WO2010115317A1

WO2010115317A1 - Step route structure for controlling folding and unfolding of foldable steps

Info

Publication number: WO2010115317A1
Application number: PCT/CN2009/071920
Authority: WO
Inventors: 陈烨; 袁华山
Original assignee: 苏州市申龙电梯有限公司
Priority date: 2009-04-09
Filing date: 2009-05-22
Publication date: 2010-10-14
Also published as: CN101537964A

Abstract

A step route structure for controlling the folding and unfolding of foldable steps comprises a main wheel rail (1), an auxiliary wheel control rail (2), a folding control rail (3) and a stopper rail (4) that pushes a latch hook stopper (9a) in the direction of a releasing lock of a latch hook (8a). An inner lateral surface of the auxiliary wheel control rail (2) facing the foldable steps is provided with a rail groove (24) that is matched with an auxiliary wheel (2a) of the foldable steps. An inner lateral surface of the folding control rail (3) is provided with a control pin sliding groove (34) that is matched with a support arm control pin (7a) of the foldable steps. The stopper rail (4) is provided opposite to the latch hook stopper (9a) of the foldable steps. The structure can control the folding and unfolding of the foldable steps, and ensures the surfaces of the steps maintain a horizontal state as the steps fold and unfold. The structure has high load-bearing capacity, and is reliable, simple and easy to operate.

Description

Instructions Controlling the ladder structure of the foldable step folding and snagging Controlling the folding ladder step and opening the ladder structure

[1] Control of collapsible step folding and open ladder structure

[2] Technical field

[3] The present invention relates to a ladder structure for controlling folding and opening of a foldable step.

[4] Background Art

[5] In the industry for the production of escalators, the Chinese Patent No.: 200720075427.3 proposes a folding escalator step, the main structure of which is shown in Figures 1 to 4, including the stepped pedal 3a, which is fixed by the axle a step main wheel la on the bottom side of the stepped step 3a, a swing arm _4a whose one end is pivotally connected to the axle of the step main wheel la, a step auxiliary wheel 2a fixed to the other end of the swing arm _4a by the axle, one end and the bottom of the stepped pedal 3a a pivoting arm 5a at one side, a sliding shaft 6a provided at the other end of the arm 5a, and an arm control pin 7a. The swing arm 4a is provided with a curved chute 10a for guiding and restricting the sliding of the sliding shaft 6a. The hook auxiliary wheel 2a is further provided with a hook lock 8a for hooking the slide shaft 6a and a hook lock block 9a integrally provided with the hook lock 8a. When the hook lock 8a is released from the hook of the slide shaft 6a, the hook lock 8a is released. The lock hook 8a and the lock hook block 9a have a restoring force that tends to rotate in the hook direction. The collapsible step runs in three states throughout the ladder: 1. fully open, as shown in Figure 1; 2. from open to folded intermediate, as shown in Figure 2; 3. fully folded, As shown in Figure 3. The folding step is turned on the ladder road and the lower end is a translational steering mode, so the step must complete a conversion process from full opening to full folding or from full folding to full opening in a certain stroke of the ladder. The main functional purpose of the step is: When the step is run from the inclined section of the ladder to the lower horizontal section, the step needs to be changed from the fully open state to the fully folded state. Similarly, when the step is run by the lower horizontal section of the ladder During the sloping section, the step needs to be changed from the fully folded state to the fully open state, and in the whole process of the transition between the two states of the step, it is always necessary to keep the stepped pedal surface horizontal. In order to achieve this, it is necessary to have a structure or mechanism to control the change of the step opening and closing angles during the folding step transition, and at the same time, the step is still imparted to the step in the process of folding and opening the transition.

[6] Summary of the invention

[7] It is an object of the present invention to provide a ladder structure for controlling foldable step folding and opening, which can be controlled The foldable steps are folded, opened, and the stepped pedal surface is always horizontal and load-bearing during folding and opening of the collapsible step. The structure is reliable, the method is simple and easy.

[8] The technical solution of the present invention is: a ladder structure for controlling the folding and opening of the foldable step, comprising a main wheel guide rail, a secondary wheel control rail, a folding control rail, and a hook lock for releasing the lock direction of the lock hook The collision block guide rail, wherein the main wheel guide rail is exactly the same as the ordinary escalator step main wheel guide rail, and the function thereof is to guide the step runner to run according to the normal ladder path; the auxiliary wheel control rail is disposed toward the inner side of the foldable step The rail groove of the stepped auxiliary wheel is folded, and the upper and lower sides of the groove have limited requirements for the operation of the auxiliary wheel. The inner side of the folding control rail is provided with a control pin chute slidingly engaged with the arm control pin of the foldable step, the bumper rail corresponding to the position of the hook lock block of the foldable step.

[9] A further technical solution of the present invention is: the ladder structure is located between the inclined working section ladder and the horizontal working section ladder.

[10] The auxiliary wheel control rail comprises a horizontal transition straight section smoothly connected with the auxiliary wheel guide of the horizontal working section ladder, a inclined transition curve section smoothly connected with the auxiliary wheel guide of the inclined working section ladder, and a horizontal transition straight line A folded working curve segment with a downward curvature that is smoothly transitioned between the segment and the oblique transition curve segment. The horizontal position of the horizontal transition straight section is equal to the main wheel guide rail; the folding working curve section is smoothly connected by a plurality of quadratic curves, and the two ends of the curve consider the starting speed and the speed direction change of the follower Specially designed to cause the flexible impact on the guide rail. The design of the middle end of the curve should take into account the change of the swing control of the step control arm. The angular acceleration of the swing arm should not be too large, so as not to cause the foldable step. Through the folding area, the phenomenon is not smooth enough, the noise is increased, etc.; the inclined transition curve section is the ladder curve of the normal operation of the step after the foldable step is fully opened, and is also a transition curve ready to enter the folding work.

[11] The horizontal control section and the inclined section corresponding to the horizontal transition straight section and the inclined transition curve section of the auxiliary wheel control rail respectively at the two ends of the folding control rail, and the upper ends of the folding control rail are smoothly connected with the upper arch Curve segment. Folding control rails are used to control the tension and angle of the arms of the collapsible steps to ensure that the stepped pedal faces are always level during folding or opening operations, and also ensure that the steps are load-bearing during the process.

[12] The bumper rail is located inside the inclined transition curve section of the auxiliary wheel control rail, and the bump rail has lower ends than the hook lock block and a middle portion higher than the hook lock block, the two ends and the middle portion a smooth transition between the songs The two ends of the bumper rail are respectively located on the front side and the rear side of the turning portion of the inclined section of the folding control rail and the curved section. The folding and opening of the foldable step needs to be restricted by a hook lock. When the step needs to be folded, the hook lock is opened in advance, and the step can enter the folded state; when the step is from the folded state to the fully open state, the hook lock needs the step folding mechanism. Locked, the ladder can enter the inclined section of the ladder for safe operation. The bumper rails can be controlled to open and close the hook locks when the foldable steps are in position.

[13] The advantages of the invention are:

[14] 1. The present invention allows the foldable step to automatically complete the transition from fully folded to fully open or from fully open to fully folded on the ladder, making the use of the collapsible step more convenient.

[15] 2. The combination of the main wheel guide rail, the auxiliary wheel control rail and the folding control rail of the invention enables the stepped pedal surface to be horizontal and has a bearing capacity and a reliable structure during the folding and opening process.

[16] BRIEF DESCRIPTION OF THE DRAWINGS

[17] Figure 1 is a schematic view of the foldable step open state;

[18] Figure 2 is a schematic view of the intermediate state of the foldable step opening and folding;

[19] Figure 3 is a schematic view of the foldable step folding state;

[20] Figure 4 is a left side view of Figure 1;

Figure 5 is a top plan view showing a specific embodiment of the present invention;

[22] Figure 6 is a cross-sectional view taken along line A-A of Figure 5;

[23] Figure 7 is a cross-sectional view of the B-B of Figure 5;

[24] FIG. 8 is a schematic perspective structural view of a secondary wheel control rail according to an embodiment of the present invention;

Figure 9 is a front elevational view of the auxiliary wheel control rail of the embodiment of the present invention;

FIG. 10 is a schematic perspective structural view of a folding control rail according to an embodiment of the present invention; FIG.

Figure 11 is a front elevational view of the folding control rail of the embodiment of the present invention;

Figure 28 is a front elevational view of a bumper rail in accordance with an embodiment of the present invention;

Figure 13 is a cross-sectional view of Figure 12;

Figure 14 is a schematic diagram of the working principle of a specific embodiment of the present invention.

[31] Among them: la step main wheel; 2a step auxiliary wheel; 3a step pedal; 4a swing arm; 5a arm; 6a sliding shaft; 7a arm control pin; 8a hook lock; 9a hook lock block; Chute; 1 main wheel guide; 2 auxiliary wheel control rail; 21 horizontal transition straight section; 22 folding working curve section; 23 inclined transition curve section; 24 rail slot; Stack control rail; 31 horizontal section; 32 curved section; 33 inclined section; 34 control pin chute; 4 collision block guide; 5 auxiliary wheel guide.

[32] Specific implementation

[33] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[34] Embodiment: As shown in FIG. 5 to FIG. 14, a ladder structure for controlling a foldable step folding and opening, comprising a main wheel guide rail 1, the ladder road structure further comprising a secondary wheel control rail 2, and a folding The control rail 3 and the bumper rail 4 for releasing the latching direction against the top hook lock block 9a to the lock hook 8a, the rear wheel control rail 2 being provided with the foldable step auxiliary wheel 2a facing the inner side of the foldable step The guide rail groove 24, the two sides of the guide rail groove face the movement of the auxiliary wheel has a guiding and limiting function. The inner side of the folding control rail 3 is provided with a control pin chute 34 which is slidably engaged with the arm control pin 7a of the foldable step, and the movement of the two upper and lower facing arm control pins 7a of the control pin chute 34 is guided. , the limit action; the same can control the foldable step folding arm 5a opening and closing angle

[35] The ladder structure is located between the inclined working section ladder and the horizontal working section ladder.

[36] The auxiliary wheel control rail 2 includes a horizontal transition straight section 21 that is smoothly connected with the auxiliary wheel guide 5 of the horizontal working section ladder, and an inclined transition curve section 23 that is smoothly connected with the auxiliary wheel guide 5 of the inclined working section ladder. And a folded working curve segment 22 having a downward curvature which is smoothly transitioned between the horizontal transition straight section 21 and the inclined transition curved section 23. The folding working curve segment 22 is smoothly connected by a plurality of quadratic curves.

[37] The two ends of the folding control rail 3 respectively correspond to the horizontal section and the inclined section of the horizontal transition straight section 21 and the inclined transition curve section 23 of the auxiliary wheel control rail 2, and the ends of the folding control rail 3 are smoothed Connect the curved section with the upper arch.

[38] The collision block guide 4 corresponds to the position of the hook lock block 9a of the foldable step. The bumper rail 4 is located inside the inclined transition curve section 23 of the auxiliary wheel control rail 2, and the bumper rail 4 has a lower end than the hook lock block 9a and a middle portion higher than the hook lock block 9a, the two A curved surface is smoothly transitioned between the end and the middle portion, and the two ends of the collision block rail 4 are respectively located on the front side and the rear side of the turning portion of the inclined section of the folding control rail 3 and the curved section. The curved surface transitioning at both ends of the bumper rail 4 collides with the hook lock block 9a on the foldable step and jacks up the hook lock 8a to control the hook lock 8a to open and allow the hook lock 8a to be reset at an appropriate time to reach the control hook The purpose of opening and opening the lock 8a.

[39] The working principle is shown in Figure 14: [40] (1) When the foldable step is up, that is, the step needs to change from the folded state to the fully open state, the main step of the step along the main wheel guide 1 is normally driven by the horizontal section of the guide rail into the arc segment of the guide rail, on the step The arm control pin 7a first enters the folding control rail 3, and then the step auxiliary wheel 2a enters the auxiliary wheel control rail 2, and the folding step enters the initial stage from the folded state to the opening. With the running of the step, the swing arm 4a continuously downwards. When the arm slide shaft 6a slides backward, when the step arm slide shaft 6a slides into contact with the step hook 8a, the hook lock 8a is lifted up, and after sliding the hook lock 8a, the limit position is reached, and the step is fully opened. The hook lock 8a is reset by the action of its own spring to lock the step folding mechanism, and the step is completed from the folded state to the fully open state. The steps enter the normal inclined section of the ladder. During the whole transition process, due to the conjugate action of the three track curves of the main wheel guide curve, the auxiliary wheel control guide curve and the folding control guide curve on the step folding operation, the stepped pedal surface 3a is always horizontally in the folding process.吋 still has carrying capacity.

[41] (2) When the foldable step is down, the step needs to be changed from the fully open state to the folded raft. The main wheel of the step is normally driven along the main wheel guide rail and enters the arc segment of the guide rail by the inclined section of the guide rail. The pin 7a first enters the folding control rail 3, and then the step auxiliary wheel 2a enters the auxiliary wheel control rail 2, and after the auxiliary wheel enters the auxiliary wheel control rail 2, the lock hook bump 9a on the step hook 8a collides with the collision block rail 4 , the hook lock 8 & is jacked up, the step begins to enter the initial stage of transition from the fully open state to the folded state, when the step upper arm control pin 7a and the step auxiliary wheel 2a respectively exit the folding control rail 3 and the auxiliary wheel control rail 4 The step is completed from the fully open state to the folded state, and the step enters the normal horizontal section of the ladder. The same reason is the conjugate effect of the three track curves of the main wheel guide curve, the auxiliary wheel control guide curve and the folding control guide curve on the step folding operation, so that the stepped pedal surface is always in the horizontal state during the folding process, and the bearing capacity is still the same. .

[42] The invention can control the folding and opening of the foldable step, and keeps the stepped pedal surface horizontal and has the bearing capacity in the process of folding and opening the foldable step, the structure is reliable, the method is simple and easy.

Claims

Claim

[1] 1. A ladder structure for controlling a foldable step folding and opening, comprising a main wheel guide (1), characterized in that: the ladder structure further comprises a secondary wheel control rail (2), a folding control rail (3) and a striker rail (4) that abuts the hook lock block (9a) in the direction of unlocking the lock hook (8a), and the auxiliary wheel control rail (2) is disposed toward the inner side of the foldable step a collapsible auxiliary wheel (2a) mating rail groove (24), the inner side of the folding control rail (3) is provided with a control pin chute (34) which is slidably engaged with the arm control pin (7a) of the foldable step The bumper rail (4) corresponds to the position of the hook lock block (9a) of the foldable step.

2. The ladder structure for controlling collapsible step folding and opening according to claim 1, wherein: the ladder structure is located between the inclined working section ladder and the horizontal working section ladder.

3. The ladder structure for controlling the foldable step folding and opening according to claim 1, wherein: the auxiliary wheel control rail (2) comprises a smoothing of the auxiliary wheel guide (5) with the horizontal working section ladder The connected horizontal transition straight section (21), the inclined transition curve section (23) which is smoothly connected with the auxiliary wheel guide (5) of the inclined working section ladder, and the horizontal transition straight section (21) and the inclined transition curve section (23) Folded working curve segment with a downward curve between smooth transitions (22)

4. The ladder structure for controlling the foldable step folding and opening according to claim 2, wherein: the two ends of the folding control rail (3) and the horizontal transition straight section of the auxiliary wheel control rail (2) respectively (21) The horizontal section (31) and the inclined section (33) corresponding to the shape of the inclined transition curve section (23), and the curved section of the upper arch is smoothly connected between the horizontal section (31) and the inclined section (33) ( 32).

The ladder structure for controlling the foldable step folding and opening according to claim 3, wherein: the collision block rail (4) is located at the auxiliary wheel control rail (2) inclined transition curve section (23)

On the inner side, the collision block rail (4) has a lower end than the hook lock block (9a) and a middle portion higher than the hook lock block (9a), and a smooth transition surface between the two ends and the middle portion The two ends of the collision block rail (4) are respectively located at the front side and the rear side of the turning portion where the inclined section of the folding control rail (3) and the curved section are connected.