Rear suspension hole digging device

Abstract

According to the rear suspension hole digging device, the two ends of a connecting rod piece are hinged to the hinged point positions of a traction towing device and a suspension support of a tractor respectively, and the suspension support can be adaptively adjusted according to the size of a rear traction towing device of the tractor in cooperation with the flexibility of the connecting rod piece; the hanging bracket is arranged on the ground to ensure that the whole hanging bracket is in a vertical state relative to the ground, so that a drill arranged on the hanging bracket is also in a vertical state, and then the bottom of the drill is supported by at least two supports, so that the drill is stably kept vertical on the ground, and the calibration process of precision such as perpendicularity and depth of formed holes is realized in space. And then the drilling machine is driven to operate by the power output device of the tractor so as to carry out hole forming operation, so that the agricultural tractor can be modified into the hole guiding machine at the construction site, the lease cost is reduced on the premise of not influencing the working efficiency, the mechanical cost of a project is reduced, and the engineering cost is reduced.

Description

Technical Field

[0001] This application relates to the field of hole-forming construction technology, and in particular to a rear-mounted hole-forming device. Background Technology

[0002] Currently, in centralized photovoltaic power station projects, the foundations for photovoltaic panel supports are mostly designed as micro-cast piles, arranged in two rows, with a pile diameter of 220mm and a pile length of 2500-2700mm, and pre-embedded steel pipes inside. The concrete is poured on-site. Although the amount of steel reinforcement and concrete used in each pile is small, the number of piles is huge. Calculated based on a power generation capacity of 200MW, nearly 122,000 piles are needed. The construction progress of the cast-in-place piles is directly related to the progress of subsequent installation work. Therefore, construction units need a large number of drilling machines. Generally, construction units purchase or lease formal drilling machines, but both leasing and purchasing are costly. Utility Model Content

[0003] The purpose of this application is to provide a rear-mounted drilling device that can reduce rental costs and project machinery costs by modifying agricultural tractors into drilling machines at the construction site without affecting work efficiency.

[0004] The embodiments of this application can be implemented as follows:

[0005] In a first aspect, this utility model provides a rear-mounted hole-drilling device, comprising:

[0006] The suspension bracket has at least three hinge points;

[0007] A connecting rod, one end of which is hinged to the hinge point, and the other end of which is hinged to the tractor's traction trailer, wherein the connecting rod can be extended or shortened.

[0008] The drilling rig is fixed to the suspension bracket, wherein the power of the drilling rig is provided by the power take-off unit of the tractor;

[0009] At least two supports, the height of which is adjustable, are used to support the bottom of the drilling rig.

[0010] In an optional embodiment, the suspension bracket is welded from channel steel and is equilateral triangular in shape.

[0011] In an optional implementation, the three hinge points are located near the apex of the equilateral triangle.

[0012] In an optional embodiment, both ends of the connecting rod have ball joints for connection.

[0013] In an optional embodiment, the drilling rig includes a main frame, a carriage, a generator, an electric motor, and drill rods;

[0014] The main frame is fixed to the suspension bracket, and the support rests on the bottom of the main frame;

[0015] The generator is fixed to the main frame and is used to connect to the power output device to supply power to the motor.

[0016] The carriage can be raised and lowered on the main frame;

[0017] The electric motor is mounted on the slide, and the drill rod is connected to the electric motor for transmission.

[0018] In an optional embodiment, the main frame has a slide rail, and the carriage is slidably disposed on the slide rail.

[0019] In an optional embodiment, the drilling rig further includes a hydraulic shaft connected between the top of the main frame and the carriage, the hydraulic shaft being used to connect to the hydraulic system of the tractor.

[0020] In an optional embodiment, the drilling rig further includes a transmission mechanism disposed on the slide, and the electric motor is connected to the drill rod through the transmission mechanism.

[0021] In an optional embodiment, the bottom of the main frame is constructed using an I-beam base, and the generator is fixed on the I-beam base.

[0022] In an optional embodiment, the support is a universal adjustable support hinge support.

[0023] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example:

[0024] By hinged at both ends of the connecting rod to the hinge points of the tractor's towing device and the suspension bracket, and by utilizing the telescopic nature of the connecting rod, the suspension bracket can be adjusted to adapt to the size of the tractor's rear towing device, ensuring that the suspension bracket is vertical relative to the ground. This also ensures that the drill mounted on the suspension bracket is vertical. The bottom of the drill is supported by at least two supports, thus maintaining the drill's stability and verticality on the ground. This allows for spatial calibration of the hole's verticality and depth. The tractor's power take-off unit then drives the drill to perform the hole-forming operation. In this way, by converting an agricultural tractor into a drilling machine at the construction site, rental costs can be reduced without affecting work efficiency, thus lowering the project's machinery costs and overall project costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the rear-mounted hole-digging device connected to a tractor in an embodiment of this application;

[0027] Figure 2 for Figure 1 Schematic diagram of the central suspension bracket;

[0028] Figure 3 for Figure 1 Schematic diagram of the connecting rod;

[0029] Figure 4 for Figure 1 One of the schematic diagrams of a drilling rig;

[0030] Figure 5 for Figure 1 Schematic diagram of a drilling rig (Part 2);

[0031] Figure 6 for Figure 1 Schematic diagram of the central support;

[0032] Figure 7 for Figure 1 A schematic diagram of the combined structure of the central support and the drilling rig.

[0033] Icons: 10-Suspension bracket; 11-Hinge point; 20-Connecting rod; 21-Spherical hinge; 30-Drilling rig; 31-Main frame; 32-Slide carriage; 33-Generator; 34-Electric motor; 35-Drill rod; 36-Hydraulic shaft; 37-Transmission mechanism; 38-I-beam base; 39-Slide rail; 40-Support; 50-Tractor. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The following is combined Figures 1 to 7 This application provides a detailed description of some embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] This application discloses a rear-mounted hole-drilling device, which includes a suspension bracket 10, a connecting rod 20, a drilling rig 30, and a support 40;

[0042] The suspension bracket 10 has at least three hinge points 11;

[0043] One end of the connecting rod 20 is hinged to the hinge point 11, and the other end is hinged to the traction trailer of the tractor 50. The connecting rod 20 can be extended or shortened.

[0044] The drilling rig 30 is fixed to the suspension bracket 10, and the power of the drilling rig 30 is provided by the power take-off device of the tractor 50;

[0045] The height of at least two supports 40 is adjustable, and at least two supports 40 are used to jointly support the bottom of the drilling rig 30.

[0046] In this way, by hinged at both ends of the connecting rod 20 to the hinge point 11 of the tractor 50's traction trailer and the suspension bracket 10, and with the flexibility of the connecting rod 20, the suspension bracket 10 can be adjusted according to the size of the tractor 50's rear traction trailer to ensure that the suspension bracket 10 is vertical relative to the ground. Thus, the drill mounted on the suspension bracket 10 is also vertical. Then, the bottom of the drill rig 30 is supported by at least two supports 40, thereby ensuring that the drill rig 30 remains stable and vertical on the ground. This allows for the calibration of the hole's verticality, depth, and other precision in space. The drill rig 30 is then driven by the tractor 50's power output device to perform the hole-forming operation. In this way, by modifying the agricultural tractor 50 into a drilling machine at the construction site, the rental cost can be reduced without affecting work efficiency, thus reducing the project's machinery costs and lowering the overall project cost.

[0047] Typically, the towing and trailer assembly of a tractor-trailer consists of two main structures: a swing drawbar and a trailer frame. The swing drawbar connects to the implement via a pull pin at its rear end, guiding the implement to swing laterally for the desired operation. When using a tractor-trailer to lead an implement, the pull hole needs to be properly positioned. For example, two positioning pins can be inserted into the pull hole for effective fixation. Furthermore, the drawbar can be adjusted to ensure efficient control of the pull point and effective matching. The trailer frame of the tractor-trailer can effectively trailer various types of tractors-trailers, but it is important to note that the trailer frame must not be extended beyond its designated area. The towing device is installed simultaneously.

[0048] In this embodiment, in order to accommodate the towing device, there are three connecting rods 20. Two connecting rods 20 are connected to the positioning pins at the rear ends of the two towing rods as pull rods to achieve hinge. The other connecting rod 20 is connected to the trailer frame as an upward pull. In this way, the suspension bracket 10 is suspended by a point-selection suspension method.

[0049] In addition, during operation, the tractor 50 can transmit the engine's power through the power take-off device to ensure that the engine's useful work is transferred to the working tool. In this way, the drilling rig 30 can be driven solely by the tractor 50, without the need for an additional energy source.

[0050] The suspension bracket 10 is welded from No. 18 channel steel and is in the shape of an equilateral triangle. It is connected with 49.5mm high-strength bolts. The friction connection of high-strength bolts does not cause relative slippage, has good rigidity and integrity, reliable force transmission, and fatigue resistance. It is especially suitable for steel structure connections that bear dynamic loads.

[0051] The three hinge points 11 are located near the apex of the equilateral triangle. The hinged fixed ends are made of 20mm thick cast iron.

[0052] Both ends of the connecting rod 20 have ball joints 21 for connection, allowing adjustment of the tie rod according to the dimensions of the tractor 50's rear suspension equipment to facilitate the construction operation of the drill rod 35. When adjusting the tie rod, the thread lengths at both ends must be equal and must not exceed the groove opening;

[0053] The height of the drilling rig 30 is processed according to the hole depth at the construction site. The drilling rig 30 includes a main frame 31, a slide 32, a generator 33, a motor 34, and a drill rod 35.

[0054] The main frame 31 is fixed to the suspension bracket 10, and the support 40 rests on the bottom of the main frame 31. Adjacent connecting sections of the main frame 31 can be connected by inner anchoring, which is convenient for disassembly and does not affect the trajectory of the slide rail 39. The main frame 31 has a slide rail 39. The slide rail 39 for erecting the frame is made of channel steel of not less than No. 18 (national standard). The sections are connected by bolts, and the slide frame 32 can be slidably set on the slide rail 39.

[0055] The generator 33 is fixed to the main frame 31 and is used to connect to the power output device to supply power to the electric motor 34. This provides power from the tractor 50 to the electric motor 34, enabling the rotation of the drill rod 35. Furthermore, this technology addresses the issue of insufficient or unstable power output from the original tractor 50. Depending on the pile length and geological conditions, a dedicated generator 33 can be used to supplement the power output, ensuring efficient and effective drilling. The generator 33 is a 30kW general-purpose generator, connected by bolts using a support 40, and placed on the side of a transverse 20-beam.

[0056] The slide 32 is vertically mounted on the main frame 31 to drive the motor 34 and drill rod 35 to move upwards.

[0057] The electric motor 34 is mounted on the slide 32, and the drill rod 35 is connected to the electric motor 34 for transmission. The electric motor 34 is 18kw, and a triangular slide 32 is welded from 12mm steel plate and fixed on the slide 32.

[0058] The drilling rig 30 also includes a hydraulic shaft 36 connected between the top of the main frame 31 and the slide 32. The hydraulic shaft 36 is a No. 75 hydraulic shaft 36, which is used to connect to the hydraulic system of the tractor 50. In this way, the hydraulic shaft 36 can be driven by the hydraulic system of the tractor 50 to realize the lifting function of the slide 32.

[0059] The drilling rig 30 also includes a transmission 37 mounted on the slide 32. The electric motor 34 is connected to the drill rod 35 through the transmission 37 to amplify the torque of the electric motor 34 and transmit it to the drill rod 35, thereby improving the efficiency of the drill rod 35 in cutting soil to form a hole.

[0060] The bottom of the main frame 31 is constructed using a No. 20 I-beam base 38, and the generator 33 is fixed on the I-beam base 38.

[0061] Support 40 adopts a universal adjustable support hinge support 40, which is located at the bottom of the main frame 31. The universal adjustable support hinge support 40 has strong load-bearing capacity, balance, shock resistance, and height adjustment functions. The product base and bottom pad are configured according to standards, which can make the assembly more secure and prevent components from separating due to strong impacts. The screw-type adjustable feet cups are adjusted by turning the screw in or out, and the overall height of the feet cups will rise or fall accordingly, thereby adjusting the height and level of objects placed on them. Metal materials are used on site. The load-bearing beam of the base is made of 20mm I-beams (national standard). Leveling is achieved by the universal adjustable support hinge support 40 (steel plates, square timber, etc. can be used to ensure the overall stability of support 40). The longitudinal and transverse checks are performed using a level and straightedge. The adjustable rods can be fixed after stability is achieved.

[0062] This application establishes a new spatial force three-dimensional mechanical model based on the geometry of the three-point suspension, rod connection, and universal hinge support 40. To reduce the difference between the suspension geometry model and the actual structure and improve the drilling accuracy (perpendicularity and depth), a comprehensive calibration structure system is implemented using the three-point suspension, triangular rod adjustment support, and universal adjustable hinge support 40. This structure, installed on a small agricultural tractor 50, withstands steady-state loads, and the load force, the angle of the lower traction rod, and the three component forces of the three-point suspension (the forces transmitted by the three axle pins) are all well utilized. The overall structure combines tension and compression of the rods, resulting in high overall structural stability and ensuring high-quality drilling of the mechanical equipment.

[0063] The installation process of the rear suspension drilling device in this application is mainly as follows: construction preparation → installation of the three-point suspension device → fabrication and installation of the triangular adjustable rod → fabrication of the slide rail 39 frame and bracket → fixing the universal adjustable hinge support 40 → installation of the generator 33 → installation of the hydraulic shaft 36 → installation of the electric motor 34 → installation of the drill rod 35 → connection with the power unit of the tractor 50 → connection with the hydraulic unit of the tractor 50 → circuit connection → water pipeline installation → start-up and commissioning → drilling and grouting. During the construction preparation stage, the reasonable matching of the rear suspension implements of the wheeled tractor 50 is determined by factors such as the front axle counterweight load, the load-bearing capacity of the rear tires, and the maximum lifting force of the hydraulic suspension system. The matching method should comply with the relevant provisions of GB / T10911-2003. The instruction manual for the tractor 50 will provide a maximum mass matching curve between the tractor 50 and the rear suspension implements.

[0064] It is also important to note the following aspects during the construction process:

[0065] 1. Select a 50-ton agricultural tractor model based on the pile length and geological conditions.

[0066] 2. The position and center of gravity of the components fixed on the three-point suspension bracket 10 must be determined;

[0067] 3. When fixing the universal adjustment hinge support 40, it must be stable and firm. The configuration of the base and the bottom pad should be uniform to make the assembly more secure and to prevent the components from being separated due to strong impact.

[0068] 4. After stabilization, the traction connecting rod 20 is fixed after the main frame 31 is level;

[0069] 5. During drilling, the drill rod (35), main frame (31), and center of gravity should be parallel to ensure the quality of the hole.

[0070] 6. When selecting the hole position, the distance between the center of the pin hole of the pull rod and the ground must meet the requirements of the maximum working depth of the agricultural machinery. Install the universal joint on the tractor 50 side on the power take-off shaft and lock it with the fixing pin.

[0071] 7. During overall installation, the relative positions of (spindle, centroidal shaft, centroidal spindle) must be considered. The thread lengths at both ends of the tie rod must be equal and must not exceed the groove opening to prevent quality issues during operation. When the tie rod's pin head is placed in a vertical position, the pin should face towards the rear of the machine body. The universal adjusting hinge support 40 should also be adjusted according to the force direction of the connecting rod 20.

[0072] 8. Strict training must be provided before operation, and operation and maintenance must be carried out in accordance with relevant requirements;

[0073] 9. Welding processes should be carried out by professional manufacturers according to the established processing drawings;

[0074] Compared with the prior art, the technical solution of this application has the following advantages:

[0075] (1) The tractor 50 can be installed and adjusted according to the site conditions. The three-point suspension device can be adjusted to be level on site so that the drilling rig 30 can always maintain a horizontal working state and achieve high hole quality.

[0076] (2) This technology can be used not only in photovoltaic power generation and rural power grid renovation projects, but also in the construction of tree planting and soft soil treatment and foundation pit excavation support and protection projects for highways. All 122,000 bored piles implemented in this project were qualified.

[0077] (3) Easy to install and disassemble (1.5m standard segments are processed on-site), convenient to maintain, low maintenance cost, simple operation, fast construction speed, low noise, and no pollution. The agricultural tractor 50 has strong on-site adaptability and is easy to operate.

[0078] (4) For Gobi, desert and wasteland areas, the 50 tractors owned by local farmers were modified into drilling machines, which reduced transportation costs. This not only improved the utilization rate of machinery and increased the income of local farmers, but also contributed to the local economic development. At the same time, it saved the construction unit's machinery transportation and maintenance costs, reduced project costs, and played a role in cost reduction and efficiency improvement.

[0079] (5) The mobility, adaptability, efficiency and low carbon emissions have been greatly improved.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A post-hanging hole digging device, characterized by, include: The suspension bracket (10) has at least three hinge points (11); A connecting rod (20) is hinged at one end to the hinge point (11) and the other end is hinged to the traction device of the tractor (50), wherein the connecting rod (20) can be extended or shortened. A drilling rig (30) is fixed to the suspension bracket (10), wherein the power of the drilling rig (30) is provided by the power output device of the tractor (50); At least two supports (40), the height of which is adjustable, are used to support the bottom of the drill (30).

2. The rear-suspension hole-digging device according to claim 1, wherein The suspension bracket (10) is made of channel steel and is equilateral triangle in shape.

3. The rear-suspension hole-digging device according to claim 2, characterized by The three hinge points (11) are located near the apex of the equilateral triangle.

4. The rear-mounted hole-digging device according to claim 1, characterized in that, Both ends of the connecting rod (20) have ball joints (21) for connection.

5. The rear-mounted hole-digging device according to claim 1, characterized in that, The drilling rig (30) includes a main frame (31), a slide (32), a generator (33), an electric motor (34), and a drill rod (35); The main frame (31) is fixed to the suspension bracket (10), and the support (40) rests on the bottom of the main frame (31); The generator (33) is fixed to the main frame (31) and is used to connect to the power output device to supply power to the motor (34); The carriage (32) can be raised and lowered on the main frame (31); The electric motor (34) is mounted on the slide (32), and the drill rod (35) is connected to the electric motor (34) for transmission.

6. The rear-mounted hole-digging device according to claim 5, characterized in that, The main frame (31) has a slide rail (39), and the slide (32) is slidably disposed on the slide rail (39).

7. The rear-mounted hole-digging device according to claim 5 or 6, characterized in that, The drilling rig (30) also includes a hydraulic shaft (36) connected between the top of the main frame (31) and the carriage (32), the hydraulic shaft (36) being used to connect to the hydraulic system of the tractor (50).

8. The rear-mounted hole-digging device according to claim 5, characterized in that, The drilling rig (30) also includes a transmission (37) disposed on the slide (32), and the electric motor (34) is connected to the drill rod (35) through the transmission (37).

9. The rear-mounted hole-drilling device according to claim 5, characterized in that, The bottom of the main frame (31) is constructed using an I-beam base (38), and the generator (33) is fixed on the I-beam base (38).

10. The rear-mounted hole-digging device according to claim 1, characterized in that, The support (40) is a universal adjustable support hinge support (40).

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