A device and method for predicting road traffic flow

Abstract

The application discloses a kind of road traffic flow equipment and prediction method, comprising: base, fixedly arranged in the pit; Install seat, slidingly arranged on base to make the detection component exposed outside pit of install seat top surface arrangement;Lifting assembly, including screw lifting column and driving rod rotationally arranged on install seat, the screw lifting column is threadedly cooperated with base.The road traffic flow equipment and prediction method provided by the application, install seat is installed on base by screw lifting column, when base is fixedly installed in the pit of road surface, install seat can be vertically lifted relative to base by driving screw lifting column to rotate to make detection component height on install seat top surface be adjusted to be flush with road surface to avoid forming wrong table, without strictly controlling the excavation depth of artificial pit, in turn, it is convenient to quickly install and adjust the use of device.

Description

Technical Field

[0001] This invention relates to the field of traffic flow measurement technology, and more specifically to a device and method for predicting road traffic flow. Background Technology

[0002] With the increasing number of motor vehicles in my country, real-time traffic information is becoming increasingly important for urban management. Road traffic flow detection is essential for traffic information dissemination and flow surveys.

[0003] According to publication number CN215341409U, publication date: December 28, 2021, a traffic flow detection device is disclosed, which includes a mounting box pre-embedded in the ground. The upper surface of the mounting box is open. A control box is connected inside the mounting box, and a pressure sensor is connected to the control box. The sensing surface of the pressure sensor is facing upward. A vertically arranged support spring is fixedly connected to the bottom plate of the mounting box, and a docking plate is connected to the top of the support spring. A horizontally arranged pressure plate is connected to the mounting box, and the pressure plate covers the opening of the mounting box. A connecting component for stably connecting the pressure plate and the docking plate is connected to the pressure plate. Sliding grooves are respectively opened on the two opposite inner side walls of the mounting box, and the sliding grooves extend to the upper surface of the mounting box. The end of the pressure plate slides in the sliding groove. The horizontal inner side wall of the sliding groove and the sensing surface of the pressure sensor are on the same horizontal plane. This application has the effect of facilitating the maintenance and replacement of the pressure sensor.

[0004] In the prior art, including the aforementioned patent, traffic flow is detected using a ground-embedded detection device. That is, the installation box is installed in a transverse trench dug in the road surface so that the pressure-sensitive sensor detection surface of the control box is flush with the road surface. When a vehicle drives across the road surface, it passes through the pressure-sensitive sensor detection surface to trigger and count. However, since the height of the installation box cannot be freely adjusted, the installation height of the pressure-sensitive sensor detection surface at the top of it depends on the depth of the pit dug manually, which is inconvenient for the installation of the equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for predicting road traffic flow, which solves the problem of inconvenient installation caused by the non-adjustable height of existing ground-embedded detection devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device and method for predicting road traffic flow, comprising:

[0007] The base is fixedly installed inside the tunnel;

[0008] The mounting base is slidably mounted on the base so that the detection components mounted on the top surface of the mounting base are exposed outside the tunnel;

[0009] The lifting assembly comprises a threaded lifting column rotatably arranged on the mounting seat and a driving rod, and the threaded lifting column is threadedly matched with the base.

[0010] As preferred, the lifting column seat symmetrically arranged on the mounting seat with respect to the detection assembly is further included, the lifting column seat is threadedly matched with the driving rod, and the lifting column seat is slidingly arranged on the mounting seat.

[0011] As preferred, the lateral abutting plate abutting against the side wall of the tunnel is horizontally slidingly arranged on the mounting seat, and the distance from the lateral abutting plate to the starting position of the sliding path is the expansion joint.

[0012] As preferred, the sliding connecting block coupled / decoupled with the driving rod is arranged on the lateral abutting plate.

[0013] As preferred, the lifting assembly further comprises a first transmission gear and a second transmission gear meshing with each other, the first transmission gear is coupled / decoupled with the driving rod, and the second transmission gear is drivingly connected with the threaded lifting column.

[0014] As preferred, the threaded connecting portion threadedly matched with the lifting column seat is arranged on the driving rod, and the threaded connecting portion is opposite to the threaded direction of the threaded lifting column.

[0015] As preferred, the switching assembly comprising an adjusting rod slidingly arranged in the driving rod in the vertical direction is further included, the adjusting rod is arranged with a ring-shaped portion, the driving rod is arranged with a ring-shaped movable slot, the ring-shaped portion is movably arranged in the ring-shaped movable slot, and the adjusting rod is movably arranged for switching among the following three working positions:

[0016] The first working position: the ring-shaped portion is located in the middle of the ring-shaped movable slot, the first transmission gear is coupled with the driving rod, and the sliding connecting block is decoupled with the driving rod;

[0017] The second working position: the ring-shaped portion is located at the lower end of the ring-shaped movable slot, the first transmission gear is decoupled with the driving rod, and the sliding connecting block is coupled with the driving rod;

[0018] The third working position: the ring-shaped portion is located at the upper end of the ring-shaped movable slot, the first transmission gear is coupled with the driving rod, and the sliding connecting block is coupled with the driving rod.

[0019] As preferred, the flexible rubber ring with an arc-shaped cross section is arranged on the second transmission gear, the oil storage cavity and the communication port connected with the oil storage cavity and facing the upper arc surface of the flexible rubber ring are arranged in the second transmission gear, and the first transmission gear is separated from the driving rod to push the flexible rubber ring to deform to expose the communication port.

[0020] As preferred, the sliding connecting block is vertically slidably arranged on the lateral abutting plate, and a columnar part is arranged on the sliding connecting block, a plurality of arc-shaped movable grooves are arranged on the rotating part of the driving rod, and the adjusting rod pushes the columnar part to slide into the arc-shaped movable groove at the third station, the lateral abutting plate drives the columnar part to slide horizontally and is matched with the sliding in the arc-shaped movable groove to drive the driving rod to rotate.

[0021] A road traffic flow prediction method comprises the road traffic flow device in the above scheme, and the specific steps are as follows:

[0022] S1, the detection assembly is arranged in the pit of the road surface through the base and the mounting seat, so that the detection assembly is flush with the road surface, when a vehicle drives along the road surface and passes through the detection assembly, the detection assembly is triggered and counted under pressure, and the single vehicle completely passes through the detection assembly and triggers the counting of the detection assembly twice due to the tire spacing;

[0023] S2, the counting number of the detection assembly from 7:00 to 9:00 in the morning peak period is divided by two to obtain the morning peak traffic flow data of the road section, and the value can be measured multiple times on different days to obtain the average morning peak traffic flow data value;

[0024] S3, the detection counting number from 17:00 to 19:00 in the evening peak period is divided by two to obtain the evening peak traffic flow data of the road section, and the value can be measured multiple times on different days to obtain the average evening peak traffic flow data value;

[0025] S4, the counting number of the detection assembly within 24 hours of a day is divided by two to obtain the traffic flow data of the road section of the day, and the traffic flow data of the day is divided by twenty-four to obtain the average hourly traffic flow data of the day, and the value can be measured multiple times on different days to obtain the average daily traffic flow data value or the average hourly traffic flow data.

[0026] In the above technical scheme, the road traffic flow device and the prediction method provided by the application have the following beneficial effects: the mounting seat is installed on the base through the screw lifting column, when the base is fixedly installed in the pit of the road surface, the screw lifting column is rotated by the driving rod to vertically move the mounting seat relative to the base, and the height of the detection assembly on the top surface of the mounting seat is adjusted to be flush with the road surface to avoid forming a wrong table, so that the excavation depth of the artificial pit is not strictly controlled, and the device is convenient to quickly install and adjust and use. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings.

[0028] Figure 1 The overall structural schematic diagram provided for the embodiments of the present application is shown in the figure.

[0029] Figure 2 The local enlarged schematic diagram at A provided for the embodiments of the present application is shown in the figure.

[0030] Figure 3 The overall structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure.

[0031] Figure 4 The structural cross-sectional schematic diagram at the driving rod provided for the embodiments of the present application is shown in the figure.

[0032] Figure 5 The exploded structural schematic diagram of the control assembly, the driving rod and the lifting column base provided for the embodiments of the present application is shown in the figure.

[0033] Figure 6 The structural schematic diagram of the driving rod provided for the embodiments of the present application is shown in the figure.

[0034] Figure 7 The local enlarged schematic diagram at B provided for the embodiments of the present application is shown in the figure.

[0035] Figure 8 The local enlarged schematic diagram at C provided for the embodiments of the present application is shown in the figure.

[0036] Figure 9 The local enlarged schematic diagram at D provided for the embodiments of the present application is shown in the figure.

[0037] Figure 10 The local enlarged schematic diagram at E provided for the embodiments of the present application is shown in the figure.

[0038] Figure 11 The local enlarged schematic diagram at F provided for the embodiments of the present application is shown in the figure.

[0039] Explanation of reference signs:

[0040] 1, base; 2, installation seat; 31, shielding plate; 32, pressure sensor; 33, counter; 34, lifting column seat; 4, lifting assembly; 41, threaded lifting column; 411, first ring gear part; 42, drive rod; 421, annular movable groove; 422, rotating part; 4221, through groove; 4222, arc movable groove; 423, mounting end; 424, threaded connection part; 43, first transmission gear; 431, movable end; 44, second transmission gear; 441, oil storage cavity; 442, communication port; 51, adjusting rod; 511, annular part; 5111, handle part; 512, wing plate part; 52, connecting rod; 521, contact part; 61, side contact plate; 62, sliding connection block; 621, columnar part; 71, contact ring; 72, first elastic member; 8, flexible rubber ring. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0042] As shown in Figures 1-11 A device and method for predicting road traffic flow, comprising:

[0043] The base 1 is fixedly arranged in the tunnel;

[0044] The installation seat 2 is slidingly arranged on the base 1 so that the detection assembly arranged on the top surface of the installation seat 2 is exposed outside the tunnel;

[0045] The lifting assembly 4 comprises a threaded lifting column 41 and a drive rod 42, which are rotatably arranged on the installation seat 2, and the threaded lifting column 41 is threadedly connected with the base 1.

[0046] Specifically, as shown in Figure 3As shown, the detection assembly includes the blocking plate 31, the pressure sensor 32 and the counter 33 which are sequentially stacked, the blocking plate 31 is flush with the top surface of the installation seat 2, when the vehicle drives through the blocking plate 31 on the top surface of the installation seat 2, the pressure sensor 32 is pressed to send a signal to drive the counter 33 to count, and the upper end of the threaded lifting column 41 of the lifting assembly 4 is rotationally arranged on the installation seat 2, and the lower end is threadedly connected to the base 1, in use, the base 1 is first fixedly connected to the horizontally excavated tunnel in the road surface, then the driving rod 42 is rotated to drive the threaded lifting column 41 to rotate, at this time, the installation seat 2 moves vertically relative to the base 1 to adjust the vertical height of the top surface of the installation seat 2 and the blocking plate 31 to be flush with the road surface, so as to avoid the misalignment of the top surface of the installation seat 2 and the road surface to cause the vehicle to shake.

[0047] Further, the driving rod 42 can be provided with a wrench groove for being driven by a wrench to rotate manually, or an electric control motor can be used to drive the driving rod 42 to rotate.

[0048] Still further, the driving rod 42 can drive the threaded lifting column 41 to rotate through gear set transmission, or can drive the threaded lifting column 41 to rotate through rack transmission, or can be used in combination with a motor and a rotation stroke sensor to drive the threaded lifting column 41 to rotate, or other structures known to those skilled in the art can be used.

[0049] Still further, a plurality of threaded lifting columns 41 driven by the driving rod 42 can be rotationally arranged on the installation seat 2 to increase the vertical lifting stability of the installation seat 2.

[0050] In the above technical solution, the installation seat 2 is installed on the base 1 through the threaded lifting column 41, when the base 1 is fixedly installed in the tunnel of the road surface, the threaded lifting column 41 is driven to rotate by the driving rod 42 to vertically lift and move the installation seat 2 relative to the base 1, thereby adjusting the height of the detection assembly on the top surface of the installation seat 2 to be flush with the road surface to avoid misalignment, without the need to strictly control the excavation depth of the artificial tunnel, thereby facilitating the rapid installation and adjustment of the device.

[0051] As another embodiment provided by the present application, the lifting column seat 34 symmetrically arranged on the installation seat 2 relative to the detection assembly is also included, the lifting column seat 34 threadedly cooperates with the driving rod 42, and the lifting column seat 34 is slidingly assembled on the installation seat 2.

[0052] Specifically, as shown in the drawings, Figure 1As shown, the lifting column seat 34 is symmetrically slidably arranged on the installation seat 2, and the driving rod 42 is threadedly connected with the lifting column seat 34, and after the driving rod 42 drives the installation seat 2 to vertically move to complete the leveling adjustment of the monitoring assembly and the road surface, the driving rod 42 can be further rotated to drive the lifting column seat 34 to vertically slide and extend out of the installation seat 2 to form a road pile, and the lifting column seat 34 forms the road pile to play a warning role, avoiding the high-speed driving of vehicles to cause excessive impact damage to the installation seat 2 and the detection assembly. In addition, the lifting column seat 34 is located on both sides of the detection assembly to reduce the passable width of the road surface, thereby avoiding the detection counting error problem caused by the multiple vehicles passing through the detection surface of the detection assembly in parallel. In addition, the lifting column seat 34 can also be slidably arranged in the installation seat 2 by rotating the driving rod 42, thereby improving the road smoothness during the peak period when the vehicle flow is not measured.

[0053] Further, a rubber wrapping layer can be arranged on the periphery of the lifting column seat 34 to realize the waterproof sealing between the lifting column seat 34 and the installation seat 2. In addition, the existence of the rubber wrapping layer can also reduce the impact suffered by the vehicle when accidentally hitting the lifting column seat 34, thereby increasing the safety in use.

[0054] As another embodiment provided by the present application, a lateral abutting plate 61 abutting against the side wall of the tunnel is horizontally slidably arranged on the installation seat 2, and the distance between the lateral abutting plate 61 and the starting position of the sliding path is the expansion joint.

[0055] Specifically, as shown in the drawings, Figure 4 The installation seat 2 is provided with the lateral abutting plate 61 on both horizontal sides, and the installation seat 2 is further provided with an elastic member to drive the lateral abutting plate 61 to slide away from the installation seat 2 horizontally. When the base 1 is fixedly installed in the tunnel, the elastic member on the installation seat 2 drives the lateral abutting plate 61 to abut against the side wall of the tunnel horizontally, and at this time, the lateral abutting plate 61 has a distance from the installation seat 2 to form an expansion joint. That is, when the two sides of the road surface expand due to heat, the roadbed body extrudes the lateral abutting plate 61 to move horizontally relative to the installation seat 2 and approach the installation seat 2. When the two sides of the road surface shrink due to cold, the elastic member drives the lateral abutting plate 61 to slide away from the installation seat 2 horizontally and abut against the side wall of the tunnel. The lateral abutting plate 61 can slide horizontally along the sliding path to adaptively abut against the side wall of the tunnel to play the role of the expansion joint, avoiding the additional opening of the expansion joint to cause the collapse of the periphery of the tunnel. In addition, it can also avoid the direct extrusion of the installation seat 2 due to the thermal expansion and cold contraction of the road surface to cause the damage or jamming of the installation seat 2.

[0056] Further, the elastic member can be a spring, an elastic plate, an elastic air bag or other elastic members known to those skilled in the art.

[0057] As another embodiment provided by the present application, the lateral abutting plate 61 is provided with a sliding connection block 62 coupled / decoupled with the driving rod 42.

[0058] Specifically, as shown in Figure 4 The sliding connecting block 62 is movably arranged on the lateral abutting plate 61, and the sliding connecting block 62 can be coupled with the driving rod 42 to drive the lateral abutting plate 61 and the driving rod 42 to be in transmission connection, so that when the lateral abutting plate 61 horizontally slides due to thermal expansion and contraction of the road surface, the lateral abutting plate 61 drives the driving rod 42 to rotate through the sliding connecting block 62, and the driving rod 42 drives the mounting seat 2 to move vertically to adapt to the height change of the road surface. The base 1 and the mounting seat 2 are arranged in the tunnel, and the lateral abutting plate 61 abuts against the side of the tunnel to form a expansion joint. When the road surface near the tunnel expands or contracts due to thermal expansion and contraction, the lateral abutting plate 61 horizontally slides to drive the mounting seat 2 to move vertically to adapt to the height change of the road surface, thereby avoiding the problem that the height of the road surface changes due to thermal expansion and contraction of the roadbed, and the top surface of the mounting seat 2 is out of level. When the road surface expands due to heat, the lateral abutting plate 61 pushes horizontally towards the mounting seat 2, the sliding connecting block 62 slides with the lateral abutting plate 61 and is coupled with the driving rod 42 to drive the driving rod 42 to rotate, and then the mounting seat 2 is driven by the driving rod 42 to move vertically to be flush with the road surface, thereby avoiding the problem that the road surface expands or contracts due to thermal expansion and contraction.

[0059] Further, the sliding connecting block 62 can be provided with a rack portion, and the sliding connecting block 62 can vertically slide to couple / decouple the rack portion with a gear ring provided on the driving rod 42. When the sliding connecting block 62 is coupled with the driving rod 42, the sliding connecting block 62 horizontally slides to drive the driving rod 42 to rotate. Alternatively, the sliding connecting block 62 can be provided with a stroke sensor, a motor and a transmission gear. The sliding connecting block 62 can vertically slide to couple / decouple the transmission gear with the gear ring provided on the driving rod 42. The stroke sensor detects the horizontal movement distance of the sliding connecting block 62 to drive the motor to rotate and drive the driving rod 42 to rotate through the transmission gear. Alternatively, other structures that can realize coupling / decoupling between the sliding connecting block 62 and the driving rod 42 and can drive the driving rod 42 to rotate when the sliding connecting block 62 is coupled can be used.

[0060] As another embodiment of the present application, the lifting assembly 4 further comprises a first transmission gear 43 and a second transmission gear 44 that are in meshing engagement. The first transmission gear 43 is coupled / decoupled with the driving rod 42, and the second transmission gear 44 is in transmission connection with the threaded lifting column 41.

[0061] Specifically, as shown in Figure 3 The first transmission gear 43 and the second transmission gear 44 are coupled, the second transmission gear 44 is coupled with the first gear ring portion 411 of the threaded lifting column 41, and the first transmission gear 43 is coupled with the driving rod 42. Figure 5The first transmission gear 43 is provided with a movable end 431, which can be divided into a movable part and a clamping part. The movable end 431 is arranged in the mounting end 423 of the driving rod 42. Figure 8 and Figure 11 When the movable part of the first transmission gear 43 is always arranged in the mounting end 423, the first transmission gear 43 can be axially slid to clamp the clamping part in the clamping groove arranged in the mounting end 423, so that the first transmission gear 43 is coaxially rotationally coupled with the driving rod 42. At this time, the driving rod 42 can drive the first transmission gear 43 to rotate, and the second transmission gear 44 is driven to rotate to drive the threaded lifting column 41 to rotate and drive the mounting seat 2. When the first transmission gear 43 is axially slid to make the clamping part slide out of the clamping groove arranged in the mounting end 423, the first transmission gear 43 can be relatively rotated with the driving rod 42 to be decoupled. At this time, the driving rod 42 can be rotated to drive the lifting column seat 34 to move vertically, and the driving rod 42 is decoupled from the first transmission gear 43, so that the mounting seat 2 does not move vertically, thereby avoiding the accidental movement of the mounting seat 2 when the height of the lifting column seat 34 is adjusted, and ensuring that the mounting seat 2 is flush with the road surface.

[0062] Further, the first transmission gear 43 can be rotationally arranged on the movable seat, and the movable seat is slidably arranged on the mounting seat 2. The movable seat is driven to slide along the axial direction of the first transmission gear 43 to couple / decouple the first transmission gear 43 with the gear ring arranged on the driving rod 42. Alternatively, a face gear part is coaxially arranged on the first transmission gear 43, and the face gear part is coupled with the face tooth part arranged on the driving rod 42 to realize the coupling / decoupling between the first transmission gear 43 and the driving rod 42.

[0063] As another embodiment of the present application, the driving rod 42 is provided with a threaded connection part 424 which is threadedly connected with the lifting column seat 34, and the threaded connection part 424 is opposite to the threaded direction of the threaded lifting column 41.

[0064] Specifically, as shown in Figure 2As shown, the threaded connection portion 424 is in threaded cooperation with the lifting column base 34, and when the driving rod 42 is rotated, the threaded connection portion 424 drives the lifting column base 34 to move vertically, and due to the transmission of the first transmission gear 43 and the second transmission gear 44, the driving rod 42 and the threaded lifting column 41 are kept in same direction rotation. When the installation base 2 is adjusted to the right height, and the lifting column base 34 is driven by the threaded connection portion 424 to move vertically and extend to form a road post, when a person sits on the lifting column base 34 or other unexpected situations occur, the lifting column base 34 is subjected to vertical downward pressure, and the installation base 2 is in transmission connection with the lifting column base 34 through the threaded lifting column 41, the second transmission gear 44, the first transmission gear 43 and the driving rod 42, and the installation base 2 is subjected to the force of vertical upward movement, and the forces of the vertical lifting column base 34 and the installation base 2 are counteracted to make the installation base 2 and the lifting column base 34 self-locking at the same time, thereby avoiding the problem that the lifting column base 34 is pressed into the installation base 2 due to the accidental pressure, causing the installation base 2 to move to form a wrong table, and ensuring the height erection stability of the two.

[0065] As another embodiment provided by the present application, a switching assembly is further included, which comprises an adjusting rod 51 vertically slidingly arranged in the driving rod 42, and a ring-shaped portion 511 arranged on the adjusting rod 51, and a ring-shaped movable groove 421 is arranged on the driving rod 42, and the ring-shaped portion 511 is movably arranged in the ring-shaped movable groove 421, and the adjusting rod 51 is movably assembled for switching among the following three working positions:

[0066] The first working position: the ring-shaped portion 511 is located in the middle of the ring-shaped movable groove 421, the first transmission gear 43 is coupled with the driving rod 42, and the sliding connection block 62 is decoupled with the driving rod 42;

[0067] The second working position: the ring-shaped portion 511 is located at the lower end of the ring-shaped movable groove 421, the first transmission gear 43 is decoupled with the driving rod 42, and the sliding connection block 62 is coupled with the driving rod 42;

[0068] The third working position: the ring-shaped portion 511 is located at the upper end of the ring-shaped movable groove 421, the first transmission gear 43 is coupled with the driving rod 42, and the sliding connection block 62 is coupled with the driving rod 42.

[0069] Specifically, as Figure 1As shown, the annular movable groove 421 of the driving rod 42 is located on the driving top of the installation seat 2, and the adjusting rod 51 is vertically slidably arranged in the driving rod 42 so that the annular part 511 is located in the annular movable groove 421, and the exposed holding part 5111 is arranged on the annular part 511 to facilitate the sliding of the adjusting rod 51 to switch the working position. The switching assembly further comprises a connecting rod 52 vertically slidably arranged in the driving rod 42, the upper end of the connecting rod 52 is arranged on the contact part 521 extending into the annular movable groove 421, and the lower end of the connecting rod 52 extends into the mounting end 423 of the driving rod 42. In addition, the abutting ring 71 and the first elastic member 72 are arranged in the mounting end 423, wherein the first elastic member 72 drives the abutting ring 71 to slide to abut the first transmission gear 43 to slide axially so that the clamping part of the first transmission gear 43 is clamped in the clamping groove arranged in the mounting end 423, so that the first transmission gear 43 and the driving rod 42 are kept coupled. The lateral abutting plate 61 is provided with an elastic member for driving the sliding connecting block 62 to move vertically downward, and the sliding connecting block 62 moves vertically downward to decouple the driving rod 42. The elastic member can be a spring, an elastic plate, an elastic air bag or other elastic members known to those skilled in the art.

[0070] When the annular part 511 of the adjusting rod 51 is driven to slide to the middle of the annular movable groove 421, the adjusting rod 51 is located in the first working position, the adjusting rod 51 does not abut the connecting rod 52 to contact the first transmission gear 43, and the first elastic member 72 drives the abutting ring 71 to slide to abut the first transmission gear 43 to slide vertically upward to couple with the driving rod 42. The adjusting rod 51 does not contact the sliding connecting block 62, and the elastic member on the lateral abutting plate 61 drives the sliding connecting block 62 to move vertically downward to decouple the driving rod 42. At this time, the driving rod 42 can be driven to rotate to drive the installation seat 2 to move vertically to adjust the height through the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41, so as to avoid the need for manual excavation to change the depth of the tunnel and adjust the height of the installation seat 2, thereby facilitating quick installation and use.

[0071] When the annular part 511 of the adjusting rod 51 is driven to slide vertically downward to the lower end of the annular movable groove 421, the adjusting rod 51 is switched to the second working position, and the adjusting rod 51 still does not contact the sliding connecting block 62, and the elastic member on the lateral abutting plate 61 drives the sliding connecting block 62 to move vertically downward to decouple the driving rod 42. However, the annular part 511 of the adjusting rod 51 abuts the connecting rod 52 to move vertically downward, and the connecting rod 52 abuts the first transmission gear 43 to overcome the first elastic member 72 to move vertically downward to decouple the first transmission gear 43 from the driving rod 42. At this time, the driving rod 42 can be rotated to drive the lifting column seat 34 to move vertically upward to form a road pile. Since the first transmission gear 43 is decoupled from the driving rod 42, the installation seat 2 will not move vertically due to the rotation of the driving rod 42, thereby ensuring the stability of the height of the installation seat 2.

[0072] When the annular part 511 of the adjusting rod 51 is driven to vertically slide up to the upper end of the annular movable slot 421, the adjusting rod 51 is switched to the third position, at this time, the adjusting rod 51 pushes the sliding connecting block 62 to vertically slide up to overcome the elastic member to be coupled with the driving rod 42, the connecting rod 52 no longer contacts the first transmission gear 43, the first elastic member 72 drives the abutting ring 71 to slide to push the first transmission gear 43 to vertically slide up to be coupled with the driving rod 42; At this time, the lateral abutting plate 61 is coupled with the driving rod 42 through the sliding connecting block 62 to achieve the effect that the installed seat 2 can be driven to move adaptively in height, avoiding the formation of a step with the top surface of the installed seat 2 due to the thermal expansion and cold contraction of the road surface.

[0073] By moving the single adjusting rod 51 to switch between different positions, the driving rod 42 can drive the installed seat 2, the lifting column seat 34, or the lateral abutting plate 61 to be in transmission connection with the driving rod 42, respectively, and the adjustment of the entire device can be completed by only using the driving rod 42 and the adjusting rod 51, which is convenient for actual use and adjustment.

[0074] Further, the first elastic member 72 can be a spring, an elastic air bag, an elastic plate, or other elastic members known to those skilled in the art.

[0075] As another embodiment provided by the present application, the second transmission gear 44 is provided with a flexible rubber ring 8 with an arc-shaped cross section, the second transmission gear 44 is provided with an oil storage cavity 441 and a communication port 442 connected with the oil storage cavity 441 and facing the upper arc surface of the flexible rubber ring 8, and the first transmission gear 43 is driven to be separated from the driving rod 42 to push the flexible rubber ring 8 to deform to expose the communication port 442.

[0076] Specifically, as shown in FIG. 6, the flexible rubber ring 8 is provided with a plurality of arc-shaped through holes 81, and the first transmission gear 43 is provided with a plurality of protrusions 431 corresponding to the through holes 81. Figure 3As shown, when the adjusting rod 51 is vertically moved downward from the first position to the second position, the first transmission gear 43 is pushed vertically to slide downward by the connecting rod 52 and is in contact with the flexible rubber ring 8 to drive the flexible rubber ring 8 to deform, at this time, the first transmission gear 43 has rotation resistance when in contact with the flexible rubber ring 8, which avoids the first transmission gear 43 from rotating along with the driving rod 42 due to the friction force between the first transmission gear 43 and the driving rod 42, the oil liquid in the oil storage cavity 441 of the second transmission gear 44 also plays a role of increasing the rotational inertia of the second transmission gear 44, which avoids the second transmission gear 44 and the first transmission gear 43 from rotating along with the driving rod 42 due to the friction force, thereby avoiding the accidental movement of the installation seat 2 when the adjusting lifting column seat 34 is adjusted, ensuring that the top surface of the installation seat 2 is flush with the road surface to increase the stability of the vehicle driving, and the flexible rubber ring 8 is deformed to expose the communication port 442 connected with the oil storage cavity 441 when being pushed, at this time, the oil liquid flows out along the communication port 442 and is temporarily stored on the upper concave surface of the flexible rubber ring 8; then, when the adjusting rod 51 is driven to vertically slide upward into the third position, the first transmission gear 43 slides upward to be coupled with the driving rod 42 again, at this time, the driving rod 42 is rotated by being slidably driven by the lateral contact plate 61 and the sliding connecting block 62, thereby driving the first transmission gear 43 and the second transmission gear 44 to rotate, the oil liquid temporarily stored on the upper surface of the flexible rubber ring 8 flows out and adheres to the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41 and the first tooth ring part 411, thereby realizing the lubrication and rust prevention of the lifting assembly 4, avoiding the transmission difficulty problem caused by rust or lack of lubrication of the lifting assembly 4, and ensuring the stability of the device.

[0077] Further, the upper concave surface of the flexible rubber ring 8 can also be provided with a flexible antenna vertically protruding upward, when the oil liquid is temporarily stored on the upper concave surface of the flexible rubber ring 8, the flexible antenna is soaked, when the second transmission gear 44 rotates, the flexible antenna rotates along with the second transmission gear 44 to brush the oil liquid on the first tooth ring part 411 and the first transmission gear 43, so as to increase the effect of oil liquid adhesion lubrication.

[0078] As another embodiment provided by the present application, the sliding connecting block 62 is vertically slidably arranged on the lateral contact plate 61, and the sliding connecting block 62 is provided with a columnar part 621, the rotating part 422 of the driving rod 42 is provided with a plurality of arc-shaped movable grooves 4222, the adjusting rod 51 pushes the columnar part 621 to slide into the arc-shaped movable groove 4222 in the third position, the lateral contact plate 61 drives the columnar part 621 to slide horizontally and is located in the arc-shaped movable groove 4222 to cooperate with the sliding to drive the driving rod 42 to rotate.

[0079] Specifically, as shown in the drawings, Figure 4As shown, the driving rod 42 is provided with a rotating part 422, the rotating part 422 is rotatably arranged in the mounting seat 2, and a plurality of arc-shaped movable grooves 4222 are formed in the rotating part 422. The adjusting rod 51 is provided with a wing plate part 512, the adjusting rod 51 is vertically slidably arranged on the rotating part 422 through a through groove 4221 formed in the rotating part 422, and the sliding connecting block 62 is slidably arranged on the lateral abutting plate 61 so that the sliding connecting block 62 is located between the wing plate part 512 and the rotating part 422, and the columnar part 621 of the sliding connecting block 62 faces the arc-shaped movable groove 4222.

[0080] Further, when the adjusting rod 51 moves to the first or second working position, the wing plate part 512 does not contact the sliding connecting block 62, and the columnar part 621 is separated from the arc-shaped movable groove 4222 so that the sliding connecting block 62 is decoupled from the driving rod 42. When the adjusting rod 51 is slid upward to switch to the third working position, the wing plate part 512 vertically slides to push the sliding connecting block 62 to vertically slide upward. At this time, the columnar part 621 extends into the arc-shaped movable groove 4222 due to sliding, and the sliding connecting block 62 is coupled with the driving rod 42. When the lateral abutting plate 61 slides relative to the mounting seat 2 due to thermal expansion and contraction of the road surface, the lateral abutting plate 61 drives the sliding connecting block 62 to horizontally slide, and the columnar part 621 is located in the arc-shaped movable groove 4222 to cooperate with the sliding to drive the driving rod 42 to rotate. At this time, the driving rod 42 drives the mounting seat 2 to adaptively move and adjust the height through the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41, avoiding the problem that the height of the road surface changes due to thermal expansion and contraction of the roadbed body and the top surface of the mounting seat 2 forms a fault, increasing the stability when the vehicle passes through, and also avoiding the impact damage to the mounting seat 2 and the road surface due to the vehicle passing through the fault, increasing the service life of the mounting seat 2. When the columnar part 621 of the sliding connecting block 62 and the arc-shaped movable groove 4222 of the driving rod 42 are coupled / decoupled, the sliding connecting block 62 can drive the driving rod 42 to rotate through the columnar part 621 and the arc-shaped movable groove 4222, simplifying the transmission structure and increasing the use stability. Secondly, when the columnar part 621 is separated from the arc-shaped movable groove 4222 to decouple the sliding connecting block 62 from the driving rod 42, the lateral abutting plate 61 is not transmissionally connected with the mounting seat 2, so as to facilitate the erection and installation of the base 1 and the mounting seat 2.

[0081] Working principle:

[0082] First, the base 1 is fixedly erected in the trench excavated transversely on the road surface, and the mounting seat 2 is located in the trench so that the elastic member on the mounting seat 2 drives the lateral abutting plate 61 to horizontally abut against the side wall of the trench. At this time, the lateral abutting plate 61 has a spacing with the mounting seat 2 to form an expansion joint.

[0083] Subsequently, the vertical sliding adjustment rod 51 is switched to the first station, the elastic element on the side of the abutting plate 61 drives the sliding block 62 to move vertically downward to decouple with the drive rod 42, and the first elastic element 72 drives the abutting ring 71 to slide to push the first transmission gear 43 to move vertically upward to couple with the drive rod 42, and the first transmission gear 43 can be rotated to drive the lifting column seat 34 to move vertically to form a road post, at the same time, the first transmission gear 43 is pushed vertically downward by the connecting rod 52 to abut on the flexible rubber ring 8 and drive the flexible rubber ring 8 to deform, and the flexible rubber ring 8 is exposed to the communication port 442 connected with the oil storage cavity 441 when deformed, and the oil flows out along the communication port 442 and temporarily stores on the upper concave surface of the flexible rubber ring 8.

[0084] Subsequently, the vertical sliding adjustment rod 51 is switched to the second station, the elastic element on the side of the abutting plate 61 drives the sliding block 62 to move vertically downward to decouple with the drive rod 42, but the annular part 511 of the adjustment rod 51 pushes the connecting rod 52 to move vertically downward, the connecting rod 52 pushes the first transmission gear 43 to move vertically downward to decouple with the drive rod 42, at this time, the drive rod 42 can be rotated to drive the lifting column seat 34 to move vertically to form a road post, at the same time, the first transmission gear 43 is pushed vertically downward by the connecting rod 52 to abut on the flexible rubber ring 8 and drive the flexible rubber ring 8 to deform, and the flexible rubber ring 8 is exposed to the communication port 442 connected with the oil storage cavity 441 when deformed, and the oil flows out along the communication port 442 and temporarily stores on the upper concave surface of the flexible rubber ring 8.

[0085] Subsequently, the vertical sliding adjustment rod 51 is switched to the third station, the first elastic element 72 drives the abutting ring 71 to slide to push the first transmission gear 43 to move vertically upward to couple with the drive rod 42, and the wing plate part 512 of the adjustment rod 51 moves vertically to push the sliding block 62 to move vertically upward, at this time, the cylindrical part 621 extends into the arc-shaped movable groove 4222 to couple the sliding block 62 with the drive rod 42, when the side abutting plate 61 slides relative to the installation seat 2 due to thermal expansion and contraction of the road surface, the side abutting plate 61 drives the sliding block 62 to slide horizontally, and the cylindrical part 621 is located in the arc-shaped movable groove 4222 to cooperate with the sliding to drive the drive rod 42 to rotate, at this time, the drive rod 42 drives the installation seat 2 to move adaptively by the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41, and in the transmission process of the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41, the oil temporarily stored on the upper surface of the flexible rubber ring 8 flows out due to rotation and adheres to the first transmission gear 43, the second transmission gear 44 and the threaded lifting column 41 and the first tooth ring part 411, thereby realizing lubrication and rust prevention of the lifting assembly 4.

[0086] A method for predicting road traffic flow, the specific steps are as follows:

[0087] S1, the detection assembly is set in the road pit by the base 1 and the mounting seat 2, so that the detection assembly is flush with the road surface, when the vehicle drives along the road and passes through the detection assembly, the detection assembly is triggered and counted, when a single vehicle completely passes through the detection assembly, the detection assembly is triggered twice due to the tire spacing;

[0088] S2, the detection assembly count from 7 to 9 in the morning peak period is divided by two to obtain the morning peak traffic data of the road section, the value can be measured multiple times on different days to obtain the average morning peak traffic data value;

[0089] S3, the detection count from 17 to 19 in the evening peak period is divided by two to obtain the evening peak traffic data of the road section, the value can be measured multiple times on different days to obtain the average evening peak traffic data value;

[0090] S4, the detection assembly count in 24 hours of a day is divided by two to obtain the traffic data of the road section in the day, the traffic data of the day is divided by twenty-four to obtain the average hourly traffic data in the day, the value can be measured multiple times on different days to obtain the average daily traffic data value or the average hourly traffic data.

[0091] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for those skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A device for road traffic flow, characterized in that, The utility model relates to a kind of tunnel detection device, including: Base (1) is fixedly arranged in tunnel; Mounting seat (2) is slidably arranged on base (1) to expose the detection assembly arranged on the top surface of mounting seat (2) outside the tunnel; Lifting assembly (4) includes screw lifting column (41) and driving rod (42) rotatably arranged on mounting seat (2), and screw lifting column (41) is threadedly engaged with base (1); The lateral abutment plate (61) that abuts to the side wall of tunnel is horizontally slidably arranged on mounting seat (2), and the distance between lateral abutment plate (61) and the starting position of sliding path is expansion joint; The sliding connection block (62) that is coupled or decoupled with driving rod (42) is arranged on lateral abutment plate (61); It further includes lifting column seat (34) symmetrically arranged on mounting seat (2) about detection assembly, lifting column seat (34) is threadedly engaged with driving rod (42), and lifting column seat (34) is slidably assembled on mounting seat (2); Lifting assembly (4) further includes first transmission gear (43) and second transmission gear (44) engaged with each other, first transmission gear (43) is coupled or decoupled with driving rod (42), and second transmission gear (44) is drivingly connected with screw lifting column (41); Threaded connection portion (424) that is threadedly engaged with lifting column seat (34) is arranged on driving rod (42), and the threaded direction of threaded connection portion (424) is opposite to that of screw lifting column (41); It further includes switching assembly, which includes adjusting rod (51) slidably arranged in driving rod (42) along vertical direction, ring-shaped portion (511) is arranged on adjusting rod (51), ring-shaped movable slot (421) is formed in driving rod (42), ring-shaped portion (511) is movably arranged in ring-shaped movable slot (421), and adjusting rod (51) is movably assembled for switching among the following three stations: First station: ring-shaped portion (511) is located in the middle of ring-shaped movable slot (421), first transmission gear (43) is coupled with driving rod (42), and sliding connection block (62) is decoupled with driving rod (42); Second station: ring-shaped portion (511) is located at the lower end of ring-shaped movable slot (421), first transmission gear (43) is decoupled with driving rod (42), and sliding connection block (62) is coupled with driving rod (42); Third station: ring-shaped portion (511) is located at the upper end of ring-shaped movable slot (421), first transmission gear (43) is coupled with driving rod (42), and sliding connection block (62) is coupled with driving rod (42); Flexible rubber ring (8) with arc-shaped cross section is arranged on second transmission gear (44), oil storage cavity (441) and communication port (442) connected with oil storage cavity (441) and facing the upper arc surface of flexible rubber ring (8) are formed in second transmission gear (44), and first transmission gear (43) is driven to be separated from driving rod (42) and pushes flexible rubber ring (8) to deform to expose communication port (442). The sliding connecting block (62) is vertically slidably arranged on the lateral abutting plate (61), and a columnar portion (621) is arranged on the sliding connecting block (62), a plurality of arc-shaped movable grooves (4222) are arranged on the rotating portion (422) of the driving rod (42), the adjusting rod (51) pushes the columnar portion (621) to slide into the arc-shaped movable groove (4222) at the third working position, the lateral abutting plate (61) is driven to slide horizontally and is located in the arc-shaped movable groove (4222) to cooperate with the sliding to drive the driving rod (42) to rotate.

2. A method of predicting road traffic flow, characterized by, The device for measuring the road traffic flow in claim 1 comprises the following steps: S1, the base (1) and the mounting seat (2) are arranged in the road pit to make the detection assembly flush with the road surface, when the vehicle drives along the road and passes through the detection assembly, the detection assembly is triggered and counted, and when a single vehicle completely passes through the detection assembly, the detection assembly is triggered twice due to the tire spacing; S2, the detection assembly count from 7:00 to 9:00 in the morning peak period is divided by two to obtain the morning peak traffic flow data of the road section, and the value can be measured multiple times on different days to obtain the average morning peak traffic flow data value; S3, the detection count from 17:00 to 19:00 in the evening peak period is divided by two to obtain the evening peak traffic flow data of the road section, and the value can be measured multiple times on different days to obtain the average evening peak traffic flow data value; S4, the detection assembly count in 24 hours of a day is divided by two to obtain the traffic flow data of the road section in the day, and the traffic flow data of the day is divided by twenty-four to obtain the average hourly traffic flow data in the day, and the value can be measured multiple times on different days to obtain the average daily traffic flow data value or the average hourly traffic flow data.

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