightening rotation is to retighten the loosened bolt, so it is more difficult than the loosening rotation. Since the number of rotations may be slightly higher or the same number of rotations, a rotation of more than 7 to 8 rotations is usually considered to be abnormal.

The operator is notified of the fact that the number of rotations is abnormally high by displaying the number of rotations in front of the operator. This is a warning signal for abnormal rotation.

The contents of the calculator, that is, the measurement of pulse signals and the output and display of this as a digital signal, are performed using well-known electronic measurement technology. Look at the display and determine that something is wrong.

For example, if the abnormality in the tightening rotation speed is 8-rotary tool-L, if switch 8 is turned on, output can be taken out from terminal 8.

As mentioned above, at other rotation speeds, no output is produced because the output terminal is not connected.

By switching the switch, switching is possible at any rotation speed.

Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments, and modifications of God's design may be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the rail fastening bolt tightening device according to the present invention, FIG. 2 is a side view thereof, and FIGS. 3 and 4.
The figures are a side view and a front view of the stem position adjustment mechanism, respectively, and FIG. 5 is a side view of a display device for indicating the position of the stem where abnormal rotational movement has occurred. 1... Traveling trolley, 3, 3'... Moving frame, 4, 4'... First hydraulic cylinder, 5, 5'
... Curved support frame, 6.6'... Second hydraulic cylinder, 7, 7'... Hydraulic cylinder of curved brush 3, 8, 8'.
... Stem, 10°10' ... Fourth hydraulic cylinder, 14 ... Stem elevation position detection member, 15 ... Stem rail direction position detection member,
16... Stem rail and perpendicular position detection member, 26... Mark support mechanism, 27...
Chalk, 28... Chalk.

Claims (1)

[Scope of Claims] 1. A traveling bogie that runs on rails, a movable frame mounted on both left and right sides of the bogie and movable in the direction of the rails, respectively;
and a first hydraulic cylinder for moving the movable frame, a pair of support frames mounted on each of the movable frames so as to be movable in a direction perpendicular to the rails, and a second hydraulic cylinder for moving the movable frame. a third hydraulic cylinder for moving one of the pair of support frames on the movable frame in the rail direction; a third hydraulic cylinder mounted on each of the support frames so as to be movable up and down; and a rail clamped at the lower end. a stem equipped with a chuck for tightening bolts and nuts, a fourth hydraulic cylinder for raising and lowering the stem, a stem height position detecting member mounted on the support frame, a stem rail direction position detecting member, and The system comprises a position detecting member in a direction perpendicular to the rail of the stem, and each of the position detecting members in the direction of the rail of the stem and in the direction perpendicular to the rail is movable forward and backward in the movable frame and the support frame, respectively, from diagonally above the stem to below the stem. when the rail direction, the direction perpendicular to the rail, and the height position of the rail fastening bolt are detected by the position detecting member in the direction perpendicular to the rail of the stem and the height position detecting member of the stem, respectively. a horizontal rotary plate configured to stop the operation of the fourth hydraulic cylinder and having a protrusion attached to the stem; the protrusion detects the rotation speed of the stem, and the rotation speed of the stem is set in advance; 1. A rail fastening bolt tightening device comprising: a detection device that issues a rotational direction change or abnormal rotation warning signal to stop the rotational operation of the stem when the rotational speed matches the rotational speed of the stem. 2. A traveling bogie that runs on rails, a moving frame mounted on both left and right sides of the same bogie and movable in the rail direction, and a first hydraulic cylinder for the movement, and each of the above-mentioned movements. A pair of support frames mounted on the frame so as to be movable in a direction perpendicular to the rails, a second hydraulic cylinder for moving the support frames, and a second hydraulic cylinder in the pair of support frames on the movable frame. a third hydraulic cylinder for moving one of the support frames in the rail direction; a stem that is mounted on each of the support frames so as to be able to rise and fall and has a chuck at its lower end for tightening bolts and nuts for tightening the rail; Fourth
a hydraulic cylinder, a stem height position detection member mounted on the support frame, and a stem rail direction position detection member,
and a position detecting member in a direction perpendicular to the rail of the stem, and each position detecting member in the direction of the rail of the stem and in the direction perpendicular to the rail moves forward and backward toward the movable frame and the support frame, respectively, from diagonally above to below the stem. The rail direction, the direction perpendicular to the rail, and the height position of the rail fastening bolt are detected by the rail direction position detecting member of the stem, the position detecting member in the direction perpendicular to the rail of the stem, and the height position detecting member of the stem. a horizontal rotating plate having a protrusion attached to the stem, configured to stop the operation of the first, second and fourth hydraulic cylinders, respectively; a detection device configured to detect, and a detection device mounted on each of the support frames to display the position of the abnormal stem portion on the slab to which the rail is to be fastened in response to an abnormal rotation warning signal from the detection device; A rail fastening Pol I/tightening device characterized by comprising a mark device configured to.