Simple piling device and method

Abstract

The invention provides a simple piling device and method. The device comprises a main arm frame, an auxiliary arm frame, a rocker arm frame, a hammer body and a rocker arm oil cylinder. The auxiliary arm frame is connected with the main arm frame and can be fixed relative to the main arm frame; the hammer body is arranged on the side face of the auxiliary arm frame in a sliding mode. One end of the rocker arm frame is hinged to the main arm frame, and the other end of the rocker arm frame is connected with the hammer body through a traction rope; one end of the rocker arm oil cylinder is rotationally connected with the main arm frame, and the other end is rotationally connected with the rocker arm frame; the rocker arm oil cylinder stretches out and draws back to drive the rocker arm frame to rotate relative to the main arm frame so as to drive the hammer body to reciprocate through the traction rope. The device is simple in structure and can be directly arranged on engineering machinery, the auxiliary arm frame and the main arm frame are relatively fixed, the rocker arm oil cylinder stretches out and draws back to drive the rocker arm frame to rotate relative to the main arm frame, and the rocker arm frame can swing back and forth around the hinge point of the rocker arm frame and the main arm frame, so that the hammer body is driven to reciprocate up and down, and the piling action is performed.

Description

Technical Field

[0001] The invention belongs to the technical field of pile drivers, and in particular relates to a simple pile driving device and method. Background Art

[0002] A pile driver is a construction equipment used in pile foundation projects. It can drive piles deep into the ground to provide stable support for buildings, bridges, etc. According to the working characteristics of pile drivers, there are generally 6 types, namely: rotary pile drivers, pneumatic hammer pile drivers, hydraulic hammer pile drivers, oil hammer pile drivers, spiral pile drivers, and drop hammer pile drivers.

[0003] A common disadvantage of these types of pile drivers is that they have a complex overall structure, high construction cost, and are too large to meet the requirements of construction in small spaces. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a simple piling device and method, which can greatly reduce equipment costs and labor costs. The piling device is simple to manufacture, convenient to transport, simple to operate, highly efficient in construction, and low in use cost.

[0005] In order to achieve the above purpose / solve the above technical problems, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a simple piling device, comprising a main boom, a secondary boom, a rocker arm, a hammer and a rocker arm cylinder; The auxiliary boom is connected to the main boom and can be relatively fixed to the main boom; The hammer body is slidably arranged on the side of the auxiliary arm frame; One end of the rocker frame is hinged to the main arm frame, and the other end is connected to the hammer body through a traction rope; One end of the rocker cylinder is rotatably connected to the main boom, and the other end is rotatably connected to the rocker frame; the extension and retraction of the rocker cylinder can drive the rocker frame to rotate relative to the main boom, thereby driving the hammer to reciprocate through the traction rope.

[0006] The effect achieved by the above settings: the device has a simple structure and can be directly set on engineering machinery. The auxiliary arm and the main arm are relatively fixed, the rocker arm cylinder is extended and retracted to drive the rocker arm to rotate relative to the main arm, and the rocker arm will swing back and forth around the hinge point with the main arm, thereby driving the hammer to reciprocate up and down, thereby performing piling. The piling device is simple to manufacture, easy to transport, simple to operate, has high construction efficiency and low use cost.

[0007] Furthermore, the device also includes a mounting bracket; the main boom can be fixedly connected to the engineering machinery through the mounting bracket.

[0008] The above settings achieve the following effects: the main boom is connected to the construction machinery, such as the boom of an excavator, through the mounting bracket, so that it can be easily connected to the construction machinery, and is easy to install and flexible to use.

[0009] Furthermore, the main boom is connected to the dipper arm of the excavator via a mounting bracket.

[0010] The effect achieved by the above settings: This device can replace the bucket, is widely applicable to small hydraulic excavators, and can realize construction in small space scenes.

[0011] Furthermore, a secondary boom telescopic cylinder is installed between the secondary boom and the main boom; One end of the telescopic oil cylinder of the auxiliary boom is hinged to the main boom, and the other end is hinged to the auxiliary boom; The extension and retraction of the auxiliary boom telescopic cylinder can drive the auxiliary boom to move relative to the main boom.

[0012] The effect achieved by the above setting: the auxiliary boom can be raised and lowered by extending and retracting the auxiliary boom extension cylinder.

[0013] Furthermore, the rocker arm frame and the main arm frame are hingedly installed through a pin shaft.

[0014] The above settings achieve the following effects: the pin connection is more convenient, firmly fixed, fast and reliable.

[0015] Furthermore, a limit block matching the shape of the auxiliary boom is installed on the main boom; the auxiliary boom is slidably connected to the main boom via the limit block.

[0016] The effect achieved by the above setting is: the limit block installed on the main boom serves as a limit and slide for the auxiliary boom.

[0017] Furthermore, the rocker arm frame is connected to the hammer body through a pulley assembly; The pulley assembly comprises a first pulley fixedly arranged on the top of the rocker frame, a second pulley fixedly arranged on the top of the auxiliary arm frame, and a fixing hole arranged on the auxiliary arm frame; One end of the traction rope is fixedly connected to the fixing hole and passes around the first pulley and the second pulley, and the other end is fixedly connected to the hammer body, so that the hammer body can be moved up and down by changing the angle of the rocker frame.

[0018] The above settings achieve the following effects: pulleys are provided on the top of the auxiliary arm frame and the top of the rocker arm frame; thereby, the two ends connected by the traction rope, the ends of the hammer and the rocker arm frame, move quickly and smoothly, thereby improving the efficiency of piling and reducing capacity loss.

[0019] Furthermore, a guide rail groove is provided on the side of the hammer body in contact with the auxiliary arm frame, and a guide rail matching the shape of the guide rail groove is provided on the side of the auxiliary arm frame in contact with the hammer body; The hammer body is slidably connected to the auxiliary arm frame through the guide rail and the guide rail groove.

[0020] The effect achieved by the above arrangement is that a guide groove is arranged on the hammer body, which can slide up and down along the outer surface of the auxiliary arm, playing both a guiding role and a limiting role, so that the hammer body can avoid lateral interference and accurately guide to the top of the pile body.

[0021] Furthermore, the rocker arm oil cylinder is a single-acting oil cylinder; the rocker arm oil cylinder is connected to the main valve of the oil pump through an electromagnetic reversing valve; the electromagnetic reversing valve is used to realize the switching of the oil supply circuit and the oil unloading circuit of the rocker arm oil cylinder; When the electromagnetic reversing valve is switched to the oil supply circuit, the hydraulic oil flows to the rocker cylinder through the electromagnetic reversing valve, causing the rocker cylinder to extend; When the solenoid reversing valve is switched to the oil unloading circuit, the hydraulic oil of the oil pump main valve no longer enters the rocker arm cylinder, and the hydraulic oil in the rocker arm cylinder returns to the oil tank through the oil unloading pipeline inside the solenoid reversing valve.

[0022] The effect achieved by the above settings is: the rocker arm cylinder is a single-acting cylinder, because the rocker arm cylinder only provides power to the rocker arm when it is extended, the retraction of the cylinder depends on the weight of the hammer, and the drop body is not subject to the resistance of the cylinder when it falls (a single cylinder has only one oil inlet hole, and the cylinder will extend when oil is supplied to the cylinder. When the hammer falls under its own weight, the oil in the cylinder will automatically flow back to the oil tank, thereby ensuring that the hammer is not subject to the resistance of the cylinder during the falling movement). In other words, the single cylinder will only actively use the extension function, and the retraction depends entirely on the weight of the hammer. At the same time, an electromagnetic reversing valve is installed in the oil circuit between the rocker arm cylinder and the main valve. The function of the electromagnetic reversing valve is to realize the switching of oil supply and oil unloading of the rocker arm cylinder.

[0023] Furthermore, the device also includes a controller, which is connected to the electromagnetic reversing valve and is used to control the electromagnetic reversing valve to switch the oil circuit.

[0024] The effect achieved by the above setting is: when the controller controls the electromagnetic reversing valve to switch to the oil supply passage of the cylinder, the hydraulic oil flows to the cylinder through the electromagnetic reversing valve, causing the cylinder to extend, thereby causing the rocker frame to swing clockwise, and the pulley assembly pulls the hammer upward through the wire rope.

[0025] Furthermore, the device also includes a pressure sensor disposed inside the rocker arm cylinder; the pressure sensor is connected to the controller and is used to monitor the hydraulic oil pressure in the rocker arm cylinder; The controller compares the hydraulic oil pressure in the rocker arm cylinder read by the pressure sensor with the preset value. When the hydraulic oil pressure in the rocker arm cylinder reaches the preset value, the controller controls the electromagnetic reversing valve to switch to the oil unloading circuit.

[0026] The effect achieved by the above settings is: when the controller controls the electromagnetic reversing valve to switch to the oil supply passage of the oil cylinder, the hydraulic oil flows to the oil cylinder through the electromagnetic reversing valve, so that the oil cylinder extends, so that the rocker frame swings clockwise, and the pulley assembly pulls the hammer up through the wire rope. When the oil cylinder reaches the maximum stroke, the ECU (controller) reads the pressure in the oil circuit of the oil cylinder by the pressure sensor and compares it with the system preset value. When the preset value is reached, the ECU (controller) controls the electromagnetic reversing valve to switch the oil circuit. The ECU (controller) controls the switch to the YA2 state, that is, the oil supply to the oil cylinder no longer enters the oil cylinder, and the oil cylinder hole directly passes through the oil unloading pipeline inside the reversing valve to return to the oil tank. The oil cylinder quickly retracts under the weight of the hammer, and the hydraulic oil in the oil cylinder returns to the hydraulic oil tank through the oil unloading pipeline inside the electromagnetic reversing valve. The hammer falls freely downward along the auxiliary arm frame under the action of gravity, thereby hitting the pile body and smashing it into the ground.

[0027] Furthermore, after the solenoid reversing valve is switched to the oil unloading circuit, the controller obtains the hydraulic oil pressure in the rocker cylinder read by the pressure sensor and the accumulated time after the cumulative reversing begins. When the accumulated time after the reversal reaches the preset reversing time and the hydraulic oil pressure in the pressure sensor rocker cylinder is lower than the preset value, the controller controls the reversal of the electromagnetic reversing valve again, switches to the oil supply circuit, extends the rocker cylinder again, and clears the accumulated time after the reversal.

[0028] The effect achieved by the above settings is: the controller sets a fixed time (calculates the time required for the hammer to fall freely to the maximum height in advance and writes it into the ECU (controller)). After the solenoid reversing valve changes direction for the first time, the controller will detect the pressure of the pressure sensor and the written time for judgment. When the written time value is reached and the pressure of the pressure sensor is lower than the preset value, the control will reverse the solenoid reversing valve again, so that the rocker arm cylinder is extended again, and the hammer is pulled to the highest position again, and then the step is repeated to achieve the piling operation.

[0029] In the present application, the preset value of the hydraulic oil pressure in the rocker cylinder is generally set to the system overflow pressure.

[0030] Furthermore, the preset switching time is obtained by calculating the time required for the hammer to fall freely at the maximum height.

[0031] Furthermore, the auxiliary boom cylinder is a double-acting cylinder.

[0032] The effect achieved by the above setting is: the double-acting cylinder has two oil holes. When oil enters the large cavity, the cylinder extends, and when oil enters the small cavity, the cylinder retracts. The stroke control of the double-acting cylinder is more precise, and a more precise height fixation can be achieved without being easily changed.

[0033] Adjust the position of the excavator working device, place the device upright, and adjust the extension length of the auxiliary boom cylinder (the lower part of the main boom is processed with serrations to facilitate insertion into the ground and stabilize the device); Operate the rocker arm cylinder oil supply device, ECU (controller) controls the electromagnetic reversing valve to switch to YA1 state, that is, the cylinder oil supply passage, hydraulic oil flows to the cylinder through the electromagnetic reversing valve, so that the cylinder extends, so that the rocker arm frame swings clockwise, and the pulley assembly pulls the hammer upward through the wire rope (forming a cargo ship system device). When the cylinder reaches the maximum stroke, ECU (controller) reads the pressure in the cylinder oil circuit by the pressure sensor and compares it with the system preset value. When the preset value is reached, ECU (controller) controls the electromagnetic reversing valve to switch the oil circuit. ECU (controller) controls to switch to YA2 state, that is, the oil supply to the cylinder no longer enters the cylinder, and the cylinder hole returns to the oil tank through the internal oil circuit of the reversing valve directly to the oil unloading pipeline. The cylinder retracts rapidly under the weight of the hammer, and the hydraulic oil in the cylinder returns to the hydraulic oil tank through the oil unloading pipeline inside the electromagnetic reversing valve.

[0034] In a second aspect, the present invention provides a simple piling method, based on the simple piling device described in the first aspect, comprising the following steps: Connect the main boom to the execution end of the construction machinery; Fix and lock the main boom and auxiliary boom; The rocker cylinder is driven to extend and retract back and forth, driving the rocker frame to swing, thereby driving the hammer body to reciprocate up and down, thereby performing piling.

[0035] Furthermore, the rocker arm oil cylinder is connected to the main valve of the oil pump through an electromagnetic reversing valve; the electromagnetic reversing valve is used to realize the switching of the oil supply circuit and the oil unloading circuit of the rocker arm oil cylinder; When the electromagnetic reversing valve is switched to the oil supply circuit, the hydraulic oil flows to the rocker cylinder through the electromagnetic reversing valve, causing the rocker cylinder to extend; When the electromagnetic reversing valve is switched to the oil unloading circuit, the hydraulic oil of the oil pump main valve no longer enters the rocker arm cylinder, and the hydraulic oil in the rocker arm cylinder returns to the oil tank through the oil unloading pipeline inside the electromagnetic reversing valve; The method further comprises: Get the hydraulic oil pressure in the rocker cylinder; The hydraulic oil pressure in the rocker arm cylinder is compared with the preset value. When the hydraulic oil pressure in the rocker arm cylinder reaches the preset value, the electromagnetic reversing valve is controlled to switch to the oil unloading circuit.

[0036] Furthermore, the method further comprises: After switching to the oil unloading circuit, obtain the hydraulic oil pressure in the rocker cylinder read by the pressure sensor and the accumulated time after the cumulative reversal begins. When the accumulated time after the solenoid reversing valve switches to the preset switching time and the hydraulic oil pressure in the rocker arm cylinder of the pressure sensor is lower than the preset value, the controller controls the solenoid reversing valve to switch to the oil supply circuit, so that the rocker arm cylinder extends again, and the accumulated time after the switching is cleared.

[0037] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the design of a simple piling device through simple structural devices and principles. The main structure is welded from common plates, and the oil cylinder, reversing solenoid valve, pressure sensor, and ECU (controller) controller used are also common devices, which are easy to obtain. Most importantly, the invented device can be widely adapted to small hydraulic excavators and can be used for construction in narrow space scenes.

[0038] The rocker arm device of the present invention adopts a single-acting oil cylinder, so that the falling pile driving process of the vertical body utilizes the gravitational potential energy of the free-falling process of the vertical body to drive the pile body into the ground. The rocker arm single-acting oil cylinder can also be replaced with a double-acting oil cylinder, and the lifting and falling of the hammer body can be realized by controlling the extension and contraction of the oil cylinder, thereby realizing the pile driving process. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of the device of the present invention; Figure 2 It is a working principle diagram of the present invention; Figure 3 It is a schematic diagram of the working steps of the present invention; Figure 4 It is a schematic diagram of the oil circuit of the rocker cylinder of the present invention.

[0040] In the figure: 1. hammer body; 2. auxiliary arm frame; 3. limit block assembly; 4. mounting bracket; 5. main arm frame; 6. cylinder mounting pin; 7. rocker arm cylinder; 8. rocker arm mounting pin; 9. rocker arm frame; 10. pulley mounting bolt; 11. pulley; 12. wire rope; 13. wire rope fixing pin; 14. pulley guard plate; 15. auxiliary arm frame cylinder. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0042] In the description of this embodiment, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this embodiment 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 a limitation on this embodiment. Embodiment 1:

[0043] This embodiment provides a simple piling device, such as Figure 1 As shown, it includes a main boom 5, a secondary boom 2, a rocker frame 9, a hammer 1 and a rocker cylinder 7; The auxiliary boom 2 is connected to the main boom 5 and can be relatively fixed to the main boom 5; The hammer body 1 is slidably arranged on the side of the auxiliary arm frame 2; One end of the rocker arm frame 9 is hinged to the main arm frame 5, and the other end is connected to the hammer body 1 through a traction rope; One end of the rocker cylinder 7 is rotatably connected to the main boom 5, and the other end is rotatably connected to the rocker frame 9; the extension and retraction of the rocker cylinder 7 can drive the rocker frame 9 to rotate relative to the main boom 5, thereby driving the hammer body 1 to reciprocate through the traction rope.

[0044] Implementation principle: The device of this embodiment has a simple structure and can be directly set on engineering machinery. The auxiliary arm 2 is relatively fixed to the main arm 5, and the rocker cylinder 7 is extended and retracted to drive the rocker frame 9 to rotate relative to the main arm 5. The rocker frame 9 will swing back and forth around the hinge point with the main arm 5, thereby driving the hammer body 1 to reciprocate up and down, thereby performing a piling action. The piling device is simple to manufacture, convenient to transport, simple to operate, has high construction efficiency, and low cost of use. Embodiment 2:

[0045] The present embodiment provides a simple piling device, which comprises a main boom 5, a secondary boom 2, a limit block assembly 3, a rocker frame 9, a mounting bracket 4, a secondary boom cylinder 15, a rocker cylinder 7, a hammer 1, a pulley assembly 11, and a steel wire rope 12.

[0046] The main boom 5 is connected to the dipper arm of the excavator through the mounting bracket 4 to replace the bucket. A telescopic oil cylinder of the auxiliary boom 2 is installed between the auxiliary boom 2 and the main boom 5. The extension and retraction of the oil cylinder can realize the raising and lowering of the auxiliary boom 2. At the same time, the limit block assembly 3 installed on the main boom 5 plays a role of limiting and sliding the auxiliary boom 2.

[0047] The rocker frame 9 and the main arm frame 5 are hingedly installed, and a rocker cylinder 7 is installed at the same time. The angle of the rocker frame 9 is changed by the extension and contraction of the rocker cylinder 7. A guide groove is arranged on the hammer body 1, which can slide up and down along the outer surface of the auxiliary arm frame 2. A pulley assembly 11 is installed on the top of the rocker frame 9 and the auxiliary arm frame 2. At the same time, there is a fixing hole on the auxiliary arm frame 2. One end of the wire rope 12 is fixed to the fixing hole of the auxiliary arm frame 2, and the other end is fixed to the hammer body 1. It passes through the two pulley assemblies 11 in the middle, and the hammer body 1 is moved up and down by changing the angle of the rocker frame 9. The main structure of the pile driving device is as follows: Figure 1 shown.

[0048] The rocker frame 9 and the main arm frame 5 are hingedly installed through the rocker mounting pin 8, and a rocker cylinder 7 is installed at the same time. One end of the hydraulic cylinder is connected to the main arm frame 5 through the cylinder mounting pin 6, and the other end is fixed to the rocker frame 9. The rocker frame 9 can be driven to rotate along the rocker mounting pin 8 through the extension and retraction of the cylinder, thereby realizing the change of angle.

[0049] Pulley assemblies 11 are installed on the top of the rocker arm and the jib, and there is a fixing hole on the jib. One end of the wire rope 12 is fixed to the fixing hole of the jib frame 2, and the other end is fixed to the hammer body 1. It passes through the two pulley assemblies 11 in the middle, and the hammer body 1 is moved up and down by changing the angle of the rocker arm.

[0050] like Figure 1 As shown, the pulley assembly includes a first pulley fixedly arranged on the top of the rocker frame 7, a second pulley fixedly arranged on the top of the auxiliary arm frame 2, and a fixing hole arranged on the auxiliary arm frame 2; two pulleys 11 are respectively fixed to the top of the rocker frame 9 and the auxiliary arm frame 2 by pulley mounting bolts 10, the top pulley (second pulley) of the auxiliary arm frame 2 is in the form of a fixed pulley, and the top pulley (first pulley) of the rocker frame 9 is in the form of a movable pulley, and is installed and limited by a pulley guard plate 14, thereby improving the fixing stability of the pulley assembly.

[0051] Preferably, a wire rope fixing pin 13 is provided at the fixing hole position of the auxiliary arm frame 2 for fixing one end of the wire rope 12. In this embodiment, a movable pulley is combined with a static pulley to form a pulley structure that is more labor-saving and can more easily lift a heavier hammer body 1.

[0052] like Figure 2As shown, the rocker cylinder 7 and the auxiliary arm frame cylinder 15 are controlled by different main valves, wherein the rocker cylinder 7 is a single-acting cylinder, because the rocker cylinder 7 only provides power to the rocker frame 9 when it is extended, the retraction of the cylinder depends on the gravity of the hammer body 1, and the vertical body is not subject to the resistance of the rocker frame 9 when it falls (a single cylinder has only one oil inlet hole, and the cylinder will extend when oil is supplied to the cylinder. When the hammer body 1 falls under its own weight, the oil in the cylinder will automatically flow back to the oil tank, thereby ensuring that the hammer body 1 is not subject to the resistance of the cylinder during the falling movement.), in other words, the single cylinder will only actively use the extension function, and the retraction depends entirely on the dead weight of the vertical body. At the same time, an electromagnetic reversing valve and a pressure sensor are installed in the oil circuit between the rocker cylinder 7 and the main valve. The electromagnetic reversing valve is used to realize the switching of oil supply and oil unloading of the rocker cylinder 7, and the pressure sensor is used to monitor the hydraulic oil pressure in the rocker cylinder 7.

[0053] The auxiliary arm frame oil cylinder 15 is a double-acting oil cylinder with two oil holes. When oil enters the large cavity, the oil cylinder extends, and when oil enters the small cavity, the oil cylinder retracts.

[0054] The specific piling process is as follows: Figure 3 As shown in the figure, the position of the excavator working device is adjusted to place the device upright, and the extension length of the auxiliary boom cylinder 15 is adjusted (the lower part of the main boom 5 is processed with a serrated shape to facilitate insertion into the ground and play a role in stabilizing the device).

[0055] Specific hydraulic oil circuit Figure 4 As shown, the rocker cylinder 7 is connected to the main pump and the oil tank through the electromagnetic reversing valve. When the oil supply device of the rocker cylinder 7 is operated, the ECU (controller) controls the electromagnetic reversing valve to switch to the YA1 state, that is, the oil supply passage of the cylinder. The hydraulic oil flows to the cylinder through the electromagnetic reversing valve, so that the cylinder extends, thereby causing the rocker frame 9 to swing clockwise, and the pulley assembly 11 pulls the hammer 1 upward through the wire rope 12 (forming a cargo ship system device). When the cylinder reaches the maximum stroke, the ECU (controller) compares the pressure in the cylinder oil circuit read by the pressure sensor with the system preset value. When the preset value is reached, the ECU (controller) controls the electromagnetic reversing valve to switch the oil circuit. The ECU (controller) controls to switch to the YA2 state, that is, the oil supply to the cylinder no longer enters the rocker cylinder 7, and the cylinder hole directly passes through the internal oil circuit of the reversing valve to the oil unloading pipeline back to the oil tank. The rocker cylinder 7 quickly retracts under the gravity of the hammer 1, and the hydraulic oil in the rocker cylinder 7 returns to the hydraulic oil tank through the internal oil unloading pipeline of the electromagnetic reversing valve. The hammer body 1 falls freely downward along the auxiliary arm frame 2 under the action of gravity, thereby hitting the pile body and hammering it into the ground.

[0056] The ECU (controller) sets a fixed time (calculate the time required for the hammer 1 to fall freely to the maximum height in advance and write it into the ECU (controller)). After the electromagnetic reversing valve changes direction for the first time, the ECU (controller) will detect the pressure of the pressure sensor and the accumulated time after the reversal for judgment. When the accumulated time after the reversal reaches the written time value and the pressure of the pressure sensor is lower than the preset value (the preset value of the hydraulic oil pressure in the rocker arm cylinder in this application is generally set to the system overflow pressure), the control will reverse the electromagnetic reversing valve again, so that the rocker arm cylinder 7 is extended again, and the hammer 1 is pulled to the highest position again, and then the step is repeated to achieve the piling operation. Embodiment 3:

[0057] This embodiment provides a simple piling method, based on the simple piling device described in the second embodiment, comprising the following steps: Adjust the position of the excavator working device to place the device upright, and adjust the extension length of the auxiliary arm cylinder 15; Connect the main boom 5 to the execution end of the engineering machinery; Fix and lock the main boom 5 and the auxiliary boom 2; The rocker cylinder 7 is driven to extend and retract back and forth, driving the rocker frame 9 to swing, thereby driving the hammer body 1 to reciprocate up and down, thereby performing piling.

[0058] The rocker arm oil cylinder 7 is connected to the oil pump main valve through an electromagnetic reversing valve; the electromagnetic reversing valve is used to realize the switching of the oil supply oil circuit and the oil unloading oil circuit of the rocker arm oil cylinder 7; When the electromagnetic reversing valve is switched to the oil supply circuit, the hydraulic oil flows to the rocker arm cylinder 7 through the electromagnetic reversing valve, causing the rocker arm cylinder 7 to extend; When the electromagnetic reversing valve is switched to the oil unloading circuit, the hydraulic oil of the oil pump main valve no longer enters the rocker arm cylinder 7, and the hydraulic oil in the rocker arm cylinder 7 returns to the oil tank through the oil unloading pipeline inside the electromagnetic reversing valve; Obtaining the hydraulic oil pressure in the rocker cylinder 7; The hydraulic oil pressure in the rocker arm cylinder 7 is compared with a preset value. When the hydraulic oil pressure in the rocker arm cylinder 7 reaches the preset value, the electromagnetic reversing valve is controlled to switch to the oil unloading circuit.

[0059] After switching to the oil unloading circuit, the hydraulic oil pressure in the rocker cylinder 7 and the accumulated time after the cumulative reversal are obtained from the pressure sensor. When the accumulated time after the solenoid reversing valve switches to the preset switching time and the hydraulic oil pressure in the pressure sensor rocker cylinder 7 is lower than the preset value, the controller controls the solenoid reversing valve to switch to the oil supply circuit, so that the rocker cylinder 7 extends again, and the accumulated time after the switching is cleared.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, and in the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A simple piling device, characterized in that: It includes main boom, auxiliary boom, rocker arm, hammer and rocker arm cylinder; The auxiliary boom is connected to the main boom and can be relatively fixed to the main boom; The hammer body is slidably arranged on the side of the auxiliary arm frame; One end of the rocker frame is hinged to the main arm frame, and the other end is connected to the hammer body through a traction rope; One end of the rocker cylinder is rotatably connected to the main boom, and the other end is rotatably connected to the rocker frame; the extension and retraction of the rocker cylinder can drive the rocker frame to rotate relative to the main boom, thereby driving the hammer to reciprocate through the traction rope.

2. The simple piling device according to claim 1, characterized in that: The device also includes a mounting bracket; the main boom can be fixedly connected to the engineering machinery through the mounting bracket.

3. The simple piling device according to claim 1, characterized in that: A secondary boom telescopic cylinder is installed between the secondary boom and the main boom; One end of the telescopic oil cylinder of the auxiliary boom is hinged to the main boom, and the other end is hinged to the auxiliary boom; The extension and retraction of the auxiliary boom telescopic cylinder can drive the auxiliary boom to move relative to the main boom.

4. The simple piling device according to claim 1, characterized in that: The main boom is provided with a limit block matching the shape of the auxiliary boom; the auxiliary boom is slidably connected to the main boom via the limit block.

5. The simple piling device according to claim 1, characterized in that: The rocker frame is connected to the hammer body through a pulley assembly; The pulley assembly comprises a first pulley fixedly arranged on the top of the rocker frame, a second pulley fixedly arranged on the top of the auxiliary arm frame, and a fixing hole arranged on the auxiliary arm frame; One end of the traction rope is fixedly connected to the fixing hole and passes around the first pulley and the second pulley, and the other end is fixedly connected to the hammer body, so that the hammer body can be moved up and down by changing the angle of the rocker frame.

6. The simple piling device according to claim 1 or 5, characterized in that: A guide rail groove is provided on the side of the hammer body that contacts the auxiliary arm frame, and a guide rail matching the shape of the guide rail groove is provided on the side of the auxiliary arm frame that contacts the hammer body; The hammer body is slidably connected to the auxiliary arm frame through the guide rail and the guide rail groove.

7. The simple piling device according to claim 1, characterized in that: The rocker arm oil cylinder is a single-acting oil cylinder; the rocker arm oil cylinder is connected to the main valve of the oil pump through an electromagnetic reversing valve; the electromagnetic reversing valve is used to realize the switching of the oil supply circuit and the oil unloading circuit of the rocker arm oil cylinder; When the electromagnetic reversing valve is switched to the oil supply circuit, the hydraulic oil flows to the rocker cylinder through the electromagnetic reversing valve, causing the rocker cylinder to extend; When the solenoid reversing valve is switched to the oil unloading circuit, the hydraulic oil of the oil pump main valve no longer enters the rocker arm cylinder, and the hydraulic oil in the rocker arm cylinder returns to the oil tank through the oil unloading pipeline inside the solenoid reversing valve.

8. The simple piling device according to claim 7, characterized in that: The device further comprises a controller, which is connected to the electromagnetic reversing valve and is used to control the electromagnetic reversing valve to switch the oil circuit; The device further comprises a pressure sensor disposed inside the rocker arm cylinder; the pressure sensor is connected to the controller and is used to monitor the hydraulic oil pressure in the rocker arm cylinder; The controller compares the hydraulic oil pressure in the rocker arm cylinder read by the pressure sensor with the preset value. When the hydraulic oil pressure in the rocker arm cylinder reaches the preset value, the controller controls the electromagnetic reversing valve to switch to the oil unloading circuit; After the solenoid reversing valve is switched to the oil unloading circuit, the controller obtains the hydraulic oil pressure in the rocker cylinder read by the pressure sensor and the accumulated time after the cumulative reversing begins. When the accumulated time after the reversal reaches the preset reversal time and the hydraulic oil pressure in the rocker arm cylinder of the pressure sensor is lower than the preset value, the controller controls the electromagnetic reversing valve to be reversed again, switches to the oil supply circuit, extends the rocker arm cylinder again, and resets the accumulated time after the reversal; The preset switching time is obtained by calculating the time required for the hammer to fall freely at the maximum height.

9. A simple piling method, characterized in that: The simple piling device according to claim 1 comprises the following steps: Connect the main boom to the execution end of the construction machinery; Fix and lock the main boom and auxiliary boom; The rocker cylinder is driven to extend and retract back and forth, driving the rocker frame to swing, thereby driving the hammer body to reciprocate up and down, thereby performing piling.

10. The simple piling method according to claim 9, characterized in that: The rocker arm oil cylinder is connected to the main valve of the oil pump through an electromagnetic reversing valve; the electromagnetic reversing valve is used to realize the switching of the oil supply circuit and the oil unloading circuit of the rocker arm oil cylinder; When the electromagnetic reversing valve is switched to the oil supply circuit, the hydraulic oil flows to the rocker cylinder through the electromagnetic reversing valve, causing the rocker cylinder to extend; When the electromagnetic reversing valve is switched to the oil unloading circuit, the hydraulic oil of the oil pump main valve no longer enters the rocker arm cylinder, and the hydraulic oil in the rocker arm cylinder returns to the oil tank through the oil unloading pipeline inside the electromagnetic reversing valve; The method further comprises: Get the hydraulic oil pressure in the rocker cylinder; The hydraulic oil pressure in the rocker arm cylinder is compared with the preset value. When the hydraulic oil pressure in the rocker arm cylinder reaches the preset value, the electromagnetic reversing valve is controlled to switch to the oil unloading circuit; After switching to the oil unloading circuit, obtain the hydraulic oil pressure in the rocker cylinder read by the pressure sensor and the accumulated time after the cumulative reversal begins. When the accumulated time after the solenoid reversing valve switches to the preset switching time and the hydraulic oil pressure in the rocker arm cylinder of the pressure sensor is lower than the preset value, the controller controls the solenoid reversing valve to switch to the oil supply circuit, so that the rocker arm cylinder extends again, and the accumulated time after the switching is cleared.

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