KR100598551B1 - equipment for net shape and joint of steel pipe - Google Patents

Abstract

The present invention relates to an orthopedic device for steel pipes having a diameter of 600 mm or more, and an object thereof is a quarter-shaped body bisecting the lower semicircular body left and right at both ends of the upper semicircular body bisected up and down in a hinged manner. By arranging the structure, neighboring adjacent steel pipes that are roughly aligned at the construction site can be held with minimal openness, so that the earth wall is installed in the soft ground, the harbor section, or even in the narrow narrow section of the trench in the rock area. It is to enable the shaping or forming of the steel pipe.

The present invention is connected to the backhoe (BH) or crane connected to the body 40 provided; In order to form a steel pipe (P) to the connecting body 40, two pairs are formed so as to slide on a concentric line, and the arc shaped body 11 divided into a plurality is connected so as to be opened and closed about the hinge 13. Forming a circle at the time of closing and having a plurality of pressurizing cylinders 16 radially installed on the arc body 11 and having a locking device 15; In the steel pipe orthopedic device including a retractor 20 is installed to move the shaper 10 relatively on the concentric line, the arc body 11 of the shaper 10 is an upper semi-circular body divided into two vertically 11a and a quarter-circle body 11b connected to both ends of the upper semi-circular body 11a through a hinge 13 and dividing the lower semi-circular body from side to side, with respect to the upper semi-circular body 11a. It is characterized in that the opening and closing cylinder 14 is connected to the connection portion of the upper semi-circular body (11a) and the quarter-circular body (11b) so that the quarter-circular body (11b) is opened and closed.

Steel pipe, round, orthopedic joint, retractor, welding machine

Description

{Equipment for net shape and joint of steel pipe}

Figure 1 is a schematic diagram of an embodiment showing the use of the orthopedic joint of the steel pipe according to the invention mounted on the heavy equipment backhoe,

2 is a front view of a state in which the outer shell is removed from the molding machine, which is an essential part of the present invention;

Figure 3 is a side view showing only the molding machine of the present invention,

4a and 4b is a detailed cross-sectional view showing an extract of the locking device provided in the molding machine of FIG.

5 is a front view showing a state in which the quarter-circular body is opened in the molding machine of FIG.

6a to 6e is a view showing for explaining the process of working by using the orthopedic joint of the steel pipe according to the present invention,

7a and 7b is a view showing that the welding robot is additionally installed in the molding machine of the present invention.

<Explanation of symbols for main parts of drawing>

10: forming machine 11: arc body 11a: upper semi-circular body

11b: quarter round body 13: hinge 14: cylinder

15: locking device 15a: cylinder body 15c: pin

16: pressure cylinder 17: slider 18,422: guide

20: retractor 30: welding robot 32: guide rail

33: welder 34: trolley 40: connecting body

41: upper body 41a: connecting pin 42: lower body

43: hydraulic motor

The present invention relates to an orthopedic fitting of a steel pipe having a diameter of 600 mm or more, and more particularly, to forming or forming an adjacent steel pipe after holding a neighboring adjacent steel pipe that is roughly aligned at a narrow construction site. It relates to the orthopedic device of the steel pipe that the ends of the abutment or can be inserted into each other.

In general, steel pipes having a diameter of 600 mm or more are used for line pipes, oil pipes, water pipes, and the like, and the steel pipes are manufactured by a roll bending method and a spiral method. The roll bending method is obtained by bending a rectangular steel sheet to form a circular cross section using a plurality of rolls, and then welding the steel sheet in the direction of the length (center line) of the tube which the ends of the steel sheet are brought into contact with. It is obtained by welding while twisting together in the form of winding.

All the manufacturing methods of these steel pipes are very difficult to obtain round steel pipes in the production method when the thickness of the plate is thick. In the end, the round pipes are deformed, not round, and are constructed by butt joints due to the tolerance of the steel pipes. There was a problem that the construction can not be achieved properly.

Proposed by the present applicant in order to solve this problem is disclosed in Korean Patent Publication No. 10-0440185 "steel tube shaping device", the feature is that the connection body is connected to the working arm end of the backhoe is provided The semicircular body divided into left and right on the movable slide in the connecting body is provided to be opened and closed about the hinge of the upper end, and a plurality of pressurized cylinders are radially arranged toward the center on a pair of semicircular bodies forming two circles. will be.

Since the registered patent is configured to be installed on a backhoe or a crane which is heavy equipment, the semi-circular body is opened by holding a semi-circular body centered around the hinge at the top of a neighboring adjacent steel pipe that is roughly aligned at a construction site. The radially arranged pressure cylinders were used to form and shape in a circular shape and to be connected by pulling the ends of adjacent steel pipes to abut or to be inserted into each other.

However, in the registered patent as described above, since the semi-circular body is to hold the steel pipe by opening the hinge at the top, at least the joint portion to form and connect the steel pipe should be made to be two to three times wider than the diameter. In case of installing earth wall in soft ground or harbor section, or especially in rock area where it is difficult to dig, dig at minimum width considering several times of construction cost and construction period. There was a problem that the joint operation is difficult.

An object of the present invention is to research and develop to solve the conventional problems as described above, the quarter-circular body bisecting the lower semicircular body to the left and right at both ends of the upper semicircular body divided up and down is connected to the hinged manner to open and close By providing a molding machine, neighboring adjacent steel pipes that are roughly aligned at the construction site can be held with minimal openness.This is why the installation of earth walls in soft grounds, harbor sections, or narrow narrow sections of trenches in rock zones. In the present invention is to provide a steel pipe shaping device to enable the shaping or forming work of the steel pipe.

Another object of the present invention is to provide a plurality of hydraulic cylinders radially in the upper semi-circular body and the left and right quarter-circular body of the arc body forming one circle, the arc body is provided with a plurality of retractors to be relatively towed without bias And by providing a welding robot that can be welded to the outer joint of the steel pipe, as well as forming the end of the steel pipe as well as towing or inserting adjacent adjacent steel pipes, welding can be performed, thereby forming and jointing the steel pipe And to provide an orthopedic joint of a steel pipe to prevent industrial accidents during welding work.

The present invention for achieving the object as described above, the connecting body provided to be connected to the working arm end of the crane or backhoe; Two pairs are formed so as to form a steel pipe on the connecting body and are slid on a concentric line, and the arc body divided into a plurality is connected to open and close around a hinge to form a circle when closed, and the arc body A molding machine provided with a plurality of pressurized cylinders radially and provided with a locking device; In an orthopedic joint of a steel pipe comprising a retractor connected to move the forming machine relatively on a concentric line, the arc body of the forming machine is the upper semi-circular shape of the upper center portion is slidably connected to the connecting body and formed of a single arc structure. A body and a quarter-circular body each of which is connected to both lower ends of the upper semi-circular body by a hinge and bisecting the lower semi-circular body from side to side; Each of the cutter circular bodies is formed with a chamfer formed in the direction that the inner surface is provided with the locking device is removed in the direction of the steel pipe insertion so as not to be caught in the steel pipe when moving in the open state to hold the steel pipe;
The opening and closing cylinder is connected to the connection portion of the upper semi-circular body and each quarter-circular body so that the quarter-circle body is opened and closed with respect to the upper semi-circular body, and the opening-closing cylinder and the pressurizing cylinder do not protrude out of the outer circumferential surface of the arc-shaped body. Orthopedic device of a steel pipe, characterized in that installed to be located on the inside of the.

The connecting body has a lower body rotatably provided with respect to the upper body, a hydraulic motor is mounted on one side of the upper body, and the first driving gear and the second driving gear of the lower body are engaged with the output shaft of the hydraulic motor. The lower body is characterized in that the guide is coupled to the slider of the molding machine.

The arc body may be provided with a welding robot for welding the outer joint of the steel pipe, the welding robot is formed integrally with a guide rail to form a circle on one side of the arc body, the guide rail is moved by a drive source of the trolley The welder can be welded while being installed.

Or less, on the basis of the accompanying drawings, the shaping device of the steel pipe according to the present invention will be described.

Figure 1 is a schematic diagram of an embodiment showing a state using a steel pipe orthopedic joint according to the invention mounted on a heavy equipment backhoe, Figures 2 to 5 illustrate a steel pipe orthopedic device according to the present invention in FIG. Figures 6a to 6e are shown for explaining the process of working using the orthopedic joint of the steel pipe according to the present invention.

As shown in the figure, the present invention, the orthopedic joint is installed at the end of the working arm (R) of the backhoe (BH) is connected to and controlled by the hydraulic line of the backhoe (BH), and the production process of the steel pipe (P) It is a device for molding and inserting the end portion of the steel pipe (P) deformed in the process of transport to unloading construction site to a predetermined roundness.

The orthopedic device uses a connecting body 40 for connection with the working arm R end of the backhoe BH and an arc body divided into a plurality of the connecting body 40 to form a steel pipe P. And a retractor 20 for pulling and inserting adjacent steel pipes P formed adjacent to each other formed by the shaper 10.

In other words, the orthopedic device is rotated about the hinge 13 so as to hold each end portion of the adjacent steel pipe (P) adjacent to each other, when the open and retracted arc shaped body 11 ) Is provided, the arcuate body (11) provided in each of the orthopedic devices provided in pairs may be provided as a unit, in this case, the orthopedic device is guided by the guide 18 along the center line direction of the steel pipe (P) While forming a unit by the retractor 20 is installed in the center of the steel pipe and connected concentrically stretchable.

The connecting body 40 is for connecting to the end of the working arm (R) of the backhoe (BH) is provided with a connecting pin (41a) on the upper body 41, the lower body (b) with respect to the lower part of the upper body (41) 42 is rotatably provided. A hydraulic motor 43 is mounted on one side of the upper body 41, and the first driving gear 431 and the second driving gear 421 of the lower body 42 are mounted on the output rotation shaft of the hydraulic motor 43. Is engaged, a guide 422 is provided at the lower end of the lower body 42 to connect the shaper 10 in a movable state.

The shaper 10 is provided with two sliders 17 which are movably coupled to the guide 422 of the connecting body 40, and the upper center portion is slidably connected to the slider 17 and has a single arc-shaped structure. The upper semi-circular body (11a) is formed and the quarter circular body (11b) bisecting the lower semi-circular body (left and right) on both ends of the upper semi-circular body (11a) is connected through the hinge (13), the upper semi-circular body ( An opening / closing cylinder 14 is connected to the connecting portion of the upper semicircular body 11a and the quarter circular body 11b to open and close the quarter circular body 11b with respect to 11a).
Here, the opening and closing cylinder 14 is preferably installed to be located inside the arc-shaped body 11 so as not to protrude out of the outer peripheral surface of the arc-shaped body (11).

A locking device 15 is provided at the end of the quarter circular body 11b to prevent the quarter circular body 11b from opening when the ends thereof come into contact with each other to form a circular shape.
Wherein each of the cutter circular body (11b) is inserted into the steel pipe so that the inner surface provided with the locking device 15 is not caught on the outer surface of the steel pipe (P) when moving in the open state to hold the steel pipe as shown in Figure 6a Chamfer (chamfer) portion 12 of the shape is deleted.

In the arc body 11 of the shaper, that is, the upper semicircular body 11a and the quarter circular body 11b, a plurality of pressure cylinders 16 are radially arranged so as to individually or simultaneously press toward the center thereof. In other words, the piston rod 16a of the pressure cylinder 16 may be drawn out and returned toward the center of the shaper 10.
In particular, the pressure cylinder 16 is installed to protrude inward from the inside of the arc body 11 so as not to protrude out of the outer circumferential surface of the arc body (11) to reduce interference with the outer circumferential structure.

In addition, the forming machine 10 is a slider which is installed at a predetermined interval by two pairs in the guide 422 of the connecting body 40 so as to be installed at each end of each adjacent steel pipe (P) adjacent to each other ( 17 is provided together with, the upper semi-circular body (11a) and the quarter-circular body (11b) constituting the shaper 10 is installed to be movable in the direction of the center axis of the shaper (10) by the guide member (18). have.

The locking device 15 is provided with a cylinder body 15a at one end of the quarter-shaped body 11b and a pin 15c at the end of the piston rod 15b, and the cylinder body 15a is mounted. When the quarter circular body 11b is retracted around one of the hinges 13 on both sides of the upper semicircular body 11a, the other end of the quarter circular body 11b is not formed. One end portion is provided with a bracket 11c overlapping each other, and the bracket 11c has an end portion and the bracket of the quarter circular body 11b so as to penetrate when the pin 15c is drawn together with the piston rod 15b. Fixing holes 101 and 102 are formed in 11c.

The guide 422 of the connecting body 40 and the slider 17 of the shaper 10 are shown as a dovetail type coupling portion, but in addition, the length of the guide body and the slider in the coupled state without being separated. Any shape may be used as long as the shape moves in the direction.

The retractor 20 is a plurality of hydraulic cylinders installed to form a unit of a pair of forming machines 10 installed at the end of the adjacent steel pipe (P) adjacent to each other, which is the retractor 20 is the upper When the semi-circular body (11a) and the quarter-circular body (11b) is one circular, it is preferable to arrange at a uniform angle (equal angle) to be pulled at the same time. The reason is that the steel pipe P is towed to one side without bias. In addition, the retractor 20 is the end of the cylinder body (20a) is connected to one of the forming machine 10, the end of the piston rod (20b) is connected to the other forming machine (10).

The retractor 20 is illustrated and described as being unitized with a pair of forming machines 10, but as a separate turnbuckle or chain block outside the adjacent steel pipes P adjacent to each other. It can also be prepared and used.

It will be described in detail the process of forming and connecting the steel pipe on the basis of the orthopedic joint of the steel pipe according to the present invention configured as described above.

First, the steel pipe (P) to be connected in the state in which the clamp is mounted on the end of the working arm (R) of the backhoe (BH: heavy equipment) is as straight as possible in the longitudinal direction and is aligned adjacently. The steel pipe (P) is produced by a roll bending method or a spiral method, and the length is 6m, 9m, 12m, there are three types, if the steel pipe (P) is selected and used in accordance with the length of the steel pipe (P) to be constructed do.

Thereafter, as shown in FIG. 1, when the present invention is equipped with an orthopedic device installed on the working arm R of the backhoe BH, and the piston rod is extended by operating the opening / closing cylinder 14 of the forming machine 10, As shown in FIG. 5, at both ends of the upper semicircular body 11a, the quarter circular body 11b is opened to the outside about the hinge 13. At this time, the center line direction of the forming machine 10 should match the longitudinal direction which is the center line direction of the steel pipe (P).

As such, the process of matching the center line direction between the shaper 10 and the steel pipe P is performed by driving the hydraulic motor 43 on the upper body 41 constituting the connecting body 40 to drive the first drive of the hydraulic motor 43. The second driving gear 421 of the lower body 42 meshed with the gear 431 is rotated in conjunction with each other, and thus, together with the slider 17 coupled to the guide 422 of the lower body 42, the shaper ( 10) is rotated so that the center line direction of the steel pipe (P) and the forming machine 10 can be matched in a straight line.

In this state, a pair of molding machines 10 are positioned to lower the ends of adjacently aligned steel pipes P, as shown in FIGS. 6A and 6B, and then the opening and closing cylinder 14 is operated again to operate the piston. When the rod is retracted, as shown in Fig. 6C, the quarter-circular body 11b is retracted into the shape of one circle on the upper semi-circular body 11a. At this time, the pressure cylinder 16 of the arc-shaped body 11 is not operated because the quarter-shaped body 11b should be operated after the lock is made.

In this way, the quarter-circular body 11b is lifted into a single circle to the upper semi-circular body 11a to operate the locking device 15 at the end portion of the quarter-circular body 11b, thereby contacting the quarter-circular body at the upper semi-circular body 11a. Make sure that (11b) is locked away from each other. Specifically, when the piston rod 15b of the cylinder 15a is extended and operated, as the pin 15c at the end thereof protrudes together with the piston rod 15b, the quarter circular body 11b as shown in FIG. 4B. Quarter circular bodies 11b are locked to each other because they fit through the fixing holes 101 and 102.

After the quarter circular body 11b is locked by the locking device 15 as described above, as shown in FIGS. 6C and 6D, a plurality of pressure cylinders 16 are radially installed on the arc body 11 constituting the shaper 10. Is operated to extend the piston rod 16a. As such, when the piston rod 16a of the pressure cylinder 16 is extended toward the inner center of the arc body 11 of the shaper 10 and the steel pipes P adjacent to each other are gripped, the steel pipes P adjacent to each other are It will stay horizontal or straight. The reason is that the pair of forming machines 10 are connected in a straight line by the guide 18 and the slider 17.

In addition, it is preferable to selectively operate all or part of the pressurized cylinder 16. The reason for this is that when the pressure cylinder 16 is selectively operated, only the pressure cylinder 16 in a position drawn outward from the imaginary circle will be adjusted to form a pressurized part while pressing the molded part.

As such, by operating the pressure cylinder 16 of the molding machine 10 such that the piston rod end forms an imaginary circle, end portions of adjacent steel pipes P adjacent to each other are formed and adjusted to a predetermined circle.

After molding and shaping to a predetermined roundness as described above, when the piston rod 20b of the retractor 20 to which the pair of molding machines 10 is connected is operated to be reduced, as shown in FIG. 6E, the pair of molding machines 10 is relatively It is pulled into and close to each other, so that the steel pipes (P) adjacent to each other in a state aligned horizontally or in a straight line are towed. At this time, the upper semi-circular body (11a) and the quarter-circular body (11b) of the shaper (10) guides the slider 17 along the guide (422) of the connecting body 40 and connects a pair of the shaper (10) Guided by the guide 18.

In other words, the retractor 20 connected to the pair of forming machines 10 is operated to pull one of the steel pipes P to be constructed among the neighboring steel pipes P, and the socket PS of the steel pipes P is pulled out. The end of the steel pipe (P) adjacent to the adjacent) is relatively easily inserted while being pulled.

The reason for the simple insertion is that the end portions of the neighboring steel pipes P are molded to a predetermined roundness by the shaper 10 so that they can be inserted smoothly and easily without any problem.

After the end portions of adjacent steel pipes P adjacent to each other are inserted and coupled to each other, the inner or outer surface joints of the steel pipes P are welded and rust-treated to finish.

After finishing the insertion work of the end of the steel pipe (P) in this way, as in the case of locking the locking device 15 described above, by operating the cylinder (15a) so that the piston rod (15b) is contracted, the pin of the end As the 15c is retracted together with the piston rod 15b, it is released from the fixing holes 101 and 102 of the quarter circular body 11b, thereby releasing the locking of the quarter circular body 11b from the upper semicircular body 11a. do.

After the lock is released in this way, when the opening and closing cylinder 14 is operated so that the piston rod 14a is contracted, the quarter-circular body 11b is formed at both ends of the upper semicircular body 11a of the molding machine 10. After opening the working arm (R) of the backhoe (BH) to the upper, and then operate the retractor 20 to extend the piston rod (20a), the shaper (10) is returned to its original position Prepare for the next task in the state.

7a and 7b is a view showing that the welding robot is installed in the orthopedic joint of the present invention, the welding robot 30 is provided on one of the forming machine 10, the welding robot 30 is the forming machine 10 An arc-shaped guide rail 32 having a concentric shape is provided on one side of the arc-shaped body 11 of the arc-shaped body 11, and a welder 33 which can be welded while being moved by a drive source of the trolley 34 is provided. .

The guide rail 32 of the welding robot 30 is divided into an upper semicircular body 11a and a quarter circular body 11b of one molding machine 10 and provided to form a circle. In other words, the guide rail 3 should form a circle so that the welder can move along the arc body when the arc body is retracted to form a circle.

The welder 33 has been described as being moved along the guide rail 32 by the trolley 34, but in addition to having a self-driving means and a low driving error, for example, what if a carriage (carriage) is adopted? It is okay.

According to another embodiment configured as described above, the sockets PS of the steel pipe P by molding, shaping and towing end portions of the steel pipes P adjacent to each other adjacent to each other by a method as described above to have a predetermined roundness. After the end of the steel pipe (P) adjacent to the adjacent to be inserted to pull relatively, the process of releasing and separating the shaper 10 is the same, so the specific description thereof will be omitted. After that, as shown in Figure 7a, to the end of the steel pipe (P) or other steel pipe (P) inserted into the socket (PS) of the steel pipe (P), using a welding machine 33 of the welding robot 30 Weld automatically.

The welding process is a welding robot (30) installed on the welding robot 30, ie, the trolley (34) on the guide rail (32), installed on the upper semicircular body (11a) of the forming machine (10) installed on the outer surface of the steel pipe (P). Is welded to the outer surface of the steel pipe (P) while moving upward from the lower portion of the outer surface of the steel pipe (P) along the guide rail (32). In other words, the welding process is completed by repeating the welding process going up from the bottom of the steel pipe P to the top two or more times.

Although the description of the method of inserting the orthopedic joint of the steel pipe according to the present invention by using only the steel pipe (P) formed with a socket (PS) at one end in the above, but abuts so that the outer peripheral surface of the end of the neighboring steel pipe (P) to match It would be natural to be able to perform state-butt joints.

In the case of the butt joint method as described above, after welding by using a welding robot or a welding machine in a state where the ends of adjacent steel pipes are contacted by the shaper 10 and the retractor 20, the main welding may be performed. The temporary welding may be performed in a state in which the steel pipe does not fall or is supported by other equipment even when the orthopedic device is removed.

And the orthopedic joint device of the steel pipe according to the present invention is shown and described to be used only by mounting the working arm (R) of the backhoe (BH) which is one of the heavy construction equipment, it is obvious to those skilled in the art to use it mounted on a crane or the like. It will naturally belong to the scope of the present invention.

As described above, the orthopedic joint of the steel pipe according to the present invention, by providing a forming machine that is connected to the quarter-circular body bisected by the lower semicircular body to the left and right in a hinged manner at both ends of the upper semicircular body divided into two vertically Neighboring neighboring steel pipes that are roughly aligned at the construction site can be held with minimal openness, which is why the installation of earth walls in soft grounds and port sections, or the formation of steel pipes in narrow narrow sections of trenches in rock areas It is a useful invention that makes the molding work possible.

In addition, a plurality of hydraulic cylinders are provided radially on the upper semi-circular body, which is an arc body forming a circle, and on the left and right quarter-circle bodies, and a plurality of retractors are provided so that the arc body is towed relatively without bias and at the outer joint of the steel pipe. By providing a welding robot capable of welding, the welding work can be carried out after the steel pipe ends are pulled, but adjacent to the adjacent steel pipes to be oriented or inserted. It is a useful invention that can prevent safety accidents.

Claims (4)

Connection body 40 is provided to be connected to the end of the working arm (R) of the crane or backhoe (BH); In order to form a steel pipe (P) to the connecting body 40, two pairs are formed so as to slide on a concentric line, and the arc shaped body 11 divided into a plurality is connected so as to be opened and closed about the hinge 13. Forming a circle at the time of closing and having a plurality of pressurizing cylinders 16 radially installed on the arc body 11 and having a locking device 15; In the orthopedic joint of the steel pipe comprising a retractor 20 connected to move the forming machine 10 relatively on the concentric line, The arc body 11 of the shaper 10 has an upper semi-circular body 11a formed of a single arc-shaped structure with an upper center portion slidably connected to the connecting body 40, and both lower ends of the upper semi-circular body 11a. It is composed of a quarter-shaped body (11b) each connected through the hinge 13 and made of a structure that bisects the lower semi-circular body to the left and right; Each of the cutter circular bodies 11b is a chamfer of the shape in which the inner surface provided with the locking device 15 is removed in the steel pipe insertion direction so as not to be caught by the steel pipe P when moving in the open state to hold the steel pipe. Part 12 is formed; Opening and closing cylinders 14 are connected to the connection portions of the upper semicircular body 11a and the respective quarter circular bodies 11b to open and close the quarter circular body 11b with respect to the upper semicircular body 11a. 14) and the pressurized cylinder (16) is an orthopedic device of the steel pipe, characterized in that installed so as not to protrude out of the outer peripheral surface of the arc body (11) inside the arc body (11). The method of claim 1, The connecting body 40 is provided with a lower body 42 rotatably with respect to the upper body 41, the hydraulic motor 43 is mounted on one side of the upper body 41 and the output rotation shaft of the hydraulic motor 43 The first driving gear 431 and the second driving gear 421 of the lower body 42 are engaged with each other, and the lower body is an orthopedic joint of a steel pipe, characterized in that the guide is coupled to the slider of the forming machine. Device. The method according to claim 1 or 2, The arc forming body of the forming machine 10, the welding device for steel pipes, characterized in that the welding robot 30 is provided for welding the outer joint of the steel pipe (P). The method of claim 3, The welding robot 30 is provided with an arc-shaped guide rail 32 so as to form a circle on one side of the arc body 11, that is, the upper semi-circular body 11a and the quarter-circular body 11b, which is the forming machine 10. Guide rail 32 is a forming device for a steel pipe, characterized in that the welder 33 which can be welded while being moved by the drive source of the trolley 34 is installed.

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