Load rail car for flat plate load experiment

Abstract

The invention provides a load rail car for a plate load experiment, which comprises a group of steel rails, a car body and a load unit, the car body comprises a carrier plate and rail wheels, the rail wheels are clamped between upper blocking eaves and a bottom plate of the steel rails, and the car body moves along the steel rails through the rail wheels; an anchor rod fixing device is installed on the carrying plate and comprises a rod inserting device and a rod hammering device, an anchor rod can slide into the nail placing box along an anchor rod hanging groove, the rod hammering device comprises a hammer rod guide frame, power hammers are installed at the two ends of the transverse rod, the anchor rod is nailed into soil through the power hammers, and fixing of a steel rail is completed. According to the load rail car for the flat plate load test, a complex fixing frame does not need to be additionally built to provide counter-acting force, the load rail car is automatically fixed to the ground through the anchor rods, the site arrangement process is simplified, and time and manpower are saved; through the automatic process, such as automatic hanging, inserting, hammering and dismounting of the anchor rod, the construction efficiency is remarkably improved, and the whole test period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of foundation soil bearing capacity testing, and in particular to a load rail vehicle for a flat plate load experiment. Background Art

[0002] The Plate Load Test (PLT) is a common field test method used to evaluate the bearing capacity and deformation characteristics of foundation soil. This method simulates the pressure of the building foundation by placing a rigid metal plate (i.e., a "plate") on the surface and gradually applying a vertical load to it. The plate load test can be used to determine the bearing capacity, compression modulus, and other related parameters of the soil, which is essential for designing the foundation.

[0003] The basic process of the plate load test is to clean the test site, ensure that the ground is flat, dig a test pit of appropriate size at the predetermined location to place the test plate (pressure plate), and place the test plate at the bottom of the pit to ensure that it is horizontal and in close contact with the soil. Use a jack or other loading equipment to apply a vertical load to the plate. Generally, the load is gradually increased, and each time a certain amount is increased, it is maintained for a period of time to observe the settlement in a stable state. Common loading methods include step-by-step loading and rapid loading. In each loading stage, use a precision measuring instrument (such as a dial indicator or a displacement sensor) to measure the settlement of the plate, record the load and the corresponding settlement, and draw a loading-settlement curve. From the loading-settlement curve, determine the key parameters such as the proportional limit and the ultimate bearing capacity. The proportional limit is usually the end point of the initial straight line segment, representing the end of the elastic stage. The ultimate bearing capacity refers to the load value corresponding to the sharp increase in settlement. When the predetermined settlement or ultimate bearing capacity is reached, stop loading, and you can choose to unload and observe the rebound.

[0004] The plate load test has a wide range of applications and is suitable for various types of soils, including sand, clay, silt, etc. The scale and depth of the test will vary depending on the project requirements. For example, for a shallow foundation, a shallow plate load test can be performed; for a deep foundation, a deep plate load test may be required.

[0005] The current layout of the flat plate load test site and the installation of equipment are relatively complicated. It is necessary to first fix a fixed frame that can provide reaction force outside the test pit, and install jacks and other equipment for providing load on the frame. The above equipment is generally heavy and inconvenient to carry, and the reaction force frame and load loading device are generally hoisted and fixed separately. The installation process is time-consuming and laborious, and the removal process is also inconvenient.

[0006] Traditional plate load tests require the construction of a complex fixed frame around the test pit to provide a reaction force, and the installation and disassembly process of the frame is very time-consuming and labor-intensive. The equipment used in traditional plate load tests is generally large in size and heavy in weight, which is very inconvenient to carry. The transportation and movement of heavy equipment requires the assistance of additional mechanical equipment. The reaction frame and load loading device usually need to be hoisted and fixed separately, which not only requires a lot of time and labor, but may also be affected by weather and site conditions. After the test is completed, dismantling the fixed frame and related equipment is also a tedious task, and the dismantling process also consumes a lot of time and manpower. There may be certain safety hazards in the traditional plate load test process, especially during the equipment handling, installation and disassembly process. Traditional test equipment and methods have certain limitations in adapting to different terrain conditions and test requirements.

[0007] In summary, the main technical problems faced by the existing plate load test are complex site layout, inconvenient equipment transportation, time-consuming and labor-intensive installation and removal process, safety issues and limited flexibility. In response to these problems, the new technical solution proposes an integrated, automated and portable solution to improve the efficiency, convenience and safety of the plate load test. Summary of the invention

[0008] In view of the inconveniences in the layout and installation of the current flat plate load test site, the present invention provides an integrated flat plate load test load rail vehicle, aiming to improve the efficiency and safety of the flat plate load test.

[0009] The solution adopted by the present invention to solve the technical problem is: a load rail vehicle for flat load experiment, comprising a group of rails, a vehicle body and a load unit, wherein the group of rails are laid in parallel on both sides of a test pit.

[0010] The rail comprises a bottom plate and a vertical plate fixed on the bottom plate, the upper end of the vertical plate extends horizontally to one side to form an upper guard eave, the upper guard eaves on the upper sides of the two rails face the middle of the two rails, and nail holes are evenly arranged on the bottom plate located on the outer side of the two rail vertical plates; the car body comprises a carrier plate and a track wheel, the track wheel is clamped between the upper guard eaves and the bottom plate of the rail, and the car body moves along the rail through the track wheel; an anchor rod fixing device is installed on the carrier plate, the anchor rod fixing device comprises a rod insertion device and a hammer rod device, the rod insertion device comprises a rod insertion guide frame, an oil cylinder is installed on the rod insertion guide frame, the telescopic end of the oil cylinder is downward, and an anchor rod frame is installed at the telescopic end of the oil cylinder, the anchor rod frame comprises an arc rod body with an arc mouth facing downward, an anchor rod hanging groove is arranged on the lower side of the arc rod body, the anchor rod comprises a nail cap and a nail body, the anchor rod is suspended in the anchor rod hanging groove, and a symmetrical inward hanging platform is arranged on the lower side of the anchor rod hanging groove, and both ends of the arc rod body extend to the outside of the two rails The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, and the camshafts are provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, and the camshafts are provided with a plurality of camshafts, each of which is provided with a plurality of camshafts.

[0011] Furthermore, the load unit includes a herringbone folding frame, the upper end of the herringbone folding frame is hinged, and the lower end thereof is equipped with a track wheel and can be unfolded. The track wheel is also clamped between the upper eaves and the bottom plate. A folding connecting rod is arranged on the outside of the herringbone folding frame as a limit rod to limit the unfolding angle of the folding frame. A hydraulic load device is suspended and installed in the middle of the herringbone folding frame.

[0012] Furthermore, the herringbone folding frame includes two upper hinged support arms, wherein the lower end of the support arm close to the vehicle body is hinged to the vehicle body, and a track wheel is installed at the lower end of the other support arm. At the same time, a drive motor is installed on the support arm on which the track wheel is installed, and the track wheel is driven to rotate by the drive motor.

[0013] Furthermore, an annular groove is provided in the middle of the nail cap of the anchor rod.

[0014] Furthermore, a slope facing the middle of the two hanging platforms is arranged on the lower side of the hanging platform, and during the pressing process, the movable baffle plate flips and slides along with the slope to the bottom of the nail cap or into the annular groove.

[0015] Furthermore, a driving device and a hydraulic device are installed on the carrier plate. The driving device adopts a diesel engine, which is connected to the rail wheel through a pulley and a belt, so as to drive the vehicle body to move on the rail.

[0016] Furthermore, the diameter of the nail cap is greater than the diameter of the nail body.

[0017] Beneficial effects of the present invention: The present invention provides a load rail vehicle for flat load testing, which does not require the construction of an additional complex fixed frame to provide a reaction force, and is automatically fixed to the ground by anchor rods, which simplifies the site layout process and saves time and manpower; all necessary equipment is integrated on a movable vehicle body, which reduces the weight and volume of the equipment, making the entire system more portable and convenient to move between different locations; the automated anchor rod fixing and disassembly mechanism reduces dependence on manual labor, reduces labor intensity, and improves construction efficiency. The present invention significantly improves construction efficiency and shortens the entire test cycle through automated processes, such as automatic hanging, insertion, hammering, and disassembly of anchor rods.

[0018] The load rail car, through its integrated and automated design, effectively solves the problems existing in existing flat-plate load tests, such as complex site layout, inconvenient equipment transportation, time-consuming and labor-intensive installation process, and inconvenient dismantling process. It improves the efficiency, convenience and safety of the test, while reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a side structural schematic diagram of the load-bearing rail vehicle of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the rod insertion device.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the rod insertion device.

[0023] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the hammer rod device.

[0025] Figure 7 It is a schematic diagram of the process of anchor rod insertion into soil.

[0026] Figure 8 It is a schematic diagram of the process of pulling out the anchor rod.

[0027] Numbers in the figure: 1. Rail; 2. Car body; 3. Load unit; 4. Anchor rod; 5. Drive device; 6. Hydraulic device; 7. Cylinder; 8. Rod insertion device; 9. Hammer rod device; 11. Bottom plate; 12. Vertical plate; 13. Upper guardrail; 14. Nail hole; 21. Track wheel; 22. Carrying plate; 31. Herringbone folding frame; 32. Folding connecting rod; 33. Hydraulic load device; 41. Nail body; 42. Nail cap; 43. Ring groove; 81. Rod insertion guide frame; 82. Anchor rod frame; 83. Nail box; 84. Hanging platform; 85. Rotating shaft; 85. Torsion spring; 86. Fixed baffle plate; 87. Moving baffle plate; 88. Anchor rod hanging groove; 89. Nail groove; 91. Hammer rod guide frame; 92. Cross bar; 93. Power hammer. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0029] In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, internal communication between two components, or direct connection. "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0030] Embodiment 1: In order to improve the efficiency of the flat plate load test, the present invention provides a load rail vehicle for the flat plate load test, such as Figure 1 As shown, it includes a group of steel rails 1, a car body 2 and a load unit 3. The steel rail 1 includes a bottom plate 11 and a vertical plate 12 fixed on the bottom plate 11. The upper end of the vertical plate 12 extends laterally to one side to form an upper retaining eaves 13. Two steel rails 1 are laid in parallel, and the upper retaining eaves 13 on the upper side of the two steel rails 1 face the middle of the two steel rails 1. They are located on the bottom plate 11 outside the vertical plates 12 of the two steel rails 1, and nail holes 14 are evenly arranged along the direction of the steel rails 1.

[0031] A test pit is dug on the ground of the test site, a set of steel rails 1 are laid on the ground at both sides of the test pit, and a vehicle body 2 is driven between the steel rails 1.

[0032] The vehicle body 2 includes a carrier plate 22 and a track wheel 21 . The track wheel 21 is inserted between the upper guardrail 13 and the bottom plate 11 of the rail 1 . The vehicle body 2 moves along the rail 1 via the track wheel 21 .

[0033] The carrier plate 22 is provided with a driving device 5 and a hydraulic device 6 . The driving device 5 is a diesel engine, which is connected to the track wheel 21 through a pulley and a belt, thereby driving the vehicle body 2 to move on the rail 1 .

[0034] An anchor rod fixing device is also installed on the carrier plate 22 , and the anchor rod fixing device includes an inserting rod device 8 and a hammer rod device 9 . The anchor rod includes a nail cap 42 and a nail body 41 . The diameter of the nail cap 42 is greater than the diameter of the nail body 41 .

[0035] The rod insertion device 8 includes a rod insertion guide frame 81, on which an oil cylinder 7 is installed. The telescopic end of the oil cylinder 7 is downward, and an anchor rod frame 82 is installed at the telescopic end of the oil cylinder 7. The anchor rod frame 82 includes an arc-shaped rod body with an arc mouth facing downward, and an anchor rod hanging groove 88 is arranged on the lower side of the arc-shaped rod body. The lower side of the anchor rod hanging groove 88 is provided with symmetrical inward hanging platforms 84, and the width between the hanging platforms 84 is smaller than the width of the anchor rod hanging groove 88. Specifically, the width between the hanging platforms 84 is larger than the diameter of the nail body 41 and smaller than the diameter of the nail cap 42. The width of the anchor rod hanging groove 88 is larger than the diameter of the nail cap 42, so that the anchor rod can be hung in the anchor rod hanging groove 88 through the nail cap 42.

[0036] The two ends of the arc-shaped rod body extend to the outside of the two rails 1, and a horizontal nail box 83 is arranged at the position corresponding to the nail hole 14, and a nail groove 89 connected to the anchor rod hanging groove 88 is arranged in the middle of the nail box 83, and a fixed baffle 86 is arranged on the side of the nail groove 89 located in the walking direction of the vehicle body 2, and a movable baffle 87 is installed on the side facing away from the walking direction of the vehicle body 2 through a rotating shaft 85, and a torsion spring 85 is installed between the movable baffle 87 and the rotating shaft 85, and the movable baffle 87 is naturally in a vertical state through the torsion spring 85, and a hanging platform 84 identical to the anchor rod hanging groove 88 is arranged on the lower side of the opposite surface of the fixed baffle 86 and the movable baffle 87, and the anchor rod can slide into the nail box 83 along the anchor rod hanging groove 88.

[0037] The anchor rod is hung in the anchor rod hanging groove 88. Due to the arc-shaped rod body, the anchor rod can slide toward the end under the action of its own gravity, so that the anchor rod automatically enters the nail box 83.

[0038] In order to avoid interference between the anchor rod and the upper eave 13 of the rail, a penetrating hollow area is set at the position of the anchor rod frame 82 corresponding to the upper eave 13. When the anchor rod interferes with the upper eave 13, the anchor rod frame moves downward, the lower end of the anchor rod presses on the upper eave 13, and the upper end of the anchor rod extends from the hollow area, avoiding damage caused by the hard contact between the anchor rod and the upper eave 13.

[0039] After the anchor rod is inserted into the ground, the anchor rod frame is lifted, and the anchor rod falls along the hollow area and slides into the anchor rod hanging groove 88 again.

[0040] The anchor rod rack 82 is pushed downward by the oil cylinder 7, so that the anchor rod moved into the nail box 83 can be inserted into the ground below the rail 1 through the nail hole 14, and the insertion depth ensures that the anchor rod can stand vertically.

[0041] After the anchor rod is inserted into the soil, the vehicle body 2 moves forward, and the top of the anchor rod pushes the baffle plate 87, so that the movable baffle plate 87 turns up, thereby causing the anchor rod to escape from the nail placing box 83.

[0042] The hammer rod device 9 includes a hammer rod guide frame 91, on which the oil cylinder 7 is installed, and a cross bar 92 is installed at the lower end of the oil cylinder 7. Both ends of the cross bar 92 extend above the nail holes 14 on both sides of the rail 1, and power hammers 93 are installed at both ends of the cross bar 92.

[0043] The anchor rod is initially inserted into and exited from the ground below the rail 1 through the rod insertion device 8 and maintained in an upright state. After the vehicle body 2 moves, the anchor rod is released from the nail box 83, and the hammer rod device 9 moves to the top of the anchor rod. The oil cylinder 7 of the hammer rod device 9 pneumatically extends downward, so that the power hammers 93 at both ends can be pressed on the nail cap 42 of the anchor rod. The power hammer 93 starts to hammer the anchor rod and moves downward with the extension of the oil cylinder 7, thereby nailing the anchor rod into the soil, completing the fixation of the rail 1. The above operation is repeated on each nail hole 14 to complete the fixation of the rail 1.

[0044] The oil cylinders 7 are all controlled by the hydraulic device 6 .

[0045] A load unit 3 is installed at the front end of the vehicle body 2, and the load unit 3 includes a herringbone folding frame 31. The upper end of the herringbone folding frame 31 is hinged, and the lower end thereof is installed with a track wheel 21 and can be unfolded. The track wheel 21 is also clamped between the upper guardrail 13 and the bottom plate 11. A folding connecting rod 32 is arranged on the outer side of the herringbone folding frame 31 as a limit rod to limit the unfolding angle of the folding frame. A hydraulic load device 33 is suspended and installed in the middle of the herringbone folding frame 31.

[0046] After the rail 1 is fixed, the vehicle body 2 moves along the rail 1 so that the load unit 3 corresponds to the test pit of the load test, the herringbone folding frame 31 is moved and unfolded through the track wheel 21 at the lower end, and the hydraulic load device 33 corresponds to the pressure plate in the test pit, and the vertical load required for the load test is provided by the hydraulic load device 33.

[0047] After the test, the herringbone folding frame 31 is folded and contracted, the car body 2 moves to make the rod insertion device 8 correspond to the anchor rod on the rail 1, and the cylinder 7 drives the arc rod body to move downward, and the nail box 83 is placed corresponding to the nail cap 42 of the anchor rod. An inclined surface is set on the lower side of the hanging platform 84 of the movable baffle 87. During the downward pressing process, the movable baffle 87 flips and slides to the bottom of the nail cap 42 with the inclined surface, so that the fixed baffle 86 and the hanging platform 84 of the movable baffle 87 can hook the nail cap 42 of the anchor rod, and the cylinder 7 drives the arc rod body up to pull the anchor rod out of the ground, completing the disassembly of the rail 1.

[0048] Specifically, a ring groove 43 is provided in the middle of the nail cap 42, and the width of the ring groove 43 is greater than the thickness of the hanging platform 84. During the removal of the anchor rod, since the nail cap 42 is hammered into the soil, the lower side of the nail cap 42 is close to the upper surface of the bottom surface of the rail 1, and the hanging platform 84 cannot directly hook the lower side of the nail cap 42, so the ring groove 43 is provided on the nail cap 42. A certain height is maintained between the ring groove 43 and the bottom plate 11, and the hanging platform 84 is hooked in the ring groove 43, and the anchor rod is lifted up by the hanging platform 84 to complete the removal.

[0049] The specific usage of the load rail vehicle is as follows: select a suitable test site, ensure that the ground is flat and suitable for flat plate load tests, and dig a test pit according to the test needs, and prepare positions for installing the rails on both sides of the test pit symmetrically. At this time, the rails 1 are placed in parallel on both sides of the test pit. They can be fixed by the deadweight of the rails 1, or they can be fixed by manually hammering anchor rods into the nail holes 14 at both ends of the rails 1. Move the load rail vehicle to the test site, and the vehicle body 2 drives between the rails 1 through the track wheels 21 below. The track wheels 21 are pressed on the bottom plate 11 of the rails 1, so that the track wheels 21 are located between the upper guardrail 13 and the bottom plate 11. The upper guardrail 13 blocks the track wheels 21 to prevent the vehicle body 2 from being lifted up during the load test, thereby providing a reaction force during the load test.

[0050] After the vehicle frame is arranged on the rail 1, the rod insertion device 8 is started, and the anchor rod frame 82 is driven downward by the oil cylinder 7 to insert the anchor rod through the nail hole 14 into the ground below the rail 1 to ensure that the anchor rod can stand vertically. This step is to initially insert the anchor rod into the soil. The vehicle body 2 is moved so that the top of the anchor rod pushes the baffle 87, and the movable baffle 87 is turned up, so that the anchor rod is disengaged from the nail box 83, and the initial fixation of the anchor rod is completed. In the process of the vehicle body 2 moving forward, the anchor rod frame 82 is synchronously and slowly lifted upward by the oil cylinder 7.

[0051] The vehicle body 2 moves until the hammer rod device 9 moves above the anchor rod, and the vehicle body 2 stops moving. The oil cylinder 7 of the hammer rod device 9 drives the power hammer 93 to press on the nail cap 42 of the anchor rod. The power hammer 93 starts to hammer the anchor rod and moves downward as the oil cylinder 7 extends, nailing the anchor rod into the soil until the nail cap 42 presses on the bottom plate 11 of the rail 1.

[0052] Repeat the above steps until all the corresponding nail holes 14 on the rail 1 are inserted with anchor rods and fixed, thus completing the fixing of the rail 1. The load unit 3 installed at the front end of the vehicle body 2 is unfolded by the herringbone folding frame 31 and moved along the rail 1 by the track wheel 21 to be unfolded into place. The hydraulic load device 33 corresponds to the pressure plate in the test pit, ready to provide vertical load.

[0053] The required vertical load is provided by the hydraulic load device 33, and the plate load test is started. The settlement during the loading process is monitored and the relationship between the load and the settlement is recorded. Precision measuring instruments are used to record the settlement changes during the loading process to ensure the accuracy and reliability of the data, analyze the loading-settlement curve, and determine key parameters such as the proportional limit and the ultimate bearing capacity.

[0054] After the test is completed, the vehicle body 2 moves so that the rod insertion device 8 corresponds to the anchor rod on the rail 1, and the anchor rod frame 82 is driven downward by the oil cylinder 7 to place the nail box 83 corresponding to the nail cap 42 of the anchor rod. The lower side of the hanging platform 84 of the movable baffle 87 is provided with an inclined surface. During the downward pressing process, the movable baffle 87 flips and slides to the bottom of the nail cap 42 with the inclined surface, so that the fixed baffle 86 and the hanging platform 84 of the movable baffle 87 can hook the nail cap 42 of the anchor rod. The oil cylinder 7 drives the anchor rod frame 82 to rise, and the anchor rod is pulled out of the ground, completing the removal of the rail 1.

[0055] After the removal of the anchor rods, the load rail car and its ancillary equipment will be recovered to the designated location, and the equipment will be maintained to ensure that it is in good condition the next time it is used.

[0056] Through the above steps, the load rail car completes the whole process from preparation to installation, testing and disassembly. The use of this load rail car greatly simplifies the process of flat plate load testing, improves the test efficiency, and reduces the dependence on manpower through the automated process, improving the safety and accuracy of the test.

[0057] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A load rail vehicle for flat-plate load testing, characterized in that: The vehicle comprises a set of steel rails (1), a vehicle body (2) and a load unit (3), wherein the set of steel rails (1) are laid in parallel on both sides of a test pit. The steel rail (1) comprises a bottom plate (11) and a vertical plate (12) fixed on the bottom plate (11); the upper end of the vertical plate (12) extends laterally toward one side to form an upper retaining eave (13); the upper retaining eaves (13) on the upper sides of the two steel rails (1) face toward the middle of the two steel rails (1); nail holes (14) are evenly arranged on the bottom plate (11) located outside the vertical plates (12) of the two steel rails (1); The vehicle body (2) comprises a carrier plate (22) and a track wheel (21), the track wheel (21) being inserted between an upper guardrail (13) and a bottom plate (11) of the steel rail (1), and the vehicle body (2) moves along the steel rail (1) via the track wheel (21); An anchor rod fixing device is installed on the carrier plate (22), and the anchor rod fixing device includes an insertion rod device (8) and a hammer rod device (9). The insertion rod device (8) includes an insertion rod guide frame (81). An oil cylinder (7) is installed on the insertion rod guide frame (81). The telescopic end of the oil cylinder (7) is downward. An anchor rod frame (82) is installed at the telescopic end of the oil cylinder (7). The anchor rod frame (82) includes an arc-shaped rod body with an arc mouth facing downward. An anchor rod hanging groove (88) is arranged on the lower side of the arc-shaped rod body. The anchor rod includes a nail cap (42) and a nail body (41). The anchor rod is suspended in the anchor rod hanging groove (88). A symmetrical inward hanging platform (84) is provided at the lower side of the anchor rod hanging groove (88), and both ends of the arc-shaped rod body extend to the outer sides of the two rails (1), and a horizontal nail placing box (83) is provided at the position corresponding to the nail hole (14), and a nail groove (89) connected to the anchor rod hanging groove (88) is provided in the middle of the nail placing box (83), and a fixed baffle (86) is provided on the side of the nail groove (89) located in the walking direction of the vehicle body (2), and a moving baffle (87) is installed on the side facing away from the walking direction of the vehicle body (2) through a rotating shaft (85), and a torsion spring (85) is installed between the moving baffle (87) and the rotating shaft (85), and the moving baffle (87) is naturally in a vertical state through the torsion spring (85), and a hanging platform (84) identical to the anchor rod hanging groove (88) is provided on the lower side of the opposite surface of the fixed baffle (86) and the moving baffle (87), and the anchor rod can slide along the anchor rod hanging groove (88) into the nail placing box (83), The hammer rod device (9) comprises a hammer rod guide frame (91), an oil cylinder (7) is mounted on the hammer rod guide frame, a cross bar (92) is mounted at the lower end of the oil cylinder (7), both ends of the cross bar (92) extend above the nail holes (14) on both sides of the rail (1), power hammers (93) are mounted at both ends of the cross bar (92), anchor rods are nailed into the soil by the power hammers (93), and the rail (1) is fixed. The above operation is repeated on each nail hole (14) to fix the rail (1), and a load unit (3) is mounted on the front end of the vehicle body (2), and a vertical load is provided by the load unit (3) to perform an experiment.

2. The load rail vehicle for flat-plate load testing according to claim 1, characterized in that: The load unit (3) comprises a herringbone folding frame (31), the upper end of the herringbone folding frame (31) is hinged, and the lower end thereof is provided with a track wheel (21) which can be unfolded, and the track wheel (21) is also inserted between the upper guardrail (13) and the bottom plate (11), and a folding connecting rod (32) is arranged on the outside of the herringbone folding frame (31) as a limit rod to limit the unfolding angle of the folding frame, and a hydraulic load device (33) is suspended and installed in the middle of the herringbone folding frame (31).

3. The load rail vehicle for flat-plate load testing according to claim 2, characterized in that: The herringbone folding frame (31) comprises two upper hinged support arms, wherein the lower end of the support arm close to the vehicle body (2) is hinged to the vehicle body (2), and the lower end of the other support arm is mounted with a track wheel (21). At the same time, a driving motor is mounted on the support arm on which the track wheel (21) is mounted, and the track wheel (21) is driven to rotate by the driving motor.

4. The load rail vehicle for flat-plate load testing according to claim 1, characterized in that: A ring groove (43) is provided in the middle of the nail cap (42) of the anchor rod.

5. The load rail vehicle for flat-plate load testing according to claim 1 or 4, characterized in that: The lower side of the hanging platform (84) is provided with an inclined surface facing the middle of the two hanging platforms (84), and during the pressing process, the movable baffle (87) flips and slides along the inclined surface to the bottom of the nail cap (42) or into the annular groove (43).

6. The load rail vehicle for flat-plate load testing according to claim 1, characterized in that: A driving device (5) and a hydraulic device (6) are installed on the carrier plate (22). The driving device (5) uses a diesel engine, which is connected to the rail wheel (21) through a pulley and a belt, thereby driving the vehicle body (2) to move on the rail (1).

7. The load rail vehicle for flat-plate load testing according to claim 1, characterized in that: The diameter of the nail cap (42) is greater than the diameter of the nail body (41).

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