Asphalt film forming device for pull-out test

Abstract

The utility model provides an asphalt film forming device for a pull-out test. The asphalt film forming device comprises a machine body, a pressing assembly, a placing assembly and a lifting limiting assembly, the placing assembly and the lifting limiting assembly are arranged on the upper side of the machine body; the pressing assembly is arranged above the placing assembly; the lifting limiting assembly is arranged on the side edge of the containing assembly, and part of the lifting limiting assembly extends to the position below the pressing assembly. In the using process, by adjusting the height of the lifting limiting assembly, the pressing assembly is limited in the process that the pressing assembly presses an asphalt material on the containing assembly, so that the pressing assembly, the containing assembly and the lifting limiting assembly are matched, and an asphalt film with the required thickness is pressed; the technical problems that according to an existing asphalt film preparation method, the thickness of the asphalt film cannot be flexibly and accurately adjusted according to actual requirements, and diversified pull-out test requirements cannot be met are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bitumen test technical field, concretely relates to a bitumen membrane forming device for pull-out test. BACKGROUND

[0002] During the service of asphalt pavement, it is affected by complex environmental factors such as rain erosion, repeated traffic load and the like, the adhesion strength of asphalt-aggregate interface phase sharply decreases, and a series of structural diseases such as cracks, ruts and pits are generated. The interfacial adhesion performance between asphalt and aggregate is crucial to the overall durability of asphalt mixture. Therefore, the determination of the adhesion strength of asphalt-aggregate interface phase is of great significance for predicting the service life and disease resistance of asphalt pavement. The related technical personnel usually analyze and evaluate the adhesion strength of asphalt-aggregate interface under specific conditions through pull-out test. However, the pull-out test results are often significantly affected by the thickness of bitumen membrane, which not only affects the accuracy of adhesion strength test results, but also affects the damage pattern of the adhesion interface.

[0003] At present, most of the preparation methods of bitumen membrane are difficult to flexibly and accurately control the thickness of bitumen membrane according to the actual needs in the actual preparation process of bitumen membrane due to the characteristics of high viscosity and large temperature influence on flowability of bitumen, which cannot meet the diversified pull-out test requirements. Therefore, in view of the technical problem, an accurate and adjustable forming device for bitumen membrane thickness is needed to meet the diversified pull-out test requirements. UTILITY MODEL CONTENTS

[0004] In order to solve the technical problem that the thickness of the existing bitumen membrane preparation method in the background art cannot be flexibly and accurately adjusted according to the actual needs, and cannot meet the diversified pull-out test requirements, the utility model provides a bitumen membrane forming device for pull-out test.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A bitumen membrane forming device for pull-out test, the bitumen membrane forming device for pull-out test comprises a machine body, a pressing assembly, a placing assembly and a lifting limiting assembly; the placing assembly and the lifting limiting assembly are arranged on the upper side of the machine body; the pressing assembly is arranged above the placing assembly; the lifting limiting assembly is arranged at the side of the placing assembly and partially extends below the pressing assembly.

[0007] Optionally, the lifting limiting assembly comprises a lifting adjusting member, a limiting member and a shell; the shell has a cavity, the lifting adjusting member and the limiting member are arranged in the cavity; a movable slot is formed on one side of the shell close to the placing assembly, the limiting member extends out of the movable slot and partially extends below the pressing assembly; the lifting adjusting member is connected with the limiting member.

[0008] Optionally, the lifting adjusting member comprises a first bearing, a knob, a limiting block and a first screw rod; the limiting block is arranged on the upper side of the shell; the upper end of the first screw rod extends out of the upper side of the shell, and the first screw rod is movably connected with the limiting block through the first bearing; the knob is fixedly arranged on the upper end of the first screw rod; the limiting member comprises a limiting rod and a connecting block; the connecting block comprises a threaded hole and a clamping groove, the connecting block is sleeved on the first screw rod through the threaded hole; the limiting rod is fixed on the clamping groove, the limiting rod extends out of the movable slot and partially extends below the pressing assembly.

[0009] Optionally, the pressing assembly comprises a spindle and a limiting plate; the spindle is arranged above the placing assembly; the limiting plate is fixedly arranged on the side of the spindle; the limiting rod extends below the limiting plate.

[0010] Optionally, the lifting limiting assembly and the limiting plate are both multiple; multiple lifting limiting assemblies are uniformly distributed around the placing assembly, multiple limiting plates are uniformly distributed on the side of the spindle, and the limiting plate corresponds to the lifting limiting assembly one by one.

[0011] Optionally, the asphalt membrane forming device for the tensile test further comprises a scraper assembly and a lifting assembly; the scraper assembly is arranged inside the machine body, and the scraper assembly is arranged below the placing assembly; the scraper assembly partially extends out of the upper side of the machine body and is fitted with the outer edge of the placing assembly; the lifting assembly is fixedly arranged inside the machine body, and the lifting assembly is connected with the scraper assembly.

[0012] Optionally, the scraper assembly comprises a scraper and a threaded pipe fixedly arranged on the lower side of the scraper, the scraper partially extends out of the upper side of the machine body and is fitted with the outer edge of the placing assembly; the lifting assembly comprises a driving member and a second screw rod, the driving member is fixedly arranged in the machine body; the second screw rod is connected with the output end of the driving member, and the second screw rod is inserted into the threaded pipe.

[0013] Optionally, a limiting device is fixedly arranged in the machine body, and the second screw rod is movably connected with the limiting device through a second bearing.

[0014] Optionally, the placing assembly comprises a base plate and a silica gel pad, the base plate is fixedly arranged on the upper side of the machine body, and the silica gel pad is fixedly arranged on the upper side of the base plate.

[0015] Optionally, the asphalt membrane forming device for the pull-out test further comprises a lifting driving assembly, the lifting driving assembly is arranged above the placing assembly, and the pressing assembly is detachably arranged below the lifting driving assembly.

[0016] The beneficial effects of the present application are as follows:

[0017] (1) The asphalt membrane forming device for the pull-out test comprises a machine body, a pressing assembly, a placing assembly and a lifting limiting assembly, the placing assembly and the lifting limiting assembly are arranged on the upper side of the machine body, the pressing assembly is arranged above the placing assembly, and the lifting limiting assembly is arranged at the side of the placing assembly and partially extends below the pressing assembly.

[0018] (2) Meanwhile, the asphalt membrane forming device for the pull-out test further comprises a scraper assembly and a lifting assembly, the scraper assembly is driven by the lifting assembly to move up and down, so that the scraper assembly can move along the outer edge of the placing assembly, and the asphalt overflowing from the placing assembly and the pressing assembly during the pressing and forming process of the asphalt membrane is removed, thereby reducing the influence of the edge overflowed asphalt on the pull-out test result. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the asphalt membrane forming device for the pull-out test in the present application;

[0020] Figure 2 is a further schematic view of the asphalt membrane forming device for the pull-out test in the present application;

[0021] Figure 3 is a schematic view of the shell in the present application;

[0022] Figure 4 is a schematic view of the connecting block in the present application;

[0023] Figure 5 is a cross-sectional schematic view of the connecting block in the present application;

[0024] Figure 6It is the plan view of the asphalt film forming device for drawing test in the utility model (not containing pressing assembly).

[0025] 1, machine body;2, pressing assembly;21, spindle;22, limit plate;3, placing assembly;31, bottom disc;32, silica gel pad;4, lifting limiting assembly;41, lifting adjusting piece;411, first bearing;412, knob;413, limiting block;414, first screw;42, limiting piece;421, limiting rod;422, connecting block;4221, threaded hole;4222, clamping groove;43, shell;431, movable groove;5, scraper assembly;51, scraper;52, threaded pipe;6, lifting assembly;61, driving piece;62, second screw;7, limiting device;71, second bearing. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, and is by no means as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0032] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] Referring to Figure 1 and Figure 2 , a schematic diagram of the asphalt membrane forming device for the pull-out test is shown, which comprises a machine body 1, a pressing assembly 2, a placing assembly 3 and a lifting limiting assembly 4; the placing assembly 3 and the lifting limiting assembly 4 are arranged on the upper side of the machine body 1; the pressing assembly 2 is arranged above the placing assembly 3; the lifting limiting assembly 4 is arranged at the side of the placing assembly 3 and partially extends below the pressing assembly 2.

[0034] In the embodiment, the asphalt membrane forming device for the pull-out test is provided, the height of the lifting limiting assembly 4 is adjusted, so that the descent of the pressing assembly 2 is limited during the pressing of the asphalt material on the placing assembly 3 by the pressing assembly 2, so that the pressing assembly 2, the placing assembly 3 and the lifting limiting assembly 4 cooperate to press the asphalt membrane with the required thickness, and the technical problem that the thickness of the asphalt membrane prepared by the existing method cannot be flexibly and accurately adjusted according to the actual needs and cannot meet the diversified pull-out test requirements is solved.

[0035] For example, the thickness of the asphalt membrane commonly used in the existing pull-out test includes 0.05-0.5 mm, in the process of pressing the asphalt membrane by the asphalt membrane forming device for the pull-out test of the utility model, the asphalt material to be pressed is first placed on the placing assembly 3; the height of the lifting limiting assembly 4 is adjusted, so that the limiting height of the pressing assembly 2 is the required height, such as any height in 0.05-0.5 mm; the asphalt material is pressed by the pressing assembly 2, after the asphalt material is pressed into shape, the pressing assembly 2 is raised, and the asphalt membrane with the required thickness can be obtained on the pressing assembly 2.

[0036] For example, the asphalt membrane forming device for the pull-out test in the utility model can be used for the PosiTest AT-A test instrument.

[0037] Optionally, referring to Figure 2 , Figure 3 , the lifting limiting assembly 4 in the utility model comprises a lifting adjusting piece 41, a limiting piece 42 and a shell 43; the shell 43 has a cavity, the lifting adjusting piece 41 and the limiting piece 42 are arranged in the cavity; the shell 43 is provided with a movable groove 431 on one side close to the placing assembly 3, the limiting piece 42 extends out of the movable groove 431 and partially extends below the pressing assembly 2; the lifting adjusting piece 41 is connected with the limiting piece 42.

[0038] In the embodiment, the height of the limiting piece 42 is adjusted by the lifting adjusting piece 41, so that the limiting height of the limiting piece 42 to the pressing assembly 2 is the required height, so that the pressing assembly 2, the placing assembly 3 and the lifting limiting assembly 4 can cooperate to press the asphalt film with the required thickness; and in the embodiment, the lifting adjusting piece 41 and the limiting piece 42 are supported and protected by the shell 43, so as to avoid the lifting adjusting piece 41 and the limiting piece 42 being polluted by the asphalt or dust during use.

[0039] Optionally, referring to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the lifting adjusting piece 41 in the utility model comprises a first bearing 411, a knob 412, a limiting block 413 and a first screw rod 414; the limiting block 413 is arranged on the upper side of the shell 43; the upper end of the first screw rod 414 extends out of the upper side of the shell 43, and the first screw rod 414 is movably connected with the limiting block 413 through the first bearing 411; the knob 412 is fixedly arranged on the upper end of the first screw rod 414; the limiting piece 42 comprises a limiting rod 421 and a connecting block 422; the connecting block 422 comprises a threaded hole 4221 and a clamping groove 4222, and the connecting block 422 is sleeved on the first screw rod 414 through the threaded hole 4221; the limiting rod 421 is fixed on the clamping groove 4222, the limiting rod 421 extends out of the movable groove 431, and the limiting rod 421 extends to below the pressing assembly 2;

[0040] In the embodiment, the limiting rod 421 is fixedly connected on the connecting block 422 and extends to below the pressing assembly 2 through the movable groove 431, so as to limit the pressing assembly 2. During use, the first screw rod 414 is driven to rotate by the knob 412, so that the connecting block 422 sleeved on the first screw rod 414 moves up and down correspondingly until the limiting height of the limiting rod 421 to the pressing assembly 2 is the height corresponding to the required thickness of the asphalt film, at this time, the asphalt material on the placing assembly 3 can be pressed by the pressing assembly 2, the placing assembly 3 and the lifting limiting assembly 4, so as to obtain the asphalt film with the required thickness.

[0041] Further, the limiting rod 421 in the embodiment is detachably installed on the connecting block 422, so that the limiting rod 421 can be replaced after long-term use, thereby improving the service life.

[0042] Further, the limiting rod 421 in the embodiment can be specifically selected from a stainless steel, an alloy rod piece or any other limiting rod piece known by those skilled in the art, and the utility model is not limited further.

[0043] Further, the lifting adjusting piece 41 in the embodiment can also be replaced by an electric telescopic rod, a hydraulic telescopic rod or other lifting adjusting devices known to those skilled in the art, and the embodiment only provides an implementation.

[0044] Further, the lifting adjusting piece 41 in the embodiment can also be provided with a self-locking structure, which is used to lock the lifting adjusting piece 41 after the limiting rod 421 is adjusted to the required height, so as to avoid the limiting rod 421 from being pressed to descend during the pressing of the asphalt film, so that the thickness of the obtained asphalt film cannot meet the required thickness, and the accuracy of the drawing test is affected.

[0045] Optionally, referring to Figure 2 , the pressing assembly 2 comprises a spindle 21 and a limiting plate 22; the spindle 21 is arranged above the placing assembly 3; the limiting plate 22 is fixedly arranged at the side of the spindle 21; and the limiting rod 421 extends below the limiting plate 22.

[0046] In the embodiment, the limiting rod 421 extends below the limiting plate 22, and the limiting plate 22 is arranged at the side of the spindle 21. During use, the spindle 21 is used to press the asphalt material on the placing assembly 3 to form an asphalt film; and during pressing, the limiting rod 421 limits the height of the limiting plate 22, thereby limiting the spindle 21, so that the spindle 21, the placing assembly 3 and the lifting limiting assembly 4 cooperate to press the asphalt film to the required thickness.

[0047] Further, in the embodiment, since the limiting plate 22 is arranged at the side of the spindle 21, the limiting rod 421 need not extend into the space between the spindle 21 and the placing assembly 3 to limit the spindle 21, thereby avoiding affecting the precision of pressing the asphalt film.

[0048] Optionally, referring to Figures 1 to 6 , the lifting limiting assembly 4 and the limiting plate 22 in the utility model are both multiple; the multiple lifting limiting assemblies 4 are uniformly distributed around the placing assembly 3, the multiple limiting plates 22 are uniformly distributed on the side of the spindle 21, and the limiting plate 22 corresponds to the lifting limiting assembly 4 one by one.

[0049] In the embodiment, the lifting limiting assembly 4 and the limiting plate 22 are both multiple, the limiting plate 22 is uniformly distributed on the side of the spindle 21, and the lifting limiting assembly 4 and the limiting plate 22 correspond to each other one by one, so that during pressing of the asphalt material by the pressing assembly 2, the multiple lifting limiting assemblies 4 and the multiple limiting plates 22 uniformly share the pressure of the pressing assembly 2, thereby effectively limiting the pressing assembly 2.

[0050] Optionally, the asphalt film forming device for pull-out testing in this utility model further includes a scraper assembly 5 and a lifting assembly 6; the scraper assembly 5 is disposed inside the machine body 1 and below the placement assembly 3; the scraper assembly 5 extends out of the upper side of the machine body 1 and fits against the outer edge of the placement assembly 3; the lifting assembly 6 is fixedly disposed inside the machine body 1 and is connected to the scraper assembly 5.

[0051] In the existing technology, during the pressing of asphalt material, excess asphalt material will overflow from the gap between the pressing component 2 and the placement component 3, and then stick to the placement component 3 or the required asphalt film, which will have a certain impact on the results during the pull-out test.

[0052] In this embodiment, the asphalt film forming device for pull-out test also includes a scraper assembly 5 and a lifting assembly 6. The lifting assembly 6 drives the scraper assembly 5 to move up and down, so that the scraper assembly 5 can move along the outer edge of the placement assembly 3, thereby removing the asphalt that overflows from the placement assembly 3 and the pressing assembly 2 during the asphalt film pressing process, reducing the impact of the overflowing asphalt on the pull-out test results.

[0053] Optionally, the scraper assembly 5 in this utility model includes a scraper 51 and a threaded tube 52 fixedly disposed on the lower side of the scraper 51. The scraper 51 extends out of the upper side of the machine body 1 and is in contact with the outer edge of the placement assembly 3. The lifting assembly 6 includes a driving member 61 and a second screw 62. The driving member 61 is fixedly disposed in the machine body 1. The second screw 62 is fixedly connected to the output end of the driving member 61 and is inserted into the threaded tube 52.

[0054] In this embodiment, after the asphalt material is pressed, the second screw 62 is rotated by the drive component 61, which causes the threaded tube 52 to rise along the second screw 62, thereby causing the scraper 51 to rise and remove the asphalt that overflows from the placement component 3, thus reducing the influence of the viscosity of the overflowing asphalt on the test results.

[0055] For example, refer to Figure 2 The driving component 61 can be selected as a rocker arm, a motor, or other driving devices known to those skilled in the art. The rocker arm drive selected in this utility model is only one alternative implementation.

[0056] Optionally, a limiting device 7 is fixedly installed inside the body 1 of this utility model, and the second screw 62 is movably connected to the limiting device 7 through the second bearing 71.

[0057] In the embodiment, the limiting device 7 is fixedly arranged in the machine body 1, the second screw rod 62 is movably connected to the limiting device 7 through the second bearing 71, the second screw rod 62 is rotated under the driving of the driving member 61, the threaded pipe 52 is lifted along the second screw rod 62, and the scraper 51 is lifted to scrape off the asphalt.

[0058] Optionally, the placing assembly 3 in the utility model includes a bottom disc 31 and a silica gel pad 32, the bottom disc 31 is fixedly arranged on the upper side of the machine body 1, and the silica gel pad 32 is fixedly arranged on the upper side of the bottom disc 31.

[0059] In the embodiment, the placing assembly 3 is formed by the bottom disc 31 and the silica gel pad 32, the silica gel pad 32 can improve the flatness of the asphalt film and does not adhere to the asphalt film, so that the entire asphalt film is only adhered to the spindle 21 after the pressing assembly 2 completes the pressing.

[0060] Optionally, the asphalt film forming device for the drawing test further includes a lifting driving assembly, the lifting driving assembly is arranged above the placing assembly 3, and the pressing assembly 2 is detachably arranged below the lifting driving assembly.

[0061] In the embodiment, the lifting driving assembly drives the pressing assembly 2 to move up and down, the pressing assembly 2 and the placing assembly 3 cooperate to complete the pressing of the asphalt material through the lifting driving assembly, the pressing assembly 2 can accurately and quickly perform the pressing operation through the arrangement of the lifting driving assembly, the problems of deviation or uneven pressure that may occur in the process of relying on manpower to press are avoided, and the thickness of the pressed asphalt film is uniform.

[0062] For example, the lifting driving assembly in the embodiment can be selected as an electric driving member, a hydraulic driving member or other lifting driving members known to those skilled in the art.

[0063] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A bitumen film forming device for pull-out testing, characterized in that, The asphalt film forming device for pull-out testing includes: a body (1), a pressing component (2), a placement component (3), and a lifting and limiting component (4); The placement component (3) and the lifting and limiting component (4) are disposed on the upper side of the body (1); The pressing component (2) is disposed above the placement component (3); The lifting limit component (4) is disposed on the side of the placement component (3) and extends partially to the bottom of the pressing component (2).

2. The asphalt film forming device for pull-out testing according to claim 1, characterized in that, The lifting and limiting assembly (4) includes a lifting adjustment component (41), a limiting component (42), and a housing (43); The housing (43) has a cavity, and the lifting adjustment member (41) and the limiting member (42) are disposed in the cavity; A movable groove (431) is provided on the side of the housing (43) near the placement component (3), and the limiting member (42) extends out of the movable groove (431) and partially extends to the bottom of the pressing component (2). The lifting adjustment component (41) is connected to the limiting component (42).

3. The asphalt film forming device for pull-out testing according to claim 2, characterized in that, The lifting adjustment component (41) includes a first bearing (411), a knob (412), a limit block (413), and a first screw (414); The limiting block (413) is disposed on the upper side of the housing (43); the upper end of the first screw (414) extends out of the upper side of the housing (43), and the first screw (414) is movably connected to the limiting block (413) through the first bearing (411); the knob (412) is fixedly disposed on the upper end of the first screw (414); The limiting member (42) includes a limiting rod (421) and a connecting block (422); The connecting block (422) includes a threaded hole (4221) and a slot (4222), and the connecting block (422) is sleeved on the first screw (414) through the threaded hole (4221); The limiting rod (421) is fixed on the slot (4222), the limiting rod (421) extends out of the movable slot (431), and the limiting rod (421) extends to the bottom of the pressing assembly (2).

4. The asphalt film forming device for pull-out testing according to claim 3, characterized in that, The pressing assembly (2) includes a spindle (21) and a limiting plate (22); The spindle (21) is positioned above the placement assembly (3); The limiting plate (22) is fixedly disposed on the side of the spindle (21); The limiting rod (421) extends below the limiting plate (22).

5. The asphalt film forming device for pull-out testing according to claim 4, characterized in that, There are multiple lifting and limiting components (4) and limiting plates (22); Multiple lifting and limiting components (4) are evenly distributed around the placement component (3), and multiple limiting plates (22) are evenly distributed on the side of the spindle (21), with each limiting plate (22) corresponding to a lifting and limiting component (4).

6. The asphalt film forming device for pull-out testing according to claim 1, characterized in that, The asphalt film forming device for pull-out testing also includes a scraper assembly (5) and a lifting assembly (6); The scraper assembly (5) is disposed inside the body (1) and is disposed below the placement assembly (3); The scraper assembly (5) extends out of the upper side of the body (1) and fits against the outer edge of the placement assembly (3); The lifting assembly (6) is fixedly installed inside the machine body (1), and the lifting assembly (6) is connected to the scraper assembly (5).

7. The asphalt film forming apparatus for pull-out testing according to claim 6, characterized in that, The scraper assembly (5) includes a scraper (51) and a threaded tube (52) fixedly disposed on the lower side of the scraper (51). The scraper (51) extends out of the upper side of the body (1) and the scraper (51) is in contact with the outer edge of the placement assembly (3). The lifting assembly (6) includes a driving component (61) and a second screw (62), wherein the driving component (61) is fixedly installed inside the body (1); The second screw (62) is connected to the output end of the drive (61), and the second screw (62) is inserted into the threaded tube (52).

8. The asphalt film forming device for pull-out testing according to claim 7, characterized in that, A limiting device (7) is fixedly installed inside the body (1), and the second screw (62) is movably connected to the limiting device (7) through the second bearing (71).

9. The asphalt film forming device for pull-out testing according to claim 1, characterized in that, The placement component (3) includes a chassis (31) and a silicone pad (32). The chassis (31) is fixedly disposed on the upper side of the body (1), and the silicone pad (32) is fixedly disposed on the upper side of the chassis (31).

10. The asphalt film forming apparatus for pull-out testing according to any one of claims 1 to 9, characterized in that, The asphalt film forming device for pull-out test further includes a lifting drive assembly, which is located above the placement assembly (3), and the pressing assembly (2) is detachably located below the lifting drive assembly.

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