JP6887161B2 - Rail catch and rail carrier - Google Patents

Description

The present invention relates to a rail catch provided at the tip of an elevating chain of a crane mounted on a rail carrier and gripping the rail, and a rail carrier.

Conventionally, rail transport vehicles called "rail transport toro" or "rail transport multipurpose toro (commonly known as one-frame)" have been used to transport new rails to the site or load and bring back rails that have expired at the site. (See, for example, Patent Documents 1 to 3). In such a rail carrier, the rail catch provided at the tip of the elevating chain of the crane is used to grab multiple rails, and the new rails that have been loaded can be unloaded at the site or removed at the site. Is lifted and loaded.

Japanese Unexamined Patent Publication No. 2013-79522 Japanese Unexamined Patent Publication No. 2009-046873 Utility Model Registration No. 3116107

However, in the rail carrier described above, there are usually 3 to 4 electric cranes for lifting the rails on the loading platform of the vehicle, and when loading and unloading the rails, each of the 3 to 4 rails is used. The work of grasping the rail is performed in the catch, but when working in the field, there is a problem that a plurality of workers are usually involved for attaching and detaching the rail catch, and it takes a lot of manpower.

In particular, in order to operate the rail catch, we often get on and off the vehicle repeatedly, and in order to speed up the work, we usually have as many people as there are cranes, so there is a shortage of manpower these days. Meanwhile, there is a desire to reduce the number of workers.

In addition, getting on and off the vehicle imposes a heavy burden on the operator, and since the work is performed by multiple people, the work speed varies, and in some cases the installation is insufficient and the rail once lifted is lowered and installed. It may be fixed.

Therefore, the present invention has been made by paying attention to such a problem, and provides a rail catch and a rail carrier capable of catching or opening a rail quickly with as few workers as possible. The purpose is.

In order to solve the above problems, the rail catch according to the present invention is a rail catch provided at the tip of an elevating chain of a crane mounted on a rail carrier and grips the rail, and is a long rail extending in the longitudinal direction of the rail to be caught. The rail catch main body and at least both ends of the rail catch main body in the longitudinal direction are rotatably provided on both the left and right sides of the rail so as to sandwich the rail to be caught. A plurality of rotary rail catch portions having a rail catch body provided with a rail catch protrusion for sandwiching the rail by projecting from the rail catch, and at least both ends of the rail catch main body in the longitudinal direction. Each of the plurality of rotary rail catch portions is provided with a connecting rod portion for connecting the rail catch body, and by operating the connecting rod portion, the plurality of rotary rail catches connected by the connecting rod portion are provided. parts and simultaneously to rotate the respective said rail catch body, or to catch rails by clamping the rail the rail catch projections of each rail catch body protrudes jaw below the rail, for the rail catch A rail catch that opens the rail by shifting the protrusion from below the jaw of the rail.
Further, in the rail catch according to the present invention, the rail catch body of each of the plurality of rotary rail catch portions is a protrusion for the rail catch via a rotation shaft portion which is a rotation shaft when rotating. A working piece is provided on the opposite side of the working piece, and the connecting rod portion is connected to a tip portion of the working piece that is separated from the rotating shaft portion, and by moving the connecting rod portion in a certain direction. protrudes jaws below the said rail catch projection of the connecting rod portion of the plurality of rotating rail catch portion respectively of the rail catch body that is connected with and rotated simultaneously each rail catch body rail catch rail by clamping the rail Te, further the connecting rod unit Before moving in the same direction, the tip end portion of the operating piece is connected to the distal end portion of the operating piece approaching the rail catch body portion The connecting rod portion comes into contact with the rail catch main body portion to stop the rotation of each rail catch body, and the rail catch protrusion portion is configured to maintain the state of sandwiching the rail. wherein by moving the connecting rod portion in the opposite direction, the rail of the connecting rod portion simultaneously to rotate the concatenated plurality of rotating rail catch portion respectively of the rail catching body in each rail catch member opening the rail catch projection is Te displaced from the jaws under the rails, when Ru is further moved to the connecting rod portion in the same opposite direction, the actuating tip portion of the operating piece is closer to the rail catch body portion When the connecting rod portion connected to the tip end portion of the piece abuts on the rail catch main body portion, the rotation of each rail catch body is stopped, and the rail catching protrusion maintains the rail open state. It is also characterized in that it is configured in this way.
Further, the rail catch according to the present invention, said connecting rod portion and the operating piece is connected by an actuating piece connected handle, said operating piece connecting the handle, as can manipulate the connecting rod portion grab the operator It is also characterized in that it is erected from the connecting portion between the connecting rod portion and the operating piece.
Further, the rail carrier according to the present invention is characterized in that any of the above-mentioned rail catches is provided at the tip of the elevating chain of the crane.

The rail catch according to the present invention has a long rail catch main body extending in the longitudinal direction of the rail to be caught, and at least both ends of the rail catch main body in the longitudinal direction so as to sandwich the rail to be caught on both the left and right sides of the rail. Has a rail catch body that is rotatably provided and has a rail catch protrusion at the lower end, and the rail catch protrusion protrudes below the rail jaw due to the rotation of the rail catch body. While catching the rail by doing so, the rail catching protrusions are displaced from below the jaw of the rail to open the rail, and at least at both ends of the rail catch body in the longitudinal direction. A plurality of rotary rail catch portions provided A connecting rod portion for connecting each rail catch body is provided, and by operating the connecting rod portion, a plurality of rotary rail catches connected by each connecting rod portion are provided. It is configured to rotate the parts at once.
Therefore, when loading and unloading the rails, it is possible to omit the number of workers who operate the rail catch, and it is possible to quickly perform the loading and unloading work of the rails.

It is a front view of the rail carrier provided with the rail catch of the embodiment which concerns on this invention. It is a top view of the rail carrier provided with the rail catch of the embodiment which concerns on this invention. It is a front view which shows the state which the rail catch of the embodiment which concerns on this invention has caught a rail. It is a partially enlarged plan view which shows the state which the leading rail catch has caught a rail among a plurality of rail catches in the rail carrier of the embodiment of this invention. It is a partially enlarged side view which shows the state which the leading rail catch has caught a rail among a plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged plan view which shows the state which the intermediate rail catch has caught the rail among the plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged side view which shows the state which the intermediate rail catch has caught the rail among the plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged plan view which shows the state which the last rail catch has caught a rail among a plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged side view which shows the state which the last rail catch has caught a rail among a plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged sectional plan view which shows the state which the intermediate rail catch has caught the rail among the plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged cross-sectional side view which shows the state which the intermediate rail catch has caught the rail among the plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged sectional plan view which shows the state which the intermediate rail catch opened a rail among a plurality of rail catches in the rail carrier of the embodiment which concerns on this invention. It is a partially enlarged cross-sectional side view which shows the state which the intermediate rail catch opened a rail among a plurality of rail catches in the rail carrier of the embodiment which concerns on this invention.

Hereinafter, the rail catch 1 of the embodiment according to the present invention and the rail carrier 2 using the rail catch 1 will be specifically described with reference to the drawings. The embodiments described below are merely examples of the present invention, and the present invention is not limited to the embodiments described below.

The rail catch 1 of the embodiment according to the present invention is provided at the tip of the elevating chain 33a of the crane 3 mounted on the rail carrier 2, and grips and opens the rail R. Hereinafter, the rail carrier 2 and the crane 3 will be briefly described, and then the rail catch 1 of the embodiment will be described.

<Rail carrier 2>
As shown in FIGS. 1 and 2, the rail transport vehicle 2 is a well-known transport vehicle that travels on the rail R of the track by the left and right wheels 21 and 21, and transports the old and new rail R. For example, four cranes 3 are mounted at intervals, and the four cranes 3 are configured to load and unload the old and new rails R. The number of cranes 3 is an example, and the present invention may be other than four cranes, and at a minimum, two cranes may be provided at the front and rear ends of the rail carrier 2.

<Crane 3>
As shown in FIG. 1 and the like, the crane 3 is an elevator 33 along the longitudinal direction of the horizontal rail 32 provided at a position slightly higher than the middle of the vertical direction of the rotatable column 31 erected on the upper side of the rail carrier 2. The rail R is unloaded and loaded from the rail carrier 2 by moving the elevating chain 33a up and down by the elevator 33.

Therefore, the hook 33b at the tip of the elevating chain 33a of the elevator 33 is provided with the rail catch 1 of the embodiment according to the present invention that grips and opens the rail R. The 33c is a remote controller that is operated by an operator to give a command to move the elevator 33 left and right along the longitudinal direction of the horizontal rail 32 and to raise and lower the elevating chain 33a.

<Rail catch 1>
As described above, the rail catch 1 of the embodiment according to the present invention is provided at the tip of the elevating chain 33a of the elevating machine 33 of the crane 3 mounted on the rail carrier 2, and grips and opens the rail R. It has a long rail catch main body 11 extending in the longitudinal direction of the rail R, a plurality of rotary rail catches 12 provided for each of the four cranes 3, and a connecting rod portion 13.

(Rail catch body 11)
The rail catch main body 11 extends in the longitudinal direction of the rail R to be caught and has substantially the same length as the length of the rail carrier 2 in the longitudinal direction. As shown in FIGS. 4 to 9, a plurality of rails are provided. It is composed of a catch support portion 11a and a plurality of rail catch support connecting portions 11b for connecting the plurality of rail catch support portions 11a.

(Rail catch support portion 11a)
As shown in FIGS. 3 and 4, the plurality of rail catch support portions 11a are connected by inserting the hook portions 11a1 for hooking the hook 33b at the tip of the elevating chain 33a from the lower surface side on the central upper surface side in the left-right direction. While it is provided by bolts 11a2, a rail catch guide plate 11a3 is provided on the lower surface side.

The rail catch guide plate 11a3 guides the rail R to be caught to a predetermined catch position and prevents lateral shake of the caught rail R, and as shown in FIG. 3 and the like, the width of the rail R head and the width of the rail R head. It is an inverted U-shaped member having substantially the same or slightly larger recesses, and inclined surfaces 11a31 and 11a31 are formed on both insides of the lower ends of the recesses so that the rail R head can easily enter the recesses.

Further, each rail catch support portion 11a is formed with insertion holes on both the left and right sides, and the rotation shaft portion 12a of the rotary rail catch portion 12, which will be described later, is inserted into the insertion holes and is rotated by the nut 12b. The movable rail catch portion 12 is rotatably attached.

Further, each rail catch support portion 11a is formed with bolt holes 11a4 for connecting with the rail catch support connecting portion 11b because they are connected and used by the rail catch support connecting portion 11b, respectively. As shown in FIG. 9 and the like, the rail R is connected so as to extend in the longitudinal direction by fastening the connecting bolt 11c and the connecting nut 11d.

Each of the plurality of rail catch support connecting portions 11b is a narrow and long plate-shaped member that connects the rail catch supporting portions 11a at predetermined intervals, and is connected to each rail catch supporting portion 11a at both ends thereof. A bolt hole is formed for the rail R, and as shown in FIGS. 4 to 9 and the like, the rail R is connected so as to extend in the longitudinal direction by fastening the connecting bolt 11c and the connecting nut 11d.

(Rotary rail catch portion 12)
The rotary rail catch portion 12 rotates to catch the rail R, and the upper end portion is fixed by a nut 12b through which male screw portions are passed through insertion holes provided on both the left and right sides of the rail catch support portion 11a. A rail catch body rotatably supported by a rotating shaft portion 12a and a rotating shaft portion 12a, which are fixed by a retaining pin 12a2 and provided with a retaining portion 12a1 having a large diameter at the lower end portion. It has 12c and.

The rail catch body 12c is formed in a hollow tubular shape so that the rotating shaft portion 12a passes through the center, and is attached so as to be sandwiched between the rail catch support portion 11a and the retaining portion 12a1 so as not to come off in the vertical direction. A rail catching protrusion 12c1 protruding in the horizontal direction is provided at the lower end portion to form an L shape, and by rotating, the rail R protrudes below the jaw portion to catch the rail R. , The rail R is configured to be opened by shifting from below the jaw portion of the rail R.

Further, on the upper part of the rail catch body 12c, an operating piece 12c2 for rotating the rail catch body 12c to catch the rail R or to open the rail R is joined by welding or the like.

(Connecting rod portion 13)
As shown in FIGS. 4 to 9, the connecting rod portion 13 connects a plurality of rotary rail catch portions 12 on the left and right sides of the rail R provided on the rail catch main body portion 11 on each side once. It is composed of a plurality of turnbuckle members 13a, a plurality of rod members 13b, an operating piece connecting member 13c, an operating piece connecting handle 13d, and the like. That is, one connecting rod portion 13 is provided separately on the left side and the right side of the rail R.

The turnbuckle member 13a has female screw portions having a reverse screw relationship with each other formed at both ends in the longitudinal direction, and the male screw portion 13b2 of the rod member 13b screwed to both ends by rotating. , A member that adjusts the length of the entire connecting rod portion 13 by changing the screwing length of the working piece connecting member 13c with the connecting shaft portion 13c2.

The rod member 13b is provided at the long and hollow pipe-shaped rod member main body 13b1 and the right end portion of the rod member main body 13b1 in the drawings of FIGS. 4 to 9, and is screwed into the female screw portion of the turnbuckle member 13a. The screw portion 13b2 and the working piece 12c2 of the rail catch body 12c and the bolt 13d1 at the lower end of the working piece connecting handle 13d are provided on the left end of the rod member main body 13b1 in FIGS. It is composed of a first connecting piece 13b3 which is connected via the first connecting piece 13b3.

The actuating piece connecting member 13c is the actuating piece 12c2 of the rail catch body 12c, the second connecting piece 13c1 connected via the bolt 13d1 at the lower end of the operating piece connecting handle 13d on the upper side thereof, and the turnbuckle member 13a on the drawing. , It is composed of a connecting shaft portion 13c2 provided with a male screw portion to be screwed into the female screw portion at the right end portion.

As shown in FIGS. 4 and 5, the working piece connecting handle 13d has the working piece 12c2 of the rail catch body 12c and the rod member 13b at the left end rail catch supporting part 11a due to the fixing screw 13d1 at the lower end thereof. 1 The connecting piece 13b3 is rotatably connected, and as shown in FIGS. 6 and 7, in the rail catch supporting portion 11a in the intermediate portion, the operating piece 12c2 of the rail catch body 12c and the first connecting piece of the rod member 13b are connected. 13b3 and the second connecting piece 13c1 of the working piece connecting member 13c are rotatably connected, and as shown in FIGS. 8 and 9, the rail catch supporting portion 11a at the right end is the working piece 12c2 of the rail catch body 12c. And the second connecting piece 13c1 of the operating piece connecting member 13c are rotatably connected, and since they are erected as shown in FIGS. 5, 7 and 9, the operator can easily grasp and pull them. It is configured in. However, the operator directly grasps the turnbuckle member 13a and the rod member 13b of the connecting rod portion 13 and operates the connecting rod portion 13 without grasping the operating piece connecting handle 13d, and is connected by the connecting rod portion 13. Of course, the rail catch bodies 12c of the plurality of rotary rail catch portions 12 may be rotated at once to catch or open the rail R.

<Explanation of how to use the rail catch 1 of the embodiment>
Next, a method of using the rail catch 1 of the embodiment configured as described above will be described.

(When catching rail R with rail catch 1)
In FIGS. 10 and 11, of the four rail catches 1 in the rail carrier 2 of the embodiment, the intermediate rail catch 1 excluding the rail catches 1 at both ends in the longitudinal direction of the rail carrier 2 catches the rail R, respectively. It is a partially enlarged cross-sectional plan view and a partially enlarged cross-sectional side view which shows the state which was done.

In this case, the operator rides on the rail carrier 2, and on the left and right sides of the rail R, on the upper side in FIG. 10, the rail catch body is pulled by grasping the working piece connecting handle 13d of the rail catch 1 and pulling it in the α direction. 12c is rotated clockwise so that the rail catch protrusion 12c1 at the lower end of the rail catch body 12c protrudes below the jaw portion of the rail R, while on the lower side in FIG. 10, the working piece connecting handle 13d of the rail catch 1 and the like are shown. The rail catch body 12c is rotated counterclockwise by grasping and pulling the rail catch body 12c in the β direction, and the rail catch protrusion 12c1 at the lower end of the rail catch body 12c is projected below the jaw portion of the rail R.

As a result, as shown in FIG. 11, on the left and right sides of the rail R, the rail catch protrusions 12c1 at the lower ends of the plurality of rail catch bodies 12c connected by the connecting rod portions 13 project below the jaw portion of the rail R. Therefore, even if the rail R is long, the rail R can be caught, that is, grasped by the rail catch 1 by operating the operating piece connecting handle 13d once on each of the left and right sides.

After that, the remote controller 33c of the elevator 33 is operated to wind up the elevator chain 33a and raise the rail R held by the rail catch 1 to load it on the rail carrier 2, or pull out the elevator chain 33a to catch the rail. The rail R grasped by 1 is lowered and lowered to the site.

In the state shown in FIGS. 10 and 11, the working piece connecting handle 13d of the rail catch 1 is grasped and further pulled in the α direction on the upper side in FIG. 10, and the rail catch 1 is operated on the lower side in FIG. Even when the one-sided connecting handle 13d or the like is grasped and further pulled in the β direction, the connecting rod portion 13 abuts on the side ends of the plurality of rail catch support portions 11a or the rail catch guide plate 11a3 to rotate the rail catch body 12c. The movement is stopped, and the rail catch 1 is configured to reliably maintain the state in which the rail R is caught.

Therefore, even if the operator grabs the working piece connecting handle 13d or the like and pulls the connecting rod portion 13 too much, the rail catch 1 can surely maintain the state in which the rail R is caught. Workability is improved.

(When opening the rail R from the rail catch 1)
In FIGS. 12 and 13, of the four rail catches 1 in the rail carrier 2 of the embodiment, the rail R is opened in the intermediate rail catch 1 excluding the rail catches 1 at both ends in the longitudinal direction of the rail carrier 2, respectively. It is a partially enlarged cross-sectional plan view and a partially enlarged cross-sectional side view which shows the state which was done.

In this case, the operator rides on the rail carrier 2, and on the left and right sides of the rail R, on the upper side in FIG. 12, the rail catch body is pulled by grasping the working piece connecting handle 13d of the rail catch 1 and pulling it in the β direction. The 12c is rotated counterclockwise to move the rail catch protrusion 12c1 at the lower end of the rail catch body 12c to a position displaced from below the jaw of the rail R, while the lower side in FIG. 12 shows the operation of the rail catch 1. The rail catch body 12c is rotated clockwise by grasping the one-sided connecting handle 13d or the like and pulling it in the α direction, and the rail catch protrusion 12c1 at the lower end of the rail catch body 12c is displaced from the lower part of the rail R jaw. Move to.

As a result, as shown in FIG. 13, on the left and right sides of the rail R, the rail catch protrusions 12c1 at the lower end of the plurality of rail catch bodies 12c connected by the connecting rod portions 13 were avoided from below the jaw portion of the rail R. Since it moves to the position, even if it is a long rail R, the rail R can be released from the rail catch 1 and lowered at the site or the like by operating the operating piece connecting handle 13d once on each of the left and right sides.

In the state shown in FIGS. 12 and 13, the operation piece connecting handle 13d of the rail catch 1 is grasped and further pulled in the β direction on the upper side in FIG. 12, and the rail catch 1 is operated on the lower side in FIG. Even when the one-sided connecting handle 13d or the like is grasped and further pulled in the α direction, the connecting rod portion 13 abuts on the side ends of the plurality of rail catch support portions 11a or the rail catch guide plate 11a3 to rotate the rail catch body 12c. The movement is stopped, and the rail catching protrusion 12c1 at the lower end of the rail catch body 12c is configured to be able to maintain a position reliably avoided from below the jaw portion of the rail R.

Therefore, when the operator grasps the actuating piece connecting handle 13d or the like and pulls the connecting rod portion 13 until the connecting rod portion 13 comes into contact with the side ends of the plurality of rail catch support portions 11a or the rail catch guide plate 11a3. Since the rail catch 1 surely maintains the state in which the rail R is open, workability is improved in this respect as well.

<Main effects of the rail catch 1 and the rail carrier 2 of the embodiment>
As described above, in the rail catch 1 of the embodiment according to the present invention, a predetermined distance is provided between the long rail catch main body 11 extending in the longitudinal direction of the rail R to be caught and the rail catch main body 11 in the longitudinal direction. It is rotatably provided on both the left and right sides so as to sandwich the rail R to be caught at a plurality of places, and when it rotates and protrudes below the jaw of the rail R, the rail catching protrusion 12c1 that sandwiches the rail R A plurality of rotary rail catch portions 12 having an L-shaped rail catch body 12c provided, and a plurality of rotary rails provided at a plurality of locations at predetermined intervals in the longitudinal direction of the rail catch main body portion 11. A connecting rod portion 13 for connecting each of the catch portions 12 is provided.

Therefore, in the rail catch 1 of the embodiment according to the present invention and the rail carrier 2 adopting the rail catch 1, a plurality of rotary rails connected by the connecting rod portion 13 by operating the connecting rod portion 13 By rotating the catch portion 12 at a time, it is possible to catch the rail R and open the rail R.

As a result, according to the rail catch 1 of the embodiment according to the present invention and the rail carrier 2 adopting the rail catch 1, the number of workers who operate the rail catch 1 when loading and unloading the rail R is omitted. At the same time, it becomes possible to quickly perform the loading and unloading work of the rails, and the workability can be improved.

Further, in the rail catch 1 of the embodiment, by moving the connecting rod portion 13 in a certain direction, the rail catch bodies 12c of the plurality of rotary rail catch portions 12 connected by the connecting rod portions 13 can be moved at once. When the rail catching protrusion 12c1 of each rail catching body 12c is rotated so as to protrude below the jaw portion of the rail R to sandwich the rail R and catch the rail, the connecting rod portion 13 is further moved in the same direction. However, when the connecting rod portion 13 comes into contact with the rail catch support portion 11a and the rail catch guide plate 11a3 of the rail catch main body portion 11, the rotation of each rail catch body 12c is stopped, and the rail catch protrusion 12c1 becomes a rail. While it is configured to maintain the state in which R is sandwiched, by moving the connecting rod portion 13 in the opposite direction, the rail catch of the plurality of rotary rail catch portions 12 connected by each connecting rod portion 13 When the body 12c is rotated at once and the rail catching protrusion 12c1 of each rail catch body 12c is displaced from below the jaw portion of the rail R to open the rail R, the connecting rod portion 13 is further moved in the same opposite direction. However, when the connecting rod portion 13 comes into contact with the rail catch support portion 11a and the rail catch guide plate 11a3 of the rail catch main body portion 11, the rotation of each rail catch body 12c is stopped, and the rail catch protrusion 12c1 is generated. It is configured to keep the rails open.

Therefore, according to the rail catch 1 of the embodiment and the rail carrier 2 adopting the rail catch 1, when the operator grasps the operating piece connecting handle 13d or the like and pulls the connecting rod portion 13 in one direction too much. However, since the rail catch 1 reliably maintains the state in which the rail R is caught or opened, workability can be improved in this respect as well.

Further, in the rail catch 1 of the embodiment, the rail catch body 12c of each rotary rail catch portion 12 is provided with an actuating piece 12c2 for rotating the rail catch body 12c, and operates with the connecting rod portion 13. The piece 12c2 is connected to the operating piece connecting handle 13d, and the operating piece connecting handle 13d is erected from the connecting portion between the connecting rod portion 13 and the operating piece 13d so that the operator can grasp and operate the connecting rod portion 13. Therefore, not only the operator can directly grasp and operate the connecting rod portion 13, but also the operating piece connecting handle 13d standing upright from the connecting rod portion 13 can be grasped and operated, so that the connecting rod portion 13 can be operated. It is also possible to simultaneously grasp the operating piece connecting handles 13d on both sides of the rail R from one side of the rail R and move them in opposite directions, which also improves workability.

1 Rail catch 11 Rail catch main body 11a Rail catch support 11a1 Hook 11a2 Connecting bolt 11a3 Rail catch guide plate 11a31, 11a31 Inclined surface 11a4 Insertion hole 11b Rail catch support connecting part 11c Connecting bolt 11d Connecting nut 12 Rotating rail Catch part 12a Rotating shaft part 12a1 Retaining part 12a2 Retaining pin 12b Nut 12c Rail catch body 12c1 Rail catch protrusion 12c2 Actuating piece 13 Connecting rod part 13a Turn buckle member 13b Rod member 13b1 Rod member body 13b2 Male screw part 13b3 1st connecting piece 13c Working piece connecting member 13c1 2nd connecting piece 13c2 Connecting shaft 13d Working piece connecting handle 13d1 Fixing screw 2 Rail carrier 21 Wheels 3 Crane 31 Support 32 Horizontal rail 33 Elevator 33a Elevating chain 33b Hook 33c Remote control R rail

Claims (4)

It is a rail catch that is installed at the tip of the lifting chain of the crane mounted on the rail carrier and grips the rail.
A long rail catch body that extends in the longitudinal direction of the rail to be caught,
The rail is rotatably provided on both the left and right sides of the rail so as to sandwich the rail to be caught at at least both ends of the rail catch main body in the longitudinal direction, and the rail is projected by rotating and projecting below the jaw of the rail. A plurality of rotary rail catch portions having a rail catch body provided with a rail catch protrusion for sandwiching, and a plurality of rotary rail catch portions.
A connecting rod portion for connecting the rail catch bodies of each of the plurality of rotary rail catch portions provided at least at both ends in the longitudinal direction of the rail catch main body portion is provided.
By operating the connecting rod unit, and the same time by rotating the rail catch of each of the connecting rod of the plurality of rotating rail catch part connected in part, for the rail catch of each rail catch member A rail catch characterized in that a protrusion protrudes below the jaw of the rail to pinch the rail and catch the rail, or the protrusion for catching the rail is displaced from below the jaw of the rail to open the rail. In the rail catch according to claim 1,
The rail catch body of each of the plurality of rotary rail catch portions is provided with an operating piece on the opposite side of the rail catch protrusion via a rotation shaft portion which is a rotation shaft when rotating.
The connecting rod portion is connected to a tip portion of the operating piece that is separated from the rotating shaft portion.
Wherein by moving in one direction with the connecting rod portion, the said connecting rod portion simultaneously to rotate the concatenated plurality of rotating rail catch portion respectively of the rail catching body in each rail catch member catch rail by clamping the rail rail catch projections protrudes into the jaw below the rail, further when the connecting rod unit Before moving in the same direction, the tip end portion of the operating piece is the rail catch body portion The connecting rod portion connected to the tip end portion of the operating piece comes into contact with the rail catch main body portion to stop the rotation of each rail catch body, and the rail catching protrusion sandwiches the rail. While it is configured to stay in the same state
Wherein by moving the connecting rod portion in the opposite direction, the rail of the connecting rod portion simultaneously to rotate the concatenated plurality of rotating rail catch portion respectively of the rail catching body in each rail catch member opening the rail catch projection is Te displaced from the jaws under the rails, when Ru is further moved to the connecting rod portion in the same opposite direction, the actuating tip portion of the operating piece is closer to the rail catch body portion When the connecting rod portion connected to the tip end portion of the piece abuts on the rail catch main body portion, the rotation of each rail catch body is stopped, and the rail catching protrusion maintains the rail open state. A rail catch characterized by being configured in such a way. In the rail catch according to claim 2,
The connecting rod portion and the operating piece are connected by an operating piece connecting handle, and the operating piece connecting handle is formed between the connecting rod portion and the operating piece so that an operator can grasp and operate the connecting rod portion. A rail catch that is characterized by being erected from the connecting part. A rail carrier characterized in that the rail catch according to any one of claims 1 to 3 is provided at the tip of an elevating chain of a crane.

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