Non-unhooking dynamic compactor and working method thereof

Abstract

The utility model provides a kind of non-unhooking dynamic compactor and its working method, including rack, winch being set on rack and hanger arm being hingedly arranged at one side of rack, hanger arm top end is provided with fixed pulley, along the length direction of hanger arm, a plurality of rope pressers are provided, each rope presser includes winding part, locking part, clutch driving part and control part, after the one end of steel wire rope is stretched from winch, in turn, winding part of each rope presser on hanger arm is passed, then again after fixed pulley is passed, it is connected to the top end of rammer;It further includes general control system, general control system controls that rope presser releases the steel wire rope greater than ramming depth length before winch brake and rammer contact ground, to ensure the demand of ramming depth h, to improve the durability of brake system, reduce use cost.

Description

TECHNICAL FIELD

[0001] The present application relates to a construction engineering machinery, in particular to a rammer compactor device, and more particularly to a non-detaching rammer compactor and a working method thereof. BACKGROUND

[0002] The rammer compactor has two types of detaching rammer compactor and non-detaching rammer compactor, and the non-detaching rammer compactor becomes a development direction of the rammer compactor due to its high working efficiency and low personnel arrangement. However, since the rammer falling process of the non-detaching rammer compactor is non-detaching, the control system for the winch brake is required to be high in actual operation: the early brake exists a major hidden danger of air brake and machine and people are destroyed, and the late brake exists the problems of too much wire rope and winch disorder.

[0003] In the prior art, the accurate node of the rammer landing is detected, and then the winch is braked after the rammer lands. Usually, whether the rammer lands is determined by the encoder of the rope wheel and the force condition of the rope. However, in actual situation, due to the relative unevenness of the ground, the deformation of the rope after long time use, the change of the rammer depth and other reasons, the braking time needs to be adjusted frequently, and the adjustment is usually changed with the rammer depth, so that the winch braking system needs to be adjusted with the rammer times and depth, which puts high requirements on the control complexity and durability of the braking system.

[0004] In addition, in the prior art, the zero speed time point of the rammer is detected, and then the winch is braked. In this way, a high-precision speed encoder or a complex rope tension detection device needs to be set. However, due to the unevenness of the construction ground and the increase of the rammer depth, the rammer stroke and the zero speed time node are constantly changing under different ramming strokes, so the braking time of the rammer is uncertain and needs to be obtained temporarily by the sensor detection. Due to the harsh environment of the rammer and the high working frequency of the rammer compactor, the complex sensing detection system must have low durability, and once it fails, machine and people are destroyed.

[0005] Therefore, in order to improve the durability of the winch braking system of the rammer compactor and reduce the use cost, a rammer compactor which can meet the non-detaching braking requirement and significantly improve the durability of the braking system and reduce the use cost needs to be designed. SUMMARY

[0006] The present application aims to provide a non-detaching rammer compactor and a working method thereof to solve the technical problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0008] The utility model provides a kind of non-unhooking dynamic compactor, including frame, setting up on frame winch and being hinged on the side of frame boom, fixed pulley is provided at the top of boom, along the length direction of boom, it is provided with several rope pressers, each rope presser includes winding part, locking part, clutch drive part and control part, winch is provided with wire rope, wire rope one end is stretched out from winch, then, winding part of each rope presser on boom is passed in turn, then, fixed pulley is passed again and is connected to the top of rammer;It further includes general control system, general control system controls that rope presser releases wire rope greater than ramming depth length before winch brake and rammer contact ground.

[0009] Preferably, the winch includes a brake mechanism and a rotary encoder provided at the rotating shaft of the winch, the brake mechanism is braked at the moment when the rammer contacts the ground through the measurement of the rotary encoder.

[0010] Preferably, the winding part of the rope presser includes a lever, the middle of the lever is fixedly provided with an end portion penetrating a driving shaft, both ends of the lever are rotatably provided with a pulley one and a pulley two, respectively, and locking holes are further provided on the lever corresponding to the positions between the pulley one, the pulley two and the driving shaft.

[0011] Preferably, the locking part of the rope presser includes a seat body, the center of the seat body is provided with a center through hole, the driving shaft penetrates the center through hole of the seat body and is rotatably installed on the center through hole, eight center-symmetrical stepped through holes are further provided around the center through hole, the center distance and hole diameter of the small hole side of the stepped through hole correspond to the locking holes on the lever, a locking pin, a compression spring and a locking electromagnet are installed in the stepped through hole, the locking pin can slide in the stepped through hole, the compression spring is provided between the locking pin and the locking electromagnet, the tail of the locking pin is provided with a matching stepped platform of the stepped through hole, and four mounting holes are further provided on the outside of the seat body.

[0012] Preferably, the clutch drive part of the rope presser includes a clutch and a driving mechanism, the clutch has a cylindrical inner cavity, one side end of the clutch is fixedly installed on the end face of the seat body, the driving shaft penetrates out of the center through hole of the seat body and then extends into the inner cavity of the clutch, the other side end of the clutch is installed with the driving mechanism, the driving mechanism has a main shaft, the main shaft also extends into the inner cavity of the clutch, the main shaft is coaxially arranged opposite to the driving shaft, the end of the driving shaft and the end of the main shaft located in the inner cavity are both provided with splines, a disc-shaped spline sleeve is slidably provided in the inner cavity, the spline sleeve is sleeved on the outside of the main shaft and the driving shaft, a tension spring is provided between the spline sleeve and the end face of the inner cavity, a clutch electromagnet is provided between the spline sleeve and the driving mechanism, and a torsion spring is further provided between the driving shaft and the clutch.

[0013] Preferably, the control unit of the rope presser comprises a rope presser controller, the input end of which is connected to the general control system, the output end of which is connected to the eight locking electromagnets of the rope presser, the output end of which is also connected to the clutch electromagnet of the clutch driving unit, and the output end of which is also connected to the driving mechanism.

[0014] Preferably, the general control system comprises a general controller, the output end of which is connected to the rope presser general controller, the rope presser general controller is connected to the rope presser controller of each rope presser respectively, the output end of the general controller is also connected to the brake mechanism of the winch, the input end of the general controller is connected to the rotation encoder of the winch, and a counter is arranged in the general controller for counting the number of ramming times.

[0015] A working method of a non-unhooking heavy compactor, characterized in that:

[0016] Each ramming operation stroke comprises the following working steps:

[0017] S1: the winch hoists the rammer until the highest point, then the general controller controls the brake mechanism to brake the winch, the rotation encoder of the winch records the hoisting stroke length data during the hoisting process, the general controller receives the data of the rotation encoder and calculates the lifting height L of the rammer, and then the general controller calculates the braking time T0 of the brake mechanism through the lifting height L;

[0018] S2: the winch is disconnected from the driving mechanism of the winch, the brake mechanism is released, and the general controller starts timing the release process of the rammer;

[0019] S3: when the general controller reaches 50 milliseconds before T0, the general controller controls the rope presser of different winding lengths to be unlocked step by step through the number of ramming times obtained by the rope presser general controller and the counter;

[0020] S4: the general controller controls the brake mechanism to brake the winch when T0 is reached;

[0021] S5: the general controller controls the brake mechanism to release the brake of the winch 5 seconds after T0, so that the winch can be idled;

[0022] S6: the rope presser general controller controls the rope presser unlocked in step S3 to reset and relock after winding, preparing for the next ramming cycle.

[0023] Preferably, the step of unlocking the rope presser in step S3 is that the rope presser controller controls the clutch electromagnet to be powered on, and then the rope presser controller controls the locking electromagnet corresponding to the angle to be powered on.

[0024] Preferably, the step of relocking after the rope tensioner resets the rope in step S6 is: the rope tensioner controller controls the locking electromagnet corresponding to the angle to be locked to be powered on, then the rope tensioner controller controls the clutch electromagnet to be powered off, then the rope tensioner controller controls the driving mechanism to rotate to make the rope tensioner restore the initial winding angle of the steel wire rope, and then the rope tensioner controller controls the locking electromagnet corresponding to the angle to be locked to be powered off.

[0025] The beneficial effects of the present application are:

[0026] 1、The rotary encoder at the rotating shaft of the winch in the present application can record the rotation amount of the drum of the winch in the winding state or the release state, and then calculate the length of the steel wire rope. The present application is different from the existing technology in that the braking is performed at the time point when the ram contacts the ground, that is, the braking mechanism of the present application brakes the winch at the moment when the ram contacts the ground. Since the rotary encoder of the winch records the lifting height L of the ram each time the ram is lifted to the highest point, the time point when the ram contacts the ground can be easily calculated according to the lifting height L. Therefore, for each ramming stroke, the ram falls from the highest point, the braking mechanism is released from braking to braking again, and the braking mechanism works according to the data detected in advance. The hydraulic system has sufficient reaction and preparation time. In order to ensure the release length of the steel wire rope required by the compression stroke of the ram from the time when the ram contacts the ground to the complete stop, the present application is provided with a rope tensioner. Since the steel wire rope is wound on multiple rope tensioners on the boom, when the rope tensioner rotates to release the winding of the steel wire rope, the steel wire rope will release a certain length. Since the winding angles of the rope tensioners are different, different lengths of the steel wire rope will be released to ensure the demand of the ramming depth h. At the same time, the technical solution of the present application does not need to set a relatively complex and sensitive sensing detection system, and the requirement for the winch control system is also relatively low, which reduces the use and manufacturing cost of the non-unhooked heavy rammer, and makes the winch system not only meet the non-unhooked braking demand, but also significantly improve the durability of the braking system and reduce the use cost.

[0027] 2、The present application sets the rope tensioner to include a winding part, a locking part, a clutch driving part and a control part, so that the rope tensioner can be locked at multiple angles, and the release can be achieved by the on-off of the clutch. When the clutch cuts off the connection between the driving mechanism and the lever, the torsional spring can always drive the pulley one and the pulley two to be in close contact with the steel wire rope due to the presence of the torsional spring. Although the movement of the steel wire rope will make the lever rotate to release the length of the steel wire rope, the steel wire rope will always be limited on the pulley, so that even if a large vibration occurs in the process of the ram compressing the ground at the moment, it will be absorbed by the torsional spring. At the same time, since the rope tensioner is instantaneously unlocked, it will not produce excessive impact on the steel wire rope.

[0028] 3, the application can make the rope presser complete the release of the steel wire rope before the winch is braked, that is, the ram releases the ramming depth distance required by the compression stroke before the compression stroke, which ensures that the braking operation of the winch will not affect the subsequent falling stroke of the ram, and provides safety for the ramming operation of the dynamic compactor. In addition, in step S5, the total controller controls the brake mechanism to release the brake of the winch after 5 seconds at T0, so that the winch can be idling, and then the rope presser is reset and locked again, so that the rope presser has enough release space for the next ramming stroke, and after 5 seconds at T0, the rammer of the dynamic compactor is necessarily stationary, and at this time, the idling of the winch can provide safe rope release operation for the reset of the rope presser. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the dynamic compactor of the application;

[0030] Figure 2 is a schematic diagram of the steel wire rope winding of the dynamic compactor of the application;

[0031] Figure 3 is a schematic diagram of the ramming stroke of the dynamic compactor of the application;

[0032] Figure 4 is a ram falling speed curve diagram of the application;

[0033] Figure 5 is a sectional view of the rope presser structure of the application;

[0034] Figure 6 is a top view of the rope presser of the application;

[0035] Figure 7 is a schematic diagram of the control structure of the application. DETAILED DESCRIPTION

[0036] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0037] As Figure 1 shown is a schematic diagram of the overall structure of the non-unhooking dynamic compactor of the application, including a rack 1, a winch 2 arranged on the rack 1, and a cantilever 3 hingedly arranged on one side of the rack 1, the cantilever 3 is provided with a fixed pulley 6 at the top end, the drum of the winch 2 is wound with a steel wire rope 5, one end of the steel wire rope 5 extends out of the drum of the winch 2, passes through the fixed pulley 6 at the top end of the cantilever 3 along the cantilever 3, and is connected to the top end of a ram 4. As Figure 2As shown, it is a schematic diagram of the steel wire rope winding system of the non-unhooked heavy compaction machine of the present application. The present application is provided with a plurality of rope pressing devices 7 on the jib 3 along the length direction of the jib 3, each of the rope pressing devices 7 comprises a lever 73, the middle part of the lever 73 is rotatably arranged on the jib 3, and the two ends of the lever 73 are rotatably provided with a pulley one 71 and a pulley two 72 respectively. The winch 2 further comprises a brake mechanism 22 and a rotary encoder 21 arranged at the rotating shaft of the winch 2, wherein the brake mechanism 22 adopts the form of hydraulic pump driving brake brake to frictionally brake the brake disc on the winding drum. In the present application, one end of the steel wire rope 5 extends from the winch 2, then successively passes through the pulley one 71 and the pulley two 72 of each rope pressing device 7 on the jib 3, and then passes through the fixed pulley 6 to be connected to the top end of the rammer 4. The winch 2 in the present application has three states, which are winding state, release state and brake state. In the winding state, the brake mechanism 22 of the winch 2 does not work, the motor or hydraulic pump of the winch 2 drives the drum to rotate, and then the steel wire rope 5 is wound to hoist the rammer 4 or to release the steel wire rope 5. In the release state, the brake mechanism 22 of the winch 2 does not work, and the winch 2 is in the idle release state. When the rammer 4 freely falls, the winch 2 will be in this release state. In the brake state, the brake mechanism 22 of the winch 2 brakes the drum to realize the hovering of the rammer 4 in the air or the brake of the drum after the rammer 4 lands. The rotary encoder 21 at the rotating shaft of the winch 2 in the present application can record the rotation amount of the drum of the winch 2 in the winding state or the release state, and then calculate the length of the steel wire rope 5.

[0038] As Figure 3 It is a flow chart of one ramming of the rammer 4 of the heavy compaction machine of the present application. The rammer 4 is first located on the flat ground, the steel wire rope 5 is connected to the top end of the rammer 4, the winch 2 enters the winding state, and then the rammer 4 is lifted to the highest point. In this process, the rotary encoder 21 on the winch 2 detects and records the winding distance of the winch 2, that is, the lifting height L of the rammer 4. When the rammer 4 is lifted to the highest point, the winch 2 enters the brake mode at this time, the brake mechanism 22 brakes the winch 2, at this time, the drum of the winch 2 is disconnected with the transmission mechanism of the motor or hydraulic pump thereof. Subsequently, the winch 2 enters the release state, the brake mechanism 22 releases the brake of the drum of the winch 2, the rammer 4 freely falls and hits the ground, and after the rammer 4 is stationary, the next ramming cycle is entered. From Figure 3 It can be seen from the above that from the rammer 4 contacting the ground to the rammer 4 being stationary, the rammer 4 will form a ramming depth with a height of h on the ground, and the ramming depth h is gradually reduced with the ramming.

[0039] As Figure 4The speed curve of each tamping stroke of the tamper 4 is shown. The tamper 4 freely falls from the highest point with a speed of 0, contacts the ground at the time T0, reaches the maximum speed at the time T0, and the static speed of the tamper 4 decreases to 0 at the time T1. In the prior art, the time point of the time T1 is usually detected by detecting whether the speed of the tamper or the tension of the steel wire rope is unloaded, and then the hoist 2 is braked after the time T1 to avoid excessive release of the steel wire rope due to inertia, but if the braking is too early, there is a major risk of air braking, machine damage and death, and if the braking is too late, there is a problem of the hoist rope being released due to inertia. In order to accurately detect the time T1, a relatively complex and sensitive sensing system needs to be set, and these relatively complex and sensitive sensing systems are prone to failure in harsh working conditions of the rammer compactor and high frequency of use. At the same time, the brake mechanism 22 of the hoist 2 is mostly in the form of hydraulic braking, so the brake mechanism 22 needs to have a high hydraulic response speed to the instantaneous feedback braking instruction, and therefore the hoist control system has a high requirement, which increases the use and manufacturing cost of the non-unhooking rammer compactor.

[0040] In order to solve this technical problem, the present application is different from the prior art in that the braking is performed at the time T0 instead of at the time T1, as shown in Figures 3-4 That is, the brake mechanism 22 of the present application brakes the hoist 2 at the moment when the tamper 4 contacts the ground. Since the lifting height L of the tamper 4 is recorded by the rotary encoder 21 of the hoist 2 every time the tamper 4 is lifted to the highest point, the time point T0 at which the tamper 4 contacts the ground can be easily calculated according to the lifting height L. Therefore, for each tamping stroke, the tamper 4 falls from the highest point, and the brake mechanism 22 releases the brake and then brakes again. The brake mechanism 22 works according to the data detected in advance, and the hydraulic system has enough reaction and preparation time. In order to ensure the release length of the steel wire rope 5 from the time T0 to the time T1 due to the compression stroke of the tamper 4, the present application provides a rope compressor 7. Since the steel wire rope 5 is wound on the plurality of rope compressors 7 on the boom 3, when the rope compressor 7 rotates to release the winding of the steel wire rope 5, the steel wire rope 5 will release a certain length, and different lengths of the steel wire rope 5 will be released due to different winding angles of the rope compressor 7 to ensure the demand for the tampering depth h.

[0041] As shown in Figures 5-6 The structure of the rope compressor 7 of the present application is shown in the figure. The rope compressor 7 includes a winding part, a locking part, a clutch driving part and a control part. The winding part is rotatably installed on the locking part.

[0042] The winding part includes a lever 73, the middle of which is fixed with an end through which a driving shaft 75 is threaded, and both ends of which are respectively rotatably installed with a pulley one 71 and a pulley two 72. The lever 73 is also provided with a locking hole 731 at a position corresponding to the pulley one 71, the pulley two 72 and the driving shaft 75.

[0043] The locking part includes a seat body 74, which is in the shape of a circular truncated cone, and is provided with a central through hole in the center of which the driving shaft 75 is threaded and rotatably installed. Eight stepped through holes 742 are also symmetrically arranged around the central through hole, the center distance and hole diameter of the small hole side of the stepped through hole 742 correspond to the locking hole 731 on the lever 73, and the stepped through hole 742 is installed with a locking pin 7421, a compression spring 7422 and a locking electromagnet 7423. The locking pin 7421 can slide in the stepped through hole 742. The locking pin 7421 and the locking electromagnet 7423 are provided with a compression spring 7422 therebetween. When the locking electromagnet 7423 is powered on, the locking electromagnet 7423 attracts the locking pin 7421 to overcome the elastic force of the compression spring 7422, so that the locking pin 7421 is completely located inside the stepped through hole 742; when the locking electromagnet 7423 is powered off, the locking pin 7421 is separated from the attraction of the locking electromagnet 7423, and the head of the locking pin 7421 is pushed out of the stepped through hole 742 by the compression spring 7422 and enters the inside of the locking hole 731 on the lever 73, thereby locking and positioning the lever. The locking pin 7421 is provided with a tail part matching the stepped platform of the stepped through hole 742, so that the locking pin 7421 is axially positioned when locking the lever 73. Four mounting holes 743 are also provided on the outside of the seat body 74 to mount the rope winder 7 on the boom 3.

[0044] The clutch driving part comprises a clutch 76 and a driving mechanism 77. The clutch 76 is in a cylindrical shape and has a cylindrical inner cavity. The clutch 76 is fixedly installed on the end face of the seat body 74, and the driving shaft 75 passes through the center through hole of the seat body and extends into the inner cavity of the clutch 76. The other end of the clutch 76 is installed with the driving mechanism 77, which can be a driving motor or a hydraulic motor. The driving mechanism 77 has a main shaft 771 which also extends into the inner cavity of the clutch 76 and is coaxially arranged opposite to the driving shaft 75. The end of the driving shaft 75 and the end of the main shaft 771 in the inner cavity are provided with splines. A disc-shaped spline sleeve 762 is slidably arranged in the inner cavity and is sleeved on the outer sides of the main shaft 771 and the driving shaft 75. The spline sleeve 762 can be separated and connected with the driving shaft 75 by sliding in the inner cavity. A tension spring 763 is arranged between the spline sleeve 762 and the end face of the inner cavity, and a clutch electromagnet 761 is arranged between the spline sleeve 762 and the driving mechanism 77. When the clutch electromagnet 761 is powered on, the spline sleeve 762 is attracted to the side of the driving mechanism 77, so that the spline sleeve 762 is separated from the driving shaft 75. When the clutch electromagnet 761 is powered off, the spline sleeve 762 is pulled to the position combined with the driving shaft 75 by the tension spring 763, so that the driving shaft 75 and the main shaft 771 are drivingly connected through the spline sleeve 762. A torsion spring 764 is further arranged between the driving shaft 75 and the clutch 76, which can always make the pulley one 72 and the pulley two 72 contact with the steel wire rope 5.

[0045] The control part comprises a rope presser controller 78 which is a conventional single-chip microcomputer controller. The input end of the rope presser controller 78 is connected with the general control system, and the output end is connected to the eight locking electromagnets 7423 of the rope presser 7 to control the locking operation of the corresponding locking pins 7421 by controlling the on-off of each locking electromagnet 7423. The output end is also connected to the clutch electromagnet 761 of the clutch driving part to control the driving connection of the driving shaft 75 and the main shaft 771 by controlling the on-off of the clutch electromagnet 761. In addition, the output end is also connected to the driving mechanism 77 to control the rotation angle of the main shaft 771 of the driving mechanism 77.

[0046] When the main shaft 771 drives the lever 73 to rotate, because the seat body 74 is provided with eight stepped through holes 742, the rope binder 7 can realize eight angle locking in a week, in each angle locking state, the rope binder controller 78 will lock the corresponding two locking pins 7421 to the lever 73, in different angle locking conditions, the rope binder 7 will wind the steel wire rope 5 to different degrees, and the length of the steel wire rope 5 released by the rope binder 7 is also different, therefore, the rope binder 7 with different locking angles is set on the lifting arm 3 in advance to adapt to the requirement of the ramming depth under different ramming times.

[0047] When the clutch 76 cuts off the connection between the driving mechanism 77 and the lever 73, because the torsional spring 764 exists, the torsional spring 764 can always drive the pulley one 71 and the pulley two 72 to be close to the steel wire rope, although the movement of the steel wire rope 5 will make the lever 73 rotate to release the length of the steel wire rope 5, but the steel wire rope 5 will always be limited on the pulley, so that even if the rammer 4 compresses the ground in the process of the moment, the larger vibration will be absorbed by the torsional spring 764, at the same time, because the rope binder 7 is instantaneously unlocked, the steel wire rope 5 will not be impacted too much.

[0048] As shown in Figure 7 The control system schematic diagram of the present application is shown. The dynamic compactor includes a total controller 8, the output end of the total controller 8 is connected to the rope binder total controller 81, the rope binder total controller 81 is connected to the rope binder controller 78 of each rope binder 7 respectively, the output end of the total controller 8 is also connected to the brake mechanism 22 of the winch 2. The input end of the total controller 8 is connected to the rotary encoder 21 of the winch 2. The above-mentioned total controller 8, rope binder total controller 81 and rope binder controller 78 are all conventional single-chip microcomputer controllers. The total controller 8 receives the data of the rotary encoder 21, and then can calculate the lifting height L of the rammer 4 and the time required for falling, then the total controller 8 controls the braking time of the brake mechanism 22 respectively to realize the release of the rammer 4 and the braking of the winch 2 and other operations. At the same time, the total controller 8 is also provided with a counter for counting the ramming times, the total controller 8 controls the rope binder total controller 81 to calculate the length of the steel wire rope required to be released in this ramming, and then the rope binder total controller 81 controls the rope binder controller 78 of the corresponding winding angle of the rope binder 7 to realize the locking or releasing operation.

[0049] The working steps of the dynamic compactor of the present application are described below from the lifting of the rammer 4 from the dynamic compactor to the falling of the rammer 4 as one working stroke:

[0050] S1: the winch 2 hoists the rammer until the highest point, then the general controller 8 controls the brake mechanism 22 to brake the winch 2, the rotation encoder 21 of the winch 2 records the hoisting length data during the hoisting process, the general controller 8 receives the data of the rotation encoder 21 and calculates the hoisting height L of the rammer 4, then the general controller 8 calculates the braking time T0 of the brake mechanism 22 through the hoisting height L;

[0051] S2: the winch 2 disconnects the connection with the winch driving mechanism, releases the rammer 4 by loosening the brake mechanism 22, and the general controller 8 starts timing the release process of the rammer 4;

[0052] S3: the general controller 8 controls the different winding lengths of the rope clamp 7 to be unlocked step by step through the rope clamp controller 81 and the number of ramming times obtained by the counter 50 milliseconds before T0 is reached;

[0053] S4: the general controller 8 controls the brake mechanism 22 to brake the winch 2 when T0 is reached;

[0054] S5: the general controller 8 controls the brake mechanism 22 to release the brake of the winch 2 5 seconds after T0, so that the winch 2 can idle;

[0055] S6: the rope clamp controller 81 controls the rope clamp 7 unlocked in the step S3 to reset and relock after the rope is collected, preparing for the next ramming cycle.

[0056] The step of unlocking the rope clamp 7 in the above step S3 is that the rope clamp controller 78 controls the clutch electromagnet 761 to be powered on, and then the rope clamp controller 78 controls the locking electromagnet 7423 corresponding to the locking angle to be powered on.

[0057] The step of resetting and relocking the rope clamp 7 after the rope is collected in the above step S6 is that the rope clamp controller 78 controls the locking electromagnet 7423 corresponding to the locking angle to be powered on, then the rope clamp controller 78 controls the clutch electromagnet 761 to be powered off, then the rope clamp controller 78 controls the driving mechanism 77 to rotate to make the rope clamp 7 restore the initial winding angle of the steel wire rope 5, and then the rope clamp controller 78 controls the locking electromagnet 7423 corresponding to the locking angle to be powered off.

[0058] The step S3 can make the rope presser 7 complete the release of the steel wire rope before the winch 2 is braked, that is, the steel wire rope 5 releases the ramming depth distance required by the compression stroke before the rammer 4 is in the compression stroke, and ensures that the braking operation of the winch will not affect the subsequent falling stroke of the rammer, thereby providing safety for the ramming operation of the dynamic compactor. In addition, the total controller 8 controls the brake mechanism 22 to release the brake of the winch 2 after 5 seconds at the T0 time in the step S5, so that the winch 2 can be idled, and then the rope presser is reset and locked again, so that the rope presser has enough release space for the next ramming stroke, and after 5 seconds at the T0 time, the rammer of the dynamic compactor is necessarily stationary, and at this time, the winch 2 is idled to provide safe rope releasing operation for the reset of the rope presser 7.

[0059] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A non-unhooked dynamic compactor, characterized by: The utility model relates to a kind of rammer, including rack, winch set on rack and hanger arm, winch set on rack and hanger arm, hanger arm top end is provided with fixed pulley, along the length direction of hanger arm, it is provided with several rope pressers, each rope presser includes winding part, locking part, clutch drive part and control part, winch is provided with wire rope, wire rope one end from winch after stretching, in turn pass through the winding part of each rope presser on hanger arm, then again pass through fixed pulley after connecting to the top end of rammer;It also includes general control system, general control system controls that rope presser is released greater than rammer depth length wire rope before winch brake and rammer contact ground; The winding part of the rope presser includes a lever, the middle of the lever is fixed with an end portion through a drive shaft, the two ends of the lever are respectively rotatably installed with pulley one and pulley two, and locking holes are further provided on the lever corresponding to the positions between the pulley one, the pulley two and the drive shaft. The locking part of the rope presser includes a seat body, a center through hole is provided in the center of the seat body, the drive shaft passes through the center through hole of the seat body and is rotatably installed on the center through hole, eight center-symmetrically stepped through holes are further provided around the center through hole, the center distance and hole diameter of the small hole side of the stepped through hole correspond to the locking holes on the lever, a locking pin, a compression spring and a locking electromagnet are installed in the stepped through hole, the locking pin can slide in the stepped through hole, the compression spring is provided between the locking pin and the locking electromagnet, the locking pin is provided with a tail portion matched with the stepped platform of the stepped through hole, and four mounting holes are further provided on the outside of the seat body. The clutch drive part of the rope presser includes a clutch and a driving mechanism, the clutch has a cylindrical inner cavity, one side end of the clutch is fixedly installed on the end face of the seat body, the drive shaft passes out of the center through hole of the seat body and then extends into the inner cavity of the clutch, the other side end of the clutch is installed with the driving mechanism, the driving mechanism has a main shaft, the main shaft also extends into the inner cavity of the clutch, the main shaft is coaxially arranged opposite to the drive shaft, the end portion of the drive shaft and the end portion of the main shaft in the inner cavity are provided with splines, a disc-shaped spline sleeve is slidably arranged in the inner cavity, the spline sleeve is sleeved on the outside of the main shaft and the drive shaft, a tension spring is arranged between the spline sleeve and the end face of the inner cavity, a clutch electromagnet is arranged between the spline sleeve and the driving mechanism, and a torsion spring is further arranged between the drive shaft and the clutch. The control part of the rope presser includes a rope presser controller, the input end of the rope presser controller is connected with the general control system, the output end is connected to the eight locking electromagnets of the rope presser, the output end is further connected to the clutch electromagnet of the clutch drive part, and the output end is further connected to the driving mechanism.

2. A non-breakout dynamic compactor as claimed in claim 1, characterised in that: The winch includes a brake mechanism and a rotary encoder arranged at the rotating shaft of the winch, and the brake mechanism brakes the winch at the moment when the rammer contacts the ground through the measurement of the rotary encoder.

3. A non-breakout dynamic compactor as claimed in claim 2, characterised in that: The general control system includes a general controller, the output end of the general controller is connected to the rope presser controller, the rope presser controller is connected to the rope presser controller of each rope presser, the output end of the general controller is further connected to the brake mechanism of the winch, the input end of the general controller is connected to the rotary encoder of the winch, and a counter is further arranged in the general controller for counting the number of ramming.

4. The method of claim 3, wherein each ramming operation comprises the following steps: S1: the winch hoists the ram until the highest point, then the general controller controls the brake mechanism to brake the winch, the rotation encoder of the winch records the hoisting length data during the hoisting process, the general controller receives the data of the rotation encoder and calculates the lifting height L of the ram, then the general controller calculates the braking time T0 of the brake mechanism through the lifting height L; S2: the winch is disconnected from the winch driving mechanism, the brake mechanism is released, and the general controller starts timing the release process of the ram; S3: the general controller controls the different winding lengths of the rope clamp to be unlocked through the rope clamp controller and the number of rams obtained by the counter 50 milliseconds before the braking time T0 is reached; S4: the general controller controls the brake mechanism to brake the winch when the braking time T0 is reached; S5: the general controller controls the brake mechanism to release the winch 5 seconds after the braking time T0, so that the winch can idle; S6: the rope clamp controller controls the rope clamp unlocked in step S3 to reset and relock after the rope is wound, preparing for the next ramming cycle.

5. The method of claim 4, wherein the step of unlocking the rope clamp in step S3 is: the rope clamp controller controls the clutch electromagnet to be powered on, and then controls the locking electromagnet corresponding to the angle to be powered on.

6. The method of claim 5, wherein the step of resetting and relocking the rope clamp after winding the rope in step S6 is: the rope clamp controller controls the locking electromagnet corresponding to the angle to be powered on, then controls the clutch electromagnet to be powered off, then controls the driving mechanism to rotate to make the rope clamp return to the initial winding angle of the steel wire rope, and then controls the locking electromagnet corresponding to the angle to be powered off. ​ ​ ​

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