Hydraulic impact hammer drill rod lifting mechanism

Abstract

The utility model discloses a hydraulic impact hammer drill rod lifting mechanism, and belongs to the technical field of dredging engineering construction. A hydraulic impact hammer drill rod lifting mechanism comprises a hammer body, a hydraulic pushing mechanism arranged in the hammer body and a drill rod arranged at the output end of the hydraulic pushing mechanism. The hydraulic impact hammer drill rod lifting mechanism further comprises a guide rail assembly arranged on the hammer body in a sliding mode and a lifting mechanism arranged at the bottom of the hammer body and used for pulling the drill rod out of rock. According to the utility model, when the drill rod needs to be pulled out of the rock, the hydraulic cylinder drives the hydraulic telescopic rod to drive the lifting stop block to move, and the lifting stop block drives the fixed stop block on the hammer body to move, so that the hammer body is driven to move along the guide rail, and the purpose of pulling the drill rod out of the rock is achieved; the problem that a motor is adopted to drive a steel wire rope to pull out the drill rod from the rock traditionally is solved, the working intensity is reduced, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of dredging engineering construction, in particular to a hydraulic impact hammer drill rod lifting mechanism. Background Art

[0002] Hydraulic hammers can be used to break rocks for channel dredging or seabed trench construction. When the drill rod of the hydraulic hammer has penetrated into the rock to a predetermined depth, the drill rod needs to be pulled out of the rock for subsequent construction, so that the hydraulic hammer can be moved to the next construction location to continue the operation.

[0003] The operation diagram of hydraulic impact hammer is as follows Figure 7 As shown in the figure, reference numeral 1 is a hammer body, reference numeral 2 is a guide rail, reference numerals 3 and 6 are extraction piles, reference numeral 4 is a drill rod, and reference numeral 5 is a rock. When the hydraulic impact hammer is in operation, the drill rod 4 is vertically downward, and it forms a whole with the hammer body 1 of the hydraulic impact hammer. The hydraulic mechanism in the hammer body generates power to make the hammer body and the drill rod move downward along a fixed guide rail 2 at the same time, so as to achieve the purpose of breaking the rock 5. After the rock breaking is completed at one position, in order to move the hydraulic impact hammer to the next position to continue the construction, the drill rod 2 needs to be pulled out of the rock 5. The traditional method is to tie a steel cable to the extraction pile on the hammer body, and then pull the steel cable upward through the corresponding lifting mechanism to achieve the purpose of extraction.

[0004] Since the hydraulic impact hammer is constructed in seawater for a long time, the seawater will cause great corrosion to the steel cable. This requires the operator to strengthen the inspection of the steel cable during use and replace the unsuitable steel cable from time to time. This brings certain difficulties to the subsequent maintenance, increases the labor intensity of the staff, and wastes manpower. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art such as maintenance, labor intensity and manpower waste caused by the long-term construction of the hydraulic impact hammer in seawater, which results in serious corrosion of the steel cable by the seawater, and proposes a hydraulic impact hammer drill rod lifting mechanism.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A hydraulic impact hammer drill rod lifting mechanism comprises a hammer body, a hydraulic pushing mechanism arranged inside the hammer body and a drill rod arranged at the output end of the hydraulic pushing mechanism. The hydraulic impact hammer drill rod lifting mechanism also comprises a guide rail assembly slidably arranged with the hammer body and a lifting mechanism arranged at the bottom of the hammer body for extracting the drill rod from the rock.

[0008] As a preferred technical solution of the present application, the lifting mechanism includes a fixed frame, a fixed seat fixed on the fixed frame, a hydraulic cylinder fixedly connected to the side wall of the fixed seat by bolts, a hydraulic telescopic rod arranged at the output end of the hydraulic cylinder and distributed through the fixed seat, and a lifting block fixedly connected to the end of the hydraulic telescopic rod.

[0009] As a preferred technical solution of the present application, a plurality of fixed stops are fixedly connected to the outer wall of the hammer body, and the fixed stops include a fixed portion fixedly connected to the hammer body and a sliding portion fixedly arranged on the side wall of the fixed portion.

[0010] As a preferred technical solution of the present application, the guide rail assembly includes guide rails distributed along the length direction of the hammer body, and the sliding part is provided with a groove body that slides with the guide rails.

[0011] As a preferred technical solution of the present application, the guide rails are two symmetrically arranged along the axial direction of the hammer body.

[0012] As a preferred technical solution of the present application, the fixing seat is in a U-shaped structure, and the fixing seat is arranged between the two guide rails.

[0013] As a preferred technical solution of the present application, the lifting block includes a fixing portion fixed to the end of the hydraulic telescopic rod and an arc portion integrally formed with the fixing portion, and the arc portion is provided with a groove adapted to the outer wall of the hammer body.

[0014] Compared with the prior art, the utility model provides a hydraulic impact hammer drill rod lifting mechanism, which has the following beneficial effects:

[0015] 1. In the utility model, through the setting of the lifting mechanism, when the drill rod on the hammer body is inserted into the rock through the hydraulic pushing mechanism, under the action of the hydraulic cylinder, the hydraulic telescopic rod drives the lifting block to move forward, and the lifting block drives the fixed block on the hammer body to move forward, thereby driving the hammer body to move upward along the guide rail, so as to achieve the purpose of pulling the drill rod out of the rock, avoiding a series of steps for the staff to pull the drill rod out of the rock, reducing the work intensity and saving manpower.

[0016] 2. In the present invention, the hydraulic cylinder used has a position feedback signal, through which the distance between the lifting block and the fixed block can be determined. When the hydraulic impact hammer is working, in order to prevent the hydraulic impact pressure from damaging the lifting mechanism, the lifting block should be completely separated from the fixed block, and the telescopic rod of the hydraulic cylinder is completely retracted into the hydraulic cylinder, so that a preset safety distance is left between the lifting block and the fixed block; if the telescopic rod of the hydraulic cylinder is not completely retracted, the corresponding construction control system will automatically prohibit the start of the hydraulic impact hammer for construction work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure from an upward perspective;

[0020] Figure 4 for Figure 1 Bottom view of

[0021] Figure 5 It is a schematic diagram of the structure of the connection between the guide rail assembly and the fixed stopper;

[0022] Figure 6 It is a structural diagram of the lifting mechanism;

[0023] Figure 7 It is a schematic diagram of the operation of an existing hydraulic impact hammer;

[0024] In the figure:

[0025] 100, hammer body; 101, fixed stopper; 102, guide rail; 200, drill rod; 300, lifting mechanism; 301, fixed seat; 302, hydraulic cylinder; 303, hydraulic telescopic rod; 304, lifting stopper. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] Reference Figure 1 , Figure 2 A hydraulic impact hammer drill rod lifting mechanism includes a hammer body 100, a hydraulic pushing mechanism arranged inside the hammer body 100, and a drill rod 200 arranged at the output end of the hydraulic pushing mechanism. In addition, the hydraulic impact hammer drill rod lifting mechanism also includes a guide rail assembly slidably arranged with the hammer body and a lifting mechanism 300 arranged at the bottom of the hammer body 100 for pulling the drill rod 200 out of the rock. When in use, the hydraulic pushing mechanism inside the hammer body 100 is used as a power to push the drill rod 200 to move to crush the rock. After the rock is crushed, when the drill rod needs to be pulled out of the rock, the lifting mechanism is used to drive the hammer body to move along the guide rail assembly, thereby achieving the purpose of pulling the drill rod out of the rock.

[0029] Reference Figure 3 , Figure 4 , Figure 5 As a preferred technical solution of this embodiment, the lifting mechanism 300 includes a fixed frame, a fixed seat 301, a hydraulic cylinder 302, a hydraulic telescopic rod 303 and a lifting block 304. It should be noted that the fixed frame can be set on an external basic device, the fixed seat 301 is fixed on the fixed frame, and the hydraulic cylinder 302 can be fixedly connected to the side wall of the fixed seat 301 by bolts when in use. The hydraulic telescopic rod 303 is set at the output end of the hydraulic cylinder 302, and the hydraulic telescopic rod 303 runs through the fixed seat 301. The lifting block 304 is fixedly connected to the end of the hydraulic telescopic rod 303. When working, the hydraulic cylinder 302 drives the hydraulic telescopic rod 303 to move, and the hydraulic telescopic rod 303 further drives the lifting block 304 to contact the hammer body 100, thereby driving the hammer body to move along the guide rail assembly through the lifting block 304 to pull the drill rod out of the rock.

[0030] Furthermore, in order to achieve the stability of the driving of the hammer body 100 by the lifting block 304, a plurality of fixed blocks 101 are fixedly connected to the outer wall of the hammer body 100. Furthermore, the fixed block includes a fixed part fixedly connected to the hammer body and a sliding part fixedly arranged on the side wall of the fixed part. The sliding part is slidably connected to the guide rail assembly, thereby realizing the sliding of the hammer body along the guide rail assembly.

[0031] Furthermore, the guide rail assembly includes a guide rail 102 distributed along the length direction of the hammer body 100, and a groove body is provided on the sliding part to slide with the guide rail 102. In this way, the lifting block 304 can move parallel to the guide rail 102 under the drive of the hydraulic telescopic rod 303, and drive the hammer body to move along the guide rail when it contacts the lifting block 304, so as to pull the drill rod out of the rock. It should be noted that the existence of the groove body facilitates improving the stability of the hammer body moving along the guide rail.

[0032] Reference Figure 6 As a preferred technical solution of this embodiment, the guide rails 102 are two symmetrically arranged along the axis of the hammer body 100 , and the fixing seat 301 is specifically in a U-shaped structure, and the fixing seat 301 is arranged between the two guide rails 102 .

[0033] Furthermore, the lifting block 304 includes a fixed portion fixed at the end of the hydraulic telescopic rod and an arc portion integrally formed with the fixed portion, the fixed portion is used to be fixedly connected to the hydraulic telescopic rod, and a groove adapted to the outer wall of the hammer body 100 is opened on the arc portion. The lifting block can be covered on the outer wall of the hammer body through the groove, thereby improving the stability of the lifting block moving along the outer wall of the hammer body.

[0034] When in use, after the drill rod 200 on the hammer body 100 is inserted into the rock through the hydraulic pushing mechanism, under the action of the hydraulic cylinder 302, the hydraulic telescopic rod 303 drives the lifting block 304 to move upward, and the lifting block 304 drives the fixed block 101 on the hammer body 100 to move upward, thereby driving the hammer body 100 to move upward along the guide rail 102, so as to achieve the purpose of pulling the drill rod 200 out of the rock. Since the hydraulic cylinder 302 is fixed to the external support through the fixed seat 301, the relative position of the fixed seat 301 and the guide rail 102 remains unchanged. When it is necessary to lower the device to the rock surface, the hydraulic cylinder 302 stops working, the internal pressure of the hydraulic cylinder 302 decreases, the hydraulic telescopic rod 303 moves downward, the lifting block 304 moves downward at the same time, and the hammer body 100 moves downward under its own gravity to restore the original position.

[0035] It should be noted that the hydraulic cylinder 302 itself is equipped with a position sensing device for detecting the extension length of the hydraulic telescopic rod 303. Due to the working mode of the hydraulic impact hammer, the internal hydraulic impact force is relatively large. When it is working, in order to prevent damage to the lifting mechanism, the lifting block 304 should be completely separated from the fixed block 101. Through the position sensing device carried by the hydraulic cylinder 302, the construction monitoring system controls the hydraulic telescopic rod 303 to be completely retracted into the hydraulic cylinder 303 first, so that a sufficient safety distance is left between the lifting block 304 and the fixed block 101. If the hydraulic telescopic rod 303 cannot be completely retracted into the hydraulic cylinder 302, the construction monitoring system will prohibit the hydraulic impact hammer from working. At this time, the hydraulic impact hammer should be lifted out of the water for inspection, and construction can be carried out after the fault is eliminated.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic impact hammer drill rod lifting mechanism, comprising a hammer body (100), a hydraulic driving mechanism arranged inside the hammer body (100), and a drill rod (200) arranged at an output end of the hydraulic driving mechanism, characterized in that: The hydraulic impact hammer drill rod lifting mechanism also includes a guide rail assembly slidably arranged with the hammer body and a lifting mechanism (300) arranged at the bottom of the hammer body (100) for extracting the drill rod (200) from the rock.

2. A hydraulic impact hammer drill rod lifting mechanism according to claim 1, characterized in that: The lifting mechanism (300) comprises a fixing frame, a fixing seat (301) fixedly mounted on the fixing frame, a hydraulic cylinder (302) fixedly connected to a side wall of the fixing seat (301) by means of bolts, a hydraulic telescopic rod (303) arranged at an output end of the hydraulic cylinder (302) and extending through the fixing seat (301), and a lifting block (304) fixedly connected to an end of the hydraulic telescopic rod (303).

3. A hydraulic impact hammer drill rod lifting mechanism according to claim 2, characterized in that: A plurality of fixed stoppers (101) are fixedly connected to the outer wall of the hammer body (100), and the fixed stoppers include a fixed portion fixedly connected to the hammer body and a sliding portion fixedly arranged on the side wall of the fixed portion.

4. A hydraulic impact hammer drill rod lifting mechanism according to claim 3, characterized in that: The guide rail assembly comprises a guide rail (102) distributed along the length direction of the hammer body (100), and the sliding part is provided with a groove body that is slidably matched with the guide rail (102).

5. A hydraulic impact hammer drill rod lifting mechanism according to claim 4, characterized in that: The guide rails (102) are two axially symmetrically arranged on the hammer body (100).

6. A hydraulic impact hammer drill rod lifting mechanism according to claim 5, characterized in that: The fixing seat (301) is in a U-shaped structure, and the fixing seat (301) is arranged between the two guide rails (102).

7. A hydraulic impact hammer drill rod lifting mechanism according to claim 2, characterized in that: The lifting block (304) comprises a fixing portion fixed to the end of the hydraulic telescopic rod and an arc-shaped portion integrally formed with the fixing portion, wherein the arc-shaped portion is provided with a groove adapted to the outer wall of the hammer body (100).

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