JP6206313B2 - Handcart - Google Patents

Description

  The present invention relates to a hand cart.

  When transporting heavy objects that cannot be transported by one worker, transporting by two or more workers is carried out, but even when transporting by two or more workers In addition, carrying a heavy object requires a large work load. For this reason, a fork-type transporter that can be manually pushed is proposed in Patent Document 1.

  The hand cart of Patent Document 1 includes a transporter body provided with a forklift part for placing and supporting an object to be transported, two sets of main wheels provided at a front part and a rear part of the transporter body, A jack for raising and lowering the forklift and a hydraulic cylinder are provided. The front part of the transporter main body is a pair of forks protruding horizontally at the forklift part, and a pair of tires constituting the main wheel are rotatably supported on the lower surface of each fork. ing. And the said transport device raises a forklift part by operating the hydraulic cylinder of a jack. This transport vehicle has an advantage that work carried by a person can be reduced.

JP 2011-46254 A

  By the way, in the hand cart of Patent Document 1, since the tire is pivotally supported below the pair of forks, the operator lifts the object to be transported above the height including the height of the tire, and It must be put on the fork. For this reason, it is necessary for two or more workers to be carried on the fork that is a heavy object that cannot be carried by one worker. In addition, there is a problem that it takes time for the worker to put on the fork.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a hand cart that can be stably transported with the fork tip tilted obliquely upward, without requiring time for the work of placing the object to be transported.

In order to solve the above problems, a hand cart of the present invention is supported by a chassis main body having a first wheel at a lower portion, a pair of forks protruding in one direction with respect to the chassis main body, and the chassis main body. A footrest that protrudes in a direction opposite to the protruding direction of the fork, and a footrest that is provided on the footrest and that is positioned higher than the first wheel in the first state in which the fork is directed horizontally or obliquely downward. A second wheel disposed at a position lower than the height in the first state in the second state in which the footrest is inclined so that the tip of the fork is directed obliquely upward, and A handle provided on the upper portion of the chassis body, and a pair of forks protruding oppositely from each other on the opposite side surfaces of the pair of forks so as to be detachably engaged with a groove of a transported object placed on the forks. and, before A fall prevention member for preventing the fall when the chassis main body takes the first state is provided, and the chassis main body holds the fall prevention member so that the two positions of the first position and the second position are movable. The first position is a position where the fall prevention member abuts against the ground on which the first wheel contacts the ground to hold the fork in the first state, and the second position is The position where the fall prevention member is separated from the ground and the second wheel is allowed to abut on the ground to be grounded and can be held in the second state .

Further, when the handle provided at the upper part of the chassis main body is a first handle, it is preferable that a second handle is provided at a central part in the vertical direction of the chassis main body .

  According to the present invention, there is no need for time for the work of placing the object to be transported, and there is an effect that the fork can be stably transported in a state where the tip of the fork is easily tilted upward.

The perspective view which looked at the handcart of one embodiment from diagonally forward. The perspective view which looked at the hand truck of one Embodiment from diagonally back. The side view of the handcart of one Embodiment. The principal part perspective view of a fall prevention member. (A), (b) is explanatory drawing of an effect | action of a fall prevention member. Explanatory drawing when using a handcart. Explanatory drawing when using a handcart. Explanatory drawing when using a handcart. Explanatory drawing when using a handcart. Explanatory drawing when using a handcart. Explanatory drawing when using a handcart.

Hereinafter, an embodiment in which the hand cart of the present invention is embodied as a lashing rail cart will be described with reference to FIGS.
The lashing rail is used for the chassis dynamo system. The chassis dynamo system is a device that operates after setting a condition of a test vehicle and absorbs generated power. The chassis dynamo system is a system that absorbs power in the state of an actual vehicle, and includes a roller that carries driving wheels and rotates instead of a road, and a vehicle restraining device that restrains the vehicle. There are various types of vehicle restraint devices, but one type of vehicle restraint device of a chassis dynamometer system for a 2WD four-wheel vehicle restrains tires of non-driven wheels. The lashing rail is used in a part of the vehicle restraining device that restrains the tire of the non-drive wheel. A restraint for restraining the tire is attached to the lashing rail so that the position thereof can be adjusted in the vehicle width direction. The lashing rail is a long plate-shaped heavy object that is difficult for an operator to carry alone.

  As shown in FIG. 1, the lashing rail transport vehicle 10 includes a chassis main body 20 having a pair of wheels 23 at a lower part, a footrest base 40 fixed to the chassis main body 20, an upper part, a center part, and a lower part of the chassis main body 20. Each of which has a handle 48 fixed thereto, an insertion adjusting bar 38 and forks 50 and 52.

  The chassis main body 20 includes a base member 22 provided so as to extend in the vehicle width direction (left-right direction) orthogonal to the front-rear direction of the lashing rail transport vehicle 10, and a frame fixed to the front portion of the base member 22. 30. The base member 22 is formed of angle steel having an L-shaped cross section having a front wall 24 and a lower wall 26. The cross-sectional shape of the base member 22 is not limited, and may be an I shape, an H shape, a channel shape, a flat plate shape, a cylindrical shape, or the like. The wheels 23 are free casters attached to the lower surfaces of the left and right end portions of the base member 22. The wheel 23 corresponds to the first wheel.

  As shown in FIG. 1, the frame 30 includes a pair of column portions 32 and 34 that are arranged on the left and right sides and extend in the vertical direction, and bridge portions 36 that respectively connect the upper and lower end portions of both the column portions 32 and 34. 37. Although the pillar parts 32 and 34 and the bridge | crosslinking parts 36 and 37 consist of square-tube-shaped steel materials, the shape is not limited.

  The frame 30 is supported by fixing the lower portions of the two pillar portions 32 and 34 to the front wall 24 of the base member 22 by welding or the like. The fixing method is not limited to welding, and for example, fastening with bolts and nuts may be used.

As shown in FIGS. 1 and 2, the handle 48 is fixed to the upper surface of the bridging portion 36 and extends in the left-right direction. The handle 48 corresponds to a first handle.
A pair of brackets 39 extending rearward are fixed to the rear surface of the central part in the vertical direction of the column parts 32 and 34. An insertion adjustment bar 38 is installed between the brackets 39. The insertion adjusting bar 38 corresponds to the second handle.

  As shown in FIGS. 1 and 2, forks 50 and 52 are fixed to the lower portions of the column portions 32 and 34 and the bridge portion 37 by welding or the like, respectively. The forks 50 and 52 are formed of angle-shaped steel with an L-shaped cross section having horizontal pieces 50a and 52a and vertical pieces 50b and 52b formed so as to be orthogonal to the horizontal pieces 50a and 52a, and are parallel to each other. So that it extends forward. The forks 50 and 52 are arranged so that the horizontal pieces 50a and 52a face each other. As shown in FIG. 1, the front ends of the horizontal pieces 50a and 52a have oblique or arcuate guides.

  The vertical pieces 50b and 52b have side surfaces of a pair of forks facing each other. The horizontal pieces 50a and 52a protrude from the mutually opposing side surfaces of the pair of forks described above, and correspond to an engaging portion that removably engages with a groove of the object to be conveyed, which will be described later.

  On the upper surface of the lower wall 26 of the base member 22, a footrest 40 is fixed to a middle portion in the left-right direction via a base 28. As shown in FIGS. 1 and 2, the footrest 40 is disposed rearward of the frame 30, and the rear end portion 40 a extends leftward and rightward than the front end portion 40 b and the intermediate portion 40 c, and is entirely T-shaped. It is formed in a shape.

A pair of wheels 60 are attached to the lower surfaces of the left and right side portions of the rear end portion 40a. The pair of wheels 60 is a free caster. The wheel 60 corresponds to a second wheel.
As shown in FIG. 3, the height of the wheel 60 from the horizontal ground Z when the forks 50 and 52 are in a horizontal state is higher than that of the wheel 23. In FIG. 3, the wheel 60 has a height of h1 from the ground Z. On the other hand, in FIG. 3, the height h2 (≠ 0) from the ground Z of the forks 50 and 52 in the horizontal state is h2 <h1. Accordingly, the forks 50 and 52 can be directed horizontally and obliquely downward. That is, the chassis main body 20 can take a forward inclined posture state from the horizontal state until the tips of the forks 50 and 52 are grounded. Further, the chassis main body 20 can transition from the horizontal state and take a rearward tilted state in which the wheels 60 are grounded.

  The horizontal state or the forward inclined posture state of the forks 50 and 52 corresponds to the first state. Further, the rearward tilted state in which the wheel 60 and the wheel 23 are both in contact with the flat ground Z corresponds to the second state. In this state, the tips of the forks 50 and 52 are directed obliquely upward.

  As shown in FIGS. 2 and 4, a holder 70 is fixed to the central portion of the column portion 32. The holder 70 extends rearward, and a cylindrical portion 72 extending in the vertical direction is provided at the tip thereof. On the upper and lower end surfaces of the cylindrical portion 72, latching grooves 74 and 75 each having a longitudinal groove and a lateral groove connected to the terminal end of the longitudinal groove are cut out.

A fall prevention member 80 is inserted into the cylindrical portion 72 so as to be movable up and down. The fall prevention member 80 is formed in a rod shape, and a grip portion 82 bent in an L shape is provided at the upper end thereof.
As shown in FIGS. 1, 2, and 4, a U-shaped guide member 44 is fixed to the rear end portion 40a of the footrest 40, and is formed between the guide member 44 and the rear end portion 40a. The lower portion of the fall prevention member 80 is inserted into the insertion hole 46 so as to be movable up and down.

  As shown in FIG. 4, a pair of locking pins 86 and 88 that are spaced apart in the vertical direction protrude from the falling prevention member 80 in the same direction. As shown in FIG. 2, the locking pin 86 is engaged with the vertical groove of the retaining groove 74 from above, and can be engaged up to the end of the horizontal groove. As shown in FIG. 3, when the locking pin 86 is engaged up to the end of the lateral groove of the retaining groove 74, the lower end of the fall prevention member 80 is brought into contact with the ground Z, and the forks 50, 52 are moved horizontally. Can be held in a state. That is, the pair of wheels 23 and the fall-preventing member 80 are configured to stably stand the lashing rail transport vehicle 10 and prevent the lashing rail transport vehicle 10 from falling.

The position of the fall prevention member 80 when the locking pin 86 is engaged in the end of the lateral groove of the latching groove 74 corresponds to the first position.
The locking pin 88 is engaged with the vertical groove of the latching groove 75 from below and can move to the end of the horizontal groove. As shown in FIG. 4, when the locking pin 88 is engaged to the end of the lateral groove of the latching groove 75, the lower end of the fall prevention member 80 is separated from the ground Z, and the wheel 60 and the wheel 23 are separated. Can be brought into a tilted posture state (that is, the second state) after both are grounded to the horizontal ground Z. In other words, the pair of wheels 23 and the pair of wheels 60 hold the forks 50 and 52 obliquely upward and can transport the object to be transported.

  The position of the fall prevention member 80 when the locking pin 88 is engaged in the end of the lateral groove of the latching groove 75 corresponds to the second position. Further, the cylindrical portion 72 of the holder 70 corresponds to a holding portion.

(Operation of the embodiment)
The operation of the lashing rail transport vehicle 10 configured as described above will be described with reference to FIGS.

  2 and 5A show a state in which the locking pin 86 is engaged with the end of the latching groove 74, and the lower end of the fall prevention member 80 is in contact with the ground Z, thereby preventing the fall. It is in a state.

  When using the lashing rail transport vehicle 10 in this state, the operator operates the grip portion 82 of the fall-preventing member 80 so that the locking pin 86 is pulled out of the locking groove 74 and is shown in FIG. As shown, the fall prevention member 80 is moved up. Then, the operator engages the locking pin 88 with respect to the vertical groove of the latching groove 75 from below and positions it at the end of the horizontal groove as shown in FIG. By the operation of the fall prevention member 80, the lower end of the fall prevention member 80 is separated from the ground Z as shown in FIG.

  Thereafter, the operator operates the handle 48 forward, and travels the lashing rail transport vehicle 10 in the succeeding posture as shown in FIG. 6 to the place where the transported object W as the lashing rail is placed. Let

  The lashing rail has a left and right width slightly shorter than the distance between the vertical pieces 50b, 52b of the forks 50, 52. Further, grooves Wa into which the horizontal pieces 50a and 52a of the forks 50 and 52 can be inserted (engaged) are formed linearly in the longitudinal direction of the object to be transported W on both left and right sides of the object to be transported W. Yes.

  The operator holds the handle 48 and the insertion adjusting bar 38 with his / her hand to bring the lashing rail transport vehicle 10 closer to the transported object W as shown in FIG. Then, the operator operates the handle 48 and the insertion adjusting bar 38 to adjust the vertical position of the horizontal pieces 50a, 52a of the forks 50, 52, and the horizontal piece 50a with respect to the groove Wa in the article W to be transported. , 52a are inserted. At this time, since the front ends of the horizontal pieces 50a and 52a have guides, they can be smoothly inserted (engaged) into the groove Wa. When the transported object W moves forward when the horizontal pieces 50a and 52a are inserted into the groove Wa of the transported object W, a stopper is provided so that the transported object W does not move. Also good.

  After the article to be transported W is moved to the bridging portion 37 at the lower part of the frame 30 by the insertion, the operator presses the footrest 40 downward with the foot until the wheel 60 contacts the ground Z as shown in FIG. At the same time, the handle 48 is pulled backward by hand to be in a backward inclined posture. After this leaning posture, the operator drops his / her foot from the footrest 40.

  Thereafter, as shown in FIG. 9, the operator handles the transported object W to the destination while keeping the lashing rail transport vehicle 10 in the backward tilted state, that is, with the wheels 60 and 23 both in contact with the ground Z. Operate 48 to carry. At the time of transportation, since the tips of the forks 50 and 52 are held obliquely upward, the article W to be transported does not fall from the forks 50 and 52 during transportation.

  As shown in FIG. 10, when the lashing rail transport vehicle 10 arrives at the destination, the handle 48 is pressed forward to bring the transported object W to the ground Z. Then, as shown in FIG. 11, the horizontal pieces 50a, 52a of the forks 50, 52 are detached from the groove Wa of the article to be transported W by operating the handle 48 and moving the lashing rail transport vehicle 10 backward. Let

According to this embodiment, the following effects can be obtained.
(1) The lashing rail transport vehicle 10 of the present embodiment includes a chassis main body 20 having wheels 23 (first wheels) at the lower part, and a pair of forks 50 protruding in one direction (forward) with respect to the chassis main body 20; 52 and a footrest 40 supported by the chassis main body 20 and protruding in a direction opposite to the protruding direction of the forks 50, 52. The footrest 40 is provided with wheels 60 (second wheels). The wheel 60 is disposed at a position higher than the wheel 23 in the horizontal state or the forward tilt posture state (first state) in which the forks 50 and 52 are horizontally disposed. Further, when the wheel 60 is in the rearward tilted state (second state) in which the footrest 40 is tilted so that the tips of the forks 50 and 52 are directed obliquely upward, the height position of the wheel 60 in the horizontal state is set. It is arranged at a lower position. The lashing rail transport vehicle 10 has a handle 48 provided on the upper part of the chassis main body 20. Further, horizontal pieces 50a and 52a that removably engage with grooves Wa on both sides of the object to be transported W placed on the forks 50 and 52 on opposite sides of the pair of forks 50 and 52, respectively. (Entrance part) is projected.

  As a result, after the object to be transported W is placed on the forks 50 and 52, when the handle 48 is pulled backward by hand and the footrest 40 is pressed downward with the foot, the forks 50 and 52 on which the object to be transported W is placed are loaded. As a result, the rear end of the vehicle is inclined rearward and the second wheel contacts the ground. In this rearward tilting state, the object to be transported W can be held on the forks 50 and 52 by the wheel 23 and the wheel 60. Thereafter, if the lashing rail transport vehicle 10 is manually pushed in the rearward tilted state, the transported object W on the forks 50 and 52 can be transported easily. Further, the state in which the tip of the fork is easily inclined obliquely upward can be stably transported. In addition, after the transported object W is transported, the handle 48 is pushed forward by hand to bring the fork from the rearward tilted state to the horizontal state, and then the transported object W is lowered from the forks 50 and 52. .

  In this way, when the footrest 40 is pressed with the foot and the handle 48 is operated by hand, it takes no time to place the object to be transported, and the fork tip is easily inclined obliquely upward. Can be transported stably.

  (2) When the handle 48 provided in the upper part of the chassis main body 20 is a first handle, the lashing rail transport vehicle 10 of the present embodiment has a second handle as a second handle at the center in the vertical direction of the chassis body 20. An insertion adjusting bar 38 is provided. Therefore, according to the present embodiment, the operator holds the insertion adjusting bar 38 (second handle) positioned at a position lower than the handle 48 (first handle) with the hand in the groove Wa of the article W to be transported. When inserting the horizontal pieces 50a, 52a of the forks 50, 52, the vertical position adjustment can be easily performed.

(3) The lashing rail transport vehicle 10 of the present embodiment includes a fall prevention member 80 that prevents the chassis body 20 from falling when in the first state.
As a result, according to the present embodiment, in the first state, the lashing rail transport vehicle 10 can be prevented from falling by the fall preventing member.

  (4) The fall prevention member 80 of the present embodiment is provided so as to be movable between the first position and the second position. Further, the chassis main body 20 includes a cylindrical portion 72 (holding portion) of the holder 70 that holds the fall prevention member 80 at the first position and the second position, respectively.

  When the first position is in the horizontal state (first state), the fall prevention member 80 comes into contact with the ground Z where the wheel 23 (first wheel) contacts the ground to hold the forks 50 and 52 in the horizontal state. The position to be. The second position is a position where the fall prevention member 80 is separated from the ground Z to which the wheel 23 (first wheel) contacts and the wheel 60 (second wheel) allows contact with the ground Z to contact. In this case, the position is such that the rearward tilt state (second state) can be taken.

  As a result, according to the present embodiment, the fall-preventing member 80 is selectively positioned at the first position and the second position, and is held by the cylindrical portion 72 (holding portion) of the holder 70, thereby securing the lashing rail. The vehicle 10 can easily acquire the first state and the second state.

In addition, you may change this embodiment as follows.
In the above-described embodiment, the latching grooves 74 and 75 are provided on the upper and lower end surfaces of the cylindrical portion 72 as the holding portion, and the pair of locking pins 86 and 88 are provided on the fall prevention member 80.

Instead of this, a longitudinal groove extending downward from the upper end surface of the cylindrical portion 72 may be provided, and a pair of transverse grooves perpendicular to the vertical direction may be provided at the intermediate portion and the lower end of the longitudinal groove.
In this case, the fall prevention member 80 is provided with a single locking pin that can be engaged with the vertical groove and the horizontal groove. And a case where a locking pin is located in a lower horizontal groove among a pair of horizontal grooves is defined as a first position of the fall prevention member 80, and a case where it is positioned in an upper horizontal groove is defined as a second position.

  Further, instead of the above configuration, a vertical groove extending upward from the lower end surface of the cylindrical portion 72 may be provided, and a pair of horizontal grooves perpendicular to the vertical direction may be provided at the middle portion and the upper end of the vertical groove, respectively. Good. In this case, the fall prevention member 80 is provided with a single locking pin that can be engaged with the vertical groove and the horizontal groove. And a case where a locking pin is located in a lower horizontal groove among a pair of horizontal grooves is defined as a first position of the fall prevention member 80, and a case where it is positioned in an upper horizontal groove is defined as a second position.

-In the said embodiment, although the to-be-conveyed object W was made into the long plate shape, it is good also as a block shape. In this case, the groove | channel Wa shall be provided in both sides.
In the above-described embodiment, the fall prevention member 80 prevents the fall for preventing the forks 50 and 52 from holding the horizontal state. In place of this, the fork 50, 52 may be prevented from falling by the fall preventing member 80 when the forks 50, 52 are in the forward tilt posture state.

  In the embodiment, the hand cart is embodied as the lashing rail cart 10. However, the present invention is not limited to the lashing rail transport vehicle 10 and may be embodied as a hand truck used for transporting objects other than the lashing rail.

10 ... lashing rail carrier (handcart) 20 ... chassis body,
22 ... Base member, 23 ... Wheel (first wheel), 24 ... Front wall,
26 ... lower wall, 28 ... pedestal, 30 ... frame,
32, 34 ... pillar part, 36, 37 ... bridging part,
38 ... Insertion adjustment bar, 40 ... Foot rest, 40a ... Rear end,
40b ... front end part, 40c ... middle part,
44 ... guide member, 46 ... insertion hole, 48 ... handle,
50 ... Fork, 50a ... Horizontal piece, 50b ... Vertical piece, 52 ... Fork,
60 ... Wheel (second wheel), 70 ... Holder, 72 ... Tube part,
74, 75 ... retaining groove,
80 ... a fall prevention member, 82 ... a grip part,
86, 88 ... locking pin, Z ... ground, W ... transported object.

Claims (2)

A chassis body having a first wheel at the bottom;
A pair of forks protruding in one direction with respect to the chassis body;
A footrest that is supported by the chassis body and protrudes in a direction opposite to the protruding direction of the fork;
The footrest is provided on the footrest and is disposed at a position higher than the first wheel in the first state in which the fork is directed horizontally or obliquely downward, and the footrest is disposed so that the tip of the fork faces obliquely upward. In the second state where the stand is inclined, the second wheel disposed at a position lower than the height in the first state;
A handle provided on the upper portion of the chassis body,
Engaging portions that removably engage with the grooves of the object to be transported placed on the forks protrude from the opposing side surfaces of the pair of forks ,
A fall-preventing member for preventing the fall when the chassis body takes the first state;
The chassis main body has a holding portion for holding the fall-preventing member movably between two positions, a first position and a second position,
The first position is a position for holding the fork in the first state by the fall-preventing member abutting against the ground on which the first wheel contacts the ground.
The second position is a position where the fall prevention member is separated from the ground and the second wheel is allowed to contact the ground to be grounded, and can be held in the second state. A handcart that is in position . When the handle provided at the upper part of the chassis body is the first handle,
The hand cart according to claim 1, wherein a second handle is provided at a central portion in the vertical direction of the chassis main body .