Fixing device and cutting equipment

Abstract

The invention belongs to the technical field of road tests, and particularly relates to a fixing device and cutting equipment, the fixing device comprises a supporting platform, the supporting platform comprises a platform body, and a first baffle, a second baffle and a limiting piece which are arranged on the platform body, the first baffle extends in a first direction, the second baffle extends in a second direction, and the limiting piece is arranged on the platform body; the first direction intersects with the second direction, the platform body, the first baffle and the second baffle form a containing space for containing a test piece, and the limiting piece is used for abutting against the side, in the first direction, of the test piece; the adjusting assembly is arranged on the side, in the first direction, of the supporting platform and connected with the second baffle, and the adjusting assembly is used for adjusting the position of the test piece on the platform body and abuts against the other side, in the first direction, of the test piece; and the pressing assembly is arranged opposite to the first baffle and is used for pressing the test piece to the platform body. The test piece can be rapidly fixed, batch cutting of the test piece is achieved, and follow-up road tests can be efficiently carried out conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of road test, and more specifically, to a fixing device and a cutting device. Background Art

[0002] In the related art, there are problems of inconvenient operation and insecure fixation when fixing specimens with an asphalt mixture cutting machine. Since only the bottom surface of the specimen contacts the fixing device, it is easy for the specimen to warp or shift in position, resulting in changes in the cutting position and non-compliance of the specimen size. It is necessary to perform secondary and tertiary cutting, or even remold the specimen, wasting a lot of time, delaying the test results, and affecting the on-site construction quality control and construction progress. Summary of the Invention

[0003] The purpose of the present application is to provide a fixing device and a cutting device, which can quickly fix specimens, realize batch cutting of specimens, and facilitate the efficient development of subsequent road tests.

[0004] In a first aspect, an embodiment of the present application provides a fixing device, including: a support platform, including a platform body and a first baffle, a second baffle, and a limiting member provided on the platform body. The first baffle extends along a first direction, the second baffle extends along a second direction, the first direction intersects the second direction, the platform body, the first baffle, and the second baffle form a receiving space for placing the specimen, and the limiting member is used to abut against one side of the specimen along the first direction; an adjusting assembly, provided on one side of the support platform along the first direction and connected to the second baffle, the adjusting assembly is used to adjust the position of the specimen on the platform body and abut against the other side of the specimen along the first direction; and a pressing assembly, disposed opposite to the first baffle, the pressing assembly is used to press the specimen against the platform body.

[0005] According to the fixing device provided by the embodiment of the present application, the support platform includes a platform body and a first baffle, a second baffle, and a limiting member provided on the platform body. The limiting member is used to abut against one side of the specimen along the first direction, the adjusting assembly is used to adjust the position of the specimen on the platform body and abut against the other side of the specimen along the first direction, and the specimen is pressed against the platform body by the pressing assembly, so that the specimen can be quickly fixed to the support platform along the first direction and the second direction, realizing batch cutting of specimens and facilitating the efficient development of subsequent road tests.

[0006] In addition, according to the fixing device of the present application, the following additional technical features may also be provided:

[0007] In some embodiments of the present application, a support frame is further provided on the platform body. The support frame includes a beam member that is suspended and extends along the second direction. The pressing assembly includes a sliding assembly and a moving assembly. The sliding assembly is provided on the beam member, and the moving assembly is slidably connected to the sliding assembly to approach or move away from the specimen.

[0008] In some embodiments of the present application, the sliding assembly includes a guide rail and a slider. The guide rail is disposed on the beam member, and the slider is slidably connected to the guide rail. The moving assembly includes a rod and a pressing member. The first end of the rod is connected to the slider, and the second end of the rod is elastically connected to the pressing member. The pressing member is used to contact the specimen.

[0009] In some embodiments of the present application, the moving assembly further includes a rotating shaft and a throttle valve. The rotating shaft passes through the slider, and the first end of the rod passes through the rotating shaft. The throttle valve is used to press the first end against the rotating shaft.

[0010] In some embodiments of the present application, the pressing member includes a fixing portion, an extending portion, and a pressing portion. The rod passes through the fixing portion and is elastically connected to the fixing portion. The extending portion extends in a direction parallel to the rod, and the pressing portion is connected to the end of the extending portion away from the fixing portion.

[0011] In some embodiments of the present application, the pressing portion includes a contact surface that contacts the specimen, and the shape of the contact surface is a plane or a curved surface.

[0012] In some embodiments of the present application, the moving assembly further includes a nut, a first elastic member, and a second elastic member. The nut is threadedly connected to the rod. The first elastic member is sleeved on the outer periphery of the rod and is located between the nut and the fixing portion. The second elastic member is sleeved on the outer periphery of the rod and is located between the fixing portion and the support platform. The elastic force of the first elastic member is greater than the elastic force of the second elastic member.

[0013] In some embodiments of the present application, the number of moving assemblies is two, and the two moving assemblies are disposed on both sides of the sliding assembly.

[0014] In some embodiments of the present application, the adjusting assembly includes a tightening portion and an adjusting rod connected to each other. The tightening portion passes through the second baffle and is threadedly connected to the second baffle. The end of the adjusting rod away from the tightening portion abuts against the specimen.

[0015] In a second aspect, an embodiment of the present application further provides a cutting device, including: a base having a receiving cavity; the fixing device of the embodiment of the present application disposed in the receiving cavity; a fixing frame suspended above the receiving cavity; and a cutter disposed on the fixing frame. The cutter includes a saw blade located in the receiving cavity for cutting the specimen.

[0016] In some embodiments of the present application, connection seats are respectively disposed between the two sides of the support platform of the fixing device and the wall of the receiving cavity; the cutting device further includes an adjusting handwheel connected to the support platform to drive the support platform to move between the two connection seats.

[0017] The above description is only an overview of the technical solution of this application. In order to understand the technical means of this application more clearly, it can be implemented in accordance with the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specific embodiments of this application are specifically exemplified. Description of the Drawings

[0018] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0019] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0020] Figure 1 is a schematic three-dimensional structure diagram of the fixing device according to an embodiment of this application;

[0021] Figure 2 is Figure 1 a schematic top view structure diagram of the fixing device shown;

[0022] Figure 3 is Figure 1 a schematic structure diagram of the pressing assembly in the fixing device shown;

[0023] Figure 4 is a schematic structure diagram of the cutting device according to an embodiment of this application.

[0024] The reference numerals in the drawings are represented as follows:

[0025] 1000, cutting device;

[0026] 100, fixing device; X, first direction; Y, second direction; S, test piece;

[0027] 1, support platform; 10, platform body; 11, first baffle; 12, second baffle; 13, limiting member; 14, support frame; 141, beam member; 15, connecting seat; 16, adjusting handwheel;

[0028] 2, adjusting assembly; 21, tightening part; 22, adjusting rod;

[0029] 3. Pressing assembly; 32. Sliding assembly; 321. Guide rail; 322. Slide block; 33. Moving assembly; 331. Rod; 332. Pressing member; 3321. Fixed part; 3322. Extension part; 3323. Pressing part; C. Contact surface; 333. Rotating shaft; 334. Gate valve; 335. Nut; 336. First elastic member; 337. Second elastic member;

[0030] 200. Base; 201. Accommodating cavity; 300. Tool; 310. Saw blade; 400. Fixed bracket. Detailed implementation manners

[0031] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0032] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0033] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0034] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are accordingly interpreted.

[0035] References to "an embodiment" in this document mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0037] Figure 1 It is a schematic three-dimensional structure diagram of the fixing device for the embodiments of the present application.

[0038] Refer to Figure 1 , the embodiments of the present application provide a fixing device 100, including a support platform 1, an adjustment assembly 2, and a pressing assembly 3.

[0039] The support platform 1 includes a platform body 10, a first baffle 11, a second baffle 12, and a limiting member 13 provided on the platform body 10. The first baffle 11 extends along a first direction X, the second baffle 12 extends along a second direction Y, the first direction X intersects with the second direction Y, and the platform body 10, the first baffle 11, and the second baffle 12 form an accommodation space for placing a test piece S. The limiting member 13 is used to abut against one side of the test piece S along the first direction X.

[0040] The adjustment component 2 is disposed on one side of the support platform 1 along the first direction X and connected to the second baffle 12 . The adjustment component 2 is used to adjust the position of the specimen S on the platform body 10 and abuts against the other side of the specimen S along the first direction X.

[0041] The pressing assembly 3 is arranged opposite to the first baffle 11 , and the pressing assembly 3 is used to press the test piece S onto the platform body 10 .

[0042] In this embodiment, the stopper 13 may be a screw, and a threaded hole is provided on the platform body 10. The stopper 13 is threadedly connected to the threaded hole, and the nut of the stopper 13 contacts one side of the specimen S to limit the movement of the specimen S along the first direction X. Optionally, there are multiple stoppers 13, and the multiple stoppers 13 are spaced and distributed in multiple rows and columns on the platform body 10. For example, the distance between two adjacent stoppers 13 along the first direction X is 30 mm, and the distance between two adjacent stoppers 13 along the second direction Y is 100 mm. The diameter of the nut of the stopper 13 may be 15 mm, 20 mm, 25 mm, etc., and the stoppers 13 with different nut diameters may be screwed to the threaded hole of the platform body 10. According to the size of the specimen S, the stopper 13 with a threaded hole at a suitable position and a suitable nut diameter may be selected for operation.

[0043] Since the shape of the specimen S can be a plate, a cylinder, etc., the limiter 13 can abut against one side of the specimen S along the first direction X, and the adjustment assembly 2 can adjust the position of the specimen S on the platform body 10 and abut against the other side of the specimen S along the first direction X, thereby limiting the movement of the specimen S along the first direction X. The pressing assembly 3 is arranged opposite to the first baffle 11, and the pressing assembly 3 is used to press the specimen S to the platform body 10 to limit the movement of the specimen S along the second direction Y and the tilting along the vertical direction.

[0044] The fixing device 100 is used in the cutting equipment for road tests. The material of the test piece S can be asphalt mixture. The test piece S is adjusted and fixed along the first direction X and the second direction Y of the supporting platform 1, which can prevent the test piece S from tilting or shifting, and ensure the accuracy of the cutting position of the test piece S during the cutting process, so as to obtain a test piece segment that meets the size without multiple cutting, saving time, and meeting the requirements of on-site construction quality control and construction progress.

[0045] According to the fixing device 100 provided by the embodiments of the present application, the support platform 1 includes a platform body 10, a first baffle 11, a second baffle 12, and a limiting member 13 provided on the platform body 10. The limiting member 13 is used to abut against one side of the test piece S along the first direction X. The adjusting assembly 2 is used to adjust the position of the test piece S on the platform body 10 and abut against the other side of the test piece S along the first direction X. The test piece S is pressed against the platform body 10 by the pressing assembly 3, so that the test piece S can be quickly fixed to the support platform 1 along the first direction X and the second direction Y, realizing batch cutting of the test piece S and facilitating efficient subsequent road tests.

[0046] In some embodiments, a support frame 14 is further provided on the platform body 10. The support frame 14 includes a beam member 141 that is suspended and extends along the second direction Y. The pressing assembly 3 includes a sliding assembly 32 and a moving assembly 33. The sliding assembly 32 is provided on the beam member 141, and the moving assembly 33 is slidably connected to the sliding assembly 32 to approach or move away from the test piece S.

[0047] As Figure 1 shown, the support frame 14 includes two support rods 142 connected to the platform body 10 and a beam member 141 connected between the two support rods 142. The support rods 142 have a certain height, so that the beam member 141 is suspended on the platform body 10. The beam member 141 extends along the second direction Y. The sliding assembly 32 of the pressing assembly 3 is provided on the beam member 141, and the moving assembly 33 is slidably connected to the sliding assembly 32. When the test piece S needs to be cut, the moving assembly 33 moves along the second direction Y and approaches the test piece S. After cutting is completed, the moving assembly 33 moves in the reverse direction along the second direction Y and moves away from the test piece S.

[0048] Figure 2 For Figure 1 the top view structural schematic diagram of the fixing device shown, Figure 3 For Figure 1 the structural schematic diagram of the pressing assembly in the fixing device shown.

[0049] In some embodiments, the sliding assembly 32 includes a guide rail 321 and a slider 322. The guide rail 321 is provided on the beam member 141, and the slider 322 is slidably connected to the guide rail 321. The moving assembly 33 includes a rod member 331 and a pressing member 332. The first end of the rod member 331 is connected to the slider 322, and the second end of the rod member 331 is elastically connected to the pressing member 332. The pressing member 332 is used to contact the test piece S.

[0050] As Figure 2 and Figure 3As shown, the sliding component 32 includes a guide rail 321 and a slider 322. The rod 331 is a cylindrical smooth rod. Its first end is connected to the slider 322, and its second end is elastically connected to the pressing member 332, which can buffer the acting force when the pressing member 332 contacts the specimen S and prevent the specimen S surface from being scratched due to excessive acting force.

[0051] In some embodiments, the moving component 33 further includes a rotating shaft 333 and a gate valve 334. The rotating shaft 333 passes through the slider 322, and the first end of the rod 331 passes through the rotating shaft 333. The gate valve 334 is used to press the first end against the rotating shaft 333.

[0052] As Figure 3 shown, the protruding end of the gate valve 334 has an external thread. A through hole is provided at the first end of the rod 331, and a threaded hole is provided on the rotating shaft 333. The protruding end of the gate valve 334 passes through the through hole and is threadedly connected to the threaded hole, and the rotating shaft 333 passes through the slider 322, so that the rod 331 can be connected to the slider 322 through the rotating shaft 333, and further the height and angle of the rod 331 relative to the platform body 10 can be adjusted.

[0053] In some embodiments, the pressing member 332 includes a fixing portion 3321, an extending portion 3322, and a pressing portion 3323. The rod 331 passes through the fixing portion 3321 and is elastically connected to the fixing portion 3321. The extending portion 3322 extends in a direction parallel to the rod 331, and the pressing portion 3323 is connected to the end of the extending portion 3322 away from the fixing portion 3321.

[0054] As Figure 2 and Figure 3 shown, the fixing portion 3321, the extending portion 3322, and the pressing portion 3323 of the pressing member 332 can be an integrally formed structure, and the extending portion 3322 and the pressing portion 3323 can also rotate relative to the fixing portion 3321. In this way, when there is an angle between the extending portion 3322 and the specimen S, it is not necessary to adjust the entire pressing member 332, and only the rotation angle of the pressing portion 3323 needs to be adjusted to contact the specimen S.

[0055] In some embodiments, the pressing portion 3323 includes a contact surface C that contacts the specimen S. The shape of the contact surface C is a plane or a curved surface. As Figure 3 shown, the contact surface C of the pressing member 332 can be a curved surface or a plane, and can be replaced according to the shape of the specimen S. For example, when the specimen S is a cylinder, the contact surface C can be an arc-shaped curved surface; when the specimen S is a cube, the contact surface C can be a plane or two mutually perpendicular planes.

[0056] In some embodiments, the moving assembly 33 further includes a nut 335, a first elastic member 336, and a second elastic member 337. The nut 335 is threadedly connected to the rod member 331. The first elastic member 336 is sleeved on the outer periphery of the rod member 331 and is located between the nut 335 and the fixing portion 3321. The second elastic member 337 is sleeved on the outer periphery of the rod member 331 and is located between the fixing portion 3321 and the support platform 1. The elastic force of the first elastic member 336 is greater than the elastic force of the second elastic member 337.

[0057] As Figure 2 and Figure 3 shown, the first elastic member 336 and the second elastic member 337 are respectively arranged at the two axial ends of the fixing portion 3321 of the pressing member 332, and the elastic force of the first elastic member 336 is greater than the elastic force of the second elastic member 337. By rotating the nut 335, the first elastic member 336 and the second elastic member 337 can be pushed to extrude the pressing member 332, so that the pressing member 332 is elastically pressed against the test piece S.

[0058] In some embodiments, the number of the moving assemblies 33 is two, and the two moving assemblies 33 are arranged on both sides of the sliding assembly 32.

[0059] As Figure 1 shown, the two moving assemblies 33 are arranged on both sides of the sliding assembly 32, and are respectively pressed against the test piece S through two spaced pressing members 332 to prevent the test piece S from warping or flipping.

[0060] In some embodiments, the adjusting assembly 2 includes a tightening portion 21 and an adjusting rod 22 connected to each other. The tightening portion 21 passes through the second baffle 12 and is threadedly connected to the second baffle 12. One end of the adjusting rod 22 away from the tightening portion 21 abuts against the test piece S.

[0061] As Figure 1 shown, one end of the tightening portion 21 is a screw with a larger nut, which is convenient for tightening the adjusting assembly 2. The other end of the tightening portion 21 is a threaded shaft, and the threaded shaft has a hollow cylindrical portion. The cylindrical portion is used to accommodate the adjusting rod 22, and the cylindrical portion is in interference connection with the adjusting rod 22. The length of the adjusting rod 22 can be various, such as 20 mm, 25 mm, 30 mm, and 60 mm. The adjusting rod 22 with a suitable length can be replaced according to the size of the test piece S and the cutting operation, making the cutting operation more convenient.

[0062] In addition, a plurality of threaded holes can be provided on the second baffle 12. One or more adjusting rods 22 can be screwed in according to the area size of the contact surface between the test piece S and the adjusting rod 22, so that the cutting surface of the test piece S is parallel to the cutting saw blade, facilitating the rapid cutting of the test piece S. A plurality of adjusting rods 22 can also be provided on the second baffle 12 at the same time, so as to fix a plurality of test pieces S at the same time and cut a plurality of test pieces S without replacing the adjusting assembly 2.

[0063] Figure 4 It is a schematic structural diagram of the cutting device according to the embodiment of the present application.

[0064] As Figure 4 shown, the cutting device 1000 according to the embodiment of the present application includes the fixing device 100, the base 200, the cutting tool 300 and the fixing bracket 400 according to the embodiment of the present application.

[0065] The base 200 has a receiving cavity 201. The fixing device 100 is arranged in the receiving cavity 201. The fixing bracket 400 is suspended above the receiving cavity 201. The cutting tool 300 is arranged on the fixing bracket 400. The cutting tool 300 includes a saw blade 310. The saw blade 310 is located in the receiving cavity 201 and is used for cutting the test piece S.

[0066] Specifically, the saw blade 310 extends along the second direction Y and is located between the test piece S above the fixing device 100 and the second baffle 12, which is convenient for aligning the cutting position of the test piece S for cutting. In order to ensure that the cutting position of the test piece S is parallel to the saw blade 310 of the cutting tool 300, two or more threaded holes located on the same straight line can be selected on the platform body 10 to insert the limiting members 13 at the same time, so that they are parallel to the saw blade 310 and perpendicular to the first baffle 11, thereby forming the control in two mutually perpendicular directions and ensuring the accuracy of the cutting position.

[0067] In some embodiments, connection seats 15 are respectively arranged between the two sides of the support platform 1 of the fixing device 100 and the wall of the receiving cavity 201; the cutting device 1000 further includes an adjusting handwheel 16, and the adjusting handwheel 16 is connected to the support platform 1 to drive the support platform 1 to move between the two connection seats 15.

[0068] As Figure 1 shown, when it is not easy to accurately adjust the cutting position of the test piece S by both the adjusting assembly 2 and the limiting members 13 on the platform body 10, the support platform 1 can be adjusted to move between the two connection seats 15 by the adjusting handwheel 16 so that the test piece S can be adjusted to a suitable cutting position. Optionally, the moving distance range of the support platform 1 between the two connection seats 15 is 0-20 mm.

[0069] The fixing device and the cutting device provided by the embodiment of the present application have a simple structure and do not require adding other facilities and devices. They can cut asphalt mixture test pieces S with appropriate sizes according to test requirements. The sizes of the test pieces S have no errors, and the operation is extremely simple. The batch and rapid cutting of the test pieces S can be realized, avoiding the problems of complex test piece fixing, insecure fixing and difficult size control existing in ordinary cutting machines, greatly improving the cutting efficiency, enabling the subsequent road tests to be carried out quickly, reducing the time delay caused by cutting, improving the test efficiency, and providing rapid and accurate data support for the subsequent construction of the mixture.

[0070] As described above, it is only the preferred 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 fixing device, characterized in that: include: A support platform, comprising a platform body and a first baffle, a second baffle and a stopper arranged on the platform body, wherein the first baffle extends along a first direction, the second baffle extends along a second direction, the first direction intersects with the second direction, the platform body, the first baffle and the second baffle form a containing space for placing a specimen, and the stopper is used to abut against one side of the specimen along the first direction; an adjusting assembly, disposed on one side of the supporting platform along the first direction and connected to the second baffle, the adjusting assembly being used to adjust the position of the specimen on the platform body and abutting against the other side of the specimen along the first direction; and A clamping assembly is arranged opposite to the first baffle, and is used to press the test piece onto the platform body.

2. The fixing device according to claim 1, characterized in that: A support frame is also provided on the platform body, and the support frame includes a beam component which is suspended and extends along the second direction. The clamping assembly includes a sliding assembly and a moving assembly. The sliding assembly is provided on the beam component, and the moving assembly is slidably connected to the sliding assembly to approach or move away from the specimen.

3. The fixing device according to claim 2, characterized in that: The sliding assembly includes a guide rail and a slider, the guide rail is arranged on the beam component, the slider is slidably connected to the guide rail, the moving assembly includes a rod and a clamping member, the first end of the rod is connected to the slider, the second end of the rod is elastically connected to the clamping member, and the clamping member is used to contact the specimen.

4. The fixing device according to claim 3, characterized in that: The moving assembly further includes a rotating shaft and a gate valve. The sliding block is passed through the rotating shaft, the first end of the rod is passed through the rotating shaft, and the gate valve is used to press the first end to the rotating shaft.

5. The fixing device according to claim 3, characterized in that: The clamping member includes a fixed portion, an elongated portion and a clamping portion, the rod passes through the fixed portion and is elastically connected to the fixed portion, the elongated portion extends in a direction parallel to the rod, and the clamping portion is connected to one end of the elongated portion away from the fixed portion.

6. The fixing device according to claim 5, characterized in that: The pressing portion includes a contact surface that contacts the test piece, and the contact surface is in a flat surface or a curved surface.

7. The fixing device according to claim 5, characterized in that: The moving assembly also includes a nut, a first elastic member and a second elastic member. The nut is threadedly connected to the rod. The first elastic member is sleeved on the outer circumference of the rod and is located between the nut and the fixed portion. The second elastic member is sleeved on the outer circumference of the rod and is located between the fixed portion and the support platform. The elastic force of the first elastic member is greater than the elastic force of the second elastic member.

8. The fixing device according to any one of claims 2 to 7, characterized in that: The number of the moving components is two, and the two moving components are arranged on both sides of the sliding component.

9. The fixing device according to any one of claims 1 to 7, characterized in that: The adjustment assembly includes a connected tightening portion and an adjustment rod, the tightening portion passes through the second baffle and is threadedly connected to the second baffle, and one end of the adjustment rod away from the tightening portion abuts against the test piece.

10. A cutting device, characterized in that: include: A base having a receiving cavity; The fixing device according to any one of claims 1 to 9, arranged in the accommodating cavity; A fixing frame is suspended above the accommodating cavity; as well as A tool is arranged on the fixing frame, and the tool comprises a saw blade, and the saw blade is located in the accommodating cavity and is used for cutting the test piece.

11. The cutting device according to claim 10, characterized in that Connecting seats are also provided between the two sides of the supporting platform of the fixing device and the wall of the accommodating cavity respectively; The cutting device also includes an adjusting hand wheel, which is connected to the supporting platform to drive the supporting platform to move between the two connecting seats.

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