An assembled dynamic compaction structure for subgrade dynamic compaction

Abstract

The present invention belongs to the technical field of dynamic compaction, and discloses an assembled dynamic compaction structure for subgrade dynamic compaction, aiming to solve the problems that there are large deviations between the falling points of the heavy hammer and the designed points during the use of the existing crawler-type dynamic compactor, and it does not meet the entry conditions in some occasions. The present invention includes: a support slide rail, a bottom plate is connected below the support slide rail; a connecting beam for connecting two support slide rails together to form an integral body; an assembled gantry, including a cross beam and a spliced vertical beam, the vertical beam is installed on the two support slide rails, both ends of the cross beam are respectively connected to the top of the vertical beam, and a sliding rod is installed below the cross beam; a winch for driving the heavy hammer to move up and down to compact the subgrade. The present invention is convenient for assembling and tamping operations at some special construction sites; at the same time, it has the characteristic of accurate falling position of the heavy hammer, which is convenient for improving the quality of dynamic compaction.

Description

Technical Field

[0001] The present invention belongs to the technical field of dynamic compaction of subgrades, and particularly relates to an assembled dynamic compaction structure for subgrade dynamic compaction, mainly used for strengthening the foundations of highways, railways, airports, industrial areas, etc. Background Technique

[0002] The foundation of a construction project needs to compact and tamp soft soil. Small construction projects can complete the tamping of the foundation with small electric rammers. Larger construction projects usually have strict requirements for the foundation and need to be tamped to the design requirements to be considered qualified. Therefore, a dynamic compactor needs to be used.

[0003] At present, the dynamic compactors used in construction projects all use large crawler-type dynamic compactors to freely drop a 8-30-ton heavy hammer from a height of 6-30 m to strongly tamp the soil body, rapidly improving the bearing capacity and compression modulus of the foundation, forming a relatively uniform and dense foundation, and changing the pore distribution in the foundation within a certain depth of the foundation. The crawler-type dynamic compactor has the advantages of good effect and low cost, so it is widely used in construction projects.

[0004] For example, the patent with the application number 202221658235.6 discloses an automatic tamping measurement device for a crawler-type dynamic compactor. Another example is that the patent with the application number 2022221658412.0 discloses an intelligent force-measuring device for a crawler-type dynamic compactor. Another example is that the patent with the application number 202020017918.8 discloses a crawler-type dynamic compactor. Another example is that the patent with the application number 201721476967.2 discloses an automatic remote-control dynamic compactor. Another example is that the patent with the application number 202023056694.0 discloses a machine-hydraulic integrated dynamic compactor.

[0005] Combined with the existing dynamic compactors exemplified above, they all use a crawler-type chassis as a support, and a cab, a suspension and a winch are installed on the crawler-type chassis. The working process of the crawler-type dynamic compactor is as follows: Hydraulic drive drives the suspension to rotate to a specified position, then the winch works to lift the heavy hammer to a specified height, and then the heavy hammer is released to perform dynamic compaction on the soil body.

[0006] However, the current crawler-type dynamic compactor has the following technical problems in actual use:

[0007] For some narrow terrains in mountainous areas and harsh conditions around the construction site, medium and large crawler-type dynamic compactors with high height and long length do not meet the entry conditions, while small dynamic compactors cannot meet the tamping requirements.

[0008] More importantly, although the ramming position is also located and confirmed at the dynamic compaction site, the ramming position is basically determined by the experience of the driver of the crawler-type dynamic compactor. When performing point ramming, the situation where the falling point of the heavy hammer deviates greatly from the designed point is likely to occur. Summary of the Invention

[0009] The present invention provides an assembled dynamic compaction structure for subgrade dynamic compaction to solve the problems that there is a large deviation between the falling point of the heavy hammer and the designed point during the use of the existing crawler-type dynamic compactor and it does not meet the entry conditions in some occasions. The on-site assembled structure is adopted, which is convenient for assembling and ramming operations at some special construction sites (such as narrow mountainous areas and harsh conditions around the construction site); at the same time, compared with the existing crawler-type dynamic compactor that relies on the operation of the driver, the present invention has the characteristic that the falling position of the heavy hammer is accurate, which is convenient for improving the quality of dynamic compaction (especially when performing point ramming).

[0010] In order to solve the technical problems, the technical solutions adopted by the present invention are as follows:

[0011] An assembled dynamic compaction structure for subgrade dynamic compaction, characterized by comprising:

[0012] Two mutually parallel support slide rails, which are used to be placed on the soil body and serve as the support of the whole structure, and a bottom plate is connected below the support slide rails;

[0013] A connecting beam, which is used to connect the two support slide rails together to form a whole;

[0014] An assembled gantry, including a cross beam and spliced vertical beams. The vertical beams are installed on the two support slide rails, both ends of the cross beam are respectively connected to the tops of the vertical beams, and a sliding rod is installed below the cross beam;

[0015] A winch, which is installed on the sliding rod and used to drive the heavy hammer to move up and down to perform dynamic compaction on the subgrade.

[0016] In some embodiments, a plurality of rollers are installed on the top of the cross beam through a spindle. An installation block is sleeved on the sliding rod. A through hole adapted to the sliding rod is opened on the installation block. Installation plates in an "L" shape are installed on both sides of the installation block. One end of the installation plate is in contact with the roller, one end of the installation plate is fixedly connected to the installation block, and the winch is installed below the installation block.

[0017] In some embodiments, a linear module is installed on the cross beam for driving the installation block to slide on the sliding rod. The linear module drives the installation block to slide on the sliding rod.

[0018] In some embodiments, the bottom of the vertical beam has a mounting base. The lower part of the mounting base is provided with a mounting groove. A plurality of rollers are installed on the inner top of the mounting groove. The mounting groove cooperates with the support slide rail and makes the top surface of the support slide rail contact with the rollers.

[0019] In some embodiments, the mounting base includes a left mounting seat and a right mounting seat that are integrally in a "concave" shape. The left mounting seat and the right mounting seat are connected to each other by bolts. The cavities of the left mounting seat and the right mounting seat together form a mounting groove that cooperates with the support slide rail. A pin shaft is installed in the left mounting seat, and the roller is installed on the pin shaft. One end of the pin shaft far from the left mounting seat is connected with a pin shaft mounting block. A rectangular cross-section insertion groove that is adapted to the pin shaft mounting block is provided on the side wall of the cavity of the right mounting seat. A guiding section is provided at one end of the pin shaft mounting block facing the insertion groove. A cavity adapted to the guiding section is provided in the insertion groove.

[0020] In some embodiments, an "L"-shaped support plate is further installed below the left mounting seat and the right mounting seat. The lower part of the support plate is used to contact the bottom plate.

[0021] In some embodiments, a driving motor is installed on the right mounting seat. A driving gear is installed on the output shaft of the driving motor. A rack meshing with the driving gear is installed on the support slide rail.

[0022] In some embodiments, a driving mechanism is installed on the right mounting seat. A end plate is installed at the lower end of the driving mechanism. A hoop adapted to the support slide rail is connected below the end plate. When the driving mechanism drives the end plate to move upward, the hoop can squeeze at least one surface of the support slide rail. The output shaft of the driving motor is fixedly connected to an intermediate shaft through a coupling. A blind hole is provided in the middle of the intermediate shaft. The driving gear is connected with a driven shaft. One end of the driven shaft can extend into the blind hole and be adapted to the blind hole. A middle bearing seat is sleeved on the periphery of the driven shaft. The bearing seat is installed on the hoop. The action stroke of the hoop under the driving of the driving mechanism is adapted to the thickness of the driving gear.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] For the assembled dynamic compaction structure for subgrade dynamic compaction of the present invention, when a large dynamic compactor cannot enter the construction site and a small dynamic compactor cannot meet the dynamic compaction requirements at the construction site, by using the assembled dynamic compaction structure of the present invention, it can be assembled at the construction site to perform dynamic compaction on the subgrade, meeting the requirements of subgrade dynamic compaction.

[0025] Meanwhile, when the assembled dynamic compaction structure of the present invention is performing dynamic compaction, the linear module on the cross beam drives the installation block to slide. Therefore, the position of the installation block can be accurately controlled by the linear module, thereby controlling the falling position of the winch and the heavy hammer, so that the falling position of the heavy hammer can accurately match the designed position. Compared with the prior art that relies on the driving experience of the driver of the crawler type dynamic compactor, the present invention can further improve the quality of dynamic compaction.

[0026] When the assembled dynamic compaction structure of the present invention is performing dynamic compaction, through the design of the assembled gantry structure, the gantry of different heights can be assembled according to the on-site construction requirements, so as to meet the dynamic compaction requirements of each construction site and improve the applicability of the construction site of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic perspective view of an embodiment of the present invention;

[0028] Figure 2 is a schematic structural view of an embodiment of the connection between the installation block and the sliding rod of the present invention;

[0029] Figure 3 is a schematic structural view of an embodiment of the assembled component of the present invention;

[0030] Figure 4 is a schematic structural view of an embodiment of the connection between the left mounting seat, the right mounting seat and the support slide rail of the present invention;

[0031] Figure 5 is a schematic structural view of the cooperation between the hoop and the support slide rail of the present invention. In this schematic view, the hoop is in the initial position and does not contact the bottom of the support slide rail;

[0032] Figure 6 is a schematic structural view of another state of the cooperation between the hoop and the support slide rail of the present invention. In this schematic view, the hoop contacts the support slide rail under the driving action of the driving mechanism and squeezes the support slide rail upward;

[0033] Figure 7 is a schematic structural view of the meshing between the rack and the gear on the support slide rail of the present invention;

[0034] Markings in the figure: 101, bottom plate; 102, support slide rail; 103, connecting beam; 104, pull rod; 105, rack; 106, support plate; 21, mounting base; 211, left mounting seat; 212, right mounting seat; 213, mounting groove; 214, pin shaft; 215, pin shaft mounting block; 216, guiding section; 217, insertion groove; 218, spring; 219, end plate; 2110, hoop; 2111, cross plate; 2112, vertical plate; 2113, intermediate shaft; 2114, blind hole; 2115, driven shaft; 2116, bearing seat; 2117, driving gear; 2118, driving mechanism; 22, assembled component; 23, cross beam; 231, sliding rod; 232, roller; 233, mounting block; 234, mounting plate; 235, ball screw; 236, screw nut; 3, winch. Embodiment

[0035] The present invention will be further described below in conjunction with embodiments. The described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0037] Combined with the attached Figure 1 to the attached Figure 7 , the assembled dynamic compaction structure for subgrade dynamic compaction of the present invention includes:

[0038] Two mutually parallel support slide rails 102, which are used to be placed on the soil body and serve as the support of the whole structure. A bottom plate 101 is connected below the support slide rail 101; the bottom plate 101 is used to increase the bottom contact area of the support slide rail, thereby improving the stability of the support slide rail. In fact, the backfill soil is transported by trucks, and then leveled by loaders or excavators. After being rolled by trucks, loaders and excavators, the surface strength of the soil body can basically reach a certain level. Therefore, the stability of the support slide rail 102 can be ensured through the action of the bottom plate 101. Preferably, the support slide rail in the present invention can directly utilize the existing I-shaped steel rails.

[0039] A connecting beam 103, which is used to connect the two support slide rails 102 together to form a whole; the connecting beam 103 is used to connect the support slide rails 102 together, thereby forming a stable frame structure. In the specific implementation process, the number of the connecting beams 103 is at least two, so as to form a stable structure. Preferably, a tie rod 104 is also connected between the connecting beams 103, and the tie rod is connected between the connecting beams in the shapes of triangles, cross shapes, etc., further improving the structural stability.

[0040] Among them, the positions of the connecting beam 103 and the tie rod 104 should not affect the normal operation of the assembled gantry. For example, the connecting beam 103 is connected to the ends of the two support slide rails 102, or for another example, the connecting beam 103 is connected to the bottom plate 101. Of course, the position of the connecting beam can also be adjusted according to the position of the assembled gantry on the support slide rail or the number of connecting beams can be increased. Those skilled in the art can understand and comprehend this, and will not be elaborated here.

[0041] An assembled gantry, which includes a cross beam 23 and a spliced vertical beam. The vertical beam is installed on the two support slide rails 102. The two ends of the cross beam 23 are respectively connected to the top of the vertical beam, and a sliding rod 231 is installed below the cross beam 23.

[0042] A winch 3, which is installed on the sliding rod 231 and used to drive a heavy hammer to move up and down to perform dynamic compaction on the roadbed. That is to say, the winch 3 is installed on the sliding rod 231, and the sliding rod 231 is used to drive the winch 3 to move left and right on the cross beam 23, so as to facilitate the adjustment of the position of the winch 3, and further adjust the position of the heavy hammer hung on the winch 3. The position where the heavy hammer falls is confirmed by the position of the winch on the sliding rod, and finally the heavy hammer can fall along the specified position to perform dynamic compaction, so as to improve the quality of dynamic compaction (especially point compaction). Among them, the heavy hammer is a prior art product, and those skilled in the art can understand and comprehend this. Therefore, in the Figure 1 schematic diagram attached, the heavy hammer equipped on the winch 3 is not shown.

[0043] Combined with the attached Figure 1 and the attached Figure 2, in some embodiments, several rollers 232 are mounted on the top of the cross beam 23 through a distribution shaft. An installation block 233 is sleeved on the sliding rod 231. A through hole adapted to the sliding rod 231 is provided on the installation block 233. Installation plates 234 in an "L" shape are installed on both sides of the installation block 233. One end of the installation plate 234 contacts the roller 232. One end of the installation plate 234 is fixedly connected to the installation block 233. The winch 3 is installed below the installation block 233. Among them, through the design of the roller 232, it is convenient to reduce the friction between the installation block 233 and the winch 3 on the installation block during movement and the cross beam. Among them, a locking screw is also connected between the two installation plates 234, and the installation plates 234 on both sides of the sliding block are fastened together through the locking screw to ensure the firm connection of the installation plates.

[0044] In the specific implementation process, the sliding rod can be made of materials such as square steel, I-beam, round steel, etc., so that the sliding rod 231 can not only play the role of guiding the sliding of the installation block 233, but also support the installation block 233, the winch 3 below the installation block 233, and the weight provided on the winch 3. Through the cooperation of the installation plate 234 and the roller 232 in the present invention, the main supporting role is played (that is, bearing the weight of the installation block, the winch, and the weight provided on the winch).

[0045] Combined with the attached Figure 1 and the attached Figure 2 , in some embodiments, a linear module for driving the installation block 233 to slide on the sliding rod 231 is installed on the cross beam 23. The installation block is driven to slide on the sliding rod through the linear module. Among them, the linear module is a relatively conventional mechanical structure in the field, and those skilled in the art can understand and comprehend. The linear module mainly includes a motor, a ball screw 235, and a lead screw nut 236. The lead screw nut 236 is sleeved on the ball screw 235. When the motor drives the ball screw 235 to rotate, it drives the lead screw nut 236 to slide on the ball screw 235. In the specific implementation process, the ball screw 235 of the present invention is installed between the cross beam 23 and the installation block 233, and the lead screw nut 236 is connected to the installation block 233, thereby driving the installation block 233 to slide on the sliding rod 231. And the present invention arranges the ball screw 235 between the cross beam 231 and the installation block 233, and protects the ball screw 235 through the mutual shielding effect between the cross beam and the installation block.

[0046] In the specific implementation process, in order to improve the running stability of the installation block 233 on the sliding rod 231, the number of sliding rods 231 is at least 2.

[0047] Combined with the attached Figure 1 , the attached Figure 3 and the attachedFigure 4 In some embodiments, the vertical beam includes a mounting base 21 and an assembled component 22. A mounting groove 213 is provided at the lower part of the mounting base 21. A plurality of rollers 232 are installed at the inner top of the mounting groove 213. The mounting groove 213 cooperates with the support slide rail 102 such that the top surface of the support slide rail 102 contacts the rollers 232. The rollers are used to reduce the friction when the vertical beam moves on the support slide rail.

[0048] Combined with the attached Figure 3 FIG. is a schematic structural diagram of an embodiment of the assembled component 22 of the present invention. The assembled component 22 is used as a component for vertical height adjustment and is a relatively common structure in the mechanical field, which will not be elaborated here.

[0049] Combined with the attached Figure 1 and the attached Figure 4 In some embodiments, the mounting base 21 includes a left mounting seat 211 and a right mounting seat 212 that are integrally in a "concave" shape. The left mounting seat 211 and the right mounting seat 212 are connected to each other by bolts. The cavities of the left mounting seat 211 and the right mounting seat 212 together form a mounting groove 213 that cooperates with the support slide rail 102. A pin shaft 214 is installed in the left mounting seat 211, and the roller 232 is installed on the pin shaft 214. One end of the pin shaft 214 away from the inside of the left mounting seat 211 is connected to a pin shaft mounting block 215. An insertion groove 217 with a rectangular cross-section and adapted to the pin shaft mounting block 215 is provided on the side wall of the cavity of the right mounting seat 212. A guiding section 216 is provided at one end of the pin shaft mounting block 215 facing the insertion groove. A cavity adapted to the guiding section 216 is provided in the insertion groove 217. During the specific implementation process, the length and width of the guiding section 215 gradually decrease along the direction towards the right mounting seat 212, so as to play a guiding role to insert the pin shaft mounting block 215 into the insertion groove 217. The axially of the pin shaft mounting block 215 is positioned by the insertion groove 217 with a rectangular cross-section, so that both ends of the pin shaft are firmly fixed in the left mounting seat 211 and the right mounting seat 212 respectively, realizing the installation of the pin shaft 214 and the roller 232. Correspondingly, the insertion groove has a cavity that matches the guiding section. Preferably, the guiding section is in the shape of a frustum of a pyramid, so that the guiding section matches the pin shaft mounting block with a rectangular cross-section, and the inside of the insertion groove has a cavity that is adapted to the frustum of the pyramid.

[0050] Among them, in some embodiments, the cavity is a part of the insertion groove 217; in some embodiments, the cavity and the insertion groove are two interconnected holes. Correspondingly, in some embodiments, the guiding section 216 is a part of the pin shaft mounting block 215; in some embodiments, the guiding section and the pin shaft mounting block are integrally formed after being connected.

[0051] In the specific real-time process, the left mounting seat and the right mounting seat on the two support slide rails 102 are connected by a pull rod 104, thereby further improving the structural stability.

[0052] In some embodiments, a spring 218 is installed at the inner bottom of the insertion groove 217. By providing the spring 218 at the inner bottom of the insertion groove 217 (i.e., the inner bottom of the cavity), when it is necessary to disassemble the left mounting seat and the right mounting seat, the pre-tightening force after the spring is compressed is used to apply a certain force to the left mounting seat and the right mounting seat, facilitating the separation of the left mounting seat and the right mounting seat.

[0053] In some embodiments, an "L"-shaped support plate 106 is further installed below the left mounting seat 211 and the right mounting seat 212, and the lower part of the support plate 106 is used to contact the bottom plate 101. By providing the support plate 106 on the left mounting seat and the right mounting seat, the contact between the support plate 103 and the bottom plate 101 is used to improve the stability of the mounting base 21 and prevent tilting and collapse. In the specific real-time process, when the assembled gantry is in normal use, there is a gap between the bottom surface of the support plate and the bottom plate, and this gap is controlled between 0 - 5 mm. When the assembled gantry shakes and tilts, the contact between the support plate 106 and the bottom plate 102 is used to resist the shaking of the assembled gantry.

[0054] Preferably, in order to reduce the wear of the bottom plate 101 and the support plate 106, a hard wear-resistant rubber pad is laid on the lower end surface of the support plate 106 and the area on the bottom plate 101 that contacts the lower end surface of the support plate.

[0055] Combined with attached Figure 1 、attached Figure 5 to attached Figure 7 , in some embodiments, a driving motor (the driving motor is a prior art product and is not shown) is installed on the right mounting seat 212, a driving gear 2117 is installed on the output shaft of the driving motor, and a rack 105 meshing with the driving gear 2117 is installed on the support slide rail 102. By driving the driving gear 2117 to rotate through the driving motor (a speed reducer is connected to the output shaft of the driving motor, and the speed reducer is then connected to the driving gear), the mutual meshing of the driving gear 2117 and the rack 105 converts the rotational motion into a linear motion, thereby driving the entire assembled gantry to slide on the support slide rail 102. Among them, in order to facilitate the driving of the assembled gantry, driving motors are provided on the right mounting seats 212 at both ends of the assembled gantry, and racks meshing with the driving gears 2117 are installed on both support slide rails 102. In the specific operation process, the models of the two driving motors should be the same, and the two driving motors are controlled to work simultaneously, so that the assembled gantry on the support slide rail moves synchronously.

[0056] At the construction site, the assembled gantry can also be directly driven by jacks and hydraulic cylinders to move on the supporting slide rails.

[0057] In some embodiments, a driving mechanism 2118 is installed on the right mounting seat 212, and an end plate 219 is installed at the lower end of the driving mechanism 2118. A clamp 2110 that is compatible with the support rail 102 is connected to the lower side of the end plate 219. When the driving mechanism 2118 drives the end plate 219 to move upward, the clamp 2110 can squeeze at least one surface of the support rail 102; the output shaft of the driving motor is fixedly connected to the intermediate shaft 2113 via a coupling, and the intermediate shaft 2113 is fixedly connected to the output shaft of the driving motor via a coupling. A blind hole 2114 is provided in the middle of the intermediate shaft 2113, and the driving gear 2117 is connected to a driven shaft 2116, one end of which can extend into the blind hole 211 and fit with the blind hole 2114; a middle bearing seat 2116 is provided on the outer sleeve of the driven shaft 2116, and the bearing seat 2116 is installed on the clamp 2110; the action stroke of the clamp 2110 under the driving action of the driving mechanism 2118 is matched with the thickness of the driving gear 2117. The supporting slide rail of the present invention preferably uses an I-shaped rail, and the hoop can cooperate with the rail head of the rail. When the driving mechanism drives the hoop to move upward, the hoop is tightly fitted with the lower end of the rail head of the rail, further improving the stability between the assembled gantry and the supporting rail. At the same time, the hoop can also play a role in braking and deceleration; and when the hoop moves upward under the driving action of the driving mechanism, the hoop can also drive the driven shaft to move upward, thereby separating the driving gear and the rack from each other, preventing the driving gear and the rack from being damaged due to shaking during the operation of the assembled gantry, thereby increasing the service life of the driving gear and the rack; at the same time, the supporting slide rail can also be cleaned through the action of the hoop, and the debris on the supporting slide rail can be cleaned.

[0058] In the specific real-time process, the clamp 2110 includes a left clamp and a right clamp in the shape of a "concave" character, and the left clamp and the right clamp form a cavity that matches the shape of the rail head of the I-shaped support rail 102. Specifically, the left clamp and the right clamp include two horizontal plates 2111 and a vertical plate 2112. The two horizontal plates 2111 are respectively connected to the upper end and the lower end of the vertical plate 2112. The two horizontal plates and the vertical plate form a side-standing "concave" structure. When the driving mechanism 2118 is in the initial position, the horizontal plate 2111 above the vertical plate 2112 just contacts the rail head of the support rail 102, and the vertical plate contacts the side wall of the rail head, so that the upper horizontal plate 211 is used to clean the rail head to prevent debris from entering the mounting base, thereby improving the practicality of the present invention. Therefore, the clamp of the present invention has three functions at the same time.

[0059] Among them, the driving mechanism 2118 can be common devices such as a linear module, a cylinder, a hydraulic cylinder, etc., which can be understood and comprehended by those skilled in the art, and will not be elaborated herein.

[0060] Combined with the attached Figure 7 , preferably, a spring 218 is arranged in the blind hole 2114 of the intermediate shaft 2113, and the pre-tightening force of the spring 218 enables the driving gear 2117 on the driven shaft 2115 to mesh with the rack 105; when the driving mechanism 2118 drives the hoop 2110 to move upward, the hoop 2110 synchronously drives the driven shaft 2115 to slide into the blind hole 2114 in the intermediate shaft 2113, so that the driving gear 2117 is separated from the rack 105.

[0061] Among them, when the present invention is in use, each component can be assembled on site, and after assembly, the dynamic compaction operation can be carried out. When it is necessary to move the entire dynamic compaction structure, the overall handling can be achieved by using a small crane (or the handling can be carried out after partial disassembly).

[0062] For the assembled dynamic compaction structure for subgrade dynamic compaction of the present invention, when a large dynamic compactor cannot enter the construction site and a small dynamic compactor cannot meet the dynamic compaction requirements at the construction site, by using the assembled dynamic compaction structure of the present invention, the assembly can be carried out at the construction site to perform dynamic compaction on the subgrade, meeting the requirements of subgrade dynamic compaction.

[0063] At the same time, when the assembled dynamic compaction structure of the present invention is performing dynamic compaction, the linear module on the cross beam drives the installation block to slide. Therefore, the position of the installation block can be accurately controlled by the linear module, thereby controlling the falling position of the winch and the heavy hammer, so that the falling position of the heavy hammer can accurately match the designed position. Compared with the prior art that relies on the operation experience of the driver of the crawler dynamic compactor, the present invention can further improve the quality of dynamic compaction.

[0064] When the assembled dynamic compaction structure of the present invention is performing dynamic compaction, through the design of the assembled gantry structure, the gantry can be assembled into different heights according to the on-site construction requirements, so as to meet the dynamic compaction requirements of each construction site and improve the applicability of the construction site of the present invention.

Claims

1. An assembled dynamic compaction structure for subgrade dynamic compaction, characterized in that, it includes: Two mutually parallel support slide rails, which are used to be placed on the soil body and serve as the support of the whole structure. A bottom plate is connected below the support slide rails; A connecting beam, which is used to connect the two support slide rails together to form a whole; An assembled gantry, including a cross beam and spliced vertical beams. The vertical beams are installed on the two support slide rails. The two ends of the cross beam are respectively connected to the tops of the vertical beams. A sliding rod is installed below the cross beam; the bottom of the vertical beam has an installation base, and the installation base includes a left installation seat and a right installation seat that are overall in a "concave" shape; a driving motor is installed on the right installation seat; a driving mechanism is installed on the right installation seat, and a end plate is installed at the lower end of the driving mechanism. A hoop that is mutually adapted to the support slide rail is connected below the end plate. When the driving mechanism drives the end plate to move upward, the hoop can squeeze at least one surface of the support slide rail; the output shaft of the driving motor is fixedly connected to an intermediate shaft through a coupling. A blind hole is provided in the middle of the intermediate shaft. The driving gear is connected to a driven shaft, and one end of the driven shaft can extend into the blind hole and be mutually adapted to the blind hole; a middle bearing seat is sleeved on the periphery of the driven shaft, and the bearing seat is installed on the hoop; the action stroke of the hoop driven by the driving mechanism is mutually adapted to the thickness of the driving gear; A winch, which is installed on the sliding rod and is used to drive the heavy hammer to move up and down to compact the subgrade.

2. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 1, characterized in that, A plurality of rollers are installed on the top of the cross beam through a spindle. An installation block is sleeved on the sliding rod. A through hole that is mutually adapted to the sliding rod is provided on the installation block. Installation plates in an "L" shape are installed on both sides of the installation block. One end of the installation plate contacts the roller, and one end of the installation plate is fixedly connected to the installation block. The winch is installed below the installation block.

3. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 2, characterized in that, A linear module for driving the installation block to slide on the sliding rod is installed on the cross beam.

4. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 1, characterized in that, An installation groove is provided at the lower part of the installation base. A plurality of rollers are installed on the inner top of the installation groove. The installation groove is mutually matched with the support slide rail and makes the top surface of the support slide rail contact the rollers.

5. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 1, characterized in that, The left mounting seat and the right mounting seat are connected to each other by bolts. The cavities of the left mounting seat and the right mounting seat together form a mounting groove that cooperates with the support slide rail. A pin shaft is installed in the left mounting seat, a roller is installed on the pin shaft, and a pin shaft mounting block is connected to one end of the pin shaft away from the left mounting seat. A rectangular cross-section insertion groove that is adapted to the pin shaft mounting block is provided on the side wall of the cavity of the right mounting seat. A guiding section is provided at one end of the pin shaft mounting block facing the insertion groove, and a cavity adapted to the guiding section is provided in the insertion groove.

6. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 5, characterized in that an "L"-shaped support plate is further installed below the left mounting seat and the right mounting seat, and the lower part of the support plate is used to contact the bottom plate.

7. The assembled dynamic compaction structure for subgrade dynamic compaction according to claim 1, characterized in that a driving gear is installed on the output shaft of the driving motor, and a rack meshing with the driving gear is installed on the support slide rail.

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