JP2000072238A - Hand-push load carrying cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand-push load carriage capable of transferring a load between a carriage side placement part and a transferring side placement part with easy operation. SOLUTION: This hand-push load carrying cart is provided with a linking mechanism D linking one operation part 8 with a holding part H so that the operation to the delivery side of the operation part 8 may make the holding part H conduct delivery operation of moving up to lift up a load W placingly- supported by a carriage side placement part 3, protruding, moving down to placingly-support the load W to the transferring side placement part of a targeted transferring point, and retreating, and operation to the receiving side of the operation part 8 may make the holding part H conduct receiving operation of protruding in a moving-down condition, moving up to lift up the load W placingly-supported on the transferring side placement part, retreating, and moving down to placingly-supports the load W on the carriage side placement part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bogie-side mounting portion for mounting and supporting a load, provided on the bogie main body, and a holding portion for holding the load being capable of vertically moving and retreating to and from the bogie main portion. And lifts up to lift the load placed and supported on the cart-side placement portion, and then protrudes, and subsequently places and supports the load on the transfer-side placement portion of the transfer target location. , Descending, subsequently retreating, and protruding in the descending state, then rise to lift the load placed and supported on the transfer-side placing part, then retreat, then, A manually-operated load configured to manually raise and lower and move the holding unit so that the holding unit performs a receiving operation that descends to place and support a load on the carriage-side mounting unit. The present invention relates to a transport vehicle.

[0002]

2. Description of the Related Art Conventionally, in such a hand-held load carrier, a lifting operation unit for raising and lowering a holding unit, and
There has been provided an operation unit for moving out of the holding unit. Then, when transferring the load from the trolley-side mounting portion to the transfer-side mounting portion, the worker raises the holding portion to lift the load from the trolley-side mounting portion, and then projects the holding portion. Then, the holding unit is lowered in order to place and support the load on the transfer-side mounting unit, and subsequently, in a procedure of retreating the holding unit, the holding unit is moved up and down and withdrawal operation, Both the elevating operation unit and the evacuation operation unit were operated. Also, when transferring a load from the transfer-side mounting portion to the trolley-side mounting portion,
The holding part is projected in a lowered state, and then the holding part is lifted to lift the load from the transfer-side mounting part, subsequently, the holding part is retired, and then the load is transferred to the carriage-side mounting part. In the procedure of lowering the holding unit for mounting and supporting, both the elevating operation unit and the evacuation operation unit are operated so as to move the holding unit up and down and withdraw.

[0003]

However, conventionally, both the operation unit for raising and lowering and the operation unit for egress and retreat are operated,
Since the operation of raising, lowering, projecting, and retreating the holding unit in a predetermined procedure is complicated, improvement has been desired.

The present invention has been made in view of the above circumstances, and a purpose thereof is to allow a simple operation to transfer a load between a carriage-side mounting portion and a transfer-side mounting portion. It is an object of the present invention to provide a hand-operated load carrier.

[0005]

According to the first aspect of the present invention, when one operation unit is passed to the operation side,
The holding part rises and the load is lifted from the trolley side mounting part,
Subsequently, the holding portion protrudes, the holding portion descends, the load is placed and supported on the transfer-side mounting portion, and then the holding portion retreats. Further, when one operating unit is operated to the receiving side, the holding unit protrudes in a lowered state, subsequently, the holding unit is lifted, the load is lifted from the transfer side mounting unit, and then the holding unit is retired. Subsequently, the holding unit is lowered, and the load is placed and supported on the carriage-side placing unit. In other words, it is possible to cause the holding unit to perform the raising, lowering, protruding, and retreating operations in a predetermined procedure so that the holding unit performs the passing operation by simply operating one operating unit to the passing operation side. Also, it is possible to cause the holding unit to perform the receiving operation by raising, lowering, projecting and retreating in a predetermined procedure so that the holding unit performs the receiving operation by simply operating one operating unit to the receiving side. You can. Therefore, the load can be transferred between the carriage-side mounting portion and the transfer-side mounting portion by a simple operation of simply operating one operation portion to the transfer operation side or the receiving operation side. Became.

According to the second aspect of the present invention, when one of the operation units is passed to the operation side, the cam mechanism causes the operation unit to operate.
The telescopic fork device goes up and the holding part goes up,
The telescopic fork device extends and the holding part protrudes,
The telescopic fork device descends, the holding part descends,
The telescopic fork device contracts, and the holding part is retired. Further, when one operating unit is operated to the receiving side, the telescopic fork device is extended in a lowered state and the holding unit is projected in a lowered state. Subsequently, the telescopic fork device is raised and the holding unit is raised. Then, the telescopic fork device is contracted and the holding part is retired. Subsequently, the telescopic fork device is lowered and the holding part is lowered.
Therefore, the extension / retraction operation of the holding unit is performed by the extension / contraction of the telescopic fork device.
The moving stroke can be increased, and for example, a larger load can be transferred.

According to the third aspect of the present invention, when the operating section is operated to the transfer operation side from the state in which the holding section is located at the retracted position in the lowered state, the drive section rotates once in the transfer operation direction. In addition, the relative positional relationship between the drive unit and the cam groove, in plan view, the drive unit reaches the transfer position from the reference position to the transfer position via the bogie-side inclined portion from the reference position, and further via the transfer-side inclined portion. It changes in a state of tracing back to the reference position. Then, while the drive unit moves circularly in the transfer operation direction while tracing the cam groove from the reference position through the bogie-side inclined portion to the transfer position, the driven portion is raised by the bogie-side inclined portion. As a result, the fork device connected thereto rises, and the follower portion protrudes because the interval of the loop shape of the cam groove is shorter than the diameter of the circular movement trajectory of the drive portion in the retracting direction of the holding portion. As a result, the telescopic fork device extends. Further, while the drive unit moves circularly while tracing the cam groove from the transfer position to the reference position via the transfer side inclined portion, the transfer side inclined portion lowers the fork as the driven portion descends. When the device descends and the interval between the loop shapes of the cam grooves in the retracting direction is shorter than the diameter of the circular movement trajectory of the driving portion, the telescopic fork device contracts as the driven portion retreats.

[0008] When the operating part is operated to the receiving side from the state in which the holding part is located at the retracted position in the lowered state, while the driving part makes one rotation in the receiving operation direction opposite to the hand-over operation direction,
The relative position relationship between the drive unit and the cam groove is, in plan view, the drive unit reaches the transfer position from the reference position via the transfer side inclined portion from the reference position to the cam groove, and further, via the bogie side inclined portion. It changes in the state of tracing back to. Then, while the drive unit moves circularly while tracing the cam groove from the reference position to the transfer position via the transfer side inclined portion in the receiving operation direction opposite to the transfer operation direction, Since the interval of the loop shape of the cam groove is shorter than the diameter of the circular movement trajectory of the driving section, the telescopic fork device is extended in a descending state as the driven section projects, and the passing side inclined section is operated. By following the opposite direction to the time, the telescopic fork device rises as the driven part rises. Further, while the drive unit makes a circular movement while tracing the cam groove from the passing position to the reference position via the bogie-side inclined portion, the interval of the loop shape of the cam groove in the retracting direction is equal to that of the drive unit. By being shorter than the diameter of the circular movement trajectory, the telescopic fork device contracts as the driven portion retreats, and the driven portion descends by following the bogie-side inclined portion in the opposite direction to that at the time of the crossing operation. As a result, the telescopic fork device descends.

Therefore, the holding portion is raised and lowered so that the holding portion can perform the passing operation and the receiving operation by one cam mechanism composed of a driving portion and a driven portion having a cam groove engaged with the driving portion. , Protruding and retreating operations can be performed in a predetermined procedure. By the way, the operation of the lifting and lowering cam section for raising and lowering the holding section and the moving cam section for moving the holding section to and from the holding section is performed by operating one operating section to the operating side or the receiving operating side. In order to perform the operation, it is conceivable to provide the holding unit in association with each other so that each operation of raising, lowering, projecting, and retreating can be performed in a predetermined procedure. However, in this case, it is necessary to provide the ascending / descending cam portion and the egress / retreat cam portion in a linked state as described above, and the configuration becomes complicated.
On the other hand, according to the characteristic configuration of the third aspect, the transfer operation and the receiving operation can be performed to the holding unit by one cam mechanism, so that the configuration can be simplified. Therefore, the implementation cost of the present invention can be reduced.

According to the fourth aspect of the present invention, a plurality of operation units are individually operated to the transfer operation side or the reception operation side, so that the transfer operation is performed to the holding unit corresponding to each operation unit. , A receiving operation can be performed. Therefore, the load can be transferred between the trolley-side mounting portion and the transfer-side mounting portion while a plurality of loads are being transported by one push-type load transporting trolley. Work can be performed more efficiently.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a push-type carrier according to the present invention. A hand-held load transporting trolley V (hereinafter may be simply referred to as a trolley V) is configured by supporting a trolley main body M with four caster wheels 1 as shown in FIGS. 1 to 3. In some cases, the worker grips the handle 2 and moves and steers the carriage V to perform the load transport operation. For example, when the front, rear, left, and right directions are expressed based on the state in which the handle 2 is in front, the cart V can be moved in any of the front, rear, left, and right directions by the four caster wheels 1.

The carriage main body M is provided with two carriage-side mounting portions 3 arranged on the upper surface thereof side by side in the front-rear direction. In order to align the position with respect to the transfer side mounting portion 4 of T,
The two engaged portions 6 to be engaged with the engaging portions 5 are provided so as to correspond to the respective carriage-side mounting portions 3.
The engaged portion 6 of the truck V is formed in a substantially trapezoidal shape in plan view, and the engaging portion 5 at the load transfer target location T has a shape conforming to the shape of the engaged portion 6 of the truck V. It is formed. The load transfer target location T corresponds to, for example, a load receiving unit or a load unloading unit of various processing apparatuses, and the cart V is used to transport a processing object between the processing apparatuses.

The carriage main body M is provided with two telescopic fork devices F corresponding to the respective carriage-side placing portions 3, and the load W placed on the carriage-side placing portion 3 is secondly moved. In a state in which it can be lifted and lowered by the guide of the lifting and lowering guide mechanism E so that it can be lifted while being placed on the fork portion 16, and can be freely expanded and contracted by a sliding operation in the left and right direction guided by a pair of slide guide rails 7. It is provided in such a state. That is, the second fork portion 16 at the distal end of the telescopic fork device F is made to function as a holding portion H for placing and holding the load W, and the holding portion H is
The bogie main body M is provided so as to be able to move up and down freely by a lifting and lowering guide mechanism E, and to be able to freely move back and forth in the left and right direction by expanding and contracting an extendable fork device F. Therefore, the direction in which the holding portion H moves out is the direction along the left-right direction.

In the bogie main body M, two handles (corresponding to one operating portion) 8 corresponding to each telescopic fork device F are provided at the end on the handle 2 side of the upper surface thereof in the left-right direction. Are provided so that they can be rotated freely.

Further, by the rotation operation of the handle 8 to the transfer operation side, the load W supported on the carriage-side mounting portion 3 is mounted on the holding portion H and supported on the transfer-side mounting portion 4. Is carried out, and the handle 8 is rotated to the receiving operation side opposite to the passing operation side, so that the load placed and supported by the holding portion H on the transfer side placing portion 4 is held. A linking mechanism D for linking the handle 8 and the holding portion H is provided for each of the two telescopic fork devices F so as to perform a receiving operation for mounting and supporting the W on the carriage-side mounting portion 3. It is. In the transfer operation, the load W is lifted to lift the load W supported on the carriage-side mounting portion 3, then protrudes, and then the load is transferred to the transfer-side mounting portion 4 at the transfer target location T. This is a series of operations of the holding unit H which descends to support the mounting and then retreats, and the receiving operation is such that the load protruding in the descending state and subsequently supporting the load mounted and supported by the transfer side mounting unit 4. This is a series of operations of the holding unit H that rises to lift, then retreats, and then descends to place and support the load W on the carriage-side placing unit 3.

Next, the lifting guide mechanism E will be described with reference to FIG. Incidentally, the two elevating guide mechanisms E respectively corresponding to the telescopic fork devices F are similarly configured. The elevating guide mechanism E includes a pair of elevating guide rails 9 and a pair of telescopic arms 10 and the like, which are slidably supported by the elevating guide rails 9 in a vertical direction. The first arm portion 10a of the telescopic arm 10 is slidably supported by the elevating guide rail 9, and the cable-like body 12 having one end connected to the balance weight 11 is connected to the other end of the second arm portion 10b of the telescopic arm 10 at the other end. It is connected to the lower end and is hung around the pulley 13 at the upper end of the lifting guide rail 9, so that the action of the balance weight 11 reduces the operating force required to raise the telescopic fork device F and smoothly. It is possible to descend.

Next, the telescopic fork device F will be described with reference to FIGS. 1 to 3 and FIG. Each of the two telescopic fork devices F has the same configuration. An elevator 14 is provided at the upper end of the second arm portion 10b of each of the four telescopic arms 10 so as to be supported.
In addition, a pair of slide guide rails 7 are provided in a state where their longitudinal directions are along the left-right direction. The telescopic fork device F includes a first fork portion 15 slidably supported by a pair of slide guide rails 7, a second fork portion 16 slidably supported by the first fork portion 15, and the like. It is provided for. Further, a pair of pulleys 1 is provided on each side of the first fork portion 15 in the front-rear direction.
7 are provided side by side in the left-right direction, and a toothed belt 18 is wound around the pair of pulleys 17. Then, in a state where the telescopic fork device F is in a contracted state, a portion of the toothed belt 18 near the left pulley 17 above the pair of pulleys 17 is fixed to the second fork portion 16, In the attached belt 18, a portion below the pair of pulleys 17 near the right pulley 17 is fixed to the lift 14 side. Therefore, as shown in FIG. 5A, when the first fork portion 15 is moved to the right side, the toothed belt 18
In the direction of the solid line, and the second fork portion 16
By sliding the fork portion 15 to the right, the telescopic fork device F extends as shown in FIG. Conversely, when the first fork portion 15 is moved leftward from the state shown in FIG.
7 in the direction of the dashed arrow, the second fork 16 slides the first fork 15 to the left, and FIG.
As shown in FIG. 7, the telescopic fork device F contracts.

The two telescopic fork devices F are provided such that the respective holding portions H are located at the same position in the left-right direction in each of the contracted state and the extended state.

Next, the linkage mechanism D will be described with reference to FIGS. The two linkage mechanisms D respectively corresponding to the telescopic fork devices F are similarly configured.
The linking mechanism D includes a cam mechanism C that interlocks and connects the telescopic fork device F and the handle 8 so that the telescopic fork device F moves up and down and expands and contracts so that the holding portion H performs the transfer operation and the receiving operation. is there. The cam mechanism C is moved in the handing direction along with the turning operation of the handle 8 to the handing side, and in the receiving direction opposite to the handing direction with the turning operation of the handle 8 toward the receiving side, The telescopic fork device F has a drive lever 19 as a drive unit linked to the handle 8 and a cam groove 20 that engages with the drive lever 19 so as to move in a circle around the axis R facing in the vertical direction. And a cam block 21 as a connected driven portion.

As shown in FIG. 4, a shaft 22 which rotates integrally with the handle 8 is extended below the handle 8, and a pulley 23 is provided at the lower end of the shaft 22. Further, a pulley 24 is provided on the bogie main body M so as to be rotatable around the vertical axis R, and an arm 25 is extended on the pulley 24 so as to extend in the horizontal direction.
Has been erected. Then, those two pulleys 23, 2
4 and the handle 8 is rotated to the transfer operation side, whereby the drive lever 19 moves circularly around the vertical axis R in the transfer operation direction, and conversely, the handle 8 is moved to the transfer operation side. The drive lever 19 is configured to rotate circularly around the vertical axis R in the receiving operation direction opposite to the passing operation direction by rotating to the opposite receiving operation side.

As shown in FIG. 6, the shaft of the drive lever 19 is fitted at the upper end of the drive lever 19 so as to be fitted into a cam groove 20 to be described later and to be able to move relative to the cam groove 20 smoothly. A roller 27 rotatable around the core and a ball caster 28 are provided.

The two telescopic fork devices F are provided so that the respective holding portions H are located at the same position in the left-right direction in each of the contracted state and the extended state. Are appropriately set with the arrangement of the two handles 8 and the two pulleys 24 and the lengths of the two belts so that can be operated by the corresponding handles 8 respectively.

The cam block 21 includes a telescopic fork device F
Is connected to a lower portion of the first fork portion 15. The lower surface of the cam block 21 is formed on an inclined surface inclined in the left-right direction, that is, in the retreating direction, in a state in which the lower surface in a front view is higher on the left side, that is, in the retreating direction, and is opened downward on the inclined surface. A cam groove 20 is formed. As shown in FIGS. 7 and 8, the cam groove 20 is formed in a loop shape having an interval shorter than the diameter of the circular movement trajectory of the drive lever 19 in the retracting direction (the left-right direction) of the holding portion H in plan view. And a reference position P at which the drive lever 19 positions the holding portion H in the retired state.
v, the truck-side inclined portion Sv for raising the cam block 21 as it moves in the transfer operation direction (the direction indicated by the solid arrow in FIG. 7), and the driving lever 19 positions the holding portion H in a protruding state. And a transfer-side inclined portion St for lowering the cam block 21 as it moves in the transfer operation direction from the transfer position Pt to be transferred.

To further explain, in plan view, the reference position Pv and the transfer position Pt are set so as to pass through the axis R and to be located on a virtual straight line L1 extending in the left-right direction. The bogie-side inclined portion Sv has a radius which is the same as the radius r of the circular movement trajectory of the drive lever 19 in a plan view, has a central angle of 60 ° with respect to the virtual straight line L1, and has a reference position Pv
It is formed in an inclined shape that is located lower as it gets away from it.
The transfer position Pt is at the same height as the end (lower end) of the bogie-side inclined portion Sv opposite to the reference position Pv,
In plan view, it is set so as to be located at the intersection of the virtual straight line L2 and the virtual straight line L1 passing through the lower end of the bogie-side inclined portion Sv and extending in the front-rear direction. Transfer side inclined part St
In a plan view, the radius is the same as the radius r of the circular movement trajectory of the drive lever 19, and the central angle to the side opposite to the bogie-side inclined portion Sv with respect to the virtual straight line L1 is 60 °, and the crossing position is It is formed in an inclined shape that is located higher as it is farther from Pt. Then, the reference position Pv is set to the transfer side inclined portion St.
At the same height as the end (upper end) on the opposite side to the transfer position Pt, and a virtual straight line diameter L3 and a virtual straight line passing through the upper end of the transfer side inclined portion St and extending in the front-rear direction in plan view. It is located at the intersection with L1.

The lower end of the truck-side inclined portion Sv and the end of the transfer-side inclined portion St where the transfer position Pt is located are
A virtual straight line connects the upper end of the transfer side inclined portion St and the end where the reference position Pv of the bogie side inclined portion Sv is located at the transfer side horizontal portion Bt extending horizontally along the virtual straight line L2. They are connected by a bogie-side horizontal portion Bv extending horizontally in a state along L3. Therefore, the cam groove 20
In a plan view, the holding portion H is formed in a loop shape in which the distance in the retreating direction (the left-right direction) is shorter than the diameter of the circular movement locus of the drive lever 19.

Next, an operation when the load W is transferred between the carriage-side mounting portion 3 and the transfer-side mounting portion 4 will be described with reference to FIGS. First, a transfer operation when the load W is transferred from the carriage-side mounting portion 3 to the transfer-side mounting portion 4 will be described with reference to FIGS. When the telescopic fork device F is lowered and contracted, and the holding portion H is located at the retracted position, that is, the drive lever 19 is located at the reference position Pv of the cam groove 20, the handle 8 is passed. One rotation to the operation side. While the handle 8 rotates 60 °,
The drive lever 19 moves the cart-side inclined portion Sv of the cam groove 20 as shown in FIG.
, The cam block 21 rises without moving in the retreating direction. Therefore, the telescopic fork device F connected to the cam block 21 rises without moving in the retracting direction, so that the load W on the carriage-side placing portion 3 is lifted. In addition, handle 8
Is rotated by 120 °, the drive lever 19 passes through the transfer-side horizontal portion Bt of the cam groove 20 and moves to the transfer position Pt, so that the cam block 21 protrudes in a raised state. Accordingly, since the first fork portion 15 of the telescopic fork device F protrudes due to the projection of the cam block 21, the telescopic fork device F extends in the up state, and the load W is positioned above the transfer-side mounting portion 4. I do. Further, while the handle 8 rotates by 60 °, the drive lever 19 moves the transfer-side inclined portion St of the cam groove 20 in the direction shown by the solid line arrow in FIG. It descends without moving. Therefore, since the telescopic fork device F descends without moving in the retracting direction, the load W is lowered to the transfer-side placing portion 4. Further, when the handle 8 rotates by 120 °, the drive lever 19 passes through the bogie-side horizontal portion Bv of the cam groove 20 and moves to the reference position Pv, so that the cam block 21 retreats in the lowered state. Accordingly, the retraction of the cam block 21 causes the first fork portion 15 of the telescopic fork device F to move.
Is retracted, the telescopic fork device F contracts in the lowered state.

Next, a receiving operation when the load W is received from the transfer-side mounting portion 4 to the bogie-side mounting portion 3 will be described with reference to FIGS. In the state where the telescopic fork device F is lowered and contracted and the holding portion H is located at the retreat position, that is, the drive lever 19 is moved to the reference position Pv of the cam groove 20.
In this state, the handle 8 is turned once to the receiving operation side opposite to the hand-over operation side. Handle 8 is 120 °
During the rotation, the drive lever 19 moves along the bogie-side horizontal portion Bv of the cam groove 20, so that the cam block 21 projects while being lowered. Therefore, due to the projection of the cam block 21, the telescopic fork device F is extended in the lowered state, and is inserted below the load W placed on the transfer-side placing portion 4. Further, when the handle 8 rotates by 60 °, the drive lever 19 passes through the transfer side inclined portion St of the cam groove 20 in the direction opposite to the transfer operation as indicated by the broken arrow in FIG. 8 to the transfer position Pt. Since it moves, the cam block 21 rises without moving in the retreating direction. Therefore, the telescopic fork device F rises without moving in the retracting direction, so that the load W on the transfer-side placing portion 4 is lifted. Further, when the handle 8 rotates by 120 °, the drive lever 19 moves on the transfer-side horizontal portion Bt of the cam groove 20, so that the cam block 21 retreats in the raised state. Therefore,
Due to the retraction of the cam block 21, the telescopic fork device F contracts in the raised state, and the load W is located above the carriage-side mounting portion 3. Further, when the handle 8 is rotated by 60 °, the drive lever 19 passes through the bogie-side inclined portion Sv of the cam groove 20 in the direction opposite to the direction of the hand-over operation as shown by a broken arrow in FIG. Since it moves, the cam block 21 descends without moving in the retracting direction. Accordingly, since the telescopic fork device F descends without moving in the retreating direction, the load W is lowered onto the carriage-side mounting portion 3.

[Another Embodiment] Next, another embodiment will be described. (A) In the above embodiment, the cam block 21
Telescopic fork device F by reciprocating movement in the
Is extended and retracted, and the holding unit H is configured to move in and out.
Alternatively, the telescopic fork device F may be omitted, and the holding unit H may be moved back and forth by reciprocating the cam block 21 in the moving direction.

(B) The specific configuration of the linkage mechanism D is not limited to the configuration exemplified in the above embodiment. For example, a lift cam unit for moving the holding unit H up and down and a cam unit for moving the holding unit H back and forth are provided. By operating the operation side or the receiving operation side, it is possible to cause the holding unit H to perform the raising, lowering, projecting, and retreating operations in a predetermined procedure so that the holding unit H performs the passing operation and the receiving operation. As needed, they may be provided in association with each other.

(C) The specific configuration for linking one operating unit and the driving unit can be variously changed. In the above embodiment, one operation unit is constituted by the rotatable handle 8,
By rotating the handle 8 to the hand-over operation side and the receiving operation side opposite thereto, the drive lever 1 as a drive unit is driven.
9 is configured to move in a circle in the transfer operation direction and the receiving operation direction opposite thereto. Instead of this, for example, one operation unit is configured to be reciprocally movable in a linear manner, and the one operation unit is driven by a linear movement operation to a transfer operation side and a receiving operation side opposite thereto. The lever 19 may be configured to move in a circle in the transfer operation direction and the receiving operation direction opposite thereto in an interlocking configuration.

(D) The shape of the cam groove 20 can be variously changed. For example, the center angles of the cart-side inclined portion Sv and the transfer-side inclined portion St that are arc-shaped in plan view are not limited to 60 ° illustrated in the above embodiment, and may be larger than 60 °, or , May be smaller.

(E) The mode of holding the load W in the holding section H is the same as the load W as exemplified in the above embodiment.
However, the present invention is not limited to the mode in which
For example, various forms such as a form in which the load W is held and held, a form in which the load W is suspended and held, and a form in which the load W is held by suction are possible. (F) In the above embodiment, the case where two holding portions H are provided has been exemplified, but the number of holding portions H can be changed, and may be one, three or more.

[Brief description of the drawings]

FIG. 1 is a side view of a hand-operated load carrier.

FIG. 2 is a front view of a hand-operated load carrier.

FIG. 3 is a plan view of a hand-held load carrier.

FIG. 4 is a perspective view showing a linkage configuration between a handle and a drive lever.

5A is a front view showing the telescopic fork device in a contracted state, and FIG. 5B is a front view showing the telescopic fork device in an extended state.

FIG. 6 is a perspective view showing a main part of a drive lever.

FIG. 7 is a diagram showing a shape of a cam groove in a plan view.

FIG. 8 is a plan view showing a linked state between the drive lever and the cam groove due to rotation of the drive lever.

FIG. 9 is a diagram showing in chronological order the relationship between the turning operation of the handle and the raising and lowering and expansion and contraction of the telescopic fork device during the handing operation.

FIG. 10 is a diagram showing in chronological order the relationship between the turning operation of the handle at the time of the receiving operation and the elevating and retracting of the telescopic fork device.

[Explanation of symbols]

 3 Carriage-side mounting part 4 Transfer-side mounting part 8 Operation part 19 Drive part 20 Cam groove 21 Follower part C Cam mechanism D Linkage mechanism F Telescopic fork device H Holder M Carriage body Pv Reference position Pt Transfer position Sv Truck Side inclined part St Transfer side inclined part W Load

Claims (4)

[Claims] 1. A bogie-side mounting portion for mounting and supporting a load is provided on a bogie main body portion, and a holding portion for holding a load is provided on the bogie main body portion so as to be capable of ascending and descending operations and moving out and back. It rises to lift the load placed and supported on the side placement part, then protrudes, then descends to place and support the load on the transfer side placement part of the transfer target location, and then A retreating transfer operation, and projecting in a descending state, subsequently rising to lift a load placed and supported on the transfer-side placing portion, subsequently retreating, and subsequently loading the load on the cart side. A manually-operated load-carrying truck configured to manually lift and lower and move the holding unit so as to cause the holding unit to perform a lowering receiving operation to be placed and supported on the mounting unit, An operation of one operation unit to the handover operation side causes the holding unit to perform the handover operation. And a hand-operated load-carrying cart provided with a linkage mechanism for linking the operation unit and the holding unit so that the holding unit performs the receiving operation by operating the operation unit on the receiving operation side. . 2. A telescopic fork device having the holding portion at a tip thereof is provided on the bogie main body so as to be able to move up and down, and the linkage mechanism is configured to cause the holding portion to perform the transfer operation and the receiving operation. The hand-held load carrier according to claim 1, further comprising a cam mechanism that interlocks and connects the telescopic fork device and the operation unit so as to move the telescopic fork device up and down and expand and contract. 3. The transfer mechanism according to claim 1, wherein the cam mechanism is opposite to the transfer operation direction in response to the operation of the operation unit toward the transfer operation side and is opposite to the transfer operation direction in accordance with the operation of the operation unit to the receiving operation side. A driving unit associated with the operation unit so as to circularly move around an axis oriented in the vertical direction in the receiving operation direction of the direction,
A driven portion connected to the telescopic fork device having a cam groove engaged with the driving portion, wherein the cam groove has an interval in a retracting direction of the holding portion in a plan view. The driven part is raised in a loop shape shorter than the diameter of the circular movement trajectory of the driving part, and moves in the handing-off direction from the reference position at which the driving part positions the holding part in the retreated state. A trolley-side inclined portion for
A transfer-side inclined portion for lowering the driven portion as the drive portion moves in the transfer operation direction from a transfer position where the holding portion is positioned in a protruding state. 2. The hand-held load carrier according to 2. 4. The hand-operated type according to claim 1, wherein a plurality of said holding portions are provided, and said operating portion and said linkage mechanism are provided for each of said plurality of holding portions. Load transport trolley.