JP3170533U - Traveling cart - Google Patents

Abstract

A traveling carriage capable of reducing maintenance inspection work for a magnet is provided. SOLUTION: A magnet 8a arranged in a casing 1 is brought close to a steel plate and a large attracting force is applied to increase the tractive force, and the magnet is separated from the steel plate to reduce the attracting force so as to reduce the tractive force. The traveling carriage A is a casing 1 in which a bottom plate 10 made of a non-magnetic material is attached to the bottom surface to provide a storage space 9, a magnet 8a stored in the storage space, and a casing fixed to one side surface of the magnet. The handle 8b is configured to extend from the side surface to the outside and extend upward, and is disposed to face the corner 8g between the side surface 8f and the upper surface 8h of the magnet stored in the storage space, and regulates the posture of the magnet. When the handle is lifted, one side surface of the magnet is separated from the bottom plate and the corner portion 8g is regulated by the regulating member and is inclined with respect to the bottom plate, and a force in the lifting direction is generated. When not, the suction surface is in contact to the bottom plate. [Selection] Figure 5

Description

  The present invention relates to a traveling carriage that mounts a torch such as a welding torch or a cutting torch and travels on a steel plate and welds or cuts a workpiece in this process.

  A welding torch or a cutting torch is mounted on a traveling cart, and the mounted torch is operated along with the traveling of the traveling cart to perform welding or cutting on the steel sheet. Such a traveling cart needs to exert a large traction force in order to tow a hose and a power cord connected to the mounted torch.

  In welding or cutting performed using a traveling carriage, each work site has a relatively short length, and generally, a target work is performed on many work sites. For this reason, after the welding or cutting with respect to the target work site is completed, the traveling carriage is frequently moved to the next work site. In this case, the traveling carriage is generally lifted and transported by an operator, and does not require traction.

  The applicant of the present application has proposed a traveling carriage that can easily exhibit a large traction force during work and a decrease in traction force during transportation as described above (see, for example, Patent Document 1). In this technique, a magnet is rotatably mounted on a shaft provided on a traveling carriage, and an operator operates a lever to rotate the magnet so that the magnet is substantially horizontal and close to the workpiece. The traction force is increased by applying the attraction force, or the traction force is decreased by tilting the magnet to decrease the attraction force.

JP 2009-028753 A

  In the traveling cart described in Patent Document 1, since the magnet is rotatably supported on the shaft, smooth rotation can be realized according to the operation of the lever. However, since it has a rotating part centered on the shaft, periodic maintenance and inspection of the bearing portion is necessary, and there is a possibility that a problem that the maintenance and inspection work is complicated.

  An object of the present invention is to provide a traveling carriage capable of reducing maintenance inspection work for a magnet.

  In order to solve the above-mentioned problem, the traveling cart according to the present invention increases the traction force by bringing a magnet arranged in the casing close to the steel plate and applying a large suction force, and separating the magnet from the steel plate to increase the suction force. A traveling carriage in which the traction force is reduced by reducing the casing, wherein a bottom plate made of a non-magnetic material is attached to the bottom surface, and a casing is provided with a magnet storage space whose bottom portion is defined by the bottom plate; The magnet placed on the bottom plate and stored in the storage space, and one end thereof is fixed to one side surface of the magnet, and the other end portion is extended from the side surface of the casing to the outside to reach the upper side of the casing. A handle configured as described above, and a storage space provided in the casing, and disposed opposite to a corner of the other side surface and the upper surface of the magnet stored in the storage space. And when a force in the lifting direction is applied to the handle, one side surface of the magnet is separated from the bottom plate and the other side surface and the corner of the top surface are regulated by the regulating member. Thus, when the attracting surface is inclined with respect to the bottom plate and no force in the lifting direction is applied to the handle, the attracting surface of the magnet can be brought into contact with the bottom plate over substantially the entire surface.

  In the traveling carriage, it is preferable that the magnet is stored in a freely movable position relative to a storage space provided in the casing.

  Further, in any one of the traveling carriages, the restricting member includes a corner portion where a corner portion between the other side surface and the upper surface of the magnet contacts, and an upper surface contact portion where the upper surface of the magnet contacts when the magnet is inclined. A vertical contact portion where a corner portion between the other side surface and the upper surface of the magnet contacts when the magnet is tilted, and a corner portion between the other side surface and the upper surface of the magnet is a corner portion of the regulating member. Alternatively, the movement of the magnet in the side surface direction is regulated by contacting with the elevation surface contact portion, and the inclination of the magnet can be regulated by the upper surface of the magnet coming into contact with the upper surface contact portion of the regulating member. Preferably it is.

  In the traveling carriage according to the present invention, the magnet is stored in a free state in a storage space of a casing having a bottom plate made of a non-magnetic material on the bottom, and the magnet is desired by operating a handle attached to the magnet. Can be in the posture. That is, when no force in the lifting direction is applied to the handle, the magnet is placed parallel to the bottom plate. For this reason, a large attracting force can be applied with the air gap between the attracting surface of the magnet and the steel plate being minimized, and thereby a large traction force can be exerted.

  In addition, when a force in the lifting direction is applied to the handle, the magnet is detached from the bottom plate. At this time, the corner portion (hereinafter simply referred to as “corner portion”) between the side surface opposite to the handle of the magnet and the top surface is regulated. Since the magnet is restricted by the member, the magnet is inclined with the handle side spaced apart from the bottom plate. For this reason, the air gap between the attracting surface of the magnet and the steel plate can be increased to propose the attracting force, thereby reducing the traction force (hereinafter, the attracting force and the traction force may be used as the same meaning). Can do.

  In the traveling vehicle according to the present invention, since the magnet that can be freely changed in posture is brought into contact with the regulating member and the magnet is inclined, there is no rotating portion. For this reason, it is possible to eliminate periodic lubrication, replacement of parts, etc., and maintenance work can be easily performed. In addition, since there is no rotating part, no shaft or bearing is required, the number of parts can be reduced, and there is no problem with failure of these parts.

  Further, since the regulating member has the corner, the upper surface contact portion, and the elevation contact portion, even if the magnet moves in the side surface direction, the corner portion can be regulated by contacting the corner portion. Further, when the magnet is inclined, the degree of this inclination can be regulated by the upper surface of the magnet coming into contact with the upper surface contact portion.

It is the front view and left view explaining the structure of a traveling trolley | bogie. It is the front view and right view explaining the structure of a traveling trolley | bogie. It is the left view and top view explaining the structure of a traveling vehicle. It is a figure explaining the state of the attitude | position where a magnet is parallel with respect to a baseplate. It is a figure explaining the state of the attitude | position which the magnet inclined with respect to the baseplate.

  Hereinafter, the configuration of the traveling carriage A according to the present embodiment will be described with reference to the drawings. In this embodiment, the traveling carriage A is configured as a welding carriage for welding two steel plates (not shown). In particular, one of the two sheets is arranged horizontally and the other is arranged in a regular manner so that fillet welding can be performed at a portion where the steel plates intersect each other.

  Accordingly, a welding torch (not shown) is attached to the torch holder 27, and a hose for supplying gas, a hose through which a welding line passes, and a hose such as a power cord are connected to the welding torch. Further, the torch to be attached to the torch holder 27 is not limited to the welding torch but can be attached even with a cutting torch such as a gas cutting torch or a plasma cutting torch. In this case, a mechanism or member peculiar to the selected cutting torch, such as a valve mechanism for supplying gas or a relay member for a cap tire cable for energizing, is mounted at a predetermined position of the traveling carriage A, and is necessary. A hose for supplying various gases and a hose such as a power cord are connected.

  For this reason, it is necessary to pull the hoses when performing the welding operation or the cutting operation, and a sufficiently large traction force is required to pull these hoses. In the present invention, by making the magnet 8a parallel to the steel plate, a large attractive force is exerted to exert a large traction force, and the magnet 8a is inclined to the steel plate, thereby reducing the attractive force. It is configured to reduce traction by making recommendations.

  First, the overall configuration of the traveling carriage A will be briefly described. The traveling carriage A shown in FIGS. 1 to 3 is configured to be able to travel in the directions of arrows a and b (hereinafter, the direction of arrow a may be forward and the direction of arrow b may be backward). The welding torch that is not operated is driven to perform the intended welding.

  The traveling carriage A has a casing 1 whose upper part is covered by a cover 1a and whose lower part is closed by a bottom plate 10 made of a non-magnetic material, and a driving motor (not shown) and the driving motor are controlled inside the casing 1. A control unit is incorporated.

  A plurality of wheels 2 are rotatably arranged at both ends in the front-rear direction, which is the traveling direction of the casing 1. At least one of the wheels 2 is configured as a drive wheel driven by a drive motor, and the other wheel 2 is configured as a driven wheel. However, the number of wheels 2 to be used as drive wheels is not limited, and two wheels or four wheels may be configured as drive wheels.

  On the upper surface of the cover 1a, there are a socket 3 for connecting a power cord, a push button switch 4 for operating the traveling cart A, a dial 5 for adjusting the traveling speed of the traveling cart A, and the traveling cart A. An LED 6 for displaying the operation mode is provided.

  On one side surface of the casing 1 (the side surface in the direction of arrow c, hereinafter referred to as the left side surface of the traveling carriage A. The side surface in the direction of arrow d may also be referred to as the right side surface of the traveling carriage A) Guide rollers 7a are arranged at both ends in the front-rear direction. Each of these guide rollers 7a is rotatably provided at the tip of an arm 7b configured to be extendable and contracted. When performing fillet welding, the guide rollers 7a are in contact with the surface of the steel plate arranged in the vertical direction. It is comprised so that driving | running | working of the traveling cart A can be guided.

  Further, as shown in FIG. 2 (b), a magnet 8a configured to change its posture in accordance with the operation of the handle 8b is disposed inside the casing 1, as will be described later. When the magnet 8a is inclined as shown by a dotted line in FIG. 2 (a), the attractive force with respect to the steel plate is reduced so that the traveling carriage A can be easily separated from the steel plate. When parallel to the steel plate, the attraction force is maximized and a large traction force is exhibited.

  In the traveling carriage A configured as described above, the push button switch 4 is pushed and operated in the state in which the magnet 8a is parallel to the steel plate and the attractive force is increased, so that the direction of the arrow a or the arrow b is increased. Start running. Then, the traveling speed of the traveling carriage A can be adjusted by operating the dial 5.

  A torch adjusting device that adjusts the position of the torch is provided at any end in the front-rear direction of the casing 1 that constitutes the traveling carriage A (the front end in this embodiment). It is configured so as to be arranged on the side surface on the arrow c direction side in the approximate center of A. Accordingly, when the traveling carriage A is viewed from the arrow b direction side toward the arrow a direction side, as shown in FIG. 3A, the handle 8b for operating the magnet 8a is disposed on the right side surface, and the torch is disposed on the left side surface. Will be placed on the side.

  A mounting bracket 20 is attached to the front end portion of the casing 1 with screws 21. The mounting bracket 20 is formed with a long hole 20a in the vertical direction, and a screw 21 is inserted into the long hole 20a and fastened to the casing 1. Therefore, the mounting bracket 20 is configured to be able to adjust the vertical position with respect to the casing 1.

  As shown in FIG. 2B, the screw shaft 22 serving as a shaft member constituting a torch in / out adjusting portion for adjusting the position of the torch in and out of the upper end portion of the mounting bracket 20 in the directions of arrows c and d is horizontal. Is provided. When the mounting bracket 20 is attached to the casing 1 constituting the traveling carriage A, the screw shaft 22 is arranged in parallel with a line connecting the centers of the wheels 2. A handle 22a is fixed to an end portion of the screw shaft 22 protruding from the mounting bracket 20, and the handle 22a can be rotated by operating the handle 22a. A bracket 23 is screwed to an end portion of the screw shaft 22 arranged inside the mounting bracket 20 so that the screw shaft 22 can move in the direction of the arrow c or the arrow d according to the rotation of the screw shaft 22. It is configured.

  It is also possible to use a shaft in which a rack is formed instead of the screw shaft 22. In this case, a pinion is disposed on the bracket 23.

  The bracket 23 includes a horizontal piece 23a and a hanging piece 23b. The horizontal piece 23a is formed in the extending direction of the screw shaft 22, and the hanging piece 23b is formed to hang in the direction perpendicular to the horizontal piece 23a. The dimensions of the horizontal piece 23a and the drooping piece 23b are not particularly limited, and are preferably set as appropriate according to specifications set as a welding device or a cutting device.

  At a predetermined position of the horizontal piece 23a that constitutes the bracket 23, a support portion that rotatably supports the screw member 24 that constitutes the torch angle adjusting portion is provided. In addition, at a predetermined position of the hanging piece 23b, a rotating shaft 23c that rotatably supports the rotating member 25 constituting the torch angle adjusting unit is disposed in the horizontal direction.

  The rotating member 25 is rotatably supported by a rotating shaft 23c provided on the hanging piece 23b of the bracket 23. Therefore, the rotation member 25 is configured to be rotatable around the rotation shaft 23c in a vertical plane. In addition, a long hole 25a is formed in the rotation member 25 at a position separated from the rotation shaft 23c and corresponding to the screw member 24 provided in the horizontal piece 23a. A nut member 26 that is screwed with the member 24 is disposed. Further, a support arm 25b is formed to protrude from a surface corresponding to the long hole 25a of the rotating member 25 and corresponding to the rear side of the traveling carriage A.

  As described above, the nut member 26 is configured to be able to move along the elongated hole 25 a as the rotating member 25 rotates. That is, the screw member 24 is disposed so as to penetrate the horizontal piece 23a of the bracket 23 in the substantially vertical direction, and is screwed through the nut member 26 in the vertical direction. When the screw member 24 is rotated by operating the handle 24a, the net member 26 is raised or lowered along with the rotation, and the rotating member 25 is rotated about the rotating shaft 23c. For this reason, the distance between the center of the nut member 26 and the rotation shaft 23c changes, and this change can be absorbed by the elongated hole 25a.

  A torch holder 27 is attached to a support arm 25 b provided on the rotating member 25. The torch holder 27 holds a welding torch and cutting torch (not shown) (welding torch in the present embodiment) and has a function of blocking heat radiation generated during welding and cutting and preventing it from being transmitted to the carriage. It is formed in a groove shape having a pair of upright pieces 27a and 27b and a connecting piece 27c for connecting the upright pieces 27a and 27b.

  An attachment member 28 for detachably attaching a torch (not shown) is provided at a predetermined position of the connecting piece 27c. The attachment member 28 is configured to be rotatable with respect to the base 28a, and includes a clamping portion 28b that sandwiches the torch together with the base 28a, and a fixing portion 28c that fixes the clamping portion 28b to the base 28a. It is configured. Then, by attaching the base portion 28a to the connecting piece 27c of the torch holder 27, the torch can be detachably attached.

  For this reason, a hole 27d and a long hole 27e for fixing the base portion 28a are formed side by side on the connecting piece 27c, and bolts are inserted into the pair of holes 27d and the long hole 27e to fasten the base portion 28a. Thus, the attachment member 28 can be fixed. In particular, the group of the hole 27d and the long hole 27e is formed in two places on the upper and lower sides of the connecting piece 27c, respectively, and it is possible to fix the attachment member 28 by selecting an upper group or a lower group. Therefore, it is possible to attach the torch close to or away from the steel plate by selecting either the upper or lower pair and fixing the attachment member 28. Moreover, since one side is formed as the long hole 27e, it is possible to adjust the mounting posture when the mounting member 28 is fixed to the connecting piece 27c.

  One upright piece 27a constituting the torch holder 27 is formed at right angles to the connecting piece 27c, and is attached to a support arm 25b provided on the rotating member 25 via the upright piece 27a. The structure for attaching the upright piece 27a to the support arm 25b is not particularly limited, and can be attached to the support arm 25b using a bolt (not shown). Further, the support arm 25b can be formed in a half nut shape, and a shaft member can be provided on the standing piece 27a, and the shaft member can be fitted and attached to the half nut.

  The torch holder 27 is formed by sheet metal working, and one upright piece 27a is doubled in a state of being folded outward. For this reason, when the standing piece 27a is attached to the support arm 25b, the folded up standing piece 27a functions as a spring washer, and can be prevented from loosening.

  By attaching the torch holder 27 to the support arm 25b using a bolt, the attachment angle of the torch holder 27 with respect to the support arm 25b can be easily adjusted. That is, when the torch holder 27 is configured to be attached to the support arm 25b with a single bolt, the angle can be adjusted by loosening the bolt. Further, when the torch holder 27 is configured to be attached to the support arm 25b using a plurality of bolts, the hole 27f formed in the standing piece 27a is formed into an arc-shaped elongated hole, thereby supporting the torch holder 27. It is possible to adjust the mounting angle with respect to the arm 25b.

  In addition, a straight long hole is formed in the upright piece 25a, and the mounting position of the torch holder 27 with respect to the support arm 25b is configured by using a bolt inserted into the long hole and mounting the support arm 25b. Can be adjusted. In this case, it is possible to prevent interference with the steel plate at the lower end portion due to the rotation of the torch holder 27, which is preferable.

  The other upright piece 27b constituting the torch holder 27 is formed in a state inclined to the outside of a right angle with respect to the connecting piece 27c. For this reason, the torch holder 27 is not a groove type having a right-angled standing piece, but a more open groove type. Thus, it becomes possible to easily visually recognize the state of the torch during work by the upright pieces 27b being inclined outward.

  Although the height dimension of a pair of standing piece 27a, 27b which comprises the torch holder 7 is not specifically limited, When a torch is attached to the attachment member 28, it is preferable to form so that this torch may be wrapped. In addition, the length of the torch holder 27 is not particularly limited, but when the torch is set at a predetermined height and a predetermined angle with respect to the steel plate when performing a desired work, the lower end portion is the surface of the steel plate. It is preferable that the length be as close as possible. When the torch holder 27 has such a length, it is possible to prevent the heat generated when the welding to the steel plate is performed to the traveling carriage A.

  Next, the configuration of the magnet 8a will be described with reference to FIGS.

  The casing 1 constituting the traveling carriage A is closed at the bottom by a bottom plate 10 made of a non-magnetic material such as aluminum, copper or synthetic resin, thereby forming a storage space 9 for storing the magnet 8a therein. Yes. The shape and size of the storage space 9 are not limited, and are preferably set according to conditions such as the shape and size of the magnet 8a to be stored and the inclination angle with respect to the steel plate.

  The magnet 8a has an attracting surface (the lower surface of the magnet 8a in FIGS. 4 and 5) facing the bottom plate 10, and a bracket 8c is attached to one side surface of the magnet 8a. That is, the magnet 8a is held by the frame 8e, and one end of the bracket 8c is fixed to the frame 8e. The other end of the bracket 8c passes through a pair of elongated holes 1c (see FIG. 2B) formed in the casing 1 and protrudes from the right side surface of the casing 1 to the outside. A handle 8b is attached to the head.

  Nothing is connected to the magnet 8a other than the bracket 8c and the handle 8b attached via the bracket 8c, and the attracting surface is merely placed on the top of the bottom plate 10. Therefore, the position of the magnet 8a can be freely changed by the amount of play between the long hole 1c formed in the casing 1 and the bracket 8c (play in the length direction and play in the width direction of the long hole 1c). .

  A regulating member 11 is disposed inside the storage space 9 formed inside the casing 1 and on the other side surface 8f (hereinafter simply referred to as “side surface 8f”) of the magnet 8a. The restricting member 11 is a crossing portion of the upright contact portion 11a facing the side surface 8f of the magnet 8a, the upper surface contact portion 11b in contact with the upper surface 8h of the magnet 8a, and the upright contact portion 11a and the upper surface contact portion 11b. And a corner portion 11c with which a corner portion 8g of 8a contacts.

  The corner portion 11c of the regulating member 11 is in contact with the corner portion 8g of the magnet 8a and regulates the movement of the magnet 8a toward the side surface 8f. For this reason, the distance from the bottom plate 10 is set to be the same as or slightly higher than the thickness of the magnet 8a (the height of the corner 10 when the magnet 8a is placed on the bottom plate 10 in a horizontal state). ing.

  The upper surface contact portion 11b has an inclination that starts from the corner portion 11c and moves upward as the distance from the corner portion 11c increases. That is, the upper surface contact portion 11b is formed to be inclined upward from the corner portion 11c. The inclination angle of the upper surface contact portion 11b is not particularly limited, and may be an angle corresponding to the inclination angle allowed for the magnet 8a in the storage space 9.

  Further, the upper surface contact portion 11b does not necessarily need to contact the upper surface 8h of the magnet 8a when the magnet 8a is inclined. That is, when the magnet 8a is inclined, the corner 8g comes into contact with any part of the restricting member 11 and the bracket 8c comes into contact with the upper end of the elongated hole 1c formed in the casing 1, so that the magnet 8a Is restrained. At this time, the upper surface 8h of the magnet 8a does not necessarily contact the upper surface contact portion 11b.

  The upright contact portion 11a is formed with an inclination that starts from the corner portion 11c and is separated from the side surface 8f of the magnet 8a as it approaches the bottom plate 10. However, the present invention is not limited to this configuration, and it may be formed vertically from the corner portion 11c.

  With the magnet 8a and the restricting member 11 configured as described above, when the traveling carriage A is placed on the steel plate and freed without applying any force to the handle 8b, the magnet 8a is as shown in FIG. As shown in FIG. 4, the base plate 10 is placed in a free state. For this reason, the attracting surface of the magnet 8a comes into contact with the bottom plate 10 over substantially the entire surface, the air gap between the attracting surface and the steel plate is minimized, and a large attracting force acts. As a result, the traction force of the traveling carriage A is the largest.

  As shown in FIG. 5, when a force in the lifting direction is applied to the handle 8b, the magnet 8a is pulled upward in accordance with this force. At this time, the corner 8g of the magnet 8a comes into contact with the corner 11c of the restricting member 11, and the upward movement is restricted, so that the magnet 8a rises in the direction of arrow e on the side of the bracket 8c. 8a is inclined as shown in the figure.

  As the bracket 8c side of the magnet 8a rises in the direction of arrow e, the posture of the magnet 8a changes as if it rotates in the direction of arrow e as a whole. At this time, the posture of the corner portion 8h of the magnet 8a is changed so as to be lowered so as to approach the bottom plate 10 while keeping contact with the corner portion 11c without contacting the corner portion 11c.

  When the upper surface 8h of the magnet 8a contacts the upper surface contact portion 11b or when the bracket 8c contacts the upper end of the elongated hole 1c, the change in the posture of the magnet 8a is constrained, and the inclination of the magnet 8a is finished in this state. Will be. When the magnet 8a is tilted with respect to the bottom plate 10, the attracting surface of the magnet 8a is also tilted with respect to the bottom plate 10, the air gap between the attracting surface and the steel plate is maximized, and the attracting force is also minimized. Become. As a result, the traction force of the traveling carriage A is reduced.

  For this reason, the traveling carriage A can be easily peeled off from the steel sheet, and the worker can easily carry the traveling carriage A to the next work position.

  In the traveling carriage A according to the present embodiment, the magnet 8 a is arranged in a free state with respect to the storage space 9. That is, the magnet 8a is not supported by a member such as a shaft or a bearing, and only the regulating member 11 that contacts the magnet 8a is disposed. For this reason, it is possible to reduce the number of parts, which can contribute to cost reduction.

  Further, since the magnet 8a is not configured to be pivotably supported, maintenance work such as lubrication or replacement of the components constituting the rotating portion is unnecessary, and so-called maintenance-free operation can be realized. For this reason, it is possible to reduce the time required for maintenance work and contribute to the reduction of work costs.

  The traveling cart according to the present invention is not limited to welding, but is advantageously used for cutting.

A Traveling cart 1 Casing 1a Cover 1c Slot 2 Wheel 3 Socket 4 Pushbutton switch 5 Dial 6 LED
7a guide roller 7b arm 8a magnet 8b handle 8c bracket 8e frame 8f side surface 8g corner 8h upper surface 9 storage space 10 bottom plate 11 regulating member 11a vertical surface contact portion 11b upper surface contact portion 11c corner portion 20 mounting bracket 20a slot 21 screw 22 Screw shaft 22a Handle 23 Bracket 23a Horizontal piece 23b Drooping piece 23c Rotating shaft 24 Screw member 24a Handle 25 Rotating member 25a Long hole 25b Support arm 26 Nut member 27 Torch holder 27a, 27b Standing piece 27c Connecting piece 27d, 27f Hole 27e Elongated hole 28 Mounting member 28a Base part 28b Clamping part 28c Fixed part

Claims (3)

It is a traveling cart that increases the traction force by bringing the magnet arranged in the casing close to the steel plate and applying the attractive force, and reduces the traction force by separating the magnet from the steel plate and reducing the attractive force. ,
A casing provided with a bottom plate made of a non-magnetic material on the bottom surface and provided with a magnet storage space whose bottom is defined by the bottom plate;
A magnet placed on the bottom plate of the casing and stored in a storage space;
A handle having one end fixed to one side of the magnet and the other end extending outward from the side of the casing to reach the upper side of the casing;
A restricting member that is a storage space provided in the casing and is opposed to a corner portion of the other side surface and the upper surface of the magnet stored in the storage space, and restricts the posture of the magnet;
When a force in the lifting direction is applied to the handle, one side surface of the magnet is separated from the bottom plate and the corners of the other side surface and the upper surface are regulated by the regulating member, and the attracting surface is inclined with respect to the bottom plate,
The traveling carriage is configured such that when a force in the lifting direction is not applied to the handle, the attracting surface of the magnet can contact the entire surface of the bottom plate.   The traveling cart according to claim 1, wherein the magnet is stored in a freely movable position relative to a storage space provided in the casing.   The regulating member includes a corner where the corner of the other side surface and the upper surface of the magnet contacts, an upper surface contact portion where the upper surface of the magnet contacts when the magnet tilts, and the other side of the magnet when the magnet tilts. A corner contact portion between the side surface and the top surface, and the corner portion between the other side surface and the top surface of the magnet is in contact with the corner portion or the elevation surface contact portion of the regulating member. 4. The structure according to claim 2, wherein the movement of the magnet in the side surface direction is restricted, and the inclination of the magnet can be restricted by contacting the upper surface of the magnet with the upper surface contact portion of the restriction member. The traveling cart described in 2.

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