CN215436222U - Overturning step - Google Patents

Abstract

The utility model relates to a turning step which comprises steps and a driving device, wherein the driving device is an air cylinder driving structure, the driving device is used for controlling the turning of the steps, and the driving device comprises a double-acting air cylinder; the double-acting cylinder is additionally provided with two cylinder speed regulating valves which are respectively connected with a rod cavity and a rodless cavity of the double-acting cylinder; when the overturning step is overturned, the air flow velocity flowing out of the double-acting air cylinder is controlled through the air cylinder speed regulating valve, especially when the gravity center is changed, the air cylinder speed regulating valve can always keep the stable operation of the piston rod of the double-acting air cylinder, so that the step is stably overturned, and the stability and the safety in the use process are ensured.

Description

Overturning step

Technical Field

The utility model relates to arrangement of a pedal or a ladder, in particular to a turnover step.

Background

The overturning steps are commonly used for medium and large vehicles such as buses, medical vehicles and the like. Compare and set up the fixed mark time in the car in the tradition, the space in the car has been saved to the appearance of upset mark time to the potential safety hazard has been reduced. However, the application field of the turnover pedal is not limited to medium and large vehicles, and can also be applied to buildings with a certain height difference with the ground, such as blood donation rooms, fixed goods selling rooms, large electrical equipment cabinets and the like.

The turning step and the vehicle using the turning step disclosed in chinese patent application No. CN201420424574.7 disclose a general scheme for the turning step used on the vehicle, and the turning operation is controlled by an electric cylinder. But the running process is lack of a buffer structure, the stepping is relatively stiff in overturning, the use texture is poor, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a turning step, which is used for solving the problems that the existing turning step lacks an effective gas buffer to enable the step to run smoothly, so that the service life is prolonged and the safety is improved.

The utility model adopts the following technical scheme:

a turning step comprises steps and a driving device, wherein the driving device is an air cylinder driving structure and is used for controlling turning of the steps; the driving device comprises a double-acting air cylinder; the double-acting cylinder is additionally provided with two cylinder speed regulating valves which are respectively connected with a rod cavity and a rodless cavity of the double-acting cylinder; the cylinder speed regulating valve is a one-way speed regulating valve with an exhaust throttling structure.

Further, above-mentioned cylinder governing valve opens and is equipped with cylinder trachea, air feed pipe, and the cylinder trachea runs through above-mentioned two effect cylinder outer wall and connects two effect cylinder inner chambers, and air feed pipe passes through trachea and air feeder gas connection, and above-mentioned cylinder trachea entry inboard is attached and is had valve assembly, and this valve assembly is used for the one-way speed limit of cylinder governing valve.

Furthermore, the valve component comprises a valve main body, a valve sheet member and a grid baffle plate, wherein the valve main body is arranged on a double-layer pipe wall of a concentric circle, one end of an inner pipe wall and one end of an outer pipe wall are connected with each other, the other end of the inner pipe wall and the other end of the outer pipe wall are arranged in an open manner, a space formed between the inner pipe wall and the outer pipe wall is a speed-limiting cavity, and the inner pipe wall independently wraps and forms a pipeline as a central pipeline; the speed limiting cavity comprises a head cavity and a tail cavity which are integrally connected, the tail cavity is arranged close to the opening, and the outer pipe wall of the head cavity is provided with at least one through hole which penetrates through the outer pipe wall; the speed limiting cavity is arranged from one end of the inner pipe wall and the outer pipe wall which are mutually connected to gradually increase towards the opening; the valve plate component can be movably accommodated in the speed limiting cavity up and down, and the structure of the valve plate component is embedded with the head cavity; the grid baffle is fixedly connected to the tail of the valve body and used for preventing the valve plate member from falling off.

Furthermore, the cylinder speed regulating valve is additionally provided with an adjusting rod, the adjusting rod penetrates through the end part of the outer end of the air pipe of the cylinder and extends into the air pipe of the cylinder, the outer periphery of the adjusting rod is in threaded connection with the outer end of the air pipe of the cylinder, the end part of the adjusting rod extending into the air pipe of the cylinder extends to the position of the valve component, and one end, close to the inner side of the cylinder speed regulating valve, of the adjusting rod is in a conical arrangement.

Further, the overturning step further comprises an outer framework, the steps and the driving device are mounted inside the outer framework, and the outer framework is used for being mutually fixed with an external mounting environment.

Furthermore, at least one group of limiting brackets is additionally arranged on the step, and one group of two limiting brackets in each group are additionally arranged on two sides of the step; and at least one group of limiting brackets is arranged on the outer framework.

Furthermore, above-mentioned spacing support includes fixed bolster, screw rod, nut and shock pad, sets up the interlude setting that the through-hole is used for the screw rod on the fixed bolster, and the shock pad is fixed to be set up the one end of screw rod and the cooperation of nut makes the screw rod fix on the fixed bolster.

Furthermore, the steps comprise a framework and a metal plate, the framework is assembled by P-shaped pipes, and the metal plate is arranged on the outer side face of the framework.

Furthermore, the metal plate is provided with anti-slip patterns.

Furthermore, the turnover pedal further comprises a detachable handrail, wherein a butterfly bolt is additionally arranged on the step, and the detachable handrail is detachably arranged on the step through the butterfly bolt.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

1. in the overturning process of the overturning step, along with the change of the gravity center position of the step, the gravity action is changed from stopping the overturning of the step to assisting the overturning of the step. Specifically, when the overturning step overturns, the air flow velocity flowing out of the double-acting air cylinder is controlled through the air cylinder speed regulating valve, and particularly when the gravity center changes, the air cylinder speed regulating valve can always keep the stable operation of the piston rod of the double-acting air cylinder, so that the step is stably overturned, and the stability and the safety in the use process are ensured.

2. According to the one-way speed limiting valve, the valve component realizes the one-way speed limiting effect of the one-way speed limiting valve by arranging the valve plate member which slides up and down in the speed limiting cavity with the through hole formed in the outer pipe wall, and the valve main body and the conical valve plate in the structure are made of hard materials such as metal and carbon fiber materials.

3. The combination of the P-shaped framework and the metal plate ensures that the weight of the step is lighter on the premise of ensuring firmness and stability, is favorable for keeping the step in a stable state in the overturning process, and the metal plate on the surface of the step is provided with the anti-slip patterns so that a user is not easy to slip down when stepping on the step.

4. The utility model is provided with the limiting bracket, and when the turning step is completely opened or closed, the limiting bracket reduces the collision strength between the step and the outer framework, enhances the stability of the step after turning is finished, and prolongs the service life of the turning step.

Drawings

FIG. 1 is a schematic structural view of the turn-over step closed state of the present invention.

FIG. 2 is a schematic structural view of the turn-over step of the present invention in an open state.

Fig. 3 is a schematic structural diagram of the cylinder speed regulating valve in the utility model.

FIG. 4 is a schematic view of the valve assembly of the present invention.

Fig. 5 is a schematic structural view of the limiting bracket of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 and 2, the turning step comprises an outer frame 1, a step 2 and a driving device, wherein the outer frame 1 is fixedly installed with an external vehicle body or a building, the outer frame 1 is additionally provided with a rotating shaft 11 for connecting the step 2, and the step 2 is installed in the outer frame 1 and can be turned by taking the rotating shaft 11 as an axis. This embodiment contains exoskeleton 1, and exoskeleton 1 can increase the firm degree that the upset was marked time, but does not set up this upset of exoskeleton 1 and mark time also can normal use, and rotation axis 11 snap-on sets up in external service environment (like car automobile body etc.) promptly, and step 2 carries out the upset operation with rotation axis 11. The driving device is arranged in a cylinder driving structure and is used for controlling the overturning of the step 2. This drive arrangement through cylinder drive structure controls the upset of step 2, generally articulates respectively in exoskeleton 1 and step 2 realization through cylinder main part one end and cylinder piston rod outer end, and this implementation has had the application in the passenger train field of marking time.

As shown in fig. 2, the step 2 is composed of a step-shaped frame 21 and a metal plate 22, the step-shaped frame 21 is formed by welding P-shaped pipes, and the metal plate 22 is disposed on the step-shaped frame 21. The P-shaped pipe is a common hollow metal tubular material on the market, is characterized by light weight and high hardness, and can reduce the weight of the step 2 and ensure the bearing strength when being used for welding the step-shaped framework 21. The metal plate 22 covered on the step-shaped framework 21 is provided with anti-skid patterns, so that the safety of use, turning and stepping is improved.

As shown in fig. 2, the step 2 is provided with a detachable handle 232 which is assembled by at least two butterfly bolts 231. Butterfly bolt 231 is fixed installation setting on step 2, and removable handrail 232 inserts and uses after fixing in butterfly bolt 231 when using. The detachable armrest 232 needs to be detached after the step 2 is opened and before the step 2 is closed.

As shown in fig. 1, 2 and 3, the driving device additionally comprises a double-acting cylinder 3 and a gas supply device, wherein the double-acting cylinder 3 is a double-acting cylinder 3 with a single piston rod structure. The rodless end of the double-acting cylinder 3 is assembled on the outer framework 1 through a rotating shaft rod 32 attached to the double-acting cylinder, and the end part of the outer end of a piston rod of the double-acting cylinder 3 is hinged to the step 2. The double-acting cylinder 3 is hinged to the rotating shaft rod 32, and the rotating shaft rod 32 is fixedly arranged on the outer framework 1. The double-acting cylinder 3 is additionally provided with a cylinder speed regulating valve 31, and a group of two cylinder speed regulating valves 31 with the same structure are respectively arranged at two ends of the double-acting cylinder 3. The cylinder speed regulating valve 31 is used for controlling the flow speed of the air flow, so that the operation of the double-acting cylinder 3 is more stable. The air supply device is communicated with the rod cavity and the rodless cavity of the double-acting cylinder 3 through the cylinder speed regulating valve 31, and the air supply device provides an air source for the double-acting cylinder 3, so that the common knowledge in the fields of passenger cars and cylinder application is omitted here for details.

As shown in fig. 3, the cylinder speed regulating valve 31 is a one-way speed regulating valve with an exhaust throttling structure, that is, when the air flow passes through the cylinder speed regulating valve 31, the flow rate of the air flow in the direction of flowing out of the rod cavity and the rodless cavity is limited, and when the direction of the air flow is reversed, the air flow is not affected. The air cylinder speed regulating valve 31 comprises an air supply pipe 312, an air cylinder pipe 311, a valve component 32 and an adjusting rod 313, the air supply pipe 312 is used for connecting an air supply device, and the air cylinder pipe 311 penetrates through the side wall of the main body of the double-acting air cylinder 3 and is communicated with a rod cavity or a rodless cavity of the double-acting air cylinder 3. The inner end opening of the cylinder air pipe 311 is provided with a valve component 32, and the inner end of the cylinder air pipe 311 is one end of the cylinder air pipe 311 connected with the main body of the double-acting cylinder 3. The adjusting rod 313 is provided at the outer end of the cylinder pipe 311 corresponding to the valve assembly 32.

Referring to fig. 4, the valve assembly 32 includes a valve body, a valve plate member 324 and a grating barrier 325, the valve body is a concentric double-layer pipe wall, the inner pipe wall and the outer pipe wall are connected to each other at the head end, the open end is the tail end of the valve body, and the head end of the valve body is the end inserted into the air pipe 311 of the cylinder. The space formed between the inner pipe wall and the outer pipe wall is a speed limiting cavity 321, and the pipeline formed by independently wrapping the inner pipe wall is a central pipeline 322.

As shown in fig. 4, the speed limiting cavity 321 includes a head cavity 3211 and a tail cavity 3212 integrally connected to each other, the head cavity 3211 is disposed at a head end of the valve body, and the tail cavity 3212 is disposed at a tail end of the valve body. The outer pipe wall of the head cavity 3211 is provided with a plurality of through holes 323, the through holes 323 penetrate through the outer pipe wall, and the speed limiting cavity 321 is gradually enlarged from the head end direction of the valve body to the tail end direction of the valve body.

Referring to fig. 4, the valve plate member 324 is movably received in the speed limiting cavity 321, the valve plate member 324 is engaged with the head cavity 3211, and the grid baffle 325 is fixedly connected to the tail of the valve body to prevent the valve plate member 324 from falling out.

Referring to fig. 3 and 4, when gas flows into the valve assembly 31 from the rod chamber or the rod-less chamber, the gas will drive the valve member 324 to move to the head chamber 3211, and the valve member 324 blocks the through hole 323, so that the gas can only enter the cylinder pipe 311 through the central passage 322. When gas flows into the rod cavity or the rodless cavity from the cylinder gas pipe 311, the valve plate member 324 is pushed into the tail cavity 3212 by the gas flow, and because the valve plate member 324 is smaller than the tail cavity 3212, the gas can flow into the rod cavity or the rodless cavity through the central passage 322 and can also flow into the rod cavity or the rodless cavity through the speed limiting cavity 321. The structure realizes the one-way speed limiting effect of the cylinder speed regulating valve 31.

As shown in fig. 3, the adjusting rod 313 penetrates the end of the outer end of the cylinder pipe 311 and extends into the cylinder pipe 311, the outer circumference of the adjusting rod 313 is screwed to the outer end of the cylinder pipe 311, and the end of the adjusting rod 313 extending into the cylinder pipe 311 extends to the position of the valve assembly 32. The end of the adjusting rod 313 close to the inner side of the cylinder speed regulating valve 31 can be controlled to be close to the central pipeline 322 of the tubular structure of the valve component 32 by rotating the adjusting rod 313, and the end of the adjusting rod 313 close to the inner side of the cylinder speed regulating valve 31 is arranged in a conical shape, so that the closer the adjusting rod 313 is to the valve component 32, the greater the air flow restriction on the central pipeline 322 is until the central pipeline 322 is completely blocked. The flow velocity of the air flow between the cylinder speed control valve 31 and the double-acting cylinder 3 can be adjusted by adjusting the adjusting lever 313, and the adjustment has a small influence on the air flow flowing to the double-acting cylinder 3 and a large influence on the air flow flowing to the cylinder speed control valve 31.

Referring to fig. 1 and 2, the turn-over step is provided with an electric lock as in the conventional art. The electric lock comprises a lock cylinder member 121 and a bolt member 122, wherein the lock cylinder member 121 and the bolt member 122 are respectively arranged on an outer framework 1 and a step 2 as a conventional technical means, and the closed state of a turning step is stabilized by mutually locking the lock cylinder member 121 and the bolt member. Wherein the cylinder member 121 may also be arranged as a pneumatic lock, the unlocking of the cylinder member 121 being controlled directly by the air supply.

As shown in fig. 1 and 2, the turning step further includes a limiting bracket 24, the limiting bracket 24 includes a set of two limiting brackets, and the same set of two limiting brackets 24 are respectively disposed on two sides of the step 2, in this embodiment, the two sets of limiting brackets 24 are fixed on two sides of the step 2, and one set of limiting brackets is fixed on the exoskeleton 1.

Referring to fig. 4, the spacing bracket 24 includes a fixing frame 241, a nut 242, a screw 243, and a shock-absorbing pad 244. The fixing frame 241 is used for fixedly mounting the limiting bracket 24 on the step 22 or the exoskeleton 11, the shock pad 244 is attached to the head of the screw 243, and is fixed on the fixing frame 241 by matching with the screw 243 and the bolt of the nut 242, and the shock pad 244 is made of rubber or other materials capable of achieving a shock absorption effect, such as plastic, rubber, leather products and the like.

As shown in fig. 1 and 2, when the step 2 is to be turned over to a fully opened state, the shock absorbing pads of the limiting brackets 24 fixed on both sides of the step 2 contact the outer frame 1 first, so as to achieve the shock absorbing effect. When the step 2 is to be turned over to a completely closed state, the step 2 contacts with the damping pad of the limiting bracket 24 arranged on the outer framework 1 to achieve the same damping purpose. Meanwhile, when the turning step is in a closed state, the contact position of the step 2 and the outer framework 1 is provided with a sealing rubber strip, and the sealing rubber strip is preferably used for reinforcing a core rubber strip. The joint strip plays sealed effect, makes the inside environment relatively stable of the upset mark time, avoids steam, dust to get into in the upset mark time of closing. Meanwhile, the sealing rubber strip also plays a role in buffering the collision between the step 2 and the outer framework 1, and the friction collision caused by bumping is reduced in the driving process of automobiles.

As shown in fig. 1 to 4, the step 2 of the present embodiment is integrally fitted in a use carrier in the outside when not in use. When the step 2 needs to be used, the electric lock is unlocked, the piston rod of the double-acting air cylinder is controlled to extend out through the air supply device, and the step 2 begins to turn outwards. The step 2 can change at the upset in-process focus gradually, under the effect of cylinder speed governing valve 31, can reduce step 2 because the jolt of focus change at the upset in-process, makes step 2 upset process comparatively gentle. When the step 2 is completely turned over and opened, the limiting bracket 24 fixed on the step 2 can touch the outer framework 1, so that the step 2 stops turning over. If the detachable armrest 232 is needed, the detachable armrest 232 is inserted into the butterfly bolt 231 for fixed use. Similarly, when the step 2 needs to be retracted, the butterfly bolt 231 is firstly unlocked and the detachable armrest 232 is separated, and then the step 2 is retracted into the carrier through the reverse operation of the air supply device, so that the electric lock is locked.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims (10)

1. A turning step comprises steps and a driving device, wherein the driving device is an air cylinder driving structure and is used for controlling turning of the steps; the method is characterized in that: the driving device comprises a double-acting air cylinder; the double-acting cylinder is additionally provided with two cylinder speed regulating valves which are respectively connected with a rod cavity and a rodless cavity of the double-acting cylinder; the cylinder speed regulating valve is a one-way speed regulating valve with an exhaust throttling structure.

2. The inversion step of claim 1, wherein: the cylinder governing valve is opened and is equipped with cylinder trachea, air feed pipe, and the cylinder trachea runs through double-acting cylinder outer wall connects double-acting cylinder inner chamber, and air feed pipe passes through trachea and air feeder gas connection, cylinder trachea entry inboard is attached and is had valve subassembly, and this valve subassembly is used for the one-way speed limit of cylinder governing valve.

3. The inversion step of claim 2, wherein: the valve component comprises a valve main body, a valve sheet member and a grid baffle, wherein the valve main body is arranged by double-layer pipe walls of concentric circles, one end of each of an inner pipe wall and an outer pipe wall is connected, the other end of each of the inner pipe wall and the outer pipe wall is arranged in an open manner, a space formed between the inner pipe wall and the outer pipe wall is a speed-limiting cavity, and a pipeline independently formed by wrapping the inner pipe wall is a central pipeline; the speed limiting cavity comprises a head cavity and a tail cavity which are integrally connected, the tail cavity is arranged close to the opening, and the outer pipe wall of the head cavity is provided with at least one through hole which penetrates through the outer pipe wall; the speed limiting cavity is arranged from one end of the inner pipe wall and the outer pipe wall which are mutually connected to each other and gradually increased towards the opening; the valve plate component can be movably accommodated in the speed limiting cavity up and down, and is embedded with the head cavity; the grid baffle is fixedly connected to the tail of the valve body and used for preventing the valve plate member from falling off.

4. The inversion step of claim 2, wherein: the cylinder speed regulating valve is additionally provided with an adjusting rod, the adjusting rod penetrates through the end part of the outer end of the air pipe of the cylinder and extends into the air pipe of the cylinder, the outer periphery of the adjusting rod is in threaded connection with the outer end of the air pipe of the cylinder, the end part of the adjusting rod, which extends into the air pipe of the cylinder, extends to the position where the valve component is arranged, and one end, close to the inner side of the cylinder speed regulating valve, of the adjusting rod is arranged in a conical shape.

5. The inversion step of claim 1, wherein: still include the exoskeleton, the step with drive arrangement all installs inside the exoskeleton, and this exoskeleton is used for mutually fixing with the external installation environment.

6. The inversion step of claim 5, wherein: at least one group of limiting brackets is additionally arranged on the step, and one group of two limiting brackets in each group are additionally arranged on two sides of the step; and at least one group of limiting brackets is arranged on the outer framework.

7. The inversion step of claim 6, wherein: the limiting support comprises a fixing support, a screw rod, a nut and a shock pad, a through hole is formed in the fixing support and used for penetrating and setting of the screw rod, and the shock pad is fixedly arranged at one end of the screw rod and matched with the nut to enable the screw rod to be fixed on the fixing support.

8. The inversion step of claim 1, wherein: the step comprises a framework and a metal plate, the framework is assembled by P-shaped pipes, and the metal plate is arranged on the outer side surface of the framework.

9. The inversion step of claim 8, wherein: the metal plate is provided with anti-slip patterns.

10. The inversion step of claim 1, wherein: still including dismantling the handrail, attach butterfly bolt on the step, can dismantle the handrail and pass through butterfly bolt detachably and install on the step.

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