JP2005041461A - Escalator cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cart whereby a load-carrying platform can be automatically maintained in an almost horizontal state regardless of weight or a position of a cargo in an escalator without any operation at the time of advancing or retreating to or from an escalator. <P>SOLUTION: The cart has a device for stopping in the escalator and a device for maintaining the load-carrying platform in the almost horizontal state. The shape of the ground under the vehicle body protrudes in a form of steps in the escalator, and the variation of the shape of the ground is converted to the force for pulling up a lower end of the load-carrying platform. The shape of the escalator protruded on an upper part and recessed on a lower part is used for dropping the load-carrying platform at an entrance and picking it up in an exit. The load-carrying platform is folded at a vehicle center part and the load-carrying platform is grounded, and a gradient of a front half part of the folded vehicle is gentler than a gradient of the steps. The load-carrying platform is always maintained to be parallel to the ground by the principles of a parallelogram, and deformable parallelogram as a defect can be turned to be the parallelogram capable of preventing from getting out of shape by fixing one of interior angles, and thereby even the load-carrying platform exclusive for rising can be used for the one exclusive for lowering by changing the direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

When a cart is placed on an escalator and the cargo is transported to the upper floor, the cart wheel that has entered the escalator is fixed without falling from the loaded tread to the lower tread, maintaining the level of the loading platform and spilling the cargo from the loading platform. If there is no danger and the vehicle is able to travel when entering and exiting, the escalator can move without distinction from flat ground. The current escalator cart is fixed to the escalator in the escalator, but the loading platform is inclined. Therefore, when the cart enters the escalator, it is necessary to inspect the cargo by the staff and to give the user prior education and guidance. The escalator cart of the present invention solves these conditions without relying not only on the power but also the help of counterweights and springs, and without any operation. The loading platform is the position of the weight of the luggage and the position where the luggage is placed. Regardless of the level is automatically maintained. The cart of the present invention is free to move to the upper floor and is three-dimensional barrier-free, and this effect is not only the omission of an attendant, but also great.
If only the cart is fixed in the escalator, it is only necessary to add the brake shown in FIG. 11 in which the wheel is braked by the inclination of the cart to the cart of the operation shown in FIG. 9 and FIG. If the inter-vehicle distance is set to the non-slip length, it is possible that the upper wheel lower wheel will settle down to the position where it will slide down at the same time, and if this state is avoided, either of the upper wheel lower wheel will not slide down Stable in position. That is, the vehicle body is fixed inside the escalator unless the inter-vehicle distance is set to the non-slip length. Also, it is most stable immediately after sliding down, so if you fix the cart immediately after sliding down, the wheels once dropped will not fall again. The fall of the wheel occurs at a time of a gentle slope near the entrance of the escalator and is fixed at the same time as entering the escalator and does not fall in the middle.
Claims 1, 2, 3, and 4 carts have been devised for maintaining the level of the loading platform, and there are differences in the ability of each method, and the level of the loading platform in the escalator and the total length of the loading platform that can be leveled There is a difference. The level of the platform and the total length of the platform that can be leveled may not be very important depending on the application, and airport carts should not be placed on the escalator, so the level and total length of the platform should not fall. However, in the case of a shopping cart in which a baggage is placed in a basket, there is no worry of spillage, and the center of gravity of the baggage is high, so the main purpose is to prevent falling than holding horizontally. In the case of a shopping cart, the car is loaded through the column to the center of the cart, and the position where the load is applied is constant, so that the rotary movement around the column of the column and cart that holds the column vertically moves up and down the platform. It does not require a large amount of work like an escalator cart that strives to maintain the level. Since an airport cart needs to have a low and wide loading platform, it is required to rotate the loading platform over the entire length of the vehicle body instead of the support column supporting the loading platform at the center of the vehicle body as in a shopping cart. In the case of a wheelchair cart, the load position needs to be constant and a low floor, so even if the level of the loading platform becomes a problem, the size of the loading platform does not matter. There are also ascending specifications, descending specifications, and ascending / descending specifications. Rather than considering an ascending / descending cart, if the handle is attached to the opposite side, the ascending exclusive will be transformed into the exclusive descending.
As described in detail in FIG. 18, when the handle is attached to the opposite side, the height of the protrusion attached to the handle changes, and the specification is distinguished by a groove formed in the gate of the entrance.
The distance between each part of the vehicle body and the ground with respect to the flat ground changes in the escalator, and this change can be used to push up the vehicle body. The systems detailed in FIGS. 1, 2, and 3 are devised for the ground behind the vehicle body, the ground just below the center of the vehicle body, and the ground in front of the vehicle body. The getter and lever rotate as the step is raised, but the method of directly connecting the getter and lever to the loading platform with a connecting rod or the like has a small lift and tends to cause the wheel to rise without raising the loading platform. The method of pushing up the loading platform by the principle of wedge by transmitting the rotation of getter and lever to the reciprocating motion of wedge will improve this.
When pulling up one side of the carriage, applying a load directly above the rear wheel and lifting the front wheel side requires no force at all, but if the load is moved forward from the center, force is required to lift the front wheel side. Can be converted to work to lift the loading platform. As the load approaches the front wheel side, the lift until the platform is leveled more than the work applied from the outside to the carriage becomes smaller. Since the center of gravity of the load is as close to the front wheel as possible, the load platform is preferably a trapezoidal cross section with a long upper side and a short bottom as shown in FIG.
The pallet whose escalator has pushed up the lower end during entry is lowered and restored by its own weight when escaping, but the pallet that has fallen from the vehicle body during entry as shown in FIG. 4 must be restored by being pushed up by the escalator when escaping. In order to prevent the platform from lowering when running flat, the necessary contact must be a switch that turns on and off when entering and exiting. This on / off switch operates when no load is applied to the hit. The angle between the escalator and the floor is greater than 180 degrees at the top of the escalator, and the angle between the escalator and the floor is below 180 degrees at the bottom of the escalator. It reacts when it is small.
Since the parallelogram of the pantograph cart shown in FIG. 5 is freely deformed, it is necessary to make the pantograph a parallelogram that is parallel to the tread surface of the escalator and does not collapse. This is solved by causing the load of the load to act in the opposite direction to the direction in which the shape collapses.
There is no problem with the rear wheel moving to the next step at the ascending and descending exits, but the front wheel falling to the lower stage has a large drop and gives an impact to the loading platform. Also, in order for each cart to perform its function, it is necessary to fix the cart in the final position immediately after entering the escalator. 12, 13, and 14 are forcibly moving the vehicle body with a semi-circular wheel having an arc with a scallop or spiral curve.

Is a shopping cart in which the rotational movement of the getter is changed to the reciprocating movement of the wedge to push up the loading platform according to the wedge principle, (a) shows a state of flat running, and the getter runs without grounding. F1 follows the inclination of the cart to prevent the fall of the getter, and the guide roller attached thereto slides on the step to remove the getter. The guide rollers R1 and R2 bounce at the exit when they are pressed against the step storage opening, push up the front wheel and rear wheel getters, respectively, and reinsert F1 to prevent getters from falling off. (B) shows that the wedge (F2) having three guide rollers is inserted into the gap between the bottom of the cargo bed and the upper surface of the italic body and the cargo bed is brought down to the upper part of the stairs when the lower getter jumps with the tilt of the cart. As the wedges move in the direction of pulling out, the upper getter is in a state of falling off and falling off. The wedges on both sides to be inserted and removed are connected by tie rods. When the force to be inserted is lost to the force to be inserted and the wheel is lifted, the wheel floats and the cargo bed does not rotate. This problem can be solved by reducing the taper angle. Since the lower wheel is close to the kick and the upper wheel is located far from the kick, the device shown in FIG. 14 is attached to the top of the cart, and the handle shown in FIG. 17 is attached to the rear. In the figure, the arrow → indicates the direction of movement. Arrow ⇒ indicates the direction of revolution. Is a cart that converts the rise of the step corner directly under the center of the loading platform to rotation of the lever and pushes up the lower side of the loading platform. Of the levers attached to both sides of the vehicle body, the upper lever does not work in the horizontal state when tilting, and the lower lever The lever touches the upper tread when tilting and pushes up the bottom of the loading platform. (A) shows the time of flat running, and the apparatus of FIG. 12 indicated by a broken line at the head of the vehicle body shows the role of moving the upper wheels closer to the kick and moving the lower wheels away from the kick. This device is not required on the handle side and is not required when descending. At the time of invasion, the lower wheel simply moves within the tread on which it rides and does not fall. Since the upper wheel is a position where the final position is in close contact with the kick, it will fall if it rides on a position away from the kick. When descending, the lower wheel that does not fall enters first, and the succeeding upper wheel drops a slight drop and smoothly settles to the final position. When ascending, the upper wheel that invades first may drop a high head and may drop to the subsequent lower wheel, and the upper wheel must be stopped on the spot at the same time as the fall. (B) shows a state in which the lever tip is pushed up to an intermediate step corner and pushes up the lower side of the loading platform. In this state, as shown in (c), the upper lever operates at the exit and rotates the loading platform in the opposite direction. This phenomenon does not occur at the climb. For the lever on the handle side, a device for attaching the device shown in FIG. 15 and disabling its function at the entrance is required. Is a cart exclusively for ascending where the hanger in front of the wheel and the back getter jump up and push up the rear part of the loading platform, and (a) shows a flat state. The front lever alone pushes up the rear of the loading platform even when the vehicle is horizontal at the entrance, and lowers the rear of the loading platform with the vehicle tilting at the exit. For this reason, the reciprocating motion of the guide roller connected to the front lever as shown in FIG. At the exit, as shown in (d), even if the front lever moves, the cargo bed does not go down. (C) is a state diagram of the cart inside the escalator. The guide roller that is connected to the front lever by the swaying lever in the center of the car body rotates and the connecting rod jumps up, pushes up the rear part of the cargo bed by the wedge effect, This guide roller is pushed up as a wedge reciprocation. Is a cart exclusively for ascending, where the loading platform is removed from the vehicle body at the ascending opening and restored at the exit. (A) is in a flat running state and is stopped by a hit, so the loading platform does not fall. (B) is the moment when the vehicle body is tilted, and (c) is the moment when the platform is dropped, and the contact and the receiver are turned upside down with the sliding surface of the panel hitting the step corner. (D) shows the posture of the cart inside the escalator, and (d) is a state where the hit is received, and the rear wheel is lower than the state of (c), so that the receiver is positioned under the tight hit of the vehicle body. Is a cart (F5) that can be folded down in the middle of the car body but not in the upper part. (A) is a flat running and has a hit, so the vehicle body does not break and the bottom does not land. In (b), the bottom of the vehicle body lands, the center of the vehicle body rises, and the vehicle body bends in two. As a result, the loading platform becomes more horizontal. When the upper wheel is in close contact with the kick and the lower wheel is retracted to near the non-slip of the stepped surface, the vehicle body inclination angle in the escalator is smaller than the stairs inclination angle, and the smaller the wheel, the longer the inter-vehicle distance is obtained. The inclination angle becomes smaller. As illustrated in FIG. 2, when the wheels straddle the upper and lower treads, if the wheel diameter is made as small as possible and the inter-vehicle distance is made as large as possible, the vehicle body gradient of the escalator cart can be made gentler than the staircase gradient. The front half of the broken car body will further loosen the car body gradient. Is an escalator cart (F6) that links the horizontal of the escalator's tread with the horizontal of the loading platform according to the principle of the parallelogram. Keep parallel and horizontal. The contact ABC, the contact EBF, the contact DE and the front wheel axle, the contact FG and the rear wheel axle, the contact DE and the hanger are in the same panel, and the length BE is shorter than the length BF. The angle EBF is a right angle. (A) is a flat running state and prevents the loading platform from falling at the hit and restrains the deformation of the parallelogram. (B) shows the change in the shape of the cart that has entered the escalator. The parallelogram BCFG is expanded and the parallelogram ABDE is contracted. The parallelogram BCFG tries to shrink and the parallelogram ABDE tries to expand by the load, but the board including the contact DE and the hanger is suspended from the upper step corner and resists this. Therefore, climbing is not performed with the inclined shape in the state of (a). Is used for wheelchair posture control that the wheel continues to fall without stopping when the radius of the wheel is larger than the length of the tread, and the chair is rotated with the force to stop the fall. (A) shows a state in which the sledge is suspended when traveling horizontally. Immediately after entering the escalator, the wheel at the tip of the outrigger retracts the wheel, and the notch of the sled bites into the non-slip portion. The suspension material has a center of rotation above the wheel, so that the bite goes to the depth of the notch and does not come off once it is engaged. (B) shows the state where the sled is fixed to the escalator and the wheel slides down to the lower stage, and (c) shows the state where the whole wheelchair rotates backward and stops in a horizontal state because the head of the wheelchair is connected to the sled. This wheelchair must always have its back facing upwards on the escalator. If you invade with your back facing the exit, the sled will bite into the non-slip area, but the entire wheelchair will rotate back and roll down to the lower floor. Since the wheel attached to the tip of the stored outrigger (F7) has no contact portion when intruding, it jumps out in the opposite direction to prevent the wheel from falling. In addition, if you invade with your feet facing up, you will not be able to enter because the tip of the sled gets in the way. Is a chained L-shaped vehicle body (F8) in which a four-wheeled vehicle is a unit, and a concave semicircular rail is suspended from the top of the L-shaped vehicle body. The cargo is kept level by the carriage that runs on the semicircular rail. There is a protrusion claw on the suspension part of this semicircular rail, and the wheel rotation is locked by pressing the wheel tire. The wheel rotation is locked inside the escalator. The wheel rotation is unlocked when entering and exiting the escalator. As a result, the cart inside the escalator pushes the outside cart. Even if the rotation of the wheel is locked, each L-shaped vehicle body does not lock the rotation of each axle, so that it is possible to cope with a change in the step shape of the escalator. If you want to fix the car body with the lower wheel in close contact with the kick, the upper wheel should be spaced from the kick. As shown in (b) to (c), the process of dropping continues to the stable state of (a) while inviting each other to fall. When the upper wheel finally wants to be fixed in close contact with the kick, set the inter-vehicle distance so that the lower wheel is spaced from the lower non-slip. (A) is in a stable state, (b) is in a state where the other wheel of the contact side wheel slides down to the lower stage, and (c) is in a state of sliding down to the lower stage following (b). Indicates the state. Is an explanatory view of a brake (F11) that stops the rotation of the wheels in the downward direction when the vehicle body is tilted, and (a) shows a state during flat running. The car body is horizontal, and the protrusions on the bottom of the board suspended from the car body do not touch the tire. (B) is a state in which the vehicle body is tilted and the protrusion is in contact with the tire, and (c) is a circular movement on the locus indicated by the alternate long and short dash line as the contacting protrusion rotates in the descending direction of the wheel, and is caught in the wheel and bites into it. Indicates the state. Since rotation in the direction opposite to the falling direction is allowed, the wheel that has come out of the escalator at the exit is pushed out by a rotatable and fixed wheel inside. Is an explanatory view of a device (F12) that finally settles the wheel in a position closely contacting with the kick-in, in (a) when the bumper kicks in, (b) in which the protrusion of the nesting iron catches the non-slip part and the wheel lowers (C) shows a state in which the wheel does not move just by rotating the blade. Is a functional diagram of the spiral wheel (F13) having a part of the spiral curve as an arc, (a) is during flat running, and the spiral wheel is suspended from the vehicle body and is not grounded. (B) and (c) each contact with the tread or the kick when tilted. In (b), the wheel is moved closer to the kick. In (c), it functions to move away from the kick. Can be moved. When the vehicle body moves backward in (b), the entire vehicle body is lifted, so that the semicircular wheel also serves as a brake for stopping the vehicle body from moving backward. 1 is a device attached to the top of the cart shown in FIG. 1. (a) is a flat running state (b) is near the ascending exit (c) is a state diagram near the descending exit, and (b) and (c) are respectively kicked from A mechanism (F14) for moving a required distance in the direction of moving away or approaching is shown. (B) and (c) are respectively the same as FIG. 12 and FIG. 13 in principle. However, in (b), the getter and the lever are articulated so as to be rotatable, and the spiral wheel of (C) needs to have a sliding surface. Do not move the cart any more. Is an explanatory diagram of an L-shaped lever (F15) that pushes up the arm only when the tip catches the step corner. (A) When flat running (b) When the tip guide roller slides on the step surface, the L-shaped lever Shows a state in which the arm does not push up the arm, and (c) shows a state in which the corner rotates and the contact fits into the arm, so that the arm and the tip join to push up the arm. 4 is a load drop-off recovery device in FIG. 4. (a) to (d) show the process of falling off the support surface at the riser and falling to the step surface, and (e) to (f) are the hits at the exit. A process of returning to the flat state in FIG. At the ascending exit, only the step on which the front wheel rides rises, and the step on the rear wheel remains at the level of the lower floor. In (b), the getter rotates with the inclination of the vehicle body and the contact is lost, and the loading platform falls off. (C) (d) represents a state that the sliding surface of the board to which the front wheel is attached slides on the corner and the loading platform falls. In the vicinity of the exit, the step on which the wheel rides descends, and the subsequent steps maintain a staircase shape. In the state of (f) than the state of (b) where the contact is lost, the inclination of the vehicle body is steep, and the position of the contact receiving is lower than in the case of (b). When the step with the rear wheel goes up and the car body becomes horizontal, the receiver enters from underneath. Is a handle (F17) that is braked when the hand is released, and (a) is a state diagram in which the hand is released, showing a state in which the lever with the brake has dropped and pressed the tire. (B) shows a state in which the lever is lifted and the brake is released when the guide rail at the tip of the lever rides on the step storage board at the end of the escalator or when the handle is pushed back and forth. When the guide rail at the tip of the lever jumps up, the lever with the guide rail and the lever with the brake are combined to keep the brake off. This union will not leave unless the handle is pushed. The wheel that escapes from the escalator becomes disengaged from the brake. Is an explanatory diagram of a system in which only an ascending cart passes through the ascending entrance and only a descending cart passes through the descending entrance. (A) and (b) are the ascending entrance (c) and (d) are in the vicinity of the descending entrance. Figures (a) and (c) are side views, and (b) and (d) are front views, respectively. The ascending specification cart shown in (a) turns into a descending specification cart shown in (c) if the handle is attached to the opposite side, and the height of the protrusion attached to the handle changes. Each entrance gate is provided with a groove (F18) having a different height so that a cart in which the height of the protrusion matches the height of the protrusion of the groove can pass. In the figure, an arrow → ○ indicates passing, and an arrow → × indicates non-passing. These are explanatory drawings of the system which sorts the specification of up-and-down, without doing anything at the time of escalator approach. (A) is a plan view, the trillions (F19) that allow only one-way rotation are mounted at different heights, and the center cart in (b) It explains that only one of them can pass through the gate. For two types of sorting gates having grooves of different heights, one can pass but the other cannot pass. In the figure, an arrow → ○ indicates a direction in which movement is possible, and an arrow → × indicates a direction in which movement is impossible. FIG. 5 shows the embodiment of FIG. 5 and is an explanatory view of attachment of each component drawing.

Explanation of symbols

(1) Car body (2) Rotating shaft (axle) that supports the weight of the car body
(3) Wheel (4) Wheel rotation shaft (5) Hinge (6) Panel with multiple rotation shafts (7) Panel with hinges at both ends (8) Connecting rod tie rod (9) Per (10) Per bearing ( 11) cushioning material such as rubber (12) getter (13) lever (14) spring lever (15) semi-circular wheel (16) caster (17) guide roller (18) suspension member (19) protrusion (20) basket (21 ) Handle (22) Loading platform (23) Loading platform support (24) Pedestal (25) Chair (26) Recessed semicircular rail (27) Sled (28) Bumper (29) Trillion (30) Nut (31) Mounting bolt (32) Hole (33) Long hole (34) Spring (35) Wire (36) Tire (37) Escalator kick-in part (38) Escalator tread part (39) Escalator non-slip part (4 0) Sliding surface with non-slip part (41) Escalator step opening (42) Ground (43) Slope (44) Pole ground part (45) Pole embedding part (46) Grooved gate (47) Groove (48) Wheel Guide groove (49) Slide base (50) Hook surface with non-slip part (51) Brake F1 Anti-falling hit F2 Wedge with three guide rollers F3 Hanger F4 hanging on front corner of vehicle body Restoring device F5 Escalator cart F6 made of two pantographs that can be folded down to the upper side in the middle of the vehicle body F7 An anti-falling storage type outrigger F8 that is stored during flat running, one unit L-shaped vehicle body F9 Escalator cart F10 with the bottom wheel in close contact with the kick Escalator cart F11 with the upper wheel in close contact with the kick F11 Brake that locks the rotation in the direction to descend when the vehicle body is tilted and releases it in the horizontal direction F12 A semi-circular wheel with an arc part F14 A mechanism F15 that moves away from or closer to the kicker by a required distance F15 A lever F16 that is attached to the handle-side L-type lever F16 that disables its function at the exit. Brake F18 that is released when separated Two kinds of sorting gates F19 having grooves of different heights Tr1 X1-X1 Straight line X2-X2 Straight line indicating inclination of escalator X3-X3 Straight line showing inclination of vehicle body Straight line ABCDEFG showing inclination Pin joint contact R1, R2 Guide roller

Claims (11)

As illustrated in FIG. 1, an escalator cart of a type in which a step rise in an escalator is changed to a rotational movement of a getter or a lever, and this is transmitted to a reciprocating movement of the wedge to push up the bed by the wedge principle. As illustrated in Fig. 4, an escalator cart that returns to a flat running state by removing the contact that supported the loading platform by tilting the cart at the entrance and re-entering the contact at the exit, and then removing the loading platform from the vehicle body and leveling the loading platform. Escalator cart As illustrated in FIG. 5, an escalator cart that bends in two when the bottom of the vehicle body lands on the step corner and brings the loading platform closer to the horizontal. An escalator cart in which the horizontal surface of the escalator is interlocked with the horizontal surface of the loading platform by a parallelogram pantograph as illustrated in FIG. As shown in FIGS. 12, 13, and 14, a device for forcibly moving a vehicle body with a semi-circular wheel having a scallop or spiral curve in an arc and fixing the cart in the final position immediately after entering the escalator. As illustrated in FIG. 3, a brake that suppresses the sliding of the vehicle body when the vehicle is tilted by a ground that springs up and presses the wheel. As illustrated in FIG. 11, a brake that is suspended horizontally without a tire in contact with the vehicle body and has a protrusion on the bottom, and stops rotation of the wheel in the downward direction when the vehicle body is tilted. As illustrated in FIG. 17, regardless of whether the escalator is inside or outside, the brake is applied when the hand is released while the brake is released, and the brake is released when the escalator is released. The brake allows the cart to escape without any operation when the escalator is released. . For carts whose ascending specifications change to descending specifications when used backwards and forwards with respect to the traveling direction, as shown in FIGS. 18 and 19, only the carts with the ascending specifications at the ascending exit and the descending specifications at the descending exit A system that allows only carts to pass through. As shown in FIG. 7, in a wheelchair that hangs a sled that bites into the step corner of the escalator, when the sled is fixed to the escalator, the wheel slides down to hold the head of the wheelchair to the sled. An escalator-type wheelchair in which the entire wheelchair rotates backward and stops in a horizontal state, and as shown in the drawings, the car body falls down when it leans and slides out as the car body tilts and sinks from the outside to the inside when it is level Storage outriggers for prevention As shown in FIG. 9, the lower wheel is in close contact with the kick and the upper wheel is spaced from the kick, or the upper wheel is in close contact with the kick as shown in FIG. Design the inter-vehicle distance so that there is a gap, make sure that the car body slides down to the lower stage inside the escalator, and then stops for two stages at a position where there is no fear of sliding down immediately afterwards. Can be escalator cart.

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