Wheelchair lifting platform folding pedal and wheelchair lifting platform

Abstract

The present invention discloses a foldable pedal for a wheelchair lifting platform, comprising a pedal main body, wherein the pedal main body is connected to a main machine via a first connecting mechanism and a second connecting mechanism. The pedal of the present application is connected to the main machine via the first connecting mechanism and the second connecting mechanism, and is driven to open or fold by an electric push rod. The pedal has a simple structure and is easy to operate, thereby being convenient for promotion and use in the industry.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchair lifting platforms, and in particular to a foldable pedal of a wheelchair lifting platform and a wheelchair lifting platform. Background Art

[0002] The wheelchair lifting platform includes a main unit and a pedal. When in use, the wheelchair is placed on the pedal and is lifted and lowered by the platform. When the pedal is open, it occupies a large space. Therefore, when not in use, the pedal needs to be folded up to avoid occupying too much passage space, causing great trouble to pedestrians, and even the risk of bumping into pedestrians. Summary of the invention

[0003] Based on the problems existing in the above-mentioned prior art, the purpose of the present application is to provide a foldable pedal of a wheelchair lifting platform and a wheelchair lifting platform.

[0004] To achieve the purpose of the present invention, the present invention provides a foldable pedal for a wheelchair lifting platform, comprising a pedal body, wherein the pedal body is connected to a host through a first connecting mechanism and a second connecting mechanism.

[0005] The first connection mechanism includes a first bracket, a first guide roller, and a first hinge block. The first bracket is arranged at one side of the lower end of the main body housing. The roller shaft of the first guide roller is hingedly connected to the first bracket. A first hinge block is arranged below the first guide roller. First hinge shafts are arranged on both sides of the first hinge block, which is hingedly connected to the first bracket through the first hinge shaft. The lower end of the first hinge block is connected to the pedal body.

[0006] The second connecting mechanism includes a second bracket, a second guide roller, and a second hinge block. The second bracket is arranged on the other side of the lower end of the main body shell, the roller shaft of the second guide roller is hingedly connected to the second bracket, and a second hinge block is arranged below the second guide roller. Hinge shafts are arranged on both sides of the second hinge block, which is hingedly connected to the second bracket through the second hinge shaft, and the lower end of the second hinge block is connected to the pedal body; the upper end of the second hinge block is hingedly connected to the lower end of the telescopic rod of the electric push rod through a rotating shaft, and the electric push rod is arranged on the main body shell, and the second hinge block is driven to rotate around the second hinge shaft through the extension and retraction of the electric push rod. At the same time, the first hinge block rotates around the first hinge shaft, thereby driving the pedal to fold or open.

[0007] Among them, a limit lever is arranged on the telescopic rod of the electric push rod, and an upper limit travel switch and a lower limit travel switch are arranged on the main body housing on one side of the electric push rod. The limit lever is used in conjunction with the upper limit travel switch and the lower limit travel switch.

[0008] Among them, the upper limit travel switch and the lower limit travel switch are XCK-T121.

[0009] Correspondingly, the present application also provides a wheelchair lifting platform, comprising a main unit and the folding pedal of the wheelchair lifting platform.

[0010] Compared with the prior art, the beneficial effect of the present invention is that the pedal of the present application is connected to the main machine through the first connecting mechanism and the second connecting mechanism, and is driven to open or fold by the electric push rod. It has a simple structure, is easy to operate, and is easy to promote and use in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the wheelchair lifting platform for this application;

[0012] Figure 2 This is a first structural schematic diagram of the foldable pedal of the present application;

[0013] Figure 3 This is a second structural schematic diagram of the foldable pedal of the present application;

[0014] Figure 4 This is a third structural schematic diagram of the foldable pedal of the present application;

[0015] Figure 5 This is a schematic diagram of the second connection structure of this application;

[0016] Figure 6 This is a schematic diagram of the first connection structure of this application;

[0017] Figure 1-6 Among them, 1-main machine, 2-pedal body, 3-first connecting mechanism, 4-second connecting mechanism, 5-electric push rod, 6-telescopic rod, 7-limit lever, 8-upper limit micro switch, 9-lower limit micro switch, 10-second bracket, 11-second guide roller, 12-second hinge block, 13-first guide roller, 14-first bracket, 15-first hinge block.

[0018] Figure 7 A fourth schematic diagram of the pedal structure of the wheelchair lifting platform of the present application;

[0019] Figure 8 This is a fifth schematic diagram of the pedal structure of the wheelchair lifting platform of the present application;

[0020] Fig. 9 This is a sixth schematic diagram of the pedal structure of the wheelchair lifting platform of the present application;

[0021] Figure 7-9 Among them, 403-pedal upper plate, 405-pedal bottom plate, 406-mounting part, 407-micro-switch, 409-pedal bracket, 410-fixing block, 411-spring, 412-gasket, 413-bottom support plate shaft.

[0022] Fig.10 This is the first schematic diagram of the structure of the side baffle monitoring mechanism of this application;

[0023] Fig.11 This is the second schematic diagram of the structure of the side baffle monitoring mechanism of this application;

[0024] Fig.12 This is a schematic diagram of the installation of the side baffle monitoring mechanism for this application;

[0025] Figure 10-12 Among them, 603-side baffle, 604-pedal upper plate, 606-side baffle monitoring mechanism, 607-pedal bracket, 608-L-type bracket, 609-micro switch, 610-switch lever, 611-sliding column, 612-spring.

[0026] Fig.13 Shown is a schematic diagram of the installation position of the guide wheel of this application;

[0027] Fig.14 Shown is a schematic diagram of the structure of the linkage mechanism of this application;

[0028] Fig.15 The figure shows the structure schematic diagram of the reduction box of the present application;

[0029] Fig.16 Shown is a schematic structural diagram of the rotating shaft of the present application;

[0030] Figure 13-16 Among them, 707-guide wheel, 708-first stroke switch, 709-rotating shaft, 710-screw, 711-second stroke switch, 712-reduction box, 713-inverted U-shaped frame, 714-pin shaft, 715-drive motor, 716-upper pressure bearing, 717-second gear, 718-lower pressure bearing, 719-first gear, 720-connecting plate. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. Example

[0033] like Figure 1-Figure 6 As shown,

[0034] The present embodiment provides a foldable pedal for a wheelchair lifting platform, including a pedal body, the pedal body including an upper pedal, a pedal frame and a lower pedal, the pedal body being connected to a host through a first connecting mechanism and a second connecting mechanism.

[0035] The first connecting mechanism includes a first bracket, a first guide roller, and a first hinge block. The first bracket is arranged on one side of the lower end of the main body shell, and the first bracket includes two side fixing plates arranged at longitudinal intervals. The roller shaft of the first guide roller is hingedly connected to the first bracket. A first hinge block is arranged below the first guide roller. First hinge shafts are arranged on both sides of the first hinge block, which are hingedly connected to the first bracket through the first hinge shaft. The lower end of the first hinge block is connected to the pedal frame of the pedal body; the first guide roller can rotationally guide the first hinge block.

[0036] The second connecting mechanism includes a second bracket, a second guide roller, and a second hinge block. The second bracket is arranged on the other side of the lower end of the main body shell, the roller shaft of the second guide roller is hingedly connected to the second bracket, and a second hinge block is arranged below the second guide roller. Hinge shafts are arranged on both sides of the second hinge block, which is hingedly connected to the second bracket through the second hinge shaft, and the lower end of the second hinge block is connected to the pedal body; the upper end of the second hinge block is hingedly connected to the lower end of the telescopic rod of the electric push rod through a rotating shaft, and the electric push rod is arranged on the main body shell, and the second hinge block is driven to rotate around the second hinge shaft through the extension and retraction of the electric push rod. At the same time, the first hinge block rotates around the first hinge shaft, thereby driving the pedal to fold or open.

[0037] Wherein, a limit lever is arranged on the telescopic rod of the electric push rod, and an upper limit travel switch and a lower limit travel switch are arranged on the main body housing on one side of the electric push rod, and the limit lever is used in conjunction with the upper limit travel switch and the lower limit travel switch. When the telescopic rod is extended and retracted, the limit lever can contact the rollers of the upper limit travel switch and the lower limit travel switch, thereby triggering the upper limit travel switch and the lower limit travel switch. When extending downward, the pedal is folded, the lever triggers the lower limit travel switch, and the lower limit travel switch sends a signal to the PLC controller, and the PLC controller controls the electric push rod to stop extending downward; when pulling upward, the pedal is opened, the lever triggers the upper limit travel switch, and the upper limit travel switch sends a signal to the PLC controller, and the PLC controller controls the electric push rod to stop pulling upward.

[0038] Among them, the upper limit travel switch and the lower limit travel switch are XCK-T121.

[0039] Correspondingly, the present application also provides a wheelchair lifting platform, comprising a main unit and the folding pedal of the wheelchair lifting platform.

[0040] The pedal of the present application is connected to the main machine through a first connecting mechanism and a second connecting mechanism, and is driven to open or fold by an electric push rod. It has a simple structure, is easy to operate, and is convenient for promotion and use in the industry.

[0041] like Figure 7-9As shown, in other embodiments, a wheelchair lifting platform pedal fault opening monitoring device is also provided, wherein the pedal includes a pedal bracket 409 and a pedal upper plate connected to the upper end surface of the pedal bracket 409, and a pedal bottom plate 405 connected to the lower side of the pedal bracket 409, wherein a gap is provided between the pedal bottom plate 405 and the pedal bracket 409, and the lower side of the pedal bracket 409 is connected to the pedal bottom plate 405 via a mounting member 406, wherein the mounting member 406 includes a fixing block 410 fixed to the pedal bracket 409 and a connecting member 414. The bottom support plate shaft 413 connected to the fixed block 410 passes through the pedal bottom plate 405, the gasket 412, and the spring 411 in sequence, and then the upper end of the bottom support plate shaft 413 passes through the fixed block 410, and the bottom support plate shaft 413 is slidably connected with the fixed block 410. A micro switch 407 is arranged on the pedal bracket 409, and the lever of the micro switch 407 faces downward. The pedal bottom plate 405 slides upward along the bottom support plate shaft 413, so that the pedal bottom plate 405 touches the lever of the micro switch 407, thereby triggering the micro switch 407. There are four mounting parts 406, and the four mounting parts 406 are surrounded in a square. The model of the micro switch 7 is XV-153-IC25.

[0042] When a faulty pedal opens without control, the pedal base plate 405 at the bottom of the pedal directly contacts the ground of the landing station, causing the pedal base plate 405 to slide upward along the bottom support plate shaft 413, touching the lever of the microswitch 407, triggering the microswitch 407 to send out an alarm signal, and the microswitch 407 sends the signal to the PLC connection, and the PLC sends the signal to the control console. After receiving the alarm signal, the staff immediately arrives at the site to handle it, effectively solving the problem of monitoring the fault opening.

[0043] In a preferred embodiment, if Figure 10-12 As shown, the pedal bracket 607 is provided with a side baffle monitoring mechanism for monitoring the status of the baffle during operation. In addition, two side baffle 3 monitoring mechanisms are respectively provided on both sides of the pedal bracket 607 for monitoring the status of the side baffle 603. During operation, the side baffle 603 needs to be kept in an upturned state to avoid the danger of the wheelchair rolling off the pedal. Therefore, a side baffle 3 monitoring mechanism is provided to monitor the status of the side baffle 3 in real time during operation.

[0044] The monitoring mechanism of the side baffle 603 includes a micro switch 609 and a sliding column 611. The sliding column 611 includes a thick rod and a thin rod, which passes through the pedal bracket 607 horizontally and is slidably connected. The thin rod is sleeved with a spring 612. The end of the thick rod is exposed outside the pedal bracket 607, and the end of the thin rod is exposed inside the pedal bracket 607. The end of the thin rod is set with a limit so that it will not slide out of the jack. The micro switch 609 is connected to the pedal bracket 607 through an L-shaped bracket 608. The switch lever 610 is used in conjunction with the sliding column 611, and the inner end of the sliding column 611 is in contact with the switch lever 610. If the side baffle 603 falls accidentally, it will squeeze the outer side of the sliding column 611, so that the inner side of the sliding column 611 squeezes the switch lever 610, thereby triggering the micro switch 609 to send a signal. After the PLC controller receives the signal, the drive motor of the control host stops running. The model of the micro switch 609 is RV-162-IC25.

[0045] like Figure 13-16 In a preferred embodiment, a wheelchair lifting platform protection arm and side baffle linkage mechanism is provided, guide wheels 707 are provided at the lower ends of both sides of the main housing, and driving mechanisms are provided at the upper ends of both sides.

[0046] The driving mechanism includes a driving motor 715, a connecting plate 720, a reduction box 712, and a lead screw 710. The driving motor 715 is connected to the lower end of the connecting plate 720, and the upper end of the connecting plate 720 is connected to the reduction box 712. The reduction box 712 is connected to the main body housing through a bracket. The reduction box 712 longitudinally passes through the lead screw 710 and is threadedly connected to the lead screw 710. The lead screw 710 is driven to rise or fall by rotating the driving motor 15. The lower end of the lead screw 710 is connected to the upper end of the pull rope, and the other end of the pull rope is connected to the pull ring after passing around the guide wheel 707; the upper end of the lead screw 710 is hingedly connected to a rotating shaft 709 at one end of which is slidably connected to the main body housing, and a protective arm is installed at one end of the rotating shaft 709.

[0047] The lower end of the lead screw 710 is connected to an inverted U-shaped frame 713 , and the two sides of the lower end of the inverted U-shaped frame 713 are connected via a pin shaft 714 .

[0048] Among them, the reduction box 712 includes a first gear 719, the driving shaft of the driving motor 715 is connected to the first gear 719, a second gear 717 is arranged in the reduction box 712, the first gear 719 is transmission-connected with the second gear 717, a nut is arranged inside the second gear 717, and the lead screw 710 passes through the nut and is threadedly connected.

[0049] The upper and lower ends of the second gear 717 are connected to the inner upper wall of the reduction box 712 and the connecting plate 720 through an upper pressure bearing 716 and a lower pressure bearing 718. A side housing is disposed on both sides of the main housing.

[0050] When in use, the driving motor 715 rotates to make the screw 710 descend, thereby driving the rotating shaft 9 to rotate, so that the protection arm rotates and flips upward. At the same time, the pull rope moves downward under the action of gravity, so that the side baffle opens; conversely, when the driving motor 715 rotates to make the screw 710 rise, it drives the rotating shaft 709 to rotate, so that the protection arm rotates and falls from an upper state to a horizontal state. At the same time, the pull rope moves upward, so that the side baffle flips up, thereby protecting the wheelchair.

[0051] In addition, in order to control the rotation angle of the rotating shaft 709, a trigger block is provided on the rotating shaft 709, a first travel switch 708 is provided on the motor housing on the upper side of the rotating shaft 709, and a second travel switch 711 is provided on the motor housing on the lower side. By triggering the first travel switch 708 and the second travel switch 711, a trigger control signal is given to the PLC controller, and the PLC controller is connected to the motor control.

[0052] Where this patent does not describe anything, the prior art is applicable.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wheelchair lifting platform, characterized in that: It includes a main machine and a foldable pedal for a wheelchair lifting platform; the foldable pedal for the wheelchair lifting platform includes a pedal body, and the pedal body is connected to the main machine through a first connecting mechanism and a second connecting mechanism; The first connection mechanism includes a first bracket, a first guide roller, and a first hinge block. The first bracket is arranged at one side of the lower end of the main body housing. The roller shaft of the first guide roller is hingedly connected to the first bracket. A first hinge block is arranged below the first guide roller. First hinge shafts are arranged on both sides of the first hinge block, which is hingedly connected to the first bracket through the first hinge shaft. The lower end of the first hinge block is connected to the pedal body. The second connection mechanism includes a second bracket, a second guide roller, and a second hinge block. The second bracket is arranged at the other side of the lower end of the main body shell. The roller shaft of the second guide roller is hingedly connected to the second bracket. A second hinge block is arranged below the second guide roller. Hinge shafts are arranged on both sides of the second hinge block. The second hinge block is hingedly connected to the second bracket through the second hinge shaft. The lower end of the second hinge block is connected to the pedal body. The upper end of the second hinge block is hingedly connected to the lower end of the telescopic rod of the electric push rod through a rotating shaft. The electric push rod is arranged on the main body shell. The second hinge block is driven to rotate around the second hinge shaft by the extension of the electric push rod. At the same time, the first hinge block rotates around the first hinge shaft, thereby driving the pedal to fold or open. The pedal comprises a pedal bracket, a pedal upper plate connected to the upper end surface of the pedal bracket, and a pedal bottom plate connected to the lower side of the pedal bracket, wherein a gap is provided between the pedal bottom plate and the pedal bracket, and the lower side of the pedal bracket is connected to the pedal bottom plate through a mounting member, and the mounting member comprises a fixing block fixed on the pedal bracket and a bottom supporting plate shaft connected to the fixing block, and the bottom supporting plate shaft passes through the pedal bottom plate, the gasket, and the spring in sequence, and then its upper end passes through the fixing block, and the bottom supporting plate shaft is slidably connected with the fixing block, and a micro switch is arranged on the pedal bracket and the lever of the micro switch faces downward, and the pedal bottom plate slides upward along the bottom supporting plate axis, so that the pedal bottom plate touches the lever of the micro switch, thereby triggering the micro switch; wherein, when a faulty pedal is opened without control, the pedal bottom plate at the bottom of the pedal directly contacts the ground of the layer station, so that the pedal bottom plate slides upward along the bottom supporting plate axis, and touches the lever of the micro switch, triggering the micro switch to send an alarm signal, and the micro switch sends the signal to the PLC connection, and the PLC sends the signal to the control console, and after receiving the alarm signal, the staff immediately goes to the place to handle it.

2. The wheelchair lifting platform according to claim 1, characterized in that: A limit lever is arranged on the telescopic rod of the electric push rod, an upper limit travel switch and a lower limit travel switch are arranged on the main body housing on one side of the electric push rod, and the limit lever is used in conjunction with the upper limit travel switch and the lower limit travel switch.

3. The wheelchair lifting platform according to claim 2, characterized in that: The upper limit travel switch and the lower limit travel switch are XCK-T121.

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