JP2022015697A - Heavy article conveyance device - Google Patents

Abstract

To provide a heavy article conveyance device capable of reducing weight of a component and shortening executing time.SOLUTION: A conveyance device 10 comprises: pluralities of guide rails 1 and trucks 2. Also, the conveyance device 10 comprises a propulsion jack 3j, and a connected body 4. The guide rails 1 include a pair of parallel rails. The trucks 2 are slidably connected to the parallel rails and can carry heavy articles. The propulsion jack 3j includes a cylinder body 3b and a piston rod 3r. The connected body 4 is fixed to a rearmost truck 2m, and connected to the tip of the piston rod 3r. The cylinder body 3b has an ear 3e and a claw 3n in a rear part. The ear 3e can slide on the parallel rails. The claw 3n can abut against a reaction receiver 12a of the guide rails 1, and climb over the reaction receiver 12a of a front stage. The conveyance device 10 can convey the heavy articles in a stepping manner in a forward direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a transport device for heavy objects. In particular, the present invention relates to the structure of a heavy object transport device suitable for moving a large heavy object transported by a freight vehicle such as a trailer on a plane such as a local floor or the ground.

For example, in mountainous areas or urban areas, it is not easy to install heavy equipment such as cranes, so large heavy objects carried by freight vehicles can be jacked up and used as trolleys that can move on rails laid on the ground. By placing heavy objects and moving this dolly, heavy objects are installed locally.

In order to move heavy objects of about 100 to 200 tons in sites where it is difficult to install cranes, etc., multiple trolleys with elevating jacks that can slide on a flat guide rail are connected, and a double-acting hydraulic cylinder is used. Further, a transporting device for a heavy object, which steps and conveys a connecting carriage on which a heavy object is placed, is disclosed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2019-73351

FIG. 8 is a perspective view showing the configuration of a heavy load transport device according to the prior art, and corresponds to the overall configuration diagram of Patent Document 1.

Referring to FIG. 8, the conventional heavy object transport device (hereinafter, abbreviated as transport device) 9 includes a long flat plate-shaped guide rail 91 and a plurality of slide carriages 92. The guide rail 91 can be laid on a flat surface such as a floor surface or the ground. Further, the guide rail 91 has a sled plate 91p laid on its upper surface. The guide rail 91 can be slidably mounted on the upper surface of the slide carriage 92.

Referring to FIG. 8, the guide rail 91 has a pair of guide walls 91w and 91w erected from both ends. The pair of guide walls 91w and 91w regulate the lateral movement of the slide carriage 92 so that the slide carriage 92 can move along the longitudinal direction of the guide rail 91. Further, the pair of guide walls 91w and 91w form a plurality of grooves 91d notched from the upper surface in a rectangular shape. These grooves 91d are formed at equal intervals.

Referring to FIG. 8, the plurality of slide carriages 92 are connected to each other by a bifurcated clevis (joint) and a bifurcated clevis (joint) by using two sets of link plates. The plurality of slide carriages 92 are connected to each other along the longitudinal direction of the guide rail 91.

With reference to FIG. 8, the plurality of slide carriages 92 can mount a heavy object (not shown) on the upper surface thereof. The slide carriage 92 is provided with a hydraulic columnar elevating jack 91j at the bottom. By supplying the driving oil to the plurality of elevating jacks 91j all at once, the slide carriage 92 can lift a heavy object. Further, the elevating jack 91j has a slide member fixed to the bottom surface thereof. As a result, the slide carriage 92 can be easily slid with respect to the guide rail 91.

Referring to FIG. 8, the transport device 9 further includes a double acting hydraulic cylinder 93, a first connecting body 94, and a second connecting body 95. The hydraulic cylinder 93 is composed of a cylinder body 93b and a piston rod 93r.

With reference to FIG. 8, by supplying the driving oil from one of the supply ports provided in the cylinder body 93b, the piston rod 93r can advance to the cylinder body 93b. By supplying the driving oil from the other supply port provided in the cylinder body 93b, the piston rod 93r can be retracted with respect to the cylinder body 93b. By hydraulically operating the hydraulic cylinder 93 in this way, the piston rod 93r can be moved forward and backward with respect to the cylinder body 93b.

Referring to FIG. 8, the first coupling body 94 is arranged in front of the hydraulic cylinder 93. The first connecting body 94 is regulated by a pair of guide walls 91w and 91w, and is slidably mounted on the guide rail 91.

Referring to FIG. 8, the first connecting body 94 is provided with a base portion 94m on which a heavy object can be placed at one end. Further, the first connecting body 94 is provided with a bifurcated clevis 94j at the other end. On the other hand, the piston rod 93r is provided with a single angle clevis 911 at the tip thereof that can be connected to the clevis 94j.

Referring to FIG. 8, the second coupling 95 is arranged behind the hydraulic cylinder 93. The second connecting body 95 is regulated by a pair of guide walls 91w and 91w, and is slidably mounted on the guide rail 91.

Referring to FIG. 8, the second coupling 95 is provided with a bifurcated clevis 95j at one end. On the other hand, the cylinder body 93b is provided with a single angle clevis 912 that can be connected to the clevis 95j at the rear end. As described above, the hydraulic cylinder 93, the first connecting body 94, and the second connecting body 95 constitute a propulsion jack 9j connected to each other. The propulsion jack 9j can slide freely on the guide rail 91.

Referring to FIG. 8, the first connecting body 94 is provided with a pair of stoppers 94s and 94s that can freely appear and disappear from both side surfaces thereof in the intermediate portion. The first coupling body 94 includes an actuator (not shown) that causes a pair of stoppers 94s and 94s to appear and disappear inside.

With reference to FIG. 8, when the pair of stoppers 94s and 94s protrude from both side surfaces of the first connecting body 94, the stoppers 94s engage with the groove 91d of the guide wall 91w with respect to the guide rail 91. , The first coupling 94 can be stopped. When the pair of stoppers 94s and 94s recede from both side surfaces of the first connecting body 94, the engagement between the stopper 94s and the groove 91d of the guide wall 91w is released, so that the first connecting body with respect to the guide rail 91 is disengaged. You can move 94.

Further, referring to FIG. 8, the second connecting body 95 includes a pair of stoppers 95s and 95s that can freely appear and disappear from both side surfaces thereof. The second coupling body 95 includes an actuator (not shown) that causes a pair of stoppers 95s and 95s to appear and disappear inside.

With reference to FIG. 8, when the pair of stoppers 95s and 95s project from both side surfaces of the second connecting body 95, the stopper 95s engages with the groove 91d of the guide wall 91w with respect to the guide rail 91. , The second coupling 95 can be stopped. When the pair of stoppers 95s / 95s recedes from both side surfaces of the second connecting body 95, the engagement between the stopper 95s and the groove 91d of the guide wall 91w is disengaged, so that the second connecting body with respect to the guide rail 91 is disengaged. You can move 95.

With reference to FIG. 8, a pair of stoppers provided on the second connecting body 95 with a heavy object placed on the connecting trolley 920 in which a plurality of slide trolleys 92 are connected and the base portion 94 m of the first connecting body 94. By projecting 95s / 95s and retracting the pair of stoppers 94s / 94s provided on the first connecting body 94 and advancing the piston rod 93r with respect to the cylinder body 93b, a heavy object is brought to the front of the transport device 9. You can move.

Next, with reference to FIG. 8, the pair of stoppers 94s / 94s provided on the first connecting body 94 protrudes from the state in which the heavy object has moved to the front of the transport device 9, and the pair provided on the second connecting body 95. By retracting the piston rod 93r with respect to the cylinder body 93b in the state where the stoppers 95s and 95s are retracted, the first connecting body 94 does not move, and the pair of stoppers 95s provided on the second connecting body 95. The second coupling 95 can be moved to a position where the 95s engages the next groove 91d.

In this way, the transport device 9 can step and transport a heavy object in front of the guide rail 91 by repeating the above-mentioned operation. The transport device according to Patent Document 1 states that a large heavy object can be easily transported to a predetermined position.

However, with reference to FIG. 8, the conventional transfer device, for example, the propulsion jack 9j, is a hydraulic cylinder 93, a first coupling 94, and a second coupling in order to reduce on-site assembly time. The 95 was integrated and transported by a freight vehicle. For this reason, in the field, heavy equipment such as a crane was required to mount the heavy-duty propulsion jack 9j on the guide rail 91, but in the field such as a mountainous area or an urban area, a heavy equipment such as a crane can be installed. It wasn't easy.

In order to assemble a heavy load transport device locally, there is a demand for a heavy load transport device that does not require a large heavy machine such as a crane.

Further, with reference to FIG. 8, in the conventional transport device, for example, a plurality of guide rails 91 having a predetermined length are prepared in accordance with the transport distance of heavy objects at the site, and these guide rails 91 are provided. Since it was necessary to lay the sled plate 91p after assembling in the length direction at the site, there was a problem that it was not easy to shorten the construction time at the site.

In addition to reducing the weight of the components constituting the heavy load transport device, there has been a demand for these heavy load transport devices. The above can be said to be the subject of the present invention.

The present invention has been made in view of such problems, and an object of the present invention is to provide a heavy object transporting device capable of reducing the weight of components and shortening the construction time for assembling these components. ..

(1) The heavy object transport device according to the present invention is a heavy object transport device that linearly transports a heavy object from one point to another, and has a pair of parallel rails fixed to the upper surface of a floor plate. It has a plurality of low-profile guide rails that can be laid freely from one point to another, and is arranged so as to straddle the pair of parallel rails, and is slidably connected to the pair of parallel rails. A propulsion jack composed of a plurality of flat plate-shaped trolleys on which heavy objects can be placed, a cylinder body and a piston rod that can move forward and backward from the cylinder body, and arranged on the guide rail along the traveling direction of the trolley. It is provided with a connecting body that is fixed to the rearmost trolley and can be detachably connected to the tip of the piston rod, and the guide rails are arranged in a direction substantially orthogonal to the direction in which the pair of parallel rails extend. The cylinder body has a force receiving portion at one end, and the cylinder body protrudes from the bottom portion of the rear portion and abuts on the reaction force receiving portion to prevent the propulsion jack from returning and to prevent the propulsion jack from returning. It has a triangular claw part that can overcome the force receiving part.

(2) It is preferable that the trolley has a pair of parallel rails and a slidable sliding plate fixed to the bottom surface.

(3) It is preferable that the guide rail is provided with a link plate arranged between the pair of parallel rails at one end thereof, and the link plate connects a plurality of the guide rails in the front-rear direction. ..

The heavy object transport device according to the present invention has a structure in which the weight of the components can be reduced and the propulsion jack can only be advanced by reducing the height of the guide rails without providing a pair of guide walls on the guide rails. By changing to, the construction time for assembling the components can be shortened.

It is a perspective view which shows the structure of the heavy goods transporting apparatus by one Embodiment of this invention. It is a perspective view which shows the structure of the guide rail provided in the transporting apparatus of a heavy object by the said embodiment, and is the state diagram before connecting the guide rail to the rear part of the connected guide rail. It is a perspective view which shows the structure of the bogie provided in the transporting apparatus of a heavy object by the said embodiment, and is the state figure before connecting the bogie with a connecting body to the rear part of the connected bogie. It is a perspective view which shows the structure of the propulsion jack provided in the transporting apparatus of a heavy object by the said embodiment, and is the state diagram before connecting a propulsion jack to a carriage with a connecting body. 5A and 5B are front views of the propulsion jack, FIG. 5B is a plan view of the propulsion jack, and FIG. 5B is a diagram showing a configuration of a propulsion jack provided in the heavy load transport device according to the above embodiment. C) is a right side view of the propulsion jack, and FIG. 5 (D) is a left side view of the propulsion jack, which is a state diagram in which the piston rod is retracted. 6A and 6B are front views of the trolley, FIG. 6B is a plan view of the trolley, and FIG. 6C is a diagram showing a configuration of a trolley provided in the heavy load transport device according to the above embodiment. , It is a right side view of the dolly. It is a figure which shows the structure of the guide rail provided in the transport device of a heavy object by the said embodiment, FIG. 7A is a front view of the guide rail, FIG. 7B is a plan view of a guide rail, and FIG. C) is a right side view of the guide rail, and FIG. 7 (D) is a left side view of the guide rail. It is a perspective view which shows the structure of the transporting apparatus of a heavy object by a prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Structure of heavy load transfer device]
First, the overall configuration of the heavy load transport device according to the embodiment of the present invention will be described.

(overall structure)
Referring to FIGS. 1 to 4, the heavy object transfer device (hereinafter, abbreviated as a transfer device) 10 according to the embodiment of the present invention linearly moves a heavy object (not shown) from one point to another. Can be transported. The transport device 10 includes a plurality of low-profile guide rails 1 and a plurality of flat plate-shaped carriages 2. Further, the transport device 10 includes a propulsion jack 3j and a connecting body 4.

Referring to FIGS. 1 to 4 and 7, the guide rail 1 is composed of a rectangular floor plate 11 and a pair of parallel rails 1r and 1r. The pair of parallel rails 1r and 1r are fixed to the upper surface of the floor plate 11. By connecting a plurality of guide rails 1 in their longitudinal directions, a plurality of guide rails 1 can be laid in a plane from one point to another.

Referring to FIGS. 1 to 4, in the embodiment, the plurality of guide rails 1 are laid on the upper surface of the transport equipment 8 made of a long aluminum square vibe. H-shaped steel can also be used for the transport equipment 8.

Referring to FIGS. 1 to 4, the carriage 2 is arranged so as to straddle a pair of parallel rails 1r and 1r. The carriage 2 is slidably connected to a pair of parallel rails 1r and 1r. Then, a heavy object (not shown) can be placed on the trolley 2.

Referring to FIG. 1 or FIGS. 4 and 5, the propulsion jack 3j is composed of a cylinder body 3b and a piston rod 3r. The piston rod 3r can move forward and backward from the cylinder body 3b. In the state shown in FIG. 5, the piston rod 3r is retracted from the cylinder body 3b. By driving the cylinder body 3b, as shown by the imaginary line in FIG. 5, the piston rod 3r can advance from the cylinder body 3b. The propulsion jack 3j is actually a double-acting hydraulic cylinder.

Referring to FIG. 1 or FIG. 4, the propulsion jack 3j is arranged on the guide rail 1 along the traveling direction of the carriage 2. In the state shown in FIG. 1 or 4, the propulsion jack 3j is arranged on the rearmost guide rail 1.

Referring to FIG. 1 or FIG. 4, the connecting body 4 is fixed to the rearmost bogie 2m. The connecting body 4 can be detachably connected to the tip end portion of the piston rod 3r. The last dolly 2m and the dolly 2 are the same, but they are distinguished by changing the reference numerals for convenience of explanation. Further, the connecting body 4 can be detachably fixed to the rearmost trolley 2m, but in the embodiment, the connecting body 4 is joined to the rearmost trolley 2m by welding or the like, and the connecting body 4 and the rearmost trolley 4 are joined to each other. The dolly 2m is integrated.

Referring to FIGS. 1 to 4 and 7, the guide rail 1 is provided with a rectangular link plate 12 at one end. The link plate 12 is arranged between the pair of parallel rails 1r and 1r. Referring to FIG. 2 or FIG. 7, the guide rail 1 has a pair of connecting holes 11h and 11h penetrating from the side surface direction at both ends. Further, the link plate 12 has a pair of connecting holes 12h and 12h penetrating from the side surface direction at both ends.

With reference to FIG. 2 or FIG. 7, one connecting hole 11h formed in the guide rail 1 and the other connecting hole 12h formed in the link plate 12 are matched with each other, and the connecting pin 12p is inserted to insert the guide rail. The link plate 12 can be swingably connected to 1.

With reference to FIG. 2 or FIG. 7, one connecting hole 12h formed in the link plate 12 and the other connecting hole 11h formed in the other guide rail 1 are matched with each other, and the connecting pin 12p is inserted. The link plate 12 can be swingably connected to a large number of guide rails 1. The link plate 12 is provided with a fixing screw 12s with a knob so that the connecting pin 12p does not easily fall off from the other guide rail 1 and the link plate 12.

As described above, referring to FIG. 2 or FIG. 7, the link plate 12 connects a plurality of guide rails 1 so as to be swingable in the front-rear direction. Further, a fixing screw 12s with a knob is attached to the link plate 12 so that the tip surface can abut on the connecting pin 12p so that the connecting pin 12p does not easily fall off from the guide rail 1 and the link plate 12.

Referring to FIG. 5A or FIG. 7A, the link plate 12 has a reaction force receiving portion 12a formed at an acute angle formed at one end thereof. Referring to FIG. 2 or FIG. 7, the guide rail 1 arranges the reaction force receiving portion 12a in a direction substantially orthogonal to the direction in which the pair of parallel rails 1r and 1r extend.

Referring to FIG. 1 or FIGS. 4 and 5, the cylinder body 3b has a pair of ear portions 3e and 3e and a triangular claw portion 3n at the rear. The pair of ear portions 3e and 3e project in opposite directions in the outer peripheral direction of the cylinder body 3b. Further, the pair of ear portions 3e and 3e can cantileverly support the propulsion jack 3j and can slide on the upper surfaces of the pair of parallel rails 1r and 1r.

Referring to FIG. 5A, the claw portion 3n protrudes from the bottom portion of the cylinder body 3b. The short side of the claw portion 3n abuts on the reaction force receiving portion 12a of the link plate 12 to prevent the propulsion jack 3j from returning. Further, the hypotenuse of the claw portion 3n can overcome the reaction force receiving portion 12a of the link plate 12 attached to the guide rail 1 in the previous stage.

With reference to FIG. 1 or 5, when the cylinder body 3b is driven and the piston rod 3r advances from the cylinder body 3b, a plurality of carriages 2 on which a heavy object is placed are pushed forward through the connecting body 4. be able to. In this case, since the claw portion 3n of the cylinder body 3b is in contact with the reaction force receiving portion 12a of the guide rail 1, the propulsion jack 3j is prevented from retreating with respect to the guide rail 1. That is, the return of the propulsion jack 3j can be prevented.

With reference to FIG. 1 or FIG. 5, when the cylinder body 3b is driven and the piston rod 3r is retracted from the cylinder body 3b from the above-mentioned state, the piston rod 3r is pulled by a plurality of carriages 2 on which a heavy object is placed and propelled. You can move the jack 3j forward. In the process of advancing the propulsion jack 3j, the pair of selvages 3e and 3e can slide without derailing the upper surfaces of the pair of parallel rails 1r and 1r.

With reference to FIG. 1 or FIG. 5, in the process of advancing the propulsion jack 3j by being relatively towed by a plurality of carriages 2 on which a heavy object is placed, the reaction of the link plate 12 attached to the guide rail 1 in the previous stage The short side of the claw portion 3n can face the reaction force receiving portion 12a of the link plate 12 in the front stage by overcoming the force receiving portion 12a.

As described above, in the transport device 10 according to the embodiment, the piston rod 3r provided in the propulsion jack 3j repeatedly moves forward and backward, so that a heavy object can be stepped and conveyed in front of the guide rail 1. The transport device 10 according to the embodiment is different from the conventional transport device 9, and the propulsion jack is changed to a structure capable of only advancing.

(Structure of guide rail)
Next, the configuration of the guide rail 1 according to the embodiment will be described. Referring to FIG. 2 or FIG. 7, the guide rail 1 has U-shaped handles 11g and 11g attached to both side surfaces. The guide rail 1 can be conveyed by grasping one handle 11g or both handles 11g / 11g. The floor plate 11 is opened with a set of punching holes 111 and 111 for weight reduction. Further, the floor plate 11 is provided with a screw hole at the center for screwing the eyebolt 1i.

Referring to FIG. 7, since the guide rail 1 according to the embodiment does not have a pair of guide walls 91w and 91w formed at both ends (see FIG. 8), the weight can be reduced and the guide rail 1 can be transported by an operator. Is also possible. Further, since the guide rail 1 according to the embodiment has a shorter rail length than the guide rail 91 of the prior art, the unit weight can be reduced and the guide rail 1 can be transported by an operator. Further, the guide rail 1 according to the embodiment can be attached with an eyebolt 1i, and can be pulled up or down by using a chain block or the like.

Referring to FIG. 2 or FIG. 7, the conventional guide rail 91 uses bolt members and nut members to connect a plurality of guide rails 91 in the length direction (see FIG. 8). The guide rail 1 according to the form connects a plurality of guide rails 1 in the length direction by using a connecting pin 12p. As a result, the assembly time of the plurality of guide rails 1 can be shortened.

(Structure of dolly)
Next, the configuration of the carriage 2 according to the embodiment will be described. Referring to FIG. 3 or FIG. 6, the carriage 2 is composed of a rectangular mounting plate 21 and a pair of prismatic guide walls 22 and 22. A heavy object (not shown) can be placed on the mounting plate 21.

Referring to FIG. 3 or FIG. 6, the pair of guide walls 22 and 22 are joined to the bottom surface of the mounting plate 21 by welding or the like. The pair of guide walls 22 and 22 are arranged to face each other so that the pair of parallel rails 1r and 1r can be guided from the outside of the pair of parallel rails 1r and 1r.

Referring to FIG. 6, the pair of guide walls 22 and 22 have a fitting hole 22h formed from their end faces. A plurality of trolleys 2 are formed by fitting the fitting pins 21p into the fitting holes 22h by using the connection pins 2p in which the pair of fitting pins 21p and 21p project from both ends in opposite directions (see FIG. 3). Can be connected in the length direction.

Referring to FIG. 6, the mounting plate 21 is attached to the bottom surface with the pair of sliding plates 23 and 23 separated from each other. The sliding plate 23 can slide with the upper surface of the parallel rail 1r (see FIG. 6). By interposing the sliding plate 23 between the bottom surface of the trolley 2 and the upper surface of the parallel rail 1r, the frictional resistance between the pair of parallel rails 1r and 1r and the trolley 2 can be reduced. As a result, heavy objects placed on the plurality of carriages 2 can be easily moved.

(Structure of propulsion jack)
Next, the configuration of the propulsion jack 3j according to the embodiment will be described. Referring to FIG. 5, the piston rod 3r is provided with a chevron-shaped clevis 3c at the tip. On the other hand, referring to FIG. 4, the connecting body 4 is provided with a bifurcated clevis 41j at the rear end. By matching the connecting hole opened in the clevis 3c with the connecting hole opened in the clevis 41jc, inserting the cotter 41p into these connecting holes, and fastening the eyebolt 41b to the tip of the cotter 41p, the connecting body 4 is connected. The propulsion jack 3j can be swingably connected (see FIG. 1).

Referring to FIG. 5, the cylinder body 3b has U-shaped handles 31g and 31g attached to both ends. It is also possible to manually convey the propulsion jack 3j by grasping these handles 31g and 31g.

Referring to FIG. 5, the cylinder body 3b includes a set of connecting pipes 31c and 32c. One connection pipe 31c is connected to a supply port opened on the head side. The other connection pipe 32c is connected to a supply port opened on the rod side.

With reference to FIG. 4 or FIG. 5, the piston rod 3r can advance to the cylinder body 3b by supplying the driving oil from one supply port via one connection pipe 31c. By supplying the driving oil from the other supply port via the other connection pipe 32c, the piston rod 3r can be retracted with respect to the cylinder body 3b.

[Action of heavy load transfer device]
Next, the operation and effect of the transfer device 10 will be described while explaining the assembly procedure and operation of the transfer device 10 according to the embodiment.

First, the transport equipment 8 is laid at the stop position of a freight vehicle such as a trailer carrying a heavy object (see FIGS. 2 to 4). Next, a plurality of columnar double-acting hydraulic jacks (not shown) are used to lift heavy objects from the ground. Next, the guide rail 1 and the trolley 2 of the set of transport devices 10 and 10 arranged in duplicate are inserted between the bottom surface of the heavy object and the soil surface. Next, the double-acting hydraulic jack (not shown) is lowered to place a heavy object on the plurality of carriages 2.

Next, from the stop position of the freight vehicle (one point) to the place where the heavy object is installed (other point), the transport equipment 8 and the guide rail 1 are added, and the transport device 10 is driven from one point to the other. Heavy objects can be transported linearly toward the point.

(Assembly procedure for transporting heavy objects)
Next, the procedure for assembling the transport device 10 according to the embodiment will be described. First, the coupling body 4 and the propulsion jack 3j are connected by using the cotter 41p and the eyebolt 41b with reference to FIG. 4 or FIG.

Referring to FIG. 8, since the propulsion jack 9j according to the prior art has the first connecting body 94 and the second connecting body 95 attached to the front and rear of the propulsion jack 9j, the total weight is heavy, and the propulsion jack 9j is moved up and down by using a crane or the like. Was there. On the other hand, referring to FIG. 4 or FIG. 5, since the propulsion jack 3j according to the embodiment is composed of only the cylinder body 3b, the total weight can be reduced. Then, the connecting body 4 and the propulsion jack 3j can be easily connected manually.

Next, referring to FIG. 2 or FIG. 7, the adjacent guide rails 1 are connected to each other by using the connecting pin 12p. In the guide rail 91 according to the prior art, a plurality of guide rails 91 are connected in the length direction by using a bolt member and a nut member (see FIG. 8), whereas the guide rail 1 according to the embodiment has a connecting pin. Using 12p, a plurality of guide rails 1 are connected in the length direction. As a result, the weight of one guide rail 1 can be reduced, and the assembly time of a plurality of guide rails 1 can be shortened.

Next, referring to FIG. 3 or FIG. 6, the adjacent carriages 2 are connected to each other by using the connection pin 2p. Referring to FIG. 8, the conventional transfer device 9 uses two sets of link plates to connect adjacent slide carriages 92 to each other. On the other hand, in the transport device 10 according to the embodiment, since the adjacent trolleys 2 can be connected to each other from the side surface direction by using the connection pin 2p, the construction time for assembling the trolleys 2 can be shortened.

Further, referring to FIG. 6, since the carriage 2 has the sliding plate 23 attached to the bottom surface in advance, it is possible to omit the work of laying the slide plate 91p on the upper surface of the guide rail 91 as in the prior art.

By operating the propulsion jack 3j of the transport device 10 assembled as described above using a hydraulic pump device with an operation panel (not shown), heavy objects can be linearly transported from one point to another. Referring to FIG. 8, the conventional transfer device 9 required the operation of the propulsion jack 9j and the actuator (not shown) built in the coupling body, whereas the transfer device 10 according to the embodiment uses the propulsion jack 3j. It only needs to be operated, and has the advantage of facilitating the operation of the transport device.

The heavy object transport device according to the present invention has a structure in which the weight of the components can be reduced and the propulsion jack can only be advanced by reducing the height of the guide rails without providing a pair of guide walls on the guide rails. By changing to, the construction time for assembling the components can be shortened.

1 Guide rail 1r / 1r Pair of parallel rails 2 trolleys 3j Propulsion jack 3b Cylinder body 3e Ear part 3n Claw part 3r Piston rod 4 Connection body 10 Conveyor device (conveyor device for heavy objects)

Claims (3)

It is a heavy object transport device that linearly transports heavy objects from one point to another.
With a pair of parallel rails fixed to the upper surface of the floor plate, multiple low-profile guide rails that can be laid freely from one point to another,
A plurality of flat plate-shaped trolleys that are arranged so as to straddle the pair of parallel rails, are slidably connected to the pair of parallel rails, and can carry heavy objects.
A propulsion jack composed of a cylinder body and a piston rod that can move forward and backward from the cylinder body and arranged on the guide rail along the traveling direction of the bogie.
It is provided with a connecting body that is fixed to the trolley at the end and can be detachably connected to the tip of the piston rod.
The guide rail has a reaction force receiving portion arranged at one end thereof in a direction substantially orthogonal to the direction in which the pair of parallel rails extend.
The cylinder body is
It has a triangular claw portion that protrudes from the bottom of the rear portion and abuts on the reaction force receiving portion to prevent the propulsion jack from returning and to overcome the reaction force receiving portion of the guide rail in the front stage. A transport device for heavy objects. The trolley is the transport device for heavy objects according to claim 1, wherein the pair of parallel rails and a slidable sliding plate are fixed to the bottom surface. The guide rail has a link plate arranged between the pair of parallel rails at one end thereof.
The heavy object transporting device according to claim 1 or 2, wherein the link plate connects a plurality of the guide rails in the front-rear direction.

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