SU1402651A1 - Hydraulic clamp for securing piling and the like on vibration device - Google Patents

Abstract

The invention relates to the field of construction, namely to hydraulic clamps for fastening tongues, piles and other similar elements on a vibrating device. Purpose izob

Description

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reteni - increased reliability. The hydraulic clamp comprises a housing 1 with guides on the upper end, a hydraulic cylinder 7 with a base 8. and an additional 10 pistons. When this rod 9 and 11 of the pistons 8 and 10 are directed in opposite directions. On the rod 11 of the additional piston 10 is installed a centralizer 13. On the rod 9 main1

The invention relates to construction, in particular to devices used in the diving and extraction of dowels, piles and other similar elements.

The purpose of the invention is to increase the reliability of work.

; Figure 1 shows the hydraulic clamp, a longitudinal section; figure 2 - section aa in figure 1.

The hydraulic clamp consists of sorpus 1, in which longitudinal 2 and transverse 3 horizontal 1st grooves are made. At the upper end of the housing, guides 4 are made in the form of a well-notch groove in contact with the guides of the vibrating device 5. To fix the hydraulic clamp from transverse movement relative to the vibrating device 5, the strips 6 are seen / fixed. In the longitudinal tsazu 2 of the housing 1 hydro - 4 7 with the main piston 8 and i TOKOM 9 and an additional piston 10 do rod 11. At the same time, the rods 9 and 11 are directed in opposite directions and the rod end of the hydraulic cylinder 7 Communicated to each other through t | deck 12, Additional 11 on the rod 11 A hydraulic piston 10 of a hydraulic cylinder is fitted with a centralizer 13, for example, a nut with a tapered groove, which, in its extreme upward position, enters the conical recess 14 of the vibrating device 5. A slide 16 is fixed to the stem 9 of the base H (1st piston 8 of the hydraulic cylinder 15) in the transverse horizontal of Pisa 3 building 1. The slider 16 is made U-shaped, to the inner sides

The piston 8 is mounted with a U-shaped slider 16 with clamping pins 17 fixed by means of levers 18. When the hydraulic cylinder 7 is activated, simultaneously with the clamping of the pile, the hydraulic clamp is centered and securely fixed on the vibrating device. 2 Il.

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To us, the vertical elements of which, by means of the levers 17, hinge the clamping cheeks 18 with the formation of two hinged parallelograms. Friction plates 19 are rigidly fastened on the clamping cheeks 18. On the housing 1 there are mounted strips 20, which are the upper horizontal guides of the slide 16 and restricting the movement of the clamping cheeks 18 in the transverse horizontal groove 3 of the housing 1.

Hydraulic clamp works as follows.

The hydraulic cylinder rods 7 are inserted. The centralizer 13 is not in contact with the conical recess 14 of the lower part of the vibrating device 5. In a position suspended from the lifting mechanism between the hydraulic clamping body 1 and the vibrating device, a gap is formed, due to which it is possible to deflect the clamp manually to one side or the other, thereby facilitating mounting the clamp on the end of the submersible element 21 (tongue or pile). When the extreme position of the piston 8 and the rod 9 of the slider 16 is also in the upper position. Since the upward movement of the clamping jaws 18 is limited by the strips 20, the levers 17, when the slider is moved upward, part the clamping jaws apart from the longitudinal axis of the clamp. The latter is ready for installation on a sheet pile or pile. The hydraulic actuator of the hydraulic cylinder 7 is turned on, which consists of a pump, a spool, an oil tank, a safety adjustable valve and a controlled check valve: on the pressure line of the liquid supply 3140265

In the piston chamber of the hydraulic cylinder, the safety valve is regulated to the maximum required system pressure. The spool is turned on for supplying oil to the piston cavity of the hydraulic cylinder, while connecting the rod of the hydraulic cylinder through the spool to the drain. Rods 9 and 11 begin to move. The rod 11 with the centralizer fixed at its end 13 abuts the conical recess 14 of the lower part of the vibration device 5 and under the action of the force developed by the hydraulic cylinder 7 centers IF in this conical recess and firmly presses the hydraulic clamp to the vibration device, eliminate all gaps. Simultaneously, the piston 8 with the rod 9, 20 moving down vertically moves along the guides of the groove 3 of the body 1 U-shaped slide 16, which, through the levers 17 on the clamping cheeks 18, causes them to move -25 s to the longitudinal axis of the clamped element, clamping last (sheet pile or pile). In this case, the hydraulic drive continues to work, creating pressure in the piston cavity of the hydraulic cylinder equal to that to which the safety valve is set. The controlled check valve is closed and prevents the flow of fluid from the piston cavity of the cylinder. The lifting mechanism 5, the vibration device together with the clamp and the tongue is transferred to the work site, the vibrator is turned on, and the tongue or pile is immersed in the ground. In the event of a weakening of the tongue or pile clamp, the amplitude of vibration increases, since the weight of the tongue or pile ceases to participate in the vibration, the shock of the vibration device also increases. The body of the vibrating device, when moving down through the centralizer 13, the rod 11, the piston 10 and the fluid in the piston cavity, moves the piston 8 with the rod gg 9 down. An installed closed closed check valve prevents the oil from exiting the piston cavity. The rod 9 and the slider 16 fixed on it through the levers 17 move the gigantic clamping cheeks 18, which clamp the pile 19 with the plates 19. Since the reverse movement of the clamping cheeks and the raising of the slide with the rod is impossible1

Because of the significant increase in the force of the slider 16 transmitted to the cheeks in the lower position of the slider, then: when the vibrator moves upward, the piston 8 remains in place. The body of the vibration device ceases to act on the centralizer 13, the pressure in the piston cavity drops. The fluid from the hydraulic system instantly enters the piston cavity of the hydraulic cylinder and presses the centralizer 13 to the body of the vibrating device 5, restoring the original position

After the tongue or pile is immersed, the non-return valve opens, allowing the flow of fluid out of the piston cavity of the hydraulic cylinder. The pump is turned on for reverse, clamping cheeks 18 retract to different directions. freeing the clamped tongue, the centralizer 13 emerges from the conical recess 14, allowing the hydraulic clamp to move relative to the vibration device, after which the clamp is removed from the tongue. Using a hydraulic clamp allows the tongue or pile to be clamped securely. Due to the articulated parallelogram system, the force of clamping the pile increases to quite significant values. Installing a hydraulic cylinder with two piston groups allows simultaneously fixing the pile to securely fix the clamp body relative to the vibrating device, and in its initial position allows the clamp to move relative to the vibrating device, which makes it easier to install the clamp on the sheet pile or pile. Due to the installation in the hydraulic system on the piston cavity line of a controlled check valve, it is possible to preload the tongue or pile during operation of the vibrating device, which improves performance and increases productivity. Since the impact force (disturbing force) of the vibration device and the clamping force of the tongue are in direct relation, the force of the pile clamping can be adjusted by the impact force of the vibration device, while the pressure of the fluid in the piston cavity up to a controlled non-return valve developed by the Pump. This allows the use of a less powerful hydraulic drive and automatic 5-. (37 "d. 2

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Claims (1)

Claim A hydraulic clamp for attaching the tongue, piles and other similar elements to a vibrating device, comprising a housing with guides on the upper end in contact with the guides of the vibrating device, a hydraulic cylinder, a pressure and drain line, and movable clamping jaws interacting with a slider fixed to the hydraulic cylinder rod, Due to the fact that, in order to ensure reliable operation, it is equipped with an additional rod directed to the onion device and equipped with a centralizer interacting with it, moreover, rod cavities idrotsilindra communicated with each other. t l and h - the aim is to increase the hydraulic cylinder with a piston from the side —Ί IIS . FIG. 2