Experimental device for leveling gravel foundation bed
By designing an experimental device for gravel base beds, the problem of traditional test facilities being unreusable and unable to systematically explore process parameters is solved, and the automation control and measurement efficiency of multi-variable leveling mechanisms is improved, which is applicable to different Type of leveling mechanism.
Patent Information
- Application Number
- CN202421232633.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Traditional gravel base bed leveling test facilities are mostly temporary and cannot be reusable. It is impossible to systematically explore the impact of process parameters such as scraper feeding volume and leveling speed on the leveling effect.
An experimental device including a bench, a mobile trolley, a lifting leveling mechanism, a base bed elevation measurement device and a hydraulic system was designed. The inlet depth of the scraper is controlled by a hydraulic lifting cylinder, the traction winch is controlled by a speed, and the first motor is controlled by a scraper. Rotate to realize automatic adjustment of the leveling mechanism, and combine it with a laser rangefinder to improve measurement efficiency.
Achieve multivariate control of the leveling mechanism, including the adjustment of the scraper feeding amount, rotation speed and forward speed, which enhances the repeatability and versatility of the test, is suitable for different types of leveling mechanisms, improves measurement efficiency and Economicality of experiments.
Smart Images
Figure CN222318489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gravel foundation bed paving, in particular to an experimental device for leveling a gravel foundation bed. Background Art
[0002] The traditional way of underwater leveling is to first dump stones through a ship on the water, and then lower the robot for leveling. The leveling methods include scraper leveling and spiral scraper leveling. As the water depth increases, the surface height difference of the base bed after underwater dumping will further increase. The applicability of traditional leveling robots and the leveling effect of newly developed robots need to be systematically verified by experiments, so as to make targeted improvements to the robot's structural design and working method.
[0003] The variables that need to be controlled in the experiment generally include: the feed amount during leveling, the rotation speed of the spiral scraper, the leveling speed of the leveling robot, etc. The quantities that need to be monitored include the resistance of the base bed to the leveling robot, the leveling effect after leveling, etc. Traditional leveling test facilities are mostly temporary structures, and prototype tests are carried out for specific leveling equipment. When the leveling equipment is replaced, these temporary test platforms are not reusable, and most of them are feasibility verification tests; they cannot systematically explore the performance and leveling effect of the leveling robot for certain process parameters such as the feed amount of the scraper and the forward speed during leveling. Utility Model Content
[0004] The utility model provides an experimental device for gravel base bed leveling, which solves the problem that most of the traditional leveling test facilities are temporary structures. When the leveling equipment is replaced, these temporary test platforms are not reusable and are mostly feasibility verification tests; the scraper feed amount, the forward speed during leveling and the leveling effect cannot be explored.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an experimental device for leveling a gravel base bed, comprising a stand, a movable trolley is provided on the stand, a lifting leveling mechanism is provided on the trolley, the leveling mechanism comprises a scraper, a base bed elevation measuring device is provided at one end of the trolley, the base bed elevation measuring device comprises a movable slider, and a laser rangefinder is provided on the slider.
[0006] In the preferred solution, the stand is a U-shaped structure, with limited tripods set at the four corners of the U-shaped structure, I-rails set on both sides of the stand, wire guide seats set at both ends of the stand, and rotatably connected guide wheels set on the wire guide seats.
[0007] In the preferred solution, a support plate is provided on one side of the two wire guide seats, and a traction winch and a return winch are respectively provided on the two support plates. The traction winch and the return winch are both connected to the guide wheel through a steel wire.
[0008] In a preferred solution, the trolley includes a bracket, a plurality of pulleys are provided at the bottom of the bracket, the pulleys roll against the I-rail, and rotatably connected rollers are provided on both sides of the bracket, and the rollers are connected to the guide wheels through steel wires.
[0009] In a preferred embodiment, the leveling mechanism includes a scraper plate, which is rotatably connected to the rotating shaft of the scraper. A first motor is provided at one end of the rotating shaft of the scraper. The first motor is mounted on the scraper plate, and a plurality of connecting seats are provided on the top of the scraper plate.
[0010] In a preferred solution, a plurality of hydraulic lifting cylinders are provided on the trolley, and one end of the hydraulic lifting cylinders is connected to a connecting seat of the leveling mechanism.
[0011] In the preferred solution, the base bed elevation measuring device includes a U-shaped rail and a screw rod, one end of the slider rests on the U-shaped rail, and the other end of the slider extends out of the U-shaped rail. The slider is provided with a threaded hole, the screw rod is connected to the threaded hole, and a second motor is provided at one end of the screw rod.
[0012] In the preferred solution, a pump station is provided on one side of the stand;
[0013] The pump station is connected to the traction winch, return winch and hydraulic lifting cylinder through oil pipes.
[0014] The beneficial effect of the utility model is that the device can explore the influence of the forward speed of the leveling mechanism, the rotation speed of the scraper and the feed amount of the scraper on the leveling effect and the leveling resistance by controlling variables. At the same time, the scraper of the leveling mechanism can also be replaced to facilitate the exploration of the leveling effects of different types of scrapers.
[0015] The overall device controls the feed depth of the leveling mechanism by the lifting and lowering of the hydraulic lifting cylinder; the rotation speed of the traction winch controls the forward and backward speeds, and at the same time controls the rotation speed of the scraper for the corresponding first motor. These controls are centralized at the pump station for adjustment, realizing the automation of the test process. At the same time, its controllable variables are relatively comprehensive, including the feed amount of the scraper during leveling, the scraper rotation speed, and the forward speed of the leveling mechanism.
[0016] The connection between the trolley and the leveling mechanism is detachable, the scraper can be a vibration wheel or a spiral scraper, the leveling mechanism and the hydraulic lifting cylinder are easy to disassemble and have strong versatility. Corresponding tests can be carried out on scrapers of different types of leveling mechanisms. Compared with the traditional temporary leveling test platform that only tests specific types of robots, it has a wider range of applications and higher economy.
[0017] Scale lines are set on the test bench, and a laser rangefinder is installed on the base bed elevation measuring device to facilitate the measurement of base bed surface elevation data during the test. This auxiliary design is more efficient in obtaining measurement points than traditional manual measurement and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0019] Figure 1 It is an axial side view of the overall structure of the utility model;
[0020] Figure 2 It is a front view of the overall structure of the utility model;
[0021] Figure 3 This utility model Figure 1 A magnified view of center A;
[0022] Figure 4 It is an axial side view of the local structure of the utility model;
[0023] Figure 5 It is an axial side view of the leveling mechanism of the utility model;
[0024] Figure 6 This utility model Figure 1 Magnified view of middle B;
[0025] Figure 7 It is an axonometric view of the utility model bed elevation measuring device;
[0026] In the figure: the stand 1; the guide wire seat 101; the I-rail 102; the limiting tripod 103; the guide wheel 104; the trolley 2; the bracket 201; the roller 202; the pulley 203; the leveling mechanism 3; the scraper plate 301; the connecting seat 302; the scraper 303; the first motor 304; the hydraulic lifting cylinder 4; the bed elevation measuring device 5; the U-rail 501; the slider 502; the screw rod 503; the second motor 504; the laser rangefinder 505; the traction winch 6; the return winch 7; the pump station 8. DETAILED DESCRIPTION
[0027] Embodiment 1:
[0028] like Figure 1-7 In the present invention, the experimental device for leveling the gravel bed comprises a platform 1, a movable trolley 2 is arranged on the platform 1, a lifting leveling mechanism 3 is arranged on the trolley 2, the leveling mechanism 3 comprises a scraper 303, a bed elevation measuring device 5 is arranged at one end of the trolley 2, the bed elevation measuring device 5 comprises a movable slider 502, and a laser rangefinder 505 is arranged on the slider 502. With this structure,
[0029] First, the entire trolley 2 is pulled to the edge of one side of the frame 1 through the cooperation of the traction winch 6 and the return winch 7, so as to facilitate the laying of experimental base bed sand and gravel inside the frame 1, and artificially set some grooves and protrusions on the base bed to simulate the uneven state of the underwater base bed. This operation is generally completed using a small excavator.
[0030] After the laying of the base bed is completed, the scraper 303 of the leveling mechanism 3 is first raised by driving the hydraulic lifting cylinder 4 to ensure that the scraper 303 does not contact the base bed during the return process, and then the traction winch 6 is tightened to pull the trolley 2 back, and the return is paused every 0.5m. The laser rangefinder 505 of the base bed elevation measuring device 5 measures the base bed elevation value every 0.5m in the vertical direction of the trolley 2 movement until the trolley 2 is completely moved to the other side of the platform. At this time, the initial elevation data of the base bed surface can be obtained.
[0031] According to the elevation data of the bed surface and the depth of the bottom of the scraper 303 plate entering the highest point of the bed in the experimental test, the lowering height of the hydraulic lifting cylinder 4 can be calculated. After the scraper 303 is lowered by the hydraulic lifting cylinder 4, the speed of the scraper 303 is set, and then the traction winch 6 is tightened to control the trolley 2 to move forward and level. After the leveling is completed, the elevation measurement operation can be performed to obtain the elevation data of the bed after leveling.
[0032] The device can explore the influence of the forward speed of the leveling mechanism 3, the rotation speed of the scraper 303 and the feed amount of the scraper 303 on the leveling effect and the leveling resistance by controlling variables. At the same time, the leveling mechanism 3 can also be replaced to facilitate the exploration of the leveling effects of different types of scrapers 303.
[0033] The overall device controls the feed depth of the leveling mechanism 3 by the lifting and lowering of the hydraulic lifting cylinder 4; the rotation speed of the traction winch 6 controls the forward and backward speeds, and at the same time controls the rotation speed of the scraper 303 for the corresponding first motor 304. These controls are concentrated at the pump station 8 for adjustment, realizing the automation of the test process. At the same time, its controllable variables are relatively comprehensive, including the feed amount of the scraper 303 during leveling, the rotation speed of the scraper 303, and the forward speed of the leveling mechanism 3.
[0034] The connection between the trolley 2 and the leveling mechanism 3 is detachable, the scraper 303 can be a vibration wheel or a spiral scraper, the leveling mechanism 3 and the hydraulic lifting cylinder 4 are easy to disassemble, and have strong versatility. Corresponding tests can be performed on the scrapers 303 of different types of leveling mechanisms 3. Compared with the traditional temporary leveling test platform that only tests specific types of robots, it has a wider range of applications and higher economy.
[0035] The stand 1 is provided with scale lines, and the base bed elevation measuring device 5 is equipped with a laser rangefinder 505, so as to facilitate the measurement of base bed surface elevation data during the test; this auxiliary design is more efficient in obtaining the measurement points than the traditional manual measurement.
[0036] In the preferred solution, the platform 1 is a U-shaped structure, and the four corners of the U-shaped structure are provided with limited tripods 103, the two sides of the platform 1 are provided with I-shaped rails 102, and the two ends of the platform 1 are provided with wire guide seats 101, and the wire guide seats 101 are provided with guide wheels 104 connected in rotation. With this structure, a vertical scale line is provided on the platform 1. When the trolley 2 needs to move forward, the traction winch 6 and the return winch 7 are driven so that the traction winch 6 reels the wire and the return winch 7 releases the wire, so that the trolley 2 moves forward. During the movement, the hydraulic lifting cylinder 4 is driven so that the leveling mechanism 3 levels the gravel.
[0037] In a preferred solution, a support plate is provided on one side of the two guide wire seats 101, and a traction winch 6 and a return winch 7 are provided on the two support plates respectively. The traction winch 6 and the return winch 7 are both connected to the guide wheel 104 through a steel wire.
[0038] In the preferred embodiment, the trolley 2 includes a bracket 201, a plurality of pulleys 203 are provided at the bottom of the bracket 201, the pulleys 203 roll against the I-rail 102, and rotatably connected rollers 202 are provided on both sides of the bracket 201, and the rollers 202 are connected to the guide wheels 104 respectively through steel wires.
[0039] In a preferred embodiment, the leveling mechanism 3 includes a scraper plate 301, which is rotatably connected to the rotating shaft of the scraper 303. A first motor 304 is provided at one end of the rotating shaft of the scraper 303. The first motor 304 is mounted on the scraper plate 301. A plurality of connecting seats 302 are provided on the top of the scraper plate 301. With this structure,
[0040] In the preferred solution, a plurality of hydraulic lifting cylinders 4 are provided on the trolley 2, and one end of the hydraulic lifting cylinders 4 is connected to the connection seat 302 of the leveling mechanism 3. With this structure, the overall device controls the feed depth of the leveling mechanism 3 by the lifting and lowering of the hydraulic lifting cylinders 4; the rotation speed of the traction winch 6 controls the forward and backward speeds, and at the same time controls the rotation speed of the scraper 303 for the corresponding first motor 304. These controls are all centralized at the pump station 8 for adjustment, realizing the automation of the test process, and at the same time, the controllable variables are more comprehensive, including the feed amount of the scraper 303 during leveling, the rotation speed of the scraper 303, and the forward speed of the leveling mechanism 3.
[0041] In the preferred solution, the bed elevation measuring device 5 includes a U-shaped rail 501 and a screw rod 503, one end of the slider 502 is against the U-shaped rail 501, and the other end of the slider 502 extends out of the U-shaped rail 501. The slider 502 is provided with a threaded hole, and the screw rod 503 is connected to the threaded hole. A second motor 504 is provided at one end of the screw rod 503. According to this structure, scale lines are provided on both sides of the inside of the platform 1, and a laser rangefinder 505 is installed on the bed elevation measuring device 5 to facilitate the measurement of the bed surface elevation data during the test; this auxiliary design is more efficient than the traditional manual measurement to obtain the measurement point. Drive the second motor 504 to rotate the screw rod 503, so that the slider 502 moves, so that the laser rangefinder 505 moves, so that the laser rangefinder 505 can measure the bed surface elevation data on both sides.
[0042] In the preferred solution, a pump station 8 is provided on one side of the stand 1;
[0043] The pump station 8 is connected to the traction winch 6, the return winch 7 and the hydraulic lifting cylinder 4 through the oil pipe. With this structure, the overall device controls the feed depth of the leveling mechanism 3 by the lifting and lowering of the hydraulic lifting cylinder 4; the rotation speed of the traction winch 6 controls the forward and backward speeds, and at the same time controls the rotation speed of the scraper 303 for the corresponding first motor 304. These controls are all centralized at the pump station 8 for adjustment, realizing the automation of the test process. At the same time, the controllable variables are more comprehensive, including the feed amount of the scraper 303 during leveling, the rotation speed of the scraper 303, and the forward speed of the leveling mechanism 3.
[0044] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. An experimental device for leveling a gravel bed, characterized by: The device comprises a platform (1), a movable trolley (2) is provided on the platform (1), a lifting leveling mechanism (3) is provided on the trolley (2), the leveling mechanism (3) comprises a scraper (303), a base bed elevation measuring device (5) is provided at one end of the trolley (2), the base bed elevation measuring device (5) comprises a movable slider (502), and a laser rangefinder (505) is provided on the slider (502).
2. The experimental device for leveling a gravel bed according to claim 1 is characterized in that: The stand (1) is a U-shaped structure, and limit tripods (103) are arranged at the four corners of the U-shaped structure. I-shaped rails (102) are arranged on both sides of the stand (1), and wire guide seats (101) are arranged at both ends of the stand (1). A guide wheel (104) which is rotatably connected is arranged on the wire guide seat (101).
3. The experimental device for leveling a gravel bed according to claim 2 is characterized in that: A support plate is provided on one side of each of the two wire guide seats (101), and a traction winch (6) and a return winch (7) are provided on the two support plates respectively. The traction winch (6) and the return winch (7) are both connected to the guide wheel (104) via a steel wire.
4. The experimental device for leveling a gravel bed according to claim 1 is characterized in that: The trolley (2) comprises a bracket (201), a plurality of pulleys (203) are provided at the bottom of the bracket (201), the pulleys (203) roll against the I-rail (102), and rotatably connected rollers (202) are provided on both sides of the bracket (201), and the rollers (202) are respectively connected to the guide wheels (104) via steel wires.
5. The experimental device for leveling a gravel bed according to claim 1 is characterized in that: The leveling mechanism (3) comprises a scraper plate (301), the scraper plate (301) being rotatably connected to the rotating shaft of the scraper (303), a first motor (304) being provided at one end of the rotating shaft of the scraper (303), the first motor (304) being mounted on the scraper plate (301), and a plurality of connecting seats (302) being provided on the top of the scraper plate (301).
6. The experimental device for leveling a gravel bed according to claim 1 is characterized by: A plurality of hydraulic lifting cylinders (4) are provided on the trolley (2), and one end of the hydraulic lifting cylinder (4) is connected to a connecting seat (302) of the leveling mechanism (3).
7. The experimental device for leveling a gravel bed according to claim 1 is characterized in that: The bed height measuring device (5) comprises a U-shaped rail (501) and a screw rod (503); one end of a slider (502) abuts against the U-shaped rail (501); the other end of the slider (502) extends out of the U-shaped rail (501); a threaded hole is provided on the slider (502); the screw rod (503) is connected to the threaded hole; and a second motor (504) is provided at one end of the screw rod (503).
8. The experimental device for leveling a gravel bed according to claim 1 is characterized by: A pump station (8) is provided on one side of the stand (1); The pump station (8) is connected to the traction winch (6), the return winch (7) and the hydraulic lifting cylinder (4) through an oil pipe.