Strength testing device for asphalt concrete

Abstract

The utility model provides a strength testing device for asphalt concrete, which relates to the technical field of strength testing devices and comprises a base, a chassis is fixedly connected to one side of the top of the base, electric telescopic rods are symmetrically arranged on two sides of the chassis, one end of each electric telescopic rod is fixedly connected with one side of the top of the base, and the other end of each electric telescopic rod is fixedly connected with the other side of the top of the base. One end of the electric telescopic rod is fixedly connected with the threaded rod, the other end of the electric telescopic rod is fixedly connected with the same rectangular plate, the bottom of the rectangular plate is fixedly connected with an auxiliary block, and the bottom of the auxiliary block is fixedly connected with a pressing disc. And the threaded rod can drive the pressing plate to move on the outer surfaces of the threaded rod and the round rod until the pressing plate and the connecting plate completely clamp the wound wire body, so that the wire body can be arranged and fixed, the wire body can be prevented from falling onto the pressing disc and being damaged, and normal operation of an instrument is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of strength testing devices, in particular to a strength testing device for asphalt concrete. Background Art

[0002] Asphalt pavement test instruments are professional instruments for testing the performance of asphalt mixture pavements. The main principle is to simulate the load effect on the pavement when a vehicle passes through an asphalt mixture pavement to test parameters such as the strength, stability, and durability of the pavement.

[0003] When an asphalt pavement test instrument is in use, it needs to be powered on, that is, the wire body is connected to the power supply. However, for the convenience of using the instrument and reducing the spatial limitation of the instrument, the wire body is set to a relatively long length. However, the overly long wire body is prone to forming piles during use. If the wire body falls on the pressure plate of the instrument, the pressure plate is very likely to press the wire body during testing, which will cause damage to the wire body and affect the normal operation of the instrument. Summary of the Utility Model

[0004] The utility model provides a strength testing device for asphalt concrete to solve the problem that the overly long wire body is prone to forming piles during use. If the wire body falls on the pressure plate of the instrument, the pressure plate is very likely to press the wire body during testing, which will cause damage to the wire body and affect the normal operation of the instrument.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A strength testing device for asphalt concrete, including a base. One side of the top of the base is fixedly connected with a chassis. Electric telescopic rods are symmetrically arranged on both sides of the chassis. One end of each of the two electric telescopic rods is fixedly connected with one side of the top of the base, and the other end of the electric telescopic rod is fixedly connected with the same rectangular plate. A auxiliary block is fixedly connected to the bottom of the rectangular plate. A pressure plate is fixedly connected to the bottom of the auxiliary block. A wire body is arranged on one side of the auxiliary block. A wire management device is arranged on one side of the base. The wire management device includes two extension blocks. One side of each of the two extension blocks is fixedly connected with one side of the base. A threaded rod and a round rod are respectively arranged and connected inside the inner walls of the two extension blocks. One end of the round rod is fixedly connected with the inner wall of the extension block. A pressing plate is threadedly connected to the outer surface of the threaded rod. The inner wall of the pressing plate is slidably connected to the outer surface of the round rod. The top ends of the threaded rod and the round rod are fixedly connected with the same connecting plate. The other side of the top of the base is fixedly connected with a display. A protection device is arranged on one side of the display.

[0006] The effects achieved by the above components are as follows: By setting the threaded rod and the round rod, the long and redundant wire is wound around the outer surfaces of the threaded rod and the round rod. When the threaded rod is rotated, the threaded rod will drive the pressing plate to move on the outer surfaces of the threaded rod and the round rod until the pressing plate and the connecting plate completely clamp the wound wire, so that the wire can be sorted and fixed, which is conducive to preventing the wire from falling onto the pressure plate and causing damage to the wire, and facilitating the normal operation of the instrument.

[0007] Preferably, rubber plates are fixedly connected to the sides of the pressing plate and the connecting plate that are close to each other, and grooves are evenly formed on one side of each rubber plate.

[0008] The effects achieved by the above components are as follows: By setting the rubber plates with grooves, the friction on one side of the clamping plate and the connecting plate can be increased, making the clamping of the wire by the pressing plate and the connecting plate tighter, and at the same time, it can play a certain protective role for the wire.

[0009] Preferably, a bearing is fixedly connected to the outer surface of the threaded rod, and the outer surface of the bearing is fixedly connected to the inner wall of the extension block.

[0010] The effects achieved by the above components are as follows: By setting the bearing, the friction between the threaded rod and the extension block can be reduced when the threaded rod is rotated, making it more labor-saving to rotate the threaded rod.

[0011] Preferably, one end of the threaded rod passes through the inner wall of the extension block and is fixedly connected to an operating block, and protrusions are provided on the outer surface of the operating block.

[0012] The effects achieved by the above components are as follows: By setting the operating block, rotating the operating block can drive the threaded rod to rotate. At the same time, protrusions are provided on the outer surface of the operating block, which can effectively increase the friction on the outer surface of the operating block and play an anti-slip role when rotating the operating block.

[0013] Preferably, a nut is threadedly connected to the outer surface of the threaded rod, and the nut is arranged between the pressing plate and the extension block.

[0014] The effects achieved by the above components are as follows: By setting the nut and rotating the nut so that one side of the nut abuts against one side of the pressing plate, the pressing plate can be limited, which is conducive to preventing the limit of the wire by the pressing plate from loosening.

[0015] Preferably, the protection device includes a protection plate, and one side of the protection plate is rotatably connected to one side of the display.

[0016] The effects achieved by the above components are as follows: By setting the protection plate and rotating the protection plate so that one side of the protection plate completely covers the display screen of the display, the display screen of the display can be covered and protected, which is conducive to preventing the display screen from being directly impacted by external forces and causing damage to the display screen.

[0017] Preferably, a round hole block is fixedly connected to one side of the protection plate, an installation block is fixedly connected to one side of the display, a plug pin is fixedly connected to one side of the installation block, and the size and shape of the outer surface of the plug pin are adapted to the size and shape of the inner wall of the round hole block.

[0018] The effect achieved by the above components is that by setting the plug pin and inserting the plug pin into the inner wall of the round hole block, the plug pin can limit the round hole block and the protection plate, which is beneficial to preventing the display from detaching from the protection of the protection plate.

[0019] Preferably, a clamping block is fixedly connected to one end of the plug pin. The cross-section of the clamping block is an isosceles trapezoid, and the clamping block is made of rubber.

[0020] The effect achieved by the above components is that by setting the clamping block, one end of the clamping block is smaller, which is convenient for inserting the clamping block into the inner wall of the round hole block. At the same time, the other end of the clamping block is larger, which can limit the round hole block and is beneficial to preventing the round hole block from detaching from the limit of the plug pin.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0022] In the present utility model, by setting the threaded rod and the round rod, the long and redundant wire bodies are wound around the outer surfaces of the threaded rod and the round rod. The threaded rod can drive the pressing plate to move on the outer surfaces of the threaded rod and the round rod until the pressing plate and the connecting plate completely clamp the wound wire bodies, so that the wire bodies can be sorted and fixed. Furthermore, it is beneficial to prevent the wire bodies from falling onto the pressing plate and causing damage to the wire bodies, facilitating the normal operation of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the main body of the present utility model;

[0024] Figure 2 is a three-dimensional structural schematic diagram of the wire management device of the present utility model;

[0025] Figure 3 is the present utility model Figure 2 is an enlarged structural schematic diagram at A of the present utility model;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the protection device of the present utility model;

[0027] Figure 5 is the present utility model Figure 4 is an enlarged structural schematic diagram at B of the present utility model

[0028] Legend: 1. Base; 2. Chassis; 3. Electric telescopic rod; 4. Rectangular plate; 5. Auxiliary block; 6. Pressure plate; 7. Wire body; 8. Wire management device; 81. Extension block; 82. Threaded rod; 83. Round rod; 84. Pressing plate; 85. Connecting plate; 86. Rubber plate; 87. Bearing; 88. Operating block; 89. Nut; 9. Protection device; 91. Protection plate; 92. Round hole block; 93. Mounting block; 94. Plug; 95. Clamping block; 10. Display. Detailed implementation

[0029] Example 1, referring to Figures 1 - 3 As shown, this example discloses a strength testing device for asphalt concrete, including a base 1. One side of the top of the base 1 is fixedly connected with a chassis 2. Electric telescopic rods 3 are symmetrically arranged on both sides of the chassis 2. One end of the two electric telescopic rods 3 is fixedly connected with one side of the top of the base 1. The other end of the electric telescopic rod 3 is fixedly connected with the same rectangular plate 4. The bottom of the rectangular plate 4 is fixedly connected with an auxiliary block 5. The bottom of the auxiliary block 5 is fixedly connected with a pressure plate 6. One side of the auxiliary block 5 is provided with a wire body 7. One side of the base 1 is provided with a wire management device 8. The wire management device 8 includes two extension blocks 81. One side of the two extension blocks 81 is fixedly connected with one side of the base 1. The inner walls of the two extension blocks 81 are respectively connected with a threaded rod 82 and a round rod 83. One end of the round rod 83 is fixedly connected with the inner wall of the extension block 81. The outer surface of the threaded rod 82 is threadedly connected with a pressing plate 84. The inner wall of the pressing plate 84 is slidably connected with the outer surface of the round rod 83. The tops of the threaded rod 82 and the round rod 83 are fixedly connected with the same connecting plate 85. The other side of the top of the base 1 is fixedly connected with a display 10. One side of the display 10 is provided with a protection device 9. By setting the threaded rod 82 and the round rod 83, the long and redundant wire body 7 is wound around the outer surfaces of the threaded rod 82 and the round rod 83. Rotate the threaded rod 82, and the threaded rod 82 will drive the pressing plate 84 to move on the outer surfaces of the threaded rod 82 and the round rod 83 until the pressing plate 84 and the connecting plate 85 completely clamp the wound wire body 7, then the wire body 7 can be sorted and fixed, which is beneficial to preventing the wire body 7 from falling onto the pressure plate 6 and causing damage to the wire body 7, and facilitating the normal operation of the instrument.

[0030] Referring to Figure 2 and Figure 3As shown, rubber plates 86 are fixedly connected to the sides of the pressing plate 84 and the connecting plate 85 that are close to each other. Grooves are evenly formed on one side of the rubber plates 86. By providing the rubber plates 86 with grooves, the friction on one side of the clamping plate and the connecting plate 85 can be increased, making the clamping of the pressing plate 84 and the connecting plate 85 on the wire body 7 tighter. At the same time, it can play a certain protective role for the wire body 7; a bearing 87 is fixedly connected to the outer surface of the threaded rod 82, and the outer surface of the bearing 87 is fixedly connected to the inner wall of the extension block 81. By providing the bearing 87, the friction between the threaded rod 82 and the extension block 81 can be reduced when the threaded rod 82 is rotated, making it more labor-saving to rotate the threaded rod 82.

[0031] Refer to Figure 2 and Figure 3 As shown, one end of the threaded rod 82 passes through the inner wall of the extension block 81 and is fixedly connected with an operating block 88. Protrusions are provided on the outer surface of the operating block 88. By providing the operating block 88, rotating the operating block 88 can drive the threaded rod 82 to rotate. At the same time, the protrusions are provided on the outer surface of the operating block 88, which can effectively increase the friction on the outer surface of the operating block 88 and play an anti-slip role when rotating the operating block 88; a nut 89 is threadedly connected to the outer surface of the threaded rod 82, and the nut 89 is arranged between the pressing plate 84 and the extension block 81. By providing the nut 89, rotating the nut 89 so that one side of the nut 89 abuts against one side of the pressing plate 84 can limit the pressing plate 84, which is beneficial to preventing the limit of the pressing plate 84 on the wire body 7 from loosening.

[0032] Refer to Figure 4 and Figure 5 As shown, the protection device 9 includes a protection plate 91, and one side of the protection plate 91 is rotatably connected to one side of the display 10. By providing the protection plate 91, rotating the protection plate 91 so that one side of the protection plate 91 completely covers the display screen of the display 10 can cover and protect the display screen of the display 10, which is beneficial to preventing the display screen from being damaged due to direct external impact on the display screen.

[0033] Refer to Figure 4 and Figure 5As shown in the figure, a round hole block 92 is fixedly connected to one side of the protection plate 91, an installation block 93 is fixedly connected to one side of the display 10, a plug pin 94 is fixedly connected to one side of the installation block 93, and the size and shape of the outer surface of the plug pin 94 are adapted to the size and shape of the inner wall of the round hole block 92. By setting the plug pin 94 and inserting the plug pin 94 into the inner wall of the round hole block 92, the plug pin 94 can limit the round hole block 92 and the protection plate 91, which is beneficial to preventing the display 10 from detaching from the protection of the protection plate 91; one end of the plug pin 94 is fixedly connected to a clamping block 95, the cross section of the clamping block 95 is an isosceles trapezoid, and the clamping block 95 is made of rubber. By setting the clamping block 95, one end of the clamping block 95 is smaller, which is convenient for inserting the clamping block 95 into the inner wall of the round hole block 92. At the same time, the other end of the clamping block 95 is larger, which can limit the round hole block 92 and is beneficial to preventing the round hole block 92 from detaching from the limit of the plug pin 94.

[0034] Working principle: When it is necessary to organize the wire body 7, wind the redundant wire body 7 around the outer surfaces of the threaded rod 82 and the round rod 83. Rotate the operation block 88 to drive the threaded rod 82 to rotate. Under the limit of the round rod 83, the threaded rod 82 will drive the pressing plate 84 to move on the outer surfaces of the threaded rod 82 and the round rod 83 until the pressing plate 84 and the rubber plate 86 on one side of the connecting plate 85 completely clamp the wound wire body 7. Then rotate the nut 89 so that one side of the nut 89 abuts against one side of the pressing plate 84, which can limit the pressing plate 84 and is beneficial to preventing the limit of the pressing plate 84 on the wire body 7 from loosening. Thus, the wire body 7 can be organized and fixed, which is further beneficial to preventing the wire body 7 from falling onto the pressure plate 6 and causing damage to the wire body 7, facilitating the normal operation of the instrument; when it is necessary to protect the display screen of the display 10, rotate the protection plate 91 so that one side of the protection plate 91 completely covers the display screen of the display 10. The clamping block 95 and the plug pin 94 enter the inner wall of the round hole block 92, so that the protection plate 91 and the display 10 can be fixed. The protection plate 91 can cover and protect the display screen of the display 10, which is beneficial to preventing the display screen from being damaged due to direct external impact.

Claims

1. An apparatus for testing the strength of asphalt concrete, comprising a base (1), characterized in that: One side of the top of the base (1) is fixedly connected with a chassis (2). Electric telescopic rods (3) are symmetrically arranged on both sides of the chassis (2). One end of each of the two electric telescopic rods (3) is fixedly connected with one side of the top of the base (1), and the other end of the electric telescopic rod (3) is fixedly connected with the same rectangular plate (4). A auxiliary block (5) is fixedly connected to the bottom of the rectangular plate (4), and a pressing plate (6) is fixedly connected to the bottom of the auxiliary block (5). A wire body (7) is arranged on one side of the auxiliary block (5), and a wire management device (8) is arranged on one side of the base (1). The wire management device (8) includes two extension blocks (81). One side of each of the two extension blocks (81) is fixedly connected with one side of the base (1). A threaded rod (82) and a round rod (83) are respectively connected to the inner walls of the two extension blocks (81). One end of the round rod (83) is fixedly connected with the inner wall of the extension block (81). A pressing plate (84) is threadedly connected to the outer surface of the threaded rod (82), and the inner wall of the pressing plate (84) is slidably connected to the outer surface of the round rod (83). The tops of the threaded rod (82) and the round rod (83) are fixedly connected with the same connecting plate (85). On the other side of the top of the base (1), a display (10) is fixedly connected, and a protection device (9) is arranged on one side of the display (10).

2. The strength testing device for asphalt concrete according to claim 1, characterized in that: Rubber plates (86) are fixedly connected to the sides of the pressing plate (84) and the connecting plate (85) close to each other, and grooves are evenly formed on one side of the rubber plates (86).

3. The strength testing device for asphalt concrete according to claim 1, characterized in that: A bearing (87) is fixedly connected to the outer surface of the threaded rod (82), and the outer surface of the bearing (87) is fixedly connected with the inner wall of the extension block (81).

4. A strength testing device for asphalt concrete according to claim 1, characterized in that: One end of the threaded rod (82) passes through the inner wall of the extension block (81) and is fixedly connected with an operation block (88), and protrusions are arranged on the outer surface of the operation block (88).

5. The strength testing device for asphalt concrete according to claim 1, characterized in that: A nut (89) is threadedly connected to the outer surface of the threaded rod (82), and the nut (89) is arranged between the pressing plate (84) and the extension block (81).

6. The strength testing device for asphalt concrete according to claim 1, wherein: The protection device (9) includes a protection plate (91), and one side of the protection plate (91) is rotatably connected with one side of the display (10).

7. An apparatus for testing the strength of asphalt concrete according to claim 6, characterized in that: A round hole block (92) is fixedly connected to one side of the protection plate (91), a mounting block (93) is fixedly connected to one side of the display (10), and a plug pin (94) is fixedly connected to one side of the mounting block (93). The size and shape of the outer surface of the plug pin (94) are adapted to the size and shape of the inner wall of the round hole block (92).

8. An apparatus for testing the strength of asphalt concrete according to claim 7, characterized in that: One end of the plug pin (94) is fixedly connected with a clamping block (95). The cross section of the clamping block (95) is an isosceles trapezoid, and the clamping block (95) is made of rubber material.

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