A guide device for a pile driver used in road construction

Abstract

The present invention discloses a guide device for a pile driver for road construction, which relates to the technical field of road construction. The guide device comprises a guide rail, a support and guide mechanism, and a hydraulic hammer. The guide rail is mounted on one side of a construction vehicle via a fixed rod and is maintained perpendicular to the ground via a hydraulic connecting rod provided on the construction vehicle. The hydraulic hammer is slidably mounted on the guide rail via a hydraulic connecting rod, and the extension direction of the hammer head of the hydraulic hammer is parallel to the length direction of the guide rail. The support and guide mechanism is disposed between the construction vehicle and the hydraulic hammer, and comprises a hydraulic cylinder, an articulated connecting rod, and a guide wheel assembly. The hydraulic cylinder is mounted at the bottom of the guide rail, the articulated connecting rod is disposed at the output end of the hydraulic cylinder, and the guide wheel assembly is disposed between the hydraulic cylinder and the ground via the articulated connecting rod. The guide device for a pile driver for road construction provided by the present invention adds a new support point between the hydraulic hammer and the construction vehicle, which can reduce the occurrence of the pile driver causing the vehicle to flip, shorten the piling time, and improve the piling efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, in particular to a pile driver guide device for road construction. Background Art

[0002] The highway guardrail pile driver in the prior art is installed on one side of a construction vehicle. When the pile driver is working, the pile barrel generates a reaction force on the pile driver, which can easily lift the vehicle. After the vehicle is lifted up, the vehicle body will tilt, and the guide device installed on the vehicle body will also tilt accordingly, which can easily cause the pile driving body to deviate to the side, making it difficult for the pile driver to accurately drive the pile body.

[0003] Although the construction vehicle is equipped with a hydraulic connecting rod capable of adjusting the angle of the pile driver's guide device, the pile driver is easily affected by road conditions and road quality during pile driving, resulting in different reaction forces on the pile driver. Different reaction forces acting on the pile driver can easily cause different degrees of tilt and lift of the vehicle, which requires frequent adjustment of the angle between the guide device and the vehicle body to ensure that the pile driver always maintains the same axial direction as the pile body. Summary of the Invention

[0004] The present invention provides a pile driver guide device for road construction, which can add a new support point for the pile driver, so that the torque between the hydraulic hammer and the new support point is shorter, which can reduce the occurrence of vehicle overturning caused by the pile driver, shorten the pile driving time, and improve the pile driving efficiency.

[0005] The present invention provides a guide device for a pile driver for road construction using the following technical solutions:

[0006] A guide device for a pile driver for road construction comprises a guide rail, a support guide mechanism and a hydraulic hammer, wherein the guide rail is mounted on one side of a construction vehicle via a fixing rod and is kept perpendicular to the ground via a hydraulic connecting rod provided on the construction vehicle; the support guide mechanism comprises a hydraulic cylinder, an articulated connecting rod and a guide wheel group, wherein the hydraulic cylinder is mounted at the bottom of the guide rail, the articulated connecting rod is provided at the output end of the hydraulic cylinder, and the guide wheel group is provided between the hydraulic cylinder and the ground via the articulated connecting rod; the guide wheel group comprises a first wheel group and a second wheel group, wherein the first wheel group and the second wheel group are provided at the bottom of the hydraulic cylinder via the articulated connecting rod; The first wheel group includes a first wheel axle, a first wheel body and a first driven wheel, the first wheel axle is fixedly connected to the hinged connecting rod, the first wheel body and the first driven wheel are both rotatably mounted on the first wheel axle, and are both coaxially arranged with the first wheel axle; the second wheel group includes a second wheel axle, a second wheel body and a second driven wheel, the second wheel axle is movably connected to the hinged connecting rod, the second wheel body and the first driven wheel are both rotatably arranged on the second wheel axle, and are both coaxially arranged with the second wheel axle; the hydraulic hammer is slidably arranged on the guide rail through a hydraulic connecting rod, and the extending direction of the hammer head of the hydraulic hammer is parallel to the length direction of the guide rail.

[0007] Furthermore, the articulated link includes an articulated rod and a limiting rod, the articulated rod includes a first articulated rod and a second articulated rod, a slider is slidably provided on the output shaft of the hydraulic cylinder, one end of the first articulated rod and the second articulated rod are respectively hinged to the two ends of the slider, and the other ends of the first articulated rod and the second articulated rod are respectively connected to the first wheel axle through a fixing member and movably connected to the second wheel axle through an elastic clamping assembly;

[0008] The limiting rod includes a first limiting rod and a second limiting rod, one end of the first limiting rod and the second limiting rod are respectively hinged on both sides of the output shaft of the hydraulic cylinder, and the other ends of the first limiting rod and the second limiting rod are respectively hinged to the first wheel axle and movably connected to the second wheel axle.

[0009] Furthermore, the second hinged rod and the second limiting rod are both broken-line rods, and are both bent toward a side close to the construction vehicle.

[0010] Furthermore, the fixing member includes a fixing groove and a fixing key, the fixing groove is formed on the inner wall of the mounting hole of the first hinge rod and the first axle, the fixing key is fixed on the first axle, and the fixing key is adapted to the fixing groove.

[0011] Furthermore, the elastic snap-fit ​​assembly includes a slot and an elastic snap-fit ​​piece, the slot is opened on the inner wall of the mounting hole of the second hinged rod and the second wheel axle, the elastic snap-fit ​​piece is installed on the second wheel axle, the elastic snap-fit ​​piece is adapted to the slot, and the engagement of the elastic snap-fit ​​piece with the slot can realize the fixation of the second wheel axle on the second hinged rod, and the disengagement of the elastic snap-fit ​​piece from the slot can realize the sliding and rotation of the second wheel axle on the second hinged rod.

[0012] Furthermore, the first wheel body includes a first disc wheel, a second disc wheel and a first spacer cylinder, the cross-sectional radius of the first spacer cylinder is smaller than the cross-sectional radius of the first disc wheel and the second disc wheel, the first spacer cylinder is rotatably arranged between the first disc wheel and the second disc wheel, and a first angular displacement sensor is installed on the first wheel shaft. When the first spacer cylinder rotates relative to the first disc wheel, the number of rotations of the first spacer cylinder can be measured by the first angular displacement sensor.

[0013] Furthermore, a mounting groove is provided in the first driven wheel, and a second angular displacement sensor is mounted on the first wheel axle, so that the number of revolutions of the first driven wheel can be measured by the second angular displacement sensor.

[0014] Furthermore, the second wheel body includes a third wheel, a fourth wheel and a second spacer cylinder, the cross-sectional radius of the second spacer cylinder is smaller than the cross-sectional radius of the third wheel and the fourth wheel, and the second spacer cylinder is rotatably arranged between the third wheel and the fourth wheel.

[0015] Furthermore, the first wheel, the second wheel, the first driven wheel, the third wheel, the fourth wheel and the second driven wheel are all rigid wheels.

[0016] The beneficial effects of the present invention are:

[0017] A guide device for a road construction pile driver is provided on one side of a construction vehicle used with existing guardrail pile drivers. A hydraulic connecting rod on the construction vehicle maintains the guide rail perpendicular to the ground. A hydraulic cylinder at the bottom of the guide rail drives a guide wheel assembly against the ground, aligning the hammer head of a hydraulic hammer with the pile to be driven. When the hydraulic hammer strikes the pile, it experiences a reaction force. This reaction force should normally be transmitted to the construction vehicle. However, in the present invention, a guide wheel assembly is provided between the hydraulic hammer and the construction vehicle, which is equivalent to adding a new support point between the hydraulic hammer and the construction vehicle. This support point is closer to the hydraulic hammer, shortening the distance between the hydraulic hammer and the guide wheel assembly serving as the new support point and reducing the torque. To lift the construction vehicle again, the hydraulic hammer must apply a much greater hammering force to the pile than would be the case without the support guide mechanism. This significantly reduces the possibility of the construction vehicle tilting or tilting. Furthermore, the guide rail of the present invention is less likely to tilt, resulting in more stable pile driving with the hydraulic hammer. This eliminates the need for additional time spent on guide rail adjustment, reducing pile driving time and improving pile driving efficiency.

[0018] Furthermore, the first wheel body and the second wheel body in the guide wheel assembly can position the pile to be driven, thereby preventing the pile from tilting during the piling process, and making the piling of the present invention more stable.

[0019] Furthermore, the first spacer cylinder in the first wheel body and the second spacer cylinder in the second wheel body are against both sides of the pile column. When the hydraulic hammer is driving the pile, the first spacer cylinder can rotate according to the downward movement of the pile column. The first angular displacement sensor arranged on the first wheel axle can measure the depth of the pile driving according to the number of rotations of the first spacer cylinder. The construction workers no longer need to spend extra time to measure the pile driving depth, thereby improving the efficiency of the pile driving.

[0020] Furthermore, when the first driven wheel in the first wheel body moves along the travel path of the present invention, the second angular displacement sensor installed on the first wheel axle can measure the travel distance according to the number of rotations of the first driven wheel. The position of the next piling can be easily located by limiting the number of rotations of the first driven wheel. There is no need for construction workers to spend time measuring the distance between pile columns, which can also improve the efficiency of piling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1A schematic structural diagram of a guide device of a pile driver for road construction provided by an embodiment of the present invention, which is arranged on a hydraulic connecting rod;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a guide device for a pile driver for road construction provided by an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a support and guide mechanism of a guide device for a pile driver for road construction provided by an embodiment of the present invention;

[0025] Figure 4 A more specific structural diagram of a support and guide mechanism of a guide device for a pile driver for road construction provided by an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A;

[0027] Figure 6 A side view of a support and guide mechanism of a guide device for a pile driver for road construction provided by an embodiment of the present invention;

[0028] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0029] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part C.

[0030] In the figure: 100, guide rail; 101, fixed rod; 102, hydraulic connecting rod; 200, support guide mechanism; 210, hydraulic cylinder; 220, articulated connecting rod; 211, sliding rod; 2210, articulated rod; 2211, first articulated rod; 2212, second articulated rod; 2220, limiting rod; 2221, first limiting rod; 2222, second limiting rod; 230, guide wheel group; 300, hydraulic hammer; 310, first wheel group; 311, first wheel shaft; 312, first wheel body; 3121, first wheel; 3122, second wheel; 31 23. First spacer cylinder; 313. First driven wheel; 320. Second wheel assembly; 321. Second wheel axle; 322. Second wheel body; 3221. Third disc wheel; 3222. Fourth disc wheel; 3223. Second spacer cylinder; 323. Second driven wheel; 410. Fixing member; 411. Fixing groove; 412. Fixing key; 420. Elastic snap-fit ​​assembly; 421. Clip groove; 422. Elastic snap-fit ​​member; 4221. Protruding ball; 4222. Compression spring; 710. First angular displacement sensor; 720. Second angular displacement sensor; 3131. Mounting groove. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a guide device for a pile driver for road construction, including a guide rail 100, a support guide mechanism 200, and a hydraulic hammer 300. The guide rail 100 is mounted on one side of a construction vehicle via a fixing rod 101 and is maintained perpendicular to the ground via a hydraulic connecting rod 102 provided on the construction vehicle. The construction vehicle can be a vehicle that is compatible with an existing guardrail pile driver. The fixing rod 101 is fixed to the construction vehicle, and one end thereof connected to the guide rail 100 is hinged. The hydraulic connecting rod 102 is also a hydraulic connecting rod 102 that is compatible with existing guardrail pile drivers. The hydraulic connecting rod 102 is hinged to the guide rail 100 and can adjust the guide rail 100 to be perpendicular to the ground, thereby achieving a better pile driving effect.

[0035] The support and guide mechanism 200 is used to prop up the construction vehicle, providing a new support point between the construction vehicle and the hydraulic hammer 300. The support and guide mechanism 200 comprises a hydraulic cylinder 210, an articulated link 220, and a guide wheel assembly 230. The hydraulic cylinder 210 is mounted at the bottom of the guide rail 100, with its length parallel to the length of the guide rail 100. The articulated link 220 is located at the output end of the hydraulic cylinder 210, and the guide wheel assembly 230 is positioned between the hydraulic cylinder 210 and the ground via the articulated link 220. The guide rail 100 is adjusted perpendicular to the ground via the hydraulic link 102, and then the hydraulic cylinder 210 is activated. The output end of the hydraulic cylinder 210 drives the guide wheel assembly 230 via the articulated link 220, supporting the construction vehicle. The hydraulic hammer 300 is slidably mounted on the guide rail 100 via the hydraulic link 102, with the hammer head of the hydraulic hammer 300 extending parallel to the length of the guide rail 100.

[0036] The operating principle of the present invention is:

[0037] First, the present invention is set on one side of a construction vehicle that is matched with an existing guardrail pile driver, and then the guide rail 100 is installed on the fixed rod 101 fixed on the construction vehicle, and the guide rail 100 is hinged to the hydraulic connecting rod 102 set on the construction vehicle, and then the guide rail 100 is kept perpendicular to the ground by controlling the hydraulic connecting rod 102, and then the guide rail 100 is moved to the vicinity of the pile column that needs to be driven into the ground by the construction vehicle, and then the hydraulic cylinder 210 is started, and the output end of the hydraulic cylinder 210 drives the guide wheel group 230 to rest on the ground through the hinged connecting rod 220. The hydraulic cylinder 210 does not need to lift the construction vehicle through the guide wheel group 230, and only needs to keep the guide wheel group 230 in contact with the ground. Then, the position of the hydraulic hammer 300 on the guide rail 100 is adjusted by the hydraulic connecting rod 102, and the hammer head of the hydraulic hammer 300 is aligned with the end of the pile column to be driven away from the ground, and then the hydraulic hammer 300 is started, and the hammer head of the hydraulic hammer 300 hammers the pile column into the ground;

[0038] Under the hammering of the hydraulic hammer 300, the pile is driven into the ground. Since the guide wheel group 230 is equivalent to adding a new support point between the construction vehicle and the hydraulic hammer 300, the movement of the hydraulic hammer 300 hammering the pile to cause the construction vehicle or the guide wheel group 230 to tilt can be approximated as a lever movement. Among them, in the existing guardrail pile driver, the side of the vehicle close to the hydraulic hammer 300 is equivalent to the fulcrum, and the distance between the projection of the hydraulic hammer 300 on the ground and the vehicle is equivalent to the torque. In the present invention, since the guide wheel group 230 is added between the vehicle and the hydraulic hammer 300 as a new support point, it is equivalent to moving the original fulcrum closer to the hydraulic hammer 300. In the present invention, the torque of the hydraulic hammer 300 is greatly reduced. If the guide wheel group 230 serving as a new support is to be tilted, the hammering force applied by the hydraulic hammer 300 to the pile column is much greater than the hammering force when the vehicle is used as a support. Therefore, the present invention can keep the positions of the guide rail 100 and the guide wheel group 230 unchanged as much as possible during piling. The hydraulic hammer 300 is not likely to deviate from the pile column, so that the hydraulic hammer 300 is always aligned with the pile column during piling, which is more conducive to the smooth progress of piling, thereby shortening the piling time and improving the piling efficiency.

[0039] In some embodiments, as Figures 2 to 4 As shown, the guide wheel assembly 230 includes a first wheel assembly 310 and a second wheel assembly 320, which are arranged at the bottom of the hydraulic cylinder 210 via the hinged connecting rod 220. The first wheel assembly 310 includes a first wheel axle 311, a first wheel body 312, and a first driven wheel 313. The first wheel axle 311 is fixedly connected to the bottom of the hinged connecting rod 220. The first wheel body 312 and the first driven wheel 313 are both rotatably mounted on the first wheel axle 311 via bearings. The first wheel body 312 and the first driven wheel 313 are respectively located near the ends of the first wheel axle 311 and are coaxially arranged with the first wheel axle 311. The axial direction of the first wheel axle 311 is perpendicular to the direction of travel of the present invention and the direction of extension and retraction of the hydraulic cylinder 210 of the present invention.

[0040] In this embodiment, the second wheel assembly 320 includes a second axle 321, a second wheel body 322, and a second driven wheel 323. The second axle 321 is movably connected to the bottom end of the hinged link 220. The second wheel body 322 and the second driven wheel 323 are both rotatably mounted on the second axle 321 via bearings. The second wheel body 322 and the second driven wheel 323 are respectively located near the ends of the second axle 321. The second wheel body 322 and the second driven wheel 323 are both coaxially arranged with the second axle 321, and the axial direction of the second axle 321 is parallel to the axial direction of the first axle 311.

[0041] The first wheel 312 and the second wheel 322 can be pressed against the ground under the action of the hydraulic cylinder 210. Furthermore, in the direction of travel of the present invention, the first wheel 312 and the second wheel 322 can be positioned on the front and rear sides of the pile, thereby adding a new support point between the construction vehicle and the hydraulic hammer 300, and bringing the hydraulic hammer 300 closer to the new support point. Compared to the prior art, the present invention has a shorter torque. To deflect or roll over the guide rail 100 or the construction vehicle equipped with the present invention, the hydraulic hammer 300 needs to apply a greater hammering force to the pile, significantly increasing the difficulty of deflecting the guide rail 100 and reducing the risk of the pile driver causing the vehicle to flip. This makes piling more stable and improves piling efficiency.

[0042] In addition, the first wheel body 312 and the second wheel body 322 can also position the pile to be driven, thereby reducing the occurrence of the pile being tilted during the driving process and further improving the stability of the driving.

[0043] In some embodiments, as Figures 4 to 8 As shown, the hinge link 220 includes a hinge rod 2210 and a limiting rod 2220 .

[0044] The hinged rod 2210 includes a first hinged rod 2211 and a second hinged rod 2212. The output shaft of the hydraulic cylinder 210 extends out of the cylinder body and is slidably mounted on a slider, which is a rectangular block. The first hinged rod 2211 and the second hinged rod 2212 are hingedly connected to the slider at either end, and are symmetrically arranged on the slider about the output shaft of the hydraulic cylinder 210. The end of the first hinged rod 2211 away from the slider is fixedly connected to the first axle 311 via a fixing member 410, while the end of the second hinged rod 2212 away from the slider is movably connected to the second axle 321 via an elastic clamping assembly 420. The limiting rod 2220 includes a first limiting rod 2221 and a second limiting rod 2222. Both the first limiting rod 2221 and the second limiting rod 2222 are hingedly connected to the output shaft of the hydraulic cylinder 210. The first limiting rod 2221 and the second limiting rod 2222 are located on either side of the output shaft and are symmetrically arranged about the output shaft. One end of the first limiting rod 2221 away from the output shaft is hinged to the first wheel shaft 311 , and one end of the second limiting rod 2222 away from the output shaft is movably connected to the second wheel shaft 321 .

[0045] Of course, a coaxially arranged sliding rod 211 can also be fixedly connected to the output shaft of the hydraulic cylinder 210. The sliding rod 211 is parallel to the length of the guide rail 100 and the hydraulic cylinder 210. The end of the sliding rod 211 away from the hydraulic cylinder 210 faces between the first wheel assembly 310 and the second wheel assembly 320. Here, a slider is slidably arranged on the sliding rod 211. The slider has a sliding hole that is compatible with the sliding rod 211. The sliding rod 211 passes through the sliding hole, allowing the slider to slide on the sliding rod 211. In this case, the first hinged rod 2211 and the second hinged rod 2212 are symmetrically arranged with respect to the sliding rod 211. The end of the first limiting rod 2221 away from the first wheel axle 311 and the end of the second limiting rod 2222 away from the second wheel axle 321 are both hinged to the sliding rod 211, and the hinge positions are symmetrical with respect to the sliding rod 211.

[0046] In this embodiment, the hinge positions of the first hinged rod 2211 and the second hinged rod 2212 on the slider are symmetrical with respect to the slider 211. The hinge positions of the first limiting rod 2221 and the second limiting rod 2222 on the slider 211 are symmetrical with respect to the slider 211, and the hinge position of the first limiting rod 2221 and the slider 211 is located below the slider. When the slider 211 remains in position and the slider slides on the slider 211, the first hinged rod 2211 and the second hinged rod 2212 can respectively drive the first wheel axle 311 and the second wheel axle 321 toward or away from each other, thereby changing the distance between the first wheel body 312 and the second wheel body 322, making the present invention suitable for piling piles of various thicknesses.

[0047] The hinged position of the first and second limiting rods 2221, 2222 on the sliding rod 211 below the slider prevents the sliding rod 211 from contacting the ground before the first and second wheels 312, 322, thereby ensuring the normal operation of the present invention. The first and second limiting rods 2221, 2222 can limit the movement of the first and second hinged rods 2211, 2212 on the sliding rod 211, preventing the first and second wheels 312, 322 from losing contact with the ground, thereby ensuring that the first and second wheels 312, 322 can always serve as new support points for the pile driver.

[0048] In some embodiments, the second articulated rod 2212 and the second limiting rod 2222 are both broken-line rods and are both bent toward the side closer to the construction vehicle. Specifically, the second articulated rod 2212 includes a first support rod, a second support rod, and a first cross bar. The first support rod and the second support rod are arranged in a parallel and offset manner. The plane where the first support rod and the second support rod are located is perpendicular to the axial direction of the second wheel axle 321, and the length direction of the first cross bar is parallel to the axial direction of the second wheel axle 321. The second limiting rod 2222 may include a first limiting support rod, a second limiting support rod, and a second cross bar. The first limiting support rod and the second limiting support rod are arranged in a parallel and offset manner. The plane where the first limiting support rod and the second limiting support rod are located is perpendicular to the axial direction of the second wheel axle 321, and the length direction of the second cross bar is parallel to the axial direction of the second wheel axle 321.

[0049] In the direction parallel to the second wheel axle 321, the second hinged rod 2212 is closer to the second driven wheel 323 than the second limiting rod 2222, that is, the first support rod is located between the first limiting support rod and the second driven wheel 323, wherein the first cross bar is located above the second cross bar, and when the second hinged rod 2212 moves between the sliding rod 211 and the second wheel axle 321, it does not affect the movement of the second limiting rod 2222 between the sliding rod 211 and the second wheel axle 321.

[0050] In this embodiment, after the pile column between the first wheel body 312 and the second wheel body 322 is driven, the hydraulic cylinder 210 is started, so that the first wheel body 312 and the second wheel body 322 no longer contact the ground or only contact the ground, and then the second wheel body 322 is pushed in the direction parallel to the second wheel axle 321 toward the second driven wheel 323. The second wheel body 322 can drive the second wheel axle 321 to slide on the second hinge rod 2212 and the second limiting rod 2222, thereby changing the area corresponding to the second wheel body 322 and the first wheel body 312. When the second wheel body 322 no longer corresponds to the pile column, the present invention can be moved to a new position to be piled. After the first wheel body 312 moves to the new position to be piled, the second wheel body 322 is pushed again in the direction parallel to the second wheel axle 321 to a position opposite to the first wheel body 312, thereby realizing the repositioning of the pile column to be driven.

[0051] With the above operation, the first wheel body 312 can always be in contact with the ground, and the position of the pile to be driven can be repositioned according to the distance and path of the first wheel body 312 moving on the ground, which greatly reduces the time consumed in repositioning the position of the pile column to be driven. At the same time, the piling route can be prevented from going astray according to the travel path of the first wheel body 312, thereby improving the piling efficiency of the present invention.

[0052] In some embodiments, the fixing member 410 includes a fixing slot 411 defined in the first hinge rod 2211 and a fixing key 412 secured to the first axle 311. The fixing slot 411 is defined on the inner wall of the mounting hole between the first hinge rod 2211 and the first axle 311. The fixing key 412 is a block-shaped structure secured to the outer axial surface of the first axle 311. The fixing key 412 is inserted into the fixing slot 411 to secure the first axle 311 to the first hinge rod 2211.

[0053] Furthermore, the elastic snap-fit ​​assembly 420 includes a slot 421 defined in the second hinge rod 2212 and an elastic snap-fit ​​member 422 disposed on the second axle 321. The slot 421 is defined on the inner wall of the mounting hole between the second hinge rod 2212 and the second axle 321. The elastic snap-fit ​​member 422 is disposed on the second axle 321 and mates with the slot 421. Engaging the elastic snap-fit ​​member 422 with the slot 421 secures the second axle 321 on the second hinge rod 2212. Disengaging the elastic snap-fit ​​member 422 from the slot 421 enables the second axle 321 to slide and rotate on the second hinge rod 2212.

[0054] Specifically, the elastic engaging member 422 includes a protruding ball 4221 and a compression spring 4222. A retaining groove is defined on the second axle 321, and the compression spring 4222 is fixed to the bottom of the retaining groove. The end of the compression spring 4222, distal from the bottom of the retaining groove, is fixedly connected to the protruding ball 4221. The protruding ball 4221 is located within the retaining groove. Under the action of the compression spring 4222, the end of the protruding ball 4221, distal from the bottom of the retaining groove, protrudes out of the notch of the retaining groove and can be inserted into the retaining groove 421 of the second hinge rod 2212. When the portion of the protruding ball 4221 protruding from the notch of the retaining groove is inserted into the corresponding retaining groove 421, the second axle 321 is securely secured to the second hinge rod 2212. When the second axle 321 is pushed axially toward the second driven wheel 323, the protruding ball 4221 is pressed against the notch of the retaining slot. Under the reaction force of the retaining slot, the protruding ball 4221 retracts into the retaining slot, thereby releasing the fixed connection between the second axle 321 and the second hinge rod 2212. When the protruding ball 4221 is released from the retaining slot 421, the second hinge rod 2212 and the second axle 321 are connected in a rotational and sliding manner.

[0055] In this embodiment, by pushing the first hinged rod 2211 toward the second driven wheel 323, the protruding ball 4221 can be retracted into the corresponding retaining groove, thereby changing the position of the first hinged rod 2211 on the second wheel axle 321. After the hydraulic hammer 300 has completed driving a pile between the first wheel body 312 and the second wheel body 322, the second wheel body 322 can be pushed to avoid the already driven pile. When the hydraulic hammer 300 moves to a new pile to be driven, the second wheel body 322 can be pulled back to reposition the pile to be driven.

[0056] The elastic clamping piece 422 can play a positioning role in the movement of the second wheel axle 321 on the second hinge rod 2212. In the process of pulling the second wheel body 322 back to correspond to the first wheel body 312, the second wheel axle 321 can be positioned on the second hinge rod 2212 only when the protruding ball 4221 moves into the clamping groove 421. Only then can the second wheel body 322 correspond to the first wheel body 312 and cooperate with the first wheel body 312 to complete the positioning of the pile column to be driven, thereby avoiding the second wheel body 322 from being difficult to correspond to the first wheel body 312 due to excessive or insufficient pulling force, thereby affecting the positioning of the pile column to be driven.

[0057] In some embodiments, the first wheel body 312 includes a first wheel 3121, a second wheel 3122, and a first spacer cylinder 3123. Both the first wheel 3121 and the second wheel 3122 are coaxially mounted on the first axle 311. The first spacer cylinder 3123 is a hollow cylinder disposed between the first wheel 3121 and the second wheel 3122. The first spacer cylinder 3123 is coaxially mounted on the first axle 311, and its two sides are rotatably connected to the first wheel 3121 and the second wheel 3122 via bearings. A first angular displacement sensor 710 is mounted on the first axle 311. The position of the first angular displacement sensor 710 corresponds to the mounting position of the first spacer cylinder 3123. When the first spacer cylinder 3123 rotates, the first angular displacement sensor 710 can measure the number of revolutions of the first spacer cylinder 3123.

[0058] Specifically, some scales may be provided on the inner wall of the first spacer cylinder 3123 , and the scales are distributed all over the inner wall of the first spacer cylinder 3123 . The first angular displacement sensor 710 can measure how many times the first spacer cylinder 3123 rotates around the first axle 311 .

[0059] Furthermore, the second wheel body 322 includes a third wheel 3221, a fourth wheel 3222, and a second spacer cylinder 3223. The third wheel 3221, the fourth wheel 3222, and the second spacer cylinder 3223 are all sleeved on the second wheel shaft 321 and are all coaxially arranged with the second wheel shaft 321. The second spacer cylinder 3223 is located between the third wheel 3221 and the fourth wheel 3222, and the second spacer cylinder 3223 is rotatably connected to the third wheel 3221 and the fourth wheel 3222 on both sides.

[0060] In this embodiment, the first spacer cylinder 3123 in the first wheel body 312 and the second spacer cylinder 3223 in the second wheel body 322 respectively abut against the pile to be driven from opposite sides, thereby positioning the pile to be driven. When the hydraulic hammer 300 drives the positioned pile, the first spacer cylinder 3123 and the second spacer cylinder 3223 abut against the pile to be driven. Therefore, as the pile to be driven is driven into the ground, the first spacer cylinder 3123 and the second spacer cylinder 3223 can rotate as the pile gradually penetrates deeper into the ground. The first angular displacement sensor 710 disposed on the first wheel axle 311 can measure the number of rotations of the first spacer cylinder 3123, and the driving depth of the pile can be measured based on the cross-sectional circumference of the first spacer cylinder 3123.

[0061] When it is necessary to carry out piling operations on multiple piles, it is only necessary to measure the cross-sectional circumference of the first spacing cylinder 3123 and the required piling depth before piling, place the pile to be driven between the first spacing cylinder 3123 and the second spacing cylinder 3223, and then start the hydraulic hammer 300 to hammer the pile. The pile drives the first spacing cylinder 3123 to rotate. According to the number of rotations of the first spacing cylinder 3123, it is easy to judge whether the pile has reached the target depth. This can eliminate the need to determine the piling depth through manual observation or manual measurement during piling, and can increase the piling speed.

[0062] In some embodiments, a mounting groove 3131 is opened in the first driven wheel 313, and a second angular displacement sensor 720 is installed on the first wheel axle 311. The second angular displacement sensor 720 is located in the mounting groove 3131. The second angular displacement sensor 720 can measure the number of rotations of the first driven wheel 313.

[0063] The second angular displacement sensor 720 disposed on the first wheel axle 311 can measure the distance between adjacent piles. For example, after driving the first pile, the second wheel 322 can be pushed toward the second driven wheel 323 before driving the second pile. When the second wheel axle 321 moves until the protruding ball 4221 engages the retaining groove 421, the construction vehicle is activated in the direction of travel of the present invention. The construction vehicle drives the guide rail 100, hydraulic cylinder 210, and other structures to move synchronously. The movement of the guide rail 100 and hydraulic cylinder 210 drives the first wheel 312 to move on the ground. When the construction vehicle moves the guide rail 100, hydraulic cylinder 210, and first wheel 312 to a new piling position, the distance between adjacent piling positions can be calculated using the second angular displacement sensor 720 disposed within the first driven wheel 313.

[0064] On the travel path of the present invention, the interval between adjacent piling positions can be measured by the number of rotations of the first driven wheel 313, and the depth of piling can be determined according to the number of rotations of the first spacer cylinder 3123 along the pile column. This not only improves the efficiency of piling, but also reduces the steps required for piling, and can further reduce the piling time.

[0065] Furthermore, the first wheel 3121, the second wheel 3122, the first driven wheel 313, the third wheel 3221, the fourth wheel 3222, and the second driven wheel 323 are all rigid wheels. Only when these wheels are rigid wheels will they not deform during piling and can they maintain constant contact with the ground, thus preventing the guide rail 100 from deflecting.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guide device for a pile driver for road construction, characterized in that: include: A guide rail (100), the guide rail (100) being mounted on one side of a construction vehicle via a fixing rod (101) and being maintained vertically to the ground via a hydraulic connecting rod (102) provided on the construction vehicle; A support guide mechanism (200) comprising a hydraulic cylinder (210), an articulated connecting rod (220) and a guide wheel group (230); the hydraulic cylinder (210) is mounted on the bottom of the guide rail (100); the articulated connecting rod (220) is arranged at the output end of the hydraulic cylinder (210); the guide wheel group (230) is arranged between the hydraulic cylinder (210) and the ground via the articulated connecting rod (220); the guide wheel group (230) comprises a first wheel group (310) and a second wheel group (320); the first wheel group (310) and the second wheel group (320) are arranged at the bottom of the hydraulic cylinder (210) via the articulated connecting rod (220); the first wheel group (310) comprises a first wheel group (310); and the second wheel group (320) comprises a second wheel group (320). A wheel axle (311), a first wheel body (312) and a first driven wheel (313), wherein the first wheel axle (311) is fixedly connected to the hinge connecting rod (220), the first wheel body (312) and the first driven wheel (313) are both rotatably mounted on the first wheel axle (311) and are both coaxially arranged with the first wheel axle (311); the second wheel set (320) comprises a second wheel axle (321), a second wheel body (322) and a second driven wheel (323), the second wheel axle (321) is movably connected to the hinge connecting rod (220), the second wheel body (322) and the first driven wheel (313) are both rotatably mounted on the second wheel axle (321) and are both coaxially arranged with the second wheel axle (321); A hydraulic hammer (300) is slidably arranged on the guide rail (100) via a hydraulic connecting rod (102), and the extending direction of the hammer head of the hydraulic hammer (300) is parallel to the length direction of the guide rail (100).

2. A guide device for a pile driver for road construction according to claim 1, characterized in that: The hinge connecting rod (220) includes a hinge rod (2210) and a limiting rod (2220), the hinge rod (2210) includes a first hinge rod (2211) and a second hinge rod (2212), a slider is slidably provided on the output shaft of the hydraulic cylinder (210), one end of the first hinge rod (2211) and the second hinge rod (2212) are respectively hinged to the two ends of the slider, and the other ends of the first hinge rod (2211) and the second hinge rod (2212) are respectively connected to the first wheel shaft (311) through a fixing member (410) and are movably connected to the second wheel shaft (321) through an elastic clamping assembly (420); The limiting rod (2220) includes a first limiting rod (2221) and a second limiting rod (2222), one end of the first limiting rod (2221) and the second limiting rod (2222) are respectively hinged to the two sides of the output shaft of the hydraulic cylinder (210), and the other end of the first limiting rod (2221) and the second limiting rod (2222) are respectively hinged to the first wheel axle (311) and movably connected to the second wheel axle (321).

3. A guide device for a pile driver for road construction according to claim 2, characterized in that: The second hinged rod (2212) and the second limiting rod (2222) are both broken-line rods, and are both bent toward the side close to the construction vehicle.

4. A guide device for a pile driver for road construction according to claim 2, characterized in that: The fixing member (410) includes a fixing groove (411) and a fixing key (412); the fixing groove (411) is provided on the inner wall of the mounting hole of the first hinge rod (2211) and the first wheel shaft (311); the fixing key (412) is fixed on the first wheel shaft (311); and the fixing key (412) is adapted to the fixing groove (411).

5. A guide device for a pile driver for road construction according to claim 2, characterized in that: The elastic snap-fit ​​assembly (420) includes a snap-fit ​​groove (421) and an elastic snap-fit ​​member (422). The snap-fit ​​groove (421) is provided on the inner wall of the mounting hole between the second hinged rod (2212) and the second wheel axle (321). The elastic snap-fit ​​member (422) is mounted on the second wheel axle (321). The elastic snap-fit ​​member (422) is adapted to the snap-fit ​​groove (421). The snap-fitting of the elastic snap-fit ​​member (422) with the snap-fit ​​groove (421) enables the second wheel axle (321) to be fixed on the second hinged rod (2212). The snap-fitting of the elastic snap-fit ​​member (422) with the snap-fit ​​groove (421) enables the second wheel axle (321) to slide and rotate on the second hinged rod (2212).

6. A guide device for a pile driver for road construction according to claim 1, characterized in that: The first wheel body (312) comprises a first disc wheel (3121), a second disc wheel (3122) and a first spacer cylinder (3123); the cross-sectional radius of the first spacer cylinder (3123) is smaller than the cross-sectional radius of the first disc wheel (3121) and the second disc wheel (3122); the first spacer cylinder (3123) is rotatably arranged between the first disc wheel (3121) and the second disc wheel (3122); a first angular displacement sensor (710) is mounted on the first wheel shaft (311); when the first spacer cylinder (3123) rotates relative to the first disc wheel (3121), the number of revolutions of the first spacer cylinder (3123) can be measured by the first angular displacement sensor (710).

7. A guide device for a pile driver for road construction according to claim 6, characterized in that: A mounting groove (3131) is provided in the first driven wheel (313), and a second angular displacement sensor (720) is mounted on the first wheel shaft (311). The number of rotations of the first driven wheel (313) can be measured by the second angular displacement sensor (720).

8. The guide device for a pile driver for road construction according to claim 6, characterized in that: The second wheel body (322) includes a third wheel (3221), a fourth wheel (3222) and a second spacer cylinder (3223). The cross-sectional radius of the second spacer cylinder (3223) is smaller than the cross-sectional radius of the third wheel (3221) and the fourth wheel (3222). The second spacer cylinder (3223) is rotatably arranged between the third wheel (3221) and the fourth wheel (3222).

9. A guide device for a pile driver for road construction according to claim 8, characterized in that: The first wheel (3121), the second wheel (3122), the first driven wheel (313), the third wheel (3221), the fourth wheel (3222) and the second driven wheel (323) are all rigid wheels.

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