Roller

Abstract

Embodiments of the present invention provide a road roller, which relates to the technical field of construction machinery. The road roller includes a vehicle frame, a steering fork frame, a roller, and a heat preservation and protection device. Among them, the steering fork frame is rotatably connected to the vehicle frame, the roller is connected to the steering fork frame, and the heat preservation and protection device is covered outside the roller for heat preservation of the roller. The heat preservation and protection device is installed on the steering fork frame to rotate with the steering fork frame. Since the heat preservation and protection device rotates with the steering fork frame, the road roller can effectively avoid interference between the roller and the heat preservation and protection device during steering, and the steering is more flexible. Moreover, the longitudinal cross-sections of the first heat preservation cover and the second heat preservation cover are both arc-shaped, and the formed semi-closed space is small, with good heating and heat preservation effects. The road roller also has a collision sensing function, which can achieve anti-collision emergency stop sensing, without the need to additionally install an anti-collision device, saving costs, and at the same time can avoid major construction accidents and improve construction safety.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and more particularly, to a road roller. Background Art

[0002] A pneumatic-tyred roller is a road roller with tyre-mounted drums. When a pneumatic-tyred roller is used for construction on an asphalt road surface, if there is a large temperature difference between the tyre surface and the construction road surface, the phenomenon that the asphalt adheres to the tyre surface will occur, resulting in uneven road compaction. Therefore, it is necessary to heat the tyre surface to avoid the phenomenon of poor compaction. Without thermal insulation protection, due to the influence of factors such as heat convection, it is impossible to ensure that the temperature of the tyre surface is within a reasonable range, and the temperature difference control cannot achieve an ideal effect.

[0003] In the related art, the thermal insulation device of a pneumatic-tyred roller is fixedly installed on the frame by side plates. This installation method makes it easy for the tyre to interfere with the thermal insulation device during steering. Summary of the Invention

[0004] An object of the present invention is to provide a road roller that can effectively avoid interference between the drum and the thermal insulation protection device during steering.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a road roller, including: a frame, a steering fork, a drum, and a thermal insulation protection device; the steering fork is rotatably connected to the frame, the drum is connected to the steering fork, the thermal insulation protection device covers the outside of the drum and is used for thermal insulation of the drum, and the thermal insulation protection device is installed on the steering fork to rotate with the steering fork.

[0007] Further, in an alternative embodiment, the thermal insulation protection device includes a front thermal insulation cover assembly and a rear thermal insulation cover assembly, the front thermal insulation cover assembly and the rear thermal insulation cover assembly are movably connected and can jointly form an accommodation cavity for covering the drum, and one of the front thermal insulation cover assembly and the rear thermal insulation cover assembly is connected to the steering fork.

[0008] Further, in an alternative embodiment, the rear thermal insulation cover assembly is installed on the steering fork, one end of the front thermal insulation cover assembly is hinged to one end of the rear thermal insulation cover assembly, and the other end of the front thermal insulation cover assembly is detachably connected to the other end of the rear thermal insulation cover assembly.

[0009] Further, in an alternative embodiment, the front thermal insulation cover assembly can rotate relative to the rear thermal insulation cover assembly in a horizontal plane to open the accommodation cavity or form the accommodation cavity by splicing.

[0010] Further, in an alternative embodiment, the thermal insulation and protection device further includes a lock device assembly. The front thermal insulation cover assembly includes a first thermal insulation cover, a first end plate and a second end plate respectively connected to both ends of the first thermal insulation cover. The rear thermal insulation cover assembly includes a second thermal insulation cover, a third end plate and a fourth end plate respectively connected to both ends of the second thermal insulation cover. The first end plate is hinged to the third end plate, and the second end plate is detachably connected to the fourth end plate through the lock device assembly.

[0011] Further, in an alternative embodiment, the longitudinal cross-sections of the first thermal insulation cover and the second thermal insulation cover are both arc-shaped, and the first thermal insulation cover and the second thermal insulation cover are jointly spliced to form a cover body structure, and the cover body structure matches the outer contour of the roller.

[0012] Further, in an alternative embodiment, heat insulation layers are provided on the inner walls of the front thermal insulation cover assembly and the rear thermal insulation cover assembly.

[0013] Further, in an alternative embodiment, the road roller further includes a deflection sensing device. The thermal insulation and protection device is pivotally connected to the steering fork. The deflection sensing device is arranged between the steering fork and the thermal insulation and protection device for detecting the deflection angle of the thermal insulation and protection device relative to the steering fork and triggering an emergency stop signal when the deflection angle exceeds a preset deflection angle threshold.

[0014] Further, in an alternative embodiment, the deflection sensing device includes a sensor mounting seat, a deflection sensor and a deflection induction plate. The sensor mounting seat is fixedly connected to the steering fork. The deflection induction plate is fixedly connected to the thermal insulation and protection device. The deflection sensor is arranged on the sensor mounting seat for detecting the angle of deflection of the deflection induction plate to obtain the deflection angle of the thermal insulation and protection device relative to the steering fork.

[0015] Further, in an alternative embodiment, the deflection sensing device further includes a deflection torsion spring, a hinge shaft, a first torsion spring limiting shaft and a second torsion spring limiting shaft. The hinge shaft, the first torsion spring limiting shaft and the second torsion spring limiting shaft are all arranged on the steering fork. The deflection induction plate is rotationally matched with the hinge shaft. The deflection torsion spring is sleeved on the hinge shaft, and both ends of the deflection torsion spring are respectively connected to the first torsion spring limiting shaft and the second torsion spring limiting shaft.

[0016] The beneficial effects of the road roller provided by the embodiment of the present invention include: Since the thermal insulation and protection device is installed on the steering fork, when the road roller steers, the steering fork rotates relative to the vehicle frame, driving the roller to steer, and the thermal insulation and protection device rotates together with the steering fork. Therefore, it can effectively avoid interference between the roller and the thermal insulation and protection device during steering. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the roller provided by the embodiment of the present invention from the first perspective;

[0019] Figure 2 It is a schematic structural diagram of the roller provided by the embodiment of the present invention from the second perspective;

[0020] Figure 3 It is a partial structural diagram of the steering fork of the roller provided by the embodiment of the present invention;

[0021] Figure 4 It is Figure 3 The partial enlarged view of the A position in

[0022] Icon: 1 - Roller; 11 - Frame; 12 - Steering fork; 13 - Roller wheel; 10 - Thermal insulation and protection device; 100 - Thermal insulation front cover assembly; 110 - First thermal insulation cover; 111 - Avoidance groove; 120 - First end plate; 130 - Second end plate; 200 - Thermal insulation rear cover assembly; 210 - Second thermal insulation cover; 220 - Third end plate; 230 - Fourth end plate; 300 - Hinge; 400 - Lock device assembly; 50 - Deflection sensing device; 510 - Sensor mounting seat; 520 - Deflection sensor; 530 - Deflection induction plate; 540 - Deflection torsion spring; 550 - Hinge shaft; 560 - First torsion spring limiting shaft; 570 - Second torsion spring limiting shaft. Specific embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further definition and explanation thereof is not required in subsequent figures.

[0026] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0027] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they should not be construed as indicating or implying relative importance.

[0028] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0029] A pneumatic-tyred roller is a roller with pneumatic tyres as its rolling wheels. When a pneumatic-tyred roller is used for construction on an asphalt road surface, if the temperature difference between the tyre surface and the construction road surface is large, the phenomenon that the asphalt adheres to the tyre surface will occur, resulting in uneven road compaction. Therefore, it is necessary to heat the tyre surface to avoid the phenomenon of poor compaction. If there is no heat insulation protection, due to the influence of factors such as heat convection, it is impossible to ensure that the temperature of the tyre surface is within a reasonable range, and the temperature difference control cannot reach the ideal effect. In the related art, the heat insulation device of the pneumatic-tyred roller is installed on the frame by fixedly connecting the side plates. This installation method is prone to interference between the tyre and the heat insulation device during steering. Therefore, the embodiments of the present invention provide a roller for improving the problem of interference between its rolling wheel and the heat insulation device.

[0030] Please refer to Figure 1 and Figure 2 , this embodiment provides a roller 1, which can be a pneumatic-tyred roller or other types of rollers 1. The roller 1 includes a frame 11, a steering fork 12, a rolling wheel 13, and a heat insulation protection device 10. Among them, the steering fork 12 is rotatably connected to the frame 11. The rolling wheel 13 is connected to the steering fork 12. The heat insulation protection device 10 covers the outside of the rolling wheel 13 and is used for heat insulation of the rolling wheel 13. The heat insulation protection device 10 is installed on the steering fork 12 to rotate with the steering fork 12.

[0031] The steering fork 12 is used to achieve steering. In this embodiment, the steering fork 12 is installed at the front of the frame 11 and can rotate relative to the frame 11, thereby driving the rolling wheel 13 to turn to achieve the steering of the roller 1.

[0032] In this embodiment, the rolling wheel 13 is a tire, such as an inflated tire. The rolling wheels 13 provided at the front part of the frame 11 are front wheels, and there are multiple front wheels. The rolling wheels 13 provided at the rear part of the frame 11 are rear wheels, and there are multiple rear wheels. In this embodiment, the rolling wheel 13 as the front wheel is connected to the steering fork frame 12 installed at the front part of the frame 11. The rolling wheel 13 can be directly connected to the steering fork frame 12, or can be connected to the steering fork frame 12 through the heat preservation and protection device 10.

[0033] Since the heat preservation and protection device 10 of the road roller 1 provided in this embodiment is installed on the steering fork frame 12, when the road roller 1 steers, the steering fork frame 12 rotates relative to the frame 11, driving the rolling wheel 13 to steer, and the heat preservation and protection device 10 rotates together with the steering fork frame 12. Therefore, it can effectively avoid interference between the rolling wheel 13 and the heat preservation and protection device 10 during steering.

[0034] Furthermore, the heat preservation and protection device 10 may include a front heat preservation cover assembly 100 and a rear heat preservation cover assembly 200. Among them, the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 are movably connected and can jointly enclose a containing cavity for covering the rolling wheel 13, and one of the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 is connected to the steering fork frame 12.

[0035] It should be noted that the front heat preservation cover assembly 100 is arranged in front of the rear heat preservation cover assembly 200 and is used to cover the front half of the rolling wheel 13, and the rear heat preservation cover assembly 200 is used to cover the rear half of the rolling wheel 13. The front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 are jointly spliced to enclose a containing cavity for covering the rolling wheel 13. The movable connection between the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 can adopt a rotational connection or a sliding connection, as long as the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 can move relative to each other to open the containing cavity or be joined together to form the containing cavity.

[0036] Optionally, in this embodiment, the rear heat preservation cover assembly 200 is installed on the steering fork frame 12, one end of the front heat preservation cover assembly 100 is hinged to one end of the rear heat preservation cover assembly 200, and the other end of the front heat preservation cover assembly 100 is detachably connected to the other end of the rear heat preservation cover assembly 200. In this way, the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 are hinged at the ends, which can facilitate the opening of the front heat preservation cover assembly 100, with simple opening and convenient maintenance.

[0037] In this embodiment, the heat preservation and protection device 10 further includes a hinge 300, and one end of the front heat preservation cover assembly 100 is hinged to one end of the rear heat preservation cover assembly 200 through the hinge 300.

[0038] Furthermore, the front heat-insulating cover assembly 100 can rotate relative to the rear heat-insulating cover assembly 200 in the horizontal plane to open the accommodating cavity or form the accommodating cavity by splicing. That is to say, the rotating shaft of the hinge 300 is vertically arranged, and the front heat-insulating cover assembly 100 rotates around the hinge 300 in the horizontal plane. In this way, when opening the front heat-insulating cover assembly 100, it can be very convenient and the opening is simple.

[0039] The heat-insulating and protecting device 10 may further include a lock device assembly 400. One end of the front heat-insulating cover assembly 100 away from the hinge 300 is detachably connected to one end of the rear heat-insulating cover assembly 200 away from the hinge 300 through the lock device assembly 400. That is to say, when the front heat-insulating cover assembly 100 rotates around the hinge 300 to be spliced with the rear heat-insulating cover assembly 200, the front heat-insulating cover assembly 100 is locked to the rear heat-insulating cover assembly 200 through the lock device assembly 400, so that the front heat-insulating cover assembly 100 and the rear heat-insulating cover assembly 200 are relatively fixed; when it is necessary to open the front heat-insulating cover assembly 100, open the lock device assembly 400, and then rotate the front heat-insulating cover assembly 100 to open the accommodating cavity. In this way, both opening and locking are very convenient. In addition, the lock device assembly 400 is provided with an opening handle, which is convenient to open on the side of the roller 1.

[0040] Furthermore, the front heat-insulating cover assembly 100 may include a first heat-insulating cover 110, a first end plate 120, and a second end plate 130. Among them, the first end plate 120 and the second end plate 130 are respectively connected to both ends of the first heat-insulating cover 110. The first heat-insulating cover 110 corresponds to the circumferential surface of the roller 13, the first end plate 120 corresponds to one end surface of the roller 13, and the second end plate 130 corresponds to the other end surface of the roller 13. In this embodiment, both the first end plate 120 and the second end plate 130 are roughly in the shape of half of a sector. The first heat-insulating cover 110 is integrally strip-shaped, and the longitudinal section of the first heat-insulating cover 110 is arc-shaped. An avoidance groove 111 is provided on the first heat-insulating cover 110. When the front heat-insulating cover assembly 100 and the rear heat-insulating cover assembly 200 are spliced, a part of the steering fork 12 is accommodated in the avoidance groove 111.

[0041] The rear heat-insulating cover assembly 200 may include a second heat-insulating cover 210, a third end plate 220, and a fourth end plate 230. Among them, the third end plate 220 and the fourth end plate 230 are respectively connected to both ends of the second heat-insulating cover 210. The second heat-insulating cover 210 is fixedly connected to the steering fork 12. The second heat-insulating cover 210 corresponds to the circumferential surface of the roller 13, the third end plate 220 corresponds to one end surface of the roller 13, and the fourth end plate 230 corresponds to the other end surface of the roller 13. In this embodiment, both the third end plate 220 and the fourth end plate 230 are roughly in the shape of half of a sector. The second heat-insulating cover 210 is integrally strip-shaped, and the longitudinal section of the second heat-insulating cover 210 is arc-shaped.

[0042] In this embodiment, the first end plate 120 is hinged to the third end plate 220. For example, the first end plate 120 and the third end plate 220 are hinged through a hinge 300. The second end plate 130 is detachably connected to the fourth end plate 230 through a lock device assembly 400.

[0043] When the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 are joined together, the first end plate 120 and the third end plate 220 jointly form a sector and correspond to one end of the roller 13 together. The second end plate 130 and the fourth end plate 230 jointly form a sector and correspond to the other end of the roller 13 together. The first heat preservation cover 110 and the second heat preservation cover 210 are jointly spliced to form a cover body structure. The longitudinal section of the cover body structure is arc-shaped, and the cover body structure matches the outer contour of the roller 13. It should be noted that the cover body structure matching the outer contour of the roller 13 means that the arc of the cover body structure and the circle of the outer contour of the roller 13 can be concentric circles, and the arc radius of the cover body structure is slightly larger than the circle radius of the roller 13. In this way, the distance between the cover body structure and the roller 13 is relatively small, so that the accommodation cavity formed by the joining of the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 is a relatively small semi-closed space, so that the energy utilization rate is higher, the heat is not easily dissipated, and the heat preservation effect is better. In the starting stage, the heating time can be greatly shortened, and the predetermined temperature can be reached faster.

[0044] In order to further improve the heat preservation effect, a heat insulation layer can be provided on the inner walls of the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200. The heat insulation layer can adopt heat insulation materials coated on the inner walls or other heat preservation sleeves installed on the inner walls.

[0045] In addition, in the related art, the tire roller 1 has a large external dimension and limited front vision. The installation method of the heat preservation device fixedly connected to the frame by side plates does not consider collision protection. When the front sealing plate collides with an object in front, the heat preservation cover is easily deformed and damaged.

[0046] Please refer to Figure 3 and Figure 4 , in order to improve the problem of collision protection of the roller 1, the roller 1 provided in this embodiment may further include a deflection sensing device 50. Among them, the heat preservation protection device 10 is pivotally connected to the steering fork 12, and the deflection sensing device 50 is arranged between the steering fork 12 and the heat preservation protection device 10 for detecting the deflection angle of the heat preservation protection device 10 relative to the steering fork 12 and triggering an emergency stop signal when the deflection angle exceeds a preset deflection angle threshold.

[0047] When a collision occurs with an object in front, the entire thermal insulation protection device 10 deflects, triggering the deflection sensing device 50 to send an emergency stop signal, and the equipment brakes urgently, thereby avoiding a collision accident. Among them, the emergency stop signal triggered by the deflection sensing device 50 can be transmitted to the equipment braking system to make the equipment braking system brake, or it can be transmitted to the controller of the roller 1, and the controller controls the equipment braking system to brake.

[0048] Further, the deflection sensing device 50 may include a sensor mounting seat 510, a deflection sensor 520, a deflection induction plate 530, a deflection torsion spring 540, a hinge shaft 550, a first torsion spring limiting shaft 560, and a second torsion spring limiting shaft 570. Among them, the sensor mounting seat 510 is fixedly connected to the steering fork 12. Optionally, the sensor mounting seat 510 can be welded to the steering fork 12 or fixed to the steering fork 12 by bolts. The sensor mounting seat 510 is generally L-shaped. The deflection induction plate 530 is fixedly connected to the thermal insulation protection device 10. Optionally, the deflection induction plate 530 can be welded to the thermal insulation rear cover assembly 200. In this embodiment, the deflection induction plate 530 is fixedly connected to the second thermal insulation cover 210, and one end of the deflection induction plate 530 extends between the sensor mounting seat 510 and the steering fork 12. The deflection sensor 520 is disposed on the sensor mounting seat 510 for detecting the deflection angle of the deflection induction plate 530 to obtain the deflection angle of the thermal insulation protection device 10 relative to the steering fork 12. It should be understood that since the deflection induction plate 530 is fixed to the thermal insulation rear cover assembly 200, the deflection angle of the deflection induction plate 530 can directly reflect the deflection angle of the thermal insulation protection device 10. It should be noted that the deflection sensor 520 is used to detect the deflection angle, and an angle sensor in related technologies can be used. The specific detection principle can refer to related technologies and will not be elaborated here as long as it can detect the deflection angle of the thermal insulation protection device 10.

[0049] In addition, the hinge shaft 550, the first torsion spring limiting shaft 560, and the second torsion spring limiting shaft 570 are all disposed on the steering fork 12. The deflection induction plate 530 is rotationally matched with the hinge shaft 550, so that the thermal insulation rear cover assembly 200 forms a rotating pair with the steering fork 12 through the deflection induction plate 530 and the hinge shaft 550. The deflection torsion spring 540 is sleeved on the hinge shaft 550, and the two ends of the deflection torsion spring 540 are respectively connected to the first torsion spring limiting shaft 560 and the second torsion spring limiting shaft 570. The first torsion spring limiting shaft 560 and the second torsion spring limiting shaft 570 respectively limit the deflection torsion spring 540. The deflection torsion spring 540 can play a certain role in resetting the thermal insulation rear cover assembly 200.

[0050] When the road roller 1 is working, when the front heat preservation cover assembly 100 collides with an object in front, the rear heat preservation cover assembly 200 drives the deflection induction plate 530 to rotate. The deflection sensor 520 senses the position change and issues an emergency stop signal, thereby realizing an emergency brake and avoiding a collision accident, greatly improving the construction safety performance of the whole machine.

[0051] In summary, for the road roller 1 provided by the embodiment of the present invention, since the heat preservation and protection device 10 is installed on the steering fork 12, when the road roller 1 steers, the steering fork 12 rotates relative to the vehicle frame 11, driving the roller 13 to steer, and the heat preservation and protection device 10 rotates together with the steering fork 12. Therefore, it can effectively avoid interference between the roller 13 and the heat preservation and protection device 10 during steering, and the steering is more flexible.

[0052] Moreover, the front heat preservation cover assembly 100 and the rear heat preservation cover assembly 200 are movably connected through the hinge 300 and can be opened from the side of the road roller 1, which is convenient for maintenance.

[0053] In addition, the longitudinal sections of the first heat preservation cover 110 and the second heat preservation cover 210 are both arc-shaped, and the formed semi-closed space is small, with good heating and heat preservation effects.

[0054] The road roller 1 also has a collision sensing function, which can realize anti-collision emergency stop sensing, without the need to additionally install an anti-collision device, saving costs, and at the same time can avoid major construction accidents and improve construction safety.

[0055] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A road roller, characterized in that, Comprising: a frame (11), a steering fork frame (12), a rolling wheel (13), and a heat preservation and protection device (10); the steering fork frame (12) is rotatably connected to the frame (11), the rolling wheel (13) is connected to the steering fork frame (12), the heat preservation and protection device (10) covers the outside of the rolling wheel (13) for heat preservation of the rolling wheel (13), and the heat preservation and protection device (10) is installed on the steering fork frame (12) to rotate with the steering fork frame (12); a deflection sensing device (50), the heat preservation and protection device (10) is pivotally connected to the steering fork frame (12), and the deflection sensing device (50) is arranged between the steering fork frame (12) and the heat preservation and protection device (10) for detecting the deflection angle of the heat preservation and protection device (10) relative to the steering fork frame (12) and triggering an emergency stop signal when the deflection angle exceeds a preset deflection angle threshold; wherein, the rolling wheel (13) is a tire.

2. The road roller according to claim 1, characterized in that, The heat preservation and protection device (10) includes a front heat preservation cover assembly (100) and a rear heat preservation cover assembly (200), the front heat preservation cover assembly (100) and the rear heat preservation cover assembly (200) are movably connected and can jointly form an accommodating cavity for covering the rolling wheel (13), and one of the front heat preservation cover assembly (100) and the rear heat preservation cover assembly (200) is connected to the steering fork frame (12).

3. The road roller according to claim 2, characterized in that, The rear heat preservation cover assembly (200) is installed on the steering fork frame (12), one end of the front heat preservation cover assembly (100) is hinged to one end of the rear heat preservation cover assembly (200), and the other end of the front heat preservation cover assembly (100) is detachably connected to the other end of the rear heat preservation cover assembly (200).

4. The road roller according to claim 3, characterized in that, The front heat preservation cover assembly (100) can rotate relative to the rear heat preservation cover assembly (200) in a horizontal plane to open the accommodating cavity or form the accommodating cavity by splicing.

5. The road roller according to claim 3, characterized in that, The heat preservation and protection device (10) further includes a lock device assembly (400), the front heat preservation cover assembly (100) includes a first heat preservation cover (110), a first end plate (120) and a second end plate (130) respectively connected to both ends of the first heat preservation cover (110), the rear heat preservation cover assembly (200) includes a second heat preservation cover (210), a third end plate (220) and a fourth end plate (230) respectively connected to both ends of the second heat preservation cover (210), the first end plate (120) is hinged to the third end plate (220), and the second end plate (130) is detachably connected to the fourth end plate (230) through the lock device assembly (400).

6. The road roller according to claim 5, characterized in that, The longitudinal sections of the first heat preservation cover (110) and the second heat preservation cover (210) are both arc-shaped, and the first heat preservation cover (110) and the second heat preservation cover (210) jointly form a cover body structure, and the cover body structure matches the outer contour of the rolling wheel (13).

7. The road roller according to any one of claims 2 - 6, characterized in that, Heat insulation and heat preservation layers are provided on the inner walls of the front heat preservation cover assembly (100) and the rear heat preservation cover assembly (200).

8. The road roller according to any one of claims 1 to 6, characterized in that, The deflection sensing device (50) includes a sensor mounting base (510), a deflection sensor (520), and a deflection induction plate (530). The sensor mounting base (510) is fixedly connected to the steering fork frame (12), the deflection induction plate (530) is fixedly connected to the heat preservation and protection device (10), and the deflection sensor (520) is disposed on the sensor mounting base (510) for detecting the deflection angle of the deflection induction plate (530) to obtain the deflection angle of the heat preservation and protection device (10) relative to the steering fork frame (12).

9. The road roller according to claim 8, characterized in that, The deflection sensing device (50) further includes a deflection torsion spring (540), a hinge shaft (550), a first torsion spring limiting shaft (560), and a second torsion spring limiting shaft (570). The hinge shaft (550), the first torsion spring limiting shaft (560), and the second torsion spring limiting shaft (570) are all disposed on the steering fork frame (12). The deflection induction plate (530) is rotationally matched with the hinge shaft (550). The deflection torsion spring (540) is sleeved on the hinge shaft (550), and the two ends of the deflection torsion spring (540) are respectively connected to the first torsion spring limiting shaft (560) and the second torsion spring limiting shaft (570).

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