Active control speed reduction device for tunnel trackless transportation inclined shaft and using method

Abstract

According to the tunnel trackless transportation inclined shaft active control speed reduction device, vehicle speed detection devices are arranged on the two sides of a mounting groove, vehicle speed detection processing is conducted on front wheels and rear wheels of a vehicle before the front wheels and the rear wheels pass through a speed bump, and the vehicle speed is transmitted into a height adjusting device through a controller, so that the speed bump is adjusted to ascend and descend; front and rear wheels of the vehicle are subjected to independent deceleration treatment and active braking, so that the speed of the vehicle meets the construction requirement; and meanwhile, through two times of speed reduction treatment, collision caused by one time of speed reduction can be relieved, and huge vibration of the vehicle is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and in particular to an active control deceleration device for trackless transport inclined shaft of a tunnel and a use method thereof. Background Art

[0002] At present, in order to speed up the construction period and progress of railway tunnel construction, long and large tunnels have added auxiliary tunnels for construction, cross tunnels, inclined shafts, horizontal guides and other auxiliary projects. With the increase in the frequency of existing engineering vehicles entering and exiting, and the large number of heavy vehicles, speed bumps must be installed to control vehicle speed and reduce the occurrence of traffic accidents; the existing speed bumps are fixedly installed on the road surface, and their height relative to the road surface is a fixed value and cannot be adjusted. If the height is too high, it is easy to cause the vehicle to shake more when passing, and if the height is too low, it is easy to cause the vehicle to travel too fast, both of which are not conducive to tunnel construction. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of deep foundation pit construction difficulties in the prior art, and to propose an active control deceleration device for trackless transport inclined shaft in a tunnel and a use method thereof.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A tunnel trackless transport inclined shaft active control deceleration device, comprising the ground and a preset installation groove on the ground, and also comprising a vehicle speed detection device, an adjustable speed bump, a height adjustment device and a controller; the vehicle speed detection device comprises a speed measuring device 1 and a speed measuring device 2; the speed measuring device 1 and the speed measuring device 2 are respectively arranged on both sides of the adjustable speed bump; the speed measuring device 2 is arranged in the exit direction of the adjustable speed bump and the distance between the adjustable speed bump and the adjustable speed bump is less than the distance between the front and rear wheels of the vehicle; the speed measuring device 1 is used to detect the speed of the front wheel of the vehicle before passing the adjustable speed bump; the speed measuring device 2 is used to detect the speed of the front wheel of the vehicle after passing the adjustable speed bump; the adjustable speed bump is movably arranged in the installation groove and the upper surface is flush with the ground; the height adjustment device is arranged below the adjustable speed bump and is used to adjust the height of the adjustable speed bump; the controller is respectively connected with the height adjustment device and the vehicle speed detection device by signal, and is used to control the height adjustment device to adjust the height of the upper end of the adjustable speed bump protruding from the ground according to the vehicle speed detected by the vehicle speed detection device.

[0006] Preferably, the adjustable speed bump is trapezoidal and a telescopic rod is connected to the bottom of the installation slot at the lower end; a pressure sensor is also connected to the upper end of the adjustable speed bump; and the pressure sensor is connected to the controller signal. The pressure sensor is set to sense the driving condition of the vehicle and feed it back to the controller, ensuring that the controller can receive the driving condition of the vehicle and cooperate with the height adjustment mechanism to work.

[0007] Preferably, the height adjustment device includes a base plate and a hydraulic cylinder; the upper end of the base plate is fixedly connected to the speed adjustment belt; the hydraulic cylinder is connected with a boost valve and a pressure relief valve; the boost valve and the pressure relief valve are connected to the controller signal, and the controller controls the boost and pressure relief of the hydraulic cylinder. The height adjustment of the base plate is achieved by setting the boost valve and the pressure relief valve, wherein the boost valve and the pressure relief valve are connected to the controller signal, and their operation is controlled by the controller.

[0008] The present invention also includes a method for using the active control deceleration device for trackless transportation in a tunnel, which is characterized by comprising the following steps:

[0009] Step 1: Install the height adjustment device;

[0010] According to the design, when pouring the pavement concrete, a mounting groove is reserved before the pavement concrete is finally set. The width matches the speed adjustment bump, and a height adjustment device is set at the bottom of the mounting groove. A hydraulic cylinder is pre-buried, and the output end of the hydraulic cylinder is fixedly connected to the bottom plate, and multiple bolt holes are reserved on the bottom plate.

[0011] Step 2: Install the vehicle speed detection device;

[0012] A speed measuring device 1 and a speed measuring device 2 are respectively installed on both sides of the installation groove, wherein the speed measuring device 1 and the speed measuring device 2 control and adjust the distance between the speed bumps according to the size of the vehicle, so as to avoid the speed measuring device 1 and the speed measuring device 2 being too close to the speed bumps, resulting in an incomplete height adjustment process, and at the same time, ensure that the distance between the speed measuring device 2 and the speed bumps is less than the distance between the front and rear wheels of the vehicle;

[0013] Step 3: Install and adjust the speed bump;

[0014] The upper end of the bottom plate is fixedly connected with an adjustable speed bump by bolts;

[0015] Step 4: Initial deceleration;

[0016] After the installation is completed, the vehicle drives in, and the vehicle first passes through the speed measuring device for speed detection, which is transmitted to the controller for calculation, and then the data is transmitted to the height adjustment device, and the boost valve is opened for boosting, so that the bottom plate drives the upper adjustment speed bump to move upward to a certain height, and the front wheels of the vehicle are decelerated;

[0017] Step 5: Second deceleration;

[0018] After the front wheels of the vehicle pass the speed-adjusting belt, they are measured again after passing through the speed measuring device 2, and the data is transmitted to the controller for calculation, and then the data is transmitted to the height adjustment device, and the pressure relief valve is opened to reduce the pressure. At this time, the boost valve is closed, so that the bottom plate drives the upper speed-adjusting belt to move downward to a certain height, and the rear wheels of the vehicle are decelerated;

[0019] Step 6: Restore and adjust the height of the speed bump;

[0020] After the pressure sensor on the adjustable speed bump senses pressure twice, that is, the entire vehicle passes over the top of the adjustable speed bump, the pressure sensor transmits data to the controller, which controls the pressure relief valve to open again, so that the height of the adjustable speed bump is restored to its initial state, that is, the upper end is flush with the ground.

[0021] Preferably, in the above step 1, the cross-section of the mounting groove is T-shaped; and the depth of the upper portion of the mounting groove is consistent with the height of the adjustable speed bump.

[0022] Preferably, in the above step three, the adjustable speed bump is made of steel and is provided in plurality; interconnected threading holes are provided between the plurality of adjustable speed bumps; and the plurality of adjustable speed bumps are fixedly connected through the threading holes.

[0023] Compared with the prior art, the present invention provides an active control deceleration device for trackless transportation in a tunnel and a method for using the same, which has the following beneficial effects:

[0024] The active control deceleration device and use method of the trackless transport inclined shaft of the tunnel are as follows: a mounting groove is preset on the road, and a speed bump and a height adjustment device are arranged in the mounting groove, and the initial height of the speed bump is made consistent with the ground, so that other vehicles at the upper end can pass smoothly when there is no need to decelerate; vehicle speed detection devices are arranged on both sides of the mounting groove, and vehicle speed detection processing is performed on the front and rear wheels of the vehicle before passing through the speed bump, and the speed is transmitted to the height adjustment device through a controller, so that the speed bump is adjusted to rise and fall, and the front and rear wheels of the vehicle are individually decelerated, and active braking is performed to make the speed reach the construction requirements; at the same time, by arranging two deceleration processes, the impact during one deceleration can be reduced, and the huge vibration of the vehicle can be avoided; by using ordinary channel steel and steel plate as buffer materials of the speed bump, maintenance and repair are convenient, and the slope angle of the speed bump can be arbitrarily adjusted according to the road slope of the tunnel during prefabrication, and the speed bump processed by ordinary steel has a good use effect, will not be crushed like cast steel material, and will not be crushed by crawler tracks like rubber material.

[0025] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The present invention has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 is a cross-sectional view of the present invention;

[0028] Figure 3 It is a flow chart of the present invention.

[0029] In the figure: 10, ground; 11, mounting groove; 20, vehicle speed detection device; 21, speed measuring device 1; 22, speed measuring device 2; 30, speed adjustment belt; 31, telescopic rod; 32, pressure sensor; 33, threading hole; 40, height adjustment device; 41, bottom plate; 42, hydraulic cylinder; 43, boost valve; 44, pressure relief valve; 50, controller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Figure 1-2 , the active control deceleration device of the tunnel trackless transportation inclined shaft includes a ground 10 and a preset installation groove 11 on the ground 10, and also includes a vehicle speed detection device 20, an adjustment speed reduction belt 30, a height adjustment device 40 and a controller 50;

[0031] The vehicle speed detection device 20 includes a speed measuring device 1 21 and a speed measuring device 22; the speed measuring device 1 21 and the speed measuring device 22 are respectively arranged on both sides of the adjustable speed bump 30; the speed measuring device 22 is arranged in the direction of the adjustable speed bump 30 and the distance between the adjustable speed bump 30 is less than the distance between the front and rear wheels of the vehicle; the speed measuring device 1 21 is used to detect the speed of the front wheel of the vehicle before passing the adjustable speed bump 30; the speed measuring device 22 is used to detect the speed of the front wheel of the vehicle after passing the adjustable speed bump 30;

[0032] The speed-adjusting belt 30 is movably arranged in the mounting groove 11 and its upper surface is flush with the ground 10; the height-adjusting device 40 is arranged below the speed-adjusting belt 30 and is used to adjust the height of the speed-adjusting belt 30;

[0033] The controller 50 is respectively connected to the height adjustment device 40 and the vehicle speed detection device 20 for controlling the height adjustment device 40 to adjust the height of the upper end of the speed bump 30 protruding from the ground 10 according to the vehicle speed detected by the vehicle speed detection device 20 .

[0034] The speed-adjusting belt 30 is trapezoidal and has a telescopic rod 31 connected to the bottom of the installation slot 11 at the lower end; a pressure sensor 32 is also connected to the upper end of the speed-adjusting belt 30; the pressure sensor 32 is connected to the controller 50 by signal. The telescopic rod 31 can be installed according to the installation situation; the pressure sensor 32 is set to sense the driving situation of the vehicle and feed it back to the controller, so that the controller 50 can receive the driving situation of the vehicle and work with the height adjustment mechanism 40.

[0035] The height adjustment device 40 includes a bottom plate 41 and a hydraulic cylinder 42; the upper end of the bottom plate 41 is fixedly connected to the speed adjustment belt 30; a boost valve 43 and a pressure relief valve 44 are connected to the hydraulic cylinder 42; the boost valve 43 and the pressure relief valve 44 are connected to the controller 50 by signal, and the controller 50 controls the boost and pressure relief of the hydraulic cylinder 42. The height adjustment of the bottom plate 31 is achieved by setting the boost valve 43 and the pressure relief valve 44, wherein the boost valve 43 and the pressure relief valve 44 are connected to the controller 50 by signal, and their operation is controlled by the controller 50.

[0036] like Figure 3 As shown, the present invention also includes a method for using an active control deceleration device for a tunnel trackless transportation inclined shaft, which is characterized by comprising the following steps:

[0037] Step 1: Install the height adjustment device 40;

[0038] According to the design, when pouring the pavement concrete, a mounting groove 11 is reserved before the pavement concrete is finally set, and the width matches the speed-adjusting bump 30. A height-adjusting device 40 is provided at the bottom of the mounting groove 11, a hydraulic cylinder 42 is pre-buried, and a bottom plate 41 is fixedly connected to the output end of the hydraulic cylinder 42, and a plurality of bolt holes are reserved on the bottom plate 41 to facilitate the installation of the speed-adjusting bump later.

[0039] Step 2: Install the vehicle speed detection device 20;

[0040] A speed measuring device 1 21 and a speed measuring device 22 are installed on both sides of the installation groove 11, respectively. The speed measuring device 1 21 and the speed measuring device 2 22 control and adjust the distance between the speed bumps 30 according to the size of the vehicle, so as to avoid the speed measuring device 1 21 and the speed measuring device 2 22 being too close to the speed bumps 30, resulting in an incomplete height adjustment process. At the same time, it is necessary to ensure that the distance between the speed measuring device 2 22 and the speed bumps 30 is less than the distance between the front and rear wheels of the vehicle, so as to ensure that the speed bumps 30 are raised and lowered between the two wheels.

[0041] Step 3: Install and adjust the speed bump 30;

[0042] The upper end of the bottom plate 41 is fixedly connected and adjusted with a speed bump 30 by bolts. To prevent the speed bump from being easily damaged, the speed bump is a rigid structure, which is prefabricated and has bolt holes and threading holes reserved at the upper end to facilitate the splicing and installation of the speed bumps.

[0043] Step 4: Initial deceleration;

[0044] After the installation is completed, the vehicle drives in, and the vehicle first passes through the speed measuring device 21 for speed detection, and then transmits the speed to the controller 50 for calculation, and then transmits the data to the height adjustment device 40, opens the boost valve 43 for boosting, so that the bottom plate 41 drives the upper end of the adjustable speed bump 30 to move upward to a certain height, and decelerates the front wheels of the vehicle, so that the speed of the vehicle is reduced to a speed close to the speed required for the vehicle to work; at the same time, in order to avoid the speed bump being too high and causing the vehicle to vibrate, the maximum height of the speed bump can be limited, and the slope of the speed bump can be customized according to the needs of the vehicle;

[0045] Step 5: Second deceleration;

[0046] After the front wheels of the vehicle pass the speed-adjusting belt 30, the speed is measured again after passing through the speed measuring device 22, and the data is transmitted to the controller 50 for calculation, and then the data is transmitted to the height adjustment device 40, and the pressure relief valve 44 is opened to reduce the pressure. At this time, the boost valve 43 is closed, so that the bottom plate 41 drives the upper speed-adjusting belt 30 to move downward to a certain height, and the rear wheels of the vehicle are decelerated, so that the speed of the vehicle is reduced again to reach the required speed;

[0047] Step 6: Restore and adjust the height of the speed bump 30;

[0048] After the pressure sensor 32 on the adjustable speed bump 30 senses pressure twice, that is, the entire vehicle passes over the top of the adjustable speed bump 30, the pressure sensor 32 transmits data to the controller 50, so that the controller 50 controls the pressure relief valve 44 to open again, so that the height of the adjustable speed bump 30 is restored to the initial state, that is, the upper end is flush with the ground 10, so that the road can be used normally.

[0049] In the above step 1, the cross section of the mounting groove 11 is T-shaped; and the depth of the upper portion of the mounting groove 11 is consistent with the height of the adjustable speed bump 30, so that the speed bump can be flush with the upper end of the ground, providing bottom support so that subsequent vehicles can pass normally.

[0050] In the above step three, the adjustable speed bump 30 is made of steel and is provided in plurality; interconnected threading holes 33 are provided between the plurality of adjustable speed bumps 30; the plurality of adjustable speed bumps 30 are fixedly connected by the threading holes 33, which is convenient for the installation of the speed bump, and the standard section length of the speed bump is 1m to 1.5m.

[0051] In the present invention, the controller 50 adjusts the width of the speed bump 30 to s and the height to H during calculation. Assuming that the cross section of the speed bump can be regarded as a 1 / 2 cycle sine wave, the formula is:

[0052]

[0053] In the formula, h(t) is the longitudinal excitation displacement of the speed bump; v is the speed of the car when it passes over the speed bump; t is the driving time; when in use, the speed of the car can be measured by the speed detection device 20 to obtain v, wherein the distance between the speed detection device 20 and the speed bump 30 is L, t=L / v, and the height of h(t) can be calculated.

[0054] In this design, the hydraulic cylinder "RCH-202" is used, whose single-cylinder load-bearing capacity can reach 20 tons, the inner diameter is 26.9mm, the maximum lifting height is 50mm, the hydraulic motor speed is 200r / min, the displacement is 100mL / r, and the oil flow rate is 20000mL / min.

[0055] The effective area of ​​the cylinder is:

[0056] S=(26.9 / 2)2·π=568.03mm 2

[0057] The oil inlet speed of the hydraulic cylinder is:

[0058] V=Q / (N·s)

[0059] Substituting relevant parameters, we can obtain V = 11 736.47 mm / min.

[0060] The speed bump raising time is:

[0061] T = h / v;

[0062] Substituting the data, we get T=0.25s, i.e., the maximum lifting process can be completed in 0.25s. Since the speed of the construction vehicles in the tunnel is relatively low, the speed should be maintained at 5-10km / h. Assuming that the speed before entering the tunnel is 30km / h, the appropriate distance between the speed measuring point and the speed bump is about 2m, i.e., the distance between the speed measuring device 1 21 and the adjustable speed bump 30 is preferably set at more than 2m, to ensure that after the vehicle enters, the adjustable speed bump 30 can complete the lifting work. The vehicle speed after the front wheel is decelerated should be 10-15km / h, and the appropriate distance between the speed measuring point and the speed bump is about 0.7m-1m, so the distance between the speed measuring device 2 22 is preferably set at about 1m, to ensure that the adjustable speed bump 30 can complete the lifting work. At the same time, the distance is shorter than the distance between the front and rear wheels to complete the deceleration of the rear wheels.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An active control deceleration device for trackless transportation in a tunnel, comprising a ground surface (10) and a mounting groove (11) preset on the ground surface (10), characterized in that: It also includes a vehicle speed detection device (20), an adjustable speed reduction belt (30), a height adjustment device (40) and a controller (50); The vehicle speed detection device (20) comprises a speed measuring device 1 (21) and a speed measuring device 2 (22); the speed measuring device 1 (21) and the speed measuring device 2 (22) are respectively arranged on both sides of the adjustable speed bump (30); the speed measuring device 2 (22) is arranged in the direction of exiting the adjustable speed bump (30) and the distance between the speed measuring device 2 and the adjustable speed bump (30) is smaller than the distance between the front and rear wheels of the vehicle; the speed measuring device 1 (21) is used to detect the speed of the front wheels of the vehicle before passing the adjustable speed bump (30); the speed measuring device 2 (22) is used to detect the speed of the front wheels of the vehicle after passing the adjustable speed bump (30); The adjustable speed bump (30) is movably arranged in the installation groove (11) and its upper surface is flush with the ground (10); the height adjustment device (40) is arranged below the adjustable speed bump (30) and is used to adjust the height of the adjustable speed bump (30); The controller (50) is respectively connected to the height adjustment device (40) and the vehicle speed detection device (20) by signals, and is used to control the height adjustment device (40) to adjust the height of the upper end of the speed reduction belt (30) protruding from the ground (10) according to the vehicle speed detected by the vehicle speed detection device (20).

2. The active control deceleration device for inclined shaft of trackless tunnel transportation according to claim 1 is characterized in that: The adjustable speed bump (30) is trapezoidal and has a telescopic rod (31) connected to the bottom of the mounting groove (11) at its lower end; a pressure sensor (32) is also connected to the upper end of the adjustable speed bump (30); and the pressure sensor (32) is signal-connected to the controller (50).

3. The active control deceleration device for inclined shaft of trackless tunnel transportation according to claim 1 is characterized in that: The height adjustment device (40) comprises a base plate (41) and a hydraulic cylinder (42); the upper end of the base plate (41) is fixedly connected to the adjustment speed reduction belt (30); a pressure boosting valve (43) and a pressure relief valve (44) are connected to the hydraulic cylinder (42); the pressure boosting valve (43) and the pressure relief valve (44) are connected to a controller (50) by signal, and the controller (50) controls the pressure boosting and pressure relief of the hydraulic cylinder (42).

4. The method for using the active control deceleration device for trackless transportation in tunnel according to claim 1 is characterized in that: The steps include: Step 1: Install the height adjustment device (40); According to the design, when pouring the pavement concrete, a mounting groove (11) is reserved before the pavement concrete is finally set, and the width matches the speed adjustment belt (30), and a height adjustment device (40) is arranged at the bottom of the mounting groove (11), a hydraulic cylinder (42) is pre-buried, and a bottom plate (41) is fixedly connected to the output end of the hydraulic cylinder (42), and a plurality of bolt holes are reserved on the bottom plate (41); Step 2: Install the vehicle speed detection device (20); A speed measuring device 1 (21) and a speed measuring device 2 (22) are respectively installed on both sides of the installation groove (11), wherein the speed measuring device 1 (21) and the speed measuring device 2 (22) control and adjust the distance between the speed bumps (30) according to the size of the vehicle, so as to avoid the speed measuring device 1 (21) and the speed measuring device 2 (22) being too close to the speed bumps (30) so as to prevent the height adjustment process from being incomplete, and at the same time ensure that the distance between the speed measuring device 2 (22) and the speed bumps (30) is less than the distance between the front and rear wheels of the vehicle; Step 3: Install and adjust the speed bump (30); The upper end of the bottom plate (41) is fixedly connected with an adjustable speed bump (30) by means of bolts; Step 4: Initial deceleration; After the installation is completed, the vehicle enters, the vehicle first passes through the speed measuring device (21) for speed detection, the speed is transmitted to the controller (50) for calculation, and then the data is transmitted to the height adjustment device (40), the boost valve (43) is opened for boosting, so that the bottom plate (41) drives the upper end of the adjustable speed reduction belt (30) to move upward to a certain height, and the front wheels of the vehicle are decelerated; Step 5: Second deceleration; After the front wheel of the vehicle passes over the adjustable speed bump (30), it is measured again by the second speed measuring device (22), and the data is transmitted to the controller (50) for calculation, and then the data is transmitted to the height adjustment device (40), and the pressure relief valve (44) is opened to reduce the pressure. At this time, the boost valve (43) is closed, so that the bottom plate (41) drives the upper adjustable speed bump (30) to move downward to a certain height, and the rear wheel of the vehicle is decelerated; Step 6: Restore and adjust the height of the speed bump (30); After the pressure sensor (32) on the adjustable speed bump (30) senses pressure twice, i.e., the entire vehicle passes over the upper side of the adjustable speed bump (30), the pressure sensor (32) transmits data to the controller (50), so that the controller (50) controls the pressure relief valve (44) to open again, so that the height of the adjustable speed bump (30) is restored to the initial state, i.e., the upper end is flush with the ground (10).

5. The active control deceleration device for inclined shaft of trackless tunnel transportation according to claim 1 is characterized in that: In the above step 1, the cross section of the installation groove (11) is T-shaped; and the depth of the upper part of the installation groove (11) is consistent with the height of the adjustment speed bump (30).

6. The active control deceleration device for inclined shaft of trackless tunnel transportation according to claim 1 is characterized in that: In the above step 3, the speed adjustment belt (30) is a steel profile. The plurality of speed-adjusting belts (30) are provided with interconnected threading holes (33); The plurality of adjustable speed-reducing belts (30) are fixedly connected via threading holes (33).

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