Lifting platform device with adjustable stroke for locomotive

Abstract

The utility model discloses a lifting platform device with an adjustable stroke for a locomotive, and solves the problems that a pneumatic lifting platform is provided with an air locking spring device and is not easy to control; and most pneumatic lifting devices are fixed gears and cannot be accurately adjusted to the height required by a driver, and the lifting platform can work only by providing large treading force. The device comprises an upper support assembly, a lower support assembly, a crisscross frame, an electric push rod and a controller. The electric push rod is electrically connected with the controller; the electric push rod can be controlled to extend or retract through the controller; the electric push rod is controlled by the controller to extend or retract, the height of the cross frame is adjusted, and meanwhile, the movable end of the cross frame moves along with the fixed C-shaped guide rail groove, so that the height adjustment of the lifting platform is more accurate. According to the utility model, the maximum height and the minimum height of the crisscross frame are limited by the action cam switch and the microswitch, so that the automation degree is high, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of main control electrical appliances for a driver's console, in particular to a lifting platform device with adjustable travel for a locomotive. Background Art

[0002] For many years, control electronics such as alarm devices, electromagnetic pedals, and pneumatic pedals have been widely used in EMUs, diesel locomotives, electric locomotives, subways, and urban rail transit projects. Among these, lift platforms are the most commonly used. Existing lift platforms mostly use pneumatic operation. Because pneumatic lifts have locking gas springs that are difficult to control, and most pneumatic lifts have fixed gears (such as two or three gears), they cannot be precisely adjusted to the driver's desired height, resulting in certain limitations during use. Furthermore, the driver needs to apply a large pedal force to activate the lift, which can cause fatigue and affect driving comfort. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems that the pneumatic lifting platform has a locking gas spring device that is difficult to control, and most pneumatic lifting devices have fixed gears that cannot be accurately adjusted to the height desired by the driver, and a large pedaling force is required to make the lifting platform work. The utility model provides a lifting platform device with adjustable stroke for locomotives.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a lifting platform device with adjustable stroke for locomotives, which is special in that it includes an upper bracket assembly, a lower bracket assembly, a cross frame, an electric push rod and a controller; the electric push rod is electrically connected to the controller; the controller can control the extension or contraction of the electric push rod;

[0006] The upper bracket assembly and the lower bracket assembly are both U-shaped frames, with C-shaped guide rail grooves provided on the inner sides thereof;

[0007] The four ends of the cross frame are an upper fixed end, an upper movable end, a lower movable end and a lower fixed end in sequence; the lower fixed end is connected to the lower bracket assembly through a first pin shaft, and the lower movable end is connected to the first roller shaft, and the two ends of the first roller shaft respectively extend into the C-shaped guide rail groove of the lower bracket assembly; the upper fixed end is connected to the upper bracket assembly through a second pin shaft, and the upper movable end is connected to the second roller shaft, and the two ends of the second roller shaft respectively extend into the C-shaped guide rail groove of the upper bracket assembly; the first roller shaft and the second roller shaft move along the C-shaped guide rail groove of the lower bracket assembly and the C-shaped guide rail groove of the upper bracket assembly respectively, which can improve the lifting and lowering accuracy of the cross frame.

[0008] The lower bracket assembly is connected to the telescopic end of an electric push rod via a rotating shaft near the lower fixed end. The fixed end of the electric push rod is connected to the cross frame near the lower movable end via a shaft. The extension or contraction of the electric push rod controls the distance between the lower movable end and the lower fixed end of the cross frame, thereby controlling the height of the cross frame.

[0009] Furthermore, two micro switches are fixedly connected to the lower bracket assembly, and two action cam switches are connected to the side of the lower fixed end of the cross frame, and each action cam switch is connected to a micro switch and is used to trigger the micro switch;

[0010] Both of the micro switches are connected to the controller; the lower fixed end of the cross frame rotates around the first pin shaft under the push of the extension or shortening of the electric push rod, and at the same time drives the action cam switch to rotate. During the rotation process, the micro switch can be triggered to send an instruction to the controller to stop the extension or shortening of the electric push rod.

[0011] Furthermore, the two ends of the first roller shaft are respectively connected to a lower roller, and the two lower rollers respectively roll in the C-shaped guide rail groove of the lower bracket assembly, thereby reducing the friction between the first roller shaft and the C-shaped guide rail groove of the lower bracket assembly.

[0012] Furthermore, the two ends of the second roller shaft are respectively connected to an upper roller, and the two upper rollers respectively roll in the C-shaped guide groove of the upper bracket assembly; the friction between the second roller shaft and the C-shaped guide groove of the upper bracket assembly is reduced by the upper roller.

[0013] Furthermore, the cross frame includes a first U-shaped bracket, a second U-shaped bracket and a pin shaft. The middle part of the first U-shaped bracket is cross-arranged with the middle part of the second U-shaped bracket, and the pin shaft passes through the intersection position; the upper end of the first U-shaped bracket is the upper fixed end, and the bottom end is the lower movable end, the upper end of the second U-shaped bracket is the upper movable end, and the lower end is the lower fixed end.

[0014] Furthermore, the electric push rod is connected to a power source via a wire.

[0015] Furthermore, a tubular drag chain is included, and the wires are arranged inside the drag chain to prevent the wires from being excessively bent or worn.

[0016] Furthermore, the bottom of the lower bracket assembly is fixedly connected to the first base plate assembly and the second base plate assembly.

[0017] Beneficial effects of the utility model:

[0018] 1. The utility model relates to a lifting platform device with adjustable stroke for locomotive, which changes the traditional pneumatic working mode, and the height of the cross frame is adjusted by the controller to control the extension or shortening of the electric push rod, and the movable end of the cross frame moves along with the fixed C-shaped guide rail groove, so that the height adjustment of the lifting platform is more accurate.

[0019] 2. The utility model relates to a lifting platform device with adjustable stroke for locomotive, which adopts the action cam switch and the microswitch to limit the maximum and minimum height of the cross frame, has high automation degree and improves the safety in use.

[0020] 3. The utility model relates to a lifting platform device with adjustable stroke for locomotive, which has simple structure and is easy to realize, and is stable and reliable during operation. DRAWINGS

[0021] Figure 1 It is the perspective structural schematic diagram in the utility model of a lifting platform device with adjustable stroke for locomotive.

[0022] Figure 2 It is the plan view in the utility model of a lifting platform device with adjustable stroke for locomotive.

[0023] Figure 3 It is the side view in the utility model of a lifting platform device with adjustable stroke for locomotive.

[0024] Figure 4 It is the left view in the utility model of a lifting platform device with adjustable stroke for locomotive.

[0025] Figure 5 It is the schematic view of the action cam switch and the microswitch in the utility model of a lifting platform device with adjustable stroke for locomotive.

[0026] In the drawing, 1 is an upper support assembly, 2 is a lower support assembly, 3 is a cross frame, 301 is a first L-shaped support, 302 is a second L-shaped support, 303 is a pin shaft, 4 is an electric push rod, 5 is a controller, 6 is a first pin shaft, 7 is a first roller shaft, 8 is a second pin shaft, 9 is a second roller shaft, 10 is a power supply, 11 is a drag chain, 12 is a microswitch, 13 is an action cam switch, 14 is a first bottom plate assembly, and 15 is a second bottom plate assembly. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be described clearly and completely in connection with the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] The utility model discloses a kind of adjustable stroke's lifting platform devices for locomotive, as shown in Figure 1 And Figure 2 It includes upper support assembly 1, lower support assembly 2, cross frame 3, electric push rod 4 and controller 5;Electric push rod 4 is electrically connected with controller 5;The lengthening or shortening of electric push rod 4 can be controlled by controller 5.

[0029] As shown in Figure 3 And Figure 4 Upper support assembly 1, lower support assembly 2 are all mouth-shaped frame, and C-shaped guide slot is oppositely arranged in the inside;The four end portions of cross frame 3 are upper fixed end, upper movable end, lower movable end and lower fixed end in sequence;Lower fixed end is connected on lower support assembly 2 by first pin shaft 6, lower movable end is connected with first roller shaft 7, and the two ends of first roller shaft 7 respectively extend into the C-shaped guide slot of lower support assembly 2, and the two ends of first roller shaft 7 are respectively connected with one lower roller, and the two lower rollers respectively roll in the C-shaped guide slot of lower support assembly 2;Upper fixed end is connected on upper support assembly 1 by second pin shaft 8, and upper movable end is connected with second roller shaft 9, and the two ends of second roller shaft 9 respectively extend into the C-shaped guide slot of upper support assembly 1, and the two ends of second roller shaft 9 are respectively connected with one upper roller, and the two upper rollers respectively roll in the C-shaped guide slot of upper support assembly 1;The telescopic end of electric push rod 4 is connected by pivot on lower support assembly 2 close to lower fixed end, and the fixed end of electric push rod 4 is connected on cross frame 3 close to lower movable end position.

[0030] The lengthening or shortening of electric push rod 4 can be controlled by controller 5;When lengthening, the distance between lower movable end and lower fixed end of cross frame 3 increases, and the height of cross frame 3 reduces. When shortening, the distance between lower movable end and lower fixed end of cross frame 3 reduces, and the height of cross frame 3 increases. When the distance between upper movable end and upper fixed end changes, upper movable end moves along the C-shaped guide slot of upper support assembly 1 by the upper roller connected on second roller shaft 9;When the distance between lower movable end and lower fixed end changes, lower movable end moves along the C-shaped guide slot of lower support assembly 2 by the lower roller connected on first roller shaft 7;It can increase the stability of movement control, and reduce the friction force of movement simultaneously.

[0031] In this embodiment, a lifting platform device with an adjustable stroke for locomotives changes the structure of the traditional pneumatic lifting platform, effectively solving the problem of requiring a large pedaling force due to the locking gas spring device. At the same time, the height of the lifting platform can be adjusted with the driver during the lifting process (steplessly), thereby improving the driver's driving comfort.

[0032] like Figure 5 As shown, in this embodiment, two micro switches 12 are fixedly connected to the lower bracket assembly 2, and two action cam switches 13 are connected to the side of the lower fixed end of the cross frame 3. Each action cam switch 13 is connected to a micro switch 12 and is used to trigger the micro switch 12;

[0033] Both micro switches 12 are connected to the controller 5 ; when one of the action cam switches 13 triggers a micro switch 12 , the micro switch 12 sends a command to the controller 5 to control the electric push rod 4 to stop moving.

[0034] The lower fixed end of the cross frame 3 rotates around the first pin 6 under the push of the electric push rod 4, and at the same time drives the action cam switch 13 to rotate. During the rotation, the micro switch 12 can be triggered to send a command to the controller 5 to stop the extension or contraction of the electric push rod 4. The highest or lowest position of the lifting platform can be limited by the action cam switch 13 and the micro switch 12.

[0035] In this embodiment, Figure 3 As shown, the cross frame 3 includes a first U-shaped bracket 301, a second U-shaped bracket 302, and a pin 303. The middle portion of the first U-shaped bracket 301 intersects the middle portion of the second U-shaped bracket 302, with the pin 303 passing through the intersection. The upper end of the first U-shaped bracket 301 is the upper fixed end, and the lower end is the lower movable end. The upper end of the second U-shaped bracket 302 is the upper movable end, and the lower end is the lower fixed end, forming a "scissors brace" structure. The electric push rod 4 is extended and retracted to control the movement of the movable end of the "scissors brace" structure in the C-shaped groove, thereby achieving the smooth lifting function of the lifting platform.

[0036] In this embodiment, the electric push rod 4 is connected to a power source 10 via a wire for supplying power to the electric push rod 4 .

[0037] This embodiment further includes a tubular drag chain 11, and the wires are arranged inside the drag chain 11, which can prevent the wires from being excessively bent or worn.

[0038] In this embodiment, the bottom of the lower bracket assembly 2 is fixedly connected to the first base plate assembly 14 and the second base plate assembly 15 for connection to the locomotive.

[0039] The above merely illustrates the specific implementation of the present application, and the effect comparison of the relevant specific implementation and the related comparative examples, but the protection scope of the present application is not limited to this, any change or replacement within the technical range disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A locomotive lifting platform device with adjustable travel, characterized in that: It comprises an upper support assembly (1), a lower support assembly (2), a cross frame (3), an electric push rod (4) and a controller (5); the electric push rod (4) is electrically connected to the controller (5); The upper bracket assembly (1) and the lower bracket assembly (2) are both U-shaped frames, with C-shaped guide rail grooves formed on the inner sides thereof. The four ends of the cross frame (3) are an upper fixed end, an upper movable end, a lower movable end and a lower fixed end in sequence; the lower fixed end is connected to the lower bracket assembly (2) via a first pin shaft (6), the lower movable end is connected to a first roller shaft (7), and both ends of the first roller shaft (7) extend into the C-shaped guide rail groove of the lower bracket assembly (2); the upper fixed end is connected to the upper bracket assembly (1) via a second pin shaft (8), the upper movable end is connected to a second roller shaft (9), and both ends of the second roller shaft (9) extend into the C-shaped guide rail groove of the upper bracket assembly (1); The lower bracket assembly (2) is connected to the telescopic end of the electric push rod (4) via a rotating shaft near the lower fixed end, and the fixed end of the electric push rod (4) is connected to the cross frame (3) near the lower movable end via a shaft.

2. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: Two micro switches (12) are fixedly connected to the lower bracket assembly (2), and two action cam switches (13) are connected to the side of the lower fixed end of the cross frame (3), and each action cam switch (13) is in contact with a micro switch (12) and is used to trigger the micro switch (12); The two micro switches (12) are both connected to the controller (5).

3. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: The two ends of the first roller shaft (7) are respectively connected to a lower roller, and the two lower rollers respectively roll in the C-shaped guide rail groove of the lower bracket assembly (2).

4. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: The two ends of the second roller shaft (9) are respectively connected to an upper roller, and the two upper rollers respectively roll in the C-shaped guide rail groove of the upper bracket assembly (1).

5. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: The cross frame (3) comprises a first U-shaped bracket (301), a second U-shaped bracket (302) and a pin (303); the middle portion of the first U-shaped bracket (301) and the middle portion of the second U-shaped bracket (302) are arranged to cross each other, and the pin (303) passes through the cross position; the upper end of the first U-shaped bracket (301) is an upper fixed end, and the bottom end is a lower movable end; the upper end of the second U-shaped bracket (302) is an upper movable end, and the lower end is a lower fixed end.

6. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: The electric push rod (4) is connected to a power source (10) via a wire.

7. The locomotive-use adjustable-stroke lifting platform device according to claim 6, characterized in that: It also includes a tubular drag chain (11), wherein the wires are arranged inside the drag chain (11).

8. The locomotive-use adjustable-stroke lifting platform device according to claim 1, characterized in that: The bottom of the lower support assembly (2) is fixedly connected to the first base plate assembly (14) and the second base plate assembly (15).

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