Roadbed and pavement strength detector

Abstract

The utility model discloses a roadbed pavement strength detector, which relates to the roadbed pavement strength detection technical field, and comprises a base, a work bench and a pressure detection bench, the middle part of the top end of the base is connected with the work bench, one side of the top end of the base is welded with a fixing frame, and two sides of the top end of the fixing frame are provided with electric push columns. When the roadbed and pavement strength detector is used, the periphery and the upper part of a pavement sample are completely covered by the protective cover in the auxiliary mechanism, so that when the pavement sample is extruded to fly out fragments, the fragments are covered by the protective cover, and the fragments are prevented from flying out from the periphery and the upper part to hurt workers; and in the process of moving the pressure detection table upwards, the material pushing plate can sweep the blocked fragments into the collecting box, so that the fragments on the workbench can be cleaned without waiting for returning of the pressure detection table, time and energy are saved, and when the roadbed and pavement strength detector is used, the effects of blocking and cleaning the fragments are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roadbed and pavement strength detection, in particular to a roadbed and pavement strength detector. Background Art

[0002] The roadbed and pavement strength tester, also known as the pavement material strength tester, is a multifunctional experimental instrument used to measure the strength of highway roadbed and pavement materials. It is mainly used to measure and evaluate the compressive strength, splitting strength, elastic modulus and other properties of roadbed and pavement materials, as well as to conduct Marshall tests on asphalt concrete, bearing ratio tests on roadbed soil and various pavement materials.

[0003] According to patent number CN221038478U, a roadbed and pavement strength tester includes a base, a mounting frame is fixedly connected to the top of the base, and a slide groove is provided on one side of the mounting frame. In the utility model, when the output end of the hydraulic cylinder is pressed down, the bar gear and the rack are meshed, which can drive the two protection plates to move closer to the placement table, and finally form a package for the placement table, so that the fragments of the road surface sample that fly out after being squeezed by the detection head can be effectively blocked, which improves the safety when performing road surface strength testing. Because the moving wheels can be stored, when it is necessary to move the device, start the reduction motor, and when the support rod is rotated to be vertical to the ground, the bottom end of the base can be separated from the ground. At this time, the user can move the device through the moving wheels. Through this design, workers do not need to carry the device when moving it, which improves the convenience of using the device.

[0004] However, during the use of the above-mentioned patent, although the placement table is wrapped by a mobile protective plate to block the fragments that fly out after the pavement sample is squeezed, this shielding method can only wrap the four sides of the pavement sample, and its top surface is covered, which may cause some fragments to fly out from above and cause harm to the staff. In addition, the protective plate also restricts the staff from cleaning the fragments on the workbench to a certain extent, thereby affecting the use of the roadbed and pavement strength tester. Utility Model Content

[0005] The purpose of the utility model is to provide a roadbed and pavement strength detector to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a roadbed and pavement strength tester, comprising a base, a workbench and a pressure testing platform, the workbench is connected to the middle of the top of the base, and a fixed frame is welded to one side of the top of the base, electric push columns are installed on both sides of the top of the fixed frame, and the output end of the electric push column is connected to a lifting frame, and the bottom end of the lifting frame is connected to the pressure testing platform, the outer wall of the workbench is provided with an auxiliary mechanism, and the auxiliary mechanism includes a protective cover, a fixed column, a spring, a transmission plate, a rack, a limit column, a gear, a threaded column, a push plate, a fixed plate and a collection box, the outer wall of the pressure testing platform is sleeved with a protective cover, and the top of the protective cover is slidably connected to the fixed column, and the outer wall of the fixed column is sleeved with a spring, the outer wall of the protective cover is welded with a transmission plate, and one side of the outer wall of the transmission plate is connected to a rack.

[0007] Preferably, the top end of the rack is slidably connected to a limiting column, and the side of the rack away from the limiting column is meshingly connected to a gear.

[0008] Preferably, a threaded column is welded inside the gear, and the bottom end of the limiting column is welded to the base.

[0009] Preferably, a push plate is threadedly connected to the middle portion of the outer wall of the threaded column, and a fixing plate is slidably connected to the inside of a side of the push plate close to the rack.

[0010] Preferably, both sides of the outer wall of the fixing plate are connected to the fixing frame via support plates, and the inside of the base is connected to a collection box via a limiting cavity.

[0011] Preferably, a movable cavity is provided on a side of the top of the base close to the gear, and an elastic telescopic mechanism is formed between the protective cover, the fixed column and the spring.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: when the roadbed and pavement strength tester is in use, the protective cover in the auxiliary mechanism completely covers the road surface sample on all sides and on the top, and then when the road surface sample is squeezed and fragments fly out, they are blocked by the protective cover to prevent the fragments from flying out from all sides and on the top and injuring the staff; and in the process of the pressure testing platform moving up, the push plate will sweep the blocked fragments into the collection box, and then the debris on the workbench can be cleaned up without waiting for the pressure testing platform to return to its position, saving time and energy, thereby facilitating the blocking and cleaning of debris when the roadbed and pavement strength tester is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional cutaway structure of the base of the utility model;

[0015] Figure 3This is a schematic diagram of the three-dimensional structure of the lifting frame of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the pressure testing platform of the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the auxiliary mechanism of the utility model;

[0018] Figure 6 It is a schematic diagram of the three-dimensional cutaway structure of the protective cover of the utility model.

[0019] In the figure: 1. base; 2. workbench; 3. fixed frame; 4. lifting frame; 5. electric push column; 6. pressure testing table; 7. auxiliary mechanism; 701. protective cover; 702. fixed column; 703. spring; 704. transmission plate; 705. rack; 706. limit column; 707. gear; 708. threaded column; 709. push plate; 710. fixed plate; 711. collection box. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 6The utility model provides a technical solution: a roadbed and pavement strength tester, comprising a base 1, a workbench 2 and a pressure testing platform 6, the middle part of the top of the base 1 is connected to the workbench 2, and a fixing frame 3 is welded on one side of the top of the base 1, electric push columns 5 are installed on both sides of the top of the fixing frame 3, and the output end of the electric push column 5 is connected to the lifting frame 4, and the bottom end of the lifting frame 4 is connected to the pressure testing platform 6, an auxiliary mechanism 7 is arranged on the outer wall of the workbench 2, and the auxiliary mechanism 7 includes a protective cover 701, a fixed column 702, a spring 703, a transmission plate 704, a rack 705, a limit column 706, a gear 707, a threaded column 708, a push plate 709, a fixed plate 710 and a collection box 711, the outer wall of the pressure testing platform 6 is sleeved with a protective cover 701, and the top of the protective cover 701 is slidably connected to the fixed column 702, and the outer wall of the fixed column 702 is sleeved with a spring 703, the outer wall of the protective cover 701 is welded with a transmission plate 704, and the outer wall of the transmission plate 704 is A rack 705 is butted against the side; the top of the rack 705 is internally slidably connected to a limiting column 706, and the side of the rack 705 away from the limiting column 706 is meshed with a gear 707; a threaded column 708 is welded inside the gear 707, and the bottom end of the limiting column 706 is welded to the base 1; a push plate 709 is threadedly connected to the middle of the outer wall of the threaded column 708, and a fixed plate 710 is internally slidably connected to the side of the push plate 709 close to the rack 705; the outer wall of the fixed plate 710 is connected on both sides by The support plate is connected to the fixed frame 3, and the inside of the base 1 is connected to the collection box 711 through a limiting cavity; a movable cavity is opened on the side of the top of the base 1 close to the gear 707, and an elastic telescopic mechanism is formed between the protective cover 701, the fixed column 702 and the spring 703; the bottom end of the fixed column 702 is connected to the pressure detection platform 6, the movable cavity corresponds to the rack 705, the collection box 711 and the base 1 are slidably connected, and the outer walls of the threaded column 708 are connected to the support plate through bearing seats on both sides.

[0022] In specific implementation, in the process of testing the strength of the roadbed and pavement by the strength tester, in order to prevent the fragments flying out after the pavement sample is squeezed from injuring the staff, the pressure testing platform 6 is connected to the protective cover 701, and when the pressure testing platform 6 moves down, the protective cover 701 will be driven to move together, and then when the pressure testing platform 6 contacts the pavement sample on the workbench 2, the protective cover 701 will completely cover the surrounding and top of the pavement sample, and when the pressure testing platform 6 continues to move down, the protective cover 701 will contact the base 1 and then move upward, and because the protective cover 701 is slidably connected to the fixed column 702, the movement of the protective cover 701 is guided by the fixed column 702 at this time;

[0023] When the protective cover 701 moves upward, it squeezes the spring 703 to cause it to deform, and then the spring 703 resets the auxiliary protective cover 701 to return to its original position. Then, when the pressure testing platform 6 presses down to test the strength of the road surface sample, the protective cover 701 will not hinder it. When the road surface sample is squeezed and fragments fly out, the protective cover 701 blocks it, preventing the fragments from flying out from all sides and above to injure the staff.

[0024] Because the protective cover 701 is connected to the rack 705 through the transmission plate 704, when the protective cover 701 moves, it will drive the rack 705 to move together, and then when the protective cover 701 moves down, the rack 705 moves down together, and because the top of the rack 705 is internally slidably connected to the limiting column 706, the movement of the rack 705 is guided by the limiting column 706 at this time, so that the rack 705 moves smoothly, and because the rack 705 and the gear 707 are meshingly connected, when the rack 705 moves up, it will drive the gear 707 to rotate, and then the rotation of the gear 707 drives the threaded column 708 to rotate, because the threaded column 708 and the push plate 709 are threadedly connected, at this time, the threaded column 708 rotates to make the push plate 709 move away from the gear 707, and because the push plate 709 and the fixed plate 710 are slidably connected, at this time, the movement of the push plate 709 is guided by the fixed plate 710;

[0025] Furthermore, when the pressure testing platform 6 moves upward, the push plate 709 will sweep across the workbench 2, and then sweep the pavement samples and blocked fragments on the workbench 2 into the collection box 711. Therefore, before the next pavement sample test, the staff does not need to wait for the pressure testing platform 6 to return to its position and then manually clean the pavement samples and debris on the workbench 2, thereby saving time and energy, and thus facilitating the blocking and cleaning of debris when the roadbed and pavement strength tester is used.

[0026] To sum up, when using this roadbed and pavement strength tester, first place the roadbed and pavement sample on the workbench 2, then start the electric push columns 5 on both sides of the fixed frame 3, so that the electric push columns 5 contract and drive the lifting frame 4 to move downward, so that the pressure testing platform 6 contacts the pavement sample on the workbench 2, and then applies vertical pressure to the pavement sample, and at the same time measures and records the deformation and damage of the sample, and then calculates the compressive strength, bearing ratio and other performance indicators of the sample based on the measured data. This is the prior art and will not be elaborated on here. The protective cover 701 in the auxiliary mechanism 7 prevents fragments from flying out from all around and above to injure the staff, and during the upward movement of the pressure testing platform 6, the blocked fragments are swept into the collection box 711 by the push plate 709, and then the debris on the workbench 2 can be cleaned up without waiting for the pressure testing platform 6 to return to its position. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roadbed and pavement strength tester, comprising a base (1), a workbench (2) and a pressure tester (6), characterized in that: A workbench (2) is connected to the middle of the top of the base (1), and a fixing frame (3) is welded to one side of the top of the base (1), electric push columns (5) are installed on both sides of the top of the fixing frame (3), and the output end of the electric push column (5) is connected to a lifting frame (4), and the bottom end of the lifting frame (4) is connected to a pressure detection platform (6), and an auxiliary mechanism (7) is arranged on the outer wall of the workbench (2), and the auxiliary mechanism (7) includes a protective cover (701), a fixing column (702), a spring (703), a transmission plate (704), a rack (70 5), a limiting column (706), a gear (707), a threaded column (708), a push plate (709), a fixed plate (710) and a collection box (711), the outer wall of the pressure detection platform (6) is sleeved with a protective cover (701), and a fixed column (702) is slidably connected to the top of the protective cover (701), and the outer wall of the fixed column (702) is sleeved with a spring (703), the outer wall of the protective cover (701) is welded with a transmission plate (704), and a rack (705) is connected to one side of the outer wall of the transmission plate (704).

2. A roadbed and pavement strength tester according to claim 1, characterized in that: The top end of the rack (705) is internally slidably connected to a limiting post (706), and the side of the rack (705) away from the limiting post (706) is meshingly connected to a gear (707).

3. A roadbed and pavement strength tester according to claim 2, characterized in that: A threaded column (708) is welded inside the gear (707), and the bottom end of the limiting column (706) is welded to the base (1).

4. A roadbed and pavement strength tester according to claim 3, characterized in that: A push plate (709) is threadedly connected to the middle of the outer wall of the threaded column (708), and a fixing plate (710) is slidably connected to the inside of the push plate (709) on one side close to the rack (705).

5. A roadbed and pavement strength tester according to claim 4, characterized in that: Both sides of the outer wall of the fixing plate (710) are connected to the fixing frame (3) via support plates, and the interior of the base (1) is connected to a collection box (711) via a limiting cavity.

6. A roadbed and pavement strength tester according to claim 1, characterized in that: Said A movable cavity is provided on one side of the top of the base (1) close to the gear (707), and the protective cover (701) is provided with a movable cavity. An elastic telescopic mechanism is formed between the fixed column (702) and the spring (703).

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