CN210390956U - Folding telescopic stair for instrument vehicle - Google Patents
Folding telescopic stair for instrument vehicle Download PDFInfo
- Publication number
- CN210390956U CN210390956U CN201921023912.5U CN201921023912U CN210390956U CN 210390956 U CN210390956 U CN 210390956U CN 201921023912 U CN201921023912 U CN 201921023912U CN 210390956 U CN210390956 U CN 210390956U
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- CN
- China
- Prior art keywords
- stair
- sliding frame
- folding
- guide rail
- rail groove
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Abstract
The utility model relates to a folding flexible stair for instrument vehicle, the folding flexible stair is arranged at the vehicle door, a storage cavity is arranged below the vehicle door, the folding flexible stair comprises a plurality of hinged stair sections, pedals are arranged on the stair sections, an upper sliding frame and a lower sliding frame are also included, and the two are arranged at two sides of the stair sections; an upper guide rail groove and a lower guide rail groove are arranged in the storage cavity, the upper sliding frame is in sliding fit with the upper guide rail groove, and the lower guide rail groove is in sliding fit with the lower sliding frame; the lower part of the stair section of the lowest end of the folding telescopic stair with the first section from the last is provided with a push rod motor, and the end of the push rod motor is contacted with the ground; the hinged part of the last but one section of the folding telescopic stair and the hinged part of the last but one section of the folding telescopic stair, the end surface of the last but one section of the folding telescopic stair is provided with a spring telescopic pin, one end of the spring telescopic pin is exposed out of the end surface, and the other end of the spring telescopic pin is provided with a pressure sensor A. The beneficial effect of this scheme is: the upper end and the bottom end are fixed, the stability of the long stair is improved, and the deformation can be prevented, so that the service life is prolonged.
Description
Technical Field
The utility model relates to an instrument truck complementary unit equipment technical field, especially an instrument truck is with folding flexible stair.
Background
In the conventional trolley, a pedal is arranged at a vehicle door in order to facilitate people to walk out of the trolley. Some trucks, which are lower than the truck at a high height, are provided with stair-like steps having handrails.
However, it is very inconvenient for the touring bus or some large-sized vehicles to set the pedals up and down. Some companies have therefore developed ladders that do not have particularly steep slopes and can be stepped on directly without holding the handles, and these small-gradient ladders are usually telescopic.
However, the instrument vehicle is different from other vehicles, various precise instruments and experiment tables are arranged in the vehicle, and the instrument vehicle is suitable for field experiment operation. In order to avoid the damage to the instruments caused by the water on the ground entering the vehicles, the vehicles are driven to the field, so the height of the bottom plate is designed to be higher. The step of the ladder with the handrail is not beneficial to the up and down of the worker when picking up the experimental equipment, so that only the folding stair with a smaller gradient can be adopted.
However, because the height of the bottom plate of the instrument trolley is high, if the length of the folding stair is too short, the height of the folding stair is a certain distance away from the ground, and the instrument trolley is not beneficial to walking; and because the storage space is limited after folding, the folding stair can not be designed to be too long, and can only be designed to be of a medium length. But the folding stair of medium length, its lower extreme is unsettled, and the people steps on and takes place to rock easily on, the condition of breaking experimental facilities may appear.
Therefore, the folded stairs are improved by the company under the condition of the existing instrument trucks.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, thereby provide an upper end and bottom all by fixed, improve its long stair's stationarity, can prevent to take place to warp and improve life's automobile-used folding flexible stair of instrument.
The purpose of the utility model is realized through the following technical scheme: a folding telescopic stair for an instrument vehicle is arranged at a vehicle door, a storage cavity is arranged below the vehicle door, the folding telescopic stair comprises a plurality of hinged stair sections, pedals are arranged on the stair sections, an upper sliding frame and a lower sliding frame are arranged on two sides of each stair section, the upper sliding frame is arranged at the upper part of the folding telescopic stair, and the lower sliding frame is arranged in the middle of the folding telescopic stair;
an upper guide rail groove and a lower guide rail groove are arranged in the storage cavity, the upper sliding frame is in sliding fit with the upper guide rail groove, and the lower guide rail groove is in sliding fit with the lower sliding frame;
the lower part of the stair section of the lowest end of the folding telescopic stair is provided with a push rod motor, and the end of the push rod motor is in contact with the ground;
the folding telescopic stair is characterized in that the lowermost end of the folding telescopic stair is hinged with a stair joint of a first section from the lowest to the lowest and a second section from the lowest to the lowest, a spring telescopic pin is arranged on the end surface of the stair joint of the second section from the lowest to the lowest, one end of the spring telescopic pin is exposed out of the end surface, and a pressure sensor A is arranged at the other end of the spring telescopic pin;
the pressure sensor is electrically connected with the push rod motor through the control panel, and the output shaft of the push rod motor extends out to be contacted with the ground when the pressure sensor A senses pressure.
Further, the side wall of the upper guide rail groove and the side wall of the lower guide rail groove are both provided with waist-shaped grooves, and the upper sliding frame and the lower sliding frame penetrate into the waist-shaped grooves through transverse pins to realize sliding fit with the upper guide rail grooves.
Furthermore, a large through hole in the vertical direction is formed in the upper wall of the upper guide rail groove, and a corresponding small through hole is formed in the upper sliding frame;
a hydraulic cylinder is arranged above the large through hole, an annular table is arranged on an output shaft of the hydraulic cylinder, when the output shaft of the hydraulic cylinder moves downwards, the end head of the output shaft penetrates into the small through hole, and the annular table abuts against the upper surface of the upper sliding frame.
And a pressure sensor B is arranged on the wall of the outer end of the waist-shaped groove and is electrically connected with the hydraulic cylinder through a control panel.
The hydraulic cylinder and the push rod motor are also provided with other control routes which are connected with control buttons arranged in the cab.
The utility model has the advantages of it is following: (1) by arranging the push rod motor, even if the instrument vehicle requires that the folding telescopic stair is long enough, the instrument vehicle still can ensure that the folding telescopic stair does not shake, so that the folding telescopic stair is stably supported; (2) the arrangement of the spring telescopic pin and the pressure sensor A can automatically extend and retract the output shaft of the push rod motor when the folding telescopic stair is unfolded, manual operation is not needed, and the folding telescopic stair is simple and convenient; (3) the setting of pneumatic cylinder, annular platform, big through-hole and little through-hole then provides an overdraft in folding flexible stair's upper end department, and this overdraft can further guarantee folding flexible stair's stationarity to let folding flexible stair's upper end follow traditional point face contact, become the face-to-face contact, can place folding flexible stair upper end department and take place to warp, improve its life.
Drawings
FIG. 1 is a schematic view of a stair shown in an extended configuration;
FIG. 2 is an enlarged view of the stair run-out;
FIG. 3 is a schematic view of the folded structure of the staircase;
FIG. 4 is an enlarged view of the folded portion of the staircase;
1-stair section, 2-pedal, 3-upper sliding frame, 301-small through hole, 4-lower sliding frame, 5-upper guide rail groove, 6-lower guide rail groove, 7-push rod motor, 8-spring telescopic pin, 9-waist-shaped groove, 10-transverse pin, 11-hydraulic cylinder and 1101-annular table.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in figures 1-4, the folding telescopic stairway for the instrument vehicle is arranged at a vehicle door, and a storage cavity is arranged below the vehicle door. Folding flexible stair include a plurality of articulated stair festival 1, are provided with footboard 2 on the stair festival 1, folding flexible stair retract the storage cavity when not working, need the during operation, pull out from the storage cavity, then expand each stair festival 1, the people steps on footboard 2 and can get on and off the instrument trolley.
In the scheme, the upper sliding frame 3 is arranged at the upper part of the folding telescopic stair, the lower sliding frame 4 is arranged at the lower part of the folding telescopic stair, and the upper sliding frame and the lower sliding frame are horizontally arranged to realize the extension and retraction of the folding telescopic stair. Correspondingly, there are provided corresponding upper and lower rail grooves 5, 6 in the storage cavity. The upper sliding frame 3 is in sliding fit with the upper guide rail groove 5, and the lower guide rail groove 6 is in sliding fit with the lower sliding frame 4.
Further, in order to guarantee the sliding position and prevent the sliding, waist-shaped grooves 9 are formed in the side walls of the upper guide rail groove 5 and the lower guide rail groove 6, and the upper sliding frame 3 and the lower sliding frame 4 penetrate into the waist-shaped grooves 9 through transverse pins 10 to be in sliding fit with the upper guide rail groove 5. A pressure sensor B is arranged on the wall of the outer end of the waist-shaped groove 9 and is electrically connected with the hydraulic cylinder 11 through a control panel.
Even if the folding telescopic stairway of the instrument vehicle is completely unfolded, the bottom end of the folding telescopic stairway is still a certain distance away from the ground, and the stability is guaranteed due to the fact that the folding telescopic stairway is better stressed.
Furthermore, in order to ensure that the output shaft of the push rod motor 7 can automatically extend out when the folding telescopic stair is opened and can automatically retract when the folding telescopic stair is folded, the manual control is not needed. Therefore, at the hinged position of the stair section 1 of the lowest end of the last but one section and the last but one section, the end surface of the stair section 1 of the last but one section is provided with a spring telescopic pin 8, one end of the spring telescopic pin 8 is exposed out of the end surface, and the other end is provided with a pressure sensor A; the pressure sensor is electrically connected with the push rod motor 7 through a control panel. When the pressure sensor A senses pressure, the push rod motor 7 is started, an output shaft of the push rod motor extends out to be in contact with the ground, and when the pressure sensor A does not sense the pressure, the push rod motor retracts automatically.
When the folding telescopic stairway is unfolded, the bottom of the folding telescopic stairway is supported by arranging the push rod motor 7, but the upper end part of the folding telescopic stairway is still in a movable state, and in order to further improve the stability, the folding telescopic stairway needs to be fixed when being unfolded. Therefore, a large through hole 501 in the vertical direction is formed in the upper wall of the upper guide rail groove 5, and a corresponding small through hole 301 is formed in the upper sliding frame 3; a hydraulic cylinder 11 is arranged above the large through hole 501, an annular table 1101 is arranged on an output shaft of the hydraulic cylinder 11, when the output shaft of the hydraulic cylinder 11 moves downwards, the end of the output shaft penetrates into the small through hole 301, and the annular table 1101 abuts against the upper surface of the upper sliding frame 3, so that fixation is achieved. The design is not only for fixing, but also for the traditional design, the folding telescopic stairway takes the outer end of the guide rail groove as a fulcrum, is lever-shaped, and the top end of the upper end of the folding telescopic stairway is propped against the upper wall of the upper guide rail groove 5, so that the folding telescopic stairway works for a long time, namely the upper end of the folding telescopic stairway is easy to deform, and cannot slide in the guide rail groove; the design of this scheme, the bottom surface that lets the carriage form the face with the bottom of guide rail groove and contact, is difficult to take place to warp, improves the life of folding flexible stair.
In this embodiment, the hydraulic cylinder 11 and the push rod motor 7 are provided with further control lines, which are connected to control buttons arranged in the cab.
Claims (5)
1. The utility model provides an instrument car is with folding flexible stair, folding flexible stair set up in door department, and the door below is provided with storage cavity, folding flexible stair include a plurality of articulated stair festival (1), are provided with footboard (2), its characterized in that on stair festival (1): the folding telescopic stairway is characterized by further comprising an upper sliding frame (3) and a lower sliding frame (4), wherein the upper sliding frame (3) and the lower sliding frame (4) are arranged on two sides of the stair section (1), the upper sliding frame (3) is arranged on the upper portion of the folding telescopic stairway, and the lower sliding frame (4) is arranged in the middle of the folding telescopic stairway;
an upper guide rail groove (5) and a lower guide rail groove (6) are arranged in the storage cavity, the upper sliding frame (3) is in sliding fit with the upper guide rail groove (5), and the lower guide rail groove (6) is in sliding fit with the lower sliding frame (4);
the lower part of the stair section (1) of the first section from the lowest end to the last of the folding telescopic stair is provided with a push rod motor (7), and the end of the push rod motor (7) is in contact with the ground.
2. The foldable telescopic stair for the instrument vehicle as claimed in claim 1, wherein: the hinged part of the stair sections (1) of the first section to the last and the second section to the last at the lowest end of the folding telescopic stair is provided with a spring telescopic pin (8), one end of the spring telescopic pin (8) is exposed out of the end face, and the other end of the spring telescopic pin is provided with a pressure sensor A;
the pressure sensor is electrically connected with the push rod motor (7) through the control panel, and the output shaft of the push rod motor (7) extends out to be contacted with the ground when the pressure sensor A senses pressure.
3. The foldable telescopic stair for the instrument vehicle as claimed in claim 2, wherein: a large through hole (501) in the vertical direction is formed in the upper wall of the upper guide rail groove (5), and a corresponding small through hole (301) is formed in the upper sliding frame (3);
a hydraulic cylinder (11) is arranged above the large through hole (501), an annular table (1101) is arranged on an output shaft of the hydraulic cylinder (11), when the output shaft of the hydraulic cylinder (11) moves downwards, the end head of the output shaft penetrates into the small through hole (301), and the annular table (1101) abuts against the upper surface of the upper sliding frame (3);
waist-shaped grooves (9) are formed in the side walls of the upper guide rail groove (5) and the lower guide rail groove (6).
4. The foldable telescopic stair for the instrument vehicle as claimed in claim 3, wherein: and a pressure sensor B is arranged on the wall of the outer end of the waist-shaped groove (9) and is electrically connected with the hydraulic cylinder (11) through a control panel.
5. The foldable telescopic stair for the instrument vehicle as claimed in claim 4, wherein: the hydraulic cylinder (11) and the push rod motor (7) are also provided with other control routes which are connected with control buttons arranged in a cab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921023912.5U CN210390956U (en) | 2019-07-03 | 2019-07-03 | Folding telescopic stair for instrument vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921023912.5U CN210390956U (en) | 2019-07-03 | 2019-07-03 | Folding telescopic stair for instrument vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210390956U true CN210390956U (en) | 2020-04-24 |
Family
ID=70352227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921023912.5U Expired - Fee Related CN210390956U (en) | 2019-07-03 | 2019-07-03 | Folding telescopic stair for instrument vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210390956U (en) |
-
2019
- 2019-07-03 CN CN201921023912.5U patent/CN210390956U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |