CN202866633U - Horizontal staircase with variable-amplitude steps - Google Patents
Horizontal staircase with variable-amplitude steps Download PDFInfo
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- CN202866633U CN202866633U CN 201220561178 CN201220561178U CN202866633U CN 202866633 U CN202866633 U CN 202866633U CN 201220561178 CN201220561178 CN 201220561178 CN 201220561178 U CN201220561178 U CN 201220561178U CN 202866633 U CN202866633 U CN 202866633U
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- luffing
- parallel
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- yongping
- fork
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Abstract
The utility model relates to a horizontal staircase with variable-amplitude steps, comprising movable steps and side plates on both sides, wherein the side plates are longitudinally connected with two ends of the movable steps. The horizontal staircase with variable-amplitude steps is characterized by further comprising a power mechanism, a transmission mechanism, a detection mechanism and an implementation mechanism; the steps are connected into parallelogram structures; during variable-amplitude movement, the upper step, the lower step and the center shaft of the upper step and the lower step are parallel to a connection rod; one end of a hydraulic cylinder in the power mechanism is articulated with a support rod of the hydraulic cylinder of the steps, and the other end is articulated with a step which is adjacent to the hydraulic cylinder; the detection device is arranged on a step; after the sensor of the detection device detects the operation of a variable-amplitude mechanism, a hydraulic pump in the power mechanism is made to work through a variable-amplitude control circuit, an electromagnetic directional valve is driven according to the direction of inclination to control the hydraulic cylinder to move, and the force is transferred to each step through four parallel connection bars, thus the steps of the staircase are made to be parallel to the horizontal plane. The horizontal staircase with variable-amplitude steps is simple in structure and is practical in function. The steps of the horizontal staircase are made to be parallel so that people can walk conveniently and conformably on the steps and the safety accident can be avoided.
Description
Technical field
The utility model relates to a kind of stair, particularly a kind of step Yongping formula stair that are installed on the jib lubbing mechanism.
Background technology
At present, the stair that are installed on the jib lubbing mechanism are widely used on the various devices such as mine equipment, loose unpacked material machinery, but but right and wrong self-adjustable step stair substantially all.This traditional stair, in the running of jib lubbing mechanism, but non-self-adjustable step can be along with the luffing motion of jib lubbing mechanism, lose parallel with horizontal plane, and have a certain degree with horizontal plane shape, when the people walks thereon, very difficult, and very inconvenient.Particularly when work high above the ground, if staff's walking thereon, accidentally just life danger might occur, cause security incident.
In view of this, the utility model makes every effort to take be installed in technical scheme on the jib lubbing mechanism with the self-adjustable step, it is parallel with horizontal plane to make step regulate voluntarily step with the luffing motion of luffing mechanism, and then avoid above danger, make people's just equally steady safety of stair as ground of walking thereon.
The utility model content
The utility model is intended to solve traditional stair on the jib lubbing mechanism can not realize problem parallel with horizontal plane, that cause security incident to occur easily, for mechanic provides a kind of step self-regulated, the people walked feel comfortably cool thereon, Yongping formula stair of safety.
The utility model will be realized by following technical solution:
A kind of luffing step Yongping formula stair, comprise movable step, two side plates that vertically link to each other with the step two ends, it is characterized in that, also comprise actuating unit, transmission mechanism, testing agency and executing agency, step is connected the employing parallelogram sturcutre with step, on when luffing moves, get out of a predicament or an embarrassing situation and step central axis and connecting rod are in parastate all the time, one end of the hydraulic cylinder in the actuating unit and the hydraulic cylinder support bar of stair are articulated and connected, the other end is articulated and connected with the stairway step close with it, checkout gear is installed on the step of stair, its sensor detects the operation of jib lubbing mechanism, make hydraulic pump works in the actuating unit by the luffing control circuit, drive solenoid operated directional valve control hydraulic cylinder according to incline direction, by parallel four connecting rods power is delivered to each step again, realizes the parallel of stairway step and horizontal plane.
Described actuating unit is selected Driven by Hydraulic Cylinder, as the power source of stairway step self-regulated, regulates the parallel of step and level.This actuating unit comprises fuel tank, hydraulic cylinder, solenoid operated directional valve, overflow valve, hydraulic pump, hydraulic lock, cleaner and annex, and fuel tank is used for oil in reserve, and the oil-in of hydraulic pump has cleaner, utilizes the insoluble impurities in the porous transmissibility material trapped fluid force feed; For preventing the too high hydraulic system of damaging of hydraulic system pressure, oil-out at hydraulic pump connects overflow valve by pipeline, the overflow valve action maintains in the setting range system pressure by overflow when system pressure surpasses setting pressure, and the hydraulic oil that overflows directly flows back to fuel tank; Hydraulic pump pumps hydraulic oil continuously, makes mechanical energy be converted to pressure energy and kinetic energy, and comes the direction of regulator solution stream by solenoid operated directional valve, and then drives hydraulic cylinder and do and stretch cylinder or contracting cylinder moves; Hydraulic lock is used for pressurize, when jib lubbing mechanism does not move, avoids release and loses the parallel of stairway step and horizontal plane.When jib lubbing mechanism moves, detect step and horizontal plane by testing agency and lose parallelly, drive hydraulic pump and solenoid operated directional valve by electrical control, make step recover parallel with horizontal plane.
Described testing agency, its sensor comprises fork sensor, obliquity sensor, encoder, detect operation because of jib lubbing mechanism step is lost when parallel with horizontal plane, in succession make actuating unit, transmission mechanism and executing agency's work by the luffing control circuit.The fork sensor comprises left and right two approach switchs and a mechanical fork, the upper end of fork is fixed on the crossbeam of sensor device by the fork axle, fork deadweight vertical level, whole device place in the enclosure space of base plate, cover plate and left and right side plate composition.When jib lubbing mechanism was static, the fork in the testing agency was under action of gravitation, all the time perpendicular to horizontal plane; When jib lubbing mechanism down moved, the right approach switch of fork and front approached, and made right approach switch action; And when jib lubbing mechanism up moved, the left approach switch of fork and back approached, and made left approach switch action.This simple type checkout gear that designs except considering cost, testing agency also can adopt obliquity sensor, encoder etc., and washability is many.
Described executing agency is parallel four-bar linkage, connects with connecting rod between the adjacent two movable steps, and upper and lower connecting rod is parallel to each other or is in the same axis, when luffing moves, take the connecting rod central axis as the axle center transferring power.Because the monopolizing characteristic of quadric chain, parallel four-bar linkage make two planes forever parallel, but this just can reach the regulatory function of luffing stair when operation.The work of executing agency is controlled by the luffing control circuit, when jib lubbing mechanism moves, step can lose parallel relation with horizontal plane, the main contactor of hydraulic pump can get electric in the actuating unit at this moment, left and right approach switch can be sensed this state, the contact by often open become normally closed, thereby it is electric that the auxiliary reclay of connecting respectively with left and right approach switch is got, constant open contact becomes constant close contact, and then it is electric that the solenoid operated directional valve of being controlled respectively by auxiliary reclay is got, regulate the angle of step, realize the parallel of step and horizontal plane with this; Out of service when jib lubbing mechanism, when step reached parallel with horizontal plane, left and right approach switch was failure to actuate, hydraulic pump and solenoid operated directional valve also quit work, come pressurize by the hydraulic lock in the actuating unit this moment, prevents release under Action of Gravity Field, and lose parallel with horizontal plane.
Described transmission mechanism adopts hydraulic pressure hydraulic power, loses when parallel when checkout gear detects step and horizontal plane, and the luffing control circuit can drive solenoid operated directional valve control hydraulic cylinder, by four connecting rod transferring power, makes step recovery horizontal level.Transmission mechanism is by Driven by Hydraulic Cylinder, when jib lubbing mechanism is done the luffing motion, the hydraulic pump switch can be closed, make hydraulic pump works, the stairway step that is installed on the jib lubbing mechanism can be along with the luffing motion of jib lubbing mechanism, and lose parallel with horizontal plane, be contained in that checkout gear on the stair can detect stairway step and horizontal plane loses parallel relation this moment, thereby make a left side, right approach switch action, by often open become normally closed, with a left side, the auxiliary reclay that right approach switch is connected respectively can be connected, and then drives the motion that solenoid operated directional valve is controlled hydraulic cylinder, makes stairway step return to former horizontal level; When jib lubbing mechanism continues operation, can repeat above motion, realize the parallel of stairway step and horizontal plane.
Innovative point of the present utility model mainly is, on the basis of conventional desktop stair, set up actuating unit, transmission mechanism, testing agency and executing agency's four major parts, incorporate the principle of automation and sensor, make the stair luffing that is installed on the jib lubbing mechanism adjustable, the realization stairway step is parallel with horizontal plane, and is convenient, comfortable when mechanic is walked thereon, avoids the generation of human casualty accident.The utility model is simple in structure, and practical function is cheap, and long service life adopts hydraulic drive to combine with machine driving, and speed, moment of torsion and power can be regulated continuously, can commutate rapidly, realize overload protection.
Description of drawings
The a part of accompanying drawing that consists of the application is used to provide further understanding of the present utility model, and itself and embodiment do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 overall construction drawing.
Fig. 2 transmission principle figure.
Fig. 3 actuating unit schematic diagram.
Fig. 4 testing agency schematic diagram.
Fig. 5 luffing control circuit figure.
Label declaration: 1, hydraulic cylinder support bar; 2, step central axis; 3, connecting rod; 4, pin; 5, step; 6, hydraulic cylinder; 7, sensor; 8, base plate; 9, right approach switch; 10, side plate; 11, fork; 12, cover plate; 13, fork axle; 14, crossbeam; 15, left approach switch; 16, fuel tank; 17, overflow valve; 18, solenoid operated directional valve; 19, hydraulic cylinder; 20, hydraulic lock; 21, hydraulic pump; 22, cleaner; 23, auxiliary reclay; 24, main contactor; 25, hydraulic pump switch.
The specific embodiment
Following examples are intended to illustrate the utility model rather than to further restriction of the present utility model.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of luffing step Yongping formula stair, comprise movable step (5), two side plates that vertically link to each other with the step two ends, change the structural shape of traditional fixed pattern stair, set up actuating unit, transmission mechanism, testing agency and executing agency, step is connected the employing parallelogram sturcutre with step, on when luffing moves, get out of a predicament or an embarrassing situation (5) and step central axis and connecting rod are in parastate all the time, the hydraulic cylinder support bar (1) of one end of the hydraulic cylinder in the stair actuating unit (19) and stair is articulated and connected, the other end is articulated and connected with the stairway step (5) close with it, checkout gear is installed on the stair, its sensor (7) detects the operation of jib lubbing mechanism, by the luffing control circuit hydraulic pump (21) in the actuating unit is worked, drive solenoid operated directional valve (18) control hydraulic cylinder (6) motion according to incline direction, by parallel four connecting rods power is delivered to each step again, realizes the parallel of stairway step and horizontal plane.
Actuating unit is comprised of fuel tank (16), hydraulic cylinder (6), solenoid operated directional valve (18), overflow valve (17), hydraulic pump (21), hydraulic lock (20), cleaner (22) and annex, fuel tank (16) is used for oil in reserve, the oil-in of hydraulic pump (21) has cleaner (22), utilizes the insoluble impurities in the porous transmissibility material trapped fluid force feed; Hydraulic pump (21) connects overflow valve (17) by pipeline, and when system pressure surpassed setting pressure, by the overflow valve overflow, the hydraulic oil that overflows directly flowed back to fuel tank (16); Hydraulic pump (21) is released hydraulic oil continuously, makes mechanical energy be transformed to pressure energy and kinetic energy, and changes the direction of liquid stream by solenoid operated directional valve (18), and then promotes hydraulic cylinder (6) and do and stretch cylinder or the contracting cylinder moves; Hydraulic lock (20) is used for pressurize, when jib lubbing mechanism does not move, avoids release and loses the parallel of stairway step and horizontal plane.When jib lubbing mechanism moves, detect step and horizontal plane by testing agency and lose parallelly, drive hydraulic pump (21) and solenoid operated directional valve (18) by electrical control, make step recover parallel with horizontal plane.
Testing agency is the fork sensor, mainly consisted of by left approach switch (15), right approach switch (9) and a mechanical fork (11), the upper end of fork (11) is fixed on the crossbeam (14) of sensor device by fork axle (13), fork (11) deadweight vertical level, whole device place in the enclosure space of base plate (8), cover plate (12) and left and right side plate (10) composition.When jib lubbing mechanism was static, the fork in the testing agency (11) was under action of gravitation, all the time perpendicular to horizontal plane; When jib lubbing mechanism down moved, fork (11) approached with the right approach switch (9) of front, and makes right approach switch (9) action; And when jib lubbing mechanism up moved, fork (11) approached with the left approach switch (15) of back, and made left approach switch (15) action.
Executing agency is parallel four-bar linkage, connect with connecting rod (3) between the adjacent two movable steps (5), connecting rod (3) is connected with pin (4) with step (5), upper and lower connecting rod (3) is parallel to each other or is in the same axis, when luffing moves, take connecting rod central axis (2) as the axle center transferring power.The work of executing agency is controlled by the luffing control circuit, SQ1, SQ2 is left approach switch (15) and right approach switch (9), when jib lubbing mechanism moves, step (5) can lose parallel relation with horizontal plane, the main contactor KM1(24 of hydraulic pump this moment (21)) must be electric, SQ1(15), SQ2(9) can sense this state, the contact by often open become normally closed, thereby make auxiliary reclay (23) KA1 or KA2 get electric, constant open contact becomes constant close contact, and then it is electric that solenoid operated directional valve (18) YV1 or YV2 are got, and the angle of regulating step (5) realizes the parallel of step (5) and horizontal plane with this.When jib lubbing mechanism out of service, when step (5) reaches parallel with horizontal plane, left approach switch SQ1(15) or right approach switch SQ2(9) be failure to actuate, hydraulic pump (21) also quits work with solenoid operated directional valve (18), come pressurize by hydraulic lock (20) this moment, prevent release under Action of Gravity Field, and lose parallel with horizontal plane.
Transmission mechanism adopts hydraulic pressure hydraulic power, driven by hydraulic cylinder (19), when jib lubbing mechanism is done the luffing motion, hydraulic pump switch (25) SB1 can be closed, hydraulic pump (21) is worked together, the stairway step (5) that is installed on the jib lubbing mechanism can be along with the luffing motion of jib lubbing mechanism, and lose parallel with horizontal plane, being contained in sensor (7) on the stair this moment can detect stairway step (5) and lose parallel relation with horizontal plane, thereby make the action of left approach switch (15) or right approach switch (9), by often open become normally closed, with a left side, the auxiliary reclay that right approach switch is connected respectively (23) KA1 or KA2 can be connected, and then drive the motion that solenoid operated directional valve (18) is controlled hydraulic cylinder (19), make stairway step (5) return to former horizontal level; When jib lubbing mechanism continues operation, can repeat above motion, realize the parallel of stairway step (5) and horizontal plane.
Luffing step Yongping formula stair under this embodiment are installed on the jib lubbing mechanism, can make step along with the motion of jib lubbing mechanism, automatically regulate the parallel of stairway step (5) and horizontal plane, when the people walks in the above, can feel comfortable, safety.
Claims (10)
1. luffing step Yongping formula stair, comprise movable step, two side plates that vertically link to each other with the step two ends, it is characterized in that, also comprise actuating unit, transmission mechanism, testing agency and executing agency, step is connected the employing parallelogram sturcutre with step, on when luffing moves, get out of a predicament or an embarrassing situation and step central axis and connecting rod are in parastate all the time, one end of the hydraulic cylinder in the actuating unit and the hydraulic cylinder support bar of stair are articulated and connected, the other end is articulated and connected with the stairway step close with it, checkout gear is installed on the step of stair, its sensor detects the operation of jib lubbing mechanism, make hydraulic pump works in the actuating unit by the luffing control circuit, drive solenoid operated directional valve control hydraulic cylinder according to incline direction, by parallel four connecting rods power is delivered to each step again, realizes the parallel of stairway step and horizontal plane.
2. a kind of luffing step according to claim 1 Yongping formula stair, it is characterized in that described actuating unit comprises hydraulic cylinder, solenoid operated directional valve, hydraulic pump, hydraulic lock, cleaner, hydraulic pump is released hydraulic oil, generate pressure energy, come the direction of regulator solution stream by solenoid operated directional valve, and then drive hydraulic cylinder and do and stretch cylinder or contracting cylinder moves, pressurize when hydraulic lock is not moved at jib lubbing mechanism.
3. a kind of luffing step according to claim 1 Yongping formula stair, it is characterized in that described testing agency, its sensor comprises fork sensor, obliquity sensor, encoder, when detecting the operation of jib lubbing mechanism, in succession make actuating unit, transmission mechanism and executing agency's work by the luffing control circuit.
4. a kind of luffing step according to claim 1 Yongping formula stair, it is characterized in that described executing agency is parallel four-bar linkage, connect with connecting rod between the adjacent two movable steps, upper and lower connecting rod is parallel to each other or is in the same axis, when luffing moves, take the step central axis as the axle center transferring power.
5. a kind of luffing step according to claim 1 Yongping formula stair, it is characterized in that described transmission mechanism adopts hydraulic pressure hydraulic power, when detecting step and horizontal plane, checkout gear loses when parallel, the luffing control circuit can drive solenoid operated directional valve control hydraulic cylinder, by four connecting rod transferring power, make step recover horizontal level.
6. a kind of luffing step according to claim 2 Yongping formula stair, the oil-in that it is characterized in that described hydraulic pump has cleaner, utilize the insoluble impurities in the porous transmissibility material trapped fluid force feed, oil-out at hydraulic pump connects overflow valve by pipeline, the overflow valve action maintains in the setting range system pressure by overflow when system pressure surpasses setting pressure.
7. a kind of luffing step according to claim 2 Yongping formula stair is characterized in that described solenoid operated directional valve, and the direction of regulator solution stream drives hydraulic cylinder and does and stretch cylinder or contracting cylinder moves.
8. a kind of luffing step according to claim 3 Yongping formula stair, it is characterized in that described fork sensor comprises left and right approach switch and mechanical fork, the upper end of fork is fixed on the crossbeam of sensor device by the fork axle, fork deadweight vertical level, when jib lubbing mechanism down moves, fork and right approach switch approach, and make right approach switch action; When jib lubbing mechanism up moved, fork and left approach switch approached, and made left approach switch action.
9. according to claim 1 or 3 or 5 described a kind of luffing step Yongping formula stair, it is characterized in that described luffing control circuit, when jib lubbing mechanism moves, the main contactor of hydraulic pump can get electric, the left side of sensor, right approach switch can be sensed stairway step and lose parallel with horizontal plane, the contact by often open become normally closed, make and a left side, the auxiliary reclay that right approach switch is connected respectively gets electric, constant open contact becomes constant close contact, and then it is electric that the solenoid operated directional valve of being controlled respectively by auxiliary reclay is got, regulate the angle of step, realize the parallel of step and horizontal plane with this; Out of service when jib lubbing mechanism, when step reached parallel with horizontal plane, left and right approach switch was failure to actuate, hydraulic pump and solenoid operated directional valve also quit work, come pressurize by the hydraulic lock in the actuating unit this moment, prevents release under Action of Gravity Field, and lose parallel with horizontal plane.
10. a kind of luffing step according to claim 8 Yongping formula stair is characterized in that described fork sensor, and whole device places in the enclosure space that base plate, cover plate and left and right side plate form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561178 CN202866633U (en) | 2012-10-30 | 2012-10-30 | Horizontal staircase with variable-amplitude steps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561178 CN202866633U (en) | 2012-10-30 | 2012-10-30 | Horizontal staircase with variable-amplitude steps |
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| Publication Number | Publication Date |
|---|---|
| CN202866633U true CN202866633U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561178 Expired - Fee Related CN202866633U (en) | 2012-10-30 | 2012-10-30 | Horizontal staircase with variable-amplitude steps |
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| Country | Link |
|---|---|
| CN (1) | CN202866633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877780A (en) * | 2012-10-30 | 2013-01-16 | 湖南长重机器股份有限公司 | Amplitude-variable step permanent flat type stair |
-
2012
- 2012-10-30 CN CN 201220561178 patent/CN202866633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877780A (en) * | 2012-10-30 | 2013-01-16 | 湖南长重机器股份有限公司 | Amplitude-variable step permanent flat type stair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |