Automatic tube drawing bench for diaphragm wall construction

Abstract

The utility model discloses an automatic tube drawing bench for diaphragm wall construction. A tube drawing device comprises a hydraulic temporary shelving base, a jacking system and a wedge-shaped clamping system. During use, a hydraulic system of the wedge-shaped clamping system is used for tightly holding a joint pipe, a hydraulic jack of the jacking system is used for providing upward jacking force, a wedge-shaped block is used for converting the jacking force into clamping force to ensure that the joint pipe does not slip off in the jacking process, and after a single stroke is completed, a placing rod is inserted into a joint box by adopting a hydraulic temporary placing base; and the four hydraulic jacks are put down, full-automatic pulling of the joint pipe is achieved in sequence, the device is driven by hydraulic pressure, and manual operation is not needed. The problems that in the prior art, during diaphragm wall construction, a tube drawing bench is tedious in operation, repeated manual operation is needed for accurately clamping the connector tube, time and labor are wasted, and efficiency is low are solved, and the full-automatic pulling device has the advantages that full-automatic pulling of the ultra-deep diaphragm wall connector tube can be achieved, and the efficiency of tube drawing operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-seepage wall construction, in particular to an automatic pipe pulling machine used for anti-seepage wall construction. Background Art

[0002] With the development of water conservancy and hydropower industry, the development of water conservancy and hydropower projects has gradually expanded to the western plateau and canyon basins, and the conditions for dam construction have become increasingly complex. The construction terrain of most newly developed projects is characterized by high mountains and deep valleys, thick covering layers and complex geological conditions. In the construction of such terrains, anti-seepage walls are generally used as the vertical anti-seepage system of the dam. The anti-seepage wall is an underground continuous wall constructed by using mud to protect the wall into a groove, and then pouring concrete under the mud or backfilling other anti-seepage materials to construct it. Its function is to achieve an anti-seepage effect.

[0003] Usually, the anti-seepage wall needs to be divided into a plurality of different unit slots and unit wall sections, and each unit wall section is connected to form an integral anti-seepage wall through joints or joints. At the joints, the pipe pulling method is often used for operation, that is, before pouring concrete in the first-phase slot section, joint pipes are placed on both sides of the slot section. After the concrete is initially set, the joint pipes are pulled out by a pipe pulling machine or a crane, thereby forming smooth semi-cylindrical surfaces on both sides of the first-phase slot section, which is convenient for the construction of the second-phase slot section and forms a joint surface here. A pipe pulling machine is required for pipe pulling operations; the commonly used pipe pulling machine is a key-type pipe pulling machine, which includes a base, a lifting cylinder at four vertices, and two symmetrically distributed keys connected to the lifting cylinder.

[0004] There are multiple pairs of symmetrically distributed slots on the outer wall of the joint pipe, and the end of the key is arc-shaped. During operation, place the base of the pipe pulling machine on the horizontal ground where the slot hole is slotted, align the key with the slot position, and then rotate the key manually to put it into the slot, and then lift the joint pipe by the jacking cylinder. The pulling distance is determined by the stroke of the jacking cylinder; when the next jacking is required, remove the key from the slot, lower the jacking cylinder, and align the key with the next slot position, repeat the above steps to achieve the continuous pulling process of the joint pipe. This process requires high precision and requires manual operation, which is extremely inefficient. Since the joint pipe is cast synchronously with the casting process, when the joint pipe is pulled out and it takes too much time, it affects the casting quality of the slot section. Therefore, it is necessary to design an automatic pipe pulling machine for anti-seepage wall construction to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an automatic pipe pulling machine for anti-seepage wall construction, which solves the problem that the pipe pulling machine in the prior art is cumbersome to operate during anti-seepage wall construction, requires repeated manual operation to accurately clamp the joint pipe, is time-consuming and labor-intensive, and has low efficiency. The utility model has the characteristics of being able to realize fully automatic pulling out of the joint pipe of an ultra-deep anti-seepage wall, thereby improving the efficiency of the pipe pulling operation.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic pipe pulling machine for anti-seepage wall construction, including a hydraulic temporary shelving base, the hydraulic temporary shelving base includes a base steel bracket, the upper surface of the base steel bracket is connected to a jacking system, the jacking system includes multiple hydraulic jacks connected to the upper surface of the base steel bracket, the top of the hydraulic jack is connected to a jacking upper frame with a rectangular ring structure, and the lower surface of the jacking upper frame is connected to a wedge clamping system.

[0007] Furthermore, the hydraulic jacks are arranged in 4 groups, and the 4 groups are arranged at the four corners of the base steel support respectively.

[0008] Preferably, the base steel bracket is a rectangular ring structure, a rectangular groove is opened on the side surface of the base steel bracket, a hydraulic device is connected in the rectangular groove, and a pin plate is connected to the telescopic end of the hydraulic device.

[0009] Preferably, the pin plate slides along the rectangular groove, and a pin is connected to a surface of the pin plate on one side facing the inside of the base steel bracket, and the pin is plug-fitted with a placement hole on the outer surface of the joint pipe.

[0010] Furthermore, a plurality of pairs of resting holes are arranged on the outer surface of the joint pipe from top to bottom, and the resting holes are symmetrically arranged along the axis and distributed at equal intervals in the axial direction.

[0011] Preferably, the wedge-shaped clamping system comprises a wedge-shaped anti-falling block, which comprises a bottom ring of an annular structure, the upper surface of which is connected to a funnel-shaped annular shell, and the inner wall of the annular shell is inclined downward into a funnel shape.

[0012] Furthermore, the inclination of the inner wall of the annular shell is set to 70 degrees to 85 degrees.

[0013] Preferably, the bottom ring of the wedge-shaped anti-falling block is connected to the support ring on the lower surface of the upper lifting frame through bolts, and the support ring is connected to the lower surface of the upper lifting frame through a connecting rod.

[0014] Preferably, multiple groups of clamping devices are connected to the upper surface of the support ring, and the clamping mechanism includes a parallel guide plate connected to the upper surface of the support ring. A clamping hydraulic cylinder is provided on the inner wall of the guide plate. The bottom end of the clamping hydraulic cylinder is hinged to the inner wall of the guide plate, and the top end is hinged to one end of the transmission device.

[0015] Furthermore, 8 groups of clamping devices are provided and are distributed at equal intervals in the circumferential direction.

[0016] Preferably, the middle part of the transmission device is hinged to the inner wall of the guide plate through a rotating shaft, and the other end of the transmission device is hinged to the sliding mechanism of the clamping plate.

[0017] Preferably, the sliding mechanism comprises a sliding groove opened at the top of the clamping piece, the inner wall of the sliding groove is slidably connected with a sliding block, and the top of the sliding block is hinged to the other end of the transmission device through a rotating shaft.

[0018] Furthermore, the structure of the slide groove and the slider can make the hinge point between the transmission device and the clamping plate movable, realizing variable articulation, so that the hinge point together with the clamping plate can slide up and down along the inclined direction parallel to the inner wall of the annular shell, avoiding the problem that the hinge point can only move in a circular motion, thereby causing the clamping plate to be unable to always cling to the inner wall of the annular shell when moving up and down.

[0019] Preferably, one side surface of the clamping piece is an inclined arc surface structure that slidably matches with the inner wall of the annular shell.

[0020] Furthermore, the other side surface of the clamping plate is a rubber surface with a concave arc structure, and a texture structure is provided on the surface of the rubber surface to increase the friction force of holding the pipe, and the concave structure is adapted to the outer surface of the joint pipe to hold the pipe.

[0021] The utility model has the following technical effects:

[0022] Compared with the prior art, this device automatically holds the pipe by setting a clamping device, and can realize automatic pipe pulling in conjunction with the jacking system. After one stroke of pipe pulling, the pulled-up joint pipe can be automatically temporarily fixed and shelved by a hydraulic temporary shelving base arranged at the bottom to prevent it from falling, thereby providing an operating gap for the resetting of the clamping device; repeated operations can realize fully automatic pipe pulling operations. Compared with the prior art which requires repeated manual operations to fix the lifted pipe fittings, this method can realize fully automatic operation, greatly improve the efficiency of pipe pulling, save labor costs, and improve the safety of operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a side cross-sectional schematic diagram of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the clamping device in the utility model;

[0027] Explanation of the numbers in the figure: hydraulic temporary shelving base 1, pin plate 111, hydraulic device 112, pin 113, base steel support 12, jacking system 2, hydraulic jack 21, jacking upper frame 22, support ring 221, wedge clamping system 3, clamping device 31, clamping hydraulic cylinder 311, transmission device 312, clamping plate 313, slide groove 314, slider 315, wedge anti-falling block 32, bottom ring 321, annular shell 322, bolt 33, guide plate 34. DETAILED DESCRIPTION

[0028] like Figure 1~Figure 3 As shown, the automatic pipe pulling machine for anti-seepage wall construction includes a hydraulic temporary shelving base 1, the hydraulic temporary shelving base 1 includes a base steel support 12, the upper surface of the base steel support 12 is connected to a jacking system 2, the jacking system 2 includes a plurality of hydraulic jacks 21 connected to the upper surface of the base steel support 12, the top of the hydraulic jack 21 is connected to a jacking upper frame 22 of a rectangular ring structure, and the lower surface of the jacking upper frame 22 is connected to a wedge clamping system 3.

[0029] Furthermore, the hydraulic jacks 21 are arranged in four groups, and the four groups are arranged at four corners of the base steel support 12 respectively.

[0030] Preferably, the base steel bracket 12 is a rectangular ring structure, and a rectangular groove is opened on the side surface of the base steel bracket 12. A hydraulic device 112 is connected in the rectangular groove, and a pin shaft 113 and a plate 111 are connected to the telescopic end of the hydraulic device 112.

[0031] Preferably, the pin shaft 113 plate 111 slides along the rectangular groove, and the pin shaft 113 is connected to the surface of the pin shaft plate facing the inside of the base steel bracket 12, and the pin shaft 113 is plugged into the placement hole on the outer surface of the joint pipe.

[0032] Furthermore, a plurality of pairs of resting holes are arranged on the outer surface of the joint pipe from top to bottom, and the resting holes are symmetrically arranged along the axis and distributed at equal intervals in the axial direction.

[0033] Preferably, the wedge-shaped clamping system 3 includes a wedge-shaped anti-falling block 32, which includes a bottom ring 321 of an annular structure, and a funnel-shaped annular outer shell 322 is connected to the upper surface of the bottom ring 321, and the inner wall of the annular outer shell 322 is inclined downward to form a funnel shape.

[0034] Furthermore, the inclination of the inner wall of the annular housing 322 is set to 70 degrees to 85 degrees.

[0035] Preferably, the bottom ring 321 of the wedge-shaped anti-falling block 32 is connected to the support ring 221 on the lower surface of the lifting upper frame 22 through bolts 33, and the support ring 221 is connected to the lower surface of the lifting upper frame 22 through a connecting rod.

[0036] Preferably, multiple groups of clamping devices 31 are connected to the upper surface of the support ring 221, and the clamping mechanism includes a parallel guide plate 34 connected to the upper surface of the support ring 221. The inner wall of the guide plate 34 is provided with a clamping hydraulic cylinder 311. The bottom end of the clamping hydraulic cylinder 311 is hinged to the inner wall of the guide plate 34, and the top end is hinged to one end of the transmission device 312.

[0037] Furthermore, eight groups of clamping devices 31 are provided, which are evenly spaced in the circumferential direction.

[0038] Preferably, the middle portion of the transmission device 312 is hinged to the inner wall of the guide plate 34 via a rotating shaft, and the other end of the transmission device 312 is hinged to the sliding mechanism of the clamping plate 313 .

[0039] Preferably, the sliding mechanism includes a slide groove 314 opened at the top of the clamping piece 313, and a slider 315 is slidably connected to the inner wall of the slide groove 314. The top of the slider 315 is hinged to the other end of the transmission device 312 through a rotating shaft.

[0040] Furthermore, the structure of the slide groove 314 and the slider 315 can make the hinge point of the transmission device 312 and the clamping plate 313 movable, realizing variable hinge, so that the hinge point together with the clamping plate 313 can slide up and down along the inclined direction parallel to the inner wall of the annular shell 322, avoiding the hinge point can only make circular motion, thereby causing the problem that the clamping plate 313 cannot always be close to the inner wall of the annular shell 322 when moving up and down.

[0041] Furthermore, the transmission device 312 is a lever, which rotates along the hinge point at the center with the inner wall of the guide plate 34, so that the force of the clamping hydraulic cylinder 311 at one end is transmitted to the clamping plate 313 at the other end through the lever structure to achieve descent or ascent.

[0042] Preferably, one side surface of the clamping piece 313 is an inclined arc surface structure that slidably cooperates with the inner wall of the annular shell 322 .

[0043] Furthermore, the other side surface of the clamping piece 313 is a rubber surface with a concave arc structure, and a texture structure is provided on the surface of the rubber surface to increase the friction force of holding the pipe, and the concave structure is adapted to the outer surface of the joint pipe to hold the pipe.

[0044] Furthermore, the lifting stroke of the jacking system 2 is the distance between the upper and lower adjacent resting holes on the outer surface of the joint pipe.

[0045] The working principle of the utility model is as follows:

[0046] First, the device is sleeved on the outside of the joint pipe so that the multiple groups of rest holes on the outer surface of the joint pipe face the pin 113 of the pin 113 plate 111; then the clamping hydraulic cylinder 311 is started, and the clamping piece 313 is driven to slide downward along the funnel-shaped inner wall of the wedge-shaped anti-falling block 32 through the transmission device, and the clamping pieces 313 of the multiple groups of clamping devices 31 clamp the joint pipe; after the joint pipe is clamped, the upper frame 22 is lifted by multiple jacks. The upper frame is connected to the entire wedge-shaped clamping system 3 by bolts 33, so the wedge-shaped clamping system 3 also rises accordingly, lifting the clamped joint pipe upward; when the lifting system 2 lifts the device After a certain stroke, the hydraulic device 112 of the hydraulic temporary shelving base 1 is started to push out the latch plate, so that the pin shaft 113 is inserted into the shelving holes on both sides of the outer surface of the joint pipe, and the joint pipe is temporarily fixed and shelved; then, multiple clamping cylinders are started to retract, and the clamping pieces 313 are driven by the transmission device to slide upward along the funnel-shaped inner wall of the wedge-shaped anti-falling block 32, and the gap between the clamping pieces 313 becomes larger, and the clamping of the joint pipe is released; finally, multiple jacks are lowered to the bottom, and the operations of steps S2 to S5 are repeated to continue to pull the joint pipe up by one stroke, and the above operations are repeated until all the joint pipes are pulled out.

[0047] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. Automatic pipe pulling machine for anti-seepage wall construction, characterized by: The hydraulic temporary shelving base (1) comprises a base steel support (12), the upper surface of the base steel support (12) is connected to a jacking system (2), the jacking system (2) comprises a plurality of hydraulic jacks (21) connected to the upper surface of the base steel support (12), the top of the hydraulic jacks (21) is connected to a jacking upper frame (22) of a rectangular ring structure, and the lower surface of the jacking upper frame (22) is connected to a wedge-shaped clamping system (3); the base steel support (12) is a rectangular ring structure, a rectangular groove is provided on the side surface of the base steel support (12), a hydraulic device (112) is connected in the rectangular groove, a pin plate (111) is connected to the telescopic end of the hydraulic device (112), the pin plate (111) slides along the rectangular groove, a pin (113) is connected to a side surface of the pin plate (111) facing the inside of the base steel support (12), and the pin (113) is plug-fitted with a shelving hole on the outer surface of a joint pipe (0).

2. The automatic pipe pulling machine for anti-seepage wall construction according to claim 1, characterized in that: The wedge-shaped clamping system (3) comprises a wedge-shaped anti-falling block (32), the wedge-shaped anti-falling block (32) comprising a bottom ring (321) of an annular structure, the upper surface of the bottom ring (321) being connected to a funnel-shaped annular outer shell (322), the inner wall of the annular outer shell (322) being inclined downwardly into a funnel shape.

3. The automatic pipe pulling machine for anti-seepage wall construction according to claim 2, characterized in that: The bottom ring (321) of the wedge-shaped anti-falling block (32) is connected to the support ring (221) on the lower surface of the lifting upper frame (22) via bolts (33), and the support ring (221) is connected to the lower surface of the lifting upper frame (22) via a connecting rod.

4. The automatic pipe pulling machine for anti-seepage wall construction according to claim 3 is characterized in that: The upper surface of the support ring (221) is connected to a plurality of clamping devices (31), the clamping mechanism comprising a guide plate (34) connected to the upper surface of the support ring (221) and arranged in parallel, the inner wall of the guide plate (34) being provided with a clamping hydraulic cylinder (311), the bottom end of the clamping hydraulic cylinder (311) being hinged to the inner wall of the guide plate (34), and the top end being hinged to one end of the transmission device (312).

5. The automatic pipe pulling machine for anti-seepage wall construction according to claim 4, characterized in that: The middle portion of the transmission device (312) is hinged to the inner wall of the guide plate (34) via a rotating shaft, and the other end of the transmission device (312) is hinged to the sliding mechanism of the clamping plate (313).

6. The automatic pipe pulling machine for anti-seepage wall construction according to claim 5, characterized in that: The sliding mechanism comprises a slide groove (314) provided at the top of the clamping piece (313); the inner wall of the slide groove (314) is slidably connected with a slider (315); the top of the slider (315) is hingedly connected to the other end of the transmission device (312) via a rotating shaft; and the surface of one side of the clamping piece (313) is an inclined arc surface structure that slidably cooperates with the inner wall of the annular shell (322).

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