JP7020319B2 - Transport trolley - Google Patents

Description

The present invention relates to a transport trolley.

Conventionally, for example, a transport device for transporting a bumper of a vehicle is known (see, for example, Patent Document 1). The transport device described in Document 1 has a dolly, two support members erected on the dolly, and two legs supported by each support member, and a receiver on which a bumper is placed. It is equipped with. The support members are provided at intervals in the front-rear direction of the carriage.

The receiver has a pair of horizontal arms extending both anteriorly and posteriorly from the upper end of each leg. Pads made of urethane foam are provided at both ends of each horizontal arm. The bumper is placed on the pad with its longitudinal direction along the front-rear direction of the bogie.

One of the two legs is made of a pipe material and is fitted tightly to the support member. The other leg is formed by bending one elongated metal plate material at the center in the longitudinal direction, and sandwiches the support member from the width direction orthogonal to both the front-rear direction and the vertical direction of the vehicle. As a result, the other leg is allowed to move only in the front-rear direction of the vehicle.

According to such a transport device, even if there is a manufacturing variation in the distance between the support members on the trolley side and the distance between the legs on the receiver side, the support member and the leg member can be used regardless of the variation. Is fitted. As a result, the rattling of the legs with respect to each support member is regulated, and the posture of the bumper is always maintained.

Jitsukaihei 3-19788 Gazette

By the way, in the conventional transport trolley including the transport device described in Patent Document 1, a dedicated receiver having a shape corresponding to the shape of the bumper to be transported is required. Therefore, especially in factories that produce small quantities of other varieties, it is necessary to prepare multiple types of trolleys equipped with special receivers for each type of bumper.

It should be noted that these problems are not limited to the bogies that carry the bumpers of vehicles, but generally occur in the bogies that carry other objects.
An object of the present invention is to provide a transport trolley capable of transporting objects having different shapes.

The transport trolley for achieving the above object is a transport trolley provided with a plurality of support portions for supporting a plurality of points of an object, respectively, and the first support column and the first support column along the length direction of the first support column. An operating member slidably supported by one column, a pair of second columns connected to the first column and arranged in parallel at intervals from each other, and along the length direction of the second column. A movable column slidably supported by the pair of second columns, a link mechanism for connecting the operating member and the movable column, and changing the distance between the first column and the movable column. A positioning mechanism capable of positioning the movable column in the length direction of the second column is provided, and the plurality of support portions are provided at intervals in the length direction of the second column. At least one of the plurality of supports is provided on the movable column.

According to the same configuration, when the operating member is slid along the length direction of the first strut, the movable strut slides with respect to the length direction of the second strut via the link mechanism. .. As a result, the distance between the operating member and the movable column is changed. Further, a plurality of support portions are provided at intervals in the length direction of the second support column, and at least one of them is provided on the movable support column. From these things, by changing the distance between the first strut and the movable strut, the distance between the support portion provided on the movable strut and the other support portion can be changed.

Further, since the positioning mechanism capable of positioning the movable column in the length direction of the second column is provided, the position of the support portion provided on the movable column can be fixed at a predetermined position. As a result, the distance between the support portions can be fixed at a predetermined distance. Therefore, by changing the distance between the support portions according to the shape of the object, it is possible to transport the object having a different shape.

According to the present invention, objects having different shapes can be transported.

A front view of the transport trolley in a state where the operation unit is in the first position for one embodiment of the transport trolley. A side view of the transport trolley of the same embodiment. FIG. 2 is a cross-sectional view taken along the line 3-3 of FIG. An enlarged front view showing an enlarged view centering on the operation unit of FIG. FIG. 4 is an enlarged front view showing a state in which the operation unit is located between the first position and the second position. FIG. 4 is an enlarged front view showing a state when the operation unit is in the second position. FIG. 4 is an enlarged front view showing a state in which the operation unit is located between the second position and the third position. FIG. 4 is an enlarged front view showing a state in which the operation unit is in the third position. It is a figure corresponding to FIG. 1, and is the front view which shows the state which the operation part is in a 2nd position. It is a figure corresponding to FIG. 1, and is the front view which shows the state which the operation part is in a third position. The front view which shows the transport trolley of the modification example.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 10.
As shown in FIG. 1, the transport trolley 10 transports an object 1 such as a bumper of a vehicle.

As shown in FIGS. 1 to 3, the transport trolley 10 includes a bottom frame 20. The bottom frame 20 includes a pair of columnar bottom columns 21 extending in parallel with each other and a columnar connecting member 22 for connecting the central portions of the bottom columns 21 to each other, and has an H-shape in a plan view. ing.

Hereinafter, the extending direction of the bottom support column 21 will be described as the longitudinal direction X, the vertical direction in FIG. 1 will be described as the vertical direction Y, and the direction orthogonal to both the longitudinal direction X and the vertical direction Y will be described as the width direction Z.
As shown in FIGS. 1 and 3, a pair of side frames 30 are connected to both ends of the bottom frame 20 in the longitudinal direction X.

As shown in FIG. 2, each side frame 30 extends along the width direction Z and is provided with a pair of columnar first support portions 32 at intervals in the vertical direction Y, and the vertical direction. It has a pair of columnar second support portions 33 that extend along Y and connect the ends of each first support portion 32 to each other, and is provided with a frame 31 having a substantially rectangular side view. There is. The central portions of the sides of the frame 31 facing each other are connected to each other by a connecting body 34 forming a cross-shaped side view.

As shown in FIGS. 2 and 3, four casters 40 are attached to both ends of each first support portion 32.
As shown in FIGS. 1 to 3, a columnar first support column 50 extending upward is connected to the central portion of the connecting member 22 of the bottom frame 20. Further, a caster 40 is attached to the central portion of the connecting member 22.

As shown in FIGS. 1 to 3, a pair of columnar second columns 60 extending along the longitudinal direction X are connected to the first column 50 at intervals in the vertical direction Y. ..
The upper second support column 60 extends from the upper end portion of the first support column 50 toward both sides in the longitudinal direction X. Both ends of the upper second support column 60 are connected to the central portion of the upper first support portion 32 of each side frame 30.

On the other hand, the lower second support column 60 extends from the portion of the first support column 50 above the connecting portion between the first support column 50 and the connecting member 22 toward both sides in the longitudinal direction X. Both ends of the lower second support column 60 are connected to the lower part of the connecting body 34 of each side frame 30 (see FIG. 2).

As shown in FIG. 1, a pair of columnar movable columns 70 extending along the vertical direction Y are provided between the second columns 60. Each movable strut 70 is provided with the first strut 50 interposed therebetween in the longitudinal direction X. Each movable strut 70 has a strut body 70a extending along the vertical direction Y, and a pair of upper and lower T-shaped cylindrical sliding members 71 attached to the upper end and the lower end of the strut body 70a, respectively. ing. Each sliding member 71 is slidably inserted into each second support column 60. Each movable column 70 is slidably supported with respect to each of the upper and lower second columns 60.

As shown in FIGS. 1 and 2, each movable strut 70 is provided with a plurality of pairs of columnar support portions (3 pairs in the present embodiment) 80 at intervals in the vertical direction Y. The two paired support portions 80 are projected from the movable column 70 toward both sides in the width direction Z, respectively. As shown in FIG. 2, each support portion 80 is inclined and extends so as to be located upward toward the tip end side. For example, a rubber protective material 81 having a bottomed cylindrical shape is externally fitted to the tip of each support portion 80.

As shown in FIGS. 1 and 4, an operating member 90 having a frame portion 91 having a substantially rectangular shape in front view is slidably supported on the first support column 50 along the vertical direction Y. The frame portion 91 extends from a pair of upper and lower columnar horizontal frame portions 91a and 91b extending along the longitudinal direction X, and extends along the vertical direction Y and ends of each of the horizontal frame portions 91a and 91b. It has vertical frame portions 91c and 91d to be connected. At the central portion of each of the horizontal frame portions 91a and 91b of the frame portion 91 in the longitudinal direction X, a sliding member 92 having a cylindrical shape, externally attached to the first support column 50, and slidable with respect to the first support column is provided. Each is provided.

The vertical frame portions 91c and 91d of the frame portion 91 are provided with handles 93c and 93d that protrude outward in the longitudinal direction X, respectively.
A rectangular plate 94 extending along the vertical direction Y and projecting inward in the longitudinal direction X of the frame portion 91 is fixed to one of the vertical frame portions 91c. The plate 94 is located below one of the handles 93c.

As shown in an enlarged manner in FIG. 4, a shaft portion 103 extending along the width direction Z is provided at the lower portion of the plate 94. An operation lever 100 having a substantially L-shape in front view is rotatably supported on the shaft portion 103 around the shaft portion 103. The operating lever 100 has a grip portion 101 extending in the longitudinal direction X in the state shown in the figure, one end portion of the grip portion 101 (the left end portion in the figure), and more specifically, the longitudinal direction of the frame portion 91 rather than the plate 94. It has an extending portion 102 that bends from one end located inside X and extends downward. A portion of the grip portion 101 in the extending direction is rotatably supported by the shaft portion 103. The lower end of the tension coil spring 104 is fixed to the bent portion 100a of the operating lever 100. The upper end of the tension coil spring 104 is fixed to the upper part of the plate 94. The axis of the tension coil spring 104 is inclined so as to be located outside the longitudinal direction X of the frame portion 91 toward the upper end side of the tension coil spring 104.

At the lower end of the extending portion 102 of the operating lever 100, a columnar engaging convex portion 105 extending along the width direction Z is provided. At the lower end of the extending portion 102, a rotation restricting portion 106 is provided so as to project toward the outside of the frame portion 91 in the longitudinal direction X (right side of FIGS. 1 and 4). When the operating lever 100 is rotated around the shaft portion 103, the rotation restricting portion 106 comes into contact with the frame portion 91 (91c), so that further rotation of the operating lever 100 is restricted.

A long plate-shaped engaging member 110 extending along the vertical direction Y is projected from the first support column 50 toward the operation lever 100. A plurality of (three in this embodiment) engaging recesses 111, 112, 113 to which the engaging convex portion 105 of the operating lever 100 can be engaged are provided on the engaging member 110 in the vertical direction Y, that is, the first support column 50. It is provided so as to be spaced apart from each other in the length direction of. The depth (length in the longitudinal direction X in FIG. 4) of the first engaging recess 111 located on the upper side is the same throughout the vertical direction Y. The second engaging recess 112 located in the middle and the third engaging recess 113 on the lower side have inclined portions 112a and 113a whose depth is shallower toward the upper side, respectively.

A mechanical stopper 114 is provided so as to project from the portion of the engaging member 110 below the third engaging recess 113 toward the side opposite to the first support column 50.
The positioning mechanism 120 is composed of the operating lever 100 and the engaging member 110.

A protrusion 131 is projected from the first support column 50 toward the side opposite to the engaging member 110. A pinion gear 132 is rotatably provided at the tip of the protrusion 131 about an axis extending in the width direction Z. Further, a mounting plate 133 extending in the vertical direction is projected from the frame portion 91 toward the first support column 50. The mounting plate 133 is provided below the handle 93d. A rack gear 134 that meshes with the pinion gear 132 is attached to the mounting plate 133 along the vertical direction Y. The rack gear 134 is provided from above the upper end in the range where the operating member 90 meshes with the pinion gear 132 as it slides with respect to the first support column 50, and below the lower end in the same range. The speed suppression mechanism 140 is configured by the pinion gear 132 and the rack gear 134.

As shown in FIG. 1, the vertical frame portions 91c and 91d of the operating member 90 and each movable strut 70 are connected by a pair of upper and lower link mechanisms 150 that change the distance between the first strut 50 and each movable strut 70, respectively. ing. The link mechanism 150 includes an upper support portion 151 fixed to the vertical frame portion 91c (91d), a lower support portion 152 fixed to the movable column 70 below the upper support portion 151, and each support portion 151, 152. The support shafts 151a and 152a extending along the width direction Z are provided with a columnar link column 153 having both ends supported so as to be tiltable.

In such a transport trolley 10, the operating lever 100 has an engaging position in which the engaging convex portion 105 engages with any one of the engaging concave portions 111, 112, 113 of the engaging member 110, and the engaging concave portion 111. From both 112 and 113, the engaging convex portion 105 is rotatable between the retracted position and the retracted position.

By setting the operating lever 100 in the retracted position, the operating member 90 can slide with respect to the first support column 50. At this time, depending on the position of the operating member 90, each movable strut 70 approaches or separates from the first strut 50 via each link mechanism 150.

Then, by setting the operation lever 100 to the engaging position, each movable column 70 (operation member 90) is positioned. Hereinafter, the position of each movable column 70 when the engaging convex portion 105 of the operating lever 100 is engaged with the first engaging concave portion 111 of the engaging member 110 is referred to as a first position. Further, the position of each movable column 70 when the engaging convex portion 105 is engaged with the second engaging concave portion 112 is referred to as a second position. Further, the position of each movable column 70 when the engaging convex portion 105 is engaged with the third engaging concave portion 113 is referred to as a third position.

As shown in FIG. 1, a cylindrical stopper 95 is fixed to the outer periphery of the upper end portion of the first support column 50. A compression coil spring 96 as an urging member is extrapolated below the stopper 95 in the first support column 50. The inner diameter of the compression coil spring 96 is smaller than the outer diameter of the stopper 95. The compression coil spring 96 is compressed by the operating member 90 and the stopper 95 in a state where the engaging convex portion 105 of the operating lever 100 is engaged with the first engaging concave portion 111 of the engaging member 110. The operating member 90 is urged downward.

The operation of this embodiment will be described.
In the transport trolley 10 of the present embodiment, the distance between the support portions 80 is changed as follows.

First, a process of increasing the distance between the support portions 80 will be described (hereinafter, process A).
As shown in FIGS. 1 and 4, when the operating lever 100 is rotated from the state where each movable support column 70 is in the first position to the retracted position, the engaging convex portion 105 of the operating lever 100 becomes the first engaging concave portion. Since it is retracted from 111, the operating member 90 descends due to its own weight. At this time, each upper support portion 151 of each link mechanism 150 connected to the operation member 90 is lowered together with the operation member 90. Further, the lower support portion 152 is fixed to the movable column 70. For these reasons, each movable column 70 is pressed toward the outside in the longitudinal direction X via the upper support portion 151, the link column 153, and the lower support portion 152. As a result, each movable strut 70 slides on each second strut 60 in a direction away from the first strut 50.

At this time, as shown in FIG. 5, the operating lever 100 is rotated in the direction of extending the tension coil spring 104. Therefore, the operating lever 100 tends to rotate clockwise around the shaft portion 103 due to the restoring force of the extended tension coil spring 104. Therefore, the operating member 90 descends with respect to the first support column 50 while the engaging convex portion 105 is pressed against the edge portion of the engaging member 110.

Next, when the operating member 90 further descends from the state shown in FIG. 5, the engaging convex portion 105 is tilted because the operating lever 100 is about to rotate clockwise around the shaft portion 103 as described above. It is engaged with the second engaging recess 112 while sliding on the portion 112a (see FIG. 6). That is, the position of the operating lever 100 becomes the engaging position again. As a result, as shown in FIG. 9, each movable strut 70 is positioned at the second position. In this state, the distance between the support portions 80 is larger than when the movable columns 70 are in the first position.

Next, when the operating lever 100 is rotated to the retracted position from the state where each movable column 70 is in the second position, the operating member 90 is further lowered by its own weight as shown in FIG. 7. At this time, in the same manner as described above, the operating member 90 descends with respect to the first support column 50 while the engaging convex portion 105 is pressed against the edge portion of the engaging member 110.

Next, when the operating member 90 further descends from the state shown in FIG. 7, the operating lever 100 is about to rotate clockwise around the shaft portion 103 as described above, so that the engaging convex portion 105 is an inclined portion. It is engaged with the third engaging recess 113 while sliding on the 113a (see FIG. 8). That is, the position of the operating lever 100 becomes the engaging position again. As a result, as shown in FIG. 10, each movable strut 70 is positioned at the third position. In this state, the distance between the support portions 80 is larger than when the movable columns 70 are in the second position.

Here, a speed suppressing mechanism 140 including a pinion gear 132 and a rack gear 134 meshed with each other is provided between the first support column 50 and the operating member 90. When the operating member 90 descends, the rack gear 134 integrated with the operating member 90 rotates the pinion gear 132. At this time, since the rotational movement of the pinion gear 132 acts as a mechanical resistance against the descent of the operating member 90, the descending speed of the operating member 90 is suppressed.

Further, a mechanical stopper 114 is provided at the lower end of the engaging member 110. Therefore, when the operating member 90 is further lowered by rotating the operating lever 100 to the retracted position from the state where each movable column 70 is in the third position, the engaging convex portion 105 and the mechanical stopper 114 come into contact with each other. .. At this time, the rotation restricting portion 106 comes into contact with the frame portion 91 of the operating member 90. As a result, the descent of the operating member 90 is restricted.

Subsequently, a process of reducing the distance between the support portions 80 will be described (hereinafter, process B).
Since the process B is the reverse of the process A, detailed description thereof will be omitted and only the differences from the process A will be described.

When reducing the distance between the support portions 80, the handle 93c or the handle 93d of the operating member 90 is gripped and the operating member 90 is slid upward with respect to the first support column 50. When the operating member 90 is lifted from the state where each movable strut 70 is in the third position (second position), the engaging convex portion 105 of the operating lever 100 becomes the third engaging recess 113 (second engaging). It moves while sliding on the inclined portion 113a (112a) of the recess 112). As a result, the operating lever 100 is rotated from the engaged position to the retracted position.

Next, when the operating member 90 is further raised, the engaging convex portion 105 is engaged with the second engaging recess 112 (first engaging recess 111), and each movable strut 70 is placed in the second position (first). Position).

In this way, the distance between the support portions 80 provided on each movable column 70 is changed.
The effect of this embodiment will be described.
(1) The transport trolley 10 is connected to the first support column 50, the operation member 90 slidably supported by the first support column 50 along the vertical direction Y, and the first support column 50, and is spaced apart from each other. It includes a pair of second columns 60 arranged in parallel. Further, it is slidably supported by a pair of second columns 60 along the longitudinal direction X, and is provided with a pair of movable columns 70 provided with the first column 50 interposed therebetween in the longitudinal direction X. Further, a link mechanism 150 that connects the operation member 90 and each movable strut 70 and changes the distance between the first strut 50 and the movable strut 70, and a positioning mechanism 120 that can position the movable strut 70 in the longitudinal direction X. To prepare for. Each movable column 70 is provided with a support portion 80 for supporting a plurality of points of the object 1.

According to such a configuration, when the operating member 90 is slid along the first strut 50, each movable strut 70 slides along the second strut 60 via the link mechanism 150. As a result, the distance between the operating member 90 and each movable strut 70 is changed. Further, a pair of movable columns 70 are provided so as to sandwich the first column 50 in the longitudinal direction X. Further, each movable column 70 is provided with a support portion 80. From these facts, by sliding the operating member 90 along the vertical direction Y, the distance between the operating member 90 and each movable column 70 can be changed, and the distance between the movable columns 70, that is, the support portion. The distance between the 80s can be changed. As a result, the amount of change in the distance between the support portions 80 with respect to the operation amount of the operation member 90 can be increased as compared with the configuration provided with only one movable support column 70.

Further, since the positioning mechanism 120 capable of positioning each movable column 70 in the longitudinal direction X is provided, the position of each support portion 80 provided on each movable column 70 can be fixed at a predetermined position. As a result, the distance between the support portions 80 can be fixed at a predetermined distance. Therefore, by changing the distance between the support portions 80 according to the shape of the object 1, the object 1 having a different shape can be transported.

(2) The positioning mechanism 120 has an engaging member 110 fixed to the first support column 50 and having a plurality of engaging recesses 111, 112, 113 formed at intervals in the vertical direction Y, and a plate of the operating member 90. It is provided with an operating lever 100 that is rotatably supported with respect to 94 and has an engaging protrusion 105 that can be engaged with the engaging recesses 111, 112, 113. The operating lever 100 is located between the engaging position where the engaging convex portion 105 engages with the engaging concave portions 111, 112, 113 and the retracted position where the engaging convex portion 105 retracts from the engaging concave portions 111, 112, 113. It is said that it can be displaced at.

According to such a configuration, the operation member 90 is provided with the operation lever 100 of the positioning mechanism 120. Further, the operating lever 100 has an engaging position in which the engaging convex portion 105 of the operating lever 100 engages with the engaging concave portions 111, 112, 113 of the engaging member 110 fixed to the first support column 50, and the engaging convex portion. The portion 105 can be displaced to a retracted position retracted from the engaging recesses 111, 112, 113. Therefore, in the state where the operating lever 100 is in the engaged position, the position of each movable strut 70 in the longitudinal direction X is determined by restricting the sliding of the operating member 90 with respect to the first strut 50. Further, in the state where the operation lever 100 is in the retracted position, the operation member 90 is allowed to slide with respect to the first support column 50, so that the position of each movable column 70 in the longitudinal direction X can be changed. Therefore, the positioning mechanism 120 can be realized with a simple configuration.

(3) The first strut 50 and each movable strut 70 extend along the vertical direction Y, and the pair of second strut 60s are arranged at intervals in the vertical direction.
According to such a configuration, the operating member 90 slides on the first support column 50 along the vertical direction Y. Therefore, when the operating member 90 is lowered, the weight of the operating member 90 can be utilized, and the force for operating the operating member 90 can be reduced. Therefore, the operability of the operating member 90 can be improved.

(4) A speed suppressing mechanism 140 for suppressing the speed when the operating member 90 descends is provided.
In the configuration in which the first support column 50 extends along the vertical direction Y, the operating member 90 descends due to its own weight, so that the operating member 90 may descend vigorously.

In this respect, according to the above configuration, since the speed suppressing mechanism 140 is provided, it is possible to prevent the operating member 90 from descending vigorously.
(5) A compression coil spring 96 as an urging member for urging the operating member 90 downward is provided between the operating member 90 in the first strut 50 and the upper second strut 60.

When the sliding resistance between each movable strut 70 and each second strut 60 is large, a large operating force is required when lowering the operating member 90.
In this respect, according to the above configuration, the operation of lowering the operating member 90 is supported by the urging force of the compression coil spring 96. Therefore, the operability of the operating member 90 can be improved.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-As shown in FIG. 11, a speed suppression mechanism 240 may be provided in addition to or in place of the speed suppression mechanism 140 of the present embodiment. The speed suppressing mechanism 240 includes a rope 201 having a weight 203 connected to one end thereof, and a plurality of pulleys 204 provided at intervals in the longitudinal direction X in the upper second support column 60, and the pulleys 204 are provided in the longitudinal direction X. A pair is provided with the first support column 50 interposed therebetween. The other end of the rope 201 is connected to the fixture 202 provided on the upper horizontal frame portion 91a. When the rope 201 is stretched via the pulley 204, the weight 203 is moved up and down in the direction opposite to the direction in which the operating member 90 moves up and down as the operating member 90 moves up and down along the vertical direction Y.

According to such a configuration, it is possible to suppress the operation member 90 from descending vigorously, and the operation of raising the operation member 90 is supported. Therefore, the operability of the operating member 90 can be improved.

A compression coil spring 96 that urges the operating member 90 upward may be provided between the operating member 90 in the first column 50 and the lower second column 60. In this case, the force that the operating member 90 tries to compress the compression coil spring 96 acts as a resistance force against the operating member 90, so that the same effect as that of the above modification can be obtained.

-Instead of the compression coil spring 96, a pair of magnets facing each other may be provided between the operating member 90 and the upper second support column 60 so that their magnetic poles are the same. Further, such a pair of magnets can be provided between the operation member 90 and the lower second support column 60.

In the transport trolley 10 of the present embodiment, the operating member 90 is configured to slide along the vertical direction Y, but the operating member 90 slides along the longitudinal direction X or the width direction Z. It may be configured to do so. Even in this case, the distance between the support portions 80 can be changed.

Further, in this case, each movable column 70 may be positioned in each second column 60. That is, for example, a concave groove may be provided at a predetermined position of each second support column 60, and a plunger protruding toward the second support column 60 may be provided inside the sliding member 71 of each movable support column 70. According to such a configuration, when each movable strut 70 moves to the predetermined position, the plunger enters the concave groove to position each movable strut 70.

In the present embodiment, a pair of movable columns 70 are provided so as to sandwich the first column 50 in the longitudinal direction X, but one movable column 70 is provided on one side of the first column 50 in the longitudinal direction X. May be good. In this case, one of the pair of support portions 80 may be provided on the movable column 70, and the other may be provided on a fixed support column different from the movable column 70 that supports the side frame 30 or the second column 60, for example. good.

1 ... Object, 10 ... Transporter, 20 ... Bottom frame, 21 ... Bottom strut, 22 ... Connecting member, 30 ... Side frame, 31 ... Frame body, 32 ... First support part, 33 ... Second support part, 34 ... Connecting body, 40 ... Caster, 50 ... First strut, 60 ... Second strut, 70 ... Movable strut, 70a ... Strut body, 71 ... Sliding member, 80 ... Support part, 81 ... Protective material, 90 ... Operation Member, 91 ... Frame part, 91a ... Horizontal frame part, 91b ... Horizontal frame part, 91c ... Vertical frame part, 91d ... Vertical frame part, 92 ... Sliding member, 93c ... Handle, 93d ... Handle, 94 ... Plate, 95 ... Stopper, 96 ... Compression coil spring, 100 ... Operating lever, 100a ... Bending part, 101 ... Grip part, 102 ... Extension part, 103 ... Shaft part, 104 ... Tension coil spring, 105 ... Engagement convex part, 106 ... Rotation restricting portion, 110 ... engaging member, 111 ... first engaging recess, 112 ... second engaging recess, 112a ... inclined portion, 113 ... third engaging recess, 113a ... inclined portion, 114 ... mechanical stopper, 120 ... Positioning mechanism, 131 ... Projection, 132 ... Pinion gear, 133 ... Mounting plate, 134 ... Rack gear, 140 ... Speed suppression mechanism, 150 ... Link mechanism, 151 ... Upper support, 151a ... Support shaft, 152 ... Lower support Part, 152a ... Support shaft, 153 ... Link pillar, 201 ... Rope, 202 ... Fixture, 203 ... Weight, 204 ... Pulley, 240 ... Speed suppression mechanism.

Claims (6)

A transport trolley equipped with a plurality of support portions for supporting a plurality of locations of an object.
The first pillar and
An operating member slidably supported by the first strut along the length direction of the first strut, and
A pair of second columns connected to the first column and arranged in parallel at intervals from each other.
Movable columns slidably supported by the pair of second columns along the length direction of the second column, and
A link mechanism that connects the operating member and the movable strut and changes the distance between the first strut and the movable strut.
A positioning mechanism capable of positioning the movable column in the length direction of the second column is provided.
The plurality of support portions are provided at intervals in the length direction of the second strut, and at least one of the plurality of support portions is provided on the movable strut.
Transport trolley. A pair of the movable columns are provided so as to sandwich the first column in the length direction of the second column.
The operating member and the pair of movable columns are connected to each other via the link mechanism.
Each of the pair of movable columns is provided with the support portion.
The transport trolley according to claim 1. The positioning mechanism is fixed to the first strut and can be displaced relative to the operating member and an engaging member having a plurality of engaging recesses formed at intervals in the length direction of the first strut. With an operating lever, which is supported by and has an engaging protrusion that is engageable with the engaging recess.
The operating lever is displaceable between an engaging position where the engaging convex portion engages with the engaging concave portion and a retracted position where the engaging convex portion retracts from the engaging concave portion.
The transport trolley according to claim 1 or 2. The first strut and the movable strut extend in the vertical direction.
The pair of second columns are vertically spaced apart from each other.
The transport trolley according to any one of claims 1 to 3. A speed suppressing mechanism for suppressing the speed when the operating member descends is provided.
The transport trolley according to claim 4. An urging member for urging the operating member downward is provided between the operating member in the first column and the second column on the upper side.
The transport trolley according to claim 4 or 5.

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