A detection tool for rapid feedback of road compaction

Abstract

The present invention discloses a detection tool for quickly feeding back the degree of road compaction, specifically relating to the technical field of road compaction detection, comprising a road roller and a main unit installed in the road roller for calculating road surface compaction data, wherein a support mechanism for supporting is provided on one side of the road roller. The present invention, through the corresponding coordinated use of various structures, can perform real-time detection of the road surface during operation, thereby improving detection accuracy, facilitating workers' understanding of the road surface compaction situation, and improving the convenience of performing road surface compaction detection. It can also avoid detection deviations caused by one part of the road surface being too tight and the rest being too loose, and can reflect the dynamic process of roadbed compaction, thereby saving construction time and detection time, and reflecting the overall compaction quality of the roadbed, improving the utilization rate of labor and machinery, saving costs, and being convenient to use while having good practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of road compaction detection, and more particularly to a detection tool for rapidly feeding back road compaction. Background Art

[0002] Subgrade compaction quality is the most important indicator in road construction standards. Only by fully compacting the subgrade and pavement can the subsequent strength and stability of the pavement be guaranteed, thereby extending the road's service life. Compaction, also known as tamping, refers to the ratio of the dry density of compacted soil or other construction materials to the standard maximum dry density, expressed as a percentage. Compaction is a key indicator for inspecting subgrade and pavement construction quality. Subgrade testing devices can be used to determine whether the subgrade compaction of a road section meets standards, thereby preventing subsequent pavement collapse or cracking due to hollow subgrade.

[0003] The invention patent with patent application number CN114137183A discloses a road subgrade compaction detection process, which is characterized in that it includes the following steps: step S1, designing a compaction detection device; step S2, before the detection, the detection personnel first pushes the entire detection device to the designated detection position and fixes it, and then electrically connects the first mechanical switch, the second mechanical switch, the bump, the solenoid valve, the object identifier and the laser ranging sensor to the external controller; step S3, during the detection, the detection personnel operates the external controller to make the first mechanical switch and the second mechanical switch; step S4, when the sample passes through the solenoid valve, the object identifier detects the sample passing through the inside of the solenoid valve, and at the same time the laser ranging sensor also detects the downward movement distance of the sliding support plate; step S5, when the sliding sampling mechanism moves to the lowermost side, the push column mechanism presses down the first hook, and at this time the first hook rotates downward and disengages from the second hook; step S6, the sample obtained in step S5 is detected.

[0004] The above structure has the following problems when in use: Since roads are generally long, if the sampling detection method is adopted during roadbed construction, not only will the sampling and testing time be too long, but the sampling detection will not reflect the overall compaction quality of the roadbed, it will also consume a lot of manpower and financial resources, and will also cause damage to the roadbed. Summary of the Invention

[0005] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too simple and provides a solution that is significantly different from the existing technology. In order to overcome the above-mentioned shortcomings of the existing technology, the present invention provides a detection tool that quickly feedbacks the road compaction degree. It is intended to solve the above-mentioned problem that due to the generally long roads, if the sampling detection method is adopted during the roadbed construction, not only the sampling and testing time is too long, but the sampling detection cannot reflect the overall compaction quality of the roadbed, and it also consumes a lot of manpower and financial resources, and at the same time causes damage to the roadbed.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a detection tool for rapidly feeding back road compaction data, comprising a road roller and a host computer installed in the road roller for calculating road compaction data; a support mechanism is provided on one side of the road roller; a detection mechanism for real-time detection is provided within the support mechanism; and a limit seat is provided within the detection mechanism;

[0007] The supporting mechanism comprises:

[0008] Two mounting slots, each of which is respectively provided on both sides of the inner wall of the support mechanism;

[0009] A plurality of slide grooves, each of which is respectively provided on both sides of the surface of the installation groove;

[0010] The detection mechanism includes:

[0011] A pressing cylinder, which is arranged in the middle of the supporting mechanism and is hollow;

[0012] Two trays are respectively arranged at two ends of the inner cavity of the pressing cylinder.

[0013] Preferably, the support mechanism further comprises:

[0014] A plurality of arc support blocks, each of which is arranged in two mounting grooves in a group of two;

[0015] A plurality of damping springs, one end of each damping spring is fixed to the corresponding arc support block, and the other end of the damping spring is fixedly connected to the inner wall of the mounting groove;

[0016] The cross-sectional shape of the arc support blocks is set to be arc-shaped, and each group of arc support blocks is symmetrically arranged about the central axis of the installation groove.

[0017] Preferably, the support mechanism further comprises:

[0018] A plurality of sliders, one end of each slider is fixedly connected to the corresponding arc support block, and the other end of each slider extends into the slide groove and is slidably connected to the slide groove;

[0019] Two connecting shafts, each of which is respectively arranged between each set of arc support blocks, and a bearing is provided between the connecting shaft and the arc support blocks;

[0020] The ends of the two connecting shafts are both arranged on the pallet and fixedly connected to the pallet.

[0021] Preferably, the detection mechanism further comprises:

[0022] A plurality of reinforcing rods, each of which is distributed on the pallet along the circumference of the pallet's axis;

[0023] A plurality of slots, each of which is distributed on the pressing cylinder along the circumference of the axis of the pressing cylinder;

[0024] The clamping slot matches the reinforcing rod, the reinforcing rod is clamped with the clamping slot, and the outer side of the tray contacts the inner wall of the pressing cylinder.

[0025] Preferably, the detection mechanism further comprises:

[0026] A plurality of measuring plates, each of which is distributed in the slot along the circumference of the axis of the pressing cylinder;

[0027] A plurality of limit springs, each limit spring being arranged in groups of two at both ends of the measuring plate;

[0028] The two ends of the limit spring are fixedly connected to the reinforcing rod and the measuring plate respectively.

[0029] Preferably, the detection mechanism further comprises:

[0030] A plurality of through holes, each of the through holes being opened on the reinforcing rod along a line parallel to the reinforcing rod;

[0031] A plurality of sensing rods, each of the sensing rods being distributed on the measuring plate along a parallel line of the measuring plate;

[0032] A plurality of displacement sensors, each of which is distributed on the pallet along the circumference of the pallet's axis;

[0033] The sensing rod matches the through hole, and one end of the sensing rod extends into the through hole.

[0034] Preferably, a limiting seat is clamped between the two trays, a placement cavity is provided on the surface of the limiting seat, and a battery is arranged in the placement cavity.

[0035] Preferably, vibration sensors are provided on both sides of the top of the support mechanism, the vibration sensors are electrically connected to the main engine in the roller, and a connection seat connected to the roller is provided on one side of the surface of the support mechanism.

[0036] Technical effects and advantages of the present invention:

[0037] 1. When the present invention is in use, the roller drives the support mechanism and the detection mechanism to move, and the roller compacts the road surface. During the process of the road surface being compressed and deformed, the measuring plate contacts the protrusions or deformation areas generated by the road surface deformation. As a result, the measuring plate is displaced by the deformation generated by the road surface compaction, ensuring that the deformed road surface area can maintain contact with the roller, facilitating real-time detection of the road surface during operation.

[0038] 2. When the measuring plate of the present invention is displaced, it also drives the sensing rod to displace, causing the sensing rod to extend from the through hole, thereby causing one end of the sensing rod to move to the side of the displacement sensor. This facilitates the displacement sensor to detect the displacement stroke of the sensing rod, and conveniently determines the displacement stroke of the measuring plate caused by deformation when the measuring plate is compacted by the road surface. Furthermore, the height difference of the deformation caused by the compaction of the road surface is determined, thereby improving the accuracy of the detection of the present invention.

[0039] 3. The present invention continuously rotates the roller, thereby preventing the interference between the measuring plate and the original road surface from coming into contact. This allows the roller to continuously detect the road surface compaction in real time during its continuous rotation and displacement. Furthermore, the vibration sensor converts the known excitation force of the support mechanism and the roller into a resisting force of the roadbed during displacement. This is then converted into a simple chart by the software in the roller host, allowing workers to understand the road surface compaction situation, thereby improving the convenience of road surface compaction detection.

[0040] 4. When the pressure cylinder is continuously displaced and encounters a large interference, the present invention causes the two oppositely arranged arc brackets to move along the guide of the slide groove through the slider, and the damping spring is stressed. The connecting shaft is elastically driven by the slot itself to drive the tray to reset, thereby resetting the pressure cylinder, making it easier for the pressure cylinder to continuously contact the ground, and avoiding detection deviation caused by one part of the road being too tight and the other part being too loose.

[0041] To sum up, through the corresponding coordinated use of various structures, the overall design is simple and the structure is reasonable. It can continuously contact the deformation zone generated when the road surface is compacted, so that the present invention can perform real-time detection of the road surface during operation, thereby improving the detection accuracy, facilitating the staff to understand the compaction condition of the road surface, improving the convenience of compaction detection of the road surface, and avoiding detection deviation caused by one part of the road surface being too tight and the rest being too loose. It can reflect the dynamic process of roadbed compaction, not only saving construction time and detection time, but also reflecting the overall compaction quality of the roadbed, improving the utilization rate of manpower and machinery, saving costs, and being convenient to use while having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0043] Figure 2 It is a side view of the overall structure of the present invention.

[0044] Figure 3 This is a front view of the pressing cylinder of the present invention installed in the supporting mechanism.

[0045] Figure 4 It is a cross-sectional view of the internal structure of the pressing cylinder of the present invention.

[0046] Figure 5 It is the front view of the pressing cylinder of the present invention.

[0047] Figure 6 This is a front view of the reinforcing rod and tray of the present invention.

[0048] Figure 7 This is a front view of the tray and measuring plate of the present invention.

[0049] Figure 8 It is a front view of the support mechanism of the present invention.

[0050] The accompanying drawings are marked as follows: 1. roller; 2. supporting mechanism; 201. mounting groove; 202. slide groove; 203. arc support block; 204. damping spring; 205. slider; 206. connecting shaft; 3. detection mechanism; 301. pressing cylinder; 302. tray; 303. reinforcing rod; 304. slot; 305. measuring plate; 306. limit spring; 307. through hole; 308. sensing rod; 309. displacement sensor; 4. limit seat; 5. vibration sensor; 6. connecting seat; 7. battery. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] As attached Figure 1-8 A detection tool for quickly providing feedback on road compaction is shown, comprising a roller 1 and a host computer installed within the roller 1 for calculating road compaction data. A support mechanism 2 is provided on one side of the roller 1 for support, a detection mechanism 3 for real-time detection is provided within the support mechanism 2, and a limit seat 4 is provided within the detection mechanism 3.

[0053] The supporting mechanism 2 includes:

[0054] Two mounting grooves 201, each mounting groove 201 is respectively provided on both sides of the inner wall of the support mechanism 2;

[0055] A plurality of slide grooves 202, each of which is provided on both sides of the surface of the mounting groove 201;

[0056] Testing agency 3 includes:

[0057] The pressing cylinder 301 is arranged in the middle of the supporting mechanism 2 and is hollow;

[0058] Two trays 302 are respectively arranged at two ends of the inner cavity of the pressing cylinder 301.

[0059] Refer to the attached Figure 8 As shown, the support mechanism 2 also includes;

[0060] A plurality of arc support blocks 203, each arc support block 203 is arranged in two mounting grooves 201 in a group of two;

[0061] A plurality of damping springs 204, one end of each damping spring 204 is fixed to the corresponding arc support block 203, and the other end of the damping spring 204 is fixedly connected to the inner wall of the mounting groove 201;

[0062] The cross-sectional shape of the arc support blocks 203 is set to be arc-shaped, and each group of arc support blocks 203 is symmetrically arranged about the central axis of the mounting groove 201;

[0063] During use, the settings of the installation groove 201 and the sliding groove 202 can both play a transitional role, staggering the interference between the arc support block 203 and the support mechanism 2 during installation, so that the arc support block 203 can be installed on the support mechanism 2 in an embedded form. At the same time, through the setting of the damping spring 204, the arc support block 203 will be displaced when it is limited, and the damping spring 204 will be compressed. The damping spring 204 is driven to reset by its own elasticity, so as to reduce the top force when the arc support block 203 is limited and displaced.

[0064] Refer to the attached Figure 8 As shown, the support mechanism 2 also includes;

[0065] A plurality of sliders 205, one end of each slider 205 is fixedly connected to the corresponding arc support block 203, and the other end of the slider 205 extends into the slide groove 202 and is slidably connected to the slide groove 202;

[0066] Two connecting shafts 206, each connecting shaft 206 is respectively arranged between each set of arc support blocks 203, and a bearing is provided between the connecting shaft 206 and the arc support blocks 203;

[0067] The ends of the two connecting shafts 206 are both disposed on the tray 302 and fixedly connected to the tray 302;

[0068] When in use, the slider 205 and the slide groove 202 cooperate with each other to guide and limit the displacement stroke of the arc support block 203, thereby increasing the stability of the arc support block 203 during displacement. At the same time, through the setting of the connecting shaft 206, the tray 302 is conveniently installed in the support mechanism 2 with the connecting shaft 206 as the support point, and the bearing facilitates the rotation of the connecting shaft 206 and the tray 302, thereby facilitating the compaction of the road surface.

[0069] Refer to the attached Figure 3 、 4 , 5, 6, 7, the detection mechanism 3 also includes;

[0070] A plurality of reinforcing rods 303, each reinforcing rod 303 is distributed on the tray 302 along the circumference of the axis point of the tray 302;

[0071] A plurality of slots 304 are distributed on the pressing cylinder 301 along the circumference of the axis of the pressing cylinder 301;

[0072] The slot 304 matches the reinforcing rod 303, the reinforcing rod 303 is engaged with the slot 304, and the outer side of the tray 302 contacts the inner wall of the pressing cylinder 301;

[0073] It should be added that the slot 304 can serve as a transition for the reinforcing rod 303, staggering the interference between the reinforcing rod 303 and the pressing cylinder 301 during installation, so that the reinforcing rod 303 can be installed on the pressing cylinder 301 in an embedded form. At the same time, when the reinforcing rod 303 is connected to the slot 304, the outer side of the tray 302 will contact the inner wall of the pressing cylinder 301, thereby realizing the function of limiting the tray 302.

[0074] Refer to the attached Figure 3 、 4 , 5, 6, 7, the detection mechanism 3 also includes;

[0075] A plurality of measuring plates 305 are distributed in the slot 304 along the circumference of the axis of the pressing cylinder 301;

[0076] A plurality of limit springs 306 , each limit spring 306 is arranged in groups of two at both ends of the measuring plate 305 ;

[0077] The two ends of the limit spring 306 are fixedly connected to the reinforcing rod 303 and the measuring plate 305 respectively;

[0078] During use, the setting of the measuring plate 305 and the limit spring 306 facilitates the pressure cylinder 301 to be affected by the ground protrusion and deformation during rotation, which will cause the measuring plate 305 to contact the interference on the travel path of the pressure cylinder 301, so that the limit spring 306 will be displaced in the slot 304 due to the limitation, thereby compressing the limit spring 306, and the elasticity of the limit spring 306 itself drives the measuring plate 305 to reset, so as to facilitate the detection of the compaction of the road surface, and realize the function of real-time detection of the compaction of the road surface when the pressure cylinder 301 is displaced.

[0079] Refer to the attached Figure 7 As shown, the detection mechanism 3 also includes;

[0080] A plurality of through holes 307, each of which is provided on the reinforcing rod 303 along a line parallel to the reinforcing rod 303;

[0081] A plurality of sensing rods 308 , each sensing rod 308 being distributed on the measuring plate 305 along a parallel line of the measuring plate 305 ;

[0082] A plurality of displacement sensors 309 , each of which is distributed on the tray 302 along the circumference of the axis point of the tray 302 ;

[0083] The sensing rod 308 matches the through hole 307, and one end of the sensing rod 308 extends into the through hole 307;

[0084] It should be added that the mutual coordination of the through hole 307, the sensing rod 308 and the displacement sensor 309 makes it convenient for the measuring plate 305 to drive the sensing rod 308 to extend from the through hole 307 when the measuring plate 305 is affected by the interference of the ground protrusion and deformation, so that one end of the sensing rod 308 is displaced to the side of the displacement sensor 309. The displacement sensor 309 with model ACT500 detects the displacement stroke of the sensing rod 308, thereby obtaining the displacement stroke of the measuring plate 305 caused by the deformation when the road surface is compacted, and then obtaining the deformation height difference caused by the road surface compaction.

[0085] Refer to the attached Figure 4 As shown, a limit seat 4 is clamped between the two trays 302, and a placement cavity is provided on the surface of the limit seat 4. A battery 7 is arranged in the placement cavity. The setting of the limit seat 4 can support the battery 7, making it convenient for the battery 7 to be installed in the pressing cylinder 301. At the same time, the setting of the battery 7 can provide power to the displacement sensor 309 during operation.

[0086] Refer to the attached Figure 1 、 2 As shown in Figures 8 and 9, vibration sensors 5 are provided on both sides of the top of the support mechanism 2. The vibration sensors 5 are electrically connected to the main machine in the roller 1. A connecting seat 6 connected to the roller 1 is provided on one side of the surface of the support mechanism 2. Through the vibration sensor 5 with model RS485, the known exciting force of the support mechanism 2 and the roller 301 during displacement can be converted into the resistance force of the roadbed, so that it can be converted into a simple chart through the software in the roller 1 and the main machine (not shown in the figure), so that the staff can understand the compaction condition of the road surface.

[0087] Working principle of the present invention: During installation, the worker installs the support mechanism 2 on the roller 1 through the connecting seat 6, and installs the detection mechanism 3 inside the support mechanism 2, so that when the roller 1 moves, the compacting cylinder 301 contacts the road surface to compact the road surface and detect the compaction degree at the same time;

[0088] During use, the roller 1 drives the support mechanism 2 and the detection mechanism 3 to move, and the roller 301 compacts the road surface. When the road surface is deformed by the pressure, the measuring plate 305 contacts the protrusions or deformation areas generated by the road surface deformation, thereby causing the measuring plate 305 to move due to the deformation generated by the road surface compaction, and at the same time compressing the limit spring 306.

[0089] When the measuring plate 305 is displaced, the sensing rod 308 is displaced as well, and the sensing rod 308 extends out of the through hole 307, so that one end of the sensing rod 308 is displaced to the side of the displacement sensor 309. The displacement sensor 309 detects the displacement of the sensing rod 308, thereby determining the displacement of the measuring plate 305 caused by the deformation of the road surface, and further determining the height difference of the deformation caused by the road surface compaction.

[0090] The continuous rotation of the pressing cylinder 301 causes the measuring plate 305 to stop contacting the interference point with the original road surface, so that the measuring plate 305 can be reset by the limit spring 306. In this way, during the continuous rotation and displacement of the pressing cylinder 301, the present invention can continuously detect the road surface compaction degree in real time, and convert the known exciting force of the support mechanism 2 and the pressing cylinder 301 into the resistance force of the roadbed through the vibration sensor 5 during the displacement, so that it can be converted into a simple chart by the software in the main body of the roller 1, so that the staff can understand the road surface compaction condition.

[0091] And when the interference encountered during the continuous displacement of the pressure cylinder 301 is large, the pressure cylinder 301 is displaced in the support mechanism 2, and at the same time, the two relatively arranged arc support blocks 203 are displaced along the guide of the slide groove 202 through the slider 205, and the damping spring 204 is subjected to force, and the connecting shaft 206 is elastically driven by the slot 304 itself to drive the tray 302 to reset, thereby resetting the pressure cylinder 301, making it convenient for the pressure cylinder 301 to be in continuous contact with the ground, and avoiding the detection deviation caused by one part of the road being too tight and the rest being too loose.

[0092] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0093] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0094] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detection tool for quickly feeding back road compaction, comprising a road roller (1) and a host computer installed in the road roller (1) for calculating road compaction data, characterized in that: A support mechanism (2) for supporting is provided on one side of the roller (1); a detection mechanism (3) for real-time detection is provided inside the support mechanism (2); and a limit seat (4) is provided inside the detection mechanism (3); The supporting mechanism (2) comprises: Two mounting grooves (201), each of the mounting grooves (201) is respectively provided on both sides of the inner wall of the support mechanism (2); A plurality of slide grooves (202), each of the slide grooves (202) is respectively opened on both sides of the surface of the installation groove (201); The detection mechanism (3) comprises: A pressing cylinder (301), the pressing cylinder (301) is arranged in the middle of the supporting mechanism (2), and the pressing cylinder (301) is arranged to be hollow; Two trays (302), each tray (302) is respectively arranged at two ends of the inner cavity of the pressing cylinder (301); The detection mechanism (3) further comprises: A plurality of reinforcing rods (303), each of the reinforcing rods (303) being distributed on the tray (302) along the circumference of the axis point of the tray (302); A plurality of slots (304), each of the slots (304) being distributed on the pressing cylinder (301) along the circumference of the axis of the pressing cylinder (301); The clamping groove (304) matches the reinforcing rod (303), the reinforcing rod (303) is clamped with the clamping groove (304), and the outer side of the tray (302) contacts the inner wall of the pressing cylinder (301); The detection mechanism (3) further comprises: A plurality of measuring plates (305), each of the measuring plates (305) is distributed in the slot (304) along the circumference of the axis of the pressing cylinder (301); A plurality of limit springs (306), wherein the limit springs (306) are arranged in groups of two at both ends of the measuring plate (305); The two ends of the limit spring (306) are fixedly connected to the reinforcing rod (303) and the measuring plate (305) respectively; The detection mechanism (3) further comprises: A plurality of through holes (307), each of the through holes (307) is opened on the reinforcing rod (303) along a parallel line of the reinforcing rod (303); A plurality of sensing rods (308), each of the sensing rods (308) being distributed on the measuring plate (305) along a parallel line of the measuring plate (305); A plurality of displacement sensors (309), each of the displacement sensors (309) being distributed on the tray (302) along the circumference of the axis point of the tray (302); The sensing rod (308) matches the through hole (307), and one end of the sensing rod (308) extends into the through hole (307).

2. A rapid feedback road compaction detection tool according to claim 1, characterized in that: The support mechanism (2) further comprises: A plurality of arc support blocks (203), wherein the arc support blocks (203) are arranged in two mounting grooves (201) in a group of two; A plurality of damping springs (204), one end of each damping spring (204) being fixed to a corresponding arc support block (203), and the other end of the damping spring (204) being fixedly connected to the inner wall of the mounting groove (201); The cross-sectional shape of the arc support blocks (203) is set to be arc-shaped, and each group of arc support blocks (203) is symmetrically arranged about the central axis of the installation groove (201).

3. The rapid feedback detection tool for road compaction according to claim 2, characterized in that: The support mechanism (2) further comprises: A plurality of sliders (205), one end of each slider (205) is fixedly connected to a corresponding arc support block (203), and the other end of each slider (205) extends into the slide groove (202) and is slidably connected to the slide groove (202); Two connecting shafts (206), each connecting shaft (206) is respectively arranged between each group of arc support blocks (203), and a bearing is provided between the connecting shaft (206) and the arc support blocks (203); The ends of the two connecting shafts (206) are both arranged on the tray (302) and fixedly connected to the tray (302).

4. The rapid feedback road compaction detection tool according to claim 1, characterized in that: A limiting seat (4) is clamped between the two trays (302), and a placement cavity is provided on the surface of the limiting seat (4), in which a battery (7) is arranged.

5. The rapid feedback detection tool for road compaction according to claim 1, characterized in that: Vibration sensors (5) are provided on both sides of the top of the support mechanism (2), and the vibration sensors (5) are electrically connected to the main machine in the roller (1). A connection seat (6) connected to the roller (1) is provided on one side of the surface of the support mechanism (2).

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