A compaction device for collapsible loess subgrade construction

Abstract

The present invention belongs to the technical field of subgrade compaction, and in particular relates to a compaction device for collapsible loess subgrade construction, including a cab, the lower side wall of the cab is connected with a frame, both the front and rear sides of the frame are connected with wheels, the left side wall of the frame is fixedly connected with a mounting plate, the left side wall of the mounting plate is hinged with a mounting frame, both the front and rear side walls of the mounting frame are rotatably connected with fixed shafts, a convex block is arranged on the rod wall of the fixed shaft located on the front side, and the relative ends of the two fixed shafts are fixedly connected with the same front pressing roller. The present invention can record the compaction times of the subgrade while compacting the collapsible loess subgrade, ensuring the compaction degree of the subgrade, and at the same time, it can also detect the compaction degree of the subgrade and mark the unqualified areas during the compaction of the subgrade, which is convenient for the subsequent supplementary compaction of the compaction device.

Description

Technical Field

[0001] The present invention belongs to the technical field of subgrade compaction, and particularly relates to a compaction device for collapsible loess subgrade construction. Background Art

[0002] Collapsible loess refers to soil that undergoes significant additional deformation due to the destruction of its structure after being soaked in water under the action of the self-weight stress of the overlying soil layer or under the combined action of self-weight stress and additional stress. It belongs to special soil. When constructing a collapsible loess subgrade, it is necessary to apply moisture before compaction work to cause the subgrade to settle, facilitating the smooth progress of the compaction work. Then, a compactor is used to roll back and forth no less than forty times. For example, a compaction device for collapsible loess subgrade construction proposed in the patent publication number: CN 215800740 U.

[0003] When the existing subgrade construction compaction equipment is in use, the following disadvantages exist:

[0004] Due to the relatively soft texture of collapsible loess itself, when using subgrade compaction equipment for compaction operations, construction workers need to drive the compaction equipment to roll back and forth more than forty times. Due to the relatively noisy environment at the subgrade construction site and many miscellaneous matters, it is very difficult for construction workers to remember the number of times of subgrade compaction, resulting in insufficient number of times of subgrade rolling and the problem that the compaction degree of the collapsible loess subgrade does not meet the standard. Moreover, the softness of the collapsible loess subgrade in different areas also varies slightly. Even if the compaction equipment rolls more than forty times, the compaction degree of the subgrade may still not meet the standard, and it is necessary for inspection personnel to use other equipment for inspection. In the case of unqualified inspection, it is also necessary to re-compact, thus prolonging the construction period of the subgrade.

[0005] Therefore, we propose a compaction device for collapsible loess subgrade construction to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a compaction device for collapsible loess subgrade construction in view of the above problems.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: A compaction device for collapsible loess subgrade construction includes a cab, the lower side wall of the cab is connected with a frame, wheels are connected to both the front and rear sides of the frame, a mounting plate is fixedly connected to the left side wall of the frame, a mounting frame is hinged to the left side wall of the mounting plate, fixed shafts are rotatably connected to both the front and rear side walls of the mounting frame, a convex block is provided on the rod wall of the fixed shaft located on the front side, the opposite ends of the two fixed shafts are fixedly connected to the same front pressure roller, a ranging mechanism is provided on the front side wall of the mounting frame, a placement plate is fixedly connected to the right side wall of the frame, and a detection mechanism and a marking mechanism are fixedly connected to the side wall of the placement plate.

[0008] Preferably, the ranging mechanism includes a mounting cylinder and a lifting pipe. The mounting cylinder is fixedly connected to the front side wall of the mounting frame. The lifting pipe is inserted into the mounting cylinder. The lower end of the lifting pipe extends out of the mounting cylinder. An arc-shaped seat is fixedly connected to the lower end of the lifting pipe. An air inlet pipe is fixedly communicated with the pipe wall of the lifting pipe. A piston ring is fixedly sleeved on the pipe wall at the upper end of the lifting pipe. A transverse ring is fixedly connected to the inner wall of the mounting cylinder. The transverse ring is located above the lifting pipe. A vertical ring is fixedly connected to the inner wall of the air inlet pipe. Rotating plates are hinged to the left side of the vertical ring and the upper side of the transverse ring respectively. The transverse ring and the vertical ring are fixedly connected to the rotating plates through springs. A rubber pad is fixedly connected to the side wall of the rotating plate. An installation ring is fixedly connected to the inner wall of the mounting cylinder. The installation ring is located above the transverse ring. A sealing plate is fixedly connected to the upper side wall of the installation ring through a spring. A lower conductive block is fixedly connected to the upper side wall of the sealing plate. An upper conductive block is connected to the outer wall of the mounting cylinder through an adjusting mechanism. A buzzer is fixedly connected to the side wall of the cab. The lower conductive block is electrically connected to an external power supply. The upper conductive block is electrically connected to the buzzer through a timing switch.

[0009] Preferably, the detection mechanism includes an electric push rod and a detection cylinder. The electric push rod is fixedly connected to the placement plate. The detection cylinder is fixedly connected to the output end of the electric push rod. A metal plate is fixedly connected to the inner wall of the detection cylinder through a spring. A metal block is embedded on the right side of the detection cylinder. Two vertical rods are fixedly connected to the lower side wall of the metal plate. The lower ends of the two vertical rods both extend out of the detection cylinder and are fixedly connected with a shielding cover. A fixed frame is fixedly connected to the lower side wall of the shielding cover. A rear pressure roller is rotatably connected to the inner wall of the fixed frame. A trigger box is fixedly connected to the lower side wall of the placement plate. A piston plate is fixedly connected to the left inner wall of the trigger box through a spring. A conduction block is fixedly connected to the left side of the piston plate. A conduction plate is embedded on the lower inner wall of the trigger box. An air discharge pipe is fixedly communicated with the lower side wall of the trigger box. An air pump is fixedly connected to the lower side wall of the placement plate. The air outlet end of the air pump is fixedly communicated with an exhaust pipe. The left end of the exhaust pipe is fixedly communicated with the right side wall of the trigger box. A control valve is arranged inside the exhaust pipe. The control valve is located on the right side of the air outlet end of the air pump. A control button is arranged inside the cab. The control button is electrically connected to the electric push rod. The metal plate is electrically connected to an external power supply. The metal block is electrically connected to the air pump.

[0010] Preferably, the marking mechanism includes a paint box and a vertical pipe. The paint box is fixedly connected to the upper side wall of the placement plate. The vertical pipe is fixedly communicated with the lower side wall of the paint box. The lower end of the vertical pipe extends out of the paint box and passes through the placement plate. The lower end of the vertical pipe is fixedly communicated with a spray head. An electromagnetic valve is arranged inside the vertical pipe. The right end of the exhaust pipe is fixedly communicated with the side wall of the paint box. A check valve is arranged at the end of the exhaust pipe located inside the paint box. The conduction block is electrically connected to an external power supply. The conduction plate is electrically connected to the electromagnetic valve and the control valve.

[0011] Preferably, the adjusting mechanism includes an adjusting box and a threaded cylinder. A threaded rod is threadedly sleeved in the threaded cylinder. The upper end of the threaded rod is fixedly connected with a bent plate. The right end of the bent plate is located in the mounting cylinder and is fixedly connected with the upper side wall of the upper conductive block. A limiting plate is fixedly connected to the left outer wall of the mounting cylinder. A limiting groove matching the limiting plate is formed in the rod wall of the threaded rod. A control rod is rotatably connected to the lower side wall of the mounting cylinder. The upper end of the control rod is fixedly connected with the threaded cylinder. The lower end of the control rod is fixedly connected with an upper bevel gear. A connecting plate is fixedly connected to the lower side wall of the mounting cylinder. A cross bar is rotatably connected to the side wall of the connecting plate. The right end of the cross bar is fixedly connected with a lower bevel gear. The left end of the cross bar is fixedly connected with a rotating cylinder through a spring. Sliding blocks are fixedly connected to the upper and lower inner walls of the rotating cylinder. Two sliding grooves matching the sliding blocks are formed in the rod wall of the cross bar. Two latch pins are fixedly connected to the right side wall of the rotating cylinder. A plurality of card slots matching the latch pins are formed in the side wall of the connecting plate.

[0012] Preferably, an air outlet pipe is fixedly communicated with the right side wall of the mounting cylinder. A cover is threadedly sleeved on the air outlet pipe. A pressure pipe is fixedly communicated with the right side wall of the mounting cylinder. A pressure valve is arranged in the pressure pipe. The pressure pipe is located above the mounting ring, and the air outlet pipe is located below the mounting ring.

[0013] Preferably, the mounting cylinder is made of a transparent material. A size chart is arranged on the side wall of the mounting cylinder. An indicating ring is fixedly sleeved on the outer wall of the upper conductive block. A plurality of ventilation holes are formed in the side wall of the indicating ring.

[0014] Preferably, a water tank is fixedly connected to the upper side wall of the mounting plate. A water pump is fixedly communicated with the left side wall of the water tank. A water spraying pipe is fixedly communicated with the left side wall of the mounting frame. A plurality of water spraying heads are fixedly communicated with the lower side wall of the water spraying pipe. The water outlet end of the water pump is fixedly communicated with the side wall of the water spraying pipe.

[0015] Compared with the prior art, a compaction device for collapsible loess subgrade construction has the following advantages:

[0016] 1. By providing a cab, a frame, wheels, a mounting plate, a mounting frame, a fixed shaft, a front pressing roller, a distance measuring mechanism, a mounting cylinder, a lifting pipe, an arc seat, an air inlet pipe, a piston ring, a horizontal ring, a vertical ring, a rotating plate, a rubber pad, a mounting ring, a sealing plate, a lower conductive block, an adjusting mechanism, a detection mechanism and a marking mechanism, it is possible to record the compaction times of the subgrade while compacting the collapsible loess subgrade, ensuring the compaction degree of the subgrade. And while compacting the subgrade, it is also possible to detect the compaction degree of the subgrade and mark the unqualified areas, facilitating subsequent additional compaction by the compaction device.

[0017] 2. Through the provided adjusting mechanism, the position of the upper conductive block can be adjusted, enabling the compaction equipment to record and measure road sections of different lengths, thus expanding the scope of use of the compaction equipment.

[0018] 3. Through the provided air pump and exhaust pipe, when using pigments to mark unqualified road sections, gas can be injected into the pigment box, increasing the pressure inside the pigment box, improving the discharge speed of the pigments. Moreover, when injecting gas into the pigment box, the gas moves from bottom to top, and the bubbles generated by the gas in the pigment box can stir the pigments in the pigment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a compaction equipment for collapsible loess subgrade construction provided by the present invention;

[0020] Figure 2 is a schematic structural diagram of a distance measuring mechanism in a compaction equipment for collapsible loess subgrade construction provided by the present invention;

[0021] Figure 3 is a schematic internal structural diagram of an air inlet pipe in a compaction equipment for collapsible loess subgrade construction provided by the present invention;

[0022] Figure 4 is a schematic structural diagram of an adjusting mechanism in a compaction equipment for collapsible loess subgrade construction provided by the present invention;

[0023] Figure 5 is a schematic internal structural diagram of a detection cylinder in a compaction equipment for collapsible loess subgrade construction provided by the present invention;

[0024] Figure 6 is a schematic internal structural diagram of a trigger box in a compaction equipment for collapsible loess subgrade construction provided by the present invention.

[0025] In the figure: 1 cab, 2 frame, 3 wheels, 4 mounting plate, 5 mounting frame, 6 fixed shaft, 7 front pressure roller, 8 distance measuring mechanism, 81 mounting cylinder, 82 lifting pipe, 9 arc seat, 10 intake pipe, 11 piston ring, 12 transverse ring, 13 vertical ring, 14 rotating plate, 15 rubber pad, 16 mounting ring, 17 sealing plate, 18 lower conductive block, 19 adjusting mechanism, 191 adjusting box, 192 threaded cylinder, 20 threaded rod, 21 bent plate, 22 limiting plate, 23 control rod, 24 upper bevel gear, 25 connecting plate, 26 cross bar, 27 lower bevel gear, 28 rotating cylinder, 29 sliding block, 30 pin, 31 upper conductive block, 32 buzzer, 33 placing plate, 34 detecting mechanism, 341 electric push rod, 342 detecting cylinder, 35 metal plate, 36 metal block, 37 vertical rod, 38 shielding cover, 39 fixed frame, 40 rear pressure roller, 41 triggering box, 42 piston plate, 43 conducting block, 44 conducting plate, 45 exhaust pipe, 46 air pump, 47 exhaust pipe, 48 control valve, 49 control button, 50 marking mechanism, 501 pigment box, 502 vertical pipe, 51 nozzle, 52 solenoid valve, 53 air outlet pipe, 54 cover, 55 pressure pipe, 56 size chart, 57 indicating ring, 58 ventilation hole, 59 water tank, 60 water pump, 61 water spray pipe, 62 water spray head, 63 bump. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] As Figure 1-6 shown, a compaction device for collapsible loess subgrade construction includes a cab 1. The lower side wall of the cab 1 is connected to a frame 2. Wheels 3 are connected to both the front and rear sides of the frame 2. A mounting plate 4 is fixedly connected to the left side wall of the frame 2. The left side wall of the mounting plate 4 is hinged to a mounting frame 5. Fixed shafts 6 are rotatably connected to both the front and rear side walls of the mounting frame 5. A bump 63 is provided on the rod wall of the front fixed shaft 6. The opposite ends of the two fixed shafts 6 are fixedly connected to the same front pressure roller 7. A distance measuring mechanism 8 is provided on the front side wall of the mounting frame 5. A placing plate 33 is fixedly connected to the right side wall of the frame 2. A detecting mechanism 34 and a marking mechanism 50 are fixedly connected to the side wall of the placing plate 33.

[0028] The ranging mechanism 8 includes an installation cylinder 81 and a lifting pipe 82. The installation cylinder 81 is fixedly connected to the front side wall of the installation frame 5. The lifting pipe 82 is inserted into the installation cylinder 81. The lower end of the lifting pipe 82 extends out of the installation cylinder 81. An arc-shaped seat 9 is fixedly connected to the lower end of the lifting pipe 82. An air inlet pipe 10 is fixedly communicated with the pipe wall of the lifting pipe 82. A piston ring 11 is fixedly sleeved on the pipe wall at the upper end of the lifting pipe 82. A transverse ring 12 is fixedly connected to the inner wall of the installation cylinder 81. The transverse ring 12 is located above the lifting pipe 82. A vertical ring 13 is fixedly connected to the inner wall of the air inlet pipe 10. Rotating plates 14 are hinged to the left side of the vertical ring 13 and the upper side of the transverse ring 12 respectively. The transverse ring 12 and the vertical ring 13 are respectively fixedly connected to the rotating plate 14 through springs. A rubber pad 15 is fixedly connected to the side wall of the rotating plate 14. An installation ring 16 is fixedly connected to the inner wall of the installation cylinder 81. The installation ring 16 is located above the transverse ring 12. The upper side wall of the installation ring 16 is fixedly connected to a sealing plate 17 through a spring. A lower conductive block 18 is fixedly connected to the upper side wall of the sealing plate 17. The outer wall of the installation cylinder 81 is connected to an upper conductive block 31 through an adjusting mechanism 19. A buzzer 32 is fixedly connected to the side wall of the cab 1. The lower conductive block 18 is electrically connected to an external power source. The upper conductive block 31 is electrically connected to the buzzer 32 through a timing switch, and can record the traveling distance of the compaction equipment.

[0029] The detection mechanism 34 includes an electric push rod 341 and a detection cylinder 342. The electric push rod 341 is fixedly connected to the placing plate 33. The detection cylinder 342 is fixedly connected to the output end of the electric push rod 341. A metal plate 35 is fixedly connected to the inner wall of the detection cylinder 342 through a spring. A metal block 36 is embedded on the right side of the detection cylinder 342. Two vertical rods 37 are fixedly connected to the lower side wall of the metal plate 35. The lower ends of the two vertical rods 37 both extend out of the detection cylinder 342 and are fixedly connected to a shielding cover 38. A fixing frame 39 is fixedly connected to the lower side wall of the shielding cover 38. A rear pressure roller 40 is rotatably connected to the inner wall of the fixing frame 39. A trigger box 41 is fixedly connected to the lower side wall of the placing plate 33. A piston plate 42 is fixedly connected to the left side inner wall of the trigger box 41 through a spring. A conduction block 43 is fixedly connected to the left side of the piston plate 42. A conduction plate 44 is embedded on the lower side inner wall of the trigger box 41. An air discharge pipe 45 is fixedly communicated with the lower side wall of the trigger box 41. An air pump 46 is fixedly connected to the lower side wall of the placing plate 33. The air outlet end of the air pump 46 is fixedly communicated with an exhaust pipe 47. The left end of the exhaust pipe 47 is fixedly communicated with the right side wall of the trigger box 41. A control valve 48 is arranged inside the exhaust pipe 47. The control valve 48 is located on the right side of the air outlet end of the air pump 46. A control button 49 is arranged inside the cab 1. The control button 49 is electrically connected to the electric push rod 341. The metal plate 35 is electrically connected to an external power source. The metal block 36 is electrically connected to the air pump 46, and can detect the compaction degree of the roadbed.

[0030] The marking mechanism 50 includes a pigment box 501 and a vertical pipe 502. The pigment box 501 is fixedly connected to the upper side wall of the placement plate 33. The vertical pipe 502 is fixedly communicated with the lower side wall of the pigment box 501. The lower end of the vertical pipe 502 extends out of the pigment box 501 and passes through the placement plate 33. A nozzle 51 is fixedly communicated with the lower end of the vertical pipe 502. An electromagnetic valve 52 is arranged in the vertical pipe 502. The right end of the exhaust pipe 47 is fixedly communicated with the side wall of the pigment box 501. A check valve is arranged at one end of the exhaust pipe 47 located inside the pigment box 501. The conduction block 43 is electrically connected to an external power source. The conduction plate 44 is electrically connected to the electromagnetic valve 52 and the control valve 48, and can mark unqualified road sections.

[0031] The adjusting mechanism 19 includes an adjusting box 191 and a threaded cylinder 192. A threaded rod 20 is threadedly sleeved in the threaded cylinder 192. The upper end of the threaded rod 20 is fixedly connected to a bent plate 21. The right end of the bent plate 21 is located inside the installation cylinder 81 and is fixedly connected to the upper side wall of the upper conductive block 31. A limiting plate 22 is fixedly connected to the left outer wall of the installation cylinder 81. A limiting groove matching the limiting plate 22 is formed in the rod wall of the threaded rod 20. A control rod 23 is rotatably connected to the lower side wall of the installation cylinder 81. The upper end of the control rod 23 is fixedly connected to the threaded cylinder 192. The lower end of the control rod 23 is fixedly connected to an upper bevel gear 24. A connecting plate 25 is fixedly connected to the lower side wall of the installation cylinder 81. A cross bar 26 is rotatably connected to the side wall of the connecting plate 25. The right end of the cross bar 26 is fixedly connected to a lower bevel gear 27. The left end of the cross bar 26 is fixedly connected to a rotating cylinder 28 through a spring. Sliding blocks 29 are fixedly connected to the upper and lower inner walls of the rotating cylinder 28. Two sliding grooves matching the sliding blocks 29 are formed in the rod wall of the cross bar 26. Two latch pins 30 are fixedly connected to the right side wall of the rotating cylinder 28. A plurality of card slots matching the latch pins 30 are formed in the side wall of the connecting plate 25, enabling the compaction device to record and measure road sections of different lengths, and expanding the use range of the compaction device.

[0032] An air outlet pipe 53 is fixedly communicated with the right side wall of the installation cylinder 81. A cover 54 is threadedly sleeved outside the air outlet pipe 53. A pressure pipe 55 is fixedly communicated with the right side wall of the installation cylinder 81. A pressure valve is arranged in the pressure pipe 55. The pressure pipe 55 is located above the installation ring 16, and the air outlet pipe 53 is located below the installation ring 16, enabling all the remaining gas in the installation cylinder 81 to be discharged after the work is completed, and also enabling a part of the gas to be discharged from the pressure pipe 55 when the air pressure in the installation cylinder 81 is relatively high.

[0033] The installation cylinder 81 is made of a transparent material. A size chart 56 is arranged on the side wall of the installation cylinder 81. An indicating ring 57 is fixedly sleeved on the outer wall of the upper conductive block 31. A plurality of air vents 58 are formed in the side wall of the indicating ring 57, facilitating the adjustment of the position of the upper conductive block 31, thereby adjusting how far the compaction device travels before triggering an alarm.

[0034] The upper side wall of the mounting plate 4 is fixedly connected with a water tank 59. The left side wall of the water tank 59 is fixedly communicated with a water pump 60. The left side wall of the mounting frame 5 is fixedly communicated with a water spraying pipe 61. The lower side wall of the water spraying pipe 61 is fixedly communicated with a plurality of water spraying nozzles 62. The water outlet end of the water pump 60 is fixedly communicated with the side wall of the water spraying pipe 61, so that moisture can be applied to the collapsible loess subgrade before compaction, causing the subgrade to settle.

[0035] The operating principle of the present invention is described as follows: When compacting the collapsible loess subgrade, first move the compaction equipment to the subgrade, then rotate and open the cover 54 to discharge all the remaining gas in the mounting cylinder 81, and then rotate and close the cover 54 to keep the mounting cylinder 81 in a sealed state. Then pull the rotating cylinder 28, and the rotating cylinder 28 drives the pin 30 to disengage from the clamping groove. Then rotate the rotating cylinder 28, and the rotating cylinder 28 drives the cross bar 26 to rotate through the mutual cooperation of the sliding block 29 and the sliding groove. The cross bar 26 drives the threaded cylinder 192 to rotate through the mutual cooperation of the lower bevel gear 27 and the upper bevel gear 24, and drives the threaded rod 20, the bent plate 21 and the upper conductive block 31 to move up or down to a suitable position through thread cooperation. According to the length of the section to be compacted, the height of the upper conductive block 31 is adjusted through the mutual cooperation of the indicating ring 57 and the size scale 56. For example, when it is necessary to compact a ten-meter section of the roadbed, the indicating ring 57 is adjusted to the position of 400 meters on the size scale 56. When the equipment compacts the ten-meter section 40 times, the upper conductive block 31 and the lower conductive block 18 will come into contact. The lower conductive block 18 is connected to an external power supply through a button, and the operator can manually transmit electricity to the lower conductive block 18;

[0036] Then the construction workers drive the equipment to compact the road section back and forth. During the compaction process, the front compaction roller 7 contacts the ground and compacts the ground. When the front compaction roller 7 rotates and compacts, it will drive the fixed shaft 6 and the convex block 63 to rotate together. When the convex block 63 rotates, it will continuously squeeze the arc seat 9, and the arc seat 9 drives the lifting block to move upward, so that the gas between the piston ring 11 and the transverse ring 12 passes through the transverse ring 12 and the rotating plate 14 above the transverse ring 12 and enters between the transverse ring 12 and the sealing plate 17, increasing the pressure below the sealing plate 17. Under the push of the pressure, the sealing plate 17 will move upward. There is a spring between the piston ring 11 and the installation cylinder 81. When the convex block 63 separates from the arc seat 9, the piston ring 11 will drive the lifting pipe 82 to move downward under the pulling force of the spring. When the lifting pipe 82 moves downward, the air pressure between the piston ring 11 and the transverse ring 12 will decrease, and the external gas will push the rotating plate 14 under the action of the pressure and enter the lifting pipe 82. In this way, the sealing plate 17 will continuously move upward until the sealing plate 17 drives the lower conductive block 18 to contact the upper conductive block 31. When the upper conductive block 31 contacts the lower conductive block 18, the gas entering the installation cylinder 81 subsequently will continuously increase the pressure in the installation cylinder 81, while the position of the lower sealing plate 17 remains unchanged, and the air pressure in the installation cylinder 81 will continuously increase. When the pressure reaches a certain level, the pressure valve in the pressure pipe 55 will be opened, and a part of the gas will be discharged from the installation cylinder 81. When the upper conductive block 31 contacts the lower conductive block 18, it will connect the circuit of the buzzer 32 and make the buzzer 32 work continuously for a period of time through the timing switch, indicating that the road section has been reciprocally rolled 40 times at this time. After the operator sees the buzzer 32 working, he starts the electric push rod 341 to work by pressing the control button 49, and the control button 49 controls the external current to flow into the metal plate 35 ten seconds later through the power-on delay relay. The electric push rod 341 drives the fixed frame 39 and the rear compaction roller 40 to move downward to the set position together, and the rear compaction roller 40 will contact the ground. When the rear compaction roller 40 contacts the ground, the two vertical rods 37 drive the metal plate 35 to move upward under the reaction force. When the roadbed is compacted to meet the composite standard, the roadbed is hard, and the rear compaction roller 40 drives the metal plate 35 to move upward through the fixed frame 39 and the vertical rod 37, separating the metal plate 35 from the metal block 36. When the roadbed is still soft after being compacted, the rear compaction roller 40 will move downward under the elastic force of the spring between the metal plate 35 and the detection cylinder 342, and the metal plate 35 will also move downward, and the metal plate 35 will continuously contact the metal block 36, thus connecting the circuit of the air pump 46. The air pump 46 transports the external gas into the trigger box 41, increasing the pressure on the right side of the piston plate 42 in the trigger box 41 and making the piston plate 42 move to the left. The unqualified subgrade of a short section of the road will not have too much impact on the entire roadbed. When a section of the roadbed has been very soft, it indicates that the compaction degree of the subgrade at this section of the road is unqualified and will have a greater impact on the entire roadbed. The external gas will be continuously transported into the trigger box 41, making the piston plate 42 continuously move to the left. The piston plate 42 drives the conduction block 43 to contact the conduction plate 44.Thus, the circuit connecting the control valve 48 and the solenoid valve 52 is connected. The air pump 46 conveys most of the gas into the pigment tank 501 through the exhaust pipe 47, increasing the air pressure in the pigment tank 501. Under the action of the pressure, the pigment in the pigment tank 501 sprays out along the vertical pipe 502 and the nozzle 51 to mark the unqualified road surface, facilitating subsequent supplementary compaction by the compaction equipment. When the detection is completed, the remaining gas in the trigger box 41 will be discharged through the air release pipe 45.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compaction device for collapsible loess subgrade construction, comprising a cab (1), characterized in that, The lower side wall of the cab (1) is connected to a vehicle frame (2). Both the front and rear sides of the vehicle frame (2) are connected to wheels (3). The left side wall of the vehicle frame (2) is fixedly connected to a mounting plate (4). The left side wall of the mounting plate (4) is hinged to a mounting frame (5). Both the front and rear side walls of the mounting frame (5) are rotatably connected to a fixed shaft (6). A convex block (63) is provided on the rod wall of the fixed shaft (6) located on the front side. The opposite ends of the two fixed shafts (6) are fixedly connected to the same front pressure roller (7). A distance measuring mechanism (8) is provided on the front side wall of the mounting frame (5). The right side wall of the vehicle frame (2) is fixedly connected to a placement plate (33). A detection mechanism (34) and a marking mechanism (50) are fixedly connected to the side wall of the placement plate (33). The distance measuring mechanism (8) includes a mounting cylinder (81) and a lifting tube (82). The mounting cylinder (81) is fixedly connected to the front side wall of the mounting frame (5). The lifting tube (82) is inserted into the mounting cylinder (81). The lower end of the lifting tube (82) extends out of the mounting cylinder (81). The lower end of the lifting tube (82) is fixedly connected to an arc-shaped seat (9). An air inlet pipe (10) is fixedly communicated with the tube wall of the lifting tube (82). A piston ring (11) is fixedly sleeved on the tube wall at the upper end of the lifting tube (82). A horizontal ring (12) is fixedly connected to the inner wall of the mounting cylinder (81). The horizontal ring (12) is located above the lifting tube (82). A vertical ring (13) is fixedly connected to the inner wall of the air inlet pipe (10). Rotating plates (14) are hinged to the left side of the vertical ring (13) and the upper side of the horizontal ring (12) respectively. The horizontal ring (12) and the vertical ring (13) are respectively fixedly connected to the rotating plates (14) through springs. A rubber pad (15) is fixedly connected to the side wall of the rotating plate (14). A mounting ring (16) is fixedly connected to the inner wall of the mounting cylinder (81). The mounting ring (16) is located above the horizontal ring (12). The upper side wall of the mounting ring (16) is fixedly connected to a sealing plate (17) through a spring. A lower conductive block (18) is fixedly connected to the upper side wall of the sealing plate (17). The outer wall of the mounting cylinder (81) is connected to an upper conductive block (31) through an adjusting mechanism (19). A buzzer (32) is fixedly connected to the side wall of the cab (1). The lower conductive block (18) is electrically connected to an external power supply. The upper conductive block (31) is electrically connected to the buzzer (32) through a timing switch.

2. The construction compaction equipment for collapsible loess subgrade according to claim 1, wherein The detection mechanism (34) includes an electric push rod (341) and a detection cylinder (342). The electric push rod (341) is fixedly connected to the placement plate (33). The detection cylinder (342) is fixedly connected to the output end of the electric push rod (341). A metal plate (35) is fixedly connected to the inner wall of the detection cylinder (342) through a spring. A metal block (36) is embedded in the right side of the detection cylinder (342). Two vertical rods (37) are fixedly connected to the lower side wall of the metal plate (35). The lower ends of the two vertical rods (37) extend out of the detection cylinder (342) and are fixedly connected to a shielding cover (38). A fixed frame (39) is fixedly connected to the lower side wall of the shielding cover (38). A rear pressure roller (40) is rotatably connected to the inner wall of the fixed frame (39). A trigger box (41) is fixedly connected to the lower side wall of the placement plate (33). A piston plate (42) is fixedly connected to the left inner wall of the trigger box (41) through a spring. A conduction block (43) is fixedly connected to the left side of the piston plate (42). A conduction plate (44) is embedded in the lower inner wall of the trigger box (41). An air discharge pipe (45) is fixedly communicated with the lower side wall of the trigger box (41). An air pump (46) is fixedly connected to the lower side wall of the placement plate (33). The air outlet end of the air pump (46) is fixedly communicated with an exhaust pipe (47). The left end of the exhaust pipe (47) is fixedly communicated with the right side wall of the trigger box (41). A control valve (48) is arranged inside the exhaust pipe (47). The control valve (48) is located on the right side of the air outlet end of the air pump (46). A control button (49) is arranged inside the cab (1). The control button (49) is electrically connected to the electric push rod (341). The metal plate (35) is electrically connected to an external power supply. The metal block (36) is electrically connected to the air pump (46).

3. A compaction device for collapsible loess subgrade construction according to claim 2, characterized in that, The marking mechanism (50) includes a paint box (501) and a vertical pipe (502). The paint box (501) is fixedly connected to the upper side wall of the placement plate (33). The vertical pipe (502) is fixedly communicated with the lower side wall of the paint box (501). The lower end of the vertical pipe (502) extends out of the paint box (501) and passes through the placement plate (33). The lower end of the vertical pipe (502) is fixedly communicated with a spray head (51). A solenoid valve (52) is arranged inside the vertical pipe (502). The right end of the exhaust pipe (47) is fixedly communicated with the side wall of the paint box (501). A check valve is arranged at the end of the exhaust pipe (47) located inside the paint box (501). The conduction block (43) is electrically connected to an external power supply. The conduction plate (44) is electrically connected to the solenoid valve (52) and the control valve (48).

4. A compaction device for collapsible loess subgrade construction according to claim 1, characterized in that, The adjusting mechanism (19) includes an adjusting box (191) and a threaded cylinder (192). A threaded rod (20) is sleeved inside the threaded cylinder (192) in a threaded manner. The upper end of the threaded rod (20) is fixedly connected to a bent plate (21). The right end of the bent plate (21) is located inside the mounting cylinder (81) and is fixedly connected to the upper side wall of the upper conductive block (31). A limiting plate (22) is fixedly connected to the left outer wall of the mounting cylinder (81). A limiting groove matching the limiting plate (22) is formed on the rod wall of the threaded rod (20). A control rod (23) is rotatably connected to the lower side wall of the mounting cylinder (81). The upper end of the control rod (23) is fixedly connected to the threaded cylinder (192). The lower end of the control rod (23) is fixedly connected to an upper bevel gear (24). A connecting plate (25) is fixedly connected to the lower side wall of the mounting cylinder (81). A cross bar (26) is rotatably connected to the side wall of the connecting plate (25). The right end of the cross bar (26) is fixedly connected to a lower bevel gear (27). The left end of the cross bar (26) is fixedly connected to a rotating cylinder (28) through a spring. Sliding blocks (29) are fixedly connected to the upper and lower inner walls of the rotating cylinder (28). Two sliding grooves matching the sliding blocks (29) are formed on the rod wall of the cross bar (26). Two latch pins (30) are fixedly connected to the right side wall of the rotating cylinder (28). A plurality of card slots matching the latch pins (30) are formed on the side wall of the connecting plate (25).

5. A compaction device for collapsible loess subgrade construction according to claim 1, characterized in that, An air outlet pipe (53) is fixedly communicated with the right side wall of the mounting cylinder (81). A cover (54) is sleeved on the air outlet pipe (53) in a threaded manner. A pressure pipe (55) is fixedly communicated with the right side wall of the mounting cylinder (81). A pressure valve is arranged inside the pressure pipe (55). The pressure pipe (55) is located above the mounting ring (16), and the air outlet pipe (53) is located below the mounting ring (16).

6. The compaction equipment for collapsible loess subgrade construction according to claim 1, characterized in that, The mounting cylinder (81) is made of a transparent material. A size chart (56) is arranged on the side wall of the mounting cylinder (81). An indicating ring (57) is fixedly sleeved on the outer wall of the upper conductive block (31). A plurality of ventilation holes (58) are formed on the side wall of the indicating ring (57).

7. A compaction device for collapsible loess subgrade construction according to claim 1, characterized in that, A water tank (59) is fixedly connected to the upper side wall of the mounting plate (4). A water pump (60) is fixedly communicated with the left side wall of the water tank (59). A water spraying pipe (61) is fixedly communicated with the left side wall of the mounting frame (5). A plurality of water spraying nozzles (62) are fixedly communicated with the lower side wall of the water spraying pipe (61). The water outlet end of the water pump (60) is fixedly communicated with the side wall of the water spraying pipe (61).

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