Safety protection structure for comb plate of escalator

Abstract

The utility model discloses an escalator comb plate safety protection structure, and relates to the technical field of escalators. The device comprises a platform, a toothed plate is elastically arranged on one side of the platform in a sliding mode, and a component force plate is arranged on one side of the toothed plate and located in the platform. A transmission rod and two connecting pieces are arranged on one side of the component force plate, the transmission rod is elastically matched in the platform, the connecting pieces are in sliding fit in the platform, a stop button corresponding to the transmission rod is arranged in the platform, and the transmission rod is located between the stop button and the component force plate. The double-drive assembly is controlled to work, the rotating piece is driven to rotate, the power rod is limited by the eccentric rod and the connecting piece, power can be conveniently transmitted to the connecting piece through the power rod, and rotating motion of the rotating piece is converted into pushing of the power rod to the connecting piece; and the power rod pushes the connecting piece, the component force plate and the toothed plate to slide in the direction away from the platform, so that garbage is conveniently pushed away from the toothed plate, and the garbage cleaning effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of escalators, specifically, it relates to a safety protection structure for escalator comb plates. Background Technology

[0002] The comb plate is located at the entrance or exit of the running steps or treads. It is a component that meshes with the steps or treads to facilitate the transition for passengers. It is also a safety protection device for the elevator.

[0003] Chinese Patent No. CN221987921U discloses a safety protection structure for an escalator comb plate, comprising: a comb plate, a push plate fixedly connected to the back of the comb plate, a platform movably inserted into the outer surface of the push plate, a cleaning component fixedly inserted into the front interior of the comb plate, two sets of slots on the back of the comb plate, the cleaning component including a cleaning groove, the outer surface of the cleaning groove being fixedly inserted into the front interior of the comb plate, a transmission rod rotatably connected to the inner wall of the cleaning groove, multiple sets of collars arranged in a linear array fixedly connected to the outer surface of the transmission rod, a cleaning plate fixedly connected to the bottom surface of each collar and the cleaning plate being located within the gap of the comb plate, and a connecting block fixedly connected to the back of each cleaning plate.

[0004] The safety protection structure for the comb plate of an escalator disclosed in this application works by rotating a transmission rod to drive a connecting block to rotate, thereby cleaning the debris in the gaps between the comb plates. However, during the rotation cleaning process, it is easy to miss some horizontal dead corners, resulting in poor cleaning effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a safety protection structure for the comb plate of an escalator, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An escalator comb plate safety protection structure includes: a platform, a comb plate that slides elastically on one side of the platform, a force-shaping plate installed on one side of the comb plate, and the force-shaping plate being located inside the platform;

[0008] A transmission rod and two connecting parts are installed on one side of the force distribution plate. The transmission rod is located between the two connecting parts, and the force distribution plate is located between the transmission rod and the toothed plate. The transmission rod is elastically fitted within the platform, and the connecting parts are slidably fitted within the platform. A stop button corresponding to the transmission rod is installed within the platform, and the transmission rod is located between the stop button and the force distribution plate. A dual-drive assembly is installed within the platform, and two rotating parts meshing with the dual-drive assembly are rotatably fitted. The dual-drive assembly is located between the two rotating parts. An eccentric rod is installed on the upper end face of the rotating parts. The axis of the eccentric rod is not collinear with the axis of the rotating parts. A power rod is rotatably fitted around the eccentric rod, and the end of the power rod away from the rotating parts is rotatably connected to the connecting parts.

[0009] Optionally, a sliding groove is provided on one side of the platform, which runs through the lower side of the platform. The force distribution plate is located in the sliding groove. The platform is provided with a movable groove, an internal groove corresponding to the dual drive assembly, and a power groove corresponding to the rotating component. The movable groove and the internal groove are both located between the two power grooves. The stop button is installed on one side of the movable groove. A groove is provided between the movable groove and the sliding groove. The transmission rod passes through the groove laterally. Both ends of the dual drive assembly pass through the corresponding power groove laterally. The rotating component rotates and engages in the corresponding power groove.

[0010] Optionally, the dual drive assembly includes a dual-output shaft motor installed between the two sides of the built-in slot. The two ends of the output shaft of the dual-output shaft motor pass through the corresponding power slots, and both ends of the output shaft of the dual-output shaft motor are fixedly connected to a bevel gear, which meshes with the corresponding rotating component.

[0011] Optionally, the rotating component includes a second bevel gear that is rotatably fitted on the lower side of the power groove. The second bevel gear meshes with the corresponding first bevel gear. A protrusion is installed on the lower end face of the second bevel gear. A slot corresponding to the protrusion is provided on the lower side of the power groove. The protrusion is rotatably fitted in the slot. An eccentric rod is installed on the upper end face of the second bevel gear.

[0012] Optionally, a bearing is installed around the slot, and the bearing is installed around the protrusion.

[0013] Optionally, the connector includes a connecting rod installed on one side of the force distribution plate, a straight groove corresponding to the connecting rod on one side of the slide groove, the straight groove being connected to the corresponding power groove, the connecting rod passing through the straight groove laterally, a rotating rod installed on one side of the connecting rod, a through groove corresponding to the rotating rod on the side of the power rod away from the eccentric rod, the through groove passing through the power rod laterally, rotating holes connected to the through grooves on both the upper and lower sides of the power rod, and limit blocks installed on both the upper and lower sides of the rotating rod, the limit blocks passing through the corresponding rotating holes vertically.

[0014] Optionally, a connecting block is installed on the periphery of one end of the transmission rod, and sliders are installed on both sides of the connecting block. A support rod corresponding to the slider is installed between the two sides of the movable groove. The slider is elastically fitted on the periphery of the support rod. A spring is installed between the slider and one side of the movable groove, and the spring is sleeved on the periphery of the corresponding support rod.

[0015] Optionally, two limiting rods are installed on one side of the toothed plate, and a limiting groove corresponding to the limiting rods is provided on one side of the slide groove. Two power grooves are located between the two limiting grooves, and the limiting rods slide in the corresponding limiting grooves.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] By controlling the operation of the dual-drive components, the rotating parts are driven to rotate. The eccentric rod and the connecting parts restrict the power rod, facilitating the transmission of power to the connecting parts through the power rod. This converts the rotational motion of the rotating parts into a push by the power rod on the connecting parts, causing the power rod to push the connecting parts, the force distribution plate, and the toothed plate to slide away from the platform. This makes it easier to push the garbage away from the toothed plate, improving the garbage cleaning effect and reducing the probability of leaving sanitary dead corners in the horizontal direction. By rotating the power rod between the eccentric rod and the connecting parts, the probability of the connecting parts getting stuck during sliding is reduced, improving the smoothness of the sliding of the connecting parts and extending the service life of the components.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] In the picture:

[0021] Figure 1 A schematic diagram of the three-dimensional structure of the platform-tooth plate;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the platform;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the power trough;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the movable groove.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Platform, 2. Gear plate, 3. Slide groove, 4. Force distribution plate, 5. Transmission rod, 6. Connecting rod, 7. Limiting rod, 8. Limiting groove, 9. Power groove, 10. Dual-shaft motor, 11. Bevel gear one, 12. Bevel gear two, 13. Eccentric rod, 14. Power rod, 15. Limiting block, 16. Connecting block, 17. Support rod, 18. Spring, 19. Slider, 20. Stop button.

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In modern urban transportation and large-scale building facilities, escalators, as an efficient and convenient vertical transportation device, are widely used in densely populated places such as shopping malls, subway stations, airports, and hotels. With the increasing frequency of escalator use, the importance of their safety and maintenance is becoming increasingly prominent. Among these components, the comb plate, as a key part of the escalator, plays a crucial role in ensuring passenger safety and the normal operation of the escalator.

[0031] In existing technologies, there are various types of escalator comb plates. In terms of materials, common types include metal comb plates, such as stainless steel comb plates, which are widely used in large commercial venues and transportation hubs due to their high strength and wear resistance, capable of withstanding large passenger flows and frequent foot traffic. There are also comb plates made of engineering plastics, which are relatively lightweight and flexible, and are commonly used in places with strict cost control and relatively low passenger flow. These can reduce the overall weight of the escalator and decrease operating energy consumption to some extent.

[0032] In terms of application scenarios, escalator comb plates are mainly installed at the entrances and exits of escalators. In shopping malls, due to the large flow of people and complex personnel activities, comb plates need to have good safety and cleaning capabilities to prevent debris from being caught in the escalator and causing malfunctions, while ensuring the safe passage of passengers. In subway stations, facing dense crowds during peak hours, comb plates not only need to withstand high-intensity use, but also need to adapt to different types of luggage being dragged, requiring extremely high durability and stability. In airports, considering the wide variety of luggage carried by passengers, and the possibility of some special equipment or items, comb plates need to have sufficient protective capabilities to prevent foreign objects from entering the escalator and affecting operational safety.

[0033] From a basic structural perspective, traditional escalator comb plates generally consist of comb teeth and a base plate. The comb teeth are the parts that directly contact the soles of passengers' shoes and mesh with the steps. Their shape and spacing are carefully designed to ensure passengers can smoothly step onto and off the escalator while preventing their shoes from getting caught. The comb teeth are usually serrated, and the gaps between adjacent teeth must ensure smooth engagement with the grooves of the steps while preventing small objects from falling in. The base plate is the basic structure supporting the comb teeth. It is connected to other components of the escalator, serving to fix the comb teeth and transmit force. The base plate generally has a certain thickness and strength to ensure it will not deform or be damaged during long-term use.

[0034] To further improve the safety of escalator comb plates, various safety protection structures have emerged in existing technologies. For example, some comb plates are equipped with electrical safety protection devices. When the comb plate is subjected to abnormal external impact or a foreign object becomes lodged, causing displacement, this device can detect this change in a timely manner and transmit a signal to the escalator's control system, causing the escalator to stop immediately, thereby preventing more serious safety accidents. Such electrical safety protection devices typically include sensors, controllers, and actuators. The sensors monitor the status of the comb plate in real time, and once an abnormality is detected, they transmit a signal to the controller. After receiving the signal, the controller analyzes and judges the situation, and issues a command to the actuator, which then quickly cuts off the escalator's power supply, achieving emergency braking.

[0035] In terms of cleaning and maintenance, traditional escalator comb plate cleaning methods are relatively simple. They mostly rely on regular manual cleaning, with workers using brooms, brushes, and other tools to sweep away debris from the gaps between the comb plates. This cleaning method is inefficient and struggles to thoroughly remove dirt and small debris from the gaps. With technological advancements, some automatically cleaning comb plate structures have emerged. For example, the escalator comb plate safety protection structure mentioned earlier achieves automatic cleaning by incorporating a cleaning component inside the comb plate. The drive rod in the cleaning component rotates, causing a collar and a cleaning plate connected to the collar to rotate, thereby cleaning debris from the gaps between the comb plates. However, this rotational cleaning method has certain limitations in practical applications. As pointed out in the background issue, horizontal blind spots may not be cleaned during rotation, resulting in poor cleaning effectiveness. This is because when the cleaning plate rotates, its cleaning range is mainly concentrated in the vertical comb gaps, with limited effectiveness in cleaning dirt and debris adhering to the sides of the comb teeth or deep within the gaps in the horizontal direction.

[0036] In addition, some escalator comb plate safety protection structures also consider waterproofing and dustproofing. Since escalators may operate in various environments, especially in humid places or dusty areas, waterproofing and dustproofing are crucial for ensuring the normal operation of the comb plate and internal escalator components. Common waterproofing designs include installing sealing strips or waterproof gaskets at the joints between the comb plate and surrounding components to prevent moisture from seeping into the escalator interior; dustproofing designs typically use dust covers or dust nets on the comb plate surface to reduce the possibility of dust entering the comb gaps and the escalator interior. However, these waterproofing and dustproofing measures may fail over long-term use due to aging of the sealing strips, damage to the dust covers, etc., requiring regular inspection and maintenance.

[0037] Please see Figure 1-4 As shown, this embodiment provides a safety protection structure for an escalator comb plate, including: a platform 1, a comb plate 2 that slides elastically on one side of the platform 1, a force-shaping plate 4 installed on one side of the comb plate 2, and the force-shaping plate 4 located inside the platform 1.

[0038] A transmission rod 5 and two connecting parts are installed on one side of the force distribution plate 4. The transmission rod 5 is located between the two connecting parts. The force distribution plate 4 is located between the transmission rod 5 and the toothed plate 2. The transmission rod 5 is elastically fitted in the platform 1. The connecting parts are slidably fitted in the platform 1. A stop button 20 corresponding to the transmission rod 5 is installed in the platform 1. The transmission rod 5 is located between the stop button 20 and the force distribution plate 4. A dual drive assembly is set in the platform 1. Two rotating parts mesh with the dual drive assembly. The dual drive assembly is located between the two rotating parts. An eccentric rod 13 is installed on the upper end face of the rotating parts. The axis of the eccentric rod 13 is not collinear with the axis of the rotating parts. A power rod 14 is rotatably fitted around the eccentric rod 13. The end of the power rod 14 away from the rotating parts is rotatably connected to the connecting parts.

[0039] One application of this embodiment is as follows: When garbage adheres to or gets stuck on the escalator and is conveyed and squeezed by the toothed plate 2, the toothed plate 2 and the force distribution plate 4 are squeezed and slide inwards towards the platform 1. The sliding of the force distribution plate 4 will push the connecting member and the transmission rod 5 to slide synchronously. When the connecting member slides, it will push the eccentric rod 13 and the rotating member to rotate through the power rod 14. When the transmission rod 5 touches the stop button 20, the stop button 20 controls the escalator to stop running and controls the dual drive assembly to drive the two rotating members to rotate. This causes the eccentric rod 13 to push the connecting member to slide in the opposite direction through the power rod 14, thereby causing the connecting member to push the force distribution plate 4 and the toothed plate 2 to slide away from the platform 1, thus using the toothed plate 2 to push the garbage away. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0040] By controlling the operation of the dual-drive components, the rotating parts are driven to rotate. The eccentric rod 13 and the connecting parts restrict the power rod 14, making it easier to transmit power to the connecting parts through the power rod 14. The rotational motion of the rotating parts is converted into the power rod 14 pushing the connecting parts, causing the power rod 14 to push the connecting parts, the force distribution plate 4, and the toothed plate 2 to slide away from the platform 1. This makes it easier to push the garbage away from the toothed plate 2, improves the garbage cleaning effect, and reduces the probability of leaving sanitary dead corners in the horizontal direction. By rotating the power rod 14 between the eccentric rod 13 and the connecting parts, the probability of the connecting parts getting stuck when sliding is reduced, the smoothness of the sliding of the connecting parts is improved, and the service life of the accessories is increased.

[0041] like Figure 2-4 As shown, in this embodiment, a sliding groove 3 is provided on one side of the platform 1, which penetrates the lower side of the platform 1. The force distribution plate 4 is located in the sliding groove 3. The platform 1 is provided with a movable groove, an internal groove corresponding to the dual drive assembly, and a power groove 9 corresponding to the rotating component. The movable groove and the internal groove are both located between the two power grooves 9. The stop button 20 is installed on one side of the movable groove. A groove is provided between the movable groove and the sliding groove 3. The transmission rod 5 passes through the groove laterally. Both ends of the dual drive assembly pass through the corresponding power grooves 9 laterally. The rotating component rotates and engages in the corresponding power groove 9. Through the cooperation of the sliding groove 3, the groove, and the movable groove, it is convenient for the toothed plate 2 to slide and drive the transmission rod 5 to contact the stop button 20. Through the cooperation of the internal groove and the power groove 9, it is convenient for the dual drive assembly to work and drive the rotating component to rotate.

[0042] like Figure 2 As shown, the dual-drive assembly of this embodiment includes a dual-output shaft motor 10 installed between the two sides of the built-in slot. The two ends of the output shaft of the dual-output shaft motor 10 respectively pass through the corresponding power slot 9. Both ends of the output shaft of the dual-output shaft motor 10 are fixedly connected to bevel gears 11. The bevel gears 11 mesh with the corresponding rotating parts. By controlling the operation of the dual-output shaft motor 10, it is easy to drive the two bevel gears 11 to rotate synchronously, thereby making it easy to drive the two rotating parts to rotate synchronously, and thus enabling the two connecting parts to slide synchronously.

[0043] like Figure 2 , 3 As shown, the rotating component in this embodiment includes a second bevel gear 12 rotatably fitted on the lower side of the power groove 9. The second bevel gear 12 meshes with the corresponding first bevel gear 11. A protrusion is installed on the lower end face of the second bevel gear 12. A slot corresponding to the protrusion is provided on the lower side of the power groove 9. The protrusion is rotatably fitted in the slot. An eccentric rod 13 is installed on the upper end face of the second bevel gear 12. By cooperating with the protrusion and the slot, the probability of the second bevel gear 12 disengaging from the first bevel gear 11 when rotating is reduced.

[0044] like Figure 3As shown, in this embodiment, a bearing is installed on the periphery of the slot hole. The bearing is installed on the periphery of the protrusion. The bearing reduces the friction between the protrusion and the slot hole when the protrusion is rotated, and at the same time improves the stability of the bevel gear 12 when it rotates.

[0045] like Figure 2 , 3 As shown, the connector in this embodiment includes a connecting rod 6 mounted on one side of the force distribution plate 4. A straight groove corresponding to the connecting rod 6 is provided on one side of the sliding groove. The straight groove is connected to the corresponding power groove 9. The connecting rod 6 passes through the straight groove laterally. A rotating rod is mounted on one side of the connecting rod 6. A through groove corresponding to the rotating rod is provided on the side of the power rod 14 away from the eccentric rod 13. The through groove passes through the power rod 14 laterally. Rotating holes connected to the through groove are provided on both the upper and lower sides of the power rod 14. Limiting blocks 15 are mounted on both the upper and lower sides of the rotating rod. The limiting blocks 15 pass through the corresponding rotating holes vertically. The limiting blocks 15 provide a rotational support for the power rod 14, and the eccentric rod 13 provides another rotational support for the power rod 14, so that the power rod 14 can rotate between the rotating rod and the eccentric rod 13. At the same time, the power rod 14 facilitates the transmission of the thrust received by the connecting rod 6 to the bevel gear 12, so that the bevel gear 12 can rotate, or the rotation of the bevel gear 12 can be converted into the sliding of the connecting rod 6.

[0046] like Figure 2 , 4 As shown, in this embodiment, a connecting block 16 is installed on the periphery of one end of the transmission rod 5. A slider 19 is installed on both sides of the connecting block 16. A support rod 17 corresponding to the slider 19 is installed between the two sides of the movable groove. The slider 19 is elastically fitted on the periphery of the support rod 17. A spring 18 is installed between the slider 19 and one side of the movable groove. The spring 18 is sleeved on the periphery of the corresponding support rod 17. By cooperating with the support rod 17, the stability of the transmission rod 5 when sliding is improved. By using the spring 18, the pressure of the garbage on the toothed plate 2 is balanced, reducing the probability that the transmission rod 5 will touch the stop button 20 due to the pressure of a small amount of garbage on the toothed plate 2.

[0047] like Figure 2 As shown, in this embodiment, two limiting rods 7 are installed on one side of the toothed plate 2, and a limiting groove 8 corresponding to the limiting rods 7 is provided on one side of the slide groove 3. Two power grooves 9 are located between the two limiting grooves 8. The limiting rods 7 are slidably engaged in the corresponding limiting grooves 8. By engaging the limiting rods 7 and the limiting grooves 8, the sliding stability of the toothed plate 2 is improved, and the probability of the transmission rod 5 and the connecting rod 6 breaking under stress is reduced.

[0048] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. An escalator comb plate safety protection structure, characterized in that, The utility model relates to a kind of toothed plate and drive device, including: Platform (1), platform (1) one side elastic sliding has toothed plate (2), toothed plate (2) one side is equipped with force plate (4), force plate (4) is located in platform (1) inside; Force plate (4) one side is equipped with transmission rod (5) and two connecting pieces, transmission rod (5) is elastically fitted in platform (1), connecting piece is slidably fitted in platform (1), platform (1) is equipped with corresponding stop button (20) with transmission rod (5) in, transmission rod (5) is located between stop button (20) and force plate (4), platform (1) is provided with double drive assembly, is rotatably connected with two rotors engaged with double drive assembly, eccentric rod (13) is equipped on the upper end surface of rotor, power rod (14) is rotatably connected with connecting piece away from eccentric rod (13) end.

2. The safety structure for the comb plate of the escalator according to claim 1, characterized in that, Platform (1) one side is equipped with chute (3), chute (3) penetrates platform (1) lower side, force plate (4) is located in chute (3), platform (1) is equipped with movable slot, corresponding built-in slot with double drive assembly, corresponding power slot (9) with rotor, stop button (20) is equipped on one side of movable slot, recess is arranged between movable slot and chute (3), transmission rod (5) transversely penetrates recess.

3. A safety structure for a comb plate of an escalator according to claim 2, wherein Double drive assembly includes double-shaft motor (10) equipped between the two sides of built-in slot, the output shaft of double-shaft motor (10) both ends is fixedly connected with bevel gear one (11), bevel gear one (11) is engaged with corresponding rotor.

4. A safety structure for a comb plate of an escalator according to claim 3, wherein Rotor includes bevel gear two (12) rotatably fitted in power slot (9) lower side, bevel gear two (12) is engaged with corresponding bevel gear one (11), bevel gear two (12) lower end surface is equipped with convex column, power slot (9) lower side is equipped with corresponding slot hole with convex column, eccentric rod (13) is equipped on the upper end surface of bevel gear two (12).

5. A safety structure for a comb plate of an escalator according to claim 4, wherein Slot hole is equipped with bearing on the circumferential side, and the bearing is arranged on the circumferential side of the convex column.

6. A safety structure for a comb plate of an escalator according to claim 4, wherein Connecting piece includes connecting rod (6) equipped on one side of force plate (4), and the straight slot corresponding to the connecting rod (6) is arranged on one side of the chute, and the connecting rod (6) transversely penetrates the straight slot, and the connecting rod (6) one side is equipped with rotating rod, and the side, away from eccentric rod (13) of power rod (14), is equipped with the through slot corresponding to the rotating rod, and the rotating rod is equipped with the rotating hole in communication with the through slot on the upper and lower sides, and the rotating rod is equipped with the limiting block (15) on the upper and lower sides, and the limiting block (15) vertically penetrates the corresponding rotating hole.

7. The safety structure for the comb plate of an escalator according to claim 2, wherein Transmission rod (5) one end circumferential side is equipped with connecting block (16), connecting block (16) both sides are equipped with sliding block (19), and the sliding block (19) is elastically fitted on the circumferential side of the support rod (17) between the two sides of movable slot.

8. The safety structure for the comb plate of an escalator according to claim 2, wherein Toothed plate (2) one side is equipped with two limiting rods (7), and the limiting slot (8) corresponding to the limiting rod (7) is arranged on one side of the chute (3).

Images