Pavement material strength testing machine with protection function

Abstract

The utility model discloses a pavement material strength testing machine with a protection function, which relates to the technical field of strength testing and comprises a base, a pair of mounting pipes fixedly arranged on the base, a lifting platform slidably arranged on the pair of mounting pipes, and an electric telescopic rod fixedly arranged in the base and used for controlling the height of the lifting platform. A bearing table is fixedly arranged on the lifting table, an upper transverse plate is fixedly arranged on the pair of mounting pipes and located above the lifting table, a hydraulic cylinder is fixedly arranged in the upper transverse plate, a detection module and a pressing head are fixedly arranged at the telescopic end of the hydraulic cylinder, and the outer side of the upper transverse plate is sleeved with a protective cover; by arranging the large rope disc and the small rope disc, the protective cover can be buckled on the lifting table when the lifting table moves slightly, and when materials are crushed and scraps splash, a closed space can be formed through the lifting table, the protective cover and the upper transverse plate so as to prevent the scraps from splashing outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of strength testing, in particular to a road material strength testing machine with a protective function. Background Art

[0002] The pavement material strength tester is an instrument for testing the strength index of high-grade highway subgrade and pavement materials. It can test the compressive strength, bending strength, splitting, Marshall stability and other tests on pavement materials such as asphalt mixtures.

[0003] For example, in the utility model patent with the announcement number CN216350060U, a road material strength tester is disclosed, which relates to the technical field of test detection, including a workbench, a lifting platform arranged on the workbench, and a load tray arranged on the lifting platform, and the lifting platform has abutment parts for abutting the two sides of the load tray hingedly connected on the corresponding side walls of the lifting platform, and the lifting platform is provided with a driving member for driving the two abutment parts to abut against the two sides of the load tray, and a baffle is detachably provided on the load tray along the circumferential direction;

[0004] However, during the test, since most of the pavement materials are brittle materials, instantaneous collapse often occurs, and the broken materials will splash everywhere. These debris can easily cause harm to the staff and reduce the safety. Therefore, providing a pavement material strength testing machine with a protective function is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a pavement material strength testing machine with a protective function to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pavement material strength testing machine with a protective function, comprising a base, a pair of mounting tubes fixedly arranged on the base, a lifting platform slidably arranged on the pair of mounting tubes, an electric telescopic rod for controlling the height of the lifting platform fixedly arranged in the base, a bearing platform fixedly arranged on the lifting platform, an upper cross plate fixedly arranged on the pair of mounting tubes above the lifting platform, a hydraulic cylinder fixedly arranged in the upper cross plate, a detection module and a pressure head fixedly arranged at the telescopic end of the hydraulic cylinder, a protective cover mounted on the outer side of the upper cross plate, and the protective cover can be dropped onto the lifting platform when the lifting platform rises, thereby forming a closed space through the lifting platform, the protective cover and the upper cross plate.

[0007] Preferably, a large rope drum is rotatably provided on the top of the mounting tube, a small rope drum is fixedly connected to one side of the large rope drum, a pull rope 1 is wound around the small rope drum, an opening is provided on the side wall of the mounting tube, an extension block is fixedly provided on the lifting platform that passes through the opening and extends into the mounting tube, one end of the pull rope 1 is inserted into the mounting tube and fixedly connected to the extension block, a pull rope 2 is wound around the large rope drum, and one end of the pull rope 2 is fixedly connected to the protective cover.

[0008] Preferably, the diameter of the large rope drum is larger than the diameter of the small rope drum.

[0009] Preferably, two supporting wheels are installed on the upper and lower sides of the four corners of the upper horizontal plate, and the supporting wheels are pressed against the inner wall surface of the protective cover.

[0010] Beneficial Effects

[0011] The utility model provides a pavement material strength testing machine with a protective function, which has the following beneficial effects: when the lifting platform rises, the pull rope will be wound around the small rope drum, and at the same time the large rope drum releases the pull rope to make the protective cover descend; because the diameter of the large rope drum is larger than that of the small rope drum, the protective cover can move a greater distance relative to the lifting platform, so that the protective cover can be buckled on the lifting platform when the lifting platform moves a small amount; when the material is crushed and debris splashes, a closed space can be formed by the lifting platform, the protective cover and the upper horizontal plate to prevent the debris from splashing outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the main internal structure diagram of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0015] Figure 4 for Figure 2 A partial enlarged view of B in the middle;

[0016] Figure 5 This is a diagram of the protective cover when it lands on the lifting platform.

[0017] In the figure: 1. base; 2. mounting tube; 3. lifting platform; 4. electric telescopic rod; 5. bearing platform; 6. upper horizontal plate; 7. hydraulic cylinder; 8. detection module; 9. pressure head; 10. protective cover; 11. opening; 12. extension block; 13. large rope drum; 14. small rope drum; 15. pull rope one; 16. pull rope two; 17. support wheel. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-5 The utility model provides a technical solution: a road material strength testing machine with a protective function, comprising a base 1, a pair of mounting tubes 2 are fixedly arranged on the base 1, a lifting platform 3 is slidably arranged on the pair of mounting tubes 2, an electric telescopic rod 4 for controlling the height of the lifting platform 3 is fixedly arranged in the base 1, a bearing platform 5 for placing the strength of the test material is fixedly arranged on the lifting platform 3, an upper cross plate 6 is fixedly arranged on the pair of mounting tubes 2 above the lifting platform 3, a hydraulic cylinder 7 is fixedly arranged in the upper cross plate 6, a detection module 8 and a pressure head 9 are fixedly arranged at the telescopic end of the hydraulic cylinder 7, a protective cover 10 is sleeved on the outer side of the upper cross plate 6, and when the lifting platform 3 rises, the protective cover 10 can be dropped onto the lifting platform 3, and a closed space is formed by the lifting platform 3, the protective cover 10 and the upper cross plate 6 to prevent debris from splashing.

[0020] As an embodiment of the present invention, a large rope drum 13 is rotatably arranged on the top of the mounting tube 2, a small rope drum 14 is fixedly connected to one side of the large rope drum 13, a pull rope 15 is wound around the small rope drum 14, an opening 11 is opened on the side wall of the mounting tube 2, an extension block 12 is fixedly arranged on the lifting platform 3, which passes through the opening 11 and extends into the mounting tube 2, one end of the pull rope 15 is inserted into the mounting tube 2 and is fixedly connected to the extension block 12, a pull rope 2 16 is wound around the large rope drum 13, one end of the pull rope 2 16 is fixedly connected to the protective cover 10, when the lifting platform 3 rises, the pull rope 2 16 wound in the large rope drum 13 can be pulled downward by the dead weight of the protective cover 10, so that the large rope drum 13 rotates, and at the same time, the pull rope 15 will be wound around the small rope drum 14, so as to realize the relative movement of the lifting platform 3 and the protective cover 10, the diameter of the large rope drum 13 is larger than the diameter of the small rope drum 14, so that when the lifting platform 3 moves, the moving distance of the protective cover 10 is greater than the moving distance of the lifting platform 3.

[0021] As an embodiment of the utility model, two support wheels 17 are installed on the upper and lower sides of the four corners of the upper horizontal plate 6. The support wheels 17 are pressed against the inner wall surface of the protective cover 10 to facilitate the positioning of the protective cover 10 and prevent the protective cover 10 from frictionally contacting the upper horizontal plate.

[0022] The working principle and use process of the utility model are as follows: when in use, the test material is placed on the load-bearing platform 5, the electric telescopic rod 4 is started to drive the lifting platform 3 to rise, and the load-bearing platform 5 is moved to the bottom of the pressure head 9. When the lifting platform 3 rises, the pull rope 15 will be wound around the small rope drum 14, and at the same time, the large rope drum 13 releases the pull rope 2 16 to make the protective cover 10 drop. Since the diameter of the large rope drum 13 is larger than the small rope drum 14, the protective cover 10 can move a greater distance relative to the lifting platform 3, so that the protective cover 10 can be buckled on the lifting platform 3 when the lifting platform 3 moves a small amount, and the pressure head 9 is driven downward by the hydraulic cylinder 7 to test the strength of the material. When the material is crushed and debris splashes, a closed space can be formed by the lifting platform 3, the protective cover 10, and the upper horizontal plate 6 to prevent the debris from splashing outward.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road material strength testing machine with protective function, characterized in that: The utility model comprises a base (1), a pair of mounting tubes (2) are fixedly arranged on the base (1), a lifting platform (3) is slidably arranged on the pair of mounting tubes (2), an electric telescopic rod (4) for controlling the height of the lifting platform (3) is fixedly arranged inside the base (1), a bearing platform (5) is fixedly arranged on the lifting platform (3), an upper horizontal plate (6) is fixedly arranged on the pair of mounting tubes (2) above the lifting platform (3), a hydraulic cylinder (7) is fixedly arranged inside the upper horizontal plate (6), a detection module (8) and a pressure head (9) are fixedly arranged at the telescopic end of the hydraulic cylinder (7), a protective cover (10) is mounted on the outer side of the upper horizontal plate (6), and when the lifting platform (3) rises, the protective cover (10) can be lowered onto the lifting platform (3), so that a closed space is formed by the lifting platform (3), the protective cover (10) and the upper horizontal plate (6).

2. A road material strength testing machine with protective function according to claim 1, characterized in that: A large rope drum (13) is rotatably arranged at the top of the mounting tube (2), a small rope drum (14) is fixedly connected to one side of the large rope drum (13), a pull rope (15) is wound around the small rope drum (14), an opening (11) is opened on the side wall of the mounting tube (2), an extension block (12) is fixedly arranged on the lifting platform (3) and passes through the opening (11) and extends into the mounting tube (2), one end of the pull rope (15) penetrates into the mounting tube (2) and is fixedly connected to the extension block (12), a pull rope (16) is wound around the large rope drum (13), and one end of the pull rope (16) is fixedly connected to the protective cover (10).

3. A road material strength testing machine with protective function according to claim 2, characterized in that: The diameter of the large rope drum (13) is greater than the diameter of the small rope drum (14).

4. A road material strength testing machine with protective function according to claim 1, characterized in that: Two supporting wheels (17) are installed on the upper and lower sides of the four corners of the upper transverse plate (6), and the supporting wheels (17) are pressed against the inner wall surface of the protective cover (10).

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