JP2005112612A - Simple lifter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a worker to load a cargo on a load-carrying platform without lifting the cargo by a hand to reduce worker's physical burden. <P>SOLUTION: This simple lifter is composed of a lift body constituted by a frame, a load-carrying platform receiver, and an elevating device and the load-carrying platform constituted by machining like a hollow box being hollow on an upper face and a front face, bending left and right side faces and an innermost face downward on an outer side into an L-shape, and providing a channel at the center of the innermost face. A bottom face of the load-carrying platform lowers down to the ground surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a simple lifter for lifting a load.

A conventional simple lifter has a loading platform placed on a carriage as in the invention of Patent Document 1, and when the cargo is loaded and moved to the destination, and then lowered to a high position, the loading platform is raised. I was lifting my luggage.
Japanese Patent Laid-Open No. 07-025594

  However, in the case of the conventional simple lifter, since the loading platform can be lowered only to the position of the carriage, when loading the load on the loading platform, the loading had to be lifted up to the height of the loading platform by hand.

  Therefore, the present invention has an object of reducing the physical burden on the operator by allowing the load to be placed on the loading platform even if the load is hardly lifted by hand.

  In order to solve the above-mentioned problems, the present invention is processed into a hollow box shape having an upper surface and a front surface, and the left and right side surfaces and the back surface are bent into an L shape outward and downward, and a groove is formed in the center of the back surface. The simple lifter has a structure in which the bottom of the cargo bed is lowered to the ground.

  Since this invention is the above structure, the following effects are acquired. First, it is easy to load and unload a load because the load can be loaded on the loading platform with almost no hand lift.

  Secondly, the time required for loading and unloading the luggage can be shortened, so that the work flows smoothly, so that the work is expected to be efficient as a whole.

  It is intended for lifting a load that is large enough to be placed on the carrier and heavy enough to be supported by the carrier.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view of the simple lifter according to the present invention in a state where the loading platform is lowered to the lowest position. The simple lifter 1 according to the present invention includes a lift main body 1a, a frame 1b, a cargo bed receiver 1c, a lifting device 1d, and a cargo bed 2.

  The frame 1b includes a ground 9 having a left front wheel 5 on the front side, a left rear wheel 5b on the rear side, a left vertical frame 4 extending vertically from the rear of a horizontal lower left frame 4e, a right front wheel 5a on the front side, and a rear side. The right rear wheel 5c is attached to the ground 9 and the right vertical frame 4a extending vertically from the rear of the horizontal lower right frame 4f. The upper horizontal frame 4b is the upper side, the middle horizontal frame 4c is the middle, and the lower horizontal frame 4d is The lower side is connected.

  The cargo bed receiver 1c is bent at a right angle so as to fit the left vertical frame 4 and the lower left frame 4e and has a L-shaped portion, and a right angle so as to fit the right vertical frame 4a and the lower right frame 4f. The right carrier carrier 3a having a bent L-shaped portion is connected to the bent carrier carrier 3b at the bent portion, and the upper side is fixed through the lateral fixture 3c, and placed on the upper front side of the frame 1b.

  The lifting / lowering device 1d includes an operation lever 6, a switching lever 7, a cylinder 8 and a pulley 8b, and a chain 8c extending from the pulley 8b is connected to the cargo bed receiver 1c. By pulling the chain 8c, the platform support 1c is lifted.

  The lift main body 1a is a part of the simple lifter 1 excluding the frame 1b, the loading platform receiver 1c, and the loading platform 2 including the lifting device 1d. The loading platform 2 can be removed from the simple lifter 1 and replaced.

  The loading platform 2 is a place on which the luggage 10 is placed, and is processed so as to be caught by the left loading platform receiver 3, the right loading platform receiver 3a, and the back loading platform receiver 3b. The loading platform 2 is recessed downward so as to be sandwiched between the lower left frame 4e, the lower right frame 4f, and the lower horizontal frame 4d, and is in contact with the ground 9 from the entrance to the back of the portion on which the load 10 is placed.

  FIG. 2 is a front view of the simple lifter according to the present invention with the loading platform raised. A state in which the lifting platform 1d of the simple lifter 1 is operated to lift the loading platform receiver 1c on which the loading platform 2 is placed is shown.

  When the elevating device 1d is operated, the cargo bed receiver 1c connected by the chain 8c is pulled upward, and the cargo bed 2 hung on the cargo bed receiver 1c moves together, whereby the luggage 10 placed on the cargo bed 2 is lifted.

  When the operation lever 6 is operated with the switching lever 7 raised, the pipe 8a extends from the cylinder 8 and the pulley 8b moves upward. The pulley 8b has a gear shape and is hung with a chain 8c. Since the chain 8c is fixed on the back side, when the pulley 8b is raised, the loading platform receiver 1c connected on the front side is pulled up.

  When the switching lever 7 is moved downward, the loading platform 2 is gradually lowered. If you want to stop the descent, you can move it up again. During the lowering, the operation lever 6 is ineffective, and even if the operation is performed, the loading platform 2 cannot be raised or the height cannot be maintained.

  FIG. 3 is a side view of a simple lifter according to the present invention. It is the figure which looked at the simple lifter 1 of FIG. 2 from the side, and the loading platform 2 is in the raised state.

  The left fixing tool 3d and the right fixing tool 3e are attached to the back side of the left and right cargo bed receivers 3 and 3a, and the horizontal fixing tools 3c are penetrated and connected to the left and right cargo bed receivers 3a and 3a. The left load carrier receiver 3 and the right load carrier receiver 3a are fixed.

  The left vertical frame 4 and the right vertical frame 4a are rail-shaped, and the left fixture 3d and the right fixture 3e are fitted therein. When the loading platform 2 moves up and down, the left fixture 3d and the right fixture 3e move along the left vertical frame 4 and the right vertical frame 4a.

  On the back side of the frame 1b, a left rear frame 4g is attached in parallel to the left vertical frame 4, and a right rear frame 4h is attached in parallel to the right vertical frame 4a. The lower side is a left rear wheel 5b and a right rear wheel 5c, respectively. It is connected. When moving the simple lifter 1, the left rear frame 4g and the right rear frame 4h are pushed by hand.

  The left rear wheel 5b and the right rear wheel 5c can be rotated at the upper connection portion, and the traveling direction can be changed. Moreover, since the wheel stop is also provided, it is also possible to fix so that it may not move.

  FIG. 4 is a rear view of the simple lifter according to the present invention. It is the figure which looked at the simple lifter 1 of FIG. 2 from back.

  There is a loading platform 2 on which the luggage 10 is placed at the back, and a loading platform receiver 1c on which the loading platform 2 is hung, followed by a frame 1b. In the frame 1b, the left and right lower frames 4e and 4f below the loading platform receiver 1c are the farthest, and the left and right vertical frames 4, 4a and the upper and lower horizontal frames 4b and 4d are behind the loading platform receiver 1c.

  In the center of the lower horizontal frame 4d, there is a base 6i, and an operation lever 6, a switching lever 7, and a cylinder 8 are installed. The cylinder 8 is located at the same position as the left and right vertical frames 4 and 4a, and the back sides of the left and right vertical frames 4 and 4a and the cylinder 8 are pressed by the middle and horizontal frame 4c. The operation lever 6 and the switching lever 7 come outside the middle horizontal frame 4c.

  The left rear frame 4g and the right rear frame 4h extending downward from the upper side of the left vertical frame 4 and the right vertical frame 4a are on the front side, and the left rear wheel 5b is below the left rear frame 4g and the right rear frame 4h. And the right rear wheel 5c is connected.

  FIG. 5 is a front view of the lift from which the loading platform of the simple lifter according to the present invention is removed. The lift main body 1 a is a portion obtained by removing the loading platform 2 from the simple lifter 1. The state which removed the loading platform 2 from the front view of FIG. 1 is shown.

  The space surrounded by the left and right cargo bed receivers 3 and 3a and the back cargo bed receiver 3b of the loading platform receiver 1c and the space surrounded by the left and right lower frames 4e and 4f and the lower horizontal frame 4d of the frame 1b are vacated because the loading platform 2 is accommodated. ing.

  Since the loading platform receiver 1c is in the lowest position, the left loading platform receiver 3 is positioned on the lower left frame 4e, and the right loading platform receiver 3a is positioned on the lower right frame 4f. The loading platform receiver 1c goes up by being pulled by a chain 8c connected to the center of the upper surface of the back loading platform receiver 3b.

  Since the frame 1b has four wheels, a left front wheel 5, a right front wheel 5a, a left rear wheel 5b, and a right rear wheel 5c, it moves by pushing the upper horizontal frame 4b etc. by hand like a carriage. It is possible to do.

  FIG. 6 is a perspective view of the loading platform of the simple lifter according to the present invention. The loading platform 2 includes a portion for placing the luggage 10 and a portion for hanging the loading platform 2 on the loading platform receiver 1c. A portion for placing the load 10 is composed of a bottom surface 2a, a left side surface 2b, a right side surface 2c, and a back surface 2d, and a portion to be hung on the load platform receiver 1c is composed of a left load platform mount 2e, a right load platform mount 2f, and a back load platform mount 2g.

  The loading platform 2 is formed by bending a metal such as iron. The part of the loading platform 2 on which the luggage 10 is placed has a shape such that the upper and front sides of the hollow box are opened, and the vertical cross-sectional shape is a U-shape. The luggage 10 is put on the loading platform 2 by allowing the luggage 10 to enter from the front.

  The bottom surface 2a of the loading platform 2 is recessed so that the back surface of the bottom surface 2a contacts the ground so that the loading platform 2 is at the same height as the ground 9 when the loading platform 2 is lowered to the bottom. This is to make it possible to easily place the load 10 on the upper surface of the bottom surface 2a of the loading platform 2 with almost no lifting of the load 10 in order to obtain such a structure.

  Since the loading platform 2 is sized to fit within a portion surrounded by the left loading platform receiver 3, the right loading platform receiver 3a, and the back loading platform receiver 3b, the widths of the bottom surface 2a and the rear surface 2d are set to the left loading platform receiver 3 and the right loading platform receiver 3a. The depths of the bottom surface 2a, the left side surface 2b, and the right side surface 2c are about the length of the left and right cargo bed supports 3, 3a.

  The height of the left side surface 2b and the right side surface 2c is the same as the height from the ground surface 9 to the upper surface of the left cargo bed receiver 3 or the right cargo bed receiver 3a. The height of the back surface 2d is the same as the height from the ground surface 9 to the top surface of the backpack support 3b.

  The part of the loading platform 2 that hangs on the loading platform receiver 1c is the portion that hangs on the left loading platform receiver 3, the right loading platform receiver 3a, and the back loading platform receiver 3b, and the left side surface 2b, the right side surface 2c, and the rear surface 2d are L-shaped outward and downward. It is bent and processed.

  The left and right cargo bed supports 2e and 2f are bent at a position slightly larger than the width of the left and right cargo bed supports 3 and 3a, and are placed on the left and right cargo bed supports 3 and 3a.

  Similarly, the back carrier rack 2g is bent at a position slightly larger than the width of the back carrier holder 3b. However, since there is a portion connecting the chain 8c for lifting the carrier 2 around the center of the back carrier holder 3b, a U-shaped The groove 2h is opened.

  Since it is hung not only on the left and right cargo bed handles 2e and 2f but also by the back cargo bed rack 2g, the cargo bed 2 can be securely attached to and detached from the simple lifter 1 without the cargo bed 2 being pulled forward. It is attached.

  FIG. 7 is a side view showing a state in which the load of the simple lifter according to the present invention is placed. This figure shows the load carrier 2 of the simple lifter 1 as a center, and shows a situation where a load 10 placed on the ground 9 is placed.

  Since the simple lifter 1 can be moved by the left and right front wheels 5, 5 a and the left and right rear wheels 5 b, 5 c, the simple lifter 1 is moved to the front of the luggage 10. The loading platform receiver 1c is lowered to the lowest position so that the bottom surface 2a of the loading platform 2 hung on the loading platform support 1c is attached to the ground surface 9.

  Since there is almost no height to lift the luggage 10 on the loading platform 2, the luggage 10 can be placed on the loading platform 2 by moving the luggage 10 horizontally 11 and entering from the entrance of the loading platform 2.

  Since it is only necessary to move the baggage 10 horizontally, such as pushing and pulling, without lifting the baggage 10 upward, it is considered that the burden is less than lifting the baggage 10 by hand, and the working time can be shortened.

  The same applies to the case where the luggage 10 is lowered to the ground 9, and only the horizontal movement 11 is required. If the loading platform 2 is high, the luggage 10 falls, so it must be taken down by hand, which increases the burden on the person.

  FIG. 8 is a perspective view showing a state in which the load of the simple lifter according to the present invention is placed. This shows a situation in which the loading platform 2 of the simple lifter 1 is lowered to the lowest position and the luggage 10 is moved horizontally 11 to the loading platform 2.

  The luggage 10 is left on the ground 9 and the simple lifter 1 is moved to the front of the luggage 10. Since the simple lifter 1 has left and right front wheels 5 and 5a and left and right rear wheels 5b and 5c, it can be driven by pushing the left and right rear frames 4g and 4h, and the direction can be changed by the left and right rear wheels 5b and 5c. is there.

  In order to avoid the platform 2 from hitting the ground 9 during the movement, the platform 2 is slightly raised and moved to the front of the package 10, and then the switching lever 7 is turned downward to lower the platform 2 to the lowest position. The bottom surface 2 a of the loading platform 2 is in contact with the ground 9.

  If the load 10 is light, it can be carried by hand without using the simple lifter 1, but if the load 10 is heavy, it may not be easy to lift even a slight height. If it is only shifted to the side, less labor is required compared to lifting, so if it is moved horizontally 11 to the loading platform 2 having the same height as the ground 9, it can be placed on the simple lifter 1.

  Since the simple lifter 1 is a machine for lifting the load 10, it is desired to leave it to the machine as much as possible to lift it slightly for placing it on the loading platform 2. It is considered that the work efficiency can be improved by reducing the effort put on the loading platform 2.

  FIG. 9 is a perspective view showing a state of lifting the load of the simple lifter according to the present invention. This shows a situation in which the load 10 is lifted up after the load 10 is placed on the load platform 2 of the simple lifter 1 and the load 10 is lifted up.

  When the load 10 has been placed on the loading platform 2, the switch lever 7 is fully turned in the upward direction, and the operation lever 6 is moved back and forth to operate the lifting 11. Every time the operation lever 6 is tilted backward, the operation lever 6 is raised at regular intervals, so that the operation is repeated until the desired height is reached.

  When the operation lever 6 is operated, power is applied to the cylinder 8 from the pump 6a below the operation lever 6, the pulley 8b is lifted by extending the pipe 8a upward from the cylinder 8, and the chain 8c hung on the pulley 8b is loaded onto the loading platform. The receiver 1c is lifted 11a.

  The loading platform receiver 1c on which the loading platform 2 is hung is fitted into the rail-shaped portions of the left and right vertical frames 4 and 4a by the left and right fixing tools 3d and 3e, and the loading platform support 1c is vertically moved along the left and right vertical frames 4 and 4a. Move.

  When the loading platform 2 is raised too much, the loading platform 2 can be lowered little by little by loosening the switching lever 7 in the downward direction. When the height to be lowered and the bottom surface 2a of the loading platform 2 substantially match, the luggage 10 may be moved horizontally 11 and pushed out of the loading platform 2.

  Since the loading platform 2 is removable from the loading platform receiver 1c, it can be replaced if the loading platform 2 is damaged. Further, it is considered that there is applicability such as processing the loading platform 2 according to the shape of the luggage 10 or the like.

  FIG. 10 is a side view of the operation lever of the simple lifter according to the present invention. The operation lever 6 is a device for performing the operation of lifting the loading platform 2 on the base 6 i on the back side of the simple lifter 1. In addition, a switching lever 7 and a cylinder 8 are installed on the base 6i, but only the lower part of the operation lever 6 and the cylinder 8 is displayed.

  The operation lever 6 has a grip 6d at the upper end, and is operated by holding the grip 6d with a hand and moving it back and forth. Further, a fulcrum 6e is provided at the lower end, and the lower side of the fulcrum 6e is a pump 6a. At the fulcrum 6e, the lateral side is fixed to the cylinder 8 by a fixing bracket 6f.

  Before the operation 6b, the operation lever 6 is in a substantially vertical state. The operation time 6c is a state in which an operation 6g for tilting the operation lever 6 downward is performed from the state before the operation 6b. The operation 6g generates a force 6h that pushes downward from the fulcrum 6e, and the pump 6a is compressed.

  The force 6h applied to the pump 6a is transmitted to the cylinder 8 through the base 6i and extends the pipe 8a upward. By extending the pipe 8a, the pulley 8b on the upper side moves upward and lifts the loading platform 2.

  When the operation lever 6 is returned from the operation time 6c to the pre-operation 6b, the pump 6a simply returns to the original position, and the pipe 8a above the cylinder 8 does not go down. By repeating the operation, the pipe 8a can be gradually raised.

  When the operation by the operation lever 6 is performed several times, the height of the loading platform 2 reaches the highest position that can be raised in the simple lifter 1, and does not go up even if the operation is further performed. . When lowering, the switching lever 7 is used.

  FIG. 11 is a front view of the switching lever of the simple lifter according to the present invention. Similarly to the operation lever 6, the switching lever 7 is a device on the base 6 i on the back side of the simple lifter 1 and switches the operation of the loading platform 2.

  The front surface 7a shows the device on the base 6i as viewed from the back surface of the simple lifter 1, and the upper part of the operation lever 6 and the upper part of the cylinder 8 are not shown. The plane 7b is a view of only the switching lever 7 from above.

  The switching lever 7 has a handle 7c at the upper end, and switches the operation by turning left and right. The lower end is connected to the base 6i by a stopper 7e, and is fixed to the cylinder 8 by a support plate 7d in the middle of the switching lever 7.

  When the loading platform 2 is raised, the handle 7c is rotated clockwise 7f to the full and the operation lever 6 is operated. When the handle 7c is on the ascending side, once the loading platform 2 rises, it does not go down.

  When the handle 7c is gradually rotated counterclockwise 7g from the ascending side to the descending side, the loading platform 2 starts to descend. When the handle 7c is rotated to the left 7g to the full extent, the descending speed of the loading platform 2 is maximized and descends to the bottom in a few seconds.

  While the loading platform 2 is descending, it cannot be raised or maintained in height even if the operation lever 6 is operated. When it is desired to stop the loading platform 2 while descending, the handle 7c may be rotated to the right 7f. The loading platform 2 is adjusted to an appropriate height by ascending and descending operations.

  FIG. 12 is a side view of the lifting device for the simple lifter according to the present invention. The situation is shown in which power is applied to the cylinder 8 by operating the operation lever 6 and the switching lever 7 to lift the loading platform 2.

  The base 6i is provided with an operation lever 6, a switching lever 7, and a cylinder 8. A pipe 8 a protrudes from the upper surface of the cylinder 8. A pulley 8 b is fixed on the upper side of the pipe 8 a, and the pipe 8 a rises as it comes out of the cylinder 8, and the pipe 8 a descends when it returns to the inside of the cylinder 8.

  A chain 8c is hung on the pulley 8b. Since the pulley 8b has a gear shape and meshes with the chain 8c, the pulley 8b can be prevented from spinning around and the chain 8c from extending.

  One end of the chain 8c hung on the pulley 8b is connected to the cargo bed receiver 1c, and the other end is fixed to the middle horizontal frame 4c. Since the middle horizontal frame 4c is fixed, when the pulley 8b is lifted 11b, the carrier support 1c is lifted 11a.

  The vertical movement of the pipe 8a is realized by the pressure of the gas or liquid in the cylinder 8 or the like. When the operation lever 6 is operated, pressure is applied from the pump 6a to the cylinder 8 and the pipe 8a goes up. Further, when the switching lever 7 is loosened, the pressure is weakened and the pipe 8a is lowered.

  The increase in pressure is performed by a certain amount by operation. On the other hand, the pressure is gradually reduced so that the loading platform 2 does not drop suddenly. By making the fall gentle, it is easy to finely adjust the height of the loading platform 2.

  FIG. 13 is a side view of a conventional simple lifter. A conventional simple lifter 12 is provided with a loading platform 13 on a carriage, and the simple lifter 1 according to the present invention is substantially the same except for the loading platform 2.

  The carriage includes a lower frame 13c, a side frame 13f, and a rear frame 13g, and is movable by a front wheel 13d and a rear wheel 13e provided on the lower frame 13c or the rear frame 13g. The movement can be performed by pushing the handle 13i, and the direction can be changed by turning the rear wheel 13e.

  On the lower frame 13c, there is a loading platform receiver 13a connected to the side frame 13f, and the loading platform 13 is placed thereon. The loading platform receiver 13a can be moved up and down by the slider 13b moving along the side frame 13f. The slider 13b is operated by the lever 13h.

  Since the loading platform 13 can be lowered only above the lower frame 13c, it is necessary to lift it by hand when loading the load 10. However, lifting by hand puts a burden on a person's waist, and also in terms of time. There is a drawback that it takes time.

It is a front view of the state which lowered the loading platform of the simple lifter which is the present invention to the lowest. It is a front view of the state which raised the loading platform of the simple lifter which is this invention. It is a side view of the simple lifter which is this invention. It is a rear view of the simple lifter which is this invention. It is a front view of the lift which removed the loading platform of the simple lifter which is this invention. It is a perspective view of the loading platform of the simple lifter which is this invention. It is the side view which showed a mode that the load of the simple lifter which is this invention was mounted. It is the perspective view which showed a mode that the load of the simple lifter which is this invention was mounted. It is the perspective view which showed a mode that the load of the simple lifter which is this invention was lifted. It is a side view of the operation lever of the simple lifter which is this invention. It is a front view of the switching lever of the simple lifter which is the present invention. It is a side view of the raising / lowering device of the simple lifter which is this invention. It is a side view of the conventional simple lifter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Simple lifter 1a Lift main body 1b Frame 1c Loading platform receiver 1d Lifting device 2 Loading platform 2a Bottom surface 2b Left side surface 2c Right side surface 2d Back surface 2e Left loading platform hanging 2f Right loading platform loading 2g Back loading platform loading 2h Groove 3 Left loading platform receiving 3a Right loading platform receiving 3b Back carrier 3c Horizontal fixture 3d Left fixture 3e Right fixture 4 Left vertical frame 4a Right vertical frame 4b Upper horizontal frame 4c Middle horizontal frame 4d Lower horizontal frame 4e Lower left frame 4f Lower right frame 4g Left rear frame 4h Right rear frame 5 left front wheel 5a right front wheel 5b left rear wheel 5c right rear wheel 6 operation lever 6a pump 6b before operation 6c during operation 6d grip 6e fulcrum 6f fixing bracket 6g operation 6h force 6i base 7 switching lever 7a front surface 7b support plate 7c handle 7c 7e plug 7f right turn 7g left turn 8 cylinder 8 Pipe 8b pulleys 8c chain 9 ground 10 baggage 11 horizontally moves 11a pulled 11b lift 12 simple lifter 13 bed 13a bed undergoing 13b slider 13c lower frame 13d front wheel 13e rear wheel 13f side frame 13g rear frame 13h lever 13i handle

Claims (2)

  With the horizontal part of the two L-shaped plates facing forward, fix the upper, middle, and lower parts of the vertical part with the horizontal plate and bend down to the upper back side of the L-shaped plate. A frame having wheels attached to the front of the horizontal portion of the L-shaped plate and the lower portion of the inverted L-shaped plate, and L-shaped plates at both ends of the horizontally oriented plate. With the horizontal part of the plate facing forward, the rear side is connected, and another horizontal plate is fixed in the middle of the vertical part of the L-shaped plate. An operation lever that sends power from the pump by tilting it down, a switching lever that rotates left and right to switch operation, and a cylinder that moves the pulley attached to the top up and down by operating in combination with the operation lever and the switching lever, Attached to the frame and connected to the carrier holder, the carrier holder is raised. Simple lifter, wherein the lift body of the lifting device for, in that it consists of a loading platform which rests on the loading platform receiving. It is processed into a hollow box shape with an upper surface and a front surface, the left and right side surfaces and the back surface are bent into an L shape outwardly and downwardly, and the bottom surface of the load platform is lowered to the ground with a loading platform provided with a groove in the center of the back surface. The simple lifter according to claim 1.

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