JPS646982B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic pawl device for a vehicle that performs a pawl action by remote control to prevent rolling of a vehicle stopped at a substantially fixed position.

As an automatic locking device for this type of vehicle,
This has already been proposed in Publication No. -7210. However, in the conventional device described above, the wedge is configured to perform an arcuate motion parallel to the rail tread while reaching the rail tread from the retracted state, so it is necessary for the wedge to reach the wheel tread without interference. The area in the longitudinal direction of the rail becomes larger. Therefore, when a wedge is installed between two wheels with a small distance between the axles, one wheel is interposed in the above area, which limits the effective length of the wedge. There is a problem that the equipment cannot be installed.

This invention was made in view of the above-mentioned conventional problems, and it reduces the area in the longitudinal direction of the rail necessary for the wedge to reach the wheel tread without interference, thereby creating a wedge with a predetermined effective length. The object of the present invention is to provide an automatic latch device for a vehicle that is configured so that it can be easily installed between wheels with a small distance between two axles, and that allows the same device to be applied regardless of the size of the gauge. do.

That is, in the automatic pawl device of the present invention, a guide shaft is bridge-fixed to the side of the rail parallel to the rail, one guide groove extending along the axis is formed on the circumferential surface of the guide shaft, and one guide groove is formed on the circumferential surface of the guide shaft. A reversing groove is provided in the circumferential direction at a position that is not interfered with by the groove, and the other guide groove is formed at the end of the reversing groove and having a linear groove continuously extending forward along the axis, and the guide groove is guided by the one guide groove. A sliding body that is capable of reciprocating movement, and a rocking body that is rotatable in the circumferential direction while being guided by an inverted groove of the other guide groove and capable of reciprocating while being guided by a straight groove are fitted onto the guide shaft, and these slide When the body and the rocking body are in the starting end retracted position, the body and the rocking body are connected to each other via a connecting rod with universal joints at both ends so that the slope slopes upward toward the front rocking body, and the thrust source is connected to the sliding body. A wedge is attached to the swinging body that extends to the side of the rail when it is in the starting end storage position, and the reversing groove portion is rotated in the circumferential direction of the guide shaft by the thrust of the sliding body during the propulsion operation of the thrust source. The wedge is inverted and erected on the rail tread surface, and the oscillator and the wedge are moved forward using the linear groove as a guide to insert the wedge between the wheel at the stop position and the rail, and when the thrust source moves backward, the wedge is inserted through the linking means. The swinging body and the wedge follow the sliding body and return to the position of the reversing groove, and using the reversing groove as a guide, they are reversed and returned to the starting end storage position without interfering with the connecting means. This is a summary.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view showing the stored state of the device according to the present invention, Fig. 2 is an overall side view of the same, and Fig. 3 is a plan view of the same. This device includes a base plate 3 fixed between fixed plates 2 and 2 attached to the rail 1 on the side of the rail 1.
installed on. That is, supports 4a and 4b are erected and fixed on the substrate 3, and these supports 4a,
A guide shaft 5 is fixed to the bridge between 4b in parallel with the rail 1 and at a position lower than the rail tread surface.

A series of one guide groove 6 is formed in the front-rear direction along the axis of the guide shaft 5 on the circumferential surface of the guide shaft 5 facing the rail 1, and the other guide groove 6 is located at a position where it is not interfered with by this one guide groove 6. A guide groove 7 is formed, and the other guide groove 7 has a guide shaft 5 at its rear end.
Inverted groove 7 formed over approximately 90 degrees in the circumferential direction of
a, and a straight groove portion 7b that extends forward (leftward in the drawing) along the axis continuously from the terminal end of the reversal groove portion 7a.
It is equipped with

The sliding body 8 is guided by one of the guide grooves 6 and fitted onto the guide shaft 5 so as to be movable back and forth in the front and rear directions. That is, as is clear from FIG. 4, the tip of the pin 8a, which radially penetrates the circumferential wall of the sliding body 8, faces one of the guide grooves 6.

The rocking body 9 is guided by the reversing groove 7a of the other guide groove 7 so that it can rotate in the circumferential direction of the guide shaft 5, and is guided by the linear groove 7b so that it can reciprocate in the front and back direction relative to the guide shaft 5. It is fitted externally. That is, as is clear from FIGS. 5 and 6, the pin 9a passing through the circumferential wall of the rocking body 9 in the radial direction faces the other guide groove 7.

The sliding body 8 is provided with an arm 10 that extends horizontally in a direction away from the rail 1, and the rocking body 9 is provided with an arm 10 that extends horizontally in a direction away from the rail 1.
A pair of arms 11 and 12 are provided that extend horizontally in a direction away from the rail 1 when the rail is located at the starting end of the rail.

The arms 10 and 11 are connected to a connecting rod 13, and universal joints 14a attached to both front and rear ends of the connecting rod 13.
14b, and the connecting rods 13 are arranged with an upward slope toward the front side, as shown by angle α in FIG.

The thrust source 15 is constituted by, for example, a fluid cylinder, and one end is attached to the support body 4c on the substrate 3.
Attach the tip of the piston rod 15a to the other end of the arm 10.
is connected to.

The arm 12 of the rocking body 9 has a wedge 1 on its front end surface.
6 is installed. The wedge 16 is attached to the arm 12 by a set member 17 that passes through an elongated hole 12a formed in the longitudinal direction of the arm 12, that is, in a direction parallel to the surface of the base plate 3. The bottom surface 16b is opposed to the side surface of the rail 1 (see FIG. 7).

As will be described later, the linking means 18 is for moving the swinging body 9 and the wedge 16 backward during the return operation of the thrust source 15, and is fitted onto the guide shaft 5 adjacent to the front side of the swinging body 9, and It consists of a reciprocating cylindrical body 18a that is guided in one guide groove 6 by a pin (not shown), and a tension spring 18b that is suspended between the cylindrical body 18a and the sliding body 8.

Next, the operation of the automatic pawl device configured as described above will be explained.

When the wedge 16 is to be reversed and erected on the tread surface of the rail 1 from the stored state shown in FIGS. 1 to 3, the thrust source 15 is operated to advance the piston rod 15a.

Since the thrust of the piston rod 15a is transmitted to the sliding body 8 via the arm 10, the sliding body 8 is connected to the guide shaft 5.
The arm 10 moves forward along one guide groove 6 as a guide.
are the universal joint 14a, the connecting rod 13, and the universal joint 14b.
A thrust is applied to the arm 11 and the rocking body 9 via the arm 11 and the swinging body 9.

In this case, since the pin 9a of the rocking body 9 faces the reversal groove portion 7a of the other guide groove 7, forward movement along the axial direction of the guide shaft 5 is prevented.
Since the connecting rod 13 is arranged with an upward slope α toward the front, a component force F' is generated in the horizontal thrust F, as shown in FIG. A moment M about the axis 5 acts on the rocking body 9 . Therefore, the rocking body 9 rotates in the circumferential direction of the guide shaft 5 as the pin 9a moves in the reverse groove portion 7a of the other guide groove 7 from the start end to the end end. Therefore, in advance, the opposing end surfaces 8 of each of the sliding body 8 and the rocking body 9 are
b, 9b, the distance L ₁ from the center of the guide shaft 5 to the point of application of the arm 11, and _the connecting rod 1.
By setting the length L 3 of ₃ to a dimension that is related to each other, when the rocking body 9 rotates approximately 90 degrees (corresponding to θ in FIG. 6), a wedge is formed as shown in FIG. 8. 16
is reversed and stands up with its bottom surface 16b touching the tread surface of the rail 1, and the opposite end surface 8b of the sliding body 8 comes into contact with the opposite end surface 9b of the rocking body 9, and the pin 9a of the rocking body 9 corresponds to the starting end side of the straight groove portion 7b of the other guide groove 7, that is, the branch position with the inverted groove portion 7a.

The thrust force F of the thrust source 15 that continues to act is directly transmitted from the sliding body 8 to the rocking body 9, and the sliding body 8
In response to the forward movement of the rocker 9, the rocking body 9 moves forward without rotating using the straight groove portion 7b of the other guide groove 7 as a guide, and the wedge 16 slides on the tread surface of the rail 1 to reach the wheel tread surface (not shown) in a fixed position. It is inserted between the rail 1 and the rail 1 to perform a pawl.

When the pawl is released from the pawl state and the wedge is retracted, the piston rod 1 of the thrust source 15 is
5a is moved backward to apply a backward force shown by arrow F'' in FIG. 8 to the sliding body 8. In this way, the backward force
When F'' acts on the sliding body 8, the sliding body 8 is guided by one guide groove 6 and retreats, and the retreating force is transmitted to the rocking body through the linking means 18 consisting of the spring 18b and the cylindrical body 18b. 9.

The spring 18b has a spring force strong enough to cause the rocking body 9 to move backward using the linear groove 7b of the other guide groove 7 as a guide, so that it follows the backward movement of the sliding body 8. The rocking body 9 retreats, and the wedge 16 retreats while sliding on the tread surface of the rail 1.

By the above-mentioned backward movement, the sliding body 8, the swinging body 9 and the wedge 16 return to the positions shown in FIG.
By approaching the end of , the swinging body 9 is prevented from retreating, and from then on, only the sliding body 8 retreats.

When the sliding body 8 further retreats from the state shown in FIG.
Retraction force caused by the inclination angle β of the connecting rod 13
A moment M' about the guide shaft 5 acts on the oscillator 9 due to the component force F of F'', and the pin 9a of the oscillator 9 moves the reversing groove 7a of the other guide groove 7 from the end to the start end. Therefore, the rocking body 9 rotates in the circumferential direction of the guide shaft 5 and is retracted together with the wedge 16 to its original position as shown in FIG. 1, and at the same time, the sliding body 8 also returns to the position shown in FIG.

In the above embodiment, the linking means 18 is connected to the cylindrical body 18a which is adjacent to the front side of the rocking body 9 and is externally fitted on the guide shaft 5 so as to be reciprocally movable, and between the cylindrical body 18a and the sliding body 8. Although the connecting means 18 is not limited to that of the above embodiment, for example, as shown in FIG. 9a, the connecting means 18 may be a plate-shaped elastic member. 18, and its proximal end 18c is connected to the sliding body 8.
The curled portion 18e is formed at the free end 18d, and the entire length lx is attached to the opposite end surface 8b of the sliding body 8.
The length is set so that the curled portion 18e can engage with the tip end surface of the oscillator 9 when the opposite end surface 9b of the oscillator 9 comes into contact with the opposite end surface 9b of the oscillator 9, and the free end 18d is always directed in the direction of the guide shaft 5. It may also be configured to be biased. That is, while the pin 9a of the rocking body 9 faces the straight groove portion 7b of the other guide groove 7, the curled portion 1
Since the slider 8e maintains the above-mentioned engaged state, the slider 8
The swinging body 9 can be moved backward following the backward movement of the swinging body 9, and as shown in FIG.
As the sliding body 8 moves backward after reaching the point in time, the free end 18d of the connecting means 18 bends in a direction away from the guide shaft 5, disengaging the curled portion 18e, and moving the sliding body 8. only retreats. Furthermore, since the wedge 16 is attached to the arm 12 by a set member 17 that passes through a long hole 12a formed in the arm 12, by moving the wedge 16 using the long hole 12a as a guide, the tread surface of the shaft 1 can be moved. The bottom surface 1 of the wedge 16 depending on the wear of the
6b can be adjusted to properly contact the tread surface of the rail 1.

As explained above, according to the present invention, the wedge stored on the rail side is rotated in the circumferential direction of the guide shaft to be positioned on the rail tread and slid on the rail tread to connect the wheel tread and the rail. Since the pawl is inserted between the wheels, the area in the longitudinal direction of the rail required for the wedge to reach the wheel tread without interference can be restricted to a smaller area than before, and the distance between the two axles can be reduced. The wedge can be easily installed between wheels that are set to be small, and furthermore, the wedge can be placed on the side of the rail in parallel with the rail, so the same device can be applied as is regardless of the size of the rail.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a stored state of an embodiment of an automatic pawl device according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a line A-A in FIG.
5 is a partial sectional view showing the relationship between the guide shaft and the rocking body, FIG. 6 is a sectional view taken along line B-B in FIG. 5, and FIG. 7 is a sectional view taken along line C-C in FIG. 2. figure,
FIG. 8 is a perspective view showing the wedge placed on the rail tread, and FIGS. 9a and 9b are plan views showing other embodiments of the connecting means. DESCRIPTION OF SYMBOLS 1... Rail, 5... Guide shaft, 6... One guide groove, 7... Other guide groove, 7a... Inversion groove part, 7
b... Straight groove part, 8... Sliding body, 9... Rocking body,
13... Connecting rod, 14a, 14b... Universal joint,
15... Thrust source, 16... Wedge, 18... Connection means.

Claims (1)

[Claims] 1. A guide shaft is fixed to the side of the rail parallel to the rail, one guide groove extending along the axis is formed on the circumferential surface of the guide shaft, and a guide groove is formed in the circumferential direction at a position where it will not be interfered with by the one guide groove. The other guide groove is formed with a reversing groove portion and has a straight groove portion continuously extending forward along the axis at the end of the reversing groove portion, and a sliding body that is reciprocally movable guided by the one guide groove and the other A rocking body that can rotate in the circumferential direction while being guided by the reversal groove of the guide groove and can reciprocate while being guided by the linear groove is fitted to the guide shaft, and the sliding body and the rocking body are in the starting end storage position. At the same time, the two are connected to each other via a connecting rod having a universal joint at both ends so that the slope is upward from the sliding body to the rocking body, and a thrust source is connected to the sliding body, and the rocking body is placed in the starting end retracted position. At some point, a wedge extending to the side of the rail is attached, and the thrust of the sliding body during the propulsion operation of the thrust source rotates the rocking body in the circumferential direction of the guide shaft using the reversing groove as a guide, thereby moving the wedge to the rail tread surface. The oscillating body and the wedge are moved forward using the linear groove as a guide, and the wedge is inserted between the wheel tread at the stop position and the rail. The automatic ratchet device for a vehicle is configured such that the rocking body and the wedge follow the movement and return to the position of the reversing groove, and using the reversing groove as a guide, reverse and return to the starting end storage position without interfering with the linking means.