JP6743721B2 - Surface frame bogie frame shift prevention mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enclosure frame shift prevention mechanism for a surface plate truck.

The following Patent Document 1 discloses a platen cart for transporting a green sand mold with a frame. In this surface plate cart, positioning pins are provided on the upper surface, and the positioning frame is positioned on the surface of the surface table truck by inserting the positioning pins into a positioning bush provided in the frame.

JP, 2013-158788, A

However, according to the configuration disclosed in Patent Document 1, when the enclosure frame mounted on the surface plate carriage is replaced with another surface plate carriage, the positioning pin may hinder the replacement of the enclosure frame. is there.

On the other hand, in order to facilitate replacement of the surrounding frame, it may be possible to provide a trolley table with a positioning guide for restricting only one horizontal movement of the surrounding frame. However, in the case of this configuration, when the platen truck is set in such a manner that the casting line is moved in two directions substantially orthogonal to each other in the horizontal direction and is not regulated by the positioning guide, the enclosure frame causes the platen truck to move. May move unintentionally. Therefore, the above-mentioned prior art has room for improvement in this respect.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an enclosure frame shift prevention mechanism for a surface plate truck that can restrict unintended movement of the enclosure frame with respect to the surface table truck and can easily replace the enclosure frame. To do.

An enclosure frame shift preventing mechanism for a surface plate carriage according to the invention of claim 1 is a surface plate carrier for moving a casting line set in two directions in which movement directions are substantially orthogonal to each other in a horizontal direction, and an upper surface of the surface plate carrier. And a pair of first movement restricting means extending along one side in the moving direction and protruding toward the upper side of the device, and on the upper surface of the surface plate carriage and inside the first movement restricting means. A surrounding frame that is arranged and is movable on the upper surface of the surface plate carriage along the first movement restricting means, and is provided in the surface plate carriage and is fitted to a part of the surrounding frame to form the surrounding wall. A second movement limiting means for selectively setting a fitted state in which the movement of the frame is restricted and a non-fitted state in which the frame is separated from a part of the surrounding frame and the movement of the surrounding frame is not restricted. ..

According to the present invention as set forth in claim 1, a pair of first movement limiting means is provided on the platen truck that moves on the casting line whose movement directions are set in two directions substantially orthogonal to each other in the horizontal direction. .. The first movement restricting means is provided on the upper surface of the surface plate truck, extends along one side in the moving direction, and projects toward the upper side of the apparatus. Therefore, the enclosure frame arranged inside the first movement restricting means is restricted from moving to one side in the movement direction by the first movement restricting means, and the direction along the first movement restricting means, that is, the moving direction. It is possible to move to the other side (a direction orthogonal to the one side in the moving direction) of the.

Here, in the present invention, the second movement limiting means is provided. The second movement restricting means is provided on the surface plate truck and selectively takes a fitted state in which a part of the surrounding frame is fitted and a non-fitting state in which the part is separated from the surrounding frame. Therefore, by setting the second movement limiting means in the non-fitting state, the enclosure frame can be moved to the other side in the movement direction. That is, it is easy to replace the enclosure.

On the other hand, by bringing the second movement limiting means into the fitted state, the second movement limiting means is fitted in a part of the surrounding frame, so that the movement of the surrounding frame to the other side in the moving direction is limited. In other words, the enclosure frame can be held by the surface plate carriage so as not to move in any direction in the horizontal direction by the second movement limiting means and the first movement limiting means.

According to a second aspect of the present invention, there is provided an enclosure frame shift preventing mechanism for a surface plate truck according to the first aspect of the invention, wherein the casting line has a second movement that sets the second movement limiting means to the non-fitting state. A restriction release mechanism is provided.

According to the second aspect of the present invention, the second movement limiting means releasing mechanism provided in the casting line brings the second movement limiting means into a non-fitting state. Therefore, by providing the second movement restricting means releasing mechanism at the position where the surrounding frame is replaced in advance, it is possible to reliably replace the surrounding frame at that position.

According to a third aspect of the present invention, there is provided an enclosure frame shift preventing mechanism for a surface plate truck according to the first or second aspect of the present invention, wherein the second movement limiting means has a substantially central portion in a longitudinal direction rotated by a rotating shaft. It has a stopper body that is movably supported and has one end in the longitudinal direction arranged at a position corresponding to a part of the surrounding frame, and one end of the stopper body moves to the lower side of the device. Then, the fitting state is established, and the one end portion of the stopper main body portion is moved to the upper side of the apparatus to be in the non-fitting state.

According to the present invention as set forth in claim 3, the second movement limiting means is rotatably supported by the rotation shaft, and one end portion in the longitudinal direction is arranged at a position corresponding to a part of the surrounding frame. It has a main body. When one end of the stopper body moves to the lower side of the device, it is brought into the fitted state, and when the one end moves to the upper side of the device, it goes into the non-fitted state. Therefore, it is possible to limit the movement of the enclosure and release the limitation with a simple configuration.

INDUSTRIAL APPLICABILITY The enclosure frame shift preventing mechanism of the surface plate carriage according to the present invention has an excellent effect that the enclosure frame is prevented from unintentionally moving with respect to the surface plate carriage and the enclosure frame can be easily replaced.

It is the schematic which shows the state which looked at the casting line which the surface plate truck which has the enclosure frame shift prevention mechanism of the surface plate truck which concerns on one Embodiment moves from the apparatus upper side. It is sectional drawing which shows the state cut|disconnected along the AA line in FIG. It is sectional drawing which shows the state cut|disconnected along the BB line in FIG. (A) is a plan view showing a state of the surface plate truck in one embodiment as seen from the upper side of the apparatus, (B) is a side view showing a state as seen from the side of the apparatus with respect to (A), (C) is a front view showing a state as viewed from the front side of the apparatus with respect to (A). FIG. 3A is a plan view showing a state of a surface plate truck having an enclosure frame shift preventing mechanism for the surface plate truck according to one embodiment, viewed from the upper side of the apparatus, and FIG. It is a side view which shows the state seen from the side, and (C) is a front view which shows the state seen from the apparatus front side with respect to (A). (A) is a plan view showing a state where the enclosure frame in one embodiment is seen from the upper side of the device, (B) is a side view showing a state seen from the side of the device with respect to (A), FIG. 7C is a front view showing a state viewed from the front side of the apparatus with respect to FIG. (A) is a side view showing a state before the stopper lock device in one embodiment is actuated, and (B) is a side view showing a state after the actuation with respect to (A). (A) is a side view showing a state before the operation of the stopper unlocking device in one embodiment, and (B) is a side view showing a state after the operation with respect to (A).

An embodiment of an enclosure frame shift preventing mechanism for a surface plate truck according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the casting line 10 includes a molding line 12, a primary cooling line 14, a secondary cooling line 16, and a transfer line 18. In each line, the surface plate trucks 20 and 22 are continuously arranged along the moving direction in each line.

As shown in FIG. 4, the platen truck 20 has a rectangular plate shape in a plan view, and a liner 30 as a first movement limiting means is attached to each of a pair of opposing end portions 24 and 26. There is. The liner 30 is extended along the end portions 24 and 26, and is projected from the upper surface 32 of the surface plate truck 20 to the upper side of the apparatus (see FIGS. 4A, 4B, and 4C). ). In addition, the surface plate truck 20 is movable in a direction along the ends 24 and 26 by wheels 34 described later. That is, since the surface plate truck 20 is moved in the direction along the end portions 24 and 26, the liner 30 is extended in other words along the moving direction.

A liner 44 is attached to each of the other end portions 36 and 38 of the surface plate trucks 20 substantially at the center in the longitudinal direction of the side surfaces 40 and 42, and the liner 44 of the other surface plate trucks 20 adjacent to each other on the line. Have been in contact with.

Wheels 34 for running and a rail scraper 46 are provided on the lower surface of the surface plate truck 20. The wheel 34 has a built-in bearing (not shown), is attached to an axle 48 fixed to the surface plate truck 20, and rotates around the axle 48.

The rail scraper 46 is composed of a rubber plate or the like attached in a direction substantially orthogonal to the traveling direction of the wheels 34, and removes foreign matter from the traveling surface of the wheels 34 (the upper surface of the rail (not shown)).

As shown in FIG. 5, the surface plate carriage 22 has a basic structure similar to that of the surface plate carriage 20, and is characterized in that a stopper 50 as a second movement limiting means is provided. is there. That is, the stopper 50 is provided at the approximate center in the longitudinal direction of the liner 30 provided at the end portion 26. The stopper 50 is adjacent to the stopper body 54, which extends in a direction orthogonal to the longitudinal direction of the liner 30 and is rotatably supported by a rotating shaft 51 at a substantially central portion in the longitudinal direction. In addition, it is configured to include a pair of holding members 56 that hold the rotating shaft 51. One end portion 58 of the stopper body portion 54 on the inner side of the platen carriage is arranged in a fitted portion 62 of an enclosure frame 60, which will be described later, when the stopper body portion 54 moves to the lower side of the device about the rotating shaft 51. Further, the one end portion 58 is provided with a side wall 64 extending along the vertical direction of the device. Therefore, since the one end portion 58 side is heavier than the other end portion 66 on the opposite side of the one end portion 58 where the side wall 64 is not provided, the one end portion 58 is moved to the device lower side by its own weight.

As shown in FIG. 1, in the molding line 12, a molding machine is used to form a mold made of molding sand in a molding frame 68 (see FIG. 2) (all are not shown). The casting flask 68 is placed on a surface plate carriage 21 having substantially the same structure as the surface plate carriage 20. The surface plate truck 21 is pushed by the cylinder 70 provided on the starting end side of the molding line 12 to move while pressing the adjacent surface plate truck 21. The casting frame 68 and the surface plate carriage 21 placed on the empty surface plate carriage 21 are both moved along the molding line 12. A cushion cylinder 71 is provided on the end side of the molding line 12 to receive the surface plate carriage 21 that is pushed and moved by the cylinder 70.

The mold and the platen truck 20 in the casting frame 68, in which the material such as cast iron melted in the mold is poured, are conveyed to the primary cooling line 14. In the primary cooling line 14, a plurality of cooling lines 72 are provided in parallel, and each cooling line 72 is provided with a cylinder 74 at the start side and a cushion cylinder 76 at the end side, and the cylinder 74 is fixed. By pushing the platen truck 21, the surface platen truck 21 is moved to the end side. The surface plate truck 21 moved to the terminal end side is received by the cushion cylinder 76.

Traversers 78 are arranged at both longitudinal ends of each cooling line 72. The traverser 78 conveys the surface plate truck 21 in a direction orthogonal to the movement direction of the cooling line 72. Therefore, the platen truck 21 moved along a certain cooling line 72 to the end of the cooling line 72 is conveyed by the traverser 78 to another adjacent cooling line 72 and moved on the other cooling line 72. That is, in the primary cooling line 14, the platen truck 21 moves in a meandering manner to cool the cast iron and the like in the mold.

The surface plate truck 21 that has been moved along the primary cooling line 14 moves to section A in the transfer line 18. When the platen truck 21 is moved to the portion A of the transfer line 80, the platen truck 21 is moved to the lower side of the drawing by the mold conveying means, and the first transfer unit 82 shown in FIG. It is located in the middle part B). The upper portion of the flask 68 is pressed by the holding cylinder 84. An extruding cylinder 83 provided on the lower side (lower side of the B section) of the first transfer machine 82 holds the mold and the cast iron in the casting frame 68 through the inside of the holding cylinder 84 to the second floor portion (C in the figure). Part). At this time, the surrounding frame 60 is set in the C portion in advance, and the mold is stored in the surrounding frame 60.

As shown in FIG. 6(A), the enclosure frame 60 is formed in a rectangular rectangular tube shape in a plan view, and flanges 86 extending outward are provided at both ends in the vertical direction of the device. Each is provided. A fitting portion 62 is provided on each flange 86, and the fitting portion 62 is located at a position corresponding to approximately the center in the longitudinal direction of one side wall of the enclosure frame 60 and in the enclosure vertical direction of the enclosure frame 60. It is arranged on the wall surface 88 facing inward, and includes a base 90 and a protrusion 92. The base 90 is formed in a rectangular plate shape whose plate thickness direction is the device vertical direction, and is attached along the wall surface 88. The protrusions 92 are formed in a rectangular plate shape whose plate thickness direction is the device vertical direction, and are attached to both ends of the base 90 in the longitudinal direction so as to be separated from each other. The space between the one protruding portion 92 and the other protruding portion 92 is set to have a dimension equal to or larger than the width of the stopper body 54.

As shown in FIG. 2, when the mold is set in the surrounding frame 60, the mold together with the surrounding frame 60 is moved to the section D by the transfer device 94. At this time, the enclosure frame 60 is moved along the carrier 96 that is set up in the vicinity of the surface plate carriage 20 that is set in advance in the D section, so that the mold inside the enclosure frame 60 including the mold D It is placed on the surface plate truck 20 of the section. The surface plate cart 20 on which the enclosure frame 60 is placed is moved to the section E in FIG. 1 and then conveyed to the section F by the traverser 98 and moved to the section G by the cylinder 100. .. The surface plate carriage 20, the enclosure 60 and the mold moved to the G section are conveyed to the H section by the traverser 102, and then moved to the J section by the cylinder 104.

As shown in FIG. 3, the platen carriage 20, the enclosure 60 and the mold moved to the J section are lifted to the K section by the lifter 106. The K section is provided with a carrier 108 that is laid across substantially the same plane as the upper surface of the surface plate trucks 22 arranged in the L section and the M section adjacent to each other on both sides. The enclosure 60 and the mold are lifted by the lifter 106 to a position where the upper surface of the surface plate carriage 20 is substantially the same as the upper surface of the carrier 108. Thereafter, the enclosure frame 60 and the mold placed on the surface plate carriage 20 are slid on the surface of the surface plate carriage 20 from the surface plate carriage 20 by the carrier device 110, and the upper surface of the surface plate carrier 22 which is already waiting at the M portion. Placed on. At this time, before the enclosure frame 60 and the mold are moved to the M portion, the stopper lock releasing device 136 shown in FIG. 8A is provided at a position near the M portion and at a position corresponding to the stopper 50 of the surface plate carriage 22. While being provided, the stopper lock releasing device 136 operates to bring the stopper 50 of the platen truck 22 into the fitted state. As a result, the surface plate truck 22 can mount the new enclosure 60 and the mold, which are transported from the K section at the M section. Specifically, as shown in FIG. 8A, the stopper lock releasing device 136 includes, for example, a cylinder 140 fixed to a wall portion (not shown) of the transfer line 18, and a longitudinal direction at a tip portion of the cylinder 140. One end portion 144 of the above is configured to include an arm 142 rotatably fastened. The arm 142 is rotatably supported by a bearing 146 fixed to a wall portion (not shown) of the transfer line 18 at a substantially central portion in the longitudinal direction via a rotary shaft 150. Further, the other end portion 152 of the arm 142 is arranged at a position corresponding to the other end portion 66 of the stopper body 54. In the state before the stopper 50 is separated from the fitted portion 62 of the surrounding frame 60, the stopper unlocking device 136 extends the cylinder 140 so that the other end portion 152 of the arm 116 becomes the stopper main body portion 54 of the stopper 50. Although separated, when the stopper 50 is separated from the fitted portion 62, the other end portion 152 of the arm 116 is moved to the stopper main body portion by contracting the cylinder 140, as shown in FIG. 8B. The other end 66 of 54 is brought into contact with and the other end 66 is displaced toward the lower side of the apparatus. As a result, the stopper 50 is separated from the fitted portion 62, so that the restriction on the relative movement of the surrounding frame 60 with respect to the surface plate carriage 22 is released.

When the enclosure frame 60 and the mold are placed on the surface plate truck 22, the stopper lock device 112 shown in FIG. 7 provided at a position near the M portion and corresponding to the stopper 50 of the surface plate truck 22 operates. The stopper 50 of the surface plate truck 22 is brought into a fitted state. Specifically, as shown in FIG. 7A, the stopper lock device 112 includes, for example, a cylinder 114 fixed to a wall portion (not shown) of the transfer line 18, and a longitudinal direction at a tip portion of the cylinder 114. One end portion 118 is configured to include an arm 116 that is rotatably fastened. The arm 116 is rotatably supported by a bearing 120 fixed to a wall portion (not shown) of the transfer line 18 at a substantially central portion in the longitudinal direction via a rotary shaft 121. Further, the other end 119 of the arm 116 is arranged at a position corresponding to the one end 58 of the stopper body 54. In a state before the stopper 50 is fitted to the fitted portion 62 of the surrounding frame 60, the stopper lock device 112 extends the cylinder 114 so that the other end 119 of the arm 116 becomes the stopper main body 54 of the stopper 50. Although they are separated from each other, when the stopper 50 is fitted to the fitted portion 62, the other end 119 of the arm 116 is moved to the stopper body by contracting the cylinder 114 as shown in FIG. 7B. The one end portion 58 of the portion 54 is brought into contact with the one end portion 58 and the one end portion 58 is displaced toward the lower side of the apparatus. As a result, the stopper 50 fits into the fitted portion 62, and the relative movement of the surrounding frame 60 with respect to the surface plate truck 22 is restricted.

After the stopper 50 is fitted to the fitted portion 62, the surface plate truck 22, the surrounding frame 60, and the mold are moved to the N portion of the secondary cooling line 16 by the traverser 122 as shown in FIG. It Then, when it is moved to the P section while being pushed by the adjacent surface plate truck 22 by the cylinder 124, it is moved to the Q section by the traverser 126 and moved to the R section by the cylinder 128. Then, it is moved to the S section by the traverser 130, and is moved to the T section by the cylinder 124. That is, the surface plate truck 22 on which the enclosure 60 and the mold are placed is moved along the secondary cooling line 16 set in two directions that are substantially orthogonal to each other in the horizontal direction. This moving process promotes cooling of the cast iron in the mold within the enclosure 60.

The platen truck 22, the enclosure 60 and the mold moved to the T section are moved to the L section by the traverser 134. As the second movement restricting means releasing mechanism shown in FIG. 8 which is provided in the vicinity of the L portion and at a position corresponding to the stopper 50 of the surface plate truck 22 after the surface table truck 22, the surrounding frame 60 and the mold arrive at the L section. The stopper lock releasing device 136 is operated to bring the stopper 50 of the platen truck 22 into the fitted state.

After that, as shown in FIG. 3, the surrounding frame 60 and the mold placed on the surface plate truck 22 moved to the L section are moved to the K section by the transfer device 110. At this time, the enclosure frame 60 and the mold are placed on the upper surface of the surface table carriage 20 already waiting at the K portion by the lifter 106 while sliding on the carrier table 108 from the surface table carriage 22. When the lifter 106 operates toward the lower side of the apparatus, the surface plate carriage 20 on which the enclosure frame 60 and the mold are placed is moved to the J section, and the cylinder 104 shown in FIG. 1 moves to the V section. Be moved. The platen cart 22 left in the L section, on which nothing is placed, is returned to the T section by the traverser 134, moved to the N section by the cylinder 124, and moved to the M section by the traverser 122. To be done. At this time, a stopper lock releasing device 136 shown in FIG. 8A is provided near the M portion and at a position corresponding to the stopper 50 of the surface plate truck 22, and the stopper lock releasing device 136 operates. Then, the stopper 50 of the surface plate truck 22 is brought into a fitted state. As a result, the surface plate truck 22 can mount the new enclosure 60 and the mold, which are transported from the K section at the M section.

When the surface plate truck 20, the surrounding frame 60 and the mold are moved to the V portion, the surrounding frame 60 is held by a holding device (not shown). On the other hand, the surface plate truck 20 is moved to the lower side of the transport line from the F section to the G section by a traverser (not shown). As a result, the lower part of the surrounding frame 60 is opened, so that the mold falls from the surrounding frame 60 onto the vibration conveyor 156 shown in FIG. Since the mold is disintegrated into a substantially sand shape by the vibration conveyer 156, the product made of cast iron inside the mold can be taken out and conveyed to a product take-out portion (not shown). After that, the surface plate truck 20 is moved from the lower side of the transport line from the F section to the G section to the V section by a traverser (not shown). As a result, the enclosure frame 60 is placed on the surface plate truck 20 again. Then, after the surface plate carriage 20 and the enclosure frame 60 are moved from the V section to the D section, the enclosure frame 60 is moved to the C section by the transfer device 94, and a new mold conveyed from the B section is inside. It waits in the C section to pay in. When a new mold is stored in the enclosure 60, the mold and the product are separated at the V section through the same steps as described above.

Next, the operation and effect of this embodiment will be described.

In the present embodiment, as shown in FIG. 4, a pair of liners 30 is provided on the platen truck 20 moving on the casting line 10 whose movement directions are set in two directions substantially orthogonal to each other in the horizontal direction shown in FIG. Is provided. The liner 30 is provided on the upper surface of the surface plate truck 20, extends along one side in the moving direction, and projects toward the upper side of the apparatus. Therefore, the surrounding frame 60 arranged inside the liner 30 is restricted from being moved to one side in the moving direction by the liner 30, and is also in the direction along the liner 30, that is, the other side in the moving direction (one in the moving direction). It is possible to move in the direction orthogonal to the side).

Here, in the surface plate truck 22 of the present invention, the stopper 50 is provided. The stopper 50 is provided on the liner 30 of the surface plate truck 22 and is in a fitted state in which it fits into the fitted portion 62 of the enclosure 60 and in a non-fitted state in which it is separated from the fitted portion 62 of the enclosure 60. And are taken selectively. Therefore, by setting the stopper 50 in the non-fitting state, the surrounding frame 60 and the mold can be moved to the other side in the moving direction. That is, it is easy to replace the enclosure 60 and the mold.

On the other hand, by setting the stopper 50 in the fitted state, the stopper 50 and the fitted portion 62 of the surrounding frame 60 are fitted to each other, and the movement of the surrounding frame 60 to the other side in the moving direction is restricted. In other words, the stopper 50 and the liner 30 can hold the surrounding frame 60 and the mold on the platen truck 22 so as not to move in any horizontal direction. As a result, unintended movement of the enclosure 60 and the mold with respect to the surface plate truck 22 can be restricted.

Further, the stopper 50 is brought into a non-fitting state by the stopper lock releasing device 136 provided in the casting line 10. Therefore, by providing the stopper lock releasing device 136 at a position where the surrounding frame 60 is replaced, it is possible to reliably replace the surrounding frame 60 and the mold at that position.

Further, the stopper 50 is rotatably supported by the rotation shaft and has a stopper main body portion 54 whose one end in the longitudinal direction is arranged at a position corresponding to a part of the surrounding frame 60. When one end of the stopper body 54 moves to the lower side of the device, it is brought into the fitted state, and when the one end moves to the upper side of the device, it goes into the non-fitted state. Therefore, the movement of the enclosure 60 can be restricted and the restriction can be released with a simple configuration.

In the present embodiment, the stopper lock device 112 operates to fit the stopper 50 of the surface plate truck 22 to the fitted portion 62 of the surrounding frame 60, but the invention is not limited to this. The device 112 may not be provided, and the one end portion 58 of the stopper main body portion 54 may be fitted to the fitted portion 62 by its own weight.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the gist of the present invention. Of course.

10 Casting line 22 Platen cart 30 Liner (first movement limiting means)
32 upper surface 50 stopper (second movement limiting means)
51 Rotating Shaft 54 Stopper Main Body 58 One End 60 Enclosing Frame 62 Fitted Part (Part of Enclosing Frame)
136 Stopper lock release device (second movement limiting means release mechanism)

Claims (3)

A platen truck that moves on a casting line set in two directions in which the moving direction is substantially orthogonal to the horizontal direction;
A pair of first movement restricting means provided on the upper surface of the platen truck, extending along one side in the moving direction, and protruding toward the upper side of the device;
An enclosure frame that is arranged on the upper surface of the surface plate carriage and inside the first movement restriction means, and is movable along the first movement restriction means on the upper surface of the surface plate carriage,
The fitting state is provided on the trolley and is fitted to a part of the enclosure frame to limit the movement of the enclosure frame, and is separated from a part of the enclosure frame to not limit the movement of the enclosure frame. Second movement limiting means for selectively taking the non-fitted state,
A mechanism for preventing displacement of the enclosure frame of the surface plate truck. The casting line is provided with a second movement limiting means releasing mechanism that brings the second movement limiting means into the non-fitting state.
An enclosure frame shift preventing mechanism for a surface plate truck according to claim 1. The second movement limiting means has a stopper main body portion in which a substantially central portion in the longitudinal direction is rotatably supported by a pivot shaft and one longitudinal end portion is arranged at a position corresponding to a part of the surrounding frame. Has
When one end of the stopper body moves to the lower side of the device, the fitting state is set, and when one end of the stopper body moves to the upper side of the device, the non-fitting state is set.
An enclosure frame shift preventing mechanism for a surface plate truck according to claim 1 or 2.