CN202744261U - Assembled continuous lifting jack for finishing threaded steel bar upright posts - Google Patents

Abstract

A continuous lifting jack assembled with a fine-rolled threaded steel bar column. The ordinary prestressed tension jack (1) is fixed on the finished rolled threaded steel bar column (2) by a clamping plate (4) at the end of the jack and a jack pressure steel plate (5). The upper and upper tool anchors (8) are fixed on the piston head of the ordinary prestressed tension jack (1) by bolts; the lower tool anchor (9) is located at the lower part of the ordinary prestressed tension jack (1), and passes through the anchor plate snap ring (15) and the lower tool anchor anchor plate snap ring and the lower tool anchor fixed steel plate connection sleeve (16) are fixed on the lower tool anchor fixed steel plate (6), and the threaded sleeve (10) is sleeved outside the finish-rolled threaded steel bar column (2) , and is located between the jack pressure steel plate (5) and the lower tool anchor steel plate (6); the guide safety anchor (7) is located on the upper part of the ordinary prestressed tension jack (1), and the steel plate is fixed by the bolt and the upper guide safety anchor (3) Fixing, the upper guiding safety anchor fixing steel plate (3) is fixed on the fine-rolled threaded steel bar column (2).

Description

Finished threaded steel column assembled continuous lifting jack

technical field

The utility model relates to equipment for performing continuous lifting in civil construction engineering, which belongs to the field of construction machinery equipment in civil construction engineering.

Background technique

The "lifting method" is a construction method in which components or structures are continuously lifted obliquely or vertically to a certain height position by a lifter in the construction of civil engineering construction. What kind of lifting equipment is used is the key to the application of the lifting method. At present, the lifting equipment that is widely used in the construction of the lifting method at home and abroad is a special hydraulic continuous lifting jack developed on the basis of the prestressed steel strand anchor system and hydraulic jack tensioning equipment. The principle is to use the output flow and oil pressure of the hydraulic pump station to drive the jack cylinder to extend and shrink, and to anchor the steel strand alternately through the upper and lower anchorages, so as to drive the steel strand and the lifting object to rise and fall continuously. Because of its simple installation, flexibility and convenient transportation, it has been widely promoted and applied in the overall lifting and hoisting of super large building steel roofs and large bridge construction projects in China. Currently known continuous lifting equipment, except for conventional hoists, electric or manual chain hoists, etc., the recognized lifting equipment with large lifting capacity and safe and reliable lifting equipment is the special continuous lifting hydraulic jack produced by the manufacturer. This set of lifting equipment can only be used for lifting construction. It cannot be commonly used in prestressed steel strand tensioning in prestressed engineering construction, etc. In addition, the purchase of special continuous lifting equipment is expensive and the utilization rate is low, and it cannot be used for multiple purposes. Especially when a multi-point jack cluster is required for overall lifting, the investment cost of the lifting equipment is expensive, which brings great difficulties to the undertaking project.

Contents of the invention

Technical problem: The purpose of this utility model is to provide a kind of hydraulic through-hole jack commonly used in prestressed tensioning equipment and an automatic tool holder for anchoring prestressed steel strands for the lifting mechanical equipment required for continuous lifting construction in civil engineering engineering. Equipment and materials such as sheet anchors and precision-rolled threaded steel bars are assembled into continuous lifting jacks to realize full use of conventional prestressed steel bars and tensioning equipment. When assembled together, they can be used as continuous lifting jacks, and can be used for tensioning in prestressed engineering after disassembly. "One jack with multiple functions" for prestressed tension jacks and reuse of fine-rolled threaded steel bars.

Technical solution: The assembled continuous lifting jack of the finished rolled threaded steel column of the utility model includes a common prestressed tension jack, a finished rolled threaded steel column, an upper guide safety anchor fixed steel plate, a clamping plate at the end of the jack, a pressure bearing steel plate for the jack, and a lower tool Anchor fixed steel plate, guide safety anchor, upper tool anchor, anchor plate snap ring, threaded sleeve, positioning and locking nut, common nut, jack piston, lower tool anchor. The ordinary prestressed tension jack is fixed on the finished threaded steel column through the clamping plate at the end of the jack and the jack pressure steel plate, the upper tool anchor is fixed on the piston head of the ordinary prestressed tension jack through bolts; the lower tool anchor is located in the ordinary The lower part of the prestressed tension jack is fixed on the lower tool anchor steel plate through the anchor plate snap ring and the anchor plate base. The guide safety anchor is located on the upper part of the ordinary prestressed tension jack, and is fixed with the upper guide safety anchor fixing plate by bolts, and the upper guide safety anchor fixing steel plate is fixed on the fine-rolled threaded steel column.

The elasticity coefficient of the steel strand clip top pressure spring of the guide safety anchor is smaller than that of the upper tool anchor and the lower tool anchor steel strand clip top pressure spring, so as to avoid the guide safety anchor first when the piston retracts during the lifting process. Use the lower tool to anchor and anchor, so as to avoid the threaded steel column from becoming a compression rod.

The lower tool anchor is located in the anchor plate snap ring, the lower half of the anchor plate base is located in the hole of the lower tool anchor fixing steel plate, the upper half of the anchor plate base is located in the anchor plate snap ring, and the lower tool anchor is located in the anchor plate On the base, the lower tool anchor can be fixed without using bolts, and it can be rotated in the snap ring to adjust the angle of the anchor hole.

Beneficial effects: the utility model assembles the tension jack, the precision-rolled threaded steel bar and the steel strand automatic tool anchor in the general prestressed engineering construction equipment through the processed multi-piece platform steel plate connectors into a continuous lifting jack that can meet the needs of lifting and installation. It is light in weight, flexible in assembly and disassembly, and low in equipment transformation costs. It uses fine-rolled threaded steel bars as the column support frame, which not only ensures good strength and rigidity after the transformation of the jack, but also can be used as a pre-tensioning jack after disassembly. Stress steel rods are used for prestressing construction; jacks as continuous lifting equipment can still be used for prestressing tensioning construction after disassembly, maximizing the utilization rate of the original equipment for prestressing engineering construction, and achieving the purpose of "one jack with multiple functions". In addition, the utility model adopts a threaded sleeve reinforcement method for the fine-rolled threaded steel column between the pressure-bearing steel plate at the bottom of the jack and the lower tool anchor steel plate that bears a large pressure, which greatly improves the pressure bearing of the lower column support frame. capacity and stability of the column. The elastic coefficient of the top pressure spring of the guide safety anchor steel strand clip is smaller than that of the upper and lower tool anchors, which avoids the anchorage of the guide safety anchor before the lower tool anchor when the jack piston retracts during the lifting process, thereby avoiding the precision The rolled threaded steel column becomes the compression bar.

Description of drawings

Fig. 1 is a three-dimensional axonometric view of a continuous lifting jack assembled with a column of fine-rolled threaded steel bars.

Fig. 2 is the front elevation view of the assembled continuous lifting jack of the finishing rolled threaded steel bar column.

Figure 3 is an assembly diagram of the tool anchor under the continuous lifting jack.

Fig. 4 is a diagram of the various components of the tool anchor under the continuous lifting jack.

Fig. 5 is a three-dimensional axonometric view of the positioning and locking nut and the threaded sleeve parts.

Fig. 6 is a structural diagram of the guide safety anchor fixing the steel plate.

Fig. 7 is a structural diagram of the clamping plate at the end of the jack cylinder.

Fig. 8 is a structural diagram of the pressure steel plate at the bottom of the jack.

Fig. 9 is a structural diagram of the lower tool anchor fixing steel plate.

In the figure there are: ordinary prestressed tension hydraulic jack 1, the fine-rolled threaded steel column of the column support frame 2, the guide safety anchor fixed steel plate 3, the clamping plate at the end of the jack cylinder 4, the pressure steel plate at the bottom of the jack 5, the lower Tool anchor fixed steel plate 6, guide safety anchor 7, upper tool anchor 8, lower tool anchor 9, threaded sleeve 10, positioning and locking nut 11, common nut 12, jack piston 13, lower tool anchor plate 14, lower tool anchor Anchor plate snap ring 15, lower tool anchor plate snap ring and lower tool anchor fixed steel plate connecting sleeve 16.

Detailed ways

The fine-rolled threaded steel column assembled continuous lifting jack includes a hydraulic through-hole jack, a column support frame, an upper tool anchor, a lower tool anchor and a guide safety anchor. The hydraulic jack adopts ordinary prestressed tension jack; the column support frame is composed of fine-rolled threaded steel bars, platform steel plates, and threaded sleeves and nuts matched with the finished-rolled threaded steel bars. The platform steel plates are divided into lower tool anchor steel plates, The pressure-bearing steel plate at the bottom of the jack, the clamping plate at the end of the cylinder body of the jack, and the guide safety anchor fix the steel plate; the anchors for the upper tool anchor, the lower tool anchor and the guide safety anchor for anchoring the hoisting steel strand use a strip steel hinge clip top pressure spring The automatic tool anchor, and the elastic coefficient of the pressure spring of the steel strand clip of the guide safety anchor is smaller than that of the upper and lower tool anchors. The upper tool anchor is fixed on the head of the jack piston through bolts; the lower tool anchor is fixed on the lower tool anchor fixing steel plate through the anchor plate snap ring and the anchor plate base; the guide safety anchor is fixed on the guide safety anchor fixing steel plate through bolts.

The utility model changes the traditional integrated design of the special-purpose lifting jack and the special mode of equipment, and instead adopts the mode of assembly and detachment, and fully turns over and utilizes the equipment. After processing the various parts that make up the continuous lifting jack, they are assembled step by step in the order from bottom to top. The anchor plate snap ring at the lower tool anchor is fixed to the lower tool anchor fixed steel plate through the lower tool anchor fixed steel plate connecting sleeve, so that the lower tool anchor can be fixed without using bolts, and the anchor plate of the automatic tool anchor can be rotated, adjusted and lifted in the snap ring The slight torsion of the steel strand during the process increases the reliable anchorage of the clips for lifting the steel strand; using the difference in the outer diameter of the upper and lower parts of the cylinder of the jack, the clamping plate at the end of the cylinder of the jack is processed, and the jack rests on the concave hole of the load-bearing steel plate at the bottom. In the groove, the jack is clamped by the clamping plate at the end of the jack cylinder to prevent the jack from floating up when the piston is retracted during the lifting process. In order to prevent the gap between the column and the steel plate hole from being too large, resulting in poor equipment integrity, a stepped positioning and locking nut is provided so that one end can be inserted into the gap between the column and the steel plate, the position of the steel plate and the column is fixed, and the positioning and locking nut Located on the upper part of each plate; one end of the threaded sleeve is designed to be threaded and screwed into the lower tool anchor retaining plate to secure.

The specific installation sequence is: first install the lower tool anchor fixing steel plate 6 through 4 or more than 4 fine-rolled threaded steel bar columns 2, and install the lower tool anchor anchor plate snap ring 15 and the lower tool anchor anchor plate in the components of the lower tool anchor 9 The snap ring and the lower tool anchor fixed steel plate connecting sleeve 16 are fixed on the lower tool anchor fixed steel plate 6; four threaded sleeves 10 are installed in sequence and tightened; the jack pressure steel plate 5 is installed, and the positioning and locking nut 11 is tightened; Insert the prestressed tension jack 1 with the upper tool anchor 8 into the jack pressure steel plate 5 and then install the jack tail clip 4, tighten the positioning and locking nut 11 on the upper part of the steel plate and the common nut 12 on the lower part of the steel plate; then install the guide The safety anchor fixes the steel plate 3 and tightens the bolts, and finally the guide safety anchor 7 is fixed on the guide safety anchor fixing steel plate 3, and the installation is completed.

The removal sequence is the reverse of the installation sequence.

Claims (3)

1. A continuous lifting jack assembled with a fine-rolled threaded steel column, characterized in that the continuous lifting jack includes an ordinary prestressed tension jack (1), a fine-rolled threaded steel column (2), an upper guide safety anchor fixed steel plate (3 ), jack tail clamping plate (4), jack pressure steel plate (5), lower tool anchor fixing plate (6), guide safety anchor (7), upper tool anchor (8), lower tool anchor (9), thread sleeve barrel (10), positioning and locking nut (11), ordinary nut (12), jack piston (13), lower tool anchor plate (14); ordinary prestressed tension jack (1) through jack tail clamping plate (4 ) and the jack pressure steel plate (5) are fixed on the finish-rolled threaded steel column (2), the upper tool anchor (8) is fixed on the piston head of the ordinary prestressed tension jack (1) by bolts; the lower tool anchor (9 ) is located at the lower part of the ordinary prestressed tension jack (1), and is fixed on the lower tool anchor plate (6) through the lower tool anchor plate (14), the lower tool anchor plate snap ring and the lower tool anchor plate connecting sleeve (16) On the top, the threaded sleeve (10) is sleeved outside the finish-rolled threaded steel column (2), and is located between the jack pressure steel plate (5) and the lower tool anchor steel plate (6); the guide safety anchor (7) is located The upper part of the stress tension jack (1) is fixed with the upper guiding safety anchor fixing steel plate (3) by bolts, and the upper guiding safety anchor fixing steel plate (3) is fixed on the finish-rolled threaded steel bar column (2). 2. The assembled continuous lifting jack with fine-rolled threaded steel bar column according to claim 1, characterized in that the elastic coefficient of the steel hinge clip pressing spring of the guide safety anchor (7) is higher than that of the upper tool anchor (8) , The lower tool anchor (9) has a small elastic coefficient of the top pressure spring of the steel hinge clip, which prevents the guide safety anchor (7) from being anchored before the lower tool anchor (9) when the piston retracts during the lifting process, thereby avoiding the threaded steel column become a compression rod. 3. The assembled continuous lifting jack with fine-rolled threaded steel bars according to claim 1, characterized in that the lower tool anchor plate (14) is located in the lower tool anchor plate snap ring (15), and the lower tool anchor is fixed The lower part of the steel plate connection sleeve (16) is located in the hole of the lower tool anchor plate (6), and the lower tool anchor plate snap ring and the upper part of the lower tool anchor plate connection sleeve (16) are located in the anchor plate snap ring In (15), the lower tool anchor plate (14) is located between the lower tool anchor plate snap ring and the lower tool anchor fixing steel plate connection sleeve (16), so that the lower tool anchor plate (14) can be fixed without using bolts, and it can Rotate in the anchor plate snap ring (15) to adjust the angle of the anchor hole. the

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