CN210658053U

CN210658053U - Hydraulic pushing device

Info

Publication number: CN210658053U
Application number: CN201921561068.1U
Authority: CN
Inventors: 史瑞; 苏凯; 秦伟豪; 王晖; 徐威涛; 王兆喆; 张亚朋; 苏坤鹏; 李晓博
Original assignee: Henan Province First Construction Work Group Xingyang Prefabricated Building Co ltd
Current assignee: Henan first Construction Group Construction Technology Co.,Ltd.
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-02
Anticipated expiration: 2029-09-19

Abstract

The utility model relates to a hydraulic pushing device, which effectively solves the problems that the prior pushing device needs a long hole which is arranged on a track in advance, the cost is high, the manufacturing difficulty is large, and the stroke can not be adjusted steplessly; the technical scheme for solving the problem is that the trolley comprises a trolley and is characterized in that one side of the trolley is rotatably connected with a pushing oil cylinder, and the other side of the pushing oil cylinder is rotatably connected to a pushing support; the pushing support comprises two clamping plates and a rotating shaft, and one end of the rotating shaft penetrates through the two clamping plates and is in threaded engagement with a nut; the utility model discloses avoided the lossy design that additionally punches on the track, greatly reduced construction cost, the practicality is strong.

Description

Hydraulic pushing device

Technical Field

The utility model relates to a bridge construction machinery technical field specifically is hydraulic pressure thrustor.

Background

With the gradual development and the gradual maturity of the bridge-crossing technology, more and more bridges are erected by adopting a method of prefabricating section beams, box beams are prefabricated in a factory in advance, are transported to a construction site in sections, and are hoisted, positioned and assembled on the site during construction. Wherein, the segment box girder is assembled and erected by adopting a falsework. The falsework main beam is mainly of a two-span simply supported beam structure, and the longitudinal main beam adopts a plurality of layers of six-four military beams. 4 spiral supports are symmetrically arranged at the bottom of each section of box girder in a balanced manner and are supported on top beams of the top layer of the vertical and horizontal distribution girders of the falsework.

And when the beam is moved, a gantry hoisting scheme is adopted, and the segmental box beam is hoisted by penetrating the suspender into the reserved hole at the end part of the box beam. And after the strength of the box girder segment reaches the specified strength, the box girder segment is lifted by the gantry and is transported to a girder storage area. Before the beam sections are erected, the beam bodies are hoisted to a beam transporting flat car from a beam storage area, and are hoisted to the falsework from the beam transporting flat car.

When the segment box girder is erected to the end sections, the supports before erection need to be installed, and preparation is made for girder erection. The top surface elevations of the pier and the pad stone are carefully checked before the support is installed. After the support is adjusted in place according to the designed elevation, grouting treatment is carried out by adopting cement paste, no gap is left between the top and bottom surfaces and the concrete surfaces of the beam and the pad stone after the support is installed, and the support is ensured to be horizontal.

And then, accurately positioning the section beam, wherein the accurate positioning refers to adjusting the beam section to the position required by the design in the transverse direction, the longitudinal direction and the vertical direction. The vertical, horizontal and vertical are adjusted by using a double-coordinate jack, and the center line of the line is used as a reference, namely: the central line of the line is superposed with the central line of the beam body, and the other beam sections are controlled and adjusted according to the relative distance of the beam ends; and setting and gradually adjusting the height direction according to the preset camber of construction. Specifically, each beam section is placed on four screw supports or jacks, and each support point has three degrees of freedom which are restricted with each other, and adjusting one of the three degrees of freedom necessarily affects the other two. Therefore, the accurate positioning of the beam section is a process of repeated adjustment and gradual approach. The process of adjustment is repeatedly and circularly carried out according to the sequence of longitudinal adjustment → transverse adjustment → vertical adjustment in the construction process until the design requirement is met.

The four spiral supports or jacks can not move simultaneously, the stroke is short, the efficiency is low, four jacks are needed under each beam, the cost is high, the most important is that the moving speed is too slow, and the glue smeared on the end face is initially solidified before moving in place.

The applicant discloses a three-dimensional assembling trolley in patent documents with application dates of 2018, 9 and 30, publication authorization dates of 2019, 5 and 10 and publication number of CN208844439U, so that the trolley can drive a prefabricated section beam to move.

Therefore, the utility model provides a hydraulic pressure thrustor solves this problem.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a hydraulic pressure thrustor, the effectual current thrustor of having solved needs the slot hole of seting up on the track in advance, and the expense is high, and the preparation degree of difficulty is big, the problem of stroke infinitely variable control.

The utility model comprises a trolley, which is characterized in that one side of the trolley is rotationally connected with a pushing oil cylinder, and the other side of the pushing oil cylinder is rotationally connected with a pushing support;

the pushing support comprises two clamping plates and a rotating shaft, and one end of the rotating shaft penetrates through the two clamping plates and is in threaded engagement with a nut.

Preferably, the two clamping plates are provided with arc-shaped grooves.

The utility model discloses to the slot hole that current thrustor need set up on the track in advance, the expense is high, and the preparation degree of difficulty is big, and the improvement can not be made to the problem of infinitely variable control of stroke, will fix the base on the track through seting up the slot hole and change into through two cardboards and pivot with the base clamp tight on the track to realize the fixed of base, the utility model discloses avoided additionally having punched the loss design on the track, greatly reduced construction cost, the practicality is strong.

Drawings

Fig. 1 shows a base fixed by punching in the prior art.

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a right-side view of the base of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The first embodiment of the utility model provides a hydraulic pushing device, including dolly 1, its characterized in that, 1 one side of dolly rotate and be connected with the top push hydro-cylinder 2, 2 opposite sides of top push hydro-cylinder rotate and be connected with top push support 3, top push support 3 on still fixedly connected with hydraulic tank and hydraulic oil pump, hydraulic oil pump and external power supply link to each other, constructor can control the flexible of top push hydro-cylinder 2 through the state control hydraulic oil pump;

the pushing support 3 comprises two clamping plates 4 and a rotating shaft 5, one end of the rotating shaft 5 penetrates through the two clamping plates 4 and is in threaded engagement with a nut 7, the two clamping plates 4 are respectively arranged on two sides of the track, one end of the rotating shaft 5 penetrates through the two clamping plates 4 and is provided with a thread, and the nut 7 is screwed to enable the nut 7 to clamp the two clamping plates 4, so that the pushing support 3 is fixed on the track.

In the second embodiment, on the basis of the first embodiment, two the cardboard 4 on all seted up the arc wall 6, the 6 middle part high both ends of arc wall low to specific position is adjusted to pivot 5, and because of the leg thickness value difference of its upper and lower position of the track of different models, pivot 5 can slide in the arc wall 6, thereby makes this device can adapt to the track of different models, thereby can guarantee that cardboard 4 can have partly under the leg that is in track upper portion all the time when pressing from both sides tightly at the track both sides, thereby has guaranteed that this device can press from both sides tightly all the time on the track of different models.

When the utility model is used specifically, a constructor can firstly place two clamping plates 4 of the pushing support 3 on two sides of a track respectively, then manually screw the nut 7 until the pushing support can not be screwed in, and further fasten the pushing support by a wrench, and then can control the pushing oil cylinder 2 to stretch and retract by controlling the hydraulic oil pump, so as to control the trolley 1 to advance and retreat;

constructor can slide the rotating shaft 5 in the arc-shaped groove 6, adjust to the appropriate position and then screw the nut 7, thereby enabling the device to be firmly clamped on the rails of various types.

Claims

1. The hydraulic pushing device comprises a trolley (1) and is characterized in that one side of the trolley (1) is rotatably connected with a pushing oil cylinder (2), and the other side of the pushing oil cylinder (2) is rotatably connected to a pushing support (3);

the pushing support (3) comprises two clamping plates (4) and a rotating shaft (5), and one end of the rotating shaft (5) penetrates through the two clamping plates (4) and is in threaded engagement with a nut (7).

2. A hydraulic thrustor according to claim 1, wherein the two clamping plates (4) are provided with an arc-shaped slot (6).