Pneumatic pasting clamp for dynamic modulus test of asphalt mixture

Abstract

The utility model relates to the technical field of clamping devices, and particularly discloses an asphalt mixture dynamic modulus test pneumatic pasting clamp which comprises a hollow shell, an air inlet is formed in the bottom of the shell, and five notches are formed in the top of the shell around the circle center of the shell in a circumferential distribution mode. The air cylinder is connected with the bottom end in the shell and comprises a piston and a telescopic rod, the piston is arranged in the air cylinder, the telescopic rod is connected with the piston, and the air cylinder drives the telescopic rod to stretch out and draw back; the clamping mechanism comprises a plurality of same clamping rods, each clamping rod comprises a first rod piece and a second rod piece, the included angle between the first rod piece and the second rod piece is 100 degrees, and the first rod pieces are inserted into the notches; the springback mechanism comprises a connecting block and a spring, one end of the spring is connected with the connecting block, and the other end of the spring is connected with the first rod piece; the asphalt clamp overcomes the defects that in the prior art, an asphalt clamp does not have an automatic clamping force adjusting function, clamping is not stable, and manual clamping consumes time and labor.

Description

Technical Field

[0001] The utility model relates to the field of clamping devices, in particular to a pneumatic sticking fixture for dynamic modulus test of asphalt mixture. Background Art

[0002] In the fields of structural optimization of asphalt pavement, research on crack resistance and bonding performance, improvement of construction technology, etc., asphalt fixtures are used to clamp asphalt parts.

[0003] In the prior art, the asphalt fixture usually manually twists a clamping wrench to clamp the asphalt part, which can only achieve clamping with a fixed force, is prone to unstable clamping, and is time-consuming and laborious for manual operation. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The problem to be solved by the utility model is to provide a pneumatic sticking fixture for dynamic modulus test of asphalt mixture, so as to overcome the defects of the existing asphalt fixture, such as lack of automatic adjustment of clamping force, unstable clamping, and time-consuming and laborious manual clamping.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the utility model provides a pneumatic sticking fixture for dynamic modulus test of asphalt mixture, including:

[0008] A housing, which is hollow, has an air inlet at the bottom, and five notches are circumferentially distributed around the center of the housing at the top;

[0009] A cylinder, which is connected to the bottom end inside the housing, includes a piston and a telescopic rod. The piston is arranged inside the cylinder, the telescopic rod is connected to the piston, and the cylinder drives the telescopic rod to expand and contract;

[0010] A clamping mechanism, which includes a plurality of identical clamping rods. Each clamping rod includes a first rod and a second rod. One end of the first rod is connected to the telescopic rod, the other end of the first rod is connected to the second rod, the included angle between the first rod and the second rod is 100°, and the first rod is inserted into the notch;

[0011] A resilience mechanism, which includes a connecting block and a spring. The connecting block is pentagonal, one end of the spring is connected to the connecting block, and the other end of the spring is connected to the first rod.

[0012] The pneumatic pasting fixture as described above. Optionally, the pneumatic pasting fixture includes an air pump. One end of a pipeline is connected to the cylinder through the air inlet, and the other end of the pipeline is connected to the air pump.

[0013] The pneumatic pasting fixture as described above. Optionally, there are five clamping rods, and each clamping rod is distributed in a circumferential array around the center of the housing.

[0014] The pneumatic pasting fixture as described above. Optionally, there are five springs, and each spring is distributed in a circumferential array around the center of the housing. Each spring is correspondingly connected to each face of the pentagonal connecting block.

[0015] The pneumatic pasting fixture as described above. Optionally, the pneumatic pasting fixture includes a clamping assistance mechanism. There are five clamping assistance mechanisms, and each clamping assistance mechanism is correspondingly connected to each clamping rod.

[0016] The pneumatic pasting fixture as described above. Optionally, the clamping assistance mechanism includes a pin shaft, an auxiliary plate, and a rubber block. The auxiliary plate is hinged to one end of the second rod through the pin shaft. The rubber block is connected to the auxiliary plate, and the housing and the cylinder are coaxial.

[0017] (III) Beneficial effects

[0018] A pneumatic pasting fixture for dynamic modulus test of asphalt mixture provided by the present utility model has the following beneficial effects:

[0019] (1) In the present utility model, an air pump provides high-pressure gas for the cylinder. There is a piston and a telescopic rod in the cylinder. The piston moves upward or downward under the drive of the high-pressure gas. The telescopic rod is connected to the piston. Therefore, the telescopic rod extends or retracts upward or downward in the cylinder. The clamping mechanism is connected to the telescopic rod, and at the same time, the clamping mechanism is movably connected to the chute on the upper part of the housing. As the telescopic rod retracts downward, the clamping mechanism clamps the asphalt; as the telescopic rod lifts upward, the clamping mechanism relaxes the asphalt part. By this method, the clamping force on the asphalt part can be freely controlled.

[0020] (2) In the present utility model, a spring-back mechanism is arranged at the top end inside the housing. The connecting block of the spring-back mechanism is pentagonal. One end of the spring is connected to the pentagonal connecting block, and the other end of the spring is connected to the clamping rod. The spring-back mechanism provides a spring-back force for the relaxation of the clamping mechanism to ensure that the clamping mechanism can better relax the asphalt part.

[0021] (3) In this utility model, a clamping auxiliary mechanism is provided at one end of the second rod of the clamping mechanism. The clamping auxiliary mechanism is hinged to the second rod. Therefore, the clamping auxiliary mechanism can rotate. The auxiliary plate of the clamping auxiliary mechanism can increase the contact area between the clamping mechanism and the asphalt part, improving the clamping stability. At the same time, the rubber block has a high friction force, which can ensure that the asphalt part does not fall off during the clamping process, improving the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a perspective view of a pneumatic sticking fixture for dynamic modulus test of asphalt mixture of this utility model;

[0024] Figure 2 is a perspective sectional view of a pneumatic sticking fixture for dynamic modulus test of asphalt mixture of this utility model;

[0025] Figure 3 is a sectional view of a pneumatic sticking fixture for dynamic modulus test of asphalt mixture of this utility model.

[0026] The corresponding component names for the reference numerals in the drawings are: 1, housing; 11, air inlet; 12, notch; 2, cylinder; 21, piston; 22, telescopic rod; 3, clamping mechanism; 31, clamping rod; 32, first rod; 33, second rod; 4, resilience mechanism; 41, connecting block; 42, spring; 5, air pump; 51, pipeline; 6, clamping auxiliary mechanism; 61, pin shaft; 62, auxiliary plate; 63, rubber block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will describe this application in detail in combination with the drawings and specific embodiments.

[0028] The following describes the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope protected by the present application.

[0029] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or this method can be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0030] It should also be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application. The drawings only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0031] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0032] The following describes the technical solutions provided by each embodiment of the present application in conjunction with the accompanying drawings.

[0033] Referring to Figures 1 to 3 , the present utility model provides a pneumatic sticking fixture for asphalt mixture dynamic modulus test, including a housing 1, a cylinder 2, a clamping mechanism 3, and a resilience mechanism 4. The interior of the housing 1 is hollow. The cylinder 2 is connected to the bottom end inside the housing 1. The clamping mechanism 3 is connected to the telescopic rod 22 of the cylinder 2. The telescopic rod 22 drives the clamping mechanism 3 to tighten or loosen. The resilience mechanism 4 is connected to the telescopic rod 22 and is used to make the relaxation and resilience of the telescopic rod 22 have a better effect.

[0034] In Figures 1 to 3 In an alternative embodiment, the housing 1 is hollow, an air inlet 11 is provided at the bottom of the housing 1, and five notches 12 are provided at the top of the housing 1 and distributed circumferentially around the center of the housing 1.

[0035] Furthermore, the cylinder 2 is connected to the bottom end inside the housing 1. The cylinder 2 includes a piston 21 and a telescopic rod 22. The piston 21 is disposed inside the cylinder 2, the telescopic rod 22 is connected to the piston 21, and the cylinder 2 drives the telescopic rod 22 to expand and contract.

[0036] Meanwhile, the pneumatic clamping fixture includes an air pump 5. One end of a pipeline 51 is connected to the cylinder 2 through the air inlet 11, and the other end of the pipeline 51 is connected to the air pump 5. The air pump 5 can supply high-pressure gas to the cylinder 2 through the pipeline 51, so as to drive the telescopic rod 22 to expand and contract inside the cylinder 2.

[0037] In Figures 1 to 3 In an alternative embodiment, the clamping mechanism 3 includes a plurality of identical clamping rods 31. The clamping rod 31 includes a first rod 32 and a second rod 33. One end of the first rod 32 is connected to the telescopic rod 22, the other end of the first rod 32 is connected to the second rod 33, the included angle between the first rod 32 and the second rod 33 is 100°, and the first rod 32 is inserted into the notch 12.

[0038] Furthermore, there are five clamping rods 31, and each clamping rod 31 is distributed in a circumferential array around the center of the housing 1.

[0039] Furthermore, the first rod 32 can move inside the notch 12. When the telescopic rod 22 retracts downward, the clamping mechanism 3 is driven by the telescopic rod 22 to achieve clamping. When the telescopic rod 22 lifts upward, the clamping mechanism 3 is driven by the telescopic rod 22 to achieve relaxation.

[0040] In Figures 1 to 3 In an alternative embodiment, the spring-back mechanism 4 includes a connecting block 41 and a spring 42. The connecting block 41 is pentagonal, one end of the spring 42 is connected to the connecting block 41, and the other end of the spring 42 is connected to the first rod 32.

[0041] Furthermore, there are five springs 42, and each spring 42 is distributed in a circumferential array around the center of the housing 1. Each spring 42 is correspondingly connected to each face of the pentagonal connecting block 41.

[0042] It should be noted that the spring-back mechanism 4 can provide a reverse acting force for the clamping mechanism 3 to ensure that the clamping mechanism 3 can better spring back.

[0043] In Figures 1 to 3In an alternative embodiment, the pneumatic sticking fixture includes five clamping auxiliary mechanisms 6, each of which is correspondingly connected to each clamping rod 31.

[0044] Further, the clamping auxiliary mechanism 6 includes a pin shaft 61, an auxiliary plate 62 and a rubber block 63. The auxiliary plate 62 is hinged to one end of the second rod 33 through the pin shaft 61. The rubber block 63 is connected to the auxiliary plate 62. The housing 1 and the air cylinder 2 are coaxial.

[0045] It should be noted that the clamping auxiliary mechanism 6 can provide a better clamping effect when clamping asphalt parts.

[0046] The specific steps of a pneumatic sticking fixture for the dynamic modulus test of asphalt mixture of the present utility model are as follows:

[0047] The air pump 5 provides high-pressure gas for the air cylinder 2. The air cylinder 2 is provided with a piston 21 and a telescopic rod 22. The piston 21 moves upward or downward under the drive of the high-pressure gas. The telescopic rod 22 is connected to the piston 21. Therefore, the telescopic rod 22 extends or retracts upward or downward in the air cylinder 2. The clamping mechanism 3 is connected to the telescopic rod 22. At the same time, the clamping mechanism 3 is movably connected to the chute on the upper part of the housing 1. As the telescopic rod 22 retracts downward, the clamping mechanism 3 clamps the asphalt; as the telescopic rod 22 lifts upward, the clamping mechanism relaxes the asphalt part.

[0048] By providing a spring-back mechanism 4 at the top end inside the housing 1, the connecting block 41 of the spring-back mechanism 4 is pentagonal. One end of the spring 42 is connected to the pentagonal connecting block 41, and the other end of the spring 42 is connected to the clamping rod 31. The spring-back mechanism 4 provides a spring-back force for the relaxation of the clamping mechanism 3 to ensure that the clamping mechanism 3 can better relax the asphalt part.

[0049] By providing a clamping auxiliary mechanism 6 at one end of the second rod 33 of the clamping mechanism 3, the clamping auxiliary mechanism 6 is hinged to the second rod 33. Therefore, the clamping auxiliary mechanism 6 can rotate. The auxiliary plate 62 of the clamping auxiliary mechanism 6 can increase the contact area between the clamping mechanism 3 and the asphalt part and improve the clamping stability; at the same time, the rubber block 63 has a high friction force, which can ensure that the asphalt part does not fall off during the clamping process and improve the clamping stability.

[0050] For the same or similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0051] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pneumatic sticking fixture for dynamic modulus test of asphalt mixture, characterized in that Comprising: A housing (1), the housing (1) being hollow, an air inlet (11) being provided at the bottom of the housing (1), and five notches (12) being provided at the top of the housing (1) and distributed circumferentially around the center of the housing (1); A cylinder (2), the cylinder (2) being connected to the bottom end inside the housing (1), the cylinder (2) including a piston (21) and a telescopic rod (22), the piston (21) being arranged inside the cylinder (2), the telescopic rod (22) being connected to the piston (21), and the cylinder (2) driving the telescopic rod (22) to expand and contract; A clamping mechanism (3), the clamping mechanism (3) including a plurality of identical clamping rods (31), the clamping rod (31) including a first rod (32) and a second rod (33), one end of the first rod (32) being connected to the telescopic rod (22), the other end of the first rod (32) being connected to the second rod (33), the included angle between the first rod (32) and the second rod (33) being 100°, and the first rod (32) being inserted into the notch (12); A return spring mechanism (4), the return spring mechanism (4) including a connecting block (41) and a spring (42), the connecting block (41) being pentagonal, one end of the spring (42) being connected to the connecting block (41), and the other end of the spring (42) being connected to the first rod (32).

2. The pneumatic pasting fixture according to claim 1, wherein The pneumatic pasting fixture includes an air pump (5), one end of a pipeline (51) being connected to the cylinder (2) through the air inlet (11), and the other end of the pipeline (51) being connected to the air pump (5).

3. The pneumatic pasting fixture according to claim 1, wherein, There are five clamping rods (31), and each clamping rod (31) is distributed in a circumferential array around the center of the housing (1).

4. The pneumatic pasting fixture according to claim 1, characterized in that There are five springs (42), and each spring (42) is distributed in a circumferential array around the center of the housing (1), and each spring (42) is correspondingly connected to each face of the pentagonal connecting block (41).

5. The pneumatic pasting fixture according to claim 1, characterized in that, The pneumatic pasting fixture includes a clamping assistance mechanism (6), there are five clamping assistance mechanisms (6), and each clamping assistance mechanism (6) is correspondingly connected to each clamping rod (31).

6. The pneumatic pasting fixture according to claim 5, wherein, The clamping assistance mechanism (6) includes a pin shaft (61), an auxiliary plate (62) and a rubber block (63), the auxiliary plate (62) being hinged to one end of the second rod (33) through the pin shaft (61), the rubber block (63) being connected to the auxiliary plate (62), and the housing (1) and the cylinder (2) being coaxial.

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