JPH0636080Y2 - Intermittent propulsion drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an intermittent propulsion drive device, and particularly for intermittently towing or pushing a heavy object along a traveling path by a reaction force with a ground surface. The present invention relates to a useful reaction force type intermittent propulsion drive device.

(Prior Art) Conventionally, as a method for carrying heavy objects on the ground, a heavy object is made to travel on a traveling rail or a slide plate by a plurality of carriages or support jacks, or a heavy object is placed on a plurality of air film type carrying units. This transport unit is supported by forming an air film of pressurized air between it and the slideway, and pushing or pulling it with a reaction propulsion machine using a hydraulic jack or hydraulic cylinder. I am trying to drive it. In particular, in the case of an ultra-heavy material such as a large concrete caisson, it is difficult to drive the wheels of the trolley to rotate, so it is possible to intermittently move the reaction propulsion machine by repeatedly extending and retracting.

In this case, as the reaction force intermittently moving propulsion machine, one end of a propulsion drive cylinder device is connected to a heavy load object through a normal shaft support pin or a spherical bush, and the other end of the cylinder device is similarly operated. There is known a structure in which it is connected to a clamping cylinder device via a shaft support pin or a spherical bush, and a rail along a traveling path is sandwiched by a clamp cylinder device via a lever or the like to perform clamping scooping. Further, for example, as shown in Japanese Patent Publication No. 57-12770, the base ends of the moving actuators are connected to the front and rear parts of the heavy object supporting jack, and the jack and the actuator are mounted on a movable slide plate. Engaging the locking body at the tip of the operating rod of the actuator with a rack formed on the slide plate, and by operating the actuator, the jack for supporting the heavy object with the engaging portion of the rack and the locking body as a support point. A structure in which the stroke is intermittently moved is known.

(Problems to be solved by the invention) In the conventional reaction force type moving propulsion device, the method in which the rail is sandwiched by the clamping cylinder device is slipped because it is simply sandwiched by the lever or the like connecting the rail to the cylinder operating part from both sides. However, there is a problem that the propulsion operation is uncertain. Further, both ends of the propulsion drive cylinder device can rotate only up and down in the case of the pin connection, and therefore cannot bend along the curved road which is the traveling road.
The range of vertical relative displacement is also limited. Even in the case of spherical bushes on both ends, the relative displacement in the vertical and lateral directions is usually limited to 15 ° or less, and curved conveyance with a small radius is impossible.
In the heavy object moving device of Japanese Patent Publication No. 57-12770, a rack-shaped member having a predetermined pitch must be laid along the traveling path, and the rack-shaped member is provided via a support shaft laterally protruding from the cylinder operating rod. There is also a problem in terms of strength because the locking bodies of and are connected. Further, the intermittent movement stroke is regulated by the pitch of the rack-shaped member, and there is a problem in that the setting of the start of conveyance and the stop of the heavy object at a fixed position at the end of conveyance. Also in this structure, similar to the above-mentioned cylinder clamp system, the relative displacement in the lateral direction between the conveyed object and the drive unit is impossible.

(Means for Solving the Problems) An intermittent propulsion drive device according to the present invention includes a propulsion drive cylinder device connected to a driven body through a first universal joint, and the other end of the propulsion drive cylinder device. A clamp cylinder device connected via a second universal joint, a clamp member arranged between the clamp cylinder device and a rail along the traveling path, and engaging with a flange portion of the rail; A wedge member that is held by a cylinder of a cylinder device and an actuating rod and that wedge-engages with the clamp member, wherein the wedge member and the clamp member are wedge-shaped due to a contracting operation of the clamp cylinder device; The flange part of the is clamped by vertically pressing it, and the propulsion drive cylinder device operates in this state. It is driven and driven.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view of an intermittent propulsion drive device according to an embodiment of the present invention, and FIGS. 2 and 3 are a plan view of FIG. 1 and a rear view as seen from arrow A, respectively. The intermittent drive device of the present invention is useful for moving and propelling an air film type transportation device for general heavy objects or super heavy items such as concrete caisson, but is not necessarily limited to such an air film type transportation device. , It can be used as a general heavy-weight supporting jack or a moving propulsion device for a supporting carriage.

A rail 2 having flange-like treads protruding on both sides along the conveying direction of a heavy object, an ultra-heavy object or its support 1 (either straight path or curved path is acceptable) is laid. A cylinder end portion of a propulsion drive cylinder device 4 is connected to a rear end of the support base 1 by a first universal joint 3. The tip of the operating rod 5 of the propulsion drive cylinder device 4 is connected to the bracket 7 by a second universal joint 8. These first and second
The universal joints 3 and 8 each have a structure capable of large relative rotation in the vertical and horizontal directions. Specifically, the tip of the actuation rod 5 of the propulsion drive cylinder device 4 is a fork end 15 which is vertically branched, and the horizontal shaft 16 is inserted into the branch portion of the fork end 15 and the fork end 15 and the horizontal shaft are inserted. 16 and 16 are rotatably connected to each other by a vertical pin 17, and a horizontal shaft 16 is rotatably supported on both sides of the bracket 7. The connection between the heavy load support 1 and the cylinder base of the propulsion drive cylinder device 4 has substantially the same structure as described above, and a description thereof will be omitted.

A pair of opposed L-shaped wedge members 10 and 11 extending to the lower side of the cylinder device 6 are fixed to the base of the cylinder 15 of the clamping cylinder device 6 and the operating rod 13 of the device 6. The wedge members 10 and 11 extend below the cylinder 15 so as to face each other in the rail longitudinal direction, and the upper edges of the extending portions are tapered.

The clamp member 9 as a whole has a U-shape that straddles the rail 2, and the lower end of the clamp member 9 is an L-shaped hook portion that engages with the lower side (back portion) 2a of the flange-shaped tread surface of the rail 2. 9a
have. Further, the back side of the upper surface 9b of the clamp member 9 is a taper portion (wedge surface) 10a, 1 of the extending portion of the wedge member 10, 11.
It is tapered so as to engage with 1a, and further has window holes 12 and 14 formed in front and rear portions in the rail longitudinal direction on the upper surface of the clamp member, and the L-shaped wedge members 10 and 11 are formed in the window holes 12 and 14, respectively. The vertical portions 10b, 11b are inserted with a certain margin in the rail longitudinal direction. A plate 20 is arranged between the wedge members 10 and 11 and the upper surface of the rail 2. Although the clamp member 9 engages with the rear side of the flange portion of the rail 2, there is a slight gap in the vertical direction with respect to the rail 2. Wedge member 10,1
1 moves within the margin of the window holes 12 and 14 of the upper surface 9b of the clamp member 9 due to the expansion and contraction operation of the clamp cylinder device 6, and when the clamp cylinder device 6 contracts, the wedge members 10 and 11 move. The tapered portion and the taper surface on the back side of the upper surface of the clamp member 9 are engaged with each other, and the wedge action pushes the clamp member 9 upward with respect to the rail 2, and at the same time, the wedge members 10 and 11 interpose the lower plate 20. Press the top surface of the rail flange. When the clamp cylinder device 6 extends, the engagement between the tapered portions of the wedge members 10 and 11 and the tapered surface of the clamp member 9 on the back side of the upper surface is released. In FIG. 1, the position B is the position where the wedge members 10 and 11 are closest to each other, and the position C is the position where the wedge members 10 and 11 are farthest apart from each other.

In order to move the heavy load support 1 with such a device, first, when the propulsion drive cylinder device 4 is contracted, the clamping cylinder device 6 contracts, that is, when its operating rod 13 contracts into the cylinder 15, The members 10 and 11 are pushed in a direction in which they approach each other while wedge-engaging with a tapered surface on the back side of the upper surface of the clamp member 9, and the tapered portions 10a and 11a push the clamp member 9 upward with respect to the rail 2,
As a result, the L-shaped hook portion 9a at the lower end of the clamp member 9 presses the flange portion of the rail 2 from below. At the same time, the wedge members 10 and 11 are pushed downward by the tapered surface on the back side of the upper surface of the clamp member 9, and press the flange tread surface of the rail 2 via the plate 20. In this way, the flange portion of the rail 2 is strongly clamped by the hook portion 9a of the clamp member 9 and the plate 20 below the wedge members 10 and 11 to be in a clamped state. In this state, the propulsion drive cylinder device 4 expands,
The heavy load support 1 is pushed out in the direction of arrow F by the stroke. When the operating rod 13 of the clamping cylinder device 6 extends at the stage where the propulsion drive cylinder device 4 is fully extended, both wedge members 10 and 11 move in the direction of separating from each other, and the clamp member 9 moves downward and the hook portion 9a. And the rail flange portion are disengaged, and the clamp is released. After this,
When the propulsion drive cylinder device 4 contracts, the entire clamping cylinder device 6 advances with respect to the heavy object by the stroke, and the clamping cylinder device 6 is actuated again at the advanced position to bring it into a clamped state. By repeating such an operation, the heavy object is pushed intermittently. In addition,
The phantom line position in FIG. 1 represents the position before the clamp cylinder device 6 moves by one stroke of the propulsion drive cylinder device.

In the above-described embodiment, the present driving device is installed on the rear side of the heavy object support base 1 in the conveying direction and pushed out from the rear side. The heavy load may be pulled forward when the device is contracted, the clamp of the clamp cylinder device may be released when the load is extended, and the clamp cylinder device may be sent forward, and the heavy load may be moved by repeating this. Depending on the heavy object, the drive device may be provided before and after the heavy object, and the object can be conveyed by both push and pull actions.

(Effect of the Invention) As described above, according to the present invention, since the connection between the propulsion drive cylinder device and the conveyed heavy load and the clamp device is a universal joint connection, the relative vertical movement of the heavy load and the drive device, and the left and right. Even if the traveling path is curved because the displacement in the direction is large, it can be effectively conveyed along the curved path. Also, the clamp of the drive unit firmly presses the rail by the wedge action of the wedge member provided between the rail and the cylinder device for clamping and clamps the rail flange portion between the hook portion of the clamp member to clamp. There is no concern about slippage as in the past, heavy objects or super heavy objects on the road can be moved reliably, and one movement stroke can be set arbitrarily within the stroke range of the cylinder device, and its operation is easy. There are some advantages.

[Brief description of drawings]

FIG. 1 is a side sectional view of an intermittent propulsion drive device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an end view seen from the arrow A of FIG. DESCRIPTION OF SYMBOLS 1 ... Heavy-duty support stand, 2 ... Rail, 3 ... 1st universal joint, 4 ... Propulsion drive cylinder device, 5,13 ... Operating rod, 6 ... Clamping cylinder device, 7 ... Bracket, 8 ... 2nd Universal joint, 9 ... Clamping member, 9a ... Hook part, 10, 11 ... Wedge member, 12, 14 ... Window hole, 15 ... Fork end, 16 ... Horizontal axis, 17 ... Vertical pin, 20 ... Plate.

Claims (1)

[Scope of utility model registration request] 1. A propulsion drive cylinder device connected to a driven body via a first universal joint, and a clamp connected to the other end of the propulsion drive cylinder device via a second universal joint. A cylinder device,
A clamp member that is arranged between the clamp cylinder device and a rail along the traveling path and that engages with a flange portion of the rail, and a clamp member that is held by the cylinder and the operating rod of the clamp cylinder device and that is engaged with the wedge member. The wedge member and the clamp member are adapted to clamp the flange portion of the rail in a vertical direction by the wedge action of the contracting operation of the clamping cylinder device. Intermittent propulsion drive device.