Handrail belt inlet protection device for automatic escalator

Abstract

The utility model relates to the technical field of automatic escalator protection equipment, and discloses a hand strap inlet protection device for an automatic escalator, which comprises an inlet panel, a mounting socket is arranged in the middle of the inlet panel, two groups of first connecting screws are symmetrically arranged on the side surface of the inlet panel, and two groups of second connecting screws are symmetrically arranged on the side surface of the inlet panel. Two second connecting screw rods are symmetrically arranged at the bottom end of the side face of the inlet panel, and an inlet trigger plate is inserted into the mounting insertion opening. Therefore, the entrance trigger plate can move towards the interior of the mechanism shell under stress more stably, the trigger force is located on the same plane, the entrance trigger plate can trigger the safety switch by triggering the abutting block, the stress of the whole action mechanism is more uniform, the problems of deflection, distortion, clamping and the like are avoided, and the service life of the mechanism is prolonged. The safety switch can be quickly and safely triggered, and the safe use requirement of a user is met.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic escalator protection equipment, in particular to a handrail belt entrance protection device for an automatic escalator. Background Technique

[0002] In an automatic escalator, a safety device needs to be set at the entrance and exit where the handrail belt enters and exits the escalator to ensure that in the case of foreign objects getting stuck in the gap during operation, the safety switch can be triggered in time to stop the escalator to ensure the safety of passengers, and a set of safety switches can also be used to detect the operating state of the automatic escalator.

[0003] However, in actual installation of the existing safety switch device, for the convenience of subsequent installation and maintenance, the placement of the safety switch will be biased towards the inner side, resulting in the switch not being centered. When the non-centered switch is triggered by force, the thrust it receives often fails to ensure the stability of the triggering force at the same time, sometimes being too large or too small. As a result, it is difficult to effectively ensure the triggering of the safety switch. Moreover, when the entire operating mechanism is unevenly stressed, due to the lack of a proper guide, problems such as skew, distortion, and jamming will occur, resulting in the inability to reliably trigger the safety switch, posing a significant potential safety hazard in use. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a handrail belt entrance protection device for an automatic escalator, which solves the problems that in actual installation of the existing safety switch device, for the convenience of subsequent installation and maintenance, the placement of the safety switch will be biased towards the inner side, resulting in the switch not being centered. When the non-centered switch is triggered by force, the thrust it receives often fails to ensure the stability of the triggering force at the same time, sometimes being too large or too small. As a result, it is difficult to effectively ensure the triggering of the safety switch. Moreover, when the entire operating mechanism is unevenly stressed, due to the lack of a proper guide, problems such as skew, distortion, and jamming will occur, resulting in the inability to reliably trigger the safety switch, posing a significant potential safety hazard in use.

[0005] The utility model provides the following technical solutions: A handrail belt entrance protection device for an automatic escalator includes an entrance panel. An installation socket is provided in the middle of the entrance panel. Two groups of first connecting screws are symmetrically arranged on the side surface of the entrance panel. Two second connecting screws are symmetrically arranged at the bottom end of the side surface of the entrance panel. An entrance trigger plate is inserted into the installation socket.

[0006] The side of the entrance trigger plate is sleeved with a mechanism shell, two limiting slide rails are symmetrically arranged on both sides of the mechanism shell, two spring mounting cylinders are symmetrically arranged on the inner wall of the mechanism shell, two side connecting ears are symmetrically arranged at both ends of the outer side of the mechanism shell, and the sides of the side connecting ears are provided with a first nut, and two groups of steel wire limiting frames are symmetrically arranged on the inner wall of the mechanism shell, and a translation steel wire is rotatably inserted through the steel wire limiting frames, and two steel wire limiting blocks are symmetrically arranged on the side of the entrance trigger plate, and the end of the translation steel wire is rotatably inserted in the steel wire limiting block, and two limiting slide grooves are symmetrically provided on the left and right sides of the entrance trigger plate, and the limiting slide grooves are slidably inserted by the limiting slide rails, and two spring limiting rods are symmetrically arranged on both sides of the entrance trigger plate, and the spring limiting rods are sleeved with a resistance spring, and the end of the resistance spring is inserted into the spring mounting cylinder, a safety switch is arranged on the side of the entrance panel, and a switch bracket is inserted on the second connecting screw.

[0007] Preferred technical solution 1: The bottom end of the safety switch is fixedly connected to the switch bracket, and the end of the second connecting screw is sleeved with a second nut.

[0008] Preferred technical solution 2: A triggering resistance block is arranged on the side of the bottom end of the inlet trigger plate, and a bottom opening is opened and closed on the side of the bottom end of the mechanism housing.

[0009] Preferred technical solution three: a protrusion is provided at the end of the inlet trigger plate, and the protrusion slides through the mounting socket.

[0010] This solution can make the installation between the entrance trigger plate and the entrance panel more stable.

[0011] Preferred technical solution four: the bottom end of the trigger resistance block is located on the side of the trigger end of the safety switch.

[0012] This solution enables the inlet trigger plate to move when it is subjected to a resistance force, and can simultaneously drive the trigger resistance block to resist the trigger end of the safety switch, thereby quickly triggering the safety switch.

[0013] Preferred technical solution five: the opening diameter of the bottom opening is larger than the diameter of the trigger resistance block.

[0014] This solution enables the triggering resistance block to pass through the bottom opening more conveniently.

[0015] Compared with the prior art, the utility model provides an escalator handrail entrance protection device, which has the following beneficial effects:

[0016] (1) The utility model provides an entrance trigger plate and a mechanism shell on the side of the entrance panel, and provides a limiting slide groove and a wire limiting block on the side of the entrance trigger plate, so that the entrance trigger plate can stably slide in the mechanism shell, and the translational steel wire provided on the mechanism shell can rotate under the limitation of the wire limiting frame and the wire limiting block, so that the entrance trigger plate can move toward the inside of the mechanism shell more smoothly when subjected to force and the triggering force is on the same plane, and then the entrance trigger plate can trigger the safety switch through the triggering resistance block, so that the force on the entire action mechanism is more uniform, and no problems such as skewing, twisting, and jamming will occur, and the safety switch can be triggered quickly and safely, meeting the safety use requirements of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure decomposition of the utility model;

[0019] Figure 3 For the utility model Figure 2 A magnified view of the structure of the middle wire limit plate;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of the internal structure of the central mechanism shell.

[0021] In the figure: 1. entrance panel; 2. mounting socket; 3. first connecting screw; 4. second connecting screw; 5. trigger push plate; 6. mechanism housing; 7. limit slide rail; 8. spring mounting cylinder; 9. side connecting ear; 10. first nut; 11. steel wire limit plate; 12. translation steel wire; 13. steel wire limit block; 14. limit slide groove; 15. spring limit rod; 16. resistance spring; 17. safety switch; 18. switch bracket; 19. second nut; 20. trigger resistance block; 21. bottom opening. DETAILED DESCRIPTION

[0022] See also Figures 1-4

[0023] Embodiment 1: An entrance protection device for an escalator handrail comprises an entrance panel 1, a mounting socket 2 is provided in the middle of the entrance panel 1, two groups of first connecting screws 3 are symmetrically arranged on the side of the entrance panel 1, two second connecting screws 4 are symmetrically arranged at the bottom end of the side of the entrance panel 1, and an entrance trigger plate 5 is inserted in the mounting socket 2.

[0024] A mechanism housing 6 is sleeved on the side of the entrance trigger plate 5, two limiting slide rails 7 are symmetrically arranged on both sides inside the mechanism housing 6, two spring mounting tubes 8 are symmetrically arranged on the inner wall of the mechanism housing 6, two side connecting ears 9 are symmetrically arranged at both ends of the outer side of the mechanism housing 6, and a first nut 10 is arranged on the side of the side connecting ear 9, two groups of steel wire limiting frames 11 are symmetrically arranged on the inner wall of the mechanism housing 6, and a translational steel wire 12 is inserted and rotatably penetrated on the steel wire limiting frames 11, and two steel wire limiting blocks 13 are symmetrically arranged on the side of the entrance trigger plate 5.

[0025] The end of the translational steel wire 12 is rotatably inserted in the steel wire limit block 13, and two limit slide grooves 14 are symmetrically opened on the left and right sides of the entrance trigger plate 5. The limit slide grooves 14 are slidably inserted by the limit slide rail 7. Two spring limit rods 15 are symmetrically arranged on both sides of the entrance trigger plate 5. The spring limit rods 15 are both sleeved with a resistance spring 16, and the end of the resistance spring 16 is inserted into the spring mounting tube 8.

[0026] A safety switch 17 is provided on the side of the entrance panel 1, a switch bracket 18 is inserted into the second connecting screw 4, the bottom end of the safety switch 17 is fixedly connected to the switch bracket 18, a second nut 19 is sleeved on the end of the second connecting screw 4, a trigger resistance block 20 is provided on the side of the bottom end of the entrance trigger plate 5, and a bottom opening 21 is opened and closed on the side of the bottom end of the mechanism housing 6.

[0027] Embodiment 2: The difference between this embodiment and embodiment 1 is that a protrusion is provided at the end of the inlet trigger plate 5 , and the protrusion slides through the mounting socket 2 .

[0028] This makes the installation between the inlet trigger plate 5 and the inlet panel 1 more stable.

[0029] Embodiment 3: The difference between this embodiment and embodiment 1 is that the bottom end of the triggering resistance block 20 is located on the side of the triggering end of the safety switch 17 .

[0030] When the inlet trigger plate 5 is moved by the resistance force, it can simultaneously drive the trigger resistance block 20 to resist the trigger end of the safety switch 17, thereby quickly triggering the safety switch 17.

[0031] Embodiment 4: The difference between this embodiment and embodiment 1 is that the opening diameter of the bottom opening 21 is larger than the diameter of the triggering and resisting block 20 .

[0032] This enables the triggering resistance block 20 to pass through the bottom opening 21 more conveniently.

[0033] In this embodiment, when the existing safety switch device is actually installed, for the convenience of subsequent installation and maintenance, the placement of the safety switch will tend to be biased towards the inner side, resulting in the switch not being centered. For a non-centered switch, when it is triggered by force, the thrust it receives often cannot ensure the stability of the triggering force at the same time, and sometimes it will be too large or too small. As a result, it is difficult to effectively ensure the triggering of the safety switch. Moreover, when the entire operating mechanism is under uneven force, without a proper guide, problems such as skewing, distortion, and jamming will occur, resulting in the inability to reliably trigger the safety switch, posing a significant potential safety hazard during use.

[0034] In summary, during specific implementation, since a limiting slide rail 7 is provided inside the mechanism housing 6, and a limiting sliding groove 14 that cooperates with the limiting slide rail 7 is correspondingly provided on the entrance trigger plate 5. After the entrance trigger plate 5 is subjected to force, it will translate along the limiting slide rail 7. During the backward movement of the entrance trigger plate 5, the safety switch 17 will be triggered simultaneously to stop the escalator. Due to reasons such as the fitting clearance and friction, the limiting sliding groove 14 can only play a guiding role and cannot ensure the smooth movement of the entrance trigger plate 5 on it.

[0035] During the movement process, the reset is carried out through the abutting spring 16 to ensure that the entire operation process is continuous and stable, and at the same time, it can quickly return to the original position during the triggering process.

[0036] To enable the entire mechanism to drive the entire entrance trigger plate 5 to perform reliable translation after being subjected to force at any point, two groups of wire limiting frames 11 are fixed inside the mechanism housing 6, four wire limiting blocks 13 are provided on the entrance trigger plate 5, one side of the two translation wires 12 is clamped into the wire limiting blocks 13 provided on the entrance trigger plate 5, and the other side of the translation wire 12 passes through the wire limiting frame 11.

[0037] Through the two translation wires 12, the four end points on the back of the entrance trigger plate 5 can be connected into a whole. When the entrance trigger plate 5 translates in the limiting slide rail 7, the translation wires 12 connecting the wire limiting frame 11 and the entrance trigger plate 5 will have relative movement, ensuring that the translation generated after any point is subjected to force can transmit the force to the far end point through the translation wires 12, and the force application point pulls the far end point to move together through the translation wires 12.

[0038] During the translation process of the entrance trigger plate 5, the translation wires 12 will perform rotational movement within the wire limiting blocks 13 and slide up and down within the wire limiting frame 11 on the other side. And the translation wires 12 have sufficient strength. During the translation process of the entrance trigger plate 5, the angles of the translation wires 12 are constantly changing, simultaneously driving the four end points of the entrance trigger plate 5 to translate at the same time. Coupled with the guiding limiting sliding groove 14, it can ensure the stable and reliable translation of the mechanism to trigger the safety switch 17.

Claims

1. An escalator handrail entrance protection device, comprising an entrance panel (1), characterized in that: A mounting socket (2) is provided in the middle of the inlet panel (1), two groups of first connecting screws (3) are symmetrically arranged on the side of the inlet panel (1), two second connecting screws (4) are symmetrically arranged at the bottom of the side of the inlet panel (1), and an inlet trigger plate (5) is inserted into the mounting socket (2); The side of the inlet trigger plate (5) is sleeved with a mechanism housing (6), two limiting slide rails (7) are symmetrically arranged on both sides of the inside of the mechanism housing (6), two spring mounting cylinders (8) are symmetrically arranged on the inner wall of the mechanism housing (6), two side connecting ears (9) are symmetrically arranged at both ends of the outer side of the mechanism housing (6), and the side of the side connecting ear (9) is provided with a first nut (10), and two groups of steel wire limiting frames (11) are symmetrically arranged on the inner wall of the mechanism housing (6), and a translation steel wire (12) is inserted and rotatably penetrated on the steel wire limiting frames (11), and two steel wire limiting blocks (11) are symmetrically arranged on the side of the inlet trigger plate (5). 3), the end of the translational steel wire (12) is rotatably inserted into the steel wire limit block (13), two limit slide grooves (14) are symmetrically provided on the left and right sides of the entrance trigger plate (5), and the limit slide grooves (14) are slidably inserted by the limit slide rail (7), and two spring limit rods (15) are symmetrically provided on both sides of the entrance trigger plate (5), and the spring limit rods (15) are both sleeved with a resistance spring (16), and the end of the resistance spring (16) is inserted into the spring mounting tube (8), a safety switch (17) is provided on the side of the entrance panel (1), and a switch bracket (18) is inserted on the second connecting screw (4).

2. The escalator handrail entrance protection device according to claim 1, characterized in that: The bottom end of the safety switch (17) is fixedly connected to the switch bracket (18), and the end of the second connecting screw (4) is sleeved with a second nut (19).

3. The escalator handrail entrance protection device according to claim 2, characterized in that: A triggering abutment block (20) is arranged on the side of the bottom end of the inlet trigger plate (5), and a bottom opening (21) is opened and closed on the side of the bottom end of the mechanism housing (6).

4. The escalator handrail entrance protection device according to claim 3, characterized in that: The end of the inlet trigger plate (5) is provided with a protrusion, and the protrusion slides through the installation socket (2).

5. The escalator handrail entrance protection device according to claim 4, characterized in that: The bottom end of the triggering resistance block (20) is located on the side of the triggering end of the safety switch (17).

6. The escalator handrail entrance protection device according to claim 5, characterized in that: The opening diameter of the bottom opening (21) is greater than the diameter of the triggering resistance block (20).

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