Wood pile construction device and method for slope support and foundation treatment

Abstract

The present invention discloses a wood pile construction device and method for slope support and foundation treatment. The construction device includes an excavator body and a wood pile carrier. The end of the digging arm structure of the excavator body is provided with a wood pile grab assembly, and the front end of the excavator body is provided with a pile support bracket; the wood pile carrier is connected to the rear end of the excavator body through a traction rod, and includes a walking bracket and a wood pile loading compartment. A jack is provided at the bottom of the wood pile loading compartment, and the wood pile loading compartment is lifted along the hinge part of the rear end by the jack. The wood pile carrier of the present invention has the function of carrying in batches with the excavator and smoothing the orientation of the wood piles to facilitate the excavator to grab; the wood piles are grabbed and clamped by the grab assembly, and the wood piles are straightened and compacted and pressed down. The present invention realizes batch loading, batch transportation and precise construction of wood piles, and the construction process can be completed automatically, reducing labor costs, and can ensure the verticality of wood pile construction, guarantee the construction quality of slope support engineering, and greatly improve the progress of the project.

Description

Technical Field

[0001] The invention relates to the field of geotechnical engineering, and in particular to a wooden pile construction device and method for improving the efficiency of wooden pile construction in slope support and foundation treatment. Background Art

[0002] In the field of geotechnical engineering, especially in the field of slope support and foundation treatment, engineering technicians often solve the problem of anti-uplift stability of the soft soil layer at the bottom of the slope or the problem of insufficient bearing capacity of the natural soft foundation by driving support piles at the bottom of the slope or reinforcing the natural foundation with piles. Due to the advantages of cheap materials, convenient batch processing, and simple construction technology, wooden piles are generally combined with other support structures or foundation treatment processes to become a commonly used reinforcement structure in the field of slope support and foundation treatment.

[0003] The traditional wood pile construction method uses an excavator that is simply modified with a bucket, or even does not require any modification and directly uses the bucket to hit the wood piles into the construction site. The entire process of transporting the wood piles from the stacking point to the construction site, assisting in adjusting the position after grabbing the wood piles, and straightening them during the injection needs to be completed manually, which consumes manpower and construction time. In addition, since the wood piles are long and heavy during transportation and are often transported directly from the top of the slope to the bottom of the slope, the workers are burdened with heavy loads and unstable center of gravity. In addition, during the construction of wood piles in soft soil areas, the rough beating or pressing of the excavator can easily cause the wood piles to be misaligned or unstable, requiring manual straightening at any time. Therefore, safety accidents are prone to occur during the traditional wood pile construction process, and the construction efficiency is low. After construction, the wood piles are prone to misalignment, affecting the quality of reinforcement.

[0004] The present invention explores a device and method for improving the efficiency of wood pile construction for slope support and foundation treatment, so as to solve the problems of insufficient safety, low construction efficiency and difficulty in ensuring reinforcement quality in traditional wood pile construction methods. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a wood pile construction device and method for slope support and foundation treatment. The present invention realizes batch loading, batch transportation and precise construction of wood piles through reasonable modification and maximum utilization of the modified excavator main body and a series of devices. Compared with the traditional wood pile construction process for slope support and foundation treatment, almost no manual operation is required except for operating the excavator, and the verticality of the wood pile construction can be ensured, the construction quality of the slope support project can be guaranteed, the project progress can be greatly improved, and the safety hazards of wood pile construction can be reduced.

[0006] To achieve the above-mentioned purpose, the present invention provides a wood pile construction device for slope support and foundation treatment, including an excavator body, wherein the excavator body includes an upper cab structure, a chassis frame, a walking crawler and a digging arm structure arranged at the front side of the upper cab structure, wherein the upper cab structure is connected to the chassis frame through a rotating shaft disc, wherein the construction device also includes a wood pile carrier connected to the rear of the excavator body, wherein the free end of the digging arm structure of the excavator body is provided with a wood pile grab assembly, and the front end of the excavator body is provided with a pile support bracket, wherein the pile support bracket includes a bracket hydraulic power mechanism and an arc bracket, wherein the arc bracket The curvature of the frame matches the outer diameter of the wood pile to be constructed, and the bracket hydraulic power mechanism provides power for the arc-shaped bracket to push the arc-shaped bracket forward or retract; the wood pile carrier is connected to the rear end of the excavator body through a traction rod, and the wood pile carrier includes a traveling bracket and a wood pile loading carriage arranged on the traveling bracket, and the wood pile loading carriage is an upper open box body, and its carriage front baffle cover adjacent to the side of the excavator body is a movable baffle, and the rear end of the wood pile loading carriage is hingedly connected to the traveling bracket, and a jack is provided at the bottom of the wood pile loading carriage, and the wood pile loading carriage is lifted around the hinge part of the rear end by the jack.

[0007] The better technical solution of the present invention is as follows: the wood pile grab assembly replaces the original excavator bucket of the excavator body, and is dynamically connected to the digging arm structure of the excavator body, powered by the excavator body, and transmits the pressure and thrust of the excavator forearm through the forearm, connecting rod and rocker components of the digging arm structure; the wood pile grab assembly mainly includes a grab and a pile cap, the grab is arranged around the pile cap, and the excavator body provides hydraulic power through hydraulic pipelines to control the opening and closing angle of the grab, and the pile cap is an inwardly concave circular joint, and its size matches the wood pile to be constructed.

[0008] The better technical solution of the present invention is as follows: the pile supporting bracket is arranged on the central axis of the chassis frame of the excavator body, the bracket hydraulic power mechanism is a hydraulic cylinder, the arc-shaped bracket is in a straight and long strip shape, and is connected to the piston end of the bracket hydraulic power mechanism; the bracket hydraulic power mechanism is connected to the power device and control system of the excavator body through hydraulic pipelines and control cables, and is powered by the power device of the excavator body, and the arc-shaped bracket is controlled by the excavator body operating room to push forward or retract.

[0009] A better technical solution of the present invention is as follows: the traction rod is a rigid traction rod, which is provided with two groups. The two groups of traction rods are symmetrically arranged with the central axis of the wood pile carrier, two groups of first hanging rings are correspondingly provided on the wood pile loading compartment, and two groups of second hanging rings are correspondingly provided on the chassis frame of the excavator body, and the two ends of each group of traction rods are movably connected with the corresponding first hanging ring and second hanging ring respectively.

[0010] A more preferred technical solution of the present invention is as follows: a hollow partition is provided between the wood pile loading compartment and the traveling support, and the jack is an electric jack, of which two are provided, and the two jacks are symmetrically arranged at the middle front part of the hollow partition with the central axis of the wood pile carrier; under the action of the jack, the wood pile loading compartment rotates upward 30 to 45 degrees around the hinged part with the traveling support so that the wood pile loading compartment is lifted and tilted; the power of the jack matches the maximum load and maximum rotation angle of the wood pile loading compartment; the control circuit of the jack is connected to the control system of the excavator body.

[0011] A more preferred technical solution of the present invention: the wood pile loading compartment is arranged in a long strip shape, the width of which is not less than ten times the diameter of the wood piles to be constructed, the length is greater than the length of the wood piles to be constructed, and the height is not less than three times the diameter of the wood piles to be constructed; the bottom edge of the front cover of the wood pile loading compartment is hinged to the compartment body, and the upper two sides are connected to the compartment body through a locking mechanism.

[0012] The preferred technical solution of the present invention is that the arc-shaped bracket is a horizontal arc-shaped steel ring symmetrical with the central axis of the chassis frame of the excavator body, its width is not less than the diameter of the wooden pile to be constructed, its axial projection length is 2 / 3 of the diameter of the wooden pile to be constructed, and the curve radius decreases inward.

[0013] In order to achieve the above technical purpose, the present invention also provides a method for constructing wooden piles for slope support and foundation treatment, wherein the method uses the above wooden pile construction device for slope support and foundation treatment for construction, and the specific steps are as follows:

[0014] S1. Before the construction of wooden piles, the surveyors shall make a layout according to the design drawings, determine the location of each wooden pile, and mark it;

[0015] S2. The excavator body of the wood pile construction device drives the wood pile carrier to move to the wood pile stacking point to be constructed, and controls the digging arm structure of the excavator body to rotate to the position of the rear wood pile loading compartment, and moves the stacked wood piles to be constructed into the wood pile loading compartment through the grab assembly, and each wood pile to be constructed is placed flat in the wood pile loading compartment, with the pile tip facing the end away from the excavator body;

[0016] S3. After the piles to be constructed are stacked in step S2, the digging arm structure of the excavator body is controlled to rotate to the front side, and the pile carrier carrying the loaded piles to be constructed is driven to the vicinity of the pile construction site by the excavator body, and the excavator body and the pile carrier are parked;

[0017] S4. Control the jack to lift the pile loading carriage to a 30-45° tilt around the rear side of the carriage, so that the pile head side of the pile to be constructed in the carriage faces upward and the pile tip side faces downward. At the same time, open the front cover of the pile loading carriage near the excavator body to prepare for grabbing the pile to be constructed;

[0018] S5. Control the digging arm structure of the excavator body to drive the wood pile grab assembly to rotate backward to the rear wood pile loading compartment, and grab the first wood pile to be constructed through the wood pile grab assembly. After clamping, control the digging arm structure to drive the clamped first wood pile to be constructed to rotate to the front side of the excavator body, control the excavator body to move to the position directly opposite the wood pile to be constructed, adjust the digging arm structure to rotate the first wood pile to be constructed to the vertical direction, and at the same time control the arc bracket to extend and retract, and adjust the position of the first wood pile to be constructed to assist in adjusting the position of the wood pile, until the tip of the first wood pile to be constructed is aligned with the marked construction point;

[0019] S6. After adjusting the position of the first wooden pile to be constructed, control the digging arm structure of the excavator body to apply pressure to the first wooden pile to be constructed, and press the first wooden pile to be constructed to the designed depth;

[0020] S7. After the construction of the first pile to be constructed is completed, the excavator body is controlled to drive the pile carrier to move to the vicinity of the next pile construction point, and steps S5 and S6 are repeated to construct the next pile until the construction of the batch of piles is completed;

[0021] S8. After the construction of the batch of wood piles is completed, the jack is controlled to drive the wood pile loading carriage back to its original position, and steps S2 to S7 are repeated to carry out the construction of the next batch of wood piles until the construction of all wood piles is completed.

[0022] A more preferred technical solution of the present invention: in the step S2, when loading the wooden piles to be constructed, first open the front cover of the wooden pile loading compartment adjacent to the excavator body, and set a buffer layer between the tip of the wooden pile to be constructed and the rear cover of the wooden pile loading compartment; when stacking the wooden piles to be constructed, the position of each wooden pile to be constructed is parallel to the central axis of the wooden pile loading compartment, and multiple wooden piles to be constructed are densely stacked in layers from bottom to top, and 3 to 5 layers are stacked in sequence. After stacking, the front cover of the compartment is closed.

[0023] A better technical solution of the present invention: in the step S5, after the pile tip of the wooden pile to be constructed is aligned with the marked construction point, its pile tip contacts the construction ground, and under the gripping force of the wooden pile grab assembly, the support of the pile support bracket and the reaction force between the tip of the wooden pile and the ground, the pile head of the wooden pile to be constructed is slowly pressed into the pile cap of the wooden pile grab assembly, and after confirming again that the wooden pile is perpendicular to the construction ground, the pile tip is aligned with the construction point, and the wooden pile is stable and does not shake, the digging arm structure of the excavator body is controlled to transmit pressure through the pile cap to slowly press the wooden pile to be constructed to the designed depth; in the process of pressing down the wooden pile to be constructed, the wooden pile to be constructed is supported by the pile support bracket to maintain its accurate position.

[0024] The pile support bracket of the present invention has the function of adjustable length, and the function of straightening the pile and preventing it from tilting when the pile grab assembly straightens the position of the pile and presses the pile down. The pile grab assembly has the function of grabbing and clamping, straightening and compacting the pile under the action of the power arm of the excavator body.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The construction device of the present invention can realize batch loading of wood piles and batch construction of wood piles at construction sites. The wood pile carrier can carry more than 30 wood piles at a time, that is, multiple wood piles can be constructed in one batch without multiple transfers, which directly saves manual handling costs and time and greatly improves construction efficiency;

[0027] (2) The pile carrier of the present invention places the piles to be constructed in a uniform orientation during the batch loading process. After arriving at the construction site, the carriage has a built-in lifting function, which is convenient for grabbing. In addition, the grab bucket, pile cap and the front bracket structure of the excavator are used to adjust and maintain the designed pile orientation during the grabbing and pressing process of the piles. Compared with the traditional technical method that requires manual handling and manual assistance in adjusting the pile orientation throughout the process, the patented technical method requires almost no manual operation except for operating the excavator, which saves at least 80% of the manual operation cost and time, and saves at least 50% of the overall construction period;

[0028] (3) Since the whole process is completed by mechanical operation, compared with the traditional technical method which requires a lot of manual operation and brings related hidden dangers (mechanical impact, falling from height, instability and falling, etc.), the construction method of the present invention greatly improves the safety of wooden pile construction, which is conducive to creating a safe and civilized construction site environment and reducing or even eliminating the occurrence of safety accidents;

[0029] (4) The present invention uses a reasonably modified grab bucket, pile cap and pile support bracket structure to ensure that the piles maintain their designed position during the downward pressure process without falling off, tilting or deforming, thereby achieving stable and accurate pile construction. This replaces the traditional pile construction technology method of using a bucket to beat or hammer the piles, which is beneficial to ensuring the overall construction quality of slope support and foundation treatment projects.

[0030] (5) The present invention has a wide range of applications and is suitable for wood pile construction projects of various pile diameters and lengths. It is particularly suitable for soft site foundation treatment and slope soft foundation reinforcement projects for large-scale wood pile construction. The patented technical method does not require major modifications to the existing excavator equipment as a whole, and the modified (added) structures such as grab buckets and carriers can be recycled and flexibly disassembled, which is conducive to achieving higher economic benefits for the project as a whole.

[0031] The present invention mainly includes the processes of excavator body modification and device manufacturing, wood pile procurement, manufacturing and storage, construction layout, batch loading, batch construction of wood piles at construction points and cyclic construction. Through reasonable modification and maximum utilization of the modified excavator body and series of devices, batch loading, batch transportation and precise construction of wood piles are realized. Compared with the traditional wood pile construction process for slope support and foundation treatment, almost no manual operation is required except for operating the excavator, which can ensure the verticality of wood pile construction, ensure the construction quality of slope support engineering, and greatly improve the progress of the engineering. At the same time, since the whole process of mechanical operation is without manual labor, the safety hazard of wood pile construction is greatly reduced, and the manufacturing process of the device is relatively simple. The present invention has a wide range of application, and is particularly suitable for soft soil layers with high water content (such as peat soil), slope support and foundation treatment engineering with difficult-to-control wood pile verticality and large wood pile engineering volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the construction device of the present invention grabbing wood piles for stacking;

[0033] Figure 2 It is a schematic diagram of the construction device for transporting wooden piles in the present invention;

[0034] Figure 3 It is a schematic diagram of the construction device of the present invention grabbing a wooden pile after arriving at the construction site;

[0035] Figure 4 It is a schematic diagram of the construction device of the present invention grabbing a wooden pile and adjusting the position of the wooden pile;

[0036] Figure 5 It is a schematic diagram of a construction device in the present invention in which a wooden pile is adjusted to a vertical position and the pile tip is aligned with a marked pile position;

[0037] Figure 6 It is a schematic diagram of the construction device pressing down the wooden pile in the present invention;

[0038] Figure 7 It is a schematic diagram of the connection between the wood pile carrier and the rear side of the excavator chassis frame in the present invention;

[0039] Figure 8 It is a schematic diagram of the connection between the front bracket of the excavator chassis frame and the main chassis frame of the excavator in the present invention;

[0040] Fig. 9 is a schematic top view of the wood pile carrier in the present invention;

[0041] Fig.10 It is a side view schematic diagram of the wood pile carrier in the present invention with the carriage in a flat state;

[0042] Fig.11 is a side view schematic diagram of the wood pile carrier in the present invention with the carriage raised;

[0043] Fig.12 is a rear view schematic diagram of the wood pile carrier in the present invention with the carriage raised;

[0044] Fig.13 It is a detailed schematic diagram of the process of adjusting the orientation of the wooden piles after the wooden piles are in place in the present invention;

[0045] Fig.14 It is a detailed schematic diagram of the process of pressing down the wooden pile after the wooden pile is in place in the present invention;

[0046] Fig.15 It is a schematic diagram of the excavator base in the present invention.

[0047] In the figure, 1 is the main body of the excavator, 1-1 is the upper cab structure, 1-2 is the rotating shaft plate, 1-3 is the chassis frame, 1-4 is the walking track, 1-5 is the second hanging ring, 1-6 is the digging arm structure, 2 is the wood pile grab assembly, 2-1 is the grab, 2-2 is the pile cap, 3 is the wood pile carrier, 3-1 is the traction rod, 3-2 is the control line, 3-3 is the jack, 3-4 is the first hanging ring, 3-5 is the wood pile loading compartment, 3-6 is the front cover of the compartment, 3-7 is the hollow partition, 3-8 is the walking bracket, 4 is the pile support bracket, 4-1 is the arc bracket, 4-2 is the bracket hydraulic power mechanism, 5 is the wood pile to be constructed, 5-1 is the tip of the wood pile, and 6 is the ground. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Figures 1 to 15 The drawings are all of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The technical solutions shown in the following drawings are specific solutions of the embodiments of the present invention and are not intended to limit the scope of the invention claimed for protection. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the invention technology is used, or the orientation or position relationship usually understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] The embodiment provides a wood pile construction device for slope support and foundation treatment, such as Figures 1 to 6 , Fig.15 As shown, it includes an excavator body 1. The excavator body 1 is an existing excavator, including an upper cab structure 1-1, a chassis frame 1-3, a walking track 1-4, and an arm structure 1-6 arranged on the front side of the upper cab structure 1-1. The upper cab structure 1-1 is connected to the chassis frame 1-3 through a rotating shaft disc 1-2, and the upper cab structure 1-1 is driven to rotate forward and backward through the rotating shaft disc 1-2 to change the direction of the arm structure 1-6. A wood pile grab bucket assembly 2 is provided at the free end of the arm structure 1-6 of the excavator body 1, and a pile support bracket 4 is provided at the front end of the excavator body 1. The wood pile grab bucket assembly 2 replaces the position of the original excavator bucket of the excavator body 1, and is dynamically connected to the arm structure of the excavator body 1. The excavator body 1 provides power, and the pressure and thrust of the excavator forearm are transmitted through the forearm, connecting rod and rocker components of the arm structure, thereby controlling the wood pile bucket assembly 2 to clamp the wood pile and then press down. As shown Fig.13 and Fig.14 As shown, the wood pile grab assembly 2 mainly includes a grab 2-1 and a pile cap 2-2. The grab 2-1 is arranged around the pile cap 2-2. The hydraulic power provided by the excavator body 1 through the hydraulic pipeline controls the opening and closing angle of the grab 2-1. The pile cap 2-2 is an inwardly concave circular joint, and its size matches the wood pile 5 to be constructed. The wood pile to be constructed can be clamped by the grab 2-1, and the pile head of the wood pile 5 to be constructed can be pressed into the pile cap 2-2 under pressure.

[0051] The embodiment provides a wood pile construction device for slope support and foundation treatment, such as Figures 1 to 6 ,and Figure 8 As shown, the pile support bracket 4 includes a bracket hydraulic power mechanism 4-2 and an arc bracket 4-1. The arc of the arc bracket 4-1 matches the outer diameter of the wooden pile 5 to be constructed. The bracket hydraulic power mechanism 4-2 provides power for the arc bracket 4-1 to push forward or retract. The pile support bracket 4 is arranged on the central axis of the chassis frame 1-3 of the excavator body. The bracket hydraulic power mechanism 4-2 is a hydraulic cylinder. The arc bracket 4-1 is in a straight strip shape and is connected to the piston end of the bracket hydraulic power mechanism 4-2. The bracket hydraulic power mechanism 4-2 is connected to the power device and control system of the excavator body 1 through hydraulic pipelines and control cables, and is powered by the power device of the excavator body 1, and the arc bracket 4-1 is controlled by the operating room of the excavator body 1 to push forward or retract. The arc bracket 4-1 is a horizontal arc steel ring symmetrical with the central axis of the chassis frame 1-3 of the excavator body, its width is not less than the diameter of the wooden pile 5 to be constructed, the axial projection length is 2 / 3 of the diameter of the wooden pile 5 to be constructed, and the curve radius decreases inward.

[0052] The embodiment provides a wood pile construction device for slope support and foundation treatment, such as Figures 1 to 6The construction device also includes a wood pile carrier 3 connected to the rear of the excavator body 1, and the wood pile carrier 3 is connected to the rear end of the excavator body 1 through a traction rod 3-1. Figure 7 As shown, the traction rod 3-1 is a rigid traction rod, and two groups are provided. The two groups of traction rods 3-1 are symmetrically arranged with respect to the central axis of the wood pile carrier 3. Two groups of first hanging rings 3-4 are correspondingly provided on the wood pile loading compartment 3-5, and two groups of second hanging rings 1-5 are correspondingly provided on the chassis frame 1-3 of the excavator body 1. The two ends of each group of traction rods 3-1 are respectively movably connected with the corresponding first hanging ring 3-4 and second hanging ring 1-5. Figure 6 , Fig. 9 and Fig.10 As shown, the wood pile carrier 3 includes a traveling frame 3-8 and a wood pile loading compartment 3-5 arranged on the traveling frame 3-8, and the wood pile loading compartment 3-5 is arranged as a long strip of upper open box, whose width is not less than ten times the pile diameter of the wood pile 5 to be constructed, its length is greater than the pile length of the wood pile 5 to be constructed, and its height is not less than three times the pile diameter of the wood pile 5 to be constructed; the front baffle 3-6 of the wood pile loading compartment 3-5 on the side adjacent to the excavator body 1 is a movable baffle, the bottom edge of the front baffle 3-6 is hinged to the compartment, and the upper two sides are connected to the compartment through a locking mechanism.

[0053] The embodiment provides a wood pile construction device for slope support and foundation treatment, such as Figures 10 to 12 As shown, the rear end of the wood pile loading carriage 3-5 is hinged to the walking frame 3-8, a jack 3-3 is provided at the bottom of the wood pile loading carriage 3-5, and the wood pile loading carriage 3-5 is lifted around the rear end hinge portion by the jack 3-3. A hollow partition 3-7 is provided between the wood pile loading compartment 3-5 and the traveling support 3-8. The jack 3-3 is an electric jack, and two jacks are provided. The two jacks 3-3 are symmetrically arranged at the middle front part of the hollow partition 3-7 with the central axis of the wood pile carrier 3; under the action of the jack 3-3, the wood pile loading compartment 3-5 is rotated upward by 30~45° around the hinged part with the traveling support 3-8 so that the wood pile loading compartment 3-5 is lifted up in an inclined state, and the compartment is lifted up at a certain angle to facilitate the excavator to grab the wood piles in the compartment during construction; the power of the jack 3-3 is matched with the maximum load and maximum rotation angle of the wood pile loading compartment 3-5; the jack control circuit 3-2 is connected to the power device of the excavator body 1.

[0054] In a wood pile construction device for slope support and foundation treatment provided in the embodiment, the wood pile grab assembly 2 has the function of grabbing and clamping, straightening and compacting the wood piles 5 to be constructed; the wood pile carrier 3 is connected to the chassis frame 1-3 of the excavator body by a rigid traction rod 3-1, so that the wood pile carrier 3 closely follows the excavator body 1 during driving, and can also swing slightly to facilitate turning with the excavator. The wood pile carrier 3 is provided with an electric jack 3-3 to realize the automatic lifting function of the wood pile loading compartment 3-5, and the control circuit 3-2 is connected to the excavator control system; the wood pile carrier 3 has the function of carrying in batches with the excavator body 1 and smoothing the orientation of the wood piles to facilitate the excavator to grab. The length of the pile support bracket 4 on the front side of the excavator body 1 is adjustable, which can assist the grab to straighten the wood piles and prevent them from tilting during the process of straightening the orientation of the wood piles and pressing down the wood piles. The wood pile grab assembly 2 is modified from the original excavator bucket. The whole is fixedly connected to the forearm, connecting rod, rocker and other structures of the excavator and transmits the pressure (thrust) of the forearm of the excavator. The grab can be opened and closed freely and its opening and closing angle is controlled by the excavator operating room through hydraulic pipelines.

[0055] In the process of preparing a wood pile construction device for slope support and foundation treatment in the embodiment, the following parameters of the wood pile construction device are determined according to the diameter, length, and single-pile weight of the wood pile to be constructed on the slope support design drawing: the size parameters of the wood pile grab assembly 2 after the excavator body 1 is modified (such as the width spacing of the grab opening and closing, and the size of the inner diameter of the pile cap); the size (length, width, height) of the wood pile loading compartment 3-5 of the wood pile carrier 3, and the power of the electric jack is determined according to the maximum load and the jacking angle; the size parameters of the pile support bracket 4 (including the arc bracket width and the curve radius). And according to the main parameters determined above, the excavator body is modified and the related devices are manufactured, including but not limited to the design and modification of structural parts such as the rigid traction rod of the wood pile carrier and the modified hydraulic structural parts of the front end of the excavator.

[0056] The preparation process of the wood piles to be constructed in the embodiment is as follows: the wood piles are purchased from the local timber market according to the designed wood pile size parameters (tree species, pile diameter, pile length, etc.) and transported to the construction site. During the production of the wood piles, the pile diameter is strictly controlled according to the design requirements, and the shape is straight, smooth and round. The top of the pile must be sawn flat, and the small end must be cut into a pointed head to facilitate driving into the bearing layer. The foundation for storing the wood piles to be constructed must be solid and flat, and no foundation settlement problems should occur to avoid deformation of the wood piles. The wood piles to be constructed should be dispersed and stacked as much as possible in a site near the construction site to facilitate on-site loading. During the construction process, they must be properly preserved to avoid damage or rainfall erosion of the wood piles to be constructed.

[0057] A method for constructing wood piles for slope support and foundation treatment provided in the embodiment is described by taking wood pile construction in a vertical direction as an example. Specifically, the wood pile construction device for slope support and foundation treatment is used for construction, and the specific steps are as follows:

[0058] S1. Before the construction of wooden piles, surveyors will lay out the positions according to the design drawings, determine the positions of each wooden pile, and mark them.

[0059] S2. Figure 1 As shown, the excavator body of the wood pile construction device drives the wood pile carrier to move to the stacking point of the wood piles to be constructed, and controls the digging arm structure of the excavator body to rotate to the position of the rear wood pile loading compartment, and the stacked wood piles to be constructed are moved into the wood pile loading compartment through the grab assembly, and each wood pile to be constructed is placed flat in the wood pile loading compartment with the pile tip facing the end away from the excavator body, and a buffer protection (such as a foam pad, etc.) is provided between the tip of the wood pile and the rear cover of the compartment, and the pile position of each wood pile to be constructed is parallel to the central axis of the compartment, and they are densely stacked in layers from bottom to top, and 3 to 5 layers are stacked in sequence. After stacking, the front cover of the compartment is closed.

[0060] S3. After the construction piles are stacked in step S2, the digging arm structure of the excavator body is controlled to rotate to the front side, such as Figure 2 As shown, the excavator body carries a wood pile carrier loaded with wood piles to be constructed to the vicinity of the wood pile construction site, and the excavator body and the wood pile carrier are parked.

[0061] S4. Figure 3 As shown, the jack is controlled to lift the wood pile loading compartment to a 30-45° tilted state around the rear side of the compartment, so that the pile head side of the wood pile to be constructed in the compartment faces upward and the pile tip side faces downward, so as to facilitate the subsequent grabbing of the wood piles. At the same time, the front cover of the wood pile loading compartment close to the excavator body is opened to prepare for grabbing the wood piles to be constructed.

[0062] S5. Control the digging arm structure of the excavator body to drive the pile grab assembly to rotate backward to the rear pile loading compartment, and grab the first pile to be constructed through the pile grab assembly. After clamping, control the digging arm structure to drive the clamped first pile to be constructed to rotate to the front side of the excavator body, such as Figure 4 As shown, the excavator body is controlled to move to the position facing the wooden pile to be constructed, and the digging arm structure is adjusted to rotate the first wooden pile to be constructed to the vertical direction. At the same time, the arc bracket is controlled to extend and retract, and the position is adjusted to clamp the first wooden pile to be constructed to assist in adjusting the position of the wooden pile. Figure 5 As shown, the first wooden pile to be constructed is placed vertically on the ground with its tip facing downward and the tip of the pile is aligned with the marked construction point.

[0063] S6. Figure 6As shown, the operator relies on the grab force of the grab bucket, the support of the bracket and the ground reaction force at the tip of the pile to slowly press the pile back into the pile cap. After confirming again that the pile is vertical, the pile tip is aligned with the construction point, and the pile is stable and not shaking, the excavator power arm is operated to transmit pressure through the pile cap and slowly press the pile to the designed depth. During this period, in order to prevent the pile from shifting in the soft soil layer, the modified front bracket structure of the excavator is operated during the pressing process, and the flexibly retractable bracket assists in supporting the pile to maintain its accurate position.

[0064] S7. After the construction of the first wooden pile is completed, the excavator body is controlled to drive the wooden pile carrier to move to the vicinity of the next wooden pile construction point, and steps S5 and S6 are repeated to carry out the construction of the next wooden pile until the construction of this batch of wooden piles is completed.

[0065] S8. After the construction of the batch of wood piles is completed, the jack is controlled to drive the wood pile loading carriage back to its original position, and steps S2 to S7 are repeated to carry out the construction of the next batch of wood piles until the construction of all wood piles is completed.

[0066] In the embodiment, according to the construction organization design, the wood piles are preferably constructed in a skipped manner, and the horizontal and vertical spacing and arrangement of the fir wood piles are strictly controlled according to the design requirements; the above embodiment and the accompanying drawings are described and drawn for the wood pile construction in the vertical direction. However, the device and method provided by the present invention can achieve the purpose of any other direction (precise oblique construction) not limited to the wood pile construction in the vertical direction.

[0067] In order to prove the construction effect of the device and method in the present invention, the inventor of the present application applied the device and method to a soft soil slope support project near Dianchi Lake in Kunming, Yunnan. There is a soft plastic peat clay layer at the base of the slope of the project. The slope design scheme is to stack the back pressure and reinforce the passive area at the bottom of the slope with fir piles. The fir piles are selected from fir logs with a length of 4.0m and a diameter of 13cm. The length of the pile reinforcement section is about 300m, the width of the reinforcement area is 2.0m, the horizontal and vertical spacing of the pile position is 500mm, and it is arranged in a plum blossom shape. A total of 2,400 fir piles are constructed. If the traditional slope support pile construction method is adopted, each pile construction process requires manual handling and manual assistance to adjust the pile position. The construction of a single pile takes about 0.2 hours. If an excavator is used on site and the piles are constructed continuously, 40 piles can be completed every day according to the standard working time of 8 hours. The construction of 2,400 fir piles requires a total construction period of about 60 days. The traditional method of using wooden piles for slope support construction requires about three workers to repeatedly carry and straighten the wooden piles, which takes a total of 180 man-days. If the worker price is 300 yuan / man-day and the excavator rental price is 1,500 yuan / man-day, the direct economic cost of the workers and machinery for the wooden pile construction is about 324,000 yuan.

[0068] The technical personnel of the project department improved and innovated the traditional methods, adopted the construction device and method of the present invention, reasonably modified the excavator body and made the device, and applied the wood pile construction method of the present invention. The whole process does not require manual handling and straightening of wood piles. Each batch can construct about 30 wood piles. Since a lot of handling time is saved, the construction time of each batch is about 3 hours. One device and construction method of the present invention is used on site, and the wood piles are constructed uninterruptedly. According to the standard working time of 8 hours per day, it takes about 30 days to complete the construction of 2,400 fir wood piles. The manufacturing process of the present invention is relatively simple, and the cost of modification (additional installation) is roughly estimated to be about 20,000 yuan, the electricity consumption during the period is about 3,000 yuan, the excavator rental cost is about 45,000 yuan, there is no construction worker cost, and the direct economic cost of the machinery is about 68,000 yuan.

[0069] Compared with the traditional method of constructing wooden piles for slope support, the construction device and method of the present invention can directly save about 150 working days and save 256,000 yuan in economic costs. Moreover, since the whole process is mechanically operated without manual labor, the hidden dangers of safety accidents are greatly reduced, and the comprehensive benefits and potential profit margins are greatly improved.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the structural relationship and principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wood pile construction device for slope support and foundation treatment, comprising an excavator body (1), the excavator body (1) comprising an upper cab structure (1-1), a chassis frame (1-3), a walking crawler (1-4), and an excavating arm structure (1-6) arranged at the front side of the upper cab structure (1-1), the upper cab structure (1-1) being connected to the chassis frame (1-3) via a rotating shaft disc (1-2), characterized in that: The construction device also includes a wood pile carrier (3) connected to the rear of the excavator body (1); a wood pile grab assembly (2) is provided at the free end of the digging arm structure (1-6) of the excavator body (1); a pile support bracket (4) is provided at the front end of the excavator body (1); the pile support bracket (4) includes a bracket hydraulic power mechanism (4-2) and an arc bracket (4-1); the arc of the arc bracket (4-1) matches the outer diameter of the wood pile (5) to be constructed; the bracket hydraulic power mechanism (4-2) provides power to the arc bracket (4-1) so that the arc bracket (4-1) is pushed forward or retracted; the wood pile carrier (3) is connected to the rear of the excavator body (1); The traction rod (3-1) is connected to the rear end of the excavator body (1); the wood pile carrier (3) comprises a traveling support (3-8) and a wood pile loading carriage (3-5) arranged on the traveling support (3-8); the wood pile loading carriage (3-5) is an upper open box body; a front baffle (3-6) of the carriage adjacent to the side of the excavator body (1) is a movable baffle; the rear end of the wood pile loading carriage (3-5) is hingedly connected to the traveling support (3-8); a jack (3-3) is provided at the bottom of the wood pile loading carriage (3-5); and the wood pile loading carriage (3-5) is lifted around the hinged portion of the rear end by the jack (3-3); The wood pile grab assembly (2) replaces the original excavator bucket of the excavator body (1) and is dynamically connected to the digging arm structure of the excavator body (1). The excavator body (1) provides power, and transmits the pressure and thrust of the excavator forearm through the forearm, connecting rod and rocker components of the digging arm structure. The wood pile grab assembly (2) mainly comprises a grab (2-1) and a pile cap (2-2). The grab (2-1) is arranged around the pile cap (2-2), and the excavator body (1) provides hydraulic power through a hydraulic pipeline to control the opening and closing angle of the grab (2-1). The pile cap (2-2) is an inwardly concave circular joint, and its size matches the wood pile (5) to be constructed.

2. A wooden pile construction device for slope support and foundation treatment according to claim 1, characterized in that: The pile support bracket (4) is arranged on the central axis of the chassis frame (1-3) of the excavator body; the bracket hydraulic power mechanism (4-2) is a hydraulic cylinder; the arc-shaped bracket (4-1) is in a straight and long strip shape and is connected to the piston end of the bracket hydraulic power mechanism (4-2); the bracket hydraulic power mechanism (4-2) is connected to the power device and control system of the excavator body (1) through hydraulic pipelines and control cables, and is powered by the power device of the excavator body (1), and the arc-shaped bracket (4-1) is controlled by the operating room of the excavator body (1) to be pushed forward or retracted.

3. A wooden pile construction device for slope support and foundation treatment according to claim 1, characterized in that: The traction rod (3-1) is a rigid traction rod, and is provided with two groups. The two groups of traction rods (3-1) are symmetrically arranged with respect to the central axis of the wood pile carrier (3). Two groups of first hanging rings (3-4) are correspondingly arranged on the wood pile loading compartment (3-5), and two groups of second hanging rings (1-5) are correspondingly arranged on the chassis frame (1-3) of the excavator body (1). The two ends of each group of traction rods (3-1) are respectively movably connected to the corresponding first hanging ring (3-4) and the second hanging ring (1-5).

4. A wooden pile construction device for slope support and foundation treatment according to claim 1, characterized in that: A hollow partition (3-7) is provided between the wood pile loading carriage (3-5) and the traveling support (3-8); the jacks (3-3) are electric jacks, two of which are provided, and the two jacks (3-3) are symmetrically arranged at the middle front part of the hollow partition (3-7) with the central axis of the wood pile carrier (3); under the action of the jacks (3-3), the wood pile loading carriage (3-5) rotates upward by 30 to 45 degrees around the hinged part with the traveling support (3-8) so that the wood pile loading carriage (3-5) is lifted and tilted; the power of the jacks (3-3) matches the maximum load and maximum rotation angle of the wood pile loading carriage (3-5); and the control circuit (3-2) of the jacks (3-3) is connected to the control system of the excavator body (1).

5. A wooden pile construction device for slope support and foundation treatment according to claim 1, characterized in that: The wood pile loading carriage (3-5) is configured in a long strip shape, with a width of not less than ten times the diameter of the wood piles (5) to be constructed, a length greater than the length of the wood piles (5) to be constructed, and a height of not less than three times the diameter of the wood piles (5) to be constructed; the bottom edge of the carriage front baffle (3-6) of the wood pile loading carriage (3-5) is hingedly connected to the carriage body, and the upper two sides are connected to the carriage body via a locking mechanism.

6. A wooden pile construction device for slope support and foundation treatment according to claim 2, characterized in that: The arc-shaped bracket (4-1) is a horizontal arc-shaped steel ring symmetrically arranged with respect to the central axis of the chassis frame (1-3) of the excavator body, its width is not less than the diameter of the wooden pile (5) to be constructed, its axial projection length is 2 / 3 of the diameter of the wooden pile (5) to be constructed, and its curve radius decreases inwardly.

7. A method for constructing wooden piles for slope support and foundation treatment, characterized in that: The wooden pile construction method is constructed using the wooden pile construction device for slope support and foundation treatment according to any one of claims 1 to 6, and the specific steps are as follows: S1. Before the construction of wooden piles, the surveyors shall make a layout according to the design drawings, determine the location of each wooden pile, and mark it; S2. The excavator body of the wood pile construction device drives the wood pile carrier to move to the wood pile stacking point to be constructed, and controls the digging arm structure of the excavator body to rotate to the position of the rear wood pile loading compartment, and moves the stacked wood piles to be constructed into the wood pile loading compartment through the wood pile grab assembly, and each wood pile to be constructed is placed flat in the wood pile loading compartment, with the pile tip facing the end away from the excavator body; S3. After the piles to be constructed are stacked in step S2, the digging arm structure of the excavator body is controlled to rotate to the front side, and the excavator body carries the pile carrier loaded with the piles to be constructed to the vicinity of the pile construction site, and the excavator body and the pile carrier are parked; S4. Control the jack to lift the pile loading carriage to a 30-45° tilt around the rear side of the carriage, so that the pile head side of the pile to be constructed in the carriage faces upward and the pile tip side faces downward. At the same time, open the front cover of the pile loading carriage near the excavator body to prepare for grabbing the pile to be constructed; S5. Control the digging arm structure of the excavator body to drive the wood pile grab assembly to rotate backward to the rear wood pile loading compartment, and grab the first wood pile to be constructed through the wood pile grab assembly. After clamping, control the digging arm structure to drive the clamped first wood pile to be constructed to rotate to the front side of the excavator body, control the excavator body to move to the position directly opposite the wood pile to be constructed, adjust the digging arm structure to rotate the first wood pile to be constructed to the vertical direction, and at the same time control the arc bracket to extend and retract, and adjust the position to clamp the first wood pile to be constructed to assist in adjusting the position of the wood pile, until the tip of the first wood pile to be constructed is aligned with the marked construction point; S6. After adjusting the position of the first wooden pile to be constructed, control the digging arm structure of the excavator body to apply pressure to the first wooden pile to be constructed, and press the first wooden pile to be constructed to the designed depth; S7. After the construction of the first pile to be constructed is completed, the excavator body is controlled to drive the pile carrier to move to the vicinity of the next pile construction point, and steps S5 and S6 are repeated to construct the next pile until the construction of the batch of piles is completed; S8. After the construction of the batch of wood piles is completed, the jack is controlled to drive the wood pile loading carriage back to its original position, and steps S2 to S7 are repeated to carry out the construction of the next batch of wood piles until the construction of all wood piles is completed.

8. A method for constructing wooden piles for slope support and foundation treatment according to claim 7, characterized in that: In step S2, when loading the wooden piles to be constructed, first open the front cover of the wooden pile loading compartment close to the excavator body, and set a buffer layer between the tip of the wooden pile to be constructed and the rear cover of the wooden pile loading compartment; when stacking the wooden piles to be constructed, the position of each wooden pile to be constructed is parallel to the central axis of the wooden pile loading compartment, and multiple wooden piles to be constructed are densely stacked in layers from bottom to top, and 3 to 5 layers are stacked in sequence. After stacking, the front cover of the compartment is closed.

9. A method for constructing wooden piles for slope support and foundation treatment according to claim 7, characterized in that: In step S5, after the pile tip of the wooden pile to be constructed is aligned with the marked construction point, its pile tip contacts the construction ground, and under the gripping force of the pile grab assembly, the support of the pile support bracket, and the reaction force between the pile tip and the ground, the pile head of the wooden pile to be constructed is slowly pressed into the pile cap of the pile grab assembly. After confirming again that the wooden pile is perpendicular to the construction ground, the pile tip is aligned with the construction point, and the wooden pile is stable and does not shake, the digging arm structure of the excavator body is controlled to transmit pressure through the pile cap to slowly press the wooden pile to the designed depth; during the pressing process of the wooden pile to be constructed, the wooden pile to be constructed is supported by the pile support bracket to maintain its accurate position.

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