A meter sorting system for recycling meters

Abstract

The utility model relates to the technical field of recycling electricity meter sorting, concretely to a recycling electricity meter sorting system, including the feeding conveyor, the feeding conveyor is the belt conveyor, is provided with the right component, image scanning subassembly and the marking subassembly on the feeding conveyor, and the tail end of feeding conveyor is provided with the sorting mechanism, the sorting mechanism includes the support seat, the support seat can be supported on the ground through the support leg, and the rotating seat is rotatably installed through the cooperation of shaft and bearing on the support seat, the bottom of support seat is provided with the rotating motor, and the transmission is connected between rotating motor and rotating seat, a plurality of limit clamping bases are arranged in annular array on the rotating seat, a limit clamping groove is formed on the limit clamping base, a push plate is slidably installed in each limit clamping groove, a rotor is arranged in the push plate, the rotor is a permanent magnet, and an electromagnetic drive structure is arranged on each limit clamping base and matched with the rotor, the utility model can automatically right the recycling electricity meter, gather classification, mark sorting, and the electromagnetic cooperation design saves space, and improves installation flexibility.

Description

Technical Field

[0001] This utility model relates to the field of recycling meter sorting technology, specifically a recycling meter sorting system. Background Technology

[0002] In the recycling and processing of reused electricity meters, sorting is a crucial preliminary step to ensure the efficient execution of subsequent maintenance, calibration, or scrapping processes. Currently, the sorting of reused electricity meters largely relies on manual labor or semi-automated equipment, which presents several challenges:

[0003] Manual sorting requires manually aligning the electricity meters, visually identifying and labeling them, which is inefficient and prone to errors due to human error, making it difficult to adapt to large-scale recycling needs.

[0004] Existing semi-automated equipment often uses mechanical push rod sorting structures or robotic arm transfer structures, which occupy a lot of space, have poor installation and layout flexibility, and lack standardized pre-processing steps.

[0005] The inconsistent posture of the electricity meter during transportation directly affects the accuracy of subsequent image acquisition and marking precision, leading to deviations in classification criteria. Utility Model Content

[0006] The purpose of this invention is to provide a recycling meter sorting system to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a recycling meter sorting system, including a feeding conveyor, which is a belt conveyor. The feeding conveyor is equipped with a leveling component, an image scanning component, and a marking component. A sorting mechanism is provided at the tail end of the feeding conveyor. The sorting mechanism includes a support base, which is supported on the ground by support legs. A rotating seat is rotatably mounted on the support base through the cooperation of a shaft and a bearing. A rotating motor is provided at the bottom end of the support base, and the rotating motor is connected to the rotating seat through a transmission. Multiple limit holders are arranged in a circular array on the rotating seat. Limit holders have limit slots. A push plate is slidably installed in each limit slot. A mover is provided inside the push plate. The mover is a permanent magnet. An electromagnetic drive structure is provided on each limit holder in conjunction with the mover.

[0008] This invention is further configured such that the electromagnetic drive structure includes an electromagnetic coil, which is installed inside the limiting slot. A stator, a fixed iron core, is fitted inside the electromagnetic coil. When the electromagnetic coil is energized, the stator and the mover magnetically engage, pushing the mover outward. This invention uses a mover housed within a push plate, allowing it to engage with the electromagnetic coil and stator in the electromagnetic drive structure. When the electromagnetic coil is energized, the mover is pushed outward, thereby driving the push plate outward. The push plate then pushes out the reusable meters awaiting sorting into the limiting slot, allowing them to enter their corresponding category. Here, each limiting slot can be equipped with... An electromagnetic shield structure is provided for the electromagnetic coil to prevent mutual interference when adjacent electromagnetic coils are in operation. At the same time, due to the rotating structure of the rotating base, the wiring of the electromagnetic coil can be realized through conductive slip rings. The conductive slip ring, also known as a current collector ring, is used in any electromechanical system that requires continuous rotation while transmitting power and signals from a fixed position to a rotating position. The slip ring can improve system performance, simplify system structure, and prevent wires from twisting during rotation. Its specific application and connection structure can be realized by existing technology, which should be known to those skilled in the art. This utility model does not limit it in this respect.

[0009] The present invention is further configured such that the alignment component includes alignment push plates, two of which are symmetrically arranged along the conveying direction of the feeding conveyor. An electric push rod is provided on the frame of the feeding conveyor, and the output end of the electric push rod is connected to the alignment push plate. During feeding, the recovered electricity meter is difficult to align itself when it is conveyed on the belt conveyor. This makes it difficult to achieve standardization in subsequent marking, image acquisition and other operations, affecting the accuracy of operation. Therefore, when the electricity meter runs to the position of the alignment push plate, the electric push rod can be activated. The electric push rod can control the movement of the alignment push plate, so that the alignment push plates on both sides push the electricity meter at the same time, thereby achieving the alignment of the electricity meter and improving the standardization of subsequent image acquisition and marking operations.

[0010] The present invention is further configured such that the image scanning component includes a first support frame, on which an industrial camera is mounted. The industrial camera acquires images of the recycled electricity meters during transport and transmits the acquired data to a PLC control system. The PLC control system then analyzes and judges the data to achieve preliminary classification of the recycled electricity meters.

[0011] The present invention is further configured such that the marking component includes a second support frame, on which a marking device is mounted, and a movable adjustment structure is provided between the marking device and the second support frame. After the data after the preliminary classification is fed back, when the meter moves to the marking device, the marking device is controlled to perform marking operations on the recycled meter according to the set classification information, so that the relevant information of the recycled meter can be conveniently obtained in the subsequent processing. The marking device preferably adopts existing laser marking equipment.

[0012] The present invention is further configured such that the movable adjustment structure includes a ball screw, which is mounted on a second support frame via a bearing seat. A screw nut and a screw motor are fitted on the ball screw, and the screw motor is driven by the ball screw. The marking device is mounted on the bottom end of the screw nut. When the screw motor is started, the operation of the ball screw can be controlled by the screw motor, thereby driving the movement of the screw nut and controlling the movement of the marking device. In this way, the marking position can be flexibly adjusted.

[0013] The present invention is further configured such that a movable groove is formed on the inner wall of the limiting slot, and movable sliders are provided on both sides of the push plate. The movable sliders slide within the movable groove, and a return spring is provided between them and the inner wall of the movable groove. After the electromagnetic coil is energized, a magnetic interaction is generated between the stator and the mover to control the push plate to move outward. During this process, the push plate will drive the movable sliders to move within the movable groove. The interaction between the movable sliders and the movable groove can improve the stability of the push plate when moving within the limiting slot. Afterward, when the electromagnetic coil is de-energized, the movable sliders can be automatically reset within the movable groove under the action of the return spring, thereby realizing the automatic reset of the push plate within the limiting slot for the next operation.

[0014] This invention is further configured such that each section of the upper surface of the rotating seat, within each movable slot, is equipped with a movable roller via a shaft and bearing. The push plate is located above the movable roller, and a protective rubber pad is provided on the surface of the push plate. After the recycled electricity meters have undergone image acquisition and marking operations, preliminary sorting and classification can be achieved within the PLC control system. Subsequently, under the action of the belt conveyor, when the electricity meters are transported to the tail end of the belt conveyor, one of the limit slots rotates to the position of the belt conveyor, so that the recycled electricity meters to be sorted will enter the corresponding limit slot and rotate with the rotating seat. During this process, the movable rollers are positioned... The placement of the retaining pad reduces the resistance as the reusable meter enters the limiting slot, and also reduces wear on the rotating seat, extending its service life. The protective pad prevents the meter from impacting the push plate when entering the limiting slot. The system also includes multiple feeding components arranged circumferentially around the rotating seat. When the limiting slot carrying the reusable meter rotates to the corresponding feeding component position, the push plate pushes the meter out, thus achieving automatic sorting. The feeding components can be equipped with existing technologies such as collection frames, feeding belt conveyors, or sliding guides, which will not be elaborated upon here.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This system achieves standardized pre-processing of the entire reuse meter process, improving the accuracy of subsequent operations. During the feeding conveyor, symmetrically arranged aligning push plates, driven by electric push rods, push and align the meters, solving the problem of inconsistent meter postures. Subsequently, an industrial camera captures images and transmits them to the PLC system for classification and judgment. The marking equipment marks the meters according to the classification information, and the marking position can be adjusted via a ball screw, providing a standardized basis for subsequent sorting and information traceability, ensuring the accuracy of operations at each stage.

[0017] 2. The sorting mechanism adopts an electromagnetic drive and rotational coordination design to achieve efficient automatic sorting. After the meter enters the limit slot of the rotating seat, it rotates with the meter. When it reaches the corresponding feeding position, the electromagnetic coil is energized, causing the stator and permanent magnet to magnetically engage, pushing the plate out of the meter to complete the sorting. The moving slider and moving groove improve the stability of the pushing plate, and the return spring achieves automatic reset. Combined with the moving roller to reduce drag and wear, it greatly improves sorting efficiency and equipment durability.

[0018] 3. The electromagnetic drive design optimizes the equipment's spatial layout and enhances installation flexibility. Compared to traditional electric push rods, this system achieves drive through the interaction of the mover built into the push plate and the electromagnetic coil and stator within the limit holder. This results in a more compact structure and significantly saves equipment space. Simultaneously, the rotating seat's annular array limit holder can adapt to various classification requirements, and the conductive slip ring solves the wiring problem for rotating components, enabling the equipment to adapt to different site layouts and providing greater installation adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a recycling meter sorting system according to this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of a recycling meter sorting system according to this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the sorting mechanism in this utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the overall structure of the sorting mechanism in this utility model. Figure 2 ;

[0023] Figure 5 This is a cross-sectional view of the installation structure of the push plate on the limiting seat in this utility model;

[0024] Figure 6 This is a schematic diagram of the installation structure of the marking equipment on the second support frame in this utility model.

[0025] The components represented by each number in the attached diagram are listed below: 1. Feeding conveyor; 2. Support base; 3. Rotating base; 4. Rotating motor; 5. Limiting bracket; 6. Limiting slot; 7. Push plate; 8. Moving element; 9. Electromagnetic coil; 10. Stator; 11. Alignment push plate; 12. Electric push rod; 13. First support frame; 14. Industrial camera; 15. Second support frame; 16. Marking equipment; 17. Ball screw; 18. Screw nut; 19. Screw motor; 20. Moving groove; 21. Moving slider; 22. Return spring; 23. Moving roller; 24. Protective rubber pad. Detailed Implementation

[0026] 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.

[0027] This utility model provides a technical solution: Please refer to Figures 1-6 A recycling meter sorting system includes a feeding conveyor 1, which is a belt conveyor. The feeding conveyor 1 is equipped with a leveling component, an image scanning component, and a marking component. A sorting mechanism is provided at the tail end of the feeding conveyor 1. The sorting mechanism includes a support base 2, which can be supported on the ground by support legs. A rotating seat 3 is rotatably mounted on the support base 2 through the cooperation of a shaft and a bearing. A rotating motor 4 is provided at the bottom end of the support base 2. The rotating motor 4 is connected to the rotating seat 3 by transmission. Multiple limit holders 5 are arranged in a circular array on the rotating seat 3. Limit holders 5 have limit slots 6. A push plate 7 is slidably installed in each limit slot 6. A mover 8 is provided inside the push plate 7. The mover 8 is a permanent magnet. An electromagnetic drive structure is provided on each limit holder 5 in conjunction with the mover 8.

[0028] Please see Figures 1-6 As one embodiment of this utility model: The electromagnetic drive structure of this utility model includes an electromagnetic coil 9, which is installed inside the limiting slot 5. A stator 10, which is a fixed iron core, is disposed inside the electromagnetic coil 9. When the electromagnetic coil 9 is energized, the stator 10 magnetically engages with the mover 8, pushing the mover 8 outward. This utility model uses a mover 8 disposed inside a push plate 7, which engages with the electromagnetic coil 9 and the stator 10 in the electromagnetic drive structure. When the electromagnetic coil 9 is energized, the mover 8 can be pushed outward, thereby driving the push plate 7 outward. The push plate 7 then pushes out the reusable meters waiting to be sorted into the limiting slot 6, allowing them to enter the corresponding category. Each set of limit holders 5 can be equipped with an electromagnetic protective cover structure to prevent mutual interference when adjacent electromagnetic coils 9 are in operation. At the same time, due to the rotating structure of the rotating seat 3, the wiring of the electromagnetic coil 9 can be realized through a conductive slip ring. The conductive slip ring is also called a current collector ring, slip ring, current collector ring, current collector ring, etc. It can be used in any electromechanical system that requires continuous rotation while transmitting power and signals from a fixed position to a rotating position. The slip ring can improve system performance, simplify system structure, and prevent wires from twisting during rotation. Its specific application and connection structure can be realized by existing technology, which should be known to those skilled in the art. This utility model does not limit it in this respect.

[0029] Please see Figures 1-6As one embodiment of this utility model: the alignment component of this utility model includes an alignment push plate 11. Two alignment push plates 11 are symmetrically arranged along the conveying direction of the feeding conveyor 1. An electric push rod 12 is provided on the frame of the feeding conveyor 1. The output end of the electric push rod 12 is connected to the alignment push plate 11. When feeding, the recovered electricity meter is difficult to align itself when it is conveyed on the belt conveyor. This makes it difficult to achieve standardization in subsequent marking, image acquisition and other operations, and affects the accuracy of operation. Therefore, when the electricity meter runs to the position of the alignment push plate 11, the electric push rod 12 can be activated. The electric push rod 12 can control the movement of the alignment push plate 11, so that the alignment push plates 11 on both sides push the electricity meter at the same time, thereby achieving the alignment of the electricity meter and improving the standardization of subsequent image acquisition and marking operations.

[0030] Please see Figures 1-6 As one embodiment of the present invention: the image scanning component of the present invention includes a first support frame 13, on which an industrial camera 14 is mounted. The industrial camera 14 acquires images of the recycled electricity meters during transportation and transmits the acquired data to the PLC control system. The PLC control system then analyzes and judges the data to achieve preliminary classification of the recycled electricity meters.

[0031] Please see Figures 1-6 As one embodiment of the present invention: the marking component of the present invention includes a second support frame 15, a marking device 16 is provided on the second support frame 15, and a movable adjustment structure is provided between the marking device 16 and the second support frame 15. After the data after the preliminary classification is fed back, when the meter moves to the marking device 16, the marking device 16 is controlled to perform marking operation on the recycled meter according to the set classification information, so that the relevant information of the recycled meter can be conveniently obtained in the subsequent processing. The marking device 16 preferably adopts an existing laser marking device.

[0032] Please see Figures 1-6 As one embodiment of this utility model: the movable adjustment structure of this utility model includes a ball screw 17, which is mounted on the second support frame 15 through a bearing seat. A screw nut 18 and a screw motor 19 are provided on the ball screw 17. The screw motor 19 is driven by the ball screw 17. The marking device 16 is installed at the bottom end of the screw nut 18. When the screw motor 19 is started, the operation of the ball screw 17 can be controlled by the screw motor 19, thereby realizing the movement drive of the screw nut 18 and controlling the movement of the marking device 16. In this way, the marking position can be flexibly adjusted.

[0033] In this invention, the surface of the ball screw 17 can be protected from dust by a corrugated cover.

[0034] Please see Figures 1-6 As one embodiment of this utility model: A movable groove 20 is provided on the inner wall of the limiting slot 6. Movable sliders 21 are provided on both sides of the push plate 7. The movable sliders 21 slide within the movable groove 20, and a return spring 22 is provided between them and the inner wall of the movable groove 20. After the electromagnetic coil 9 is energized, a magnetic interaction is generated between the stator 10 and the mover 8 to control the push plate 7 to move outward. During this process, the push plate 7 will drive the movable sliders 21 to move within the movable groove 20. The interaction between the movable sliders 21 and the movable groove 20 can improve the stability of the push plate 7 when moving within the limiting slot 6. Afterward, when the electromagnetic coil 9 is de-energized, the movable sliders 21 can automatically reset within the movable groove 20 under the action of the return spring 22, thereby achieving automatic reset of the push plate 7 within the limiting slot 6 for the next operation.

[0035] Please see Figures 1-6 As one embodiment of this utility model: In this utility model, the upper surface of the rotating seat 3 and the interval within each moving groove 20 are provided with moving rollers 23 through the cooperation of shafts and bearings. The push plate 7 is located above the moving rollers 23, and the surface of the push plate 7 is provided with protective rubber pads 24. After the recycled electricity meter completes operations such as image acquisition and marking, it can be initially sorted and classified in the PLC control system. Then, under the action of the belt conveyor, when the electricity meter is transported to the tail end of the belt conveyor, one of the limit slots 6 rotates to the position of the belt conveyor, so that the recycled electricity meter to be sorted will enter the corresponding limit slot 6 and rotate with the rotating seat 3. During this process, the setting of the moving rollers 23 can reduce the resistance of the recycled electricity meter entering the limit slot 6, and at the same time, it can reduce the wear of the recycled electricity meter on the rotating seat 3 and improve the service life of the rotating seat 3. Here, the setting of the protective rubber pads 24 can prevent the electricity meter from impacting the push plate 7 when entering the limit slot 6.

[0036] In summary:

[0037] In use, this utility model uses a feeding conveyor 1 to feed and transport the recycled electricity meters before sorting. Before the formal sorting, the meter is aligned by the alignment push plate 11. This makes the position of the recycled electricity meters more accurate and forms a standardized operation when collecting information and marking the recycled electricity meters in the future.

[0038] In this process, the industrial camera 14 first captures the image, and then collects and classifies the information of the collected reusable electricity meter according to the captured image and the set program (the classification information can be set in advance according to the specific situation of the existing reusable electricity meter, which can be achieved by existing technology, and will not be described in detail in this utility model) to determine the sorting direction of the reusable electricity meter in the future.

[0039] Afterwards, the PLC control system analyzes and determines the classification of the reuse meter, and then transmits the data to the marking device 16. When the reuse meter runs to the marking device 16, the corresponding marking operation is performed so that the classification and other relevant information of the reuse meter can be easily understood in subsequent operations.

[0040] Marking equipment 16 uses existing laser marking equipment and is an existing product;

[0041] Subsequently, under the action of the belt conveyor, when the electricity meter is transported to the tail end of the belt conveyor, one of the limit slots 6 rotates to the position of the belt conveyor, so that the reusable electricity meter to be sorted will enter the corresponding limit slot 6 and rotate with the rotating seat 3.

[0042] When rotated to the appropriate sorting and unloading position, the electromagnetic coil 9 is energized, so that the stator 10 and the mover 8 generate magnetic interaction to control the push plate 7 to move outward, pushing the reusable meter located in the limit slot 6 outward, thereby realizing convenient automatic sorting;

[0043] This utility model can arrange multiple feeding components around the periphery of the rotating seat 3. When the limiting slot 6 carrying the recycled electricity meter rotates to the position of the corresponding feeding component, the recycled electricity meter is pushed out by the push plate 7 according to the above process, thereby realizing the automatic sorting of the recycled electricity meter. Here, the feeding component can be set as a collection box, feeding belt conveyor, sliding guide chute and other existing technologies according to actual operation needs. This utility model will not elaborate on this. The attached drawings of this utility model only show the case where the feeding component is a belt conveyor.

[0044] During the above process, the push plate 7 will drive the movable slider 21 to move within the movable groove 20. The cooperation between the movable slider 21 and the movable groove 20 can improve the stability of the push plate 7 when it moves within the limiting slot 6.

[0045] Afterwards, when the electromagnetic coil 9 is de-energized, the movable slider 21 can be automatically reset in the movable groove 20 under the action of the reset spring 22, thereby realizing the automatic reset of the push plate 7 in the limit slot 6 for the next operation.

[0046] This utility model is easy to use and can realize automatic alignment of reuse meters, information collection and classification, and sorting after marking.

[0047] Furthermore, this utility model adopts a method of setting a mover 8 in the push plate 7 and cooperating to set an electromagnetic coil 9 and a stator 10 in the limiting bracket 5 to achieve electromagnetic cooperation. Compared with the existing technology that uses an electric push rod 12 to push, it saves equipment space and improves the flexibility of equipment installation.

[0048] In this utility model, the operation of related electrical components such as motors and electric push rods can be controlled by a PLC control system according to a set program. The specific working process and working principle of this utility model have been described in detail. Based on the above working process and working principle, those skilled in the art should know the specific circuit connection relationship and implement it through existing technology. Furthermore, the circuit connection relationship between related electrical components and the specific driver program are not the subject of protection of this utility model, and this utility model will not elaborate on them.

[0049] The specific wiring structure between the relevant electrical components in this utility model can be achieved by existing technology, and this utility model does not limit it.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A recycling meter sorting system, comprising a feeding conveyor (1), wherein the feeding conveyor (1) is a belt conveyor, characterized in that: The feeding conveyor (1) is equipped with a leveling component, an image scanning component, and a marking component. The tail end of the feeding conveyor (1) is equipped with a sorting mechanism. The sorting mechanism includes a support base (2). A rotating seat (3) is rotatably mounted on the support base (2) through the cooperation of a shaft and a bearing. A rotating motor (4) is provided at the bottom end of the support base (2). The rotating motor (4) is connected to the rotating seat (3) through a transmission. Multiple limit holders (5) are arranged in a circular array on the rotating seat (3). Limit holders (5) have limit slots (6). A push plate (7) is slidably installed in each limit slot (6). A mover (8) is provided inside the push plate (7). An electromagnetic drive structure is provided on each limit holder (5) in conjunction with the mover (8).

2. The recycling meter sorting system according to claim 1, characterized in that: The electromagnetic drive structure includes an electromagnetic coil (9), which is installed in the limiting seat (5). A stator (10) is provided inside the electromagnetic coil (9). When the electromagnetic coil (9) is energized, the stator (10) and the mover (8) are magnetically engaged, pushing the mover (8) outward.

3. The recycling meter sorting system according to claim 2, characterized in that: The alignment component includes an alignment push plate (11), two of which are symmetrically arranged along the conveying direction of the feeding conveyor (1). An electric push rod (12) is provided on the frame of the feeding conveyor (1), and the output end of the electric push rod (12) is connected to the alignment push plate (11).

4. The recycling meter sorting system according to claim 3, characterized in that: The image scanning assembly includes a first support frame (13) on which an industrial camera (14) is mounted.

5. A recycling meter sorting system according to claim 1, characterized in that: The marking assembly includes a second support frame (15), on which a marking device (16) is mounted, and a movable adjustment structure is provided between the marking device (16) and the second support frame (15).

6. A recycling meter sorting system according to claim 5, characterized in that: The movable adjustment structure includes a ball screw (17), which is mounted on the second support frame (15) via a bearing seat. A screw nut (18) and a screw motor (19) are fitted on the ball screw (17). The screw motor (19) is driven by the ball screw (17). The marking device (16) is installed at the bottom end of the screw nut (18).

7. A recycling meter sorting system according to claim 1, characterized in that: The inner wall of the limiting slot (6) is provided with a moving slot (20), and the two sides of the push plate (7) are provided with moving sliders (21). The moving sliders (21) slide in the moving slot (20), and a return spring (22) is provided between them and the inner wall of the moving slot (20).

8. A recycling meter sorting system according to claim 7, characterized in that: The upper surface of the rotating seat (3) and the interval within each moving groove (20) are provided with moving rollers (23) through the cooperation of shafts and bearings. The push plate (7) is located above the moving rollers (23), and the surface of the push plate (7) is provided with protective rubber pads (24).

Images