Automatic unhooking dynamic compactor capable of adjusting rammer falling distance and working method of automatic unhooking dynamic compactor

Abstract

The invention discloses an automatic unhooking dynamic compaction machine with a rammer falling distance adjusting function and a working method of the automatic unhooking dynamic compaction machine. The automatic unhooking dynamic compaction machine comprises a machine body, an arm frame, a first cable mechanism, a second cable mechanism, a locking control mechanism and a rammer. The first cable mechanism comprises a first winch set, a first cable and a first fixed pulley mechanism, one end of the first cable is wound on the first winch, and the other end of the first cable is connected with the top end of the locking control mechanism; the second cable mechanism comprises a second winch unit and a second cable, one end of the second cable is wound on the second winch unit, and the other end of the second cable penetrates through the locking control mechanism and hoists the rammer; the locking control mechanism comprises a control box body, a second fixed pulley mechanism, a first hydraulic oil cylinder and a second hydraulic oil cylinder. The device has the advantages that the tamper falling distance is adjusted through the two sets of cable mechanisms, and large-range coarse adjustment and fine adjustment can be achieved; the first hydraulic oil cylinder and the second hydraulic oil cylinder which abut against each other oppositely can clamp and lock the second cable temporarily.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering construction, and in particular relates to an automatic unhooking tamping machine with adjustable tamping hammer drop distance and a working method thereof. Background Art

[0002] A dynamic compactor is a machine used for compacting foundations. The rammer is lifted to a specified height through a lifting device and then released. The huge impact force generated when the rammer falls to the ground acts on the foundation, causing a large deformation of the foundation, thereby enhancing its bearing capacity.

[0003] During foundation compaction, the release of the rammer is achieved through a unhooker. Currently, most unhookers control the release of the rammer through an opening and closing hook mechanism. However, as most rammers are heavy components weighing from several tons to tens of tons, sudden release will cause great damage to the hook mechanism and generate an upward rebound force at the moment of release, causing the main structure of the rammer to shake.

[0004] In addition, at present, a unified rammer drop distance is generally used for construction within the scope of the construction site. However, in fact, within the same construction site, the rammer drop distance can be adjusted accordingly based on different geological conditions and stratum distribution, so as to better compact and improve the stratum of the construction site. Summary of the invention

[0005] The object of the present invention is to provide an automatic unhooking rammer with adjustable rammer drop distance and a working method thereof in light of the deficiencies in the above-mentioned prior art. The automatic unhooking rammer is equipped with two sets of cable mechanisms to achieve coarse and fine adjustment of the rammer drop distance, and the rammer can automatically fall after fine adjustment through a locking control mechanism, and the two-stage cable mechanism can quickly absorb the shaking caused by the sudden release of the rammer.

[0006] The purpose of the present invention is achieved by the following technical solutions: An automatic unhooking tamping machine with adjustable tamping hammer drop distance, characterized in that the automatic unhooking tamping machine comprises a machine body, an arm, a first cable mechanism, a second cable mechanism, a locking control mechanism and a tamping hammer; The first cable mechanism comprises a first hoisting unit, a first cable and a first fixed pulley mechanism, wherein the first hoisting unit is fixedly arranged on the rotatable platform of the machine body, and the first fixed pulley mechanism is composed of a plurality of first fixed pulleys and the first fixed pulleys are arranged along the upper part and the top end of the boom; one end of the first cable is wound around the first hoisting unit, and the other end of the first cable is guided by the first fixed pulley mechanism and extends downward to be connected with the top end of the locking control mechanism; The second cable mechanism includes a second hoisting unit and a second cable, wherein the second hoisting unit is fixedly arranged at the lower end of the boom, one end of the second cable is wound around the second hoisting unit, and the other end of the second cable passes through the locking control mechanism and hoists the rammer; The locking control mechanism includes a control box body, a second fixed pulley mechanism, a first hydraulic cylinder and a second hydraulic cylinder. The control box body is suspended by the first cable. The second fixed pulley mechanism includes a plurality of second fixed pulleys and the second fixed pulleys are arranged at the top and inside of the control box body. The first hydraulic cylinder is arranged below the second fixed pulley inside the control box body and is located on one side. The second hydraulic cylinder is arranged below the first hydraulic cylinder and is located on the other side opposite to the first hydraulic cylinder.

[0007] The second winch group includes a primary winch and a secondary winch, and the primary winch and the secondary winch are arranged in sequence at the bottom of the boom, one end of the second cable is wound around the secondary winch, and the other end of the second cable is wound around the secondary winch and extends to the primary winch for winding, and then extends upward and enters the control box body through the guidance of the second fixed pulley mechanism, the rotating shaft of the primary winch is driven by a slidable motor, the base of the slidable motor is mounted on slide rails on both sides, and the slidable motor is driven to slide by a first hydraulic telescopic rod and a second hydraulic telescopic rod respectively arranged on both sides to realize the clutch between the output shaft end of the slidable motor and the rotating shaft end of the primary winch.

[0008] A first pressing roller is disposed at the end of the first hydraulic cylinder, and a second pressing roller is disposed at the end of the second hydraulic cylinder. A plurality of irregular grooves are formed on the surfaces of the first pressing roller and the second pressing roller.

[0009] The top surface of the control box body is provided with a plurality of lifting ears at intervals, and the lower end of the first cable is forked into a plurality of cables and connected to the lifting ears.

[0010] A working method involving any of the automatic unhooking tamping machines with adjustable tamping hammer drop distance, characterized in that the working method comprises the following steps: S1: Conduct geological survey of the construction site and draw a soil strength plan of the construction site based on the distribution of the strata of the surveyed construction site; S2: Determine the drop distance of each compaction point based on the soil strength plane diagram of the construction site and draw a schematic diagram of the drop distance of the compaction point and the number of compaction times; S3: driving the installed compaction machine body to the corresponding compaction point, so that the locking control mechanism clamps and locks the second cable for hoisting the compaction hammer, and then controlling the locking control mechanism and the compaction hammer hoisted by the first cable to a preset drop height through the first winch unit; S4: Stop the rotation of the first hoisting unit and lock it, control the locking control mechanism to release the clamping and locking of the second cable, and gradually release the second cable through the second hoisting unit to achieve fine adjustment of the drop distance of the rammer; after completing the fine adjustment of the drop distance of the rammer, control the first hydraulic cylinder and the second hydraulic cylinder in the locking control mechanism to push toward each other, so that the first clamping roller on the first hydraulic cylinder and the second clamping roller on the second hydraulic cylinder clamp and clamp the second cable; then control the first hydraulic telescopic rod and the second hydraulic telescopic rod in the second hoisting unit to drive the sliding of the slidable motor on the slide rails on both sides, so that the output shaft end of the slidable motor is separated from the rotating shaft end of the first hoist in the second hoisting unit; S5: Control the locking control mechanism to release the clamping and locking of the second cable, and the rammer falls freely to ram the ground. During the free fall of the rammer, the second cable rotates freely on the primary winch; S6: Control the first hydraulic telescopic rod and the second hydraulic telescopic rod to drive the output shaft end of the slidable motor to engage with the rotating shaft end of the primary hoist, then lift the rammer to the height of the locking control mechanism through the second hoisting unit and clamp and lock the second cable through the locking control mechanism; S7: Repeat steps S3-S6, and repeat this process over and over again.

[0011] The advantages of the present invention are: (1) The adjustment of the rammer drop distance adopts two sets of cable mechanisms, which can realize a wide range of coarse adjustment and fine adjustment, and realize the free adjustment of the rammer drop distance; (2) by providing a first hydraulic cylinder and a second hydraulic cylinder capable of pressing toward each other in the locking control mechanism, the second cable is temporarily clamped and locked, so as to facilitate the clutch between the output shaft end of the slidable motor and the rotating shaft end of the first winch in the second winch assembly; (3) The combination of the two sets of cable mechanisms and the locking control mechanism can absorb the upward rebound force generated when the locking control mechanism lowers the rammer through the locking control mechanism and the first cable connected to it. At the same time, the second cable connected to the rammer will also absorb the rebound force, thereby reducing the shaking effect on the machine body and the boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of an automatic unhooking tamping machine with adjustable tamping hammer drop distance in the present invention; Figure 2 It is a partial enlarged detailed view of the locking control mechanism of the present invention without clamping the second cable; Figure 3 It is a partial enlarged detailed view of the locking control mechanism clamping the second cable in the present invention; Figure 4 It is the plan layout diagram of the second hoisting unit in the present invention. DETAILED DESCRIPTION

[0013] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: like Figure 1-4 , the marks in the figure are: body 1, rotatable platform 1a, boom 1b, first winch unit 2, first fixed pulley mechanism 3, first cable 4, second winch unit 5, first-stage winch 5a, second-stage winch 5b, first hydraulic telescopic rod 5c, motor 5d, motor 5e, second hydraulic telescopic rod 5f, slide rail 5g, second cable 6, locking control mechanism 7, control box body 7a, lifting ear 7b, first hydraulic cylinder 7c, second hydraulic cylinder 7d, first clamping roller 7e, second clamping roller 7f, rammer 8, second fixed pulley mechanism 9, first fixed pulley 9a, second fixed pulley 9b.

[0014] Example: Figure 1 , 2 As shown in Figures 3 and 4, the present embodiment specifically relates to an automatic unhooking rammer with adjustable rammer drop distance. The automatic unhooking rammer comprises a machine body 1, a first cable mechanism, a second cable mechanism, a locking control mechanism 7 and a rammer 8. A rotatable platform 1a and an arm 1b are provided on the machine body 1.

[0015] like Figure 1 , 2 , 3, and 4, the first cable mechanism includes a first hoisting unit 2, a first fixed pulley mechanism 3, and a first cable 4. The first hoisting unit 2 is composed of a hoist and a motor driving the hoisting unit to rotate. The first fixed pulley mechanism 3 is composed of a plurality of first fixed pulleys. See attached Figure 1 As shown, the first fixed pulleys are arranged at intervals on the upper back and top of the boom 1b, one end of the first cable 4 is wound and fixed on the first hoisting unit 2, and the other end of the first cable 4 extends upward from the first hoisting unit 2 and extends downward after being guided by the first fixed pulley mechanism 3 to be connected with the top end of the locking control mechanism 7. Specifically, a plurality of lifting ears 7b are distributed at intervals on the top surface of the control box body 7a of the locking control mechanism 7, and the lifting end of the first cable 4 is forked into multiple cables and respectively connected with the lifting ears 7b to achieve stable lifting.

[0016] like Figure 1 , 2 As shown in Figures 3 and 4, the second cable mechanism includes a second winch group 5 and a second cable 6. The second winch group 5 is fixedly arranged at the lower end position of the boom 1b and faces the rammer 8. One end of the second cable 6 is wound around the second winch group 5, and the other end of the second cable 6 passes through the locking control mechanism 7 and hoists the rammer 8. Specifically, the second winch group includes a primary winch 5a and a secondary winch 5b. The primary winch 5a and the secondary winch 5b are arranged in sequence at the bottom of the boom 1b. One end of the second cable 6 is wound around the secondary winch 5b, and the other end of the second cable 6 is extended from the secondary winch 5b to the primary winch 5a for further winding, and then extends upward and enters the control box body 7a through the guidance of the second fixed pulley mechanism 9. The second fixed pulley mechanism 9 includes a first fixed pulley 9a arranged at the outer corner position of the control box body 7a and a second fixed pulley 9b arranged in the control box body 7a. The rotating shaft of the first-stage hoist 5a is driven by a slidable motor 5d, the base of which is mounted on the slide rails 5g on both sides, and the slidable motor 5d is driven to slide by the first hydraulic telescopic rod 5c and the second hydraulic telescopic rod 5f disposed on both sides to achieve the clutch between the output shaft end of the slidable motor 5d and the rotating shaft end of the first-stage hoist 5a. It should be noted that the first hydraulic telescopic rod 5c and the second hydraulic telescopic rod 5f achieve stable driving and locking of the slidable motor 5d through coordinated telescopic operation.

[0017] like Figure 1 , 2 As shown in , 3 and 4, the locking control mechanism 7 includes a control box body 7a, a second fixed pulley mechanism, a first hydraulic cylinder 7c and a second hydraulic cylinder 7d. The control box body 7a is hoisted by the first cable 4. The first hydraulic cylinder 7c is arranged below the second fixed pulley 9b inside the control box body 7a and is located on one side. The second hydraulic cylinder 7d is arranged below the first hydraulic cylinder 7c and is located on the other side opposite to the first hydraulic cylinder. The end of the first hydraulic cylinder 7c is fixedly provided with a first clamping roller 7e and cannot rotate. The end of the second hydraulic cylinder 7d is fixedly provided with a second clamping roller 7f and cannot rotate. The surfaces of the first clamping roller 7e and the second clamping roller 7f are provided with a plurality of irregular grooves. The arrangement of the grooves can increase the friction with the second cable 6. It should be noted that when the first hydraulic cylinder 7c and the second hydraulic cylinder 7d push each other, the second cable 6 between the two can be clamped to form a temporary clamping fixation.

[0018] In this embodiment, the first cable 4 and the second cable 6 are both steel cables.

[0019] like Figure 1 , 2As shown in , 3, and 4, the working method of the automatic unhooking tamping machine with adjustable tamping hammer drop distance in this embodiment comprises the following steps: S1: Conduct geological survey on the construction site and draw a soil strength plan of the construction site based on the distribution of the strata at the surveyed construction site.

[0020] S2: Determine the drop distance of each compaction point based on the soil strength plan of the construction site and draw a schematic diagram of the drop distance of the compaction point and the number of compaction times.

[0021] S3: Move the installed tamping machine body 1 to the corresponding tamping point, so that the locking control mechanism 7 clamps and locks the second cable 6 for hoisting the tamping hammer 8, and then control the locking control mechanism 7 and the tamping hammer 8 hoisted by the first cable 4 to a preset drop height through the first winch unit 2.

[0022] S4: Stop the rotation of the first winch unit 2 and lock it, control the locking control mechanism 7 to release the clamping and locking of the second cable 6, and gradually release the second cable 6 through the second winch unit 5 to achieve fine-tuning of the drop distance of the rammer 8; after completing the fine-tuning of the drop distance of the rammer 8, control the first hydraulic cylinder 7c and the second hydraulic cylinder 7d in the locking control mechanism 7 to push toward each other, so that the first clamping roller 7e on the first hydraulic cylinder 7c and the second clamping roller 7f on the second hydraulic cylinder 7d clamp and clamp the second cable 6; then control the first hydraulic telescopic rod 5c and the second hydraulic telescopic rod 5f in the second winch unit 5 to drive the sliding motor 5d to slide on the two side rails 5g, so that the output shaft end of the sliding motor 5d is separated from the rotating shaft end of the first winch 5a in the second winch unit 5.

[0023] S5: Control the locking control mechanism 7 to release the clamping and locking of the second cable 6, and the rammer 8 falls freely to ram the ground. During the free fall of the rammer 8, the second cable 6 rotates freely on the primary winch 5a.

[0024] S6: Control the first hydraulic telescopic rod 5c and the second hydraulic telescopic rod 5f to drive the output shaft end of the sliding motor 5d to engage with the rotating shaft end of the same-level winch 5a, and then lift the rammer 8 to the height of the locking control mechanism 7 through the second winch unit 5 and clamp and lock the second cable 6 through the locking control mechanism 7.

[0025] S7: Repeat steps S3-S6, and repeat this process over and over again.

[0026] The advantages of this embodiment are: (1) The adjustment of the rammer drop distance adopts two sets of cable mechanisms, which can realize a wide range of coarse adjustment and fine adjustment, and realize the free adjustment of the rammer drop distance; (2) by providing a first hydraulic cylinder and a second hydraulic cylinder capable of pressing toward each other in the locking control mechanism, the second cable is temporarily clamped and locked, so as to facilitate the clutch between the output shaft end of the slidable motor and the rotating shaft end of the first winch in the second winch assembly; (3) The combination of the two sets of cable mechanisms and the locking control mechanism can absorb the upward rebound force generated when the locking control mechanism lowers the rammer through the locking control mechanism and the first cable connected to it. At the same time, the second cable connected to the rammer will also absorb the rebound force, thereby reducing the shaking effect on the machine body and the boom.

Claims

1. An automatic uncoupling tamping machine with adjustable tamping hammer drop distance, characterized in that The automatic unhooking tamping machine comprises a machine body, an arm, a first cable mechanism, a second cable mechanism, a locking control mechanism and a tamping hammer; The first cable mechanism comprises a first hoisting unit, a first cable and a first fixed pulley mechanism, wherein the first hoisting unit is fixedly arranged on the rotatable platform of the machine body, and the first fixed pulley mechanism is composed of a plurality of first fixed pulleys and the first fixed pulleys are arranged along the upper part and the top end of the boom; one end of the first cable is wound around the first hoisting unit, and the other end of the first cable is guided by the first fixed pulley mechanism and extends downward to be connected with the top end of the locking control mechanism; The second cable mechanism includes a second hoisting unit and a second cable, wherein the second hoisting unit is fixedly arranged at the lower end of the boom, one end of the second cable is wound around the second hoisting unit, and the other end of the second cable passes through the locking control mechanism and hoists the rammer; The locking control mechanism includes a control box body, a second fixed pulley mechanism, a first hydraulic cylinder and a second hydraulic cylinder. The control box body is suspended by the first cable. The second fixed pulley mechanism includes a plurality of second fixed pulleys and the second fixed pulleys are arranged at the top and inside of the control box body. The first hydraulic cylinder is arranged below the second fixed pulley inside the control box body and is located on one side. The second hydraulic cylinder is arranged below the first hydraulic cylinder and is located on the other side opposite to the first hydraulic cylinder.

2. The automatic uncoupling tamping machine with adjustable tamping hammer drop distance according to claim 1, characterized in that The second winch group includes a primary winch and a secondary winch, and the primary winch and the secondary winch are arranged in sequence at the bottom of the boom, one end of the second cable is wound around the secondary winch, and the other end of the second cable is wound around the secondary winch and extends to the primary winch for winding, and then extends upward and enters the control box body through the guidance of the second fixed pulley mechanism, the rotating shaft of the primary winch is driven by a slidable motor, the base of the slidable motor is mounted on slide rails on both sides, and the slidable motor is driven to slide by a first hydraulic telescopic rod and a second hydraulic telescopic rod respectively arranged on both sides to realize the clutch between the output shaft end of the slidable motor and the rotating shaft end of the primary winch.

3. The automatic uncoupling tamping machine with adjustable tamping hammer drop distance according to claim 2, characterized in that A first pressing roller is disposed at the end of the first hydraulic cylinder, and a second pressing roller is disposed at the end of the second hydraulic cylinder. A plurality of irregular grooves are formed on the surfaces of the first pressing roller and the second pressing roller.

4. The automatic uncoupling tamping machine with adjustable tamping hammer drop distance according to claim 1, characterized in that The top surface of the control box body is provided with a plurality of lifting ears at intervals, and the lower end of the first cable is forked into a plurality of cables and connected to the lifting ears.

5. A working method of the automatic uncoupling tamping machine with adjustable tamping hammer drop distance according to any one of claims 1 to 4, characterized in that The working method comprises the following steps: S1: Conduct geological survey of the construction site and draw a soil strength plan of the construction site based on the distribution of the strata of the surveyed construction site; S2: Determine the drop distance of each compaction point based on the soil strength plane diagram of the construction site and draw a schematic diagram of the drop distance of the compaction point and the number of compaction times; S3: driving the installed compaction machine body to the corresponding compaction point, so that the locking control mechanism clamps and locks the second cable for hoisting the compaction hammer, and then controlling the locking control mechanism and the compaction hammer hoisted by the first cable to a preset drop height through the first winch unit; S4: Stop the rotation of the first hoisting unit and lock it, control the locking control mechanism to release the clamping and locking of the second cable, and gradually release the second cable through the second hoisting unit to achieve fine adjustment of the drop distance of the rammer; after completing the fine adjustment of the drop distance of the rammer, control the first hydraulic cylinder and the second hydraulic cylinder in the locking control mechanism to push toward each other, so that the first clamping roller on the first hydraulic cylinder and the second clamping roller on the second hydraulic cylinder clamp and clamp the second cable; then control the first hydraulic telescopic rod and the second hydraulic telescopic rod in the second hoisting unit to drive the sliding of the slidable motor on the slide rails on both sides, so that the output shaft end of the slidable motor is separated from the rotating shaft end of the first hoist in the second hoisting unit; S5: Control the locking control mechanism to release the clamping and locking of the second cable, and the rammer falls freely to ram the ground. During the free fall of the rammer, the second cable rotates freely on the primary winch; S6: Control the first hydraulic telescopic rod and the second hydraulic telescopic rod to drive the output shaft end of the slidable motor to engage with the rotating shaft end of the primary hoist, then lift the rammer to the height of the locking control mechanism through the second hoisting unit and clamp and lock the second cable through the locking control mechanism; S7: Repeat steps S3-S6, and repeat this process over and over again.

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