Paver with pedestrian protection reminding function

Abstract

The utility model belongs to the technical field of pavement construction engineering equipment, particularly relates to a paver with a pedestrian protection reminding function, and solves the problems that pedestrians and drivers cannot be reminded in time when the pedestrians enter a working range by mistake, and large potential safety hazards exist. The paver with the pedestrian protection reminding function comprises a vehicle body, a hopper is arranged at the front end of the vehicle body, a paving device is arranged at the rear end of the vehicle body, a protection warning mechanism extends out of the front portion of the hopper, and the protection warning mechanism is connected with the vehicle body through a telescopic mechanism. The protection warning mechanism is used for retracting to the position below the hopper when feeding is conducted on the front side of the hopper. And when a pedestrian enters the working range by mistake, a warning can be given in time, so that the safety is relatively high.

Description

Technical Field

[0001] The utility model belongs to the technical field of road construction engineering equipment, and particularly relates to a paver with a pedestrian protection reminder function. Background Technique

[0002] A paver is a special mechanical equipment used in road construction and maintenance projects, mainly used for evenly laying asphalt mixture or other road surface materials on the roadbed.

[0003] In the prior art, a hopper and a paving device are respectively arranged on the front and rear sides of most pavers, and operators often need to pay attention to both ends. This also means that the driver may not be able to timely discover pedestrians in the traveling direction of the paver, and most pavers lack corresponding reminder and protection structures, which brings great potential safety hazards to paving construction. Content of the Utility Model

[0004] The purpose of the utility model is to provide a paver with a pedestrian protection reminder function for the above problems existing in the prior art.

[0005] In order to achieve the purpose of the utility model, the following technical solutions can be adopted:

[0006] A paver with a pedestrian protection reminder function includes a vehicle body main body. A hopper is arranged at the front end of the vehicle body main body, and a paving device is arranged at the rear end. A protection and warning mechanism extends forward in front of the hopper. The protection and warning mechanism is connected to the vehicle body main body through a telescopic mechanism, and is used to retract the protection and warning mechanism under the hopper when feeding materials on the front side of the hopper.

[0007] The paver of the utility model is used for paving operations. Among them, the vehicle body main body is the basic structure of the entire paver. The hopper is located at the front end of the vehicle body main body and is mainly used for loading materials to be paved, such as asphalt or concrete. The paving device is used to specifically lay the materials conveyed from the hopper evenly on the road surface. The above are prior arts and will not be specifically elaborated. In this paver, a protection and warning mechanism is also specially provided to provide warning in front of the hopper to prevent pedestrians or obstacles from being crushed or collided. The telescopic mechanism is used to connect the protection and warning mechanism and the vehicle body main body, so that the protection and warning mechanism can be extended or retracted as needed. When feeding materials on the front side of the hopper, the protection and warning mechanism can be retracted under the hopper to facilitate the normal progress of feeding. When protection reminder is required after feeding is completed, the protection and warning mechanism can be extended to ensure construction safety.

[0008] In the above paver with a pedestrian protection reminder function, the protective warning mechanism includes an H-shaped mounting frame. The telescopic mechanism includes a sliding connection structure arranged between the inner end of the mounting frame and the hopper. The outer end of the mounting frame is provided with a protective rod and a reminder structure. A telescopic drive assembly is arranged between the mounting frame and the bottom of the hopper.

[0009] The mounting frame is a frame structure, shaped like the letter "H", used to fix and support the protective rod and the reminder structure. The H-shaped design has higher structural strength. The inner end of the mounting frame is arranged at the bottom of the hopper through a sliding connection structure, enabling the mounting frame to move smoothly in a horizontal telescopic manner, capable of stretching or retracting as needed to adapt to different working scenarios. The protective rod is arranged at the outer end of the mounting frame to form a physical barrier in front of the hopper to prevent pedestrians or other objects from entering the non-safe range and to give a timely reminder and warning through collision. The reminder structure is also arranged at the outer end of the mounting frame and can use warning signals in the form of lights, sounds or other forms to remind the surrounding people to pay attention to safety. The telescopic drive assembly is connected between the mounting frame and the bottom of the hopper to provide the driving force for the telescopic movement of the mounting frame.

[0010] In the above paver with a pedestrian protection reminder function, the sliding connection structure includes two mounting seats arranged at the bottom of the hopper. Sliding mounting holes are provided on the mounting seats, and the two side rods of the mounting frame are respectively inserted into the sliding mounting holes.

[0011] The number of mounting seats and the side rods of the mounting frame are adapted to ensure sufficient mounting stability. Sliding mounting holes are provided on each mounting seat, and the side rods are inserted into the sliding mounting holes to achieve an axially telescopic sliding connection. Of course, the size and shape of the side rods match the sliding mounting holes to ensure a tight and flexible fit between the two.

[0012] In the above paver with a pedestrian protection reminder function, the telescopic drive assembly includes a drive cylinder with the cylinder body fixed to the bottom of the hopper. The output end of the drive cylinder is fixedly connected to the middle of the middle rod of the U-shaped connecting piece, and the ends of the U-shaped connecting piece are fixed to the cross bar of the mounting frame.

[0013] The U-shaped connecting piece is used to transmit the action of the drive cylinder to the mounting frame to achieve its telescopic function. The output end of the drive cylinder is fixedly connected to the middle of the middle rod of the U-shaped connecting piece, ensuring a stable connection between the two. The drive cylinder is common knowledge, and its specific structure and installation details are not specifically elaborated.

[0014] In the above paver with a pedestrian protection reminder function, an elastic buffer structure is provided between the protective rod and the mounting bracket. The elastic buffer structure includes a mounting blind hole formed at the outer end of the side rod of the mounting bracket. The outer end of the connecting rod is fixed with the protective rod, and the inner end is inserted into the mounting blind hole. An elastic member is provided between the connecting rod and the mounting blind hole, and an anti-disengagement structure is provided between the outer end of the side rod and the connecting rod.

[0015] The mounting blind hole is used for inserting the connecting rod, and its diameter matches that of the connecting rod to ensure that the connecting rod can be stably inserted therein. The connecting rod is used to connect the protective rod and the mounting bracket. The elastic member is arranged between the connecting rod and the mounting blind hole and is used to provide buffering when the protective rod is impacted. By absorbing the impact force from the outside, it reduces the harm to pedestrians and protects the paver itself from damage. The anti-disengagement structure is used to prevent the connecting rod from disengaging from the mounting blind hole.

[0016] In the above paver with a pedestrian protection reminder function, a limiting convex ring is provided on the rod body of the connecting rod. A circular step with a step surface facing the limiting convex ring is provided at the bottom of the mounting blind hole. The elastic member includes a spring. The spring is sleeved on the connecting rod and is compressed between the limiting convex ring and the circular step. The end of the connecting rod is inserted into the circular step.

[0017] The spring is sleeved on the connecting rod and is located between the limiting convex ring and the circular step. When an external force acts on the protective rod, the spring is compressed, thereby providing a buffering effect. The end of the connecting rod is inserted into the circular step of the mounting blind hole, ensuring the stable positioning of the connecting rod.

[0018] In the above paver with a pedestrian protection reminder function, the anti-disengagement structure includes an annular anti-disengagement cover. The inner diameter of the anti-disengagement cover is adapted to the outer diameter of the rod body of the connecting rod but is smaller than the outer diameter of the limiting convex ring. The anti-disengagement cover is fixed to the outer end of the side rod by bolts; the anti-disengagement cover is formed by splicing two semi-circular parts.

[0019] The anti-disengagement cover is an annular structure that closely sleeves on the connecting rod but cannot pass through the limiting convex ring, achieving the effect of preventing the connecting rod from disengaging from the mounting blind hole, ensuring the stability of the connecting rod and the protective rod. The anti-disengagement cover is fixed to the outer end of the side rod of the mounting bracket by bolts and has detachability, facilitating the disassembly and assembly of the connecting rod. The anti-disengagement cover is a split structure, simplifying the installation process and enabling the installation of the anti-disengagement cover even when the connecting rod has already been inserted into the mounting blind hole.

[0020] In the above paver with a pedestrian protection reminder function, a pressing detection component is provided at the inner bottom of the circular step. The pressing detection component is connected to the reminder structure and is used to give a timely reminder to the driver and pedestrians when the protective rod is touched and pressed in by a distance exceeding a preset length.

[0021] The pressing detection component is arranged at the inner bottom of the annular step and is used to detect the distance that the protection rod is touched and pressed in. When the protection rod is subjected to an external force and is pressed in by more than a preset length, the pressing detection component will be activated, thereby triggering the operation of the reminder structure, and corresponding warnings can be given in time to improve safety. The pressing detection component therein is common knowledge and will not be specifically elaborated.

[0022] In the above-mentioned paver with a pedestrian protection reminder function, the reminder structure includes an air jet pipe arranged between the mounting frame and the protection rod. The air jet pipe is fixed to the mounting frame through a detachable structure and is arranged parallel to the protection rod. A number of air jet holes facing forward and upward are evenly distributed along the axial direction of the air jet pipe, and the air jet pipe is connected to a high-pressure gas generating component.

[0023] The air jet pipe is fixed to the mounting frame through a detachable structure, which is convenient for installation and disassembly. The air jet pipe is connected to a high-pressure gas generating component, and air flow is ejected through the air jet holes. This air flow covers a certain area in front of the protection rod, which can attract the attention of pedestrians and play an obvious warning role, and will not cause harm to pedestrians. The high-pressure gas generating component therein is common knowledge and will not be specifically elaborated.

[0024] In the above-mentioned paver with a pedestrian protection reminder function, the detachable structure includes a mounting groove arranged on the side rod of the mounting rod. The air jet pipe is stuck in the mounting groove, and a U-shaped hoop is arranged outside. Both ends of the U-shaped hoop are fixed to the mounting frame through bolts, and an elastic cushion layer is arranged on the inner arc surface of the U-shaped hoop; the reminder structure further includes a sound and light warning component, and the sound and light warning component is arranged on the vehicle body main body; in the driving area of the vehicle body main body, there are an air jet switch and a sound and light warning switch. The air jet switch is electrically connected to the high-pressure gas generating component, and the sound and light warning switch is electrically connected to the sound and light warning component, and is used to manually control the switch action of the reminder structure.

[0025] The air jet pipe is stuck in the mounting groove to realize the stable positioning of the air jet pipe. The air jet pipe is firmly connected to the mounting frame through a U-shaped hoop outside. This connection is detachable, which is convenient for the disassembly, installation and maintenance of the air jet pipe and the adjustment of the orientation angle of the air jet holes. The elastic cushion layer is used to protect the air jet pipe from damage and ensure the close contact between the hoop and the air jet pipe. To further improve the effectiveness of the warning reminder, a sound and light warning component is also arranged on the vehicle body main body, which can specifically be a high-brightness LED lamp, a buzzer or a voice alarm, etc., and is used to give corresponding warnings to pedestrians and drivers through sound and light. The air jet switch and the sound and light warning switch are used to switch the actions of the air jet warning and the sound and light warning, and have higher flexibility and controllability. The sound and light warning component, the sound and light warning switch and the air jet switch therein are common knowledge and will not be specifically elaborated.

[0026] Compared with the prior art, the utility model mainly has the following advantages:

[0027] 1. A protection and warning mechanism is provided in this paver, which is used to provide warning in front of the hopper to prevent pedestrians or obstacles from being run over or collided. The telescopic mechanism is used to connect the protection and warning mechanism with the vehicle body main body, so that the protection and warning mechanism can be extended or retracted as needed. When feeding is required on the front side of the hopper, the protection and warning mechanism can be retracted under the hopper to facilitate the normal progress of feeding. When protection reminder is required after the feeding is completed, the protection and warning mechanism can be extended to ensure construction safety.

[0028] 2. The installation blind hole is used for inserting the connecting rod, and its diameter matches that of the connecting rod to ensure that the connecting rod can be stably inserted therein. The connecting rod is used to connect the protection rod and the mounting bracket. The elastic member is arranged between the connecting rod and the installation blind hole and is used to provide buffering when the protection rod is impacted. By absorbing the impact force from the outside, it reduces the harm to pedestrians and protects the paver itself from damage. The anti-disengagement structure is used to prevent the connecting rod from disengaging from the installation blind hole.

[0029] 3. The anti-disengagement cover is of an annular structure, which tightly sleeves on the connecting rod but cannot pass through the limit convex ring, achieving the effect of preventing the connecting rod from disengaging from the installation blind hole and ensuring the stability of the connecting rod and the protection rod. The anti-disengagement cover is fixed to the outer end of the side rod of the mounting bracket by bolts and has detachability, facilitating the disassembly and assembly of the connecting rod. The anti-disengagement cover is of a split structure, simplifying the installation process, so that the anti-disengagement cover can be installed even when the connecting rod has been inserted into the installation blind hole.

[0030] 4. The pressing detection component is arranged at the inner bottom of the annular step and is used to detect the distance that the protection rod is touched and pressed in. When the protection rod is subjected to an external force and is pressed in by more than a preset length, the pressing detection component will be activated, thereby triggering the operation of the reminder structure, and corresponding warning can be given in time to improve safety. The pressing detection component among them is common knowledge and will not be specifically elaborated.

[0031] 5. The air injection pipe is fixed to the mounting bracket through a detachable structure, which is convenient for installation and disassembly. The air injection pipe is connected to the high-pressure gas generating component, and air flow is ejected through the air injection holes. The air flow covers a certain area in front of the protection rod, which can attract the attention of pedestrians, play an obvious warning role, and will not cause harm to pedestrians. The high-pressure gas generating component among them is common knowledge and will not be specifically elaborated.

[0032] 6. The air injection pipe is stuck in the installation groove to achieve the stable positioning of the air injection pipe. On the outside of the air injection pipe, it is firmly connected to the mounting bracket through a U-shaped hoop. This connection has detachability, which is convenient for the disassembly, installation and maintenance of the air injection pipe and for adjusting the orientation angle of the air injection holes.

[0033] 7. The vehicle body main body is also provided with an acoustic and optical warning component, which has multiple warning functions. The jet switch and the acoustic and optical warning switch are used to switch the actions of jet warning and acoustic and optical warning, and have higher flexibility and controllability. Description of the Drawings

[0034] Figure 1 is the front view schematic diagram of the overall structure provided by the present utility model;

[0035] Figure 2 is Figure 1 the enlarged detail view of part A in

[0036] Figure 3 is Figure 2 the enlarged detail view of part B in

[0037] Figure 4 is the left view schematic diagram provided by the present utility model;

[0038] Figure 5 is the bottom view schematic diagram of the hopper and the protection warning mechanism provided by the present utility model;

[0039] Figure 6 is the cross-sectional view schematic diagram of the elastic buffer structure provided by the present utility model.

[0040] In the figure, vehicle body main body 1, hopper 11, paving device 12, protection warning mechanism 2, mounting bracket 21, protection rod 22, cross bar 23, side bar 24, telescopic mechanism 3, sliding connection structure 31, mounting seat 32, driving cylinder 33, U-shaped connecting piece 34, intermediate rod 35, reminder structure 4, jet pipe 41, detachable structure 42, mounting groove 43, U-shaped clamp 44, elastic cushion 45, elastic buffer structure 5, mounting blind hole 51, elastic member 52, connecting rod 53, limiting convex ring 54, annular step 55, pressing detection component 56, anti-disengagement structure 6, anti-disengagement cover 61, semi-circular split body 62. Detailed Description of the Preferred Embodiments

[0041] The following are specific embodiments of the present utility model and in conjunction with the drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0042] Specific embodiments are as Figures 1-6 shown. The paver with the pedestrian protection reminder function includes a vehicle body main body 1. A hopper 11 is provided at the front end of the vehicle body main body 1, and a paving device 12 is provided at the rear end. A protection warning mechanism 2 extends forward in front of the hopper 11. The protection warning mechanism 2 and the vehicle body main body 1 are connected by a telescopic mechanism 3, which is used to retract the protection warning mechanism 2 below the hopper 11 when loading materials on the front side of the hopper 11.

[0043] Specifically, the paver of the present utility model is used for paving operations. Among them, the vehicle body main body 1 is the basic structure of the entire paver. The hopper 11 is located at the front end of the vehicle body main body 1 and is mainly used for loading materials to be paved, such as asphalt or concrete. The paving device 12 is used to specifically lay the materials conveyed from the hopper 11 evenly on the road surface. In this paver, a protective warning mechanism 2 is particularly provided to provide a warning in front of the hopper 11 to prevent pedestrians or obstacles from being crushed or collided. The telescopic mechanism 3 is used to connect the protective warning mechanism 2 and the vehicle body main body 1, so that the protective warning mechanism 2 can be extended or retracted as needed. When feeding is required on the front side of the hopper 11, the protective warning mechanism 2 can be retracted under the hopper 11 to facilitate the normal progress of feeding. When the feeding is completed and protective reminder is required, the protective warning mechanism 2 can be extended to ensure construction safety.

[0044] As Figure 5 shown, the protective warning mechanism 2 includes an H-shaped mounting frame 21. The telescopic mechanism 3 includes a sliding connection structure 31 provided between the inner end of the mounting frame 21 and the hopper 11. The outer end of the mounting frame 21 is provided with a protective rod 22 and a reminder structure 4. A telescopic drive assembly is provided between the mounting frame 21 and the bottom of the hopper 11. The sliding connection structure 31 includes two mounting seats 32 provided at the bottom of the hopper 11. The mounting seats 32 are provided with sliding mounting holes, and the two side rods 24 of the mounting frame 21 are respectively inserted into the sliding mounting holes. The telescopic drive assembly includes a drive cylinder 33 with the cylinder body fixed to the bottom of the hopper 11. The output end of the drive cylinder 33 is fixedly connected to the middle of the middle rod 35 of the U-shaped connecting member 34, and the end of the U-shaped connecting member 34 is fixed to the cross bar 23 of the mounting frame 21.

[0045] Specifically, the mounting bracket 21 is of a frame structure, shaped like the letter "H", used to fix and support the protective rod 22 and the warning structure 4. The "H" shape design has higher structural strength. The inner end of the mounting bracket 21 is arranged at the bottom of the hopper 11 through the sliding connection structure 31, so that the mounting bracket 21 can perform smooth horizontal telescopic movement, and can be extended or retracted as needed to adapt to different working scenarios. The protective rod 22 is arranged at the outer end of the mounting bracket 21, used to form a physical barrier in front of the hopper 11 to prevent pedestrians or other objects from entering the non-safe range, and to give a timely reminder and warning through collision. The warning structure 4 is also arranged at the outer end of the mounting bracket 21, and can use warning signals in the form of lights, sounds or other forms to remind the surrounding personnel to pay attention to safety. The telescopic drive assembly is connected between the mounting bracket 21 and the bottom of the hopper 11, used to provide the driving force for the telescopic movement of the mounting bracket 21. The number of mounting seats 32 is adapted to the number of side rods 24 of the mounting bracket 21 to ensure sufficient mounting stability. A sliding mounting hole is provided on each mounting seat 32, and the side rod 24 is inserted into the sliding mounting hole to achieve axially telescopic sliding connection. Of course, the size and shape of the side rod 24 match the sliding mounting hole to ensure a tight and flexible fit between the two. The U-shaped connecting piece 34 is used to transmit the action of the driving cylinder 33 to the mounting bracket 21 to realize its telescopic function. The output end of the driving cylinder 33 is fixedly connected to the middle of the middle rod 35 of the U-shaped connecting piece 34 to ensure a stable connection between the two.

[0046] As Figure 2 , 6 shown, an elastic buffer structure 5 is provided between the protective rod 22 and the mounting bracket 21. The elastic buffer structure 5 includes a mounting blind hole 51 opened at the outer end of the side rod 24 of the mounting bracket 21. The outer end of the connecting rod 53 is fixed with the protective rod 22, and the inner end is inserted into the mounting blind hole 51. An elastic member 52 is provided between the connecting rod 53 and the mounting blind hole 51. An anti-disengagement structure 6 is provided between the outer end of the side rod 24 and the connecting rod 53. A limiting convex ring 54 is provided on the rod body of the connecting rod 53. The bottom of the mounting blind hole 51 is provided with an annular step 55 with a step surface facing the limiting convex ring 54. The elastic member 52 includes a spring. The spring is sleeved on the connecting rod 53 and is compressed between the limiting convex ring 54 and the annular step 55. The end of the connecting rod 53 is inserted into the annular step 55. The anti-disengagement structure 6 includes an annular anti-disengagement cover 61. The inner diameter of the anti-disengagement cover 61 is adapted to the outer diameter of the rod body of the connecting rod 53, but smaller than the outer diameter of the limiting convex ring 54. The anti-disengagement cover 61 is fixed to the outer end of the side rod 24 by bolts; the anti-disengagement cover 61 is formed by splicing two semi-circular parts 62.

[0047] Specifically, the installation blind hole 51 is used for inserting and mounting the connecting rod 53. Its diameter matches that of the connecting rod 53 to ensure that the connecting rod 53 can be stably inserted therein. The connecting rod 53 is used to connect the protective rod 22 and the mounting bracket 21. The elastic member 52 is arranged between the connecting rod 53 and the installation blind hole 51 and is used to provide buffering when the protective rod 22 is impacted. By absorbing the impact force from the outside, it reduces the harm to pedestrians and protects the paver itself from damage. The anti-disengagement structure 6 is used to prevent the connecting rod 53 from disengaging from the installation blind hole 51. The spring is sleeved on the connecting rod 53 and is located between the limit convex ring 54 and the annular step 55. When the protective rod 22 is subjected to an external force, the spring is compressed, thereby providing a buffering effect. The end of the connecting rod 53 is inserted into the annular step 55 of the installation blind hole 51, ensuring the stable positioning of the connecting rod 53. The anti-disengagement cover 61 is of an annular structure and is tightly sleeved on the connecting rod 53 but cannot pass through the limit convex ring 54, achieving the effect of preventing the connecting rod 53 from disengaging from the installation blind hole 51 and ensuring the stability of the connecting rod 53 and the protective rod 22. The anti-disengagement cover 61 is fixed to the outer end of the side rod 24 of the mounting bracket 21 by bolts and is detachable, facilitating the disassembly and assembly of the connecting rod 53. The anti-disengagement cover 61 is of a split structure, simplifying the installation process and enabling the installation of the anti-disengagement cover 61 even when the connecting rod 53 has already been inserted into the installation blind hole 51.

[0048] Furthermore, a pressing detection component 56 is provided at the inner bottom of the annular step 55. The pressing detection component 56 is connected to the reminder structure 4 and is used to give timely reminders to the driver and pedestrians when the protective rod 22 is touched and pressed into a distance exceeding the preset length.

[0049] Specifically, the pressing detection component 56 is arranged at the inner bottom of the annular step 55 and is used to detect the distance that the protective rod 22 is touched and pressed in. When the protective rod 22 is subjected to an external force and is pressed in by more than the preset length, the pressing detection component 56 will be activated, thereby triggering the operation of the reminder structure 4 and giving corresponding warnings in a timely manner to improve safety.

[0050] Such as Figure 3 、 5As shown, the reminder structure 4 includes an air jet pipe 41 disposed between the mounting bracket 21 and the guard bar 22. The air jet pipe 41 is fixed to the mounting bracket 21 through a detachable structure 42 and is arranged parallel to the guard bar 22. A number of air jet holes facing forward and upward are evenly distributed along the axial direction of the air jet pipe 41, and the air jet pipe 41 is connected to a high-pressure gas generating assembly. The detachable structure 42 includes a mounting groove 43 provided on the side rod 24 of the mounting rod. The air jet pipe 41 is stuck in the mounting groove 43, and a U-shaped hoop 44 is provided on the outside. Both ends of the U-shaped hoop 44 are fixed to the mounting bracket 21 through bolts, and an elastic cushion layer 45 is provided on the inner arc surface of the U-shaped hoop 44. The reminder structure 4 further includes an acoustic and optical warning assembly, which is arranged on the vehicle body main body 1. In the driving area of the vehicle body main body 1, an air jet switch and an acoustic and optical warning switch are provided. The air jet switch is electrically connected to the high-pressure gas generating assembly, and the acoustic and optical warning switch is electrically connected to the acoustic and optical warning assembly, for manually controlling the switching action of the reminder structure 4.

[0051] Specifically, the air jet pipe 41 is fixed to the mounting bracket 21 through the detachable structure 42, which is convenient for installation and disassembly. The air jet pipe 41 is connected to the high-pressure gas generating assembly, and air flow is ejected through the air jet holes. The air flow covers a certain area in front of the guard bar 22, which can attract the attention of pedestrians and play an obvious warning role without causing harm to pedestrians. The air jet pipe 41 is stuck in the mounting groove 43 to achieve the stable positioning of the air jet pipe 41. On the outside of the air jet pipe 41, a firm connection with the mounting bracket 21 is achieved through the U-shaped hoop 44. This connection is detachable, which is convenient for the disassembly, installation and maintenance of the air jet pipe 41 and the adjustment of the orientation angle of the air jet holes. The elastic cushion layer 45 is used to protect the air jet pipe 41 from damage and ensure the close contact between the hoop and the air jet pipe 41. To further improve the effectiveness of the warning reminder, an acoustic and optical warning assembly is also provided on the vehicle body main body 1, which is specifically a high-brightness LED lamp and a buzzer, for giving corresponding warnings to pedestrians and drivers in the form of sound and light. The air jet switch and the acoustic and optical warning switch are used to switch the actions of the air jet warning and the acoustic and optical warning, which have higher flexibility and controllability.

[0052] Specific working principle: During the paving operation, the paver moves forward. When a pedestrian in front accidentally enters the operation range, as the pedestrian gets closer, the guard bar 22 touches the pedestrian. As the pedestrian continues to intrude, the inner end of the connecting rod 53 and the pressure detection assembly cooperate, the air jet pipe 41 ejects gas, and at the same time, an acoustic and optical warning is issued to remind the pedestrian and the driver. The driver can timely turn off the air jet and the acoustic and optical warning actions. When necessary, the driver can also manually turn on the air jet and the acoustic and optical warning to give a warning in advance. When the hopper 11 is being loaded, the driving cylinder 33 acts, and the mounting bracket 21, the air jet pipe 41 and the guard bar 22 are retracted below the hopper 11. After the loading is completed, the driving cylinder 33 acts in the reverse direction and extends to reset.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A paving machine with a pedestrian protection reminder function, comprising a vehicle body (1), wherein the front end of the vehicle body (1) is provided with a hopper (11), and the rear end is provided with a paving device (12), characterized in that: A protective warning mechanism (2) extends out in front of the hopper (11); the protective warning mechanism (2) and the vehicle body (1) are connected via a telescopic mechanism (3) for retracting the protective warning mechanism (2) to below the hopper (11) when loading materials at the front side of the hopper (11).

2. The paver with pedestrian protection reminder function according to claim 1, characterized in that: The protective warning mechanism (2) comprises an H-shaped mounting frame (21), the telescopic mechanism (3) comprises a sliding connection structure (31) arranged between the inner end of the mounting frame (21) and the hopper (11), the outer end of the mounting frame (21) is provided with a protective rod (22) and a reminder structure (4), and a telescopic driving assembly is provided between the mounting frame (21) and the bottom of the hopper (11).

3. The paver with pedestrian protection reminder function according to claim 2, characterized in that: The sliding connection structure (31) comprises two mounting seats (32) arranged at the bottom of the hopper (11), the mounting seats (32) are provided with sliding mounting holes, and the two side rods (24) of the mounting frame (21) are respectively inserted into the sliding mounting holes.

4. The paver with pedestrian protection reminder function according to claim 2, characterized in that: The telescopic drive assembly comprises a drive cylinder (33) whose cylinder body is fixed to the bottom of the hopper (11); the output end of the drive cylinder (33) is fixedly connected to the middle of the intermediate rod (35) of the U-shaped connecting piece (34); and the end of the U-shaped connecting piece (34) is fixed to the cross bar (23) of the mounting frame (21).

5. The paver with pedestrian protection reminder function according to claim 2, characterized in that: An elastic buffer structure (5) is provided between the protective rod (22) and the mounting frame (21), and the elastic buffer structure (5) comprises a mounting blind hole (51) provided on the outer end of the side rod (24) of the mounting frame (21); the protective rod (22) is fixed to the outer end of the connecting rod (53), and the inner end is inserted into the mounting blind hole (51); an elastic member (52) is provided between the connecting rod (53) and the mounting blind hole (51); and an anti-slip structure (6) is provided between the outer end of the side rod (24) and the connecting rod (53).

6. The paver with pedestrian protection reminder function according to claim 5, characterized in that: The connecting rod (53) is provided with a limiting convex ring (54) on its rod body, and the bottom of the mounting blind hole (51) is provided with an annular step (55) with its step surface facing the limiting convex ring (54). The elastic member (52) comprises a spring, which is sleeved on the connecting rod (53) and compressed between the limiting convex ring (54) and the annular step (55). The end of the connecting rod (53) is inserted into the annular step (55).

7. The paver with pedestrian protection reminder function according to claim 6, characterized in that: The anti-detachment structure (6) comprises an annular anti-detachment cover (61), the inner diameter of which is adapted to the outer diameter of the connecting rod (53) but smaller than the outer diameter of the limiting convex ring (54), and the anti-detachment cover (61) is fixed to the outer end of the side rod (24) by bolts; the anti-detachment cover (61) is composed of two semicircular parts (62) assembled together.

8. The paver with pedestrian protection reminder function according to claim 6, characterized in that: A pressing detection assembly (56) is provided at the inner bottom of the annular step (55), and the pressing detection assembly (56) is connected to the reminder structure (4) and is used to promptly remind the driver and pedestrian when the protective rod (22) is touched and pressed into the protective rod for a distance exceeding a preset length.

9. The paver with pedestrian protection reminder function according to any one of claims 2 to 8, characterized in that: The reminder structure (4) comprises an air jet pipe (41) arranged between the mounting frame (21) and the protective rod (22); the air jet pipe (41) is fixed to the mounting frame (21) through a detachable structure (42) and is arranged parallel to the protective rod (22); a plurality of air jet holes facing forward and upward are evenly arranged on the air jet pipe (41) along the axial direction; and the air jet pipe (41) is connected to a high-pressure gas generating assembly.

10. The paver with pedestrian protection reminder function according to claim 9, characterized in that: The detachable structure (42) comprises a mounting groove (43) arranged on the side rod (24) of the mounting rod, the jet pipe (41) is stuck in the mounting groove (43), and a U-shaped clamp (44) is arranged on the outside, the two ends of the U-shaped clamp (44) are fixed to the mounting frame (21) by bolts, and an elastic cushion layer (45) is arranged on the inner arc surface of the U-shaped clamp (44); The reminder structure (4) further comprises an audible and visual warning component, wherein the audible and visual warning component is arranged on the vehicle body (1); An air jet switch and an audible and visual warning switch are provided in the driving area of ​​the vehicle body (1); the air jet switch is electrically connected to the high-pressure gas generating component; the audible and visual warning switch is electrically connected to the audible and visual warning component, and is used to manually control the switching action of the reminder structure (4).

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