Tamping device for road construction and tamping application thereof

Abstract

The invention discloses a tamping device for road construction and tamping application thereof, and belongs to the technical field of road tamping. The machine frame is composed of an upper beam plate, a stand column plate and a lower beam plate, the rammer guide rod and the driving guide rod are arranged on the machine frame in a sliding mode in the vertical direction, the pressing plate is fixedly arranged at the lower end of the rammer guide rod, the upper end and the lower end of the induction cylinder are connected with the pressing plate and the overweight rammer respectively, and the upper end and the lower end of the induction cylinder are connected with the pressing plate and the overweight rammer respectively. The device comprises a super-heavy rammer, a rammer one-way driving assembly, a grading super-heavy assembly enabling the super-heavy rammer to generate three remarkably different super-heavy ramming forces, a compaction degree sensing assembly used for detecting the relative compaction degree of a road after current ramming, and a control system achieving acceleration signal receiving and electrical control. The tamping device is reasonable in structure, the tamping force overweight mode can be adjusted in a self-adaptive mode according to the actual road tamping degree, and the tamping device can be used for road construction.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of road compaction, and in particular to a compaction device for road construction and compaction application thereof. Background Art

[0002] During the road construction process, the foundation and the road surface must be compacted to significantly improve the bearing capacity and stability of the foundation or road surface. Most of the compaction equipment in the prior art is of the vibration type and the drop hammer type. The impact force of the vibration type compaction equipment is usually uncontrollable, and too large or too small impact force will have an adverse effect on the road, so a compaction equipment with adjustable impact force is required. The drop hammer compaction equipment overcomes this limitation, and it can adjust the impact force by changing the drop hammer height. Although the prior art has achieved the compaction of the road, it still has the following shortcomings: First, the compaction degree of different road conditions under the same impact force is significantly different. The existing compaction equipment cannot quickly detect the compaction degree of the road after the current compaction, that is, it cannot judge the relative size of the required impact force; relying solely on changing the drop hammer height to change the impact force cannot meet the actual requirements, that is, the range of change of the impact force is too small. Therefore, there is an urgent need for a compaction device that can adaptively adjust the impact force according to the relative size of the current road compaction degree. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the technical problems existing in the prior art, the present invention provides a compaction device with a reasonable structure, which can adaptively adjust the overweight mode of the impact force according to the actual compaction degree of the road and can be used for road construction.

[0004] In order to solve the above problems, the solution proposed in the present invention is: a compaction device for road construction, which includes a frame composed of an upper beam plate, a column plate and a lower beam plate, and also includes: a rammer guide rod and a drive guide rod slidably mounted on the frame along a vertical direction, a pressure plate fixedly mounted on the lower end of the rammer guide rod, an overweight rammer, an induction cylinder connected to the pressure plate and the overweight rammer at the upper and lower ends respectively, a graded drive plate fixedly mounted on the lower end of the drive guide rod, a hydraulic rod for driving the graded drive plate to lift and lower, a rammer one-way drive assembly, a graded overweight assembly, a compaction degree sensing assembly, and a control system for realizing acceleration signal reception and electrical control.

[0005] The rammer one-way driving assembly is installed between the frame and the pressure plate, and is used to drive the overweight rammer to move upward and allow the overweight rammer to descend under overweight.

[0006] The graded supergravity component includes an energy storage spring C, a medium supergravity component and a high supergravity component. The lower end of the energy storage spring C is free and the upper end is connected to the lower beam plate; the medium supergravity component includes: an energy storage guide rod A slidably installed in the vertical direction, a lower positioning plate A installed at the lower end of the energy storage guide rod A, and an energy storage spring A with a free lower end and an upper end connected to the lower positioning plate A; the high supergravity component includes: an energy storage guide rod B slidably installed in the vertical direction, a lower positioning plate B installed at the lower end of the energy storage guide rod B, and an energy storage spring B with a free lower end and an upper end connected to the lower positioning plate B.

[0007] The compaction degree sensing component is installed inside the sensing cylinder, and includes: a high-frequency sensing mechanism composed of an elastic element A, a mass block A and an accelerometer A, a medium-frequency sensing mechanism composed of an elastic element B, a mass block B and an accelerometer B, and a low-frequency sensing mechanism composed of an elastic element C, a mass block C and an accelerometer C; the natural frequencies of the high-frequency sensing mechanism, the medium-frequency sensing mechanism and the low-frequency sensing mechanism are distributed in an arithmetic progression from large to small.

[0008] Furthermore, the rammer one-way drive assembly includes: gear A and gear B coaxially rotatably mounted on the frame by means of a bracket plate, an incomplete gear rotatably mounted on the bracket plate and intermittently meshing with the gear A, a lifting rack fixedly mounted on the end of the pressure plate in a vertical direction and meshing with the gear B, and a motor driving the incomplete gear to rotate.

[0009] Furthermore, the upper and lower ends of the elastic element A are respectively fixedly connected to the mass block A and the overweight rammer, and the accelerometer A is installed on the mass block A; the upper and lower ends of the elastic element B are respectively fixedly connected to the mass block B and the overweight rammer, and the accelerometer B is installed on the mass block B; the upper and lower ends of the elastic element C are respectively connected to the mass block C and the overweight rammer, and the accelerometer C is installed on the mass block C.

[0010] Furthermore, the medium-super gravity component also includes: an upper positioning plate A and a return spring A, the upper positioning plate A is installed at the upper end of the energy storage guide rod A, the energy storage guide rod A slides through the lower beam plate, and the return spring A is sleeved on the upper part of the energy storage guide rod A; the high-super gravity component also includes an upper positioning plate B and a return spring B, the upper positioning plate B is installed at the upper end of the energy storage guide rod B, the energy storage guide rod B slides through the lower beam plate, and the return spring B is sleeved on the upper part of the energy storage guide rod B.

[0011] Furthermore, when the graded drive plate is in the highest position, the overweight rammer is in a low-multiple supergravity working state, and only the energy storage spring C is in a working state; when the graded drive plate is in a higher position, the overweight rammer is in a medium-multiple supergravity working state, and only the energy storage spring C and the energy storage spring A are in a working state; when the graded drive plate is in the lowest position, the overweight rammer is in a high-multiple supergravity working state, and the energy storage spring C, the energy storage spring A and the energy storage spring B are in a working state at the same time.

[0012] Furthermore, when the super-heavy rammer is in a low-multiple supergravity working state, the distance between the upper positioning plate A and the grading drive plate is smaller than the distance between the upper positioning plate B and the grading drive plate; when the super-heavy rammer is in a medium-multiple supergravity working state, the upper positioning plate A and the grading drive plate are in a pressure-type conflict state, and the upper positioning plate B and the grading drive plate are in a non-conflict state; when the super-heavy rammer is in a high-multiple supergravity working state, both the upper positioning plate A and the grading drive plate, and the upper positioning plate B and the grading drive plate are in a pressure-type conflict state.

[0013] Furthermore, a roller is installed at the lower end of the column plate.

[0014] Another aspect of the present invention is to apply the above-mentioned compaction device for road construction to roadbed or road surface compaction, and the compaction objects include but are not limited to construction site foundations, municipal roads, and civil engineering foundations.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: a compaction device for road construction of the present invention is provided with a compaction degree sensing component, in which three groups of sensing mechanisms with significantly different natural frequencies are provided, and the control system receives accelerations from the three groups of sensing mechanisms and judges the relative compaction degree of the current road according to the maximum value of the acceleration amplitude, so as to achieve the effect of quickly detecting the relative size of the road compaction degree; the present invention is also provided with a rammer one-way drive component and a graded overweight component, wherein the rammer one-way drive component can drive the overweight rammer to move upward to compress the graded overweight component and allow the overweight rammer to descend overweight; by adjusting the descending height of the graded drive plate, the graded overweight component can be placed in three different working modes: low-multiple overgravity state, medium-multiple overgravity state and high-multiple overgravity state, and the graded overweight components in three different working states can make the overweight rammer produce significantly different ramming forces when ramming the road. It can be seen from this that the present invention is a ramming device with a reasonable structure, which can adaptively adjust the overweight mode of ramming force according to the actual road compaction degree, and can be used for road construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structural principle of the compaction device for road construction of the present invention when it is in a medium-multiple supergravity working state.

[0017] Figure 2 yes Figure 1 A is an enlarged schematic diagram of the local structure.

[0018] Figure 3 It is a schematic diagram of the structural principle of the rammer one-way drive assembly of the present invention.

[0019] Figure 4 yes Figure 1 A magnified schematic diagram of the local structure of B.

[0020] Figure 5 It is a schematic diagram of the structural principle of the compaction device for road construction of the present invention when it is in a low-multiple supergravity working state.

[0021] Figure 6 It is a schematic diagram of the structural principle of the compaction device for road construction of the present invention when it is in a high-multiple supergravity working state.

[0022] In the figure, 11 is an upper beam plate; 12 is a column plate; 13 is a lower beam plate; 14 is a roller; 15 is an overweight rammer; 16 is a pressure plate; 17 is a rammer guide rod; 18 is a sensing cylinder; 19 is a limit plate; 21 is a bracket plate; 22 is a rotating shaft A; 23 is a non-complete gear; 24 is a motor; 25 is a gear A; 26 is a gear B; 27 is a rotating shaft B; 28 is a lifting rack; 31 is an energy storage spring C; 32 is a medium-super gravity component; 321 is an energy storage spring A; 322 is a lower positioning plate A; 323 is an energy storage guide rod A; 324 is a reset spring A; 325 is an upper positioning plate A; 326 is a linear bearing A; 33 is a high-super gravity component; 3 31—energy storage spring B; 332—lower positioning plate B; 333—energy storage guide rod B; 334—reset spring B; 335—upper positioning plate B; 336—linear bearing B; 41—grading drive plate; 42—drive guide rod; 43—hydraulic rod; 5—compactness sensing assembly; 51—high-frequency sensing mechanism; 511—elastic element A; 512—mass block A; 513—accelerometer A; 52—medium-frequency sensing mechanism; 521—elastic element B; 522—mass block B; 523—accelerometer B; 53—low-frequency sensing mechanism; 531—elastic element C; 532—mass block C; 533—accelerometer C; 6—control system. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the convenience of description, the compaction density of the road is referred to as the compaction degree of the road below;

[0024] See also Figures 1 to 6The present invention is a compaction device for road construction, which includes a frame composed of an upper beam plate 11, a column plate 12 and a lower beam plate 13, a rammer guide rod 17 and a driving guide rod 42 slidably mounted on the frame along the vertical direction, a pressure plate 16 fixedly mounted at the lower end of the rammer guide rod 17, an overweight rammer 15, an induction cylinder 18 connected to the pressure plate 16 and the overweight rammer 15 at the upper and lower ends, a graded driving plate 41 fixedly mounted at the lower end of the driving guide rod 42, a hydraulic rod 43 driving the graded driving plate 41 to move up and down, a rammer one-way driving assembly, a graded overweight assembly, a compaction degree sensing assembly 5, and a control system 6 for realizing acceleration signal reception and electrical control. In specific implementation, there are two column plates 12, which are mounted along the vertical direction, and a roller 14 is mounted at the lower end of each column plate 12. The roller 14 is used to move the compaction device of the present invention, so as to realize compaction of roads at different positions. The column plate 12 is also provided with a power source for driving the roller 14 to roll, and the power source can be a stepper motor. The upper beam plate 11 and the lower beam plate 13 are installed from top to bottom in the horizontal direction, and the left and right ends of the upper beam plate 11 and the lower beam plate 13 are respectively fixedly connected to the two column plates 12; the rammer guide rod 17 passes through a linear bearing C and is slidably connected to the lower beam plate 13, and its upper end passes through the upper beam plate 11. The upper end of the rammer guide rod 17 is provided with a limit plate 19 for preventing it from falling downward; the driving guide rod 42 passes through a linear bearing D and is slidably connected to the upper beam plate 11. There are two driving guide rods 42, and the two driving guide rods 42 are symmetrically installed on both sides of the rammer guide rod 17; the pressure plate 16 is installed in the horizontal direction, and is used to receive the elastic potential energy accumulated by the graded overweight components after moving upward, so that the overweight rammer 15 generates an overweight rammering force during the descent process. The cylinder part of the hydraulic rod 43 is fixedly mounted on the upper beam plate 11, and the end of the movable rod is fixedly connected to the grading drive plate 41;

[0025] See also Figure 2 and Figure 3The rammer one-way driving assembly is installed between the frame and the pressure plate 16, and is used to drive the overweight rammer 15 to move upward and allow the overweight rammer 15 to descend with overweight. The rammer one-way driving assembly specifically includes: coaxially rotating the gear A25 and the gear B26 installed on the frame with the support plate 21, rotating the incomplete gear 23 installed on the support plate 21 and intermittently meshing with the gear A25, a lifting rack 28 fixedly installed at the end of the pressure plate 16 in the vertical direction and meshing with the gear B26, and a motor 24 driving the incomplete gear 23 to rotate. During specific implementation, the bracket plate 21 is fixedly mounted on the inner side of one of the column plates 12, and the column plate 12 is rotatably mounted with a rotating shaft A22 and a rotating shaft B27. The non-complete gear 23 is fixedly mounted on the rotating shaft A22, and the gear A25 and the gear B26 are fixedly mounted on the rotating shaft B27. The motor 24 is fixedly mounted on the bracket plate 21, and its output shaft is fixedly connected to the rotating shaft A22; the central angle corresponding to the toothless part of the non-complete gear 23 is greater than the central angle corresponding to the meshing tooth part.

[0026] See also Figure 1 , Figure 5 and Figure 6The graded super-weight component is installed on the lower beam plate 13, and is used to make the super-weight rammer 15 produce three significantly different super-weight ramming forces: low super-gravity, middle super-gravity and high super-gravity, specifically including: an energy storage spring C31, a medium super-gravity component 32 and a high super-gravity component 33. The lower end of the energy storage spring C31 is free and the upper end is connected to the lower beam plate 13; the medium super-gravity component 32 includes: an energy storage guide rod A323 slidably installed in the vertical direction, a lower positioning plate A322 installed at the lower end of the energy storage guide rod A323, an upper positioning plate A325, a reset spring A324, and an energy storage spring A321 with a free lower end and an upper end connected to the lower positioning plate A322; the upper positioning plate A325 is installed at The upper end of the energy storage guide rod A323, the energy storage guide rod A323 slides through the lower beam plate 13, and the return spring A324 is sleeved on the upper part of the energy storage guide rod A323; the super gravity component 33 specifically includes: an energy storage guide rod B333 installed for sliding in the vertical direction, a lower positioning plate B332 installed at the lower end of the energy storage guide rod B333, an upper positioning plate B335, a return spring B334, and an energy storage spring B331 whose lower end is free and whose upper end is connected to the lower positioning plate B332; the upper positioning plate B335 is installed at the upper end of the energy storage guide rod B333, the energy storage guide rod B333 slides through the lower beam plate 13, and the return spring B334 is sleeved on the upper part of the energy storage guide rod B333. In specific implementation, the energy storage guide rod A323 passes through the linear bearing A326 and is slidably connected to the lower beam plate 13, and the energy storage guide rod B333 passes through the linear bearing B336 and is slidably connected to the lower beam plate 13. The number of energy storage springs C31, the number of medium super gravity components 32, and the number of high super gravity components 33 are all two, and the two energy storage springs C31, the two medium super gravity components 32, and the two high super gravity components 33 are symmetrically distributed about the rammer guide rod 17.

[0027] See also Figure 1 and Figure 4The compaction degree sensing component 5 is installed inside the sensing cylinder 18, and is used to detect the relative compaction degree of the road after the current compaction. The compaction degree sensing component 5 specifically includes: a high-frequency sensing mechanism 51 composed of an elastic element A511, a mass block A512 and an accelerometer A513, a medium-frequency sensing mechanism 52 composed of an elastic element B521, a mass block B522 and an accelerometer B523, and a low-frequency sensing mechanism 53 composed of an elastic element C531, a mass block C532 and an accelerometer C533; the natural frequencies of the high-frequency sensing mechanism 51, the medium-frequency sensing mechanism 52 and the low-frequency sensing mechanism 53 are distributed in an arithmetic progression from large to small, and the tolerance is not less than five hertz. The upper and lower ends of the elastic element A511 are fixedly connected to the mass block A512 and the overweight rammer 15, respectively, and the accelerometer A513 is installed on the mass block A512. The upper and lower ends of the elastic element B521 are fixedly connected to the mass block B522 and the overweight rammer 15, respectively, and the accelerometer B523 is installed on the mass block B522. The upper and lower ends of the elastic element C531 are connected to the mass block C532 and the overweight rammer 15, respectively, and the accelerometer C533 is installed on the mass block C532. In the specific implementation, the elastic element A511, the elastic element B521 and the elastic element C531 are selected from metal spiral springs; the accelerometer A513, the accelerometer B523 and the accelerometer C533 are selected from acceleration sensors with wireless data transmission function, and the three accelerometers are respectively used to detect the acceleration amplitudes of the mass blocks A512, the mass blocks B522 and the mass blocks C532 when the overweight rammer 15 rams the road. As an embodiment 1, the stiffness of elastic element A511, elastic element B521 and elastic element C531 are equal, and the masses of mass blocks A512, mass blocks B522 and mass blocks C532 are distributed in a geometric progression from small to large; as an embodiment 2, the stiffness of elastic element A511, elastic element B521 and elastic element C531 are distributed in a geometric progression from large to small, and the masses of mass blocks A512, mass blocks B522 and mass blocks C532 are equal; as an embodiment 3, the stiffness of elastic element A511, elastic element B521 and elastic element C531 are distributed in an arithmetic progression from large to small, and the masses of mass blocks A512, mass blocks B522 and mass blocks C532 are distributed in an arithmetic progression from small to large.

[0028] When the graded driving plate 41 is in the highest position, the graded overweight assembly enters the low-multiple overgravity mode, the overweight rammer 15 is in the low-multiple overgravity working state, and only the energy storage spring C31 is in the working state; when the graded driving plate 41 is in the higher position, the graded overweight assembly enters the medium-multiple overgravity mode, the overweight rammer 15 is in the medium-multiple overgravity working state, and only the energy storage spring C31 and the energy storage spring A321 are in the working state; when the graded driving plate 41 is in the lowest position, the graded overweight assembly enters the high-multiple overgravity mode, the overweight rammer 15 is in the high-multiple overgravity working state, and the energy storage spring C31, the energy storage spring A321 and the energy storage spring B331 are in the working state at the same time. When the overweight rammer 15 is in a low-multiple supergravity working state, the distance between the upper positioning plate A325 and the grading drive plate 41 is smaller than the distance between the upper positioning plate B335 and the grading drive plate 41; when the overweight rammer 15 is in a medium-multiple supergravity working state, the upper positioning plate A325 and the grading drive plate 41 are in a pressure-type contact state, and the upper positioning plate B335 and the grading drive plate 41 are in a non-contact state; when the overweight rammer 15 is in a high-multiple supergravity working state, both the upper positioning plate A325 and the grading drive plate 41, and the upper positioning plate B335 and the grading drive plate 41 are in a pressure-type contact state.

[0029] The compaction device used for road construction is applied to compact the roadbed or road surface, and the compaction objects include but are not limited to the foundation of a construction site, a municipal road, and a civil engineering foundation.

[0030] The working principle of the rammer one-way drive assembly: the motor 24 drives the non-complete gear 23 to rotate clockwise at a constant speed. When the non-complete gear 23 is meshing with the gear A25, the gear A25 and the gear B26 rotate counterclockwise, and the pressure plate 16 and the overweight rammer 15 are driven upward through the lifting rack 28 until the pressure plate 16 compresses the graded overweight assembly and causes the graded overweight assembly to accumulate a certain amount of elastic potential energy; when the non-complete gear 23 is disengaged from the gear A25, the overweight rammer 15 and the pressure plate 16 move downward under supergravity acceleration under the action of their own weight and the elastic potential energy of the graded overweight assembly, thereby applying supergravity tamping to the road.

[0031] Working principle of low-gravity mode of graded supergravity module: see Figure 5, the hydraulic rod 43 drives the graded driving plate 41 to move up and down, so that the graded driving plate 41 is in the highest position, and the super-heavy rammer 15 is in a low-multiple super-gravity working state. The lower positioning plate A322 and the lower positioning plate B332 are both in a reset state, that is, the upper end surfaces of the lower positioning plate A322 and the lower positioning plate B332 are pressed against the bottom of the lower beam plate 13. In the case where the graded super-heavy component has no elastic potential energy accumulation, the lower end of the energy storage spring A321 is higher than the lower end of the energy storage spring C31, but lower than the lower end of the energy storage spring B331. Therefore, when the pressure plate 16 moves to the highest position, the energy storage spring C31 will produce a certain compression deformation, while the energy storage spring A321 and the energy storage spring B331 are both non-compressive deformation, so the graded super-heavy component can accumulate a single elastic potential energy, thereby producing a low-multiple super-gravity effect on the super-heavy rammer 15.

[0032] Working principle of medium-gravity mode of graded supergravity module: see Figure 1 , the hydraulic rod 43 drives the graded driving plate 41 to move up and down, so that the graded driving plate 41 is at a medium height position, and the super-heavy rammer 15 is in a medium-time super-gravity working state. The lower positioning plate B332 is in a reset state, but the energy storage guide rod A323 moves downward a certain distance under the push of the graded driving plate 41, so that the lower end of the energy storage spring C31 is equal to the lower end of the energy storage spring A321 in height, and is lower than the lower end of the energy storage spring B331. Therefore, when the pressure plate 16 moves to the highest position, the energy storage spring C31 and the energy storage spring A321 will undergo equal amounts of compression deformation, while the energy storage spring B331 will not undergo compression deformation, so the graded super-heavy assembly can accumulate double the elastic potential energy, thereby producing a medium-time super-gravity effect on the super-heavy rammer 15.

[0033] Working principle of high-gravity mode of graded supergravity module: see Figure 6 , the hydraulic rod 43 drives the graded driving plate 41 to move up and down, so that the graded driving plate 41 is in the lowest position. When the super-heavy rammer 15 is in a high-multiple super-gravity working state, the energy storage guide rod A323 and the energy storage guide rod B333 move downward by different distances under the push of the graded driving plate 41, so that the lower end of the energy storage spring C31 is lower than the lower end of the energy storage spring A321, but higher than the lower end of the energy storage spring B331, and the lower end heights of the energy storage spring A321, the energy storage spring C31, and the energy storage spring B331 are distributed in equal amounts. Therefore, when the pressure plate 16 moves to the highest position, the energy storage spring C31, the energy storage spring A321 and the energy storage spring B331 all undergo different amounts of compression deformation, but the sum of the compression deformation of the energy storage spring A321 and the energy storage spring B331 is exactly equal to twice the compression deformation of the energy storage spring C31. Therefore, the graded overweight assembly can accumulate three times the elastic potential energy, thereby producing a high-multiple overgravity effect on the overweight rammer 15.

[0034] The working principle of the compaction degree sensing component 5: Under the same conditions, the greater the compaction degree of the road, the greater the equivalent stiffness of the road foundation, that is, during the tamping process, the higher the frequency of the reaction impact force of the foundation on the overweight rammer 15, the greater the impact force amplitude. Since the reaction impact force is an external impact excitation for the compaction degree sensing component 5, the three sensing mechanisms with different natural frequencies will inevitably produce significantly different responses under the same impact excitation, that is, the maximum acceleration amplitudes measured by the accelerometer A513, accelerometer B523 and accelerometer C533 in the compaction degree sensing component 5 are significantly different. Therefore, the control system 6 can judge the current road tamping situation according to the source of the maximum acceleration amplitude. That is, when the maximum acceleration comes from the accelerometer A513 in the high-frequency sensing mechanism 51, it means that the compaction degree of the road is the highest and the tamping requirements are basically met. The current position can be tamped again with low-multiple supergravity, and then the device can be moved to the next position to be tamped; when the maximum acceleration comes from the accelerometer B523 in the medium-frequency sensing mechanism 52, it means that the compaction degree of the road is medium and has not yet met the tamping requirements, and it is necessary to continue to implement medium-multiple supergravity tamping on the current position; when the maximum acceleration comes from the accelerometer C533 in the low-frequency sensing mechanism 53, it means that the compaction degree of the road is the smallest, which is far less than the tamping requirements, and high-multiple supergravity tamping is required for the current position.

[0035] The working process and working principle of the present invention are as follows:

[0036] Step 1: The control system 6 drives the grading driving plate 41 to move up and down through the hydraulic rod 43, so that the grading super-weight assembly enters the medium-multiple super-gravity mode;

[0037] Step 2: The control system 6 starts the motor 24, so that the super-heavy rammer 15 moves up and down, and performs a medium-time super-gravity ramming on the road; wherein, the super-heavy rammer 15 performs a super-gravity ramming on the road once every rotation of the incomplete gear 23;

[0038] Step three: during the tamping process, the compaction sensing component 5 transmits the response acceleration value to the control system 6; the control system 6 determines the compaction degree of the current road according to the source of the maximum acceleration.

[0039] Step four, if the compaction degree is the smallest and far less than the tamping requirement, the control system 6 drives the graded driving plate 41 to descend through the hydraulic rod 43, so that the graded super-weight component enters the high-multiple super-gravity mode, and the super-weight rammer 15 performs high-multiple super-gravity tamping on the road; if the current compaction degree is medium and has not yet met the tamping requirement, the medium-multiple super-gravity mode is maintained, and the road continues to be tamped with medium-multiple super-gravity; if the current compaction degree is the highest and basically meets the tamping requirement, the control system 6 drives the graded driving plate 41 to rise and fall through the hydraulic rod 43, so that the graded super-weight component enters the low-multiple super-gravity mode, and performs a low-multiple super-gravity tamping on the current position.

[0040] Step 5: After the low-power supergravity tamping is completed, move the device to the next position to be tamped.

[0041] The above are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should fall within the protection scope of the present invention.

Claims

1. A compacting device for road construction, comprising a frame consisting of an upper beam plate (11), a column plate (12) and a lower beam plate (13), characterized in that: Also includes: A rammer guide rod (17) and a driving guide rod (42) slidably mounted on the frame in a vertical direction, a pressure plate (16) fixedly mounted on the lower end of the rammer guide rod (17), an overweight rammer (15), a sensing cylinder (18) connected to the pressure plate (16) and the overweight rammer (15) at upper and lower ends, a grading driving plate (41) fixedly mounted on the lower end of the driving guide rod (42), a hydraulic rod (43) for driving the grading driving plate (41) to move up and down, a rammer one-way driving assembly, a grading overweight assembly, a compaction degree sensing assembly (5), and a control system (6) for realizing acceleration signal reception and electrical control; The rammer one-way driving assembly is installed between the frame and the pressure plate (16), and is used to drive the overweight rammer (15) to move upward and allow the overweight rammer (15) to descend under overweight; The graded supergravity assembly comprises an energy storage spring C (31), a medium supergravity assembly (32) and a high supergravity assembly (33); the energy storage spring C (31) has a free lower end and an upper end connected to the lower beam plate (13); the medium supergravity assembly (32) comprises: an energy storage guide rod A (323) slidably mounted in a vertical direction, a lower positioning plate A (322) mounted at the lower end of the energy storage guide rod A (323), and an energy storage spring A (321) having a free lower end and an upper end connected to the lower positioning plate A (322); the high supergravity assembly (33) comprises: an energy storage guide rod B (333) slidably mounted in a vertical direction, a lower positioning plate B (332) mounted at the lower end of the energy storage guide rod B (333), and an energy storage spring B (331) having a free lower end and an upper end connected to the lower positioning plate B (332); The compaction degree sensing assembly (5) is installed inside the sensing cylinder (18), and comprises: a high-frequency sensing mechanism (51) composed of an elastic element A (511), a mass block A (512) and an accelerometer A (513), a medium-frequency sensing mechanism (52) composed of an elastic element B (521), a mass block B (522) and an accelerometer B (523), and a low-frequency sensing mechanism (53) composed of an elastic element C (531), a mass block C (532) and an accelerometer C (533); the natural frequencies of the high-frequency sensing mechanism (51), the medium-frequency sensing mechanism (52) and the low-frequency sensing mechanism (53) are distributed in an arithmetic progression from large to small.

2. A compacting device for road construction according to claim 1, characterized in that: The rammer one-way drive assembly comprises: a gear A (25) and a gear B (26) coaxially rotatably mounted on the frame by means of a support plate (21), an incomplete gear (23) rotatably mounted on the support plate (21) and intermittently meshing with the gear A (25), a lifting rack (28) fixedly mounted on the end of the pressure plate (16) in a vertical direction and meshing with the gear B (26), and a motor (24) driving the incomplete gear (23) to rotate.

3. A compaction device for road construction according to claim 1, characterized in that: The upper and lower ends of the elastic element A (511) are respectively fixedly connected to the mass block A (512) and the overweight rammer (15), and the accelerometer A (513) is installed on the mass block A (512). The upper and lower ends of the elastic element B (521) are respectively fixedly connected to the mass block B (522) and the overweight rammer (15), and the accelerometer B (523) is installed on the mass block B (522). The upper and lower ends of the elastic element C (531) are respectively connected to the mass block C (532) and the overweight rammer (15), and the accelerometer C (533) is installed on the mass block C (532).

4. A compaction device for road construction according to claim 1, characterized in that: The medium super gravity component (32) further comprises: an upper positioning plate A (325) and a return spring A (324), wherein the upper positioning plate A (325) is mounted on the upper end of the energy storage guide rod A (323), the energy storage guide rod A (323) slides through the lower beam plate (13), and the return spring A (324) is sleeved on the upper part of the energy storage guide rod A (323); the high super gravity component (33) further comprises an upper positioning plate B (335) and a return spring B (334), wherein the upper positioning plate B (335) is mounted on the upper end of the energy storage guide rod B (333), the energy storage guide rod B (333) slides through the lower beam plate (13), and the return spring B (334) is sleeved on the upper part of the energy storage guide rod B (333).

5. A compaction device for road construction according to claim 1, characterized in that: When the grading drive plate (41) is in the highest position, the super-heavy rammer (15) is in a low-multiple super-gravity working state, and only the energy storage spring C (31) is in a working state; when the grading drive plate (41) is in a relatively high position, the super-heavy rammer (15) is in a medium-multiple super-gravity working state, and only the energy storage spring C (31) and the energy storage spring A (321) are in a working state; when the grading drive plate (41) is in the lowest position, the super-heavy rammer (15) is in a high-multiple super-gravity working state, and the energy storage spring C (31), the energy storage spring A (321) and the energy storage spring B (331) are in a working state at the same time.

6. A compaction device for road construction according to claim 5, characterized in that: When the super-heavy rammer (15) is in a low-multiple super-gravity working state, the distance between the upper positioning plate A (325) and the graded driving plate (41) is smaller than the distance between the upper positioning plate B (335) and the graded driving plate (41); when the super-heavy rammer (15) is in a medium-multiple super-gravity working state, the upper positioning plate A (325) and the graded driving plate (41) are in a pressure-type conflicting state, and the upper positioning plate B (335) and the graded driving plate (41) are in a non-conflicting state; when the super-heavy rammer (15) is in a high-multiple super-gravity working state, the upper positioning plate A (325) and the graded driving plate (41), as well as the upper positioning plate B (335) and the graded driving plate (41) are both in a pressure-type conflicting state.

7. A compaction device for road construction according to claim 1, characterized in that: A roller (14) is installed at the lower end of the column plate (12).

8. A compaction application, characterized in that The compacting device for road construction according to any one of claims 1 to 7 is applied to compacting a roadbed or a road surface.

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