Mold suitable for hamburger rut test

Abstract

The utility model provides a mould suitable for hamburger rut test, which relates to the technical field of experimental equipment, and comprises a rut instrument shell, a lifting mechanism is arranged in the rut instrument shell, the lifting mechanism comprises a lifting plate, the lifting plate is arranged in the rut instrument shell in a lifting manner, and the lifting plate is connected with a sliding bearing plate in a sliding manner; the sliding bearing plate can slide out of the rutting instrument shell; side pressing mechanisms are arranged on the two sides of the rutting instrument shell, and each side pressing mechanism comprises a side pressing block. The rutting instrument has the advantages that the sliding bearing plate is arranged, when a test piece is placed, the sliding bearing plate can slide out of the rutting instrument shell, after the test piece is placed, the sliding bearing plate and the test piece slide back into the rutting instrument shell, and the height of the test piece can be adjusted by adjusting the height of the lifting plate; therefore, the height of the test piece can be set without participation of a base plate, the side pressing block is arranged on the inner side of the rutting instrument shell, the test piece can be pressed from the two sides in an experiment, and the test piece is prevented from shifting in the experiment process.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a mold suitable for a hamburger rutting test. Background Art

[0002] Wheel tracking instruments are primarily used to test the durability of road materials and the wear resistance of pavement surfaces. By simulating the rutting process, they assess the reliability and performance of pavement materials under long-term use. However, current wheel tracking instruments are large, have a low degree of automation, and are complex to operate, making them inconvenient to use. Hamburger rutting plate specimens range in height from 40 to 120 mm. To accommodate specimens of varying heights during testing, pads are required to elevate the specimens, making replacement of pads cumbersome.

[0003] The technical content disclosed in the Chinese patent document (publication number: CN208752077U, patent name: A sample tray for a hamburger wheel rutting instrument) is: it includes a tray body, and two parallel baffles are provided in the inner cavity of the tray body. The baffles can move back and forth along the inner cavity of the tray body to meet the installation space of specimens of different sizes. A bolt is installed in the middle position of the baffle, and the free end of the bolt is threadedly connected to the threaded hole opened on the short side wall of the tray body.

[0004] It can be seen from the above implementation scheme that baffles are provided on both sides of the pallet body, and bolts are provided on the side of the baffles to adjust the distance between the two baffles. The pad can only be installed and removed from the top of the space enclosed by the baffles. In this way, the bolts need to be tightened multiple times to adjust the distance between the two baffles. The gap between the baffle and the pad needs to be able to accommodate the width of a person's fingers to pick up the pad. Moreover, it is more difficult for a person to pick up a baffle of a certain weight from a certain depth, so it is very inconvenient to operate. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and is provided with a sliding receiving plate. When placing the test piece, the sliding receiving plate can be slid out of the wheel tracking instrument housing. After placing the test piece, the sliding receiving plate and the test piece are slid back into the wheel tracking instrument housing. The height of the lifting plate can be adjusted to adjust the height of the test piece, so the height of the test piece can be set without the participation of a pad. Side pressure blocks are provided on the inside of the wheel tracking instrument housing, and the test piece can be pressed from both sides during the experiment to prevent the test piece from shifting during the experiment.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A mold suitable for a hamburger rutting test includes a rutting instrument housing, a lifting mechanism disposed inside the rutting instrument housing, the lifting mechanism including a lifting plate disposed inside the rutting instrument housing in a liftable manner, the lifting plate being slidably connected to a sliding receiving plate, and the sliding receiving plate being slidable out of the rutting instrument housing;

[0008] Side pressure mechanisms are arranged on both sides of the wheel tracking instrument housing. The side pressure mechanisms include side pressure blocks. The side pressure blocks are movably arranged on the inner side of the wheel tracking instrument housing.

[0009] Furthermore, the side pressure mechanism includes a side slider slidably inserted on the side plate of the wheel tracking instrument housing, the side slider is connected to a spring sheet, the free state of the spring sheet is when the angle between the spring sheet and the side slider is the largest in the horizontal direction; the other end of the spring sheet is in contact with the linkage upper rod, the linkage upper rod is slidably inserted in the linkage lower rod, a first linkage spring is provided between the linkage upper rod and the linkage lower rod, the first linkage spring applies a pulling force to the linkage upper rod and the linkage lower rod to move closer to each other; a second linkage spring is provided between the linkage upper rod and the side plate of the wheel tracking instrument housing, the second linkage spring exerts an upward elastic force on the linkage upper rod;

[0010] The lower end of the linkage lower rod is connected to the side pressure linkage rod, and one end of the side pressure linkage rod is connected to the side pressure connecting slider;

[0011] Sliding rails are provided on both sides of the wheel tracking instrument housing, and the side pressure connection slider slides in the sliding rails;

[0012] The sliding track is slidably connected with a wheel track door body, and the lower end of the wheel track door body contacts the side pressure connection slider;

[0013] A positioning slot is provided on a side of the lower end surface of the side sliding block away from the spring sheet.

[0014] Furthermore, when the rutting instrument door body does not press the side pressure connecting slider downward, due to the action of the first linkage spring, the linkage lower rod also moves upward, and the upper end of the linkage lower rod hits the spring sheet and presses against one end of the linkage upper rod until the spring sheet is pressed to the minimum angle with the horizontal direction of the side slider. Since one end of the spring sheet is fixedly connected to the side slider, at this time, the side slider is pulled by the spring sheet and moves toward both sides of the rutting instrument housing until the linkage upper rod is pushed upward by the elastic force of the second linkage spring and inserted into the positioning slot. At this time, the side pressure block is hidden in the side plate of the rutting instrument housing.

[0015] When the wheel tracking meter door body presses the side pressure connecting slider downward, the side pressure linkage rod drives the linkage lower rod to move downward, and the linkage lower rod stretches the first linkage spring. When the pulling force of the first linkage spring on the linkage upper rod is greater than the elastic force of the second linkage spring on the linkage upper rod, the linkage upper rod moves downward. When the linkage upper rod moves down to the point where it can slide out of the positioning slot, the end of the spring sheet is no longer restricted by the linkage lower rod, and the spring sheet returns to its original shape. The horizontal angle between the spring sheet and the side slider becomes larger, and the distance between the point where the spring sheet and the side slider are fixed and the linkage upper rod becomes shorter. Due to the elastic force of the spring sheet, the side pressure block pops out and protrudes from the inner side of the wheel tracking meter housing.

[0016] Furthermore, the lifting mechanism includes a lifting base, a lower slide is provided on one side of the lifting base, a lifting plate is provided directly above the lifting base, and an upper slide is provided on the lower side of the lifting plate;

[0017] The lifting base is hinged to the first lifting rod, the other end of the first lifting rod is connected to the first pulley, and the first pulley is rollingly connected to the upper slideway;

[0018] The lifting plate is hinged to the second lifting rod, the other end of the second lifting rod is connected to the second pulley, and the second pulley is rollingly connected to the lower slide;

[0019] The middle portion of the first lifting rod is hinged to the middle portion of the second lifting rod.

[0020] Furthermore, the lifting base is provided with a rack slide rail, the rack slide rail is slidably connected to a lifting drive bar, and the lifting drive bar includes a rack segment;

[0021] The rack segment is meshed with a gear, the gear is coaxially connected to a drive shaft, the drive shaft is connected to a first drive link, one end of the first drive link is rotatably connected to a second drive link, the second drive link is connected to a middle link, and the middle link is connected to a second pulley.

[0022] Furthermore, the rack slide rail is provided with two slide rail limit blocks, and the slide rail limit blocks are distributed on both sides of the gear;

[0023] Rack limiting blocks are provided at both ends of the rack segment, and the rack limiting blocks are located on the side of the slide rail limiting block away from the gear.

[0024] Furthermore, a limiting groove section is further provided on the lifting drive bar, and a part of the limiting groove section passes through the side plate of the wheel track meter housing to reach the outside of the wheel track meter housing.

[0025] Furthermore, a limiting mechanism is provided on the side of the wheel tracking instrument housing, and the limiting mechanism is located directly above the limiting groove section.

[0026] Furthermore, the limiting mechanism includes a limiting base, a limiting slide bar is provided on the limiting base, the limiting slide bar is slidably connected to a pulling plate, and a limiting plug block is provided below the pulling plate;

[0027] The limiting slide bar is plugged with a spring, and the spring is located between the limiting base and the pulling plate.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] A sliding receiving plate is provided. When placing the test piece, the sliding receiving plate can be slid out of the wheel track meter housing. After placing the test piece, the sliding receiving plate and the test piece can be slid back into the wheel track meter housing. The height of the test piece can be adjusted by adjusting the height of the lifting plate. Therefore, the height of the test piece can be set without the participation of a pad. Side pressure blocks are provided on the inside of the wheel track meter housing. During the experiment, the test piece can be pressed from both sides to prevent the test piece from shifting during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the utility model and, together with the embodiments of the utility model, to explain the utility model, but do not constitute a limitation of the utility model. In the accompanying drawings:

[0031] Figure 1 This is a general schematic diagram of a hamburger rutting test mold according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the hamburger rutting test mold in the open state according to an embodiment of the utility model;

[0033] Figure 3 2. It is a schematic diagram of the explosion of the hamburger rutting test mold according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the explosion of the limiting mechanism of an embodiment of the utility model;

[0035] Figure 5 This is an exploded view of the lifting mechanism of an embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the lifting mechanism structure of an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the first structure of the side pressure mechanism of an embodiment of the utility model;

[0038] Figure 8 This is a second structural diagram of the side pressure mechanism of an embodiment of the present utility model.

[0039] In the figure: 1. Wheel track meter housing; 101. Sliding track; 2. Wheel track meter door; 3. Lifting mechanism; 301. Lifting base; 302. Rack rail; 3021. Slide rail limit block; 303. Lifting drive bar; 3031. Rack section; 3032. Rack limit block; 3033. Limiting groove section; 304. Lower slide; 305. Upper slide; 306. First lifting rod; 3061. First pulley; 307. Second lifting rod; 3071. Second pulley; 308. Drive shaft; 3081. First drive shaft Rod; 3082, second drive connecting rod; 3083, middle connecting rod; 309, gear; 310, lifting plate; 4, side pressure mechanism; 401, side pressure linkage rod; 4011, side pressure linkage slider; 402, linkage lower rod; 403, linkage upper rod; 404, side slider; 4041, positioning slot; 4042, side pressure block; 405, spring sheet; 5, sliding receiving plate; 6, limiting mechanism; 601, limiting base; 602, limiting slide rod; 603, spring; 604, pulling plate; 605, limiting plug-in block. DETAILED DESCRIPTION

[0040] The preferred embodiments of the utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model and are not used to limit the utility model.

[0041] like Figures 1 to 8 As shown, a mold suitable for a hamburger rutting test includes a rutting instrument housing 1, a lifting mechanism 3 is provided inside the rutting instrument housing 1, and the lifting mechanism 3 includes a lifting plate 310. The lifting plate 310 can be lifted and lowered inside the rutting instrument housing 1. The lifting plate 310 is slidably connected to a sliding receiving plate 5, and the sliding receiving plate 5 can slide out of the rutting instrument housing 1;

[0042] A side pressure mechanism 4 is provided on both sides of the wheel tracking instrument housing 1. The side pressure mechanism 4 includes side pressure blocks 4042. The side pressure blocks 4042 can protrude from the inner side of the wheel tracking instrument housing 1 or be hidden in the side panels of the wheel tracking instrument housing 1. Therefore, when placing the test piece, the sliding receiving plate 5 can be slid out of the wheel tracking instrument housing 1. After the test piece is placed, the sliding receiving plate 5 and the test piece can be slid back into the wheel tracking instrument housing 1. The height of the test piece can be adjusted by adjusting the height of the lifting plate 310. Therefore, the height of the test piece can be set without the involvement of a pad. The side pressure blocks 4042 are provided on the inner side of the wheel tracking instrument housing 1. During the experiment, the test piece can be pressed from both sides to prevent it from shifting during the experiment.

[0043] The side pressure mechanism 4 includes a side slider 404 that is slidably inserted into the side plate of the wheel tracking instrument housing 1, and the side slider 404 is connected to a spring sheet 405. The free state of the spring sheet 405 is when the angle between the spring sheet 405 and the side slider 404 is the largest in the horizontal direction; the other end of the spring sheet 405 is in contact with the linkage upper rod 403, and the linkage upper rod 403 is slidably inserted into the linkage lower rod 402. A first linkage spring is provided between the linkage upper rod 403 and the linkage lower rod 402, and the first linkage spring applies a pulling force to the linkage upper rod 403 and the linkage lower rod 402 toward each other; a second linkage spring is provided between the linkage upper rod 403 and the side plate of the wheel tracking instrument housing 1, and the second linkage spring has an upward elastic force on the linkage upper rod 403;

[0044] The lower end of the linkage lower rod 402 is connected to the side pressure linkage rod 401, and one end of the side pressure linkage rod 401 is connected to the side pressure connecting slider 4011; sliding rails 101 are provided on both sides of the wheel track meter housing 1, and the side pressure connecting slider 4011 slides in the sliding rails 101; the sliding rails 101 are slidably connected with the wheel track meter door body 2, and the lower end of the wheel track meter door body 2 contacts the side pressure connecting slider 4011; a positioning slot 4041 is provided on the side of the lower end surface of the side slider 404 away from the spring sheet 405. When the wheel track meter door body 2 does not press the side pressure connecting slider 4011 downward, due to the action of the first linkage spring, the linkage lower rod 402 also moves upward, and the upper end of the linkage lower rod 402 hits the spring sheet 405 and presses against one end of the linkage upper rod 403 until the spring sheet 405 is pressed to the minimum angle with the side slider 404 in the horizontal direction. Since one end of the spring sheet 405 is fixedly connected to the side slider 404, at this time, the side slider 404 is pulled by the spring sheet 405 to move toward the two sides of the wheel track meter housing 1 until the linkage upper rod 403 is pushed upward by the elastic force of the second linkage spring and inserted into the positioning slot 4041. At this time, the side pressure block 4042 is hidden in the side plate of the wheel track meter housing 1;

[0045] When the wheel track meter door body 2 presses the side pressure connecting slider 4011 downward, the side pressure linkage rod 401 drives the linkage lower rod 402 to move downward, and the linkage lower rod 402 stretches the first linkage spring. When the pulling force of the first linkage spring on the linkage upper rod 403 is greater than the elastic force of the second linkage spring on the linkage upper rod 403, the linkage upper rod 403 moves downward. When the linkage upper rod 403 moves down to where it can slide out of the positioning slot 4041, the end of the spring piece 405 is no longer restricted by the linkage lower rod 402, and the spring piece 405 returns to its original shape. The horizontal angle between the spring piece 405 and the side slider 404 becomes larger, and the distance between the point where the spring piece 405 and the side slider 404 are fixed and the linkage upper rod 403 becomes shorter. Due to the elastic force of the spring piece 405, the side pressure block 4042 pops out and protrudes from the inner side of the wheel track meter housing 1. After sliding the sliding receiving plate 5 and the test piece back into the wheel track meter housing 1, when the wheel track meter door body 2 is installed downward along the sliding track 101, the wheel track meter door body 2 will press the side pressure connecting slider 4011 downward, which will cause the side pressure blocks 4042 to press the two sides of the test piece. When the wheel track meter door body 2 is pulled upward along the sliding track 101, the side pressure blocks 4042 will retreat to the two sides of the test piece, so that the test piece is no longer pressed. At this time, pulling the sliding receiving plate 5 can pull the test piece out of the wheel track meter housing 1, and then the test piece can be directly removed.

[0046] The lifting mechanism 3 includes a lifting base 301, a lower slide 304 is provided on one side of the lifting base 301, a lifting plate 310 is provided directly above the lifting base 301, and an upper slide 305 is provided on the lower side of the lifting plate 310;

[0047] The lifting base 301 is hinged to the first lifting rod 306. The other end of the first lifting rod 306 is connected to the first pulley 3061. The first pulley 3061 is rollingly connected to the upper slide 305.

[0048] The lifting plate 310 is hinged to the second lifting rod 307 , the other end of the second lifting rod 307 is connected to the second pulley 3071 , and the second pulley 3071 is rollingly connected to the lower slide 304 ;

[0049] The middle portion of the first lifting rod 306 is hinged to the middle portion of the second lifting rod 307 .

[0050] A rack rail 302 is provided on the lifting base 301, and the rack rail 302 is slidably connected to a lifting drive bar 303, and the lifting drive bar 303 includes a rack segment 3031;

[0051] The rack segment 3031 is meshedly connected to the gear 309, the gear 309 is coaxially connected to the drive shaft 308, the drive shaft 308 is connected to the first drive link 3081, one end of the first drive link 3081 is rotatably connected to the second drive link 3082, the second drive link 3082 is connected to the middle link 3083, and the middle link 3083 is connected to the second pulley.

[0052] The rack rail 302 is provided with two rail limit blocks 3021 , which are distributed on both sides of the gear 309 ;

[0053] Rack limit blocks 3032 are provided at both ends of the rack segment 3031. The rack limit block 3032 is located on the side of the slide rail limit block 3021 away from the gear 309, thereby limiting the gear 309 to be engaged with the rack segment 3031. When the rack segment 3031 is pulled to a position close to the end and engages with the gear 309, the rack limit block 3032 will be against the slide rail limit block 3021, so that the gear 309 and the rack segment 3031 will not be staggered, and at the same time, it also limits the maximum and minimum heights of the lifting plate 310.

[0054] The lifting drive bar 303 is also provided with a limit slot section 3033. A portion of the limit slot section 3033 extends through the side panel of the wheel track meter housing 1 to the outside of the housing 1. A limit mechanism 6 is provided on the side of the wheel track meter housing 1, directly above the limit slot section 3033. The limit mechanism 6 includes a limit base 601, on which is provided a limit slide 602. The limit slide 602 is slidably connected to a pull plate 604, below which is provided a limit plug block 605. The limit slide 602 is connected to a spring 603, which is located between the limit base 601 and the pull plate 604. When adjusting the height of the lifting plate 310, it is only necessary to pull up the pulling plate 604 so that the limiting plug-in block 605 is not inserted into the limiting tooth gap of the limiting groove section 3033. The lifting drive bar 303 can be pushed to make the gear section 3031 push the gear 309 to rotate, thereby causing the driving shaft 308 to rotate. The rotation of the driving shaft 308 drives the first driving link 3081 to swing, and then drives the second driving link 3082 to swing, thereby pushing the middle link 3083 to move, so that the second pulley 3071 slides in the lower slide 304, and the first pulley 3061 slides in the upper slide 305.

[0055] When the second pulley 3071 and the first pulley 3061 both slide in the direction away from the gear 309, the lifting plate 310 descends. When the second pulley 3071 and the first pulley 3061 both slide in the direction close to the gear 309, the lifting plate 310 rises. When the position of the lifting plate 310 is adjusted, the pulling plate 604 is lowered so that the limiting plug-in block 605 is inserted into the limiting tooth gap of the limiting slot section 3033. Then the lifting drive bar 303 cannot be pushed and the height of the lifting plate 310 is fixed.

[0056] This utility model patent is a scientific research project based on the construction of the science and technology innovation base of Guangdong Province's "Double Hundred Action" and Xinxing County's "Hundred Thousand Million Project". The mold suitable for the hamburger rutting test is equipped with a sliding receiving plate 5. When placing the test piece, the sliding receiving plate 5 can be slid out of the rutting instrument housing 1. After placing the test piece, the sliding receiving plate 5 and the test piece are slid back into the rutting instrument housing 1. The height of the lifting plate 301 can be adjusted to adjust the height of the test piece. Therefore, the height of the test piece can be set without the participation of a pad. A side pressure block 4042 is provided on the inner side of the rutting instrument housing 1. During the experiment, the test piece can be pressed from both sides to prevent the test piece from shifting during the experiment.

[0057] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A mold suitable for hamburger rutting test, characterized in that: The invention comprises a wheel track meter housing (1), wherein a lifting mechanism (3) is provided inside the wheel track meter housing (1), wherein the lifting mechanism (3) comprises a lifting plate (310), wherein the lifting plate (310) is liftably provided inside the wheel track meter housing (1), wherein the lifting plate (310) is slidably connected to a sliding receiving plate (5), and wherein the sliding receiving plate (5) is slidable out of the wheel track meter housing (1); Side pressure mechanisms (4) are provided on both sides of the wheel track meter housing (1). The side pressure mechanisms (4) include side pressure blocks (4042). The side pressure blocks (4042) are movably provided on the inner side surfaces of the wheel track meter housing (1).

2. The mold suitable for the hamburger rutting test according to claim 1, characterized in that: The side pressure mechanism (4) includes a side slider (404) slidably plugged into a side plate of the wheel track meter housing (1), the side slider (404) being connected to a spring sheet (405), and the free state of the spring sheet (405) being when the angle between the spring sheet (405) and the side slider (404) is the largest in the horizontal direction; The other end of the spring sheet (405) contacts the linkage upper rod (403), and the linkage upper rod (403) is slidably inserted into the linkage lower rod (402). A first linkage spring is provided between the linkage upper rod (403) and the linkage lower rod (402), and the first linkage spring applies a pulling force to the linkage upper rod (403) and the linkage lower rod (402) to move them closer to each other; a second linkage spring is provided between the linkage upper rod (403) and the side plate of the wheel tracking instrument housing (1), and the second linkage spring exerts an upward elastic force on the linkage upper rod (403); The lower end of the linkage lower rod (402) is connected to the side pressure linkage rod (401), and one end of the side pressure linkage rod (401) is connected to the side pressure connecting slider (4011); Sliding rails (101) are provided on both sides of the wheel tracking instrument housing (1), and the side pressure connection slider (4011) slides in the sliding rails (101); The sliding track (101) is slidably connected with a wheel track door body (2), and the lower end of the wheel track door body (2) contacts the side pressure connection slider (4011); a positioning slot (4041) is provided on the side of the lower end surface of the side slider (404) away from the spring sheet (405).

3. The mold suitable for the hamburger rutting test according to claim 2, characterized in that: When the wheel track meter door body (2) presses the side pressure connecting slider (4011) downward, the side pressure linkage rod (401) drives the linkage lower rod (402) to move downward, and the linkage lower rod (402) stretches the first linkage spring. When the pulling force of the first linkage spring on the linkage upper rod (403) is greater than the elastic force of the second linkage spring on the linkage upper rod (403), the linkage upper rod (403) moves downward. When the linkage upper rod (403) moves downward to a point where it can slide out of the positioning slot (4041), the linkage upper rod (403) moves downward. After that, the end of the spring sheet (405) is no longer restricted by the linkage lower rod (402), and the spring sheet (405) returns to its original shape. The angle between the spring sheet (405) and the side slider (404) in the horizontal direction becomes larger, and the distance between the point where the spring sheet (405) and the side slider (404) are fixed and the linkage upper rod (403) becomes shorter. Due to the elastic force of the spring sheet (405), the side pressure block (4042) pops out and protrudes from the inner side of the wheel tracking instrument housing (1).

4. The mold suitable for the hamburger rutting test according to any one of claims 1 to 3, characterized in that: The lifting mechanism (3) includes a lifting base (301), a lower slide (304) is provided on one side of the lifting base (301), a lifting plate (310) is provided directly above the lifting base (301), and an upper slide (305) is provided on the lower side of the lifting plate (310); the lifting base (301) is hinged to a first lifting rod (306), the other end of the first lifting rod (306) is connected to a first pulley (3061), and the first pulley (3061) is rollingly connected to the upper slide (305); The lifting plate (310) is hinged to the second lifting rod (307), the other end of the second lifting rod (307) is connected to the second pulley (3071), and the second pulley (3071) is rollingly connected to the lower slide (304); The middle portion of the first lifting rod (306) is hinged to the middle portion of the second lifting rod (307).

5. The mold suitable for the hamburger rutting test according to claim 4, characterized in that: The lifting base (301) is provided with a rack slide rail (302), the rack slide rail (302) is slidably connected to a lifting drive bar (303), and the lifting drive bar (303) includes a rack segment (3031); The rack segment (3031) is meshedly connected with a gear (309), the gear (309) is coaxially connected with a driving shaft (308), the driving shaft (308) is connected to a first driving link (3081), one end of the first driving link (3081) is rotatably connected to a second driving link (3082), the second driving link (3082) is connected to a middle link (3083), and the middle link (3083) is connected to a second pulley.

6. The mold suitable for the hamburger rutting test according to claim 5, characterized in that: The rack slide rail (302) is provided with two slide rail limit blocks (3021), and the slide rail limit blocks (3021) are distributed on both sides of the gear (309); Rack limit blocks (3032) are provided at both ends of the rack segment (3031), and the rack limit blocks (3032) are located on the side of the slide rail limit block (3021) away from the gear (309).

7. The mold suitable for the hamburger rutting test according to claim 6, characterized in that: A limiting groove section (3033) is also provided on the lifting drive bar (303), and a portion of the limiting groove section (3033) passes through the side plate of the wheel track meter housing (1) to reach the outside of the wheel track meter housing (1).

8. The mold suitable for the hamburger rutting test according to claim 7, characterized in that: A limiting mechanism (6) is provided on the side of the wheel tracking instrument housing (1), and the limiting mechanism (6) is located directly above the limiting groove section (3033).

9. The mold suitable for the hamburger rutting test according to claim 8, characterized in that: The limiting mechanism (6) includes a limiting base (601), a limiting slide bar (602) is provided on the limiting base (601), the limiting slide bar (602) is slidably connected to a pulling plate (604), and a limiting plug-in block (605) is provided below the pulling plate (604); The limiting slide bar (602) is plugged with a spring (603), and the spring (603) is located between the limiting base (601) and the pulling plate (604).

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