JPH0976907A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve both weight saving and durability of a switch for dissolving any problem on transportation business and also providing its durability for a long period use. SOLUTION: An action rod 3 is connected to tongue rails 2a, 2b and also this action rod is moved by means of an action cylinder 4. Thus constituted action rod 3 is provided with lock piece holding parts 5a, 5b and also a lock piece 7 is hooked on these lock piece holding parts so as to maintain the switching state of the tongue rails. Meanwhile, in order to release the lock pieces from the lock piece holding parts, a chain lock main cylinder MC is actuated so as to allow the lock pieces to retreat from the moving locus of the lock piece holding parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling machine for switching tongue rails using hydraulic pressure.

[0002]

2. Description of the Related Art Conventionally, a rolling machine disclosed in Japanese Patent Laid-Open No. 3-295901 is known, and this conventional rolling machine utilizes the driving force of an electric motor.
Therefore, the driving force of the electric motor is transmitted to the operation using a clutch, a plurality of gears, a cam and the like. A system in which various elements such as the electric motor, the clutch, the plurality of gears and the cam are integrated is provided.

[0003]

In the conventional turning machine as described above, since the respective constituent elements are integrated, the weight is inevitably heavy. Therefore, there is a problem that not only transportation problems occur but also installation work takes time. In addition, a large load acts on various elements for transmitting the driving force of the electric motor, which causes wear of gears, cams, and the like, which makes it unusable for long-term use. An object of the present invention is to provide a rolling machine having a structure capable of achieving weight reduction and improvement in durability.

[0004]

According to a first aspect of the invention, an operating rod connected to a tongue rail, an operating cylinder for moving the operating rod, a control valve for controlling the operating cylinder, and the tongue rail are connected. A lock with a lock piece holding part formed at a position corresponding to the tongue rail's localization position and inversion position together with the lock piece while stroking in the position range where it is linked to the lock piece holding part and released. A lock piece for holding the lock can in a normal position or an inverted position when linked to the piece holding portion, a lock cylinder for making the lock piece stroke, and a control valve for controlling the lock cylinder, It is characterized in that it is provided with an operating cylinder and a hydraulic pump that is a pressure source of the locking cylinder. The second invention is characterized in that the lock piece holding portion is a groove into which the lock piece fits.

A third aspect of the present invention is characterized in that a spring force in a direction of linking with the lock piece holding portion is applied to the lock piece. According to a fourth aspect of the present invention, while the lock piece holding portion is formed on the operation rod, the stroke is performed in a position range in which the lock piece holding portion is linked to or released from the lock piece holding portion, and when the lock piece holding portion is linked to the motion piece, the movement is performed. The present invention is characterized in that a lock piece for holding the fixed position or the inverted position is provided, a lock cylinder for moving the lock piece is provided, and a control valve for controlling the lock cylinder is provided. A fifth aspect of the present invention is characterized in that a spring force in a direction of linking with the lock piece holding portion is applied to the lock piece. A sixth invention provides two sets of a lock can, a lock piece, and a lock cylinder, respectively, and connects one set of lock cans to one of the pair of tongue rails and the other tongue rail. It is characterized in that the other set of lock cans is connected to.

A seventh aspect of the invention is characterized in that the tip of the tongue rail is in pressure contact with the side surface of the basic rail when the lock piece is linked to the lock piece holding portion.
According to an eighth aspect of the present invention, a control valve for controlling the operating cylinder and a control valve for controlling the locking cylinder are connected in parallel, and the pump valve and the control valve for controlling the locking cylinder are connected in parallel to each other in the passage process. Is characterized in that a pressure control valve is provided which opens only when the pressure of the above exceeds a certain pressure. Ninth
The invention is characterized in that each of the control valve for controlling the operating cylinder and the control valve for controlling the locking cylinder is an electromagnetic control valve, and a control circuit for electrically controlling these electromagnetic control valves is provided. A tenth invention is that the control circuit, immediately before releasing the linkage between the lock piece and the lock piece holding portion,
The step of driving the operating cylinder to exert a force on the tongue rail on the side opposite to the switching direction, and the locking cylinder to move the lock piece during this period to release the linkage with the lock piece holding portion. And a step of driving the operating cylinder for moving the tongue rail in the switching direction after the link between the lock piece and the lock piece holding portion is released. The eleventh invention is characterized in that a lock can, a lock piece, and a lock cylinder are provided in the casing, and the casing is directly fixed to the basic rail.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The tongue rails 2a and 2b are provided at the branch portions of the basic rails 1a and 1b, and the pair of tongue rails 2a and 2b always swing integrally. There is no movement in the tongue rails 2a and 2b as described above.
, But the operating cylinder 3 is connected to this operating rod 3.
Are linked. The operating rod 3 moves in the axial direction according to the operating direction of the operating cylinder 4, and the tongue rails 2a and 2b are switched along with the movement. A convex portion 5 is formed on the operating rod 3 configured as described above, one side of the convex portion 5 serves as one lock piece holding portion 5a, and the other side serves as the other lock piece holding portion 5b. A position detecting cam 6 is formed on the side surface opposite to the convex portion 5.

The operating rod 3 as described above is slidably held in the casing CD, and the casing CD has a lock piece 7 as shown in FIGS.
And a lock main cylinder MC is provided. The cylinder block 10 of the lock main cylinder MC is the side wall 8 of the casing CD.
It is slidably held by a pair of slide guides 9 suspended between a and 8b. That is, the cylinder block 1
0 has a pair of guide holes 11 formed therein.
The slide guide 9 is passed through. As shown in FIG. 8, the slide guide 9 thus configured includes a large diameter portion 9a and a small diameter portion 9b. The guide hole 11 also includes a large diameter portion 11a and a small diameter portion 11b. Therefore, the large diameter portion 11a of the guide hole 11 and the small diameter portion 9 of the slide guide 9 are
A space is formed in a portion corresponding to b. Then, a compression spring 12 is provided in this space portion, and normally, the action of the spring 12 keeps the cylinder block 10 in a position where it is pressed against the side wall 8a of one side of the casing CD, as shown in FIGS. ing.

The cylinder block 10 has a ram 1
3 is slidably fitted, one end of the ram 13 is brought into contact with one side wall 8a of the casing CD, and the other end is exposed to the pressure chamber 14 in the cylinder block. In addition,
The pressure chamber 14 is connected to a hydraulic pump P described later. Therefore, in the pressure chamber 14, the compression spring 1
When the pressure enough to overcome the spring force of 2 is introduced, the cylinder block 10 moves against the spring 12. In addition, once the pressure in the pressure chamber 14 is released, the cylinder block 10 becomes the spring 12
By this action, the normal position shown in FIGS. 8 and 9 is restored. Below the lock main cylinder MC as described above,
Although the operating rod 3 is held slidably, the cylinder block 10 is adapted to move in a direction orthogonal to the operating rod 3.

Below the lock main cylinder MC,
The guide groove 15 is formed, and the lock piece 7 is slidably incorporated in the guide groove 15. The lock piece 7 thus configured faces the operating rod 3 in the casing and is movable in a direction orthogonal to the operating rod 3. In other words, the lock piece 7 can be moved in the same direction as the cylinder block 10. A pin 17 is fixed to the upper surface of the lock piece 7, and the pin 17 is fitted in a recess 18 formed in the lower surface of the cylinder block 10. Therefore, the cylinder block 10 and the lock piece 7 move integrally. When the cylinder block 10 is in the normal position shown in FIGS. 8 and 9, the lock piece 7 projects into the movement locus of the convex portion 5 of the operating rod 3, and the cylinder block 10 moves against the spring 12. When the lock piece comes into contact with the side wall 8b side, the lock piece is retracted from the movement locus.

Now, when the cylinder block 10 is in the normal position and the lock piece 7 is in contact with one lock piece holding portion 5a side as shown in FIG. It is pressed against the side surface of one of the basic rails 1a and the traveling direction of the train is specified as the x direction. In addition, as shown in FIG. 5, when the lock piece 7 is in contact with the other lock piece holding portion 5b side,
The other tongue rail 2b is pressed against the side surface of the other basic rail 1b to specify the traveling direction of the train in the y direction. In any case, the lock piece 7 is replaced by the lock piece holding portion 5.
When contacting a and b, the tongue rail 2
The a and 2b are strongly pressed against the basic rails 1a and 1b. Since the reaction force of the pressure contact force of the tongue rails 2a, 2b acts on the operating rod 3, the pressure contact force between the lock piece 7 and the lock piece holding portions 5a, 5b also becomes strong. The position of the lock piece 7 is held by this pressure contact force.

A pair of lock cans 18 and 19 are provided in addition to the above-mentioned motion lock 3, and these lock cans 18 and 19 are provided.
Is connected to the tips of the tongue rails 2a and 2b. The lock cans 18 and 19 are slidably provided on the casings CS ₁ and CS ₂ as shown in FIGS.
The casings CS ₁ and CS ₂ are directly fixed to the main rails 1a and 1b. That is, the casing CS _1, CS _2, to form a groove 20 on one side thereof, the basic rail 1a in the groove 20, is inserted a lower surface 1b, the basic casing CS _1, CS ₂ with a bolt 21 It is directly fixed to the side surfaces of the rails 1a and 1b. And this casing CS ₁ , C
S ₂ is provided with lock auxiliary cylinders SC ₁ and SC ₂ having exactly the same configuration as the lock main cylinder MC. Therefore, each of the lock assist cylinders SC ₁ and SC ₂ has pins 22 and ₂ respectively.
The lock pieces 24 and 25 are linked to each other through the lock levers 3 and 3, and the lock pieces 24 and 25 are connected to the lock cans 18 and 1 respectively.
It is inserted into or pulled out of the lock piece holding grooves 26 and 27 of No. 9. Even by applying a compression spring 28, 29 to the locking auxiliary cylinder SC _1, SC _2, when eliminating the pressure in the pressure chamber 30, 31 of the locking auxiliary cylinder, the lock piece 24 and 25 lock piece holding groove It is pushed in the 26 and 27 directions.

Reference numeral SW ₁ in the figure is a limit switch for detecting the stroke end of the operating rod 3 at the localization position, SW
₂ is a limit switch that detects the stroke end of the inversion position of the operating rod 3, SW ₃ and SW ₄ are limit switches that detect the position of the operating rod 3, and SW ₅ and SW ₆ are limits that detect the position of the lock piece 7. Switches SW _{7 to} SW ₁₀ are limit switches that detect the positions of the lock pieces 24 and 25. Next, the hydraulic circuit will be described with reference to FIG.
The operating cylinder 4 includes a bottom side chamber 32 and a rod side chamber 3
3 and 3 are connected in parallel to the hydraulic pump P, and electromagnetic control valves 36 and 37 are connected to the parallel passages 34 and 35, respectively. This control valve 36, 37
Is also switched by an electric signal, but can be manually switched by pushing the push rods 38, 39. The electromagnetic control valves 36, 3 as described above
In the normal position shown in the figure, 7 cuts off the communication between the hydraulic pump P and the bottom side chamber 32 and the rod side chamber 33, and connects both chambers 32, 33 to the tank T. Now, when only one electromagnetic control valve 36 is switched from the illustrated normal position to the switching position, the operating cylinder 4 extends. On the contrary, when only the other electromagnetic control valve 37 is switched to the switching position, the operating cylinder 4 contracts.

The locking main cylinder MC and the locking auxiliary cylinders SC ₁ and SC ₂ are connected in parallel to the electromagnetic control valve 40, and the electromagnetic control valve 40 and the electromagnetic cylinder for controlling the operating cylinder are connected. The control valves 36 and 37 are connected in parallel to the hydraulic pump P. Then, sequence valves 42 and 43 which are pressure control valves are connected to a passage 41 which connects the hydraulic pump P and the electromagnetic control valve 40. The sequence valve 42 on the one side is configured to open only when the circuit pressure becomes equal to or higher than a certain pressure to supply the pressure oil to the locking cylinder side. Further, the other sequence valve 43 is configured to open only when the discharge pressure of the manual pump MP becomes equal to or higher than a certain pressure to supply the pressure oil to the operating cylinder side. The manual pump MP is used when the hydraulic pump P fails or loses power.

Now, a description will be given of a case where each of the electromagnetic control valves 36, 37 and 40 is operated without using a computer. As shown in FIG. 1, the tongue rails 2a, 2
When b is in the normal position, when it is switched to the inverted position shown in FIG. 5, the electromagnetic control valves 37 and 40 are switched to the open position. At this time, the pressure oil of the hydraulic pump P is supplied to the rod side chamber 33 of the operating cylinder 4, but the pressure oil is not supplied to the locking cylinder unless the sequence valve 42 is opened. Therefore, in this case, the operating cylinder 4
Only the moving member 3 operates to pull the operating rod 3 in the direction of the localization position, which is the direction of arrow 44 in FIG. When the operating rod 3 is pulled in the direction of the arrow 44 in this manner, the pressure contact force between the lock piece 7 and the lock piece holding portion 5a and between the lock pieces 24 and 25 and the lock piece holding groove 26 is released. The pressure is set so that the sequence valve 42 opens when the pressure of the operating cylinder 4 rises to the point where the pressure contact force is released. Therefore, as described above, the lock pieces 7, 2
The sequence valve 42 opens when the pressure contact force with respect to Nos. 4 and 25 is released and it is easy to move it. When the sequence valve 42 is opened, pressure oil is introduced into the pressure chambers 14, 30, 31 of each locking cylinder, so that the cylinders move against the springs 12, 28, 29 and the lock pieces 7, 24 are moved. , 25 and the lock piece holding portion 5a or the lock piece holding groove 26 is released (see FIG. 2).

After this release, if the electromagnetic control valve 36 is opened, pressure oil is also supplied to the bottom side chamber 32 of the operating cylinder 4. Therefore, the operating cylinder 4 expands due to the pressure receiving area difference between the bottom side chamber 32 and the rod side chamber 33, moves the operating rod 3 in the direction opposite to the arrow 44, and moves the tongue rails 2a, 2b in the inverted position direction. Move (see Figure 3). When the tongue rails 2a and 2b reach the inverted position, they are sufficiently pressed against the basic rails 1a and 1b (see FIG. 4). When the state of FIG. 4 is reached, the electromagnetic control valve 40 is returned to the normal position shown again. When the electromagnetic control valve 40 is returned to the normal position, the pressure chambers 14, 30, 31 of the lock cylinder communicate with the tank. Therefore,
The lock cylinder is moved by the action of the spring force of the compression springs 12, 28, 29 to push the lock pieces 7, 24, 25, link them with the lock piece holding portion 5b or the lock piece holding groove 27, and press the tongue rail. Keep the positions of 2a and 2b. Further, when the tongue rails 2a and 2b are moved from the inverted position to the localization position, the same steps as above are taken.

As described above, when the lock piece is released from the lock piece holding portion, the operating rod is moved in the opposite direction to weaken the pressure contact force between the lock piece and the lock piece holding portion. As compared with the case where the lock piece is pulled out forcibly while the force is being applied, the wear of those members can be reduced. Therefore, it is also advantageous in terms of maintenance. Not only that, but also the lock cylinder for pulling out the lock piece can be downsized, which contributes to weight reduction. In addition, the state where the lock piece is linked to the lock piece holding part is
Since the compression spring holds the spring force, even if the locking cylinder malfunctions, it has no effect on the tongue rail. When the hydraulic pump P fails, the manual pump MP may be driven, and even if there is an electrical failure, the electromagnetic control valves 36, 37, 40 are concerned.
Can also be switched manually. The configuration for manually switching the electromagnetic control valves 36, 37, 40 is shown in FIG.
As shown in 15. As is apparent from FIGS. 14 and 15, three cams 47 to 49 are provided on the shaft 46 that rotates integrally with the lever 45, and the electromagnetic control valve is manually switched by these cams.

It is also possible to switch each electromagnetic control valve 36, 37, 40 using a computer. When using a computer like this, the limit switch SW
_{1 to} SW ₁₀ for operation 3 and lock pieces 7, 2
The positions of 4 and 25 are detected. FIG. 12 shows this control circuit. That is, each limit switch SW ₁
~ SW ₁₀ is connected to the control circuit 50, and the control circuit 50 controls the electromagnetic control valves 36, 37, 40. A flow chart of this control is shown in FIG. 13, but its control form is the same as the above-mentioned control form, and therefore its details are omitted. In this embodiment, since the casings CS ₁ and CS ₂ holding the lock cans 18 and 19 are directly fixed to the side surfaces of the basic rails 1a and 1b, the relative positions of the lock cans and the basic rail may be affected by vibration or the like. Does not slip off. Therefore, even if it is used for a long period of time, its position holding function is not hindered.

[0019]

According to the present invention, since the operating can and the locking can are controlled by the hydraulic system, the operating can operating system and the locking can operating system can be separately configured. Therefore, the weight of each of these separate systems can be extremely reduced, and the installation work can be facilitated. Further, since it is a hydraulic system, the total weight can be reduced as compared with, for example, a conventional electric system. This is because a hydraulic system does not require a power transmission element such as a clutch, a speed reducer or a cam, unlike an electric system. Furthermore, since the spring force is applied to the lock piece and the lock piece is linked with the lock piece holding part by this spring force, even if the locking cylinder malfunctions, the tongue rail does not switch and safety is improved. It is excellent. Since the casing holding the lock can is fixed to the side surface of the basic rail, the relative position between the lock can and the basic rail does not change and the position holding mechanism can be maintained for a long time.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a relative relationship between a basic rail, a tongue rail, a motion can, a lock can and a mechanism for operating them, and is a view showing a state in which the tongue rail is kept in a normal position.

FIG. 2 is a schematic view showing a relative relationship between a basic rail, a tongue rail, a motion bar, a lock bar and a mechanism for operating them, in a state in which the tongue rail is kept in a normal position and a lock piece is released. Is.

FIG. 3 is a schematic diagram showing a relative relationship among a basic rail, a tongue rail, a movement can, a lock can, and a mechanism for operating them, and is a diagram showing a state in which the tongue rail is maintained during switching.

FIG. 4 is a schematic view showing a relative relationship between a basic rail, a tongue rail, an operating rod, a lock can and a mechanism for operating them, showing a state in which the tongue rail is kept in an inverted position and a lock piece is released. It is a figure.

FIG. 5 is a schematic view showing a relative relationship between a basic rail, a tongue rail, a movement can, a lock can, and a mechanism for operating them, and is a view showing a state in which the tongue rail is kept in an inverted position.

FIG. 6 is a plan view of a lock can and a casing holding it.

FIG. 7 is a sectional view showing a lock can and a casing holding the lock can, and is a sectional view showing a fixed state of the casing and the basic rail.

FIG. 8 is a sectional view of the operating cylinder in a plan view.

FIG. 9 is a sectional view of a side surface state of the operating cylinder.

FIG. 10 is a cross-sectional view of a side surface state in which the lock piece is released from the lock piece holding portion from the state of FIG. 9.

FIG. 11 is a hydraulic circuit diagram.

FIG. 12 is an electrical control circuit.

FIG. 13 is a flowchart diagram.

FIG. 14 is a plan view showing a mechanism for manually switching the electromagnetic control valve.

15 is a side view of FIG. 14.

[Explanation of symbols]

1a Basic rail 1b Basic rail 3 Motion 4 Motion cylinder 5a Lock piece holding part 5b Lock piece holding part 7 Lock piece 12 Spring 28 Spring 29 Spring P Hydraulic pump MC Locking cylinder SC ₁ Locking cylinder SC ₂ Locking cylinder 26 Locking Piece holding groove 27 Lock piece holding groove 36 Electromagnetic control valve 37 Electromagnetic control valve 40 Electromagnetic control valve 50 Control circuit

Front page continuation (72) Inventor Manabu Nakahara 2-4-1 Hamamatsucho, Minato-ku, Tokyo World Trade Center Building Kayaba Industry Co., Ltd. (72) Inventor Satoshi Yamaguchi 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Higashi Within Japan Passenger Railway Co., Ltd.

Claims (11)

[Claims] 1. An operating rod connected to a tongue rail, an operating cylinder for moving the operating rod, a control valve for controlling the operating rod, a fixed position and an inverted position of the tongue rail connected to the tongue rail. And a lock can with a lock piece holding part formed at a position corresponding to the position of the lock piece, while the stroke can be made in a position range in which the lock piece holding part is linked to or released from the lock piece holding part. A lock piece for holding the fixed or inverted position, a locking cylinder for moving the lock piece, a control valve for controlling the locking cylinder, and a pressure source for the operating cylinder and the locking cylinder. A rolling machine equipped with a hydraulic pump. 2. The rolling machine according to claim 1, wherein the lock piece holding portion is a groove into which the lock piece fits. 3. The rolling machine according to claim 1, wherein a spring force in a direction of linking with the lock piece holding portion is applied to the lock piece. 4. A lock piece holding portion is formed on the movement rod, while the stroke is made in a position range in which the lock piece holding portion is linked to or released from the lock piece holding portion, and the movement rod is localized when linked to the lock pithose holding portion. 7. A lock piece for holding the lock piece in a position or an inverted position, a lock cylinder for moving the lock piece, and a control valve for controlling the lock cylinder. The rolling machine described in any one of 1 to 3. 5. The rolling machine according to claim 4, wherein a spring force in a direction of linking with the lock piece holding portion is applied to the lock piece. 6. A lock can, a lock piece, and a lock cylinder are provided in two sets, and one set of lock cans is connected to one of the pair of tongue rails.
6. The rolling machine according to claim 1, wherein the other set of lock cans is connected to the other tongue rail. 7. The structure according to claim 1, wherein the tip of the tongue rail is in pressure contact with the side surface of the basic rail in a state in which the lock piece is linked to the lock piece holding portion. Rolling machine. 8. A control valve for controlling an operating cylinder and a control valve for controlling a locking cylinder are connected in parallel, and in the passage process between the hydraulic pump and the control valve for controlling the locking cylinder, the inside of the passage is controlled. The rolling machine according to any one of claims 1 to 7, further comprising a pressure control valve that opens only when the pressure reaches a certain level or higher. 9. A control valve for controlling an operating cylinder and a control valve for controlling a locking cylinder are electromagnetic control valves, respectively, and a control circuit for electrically controlling these electromagnetic control valves is provided. Item 9. The rolling machine according to any one of items 1 to 8. 10. The control circuit drives the operating cylinder to exert a force on the tongue rail on the side opposite to the switching direction immediately before releasing the linkage between the lock piece and the lock piece holding portion, During this time, the step of moving the lock piece to drive the lock cylinder to release the linkage with the lock piece holding portion, and after releasing the linkage between the lock piece and the lock piece holding portion, change the tongue rail switching direction. 10. The rolling machine according to claim 9, further comprising the step of driving an operating cylinder to move the moving cylinder. 11. A lock can, a lock piece, and a lock cylinder are provided in the casing, and the casing is directly fixed to the basic rail.
~ The rolling machine described in any one of 10.