CN214561853U

CN214561853U - Prestressed sleeper stretching machine

Info

Publication number: CN214561853U
Application number: CN202023205920.7U
Authority: CN
Inventors: 张�杰; 张铁男; 廉栋; 王春峰; 付冰杰; 薛长军; 张永; 徐明远; 赵岩; 徐海峰
Original assignee: Shandong High Speed Transportation Equipment Co ltd
Current assignee: Shandong High Speed Transportation Equipment Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-11-02
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a prestressing force sleeper puts a machine, it is including spaning the frame on the sleeper conveying chain, be connected with the workstation that goes up and down by the drive of lifting power unit in the frame, be connected with the location platform that slides around by the drive of location power unit on the workstation, be connected with on the location platform by putting a motor drive pivoted put a spool, the front end elastic connection of putting a spool have can with the sleeper nut complex on the sleeper mould put a sleeve, put a telescopic rear portion sliding connection on putting a spool, the front end of putting a spool is equipped with can stretch into put a sleeve and can prevent to put a sleeve and deviate from putting an anti-disengaging ring platform of axle, the rear portion of putting a spool is equipped with spacing boss, it is equipped with between telescopic rear end face and the spacing boss to put a spring. The utility model discloses can be fast and accurate realize putting of prestressing force sleeper and open work, have simple structure, put the advantage of opening efficient and guaranteeing product quality.

Description

Prestressed sleeper stretching machine

Technical Field

The utility model relates to a prestressing force sleeper puts a machine.

Background

At present, concrete sleepers produced at home and abroad are prefabricated prestressed sleepers, a plurality of layers and a plurality of columns (mostly even columns) are generally arranged in the production of the prestressed sleepers, the prestressed sleepers are shown in the attached drawings, a plurality of reinforcing steel bars arranged in rows and columns are arranged in the prefabricated concrete, and after the prestressed sleepers are prefabricated and formed, the prestressed sleepers are finally formed into finished products through tensioning, tension releasing processes, end reinforcing steel bar cutting, demoulding and curing processes.

In the tension releasing process, the prior art is mostly realized by using related equipment of the original prestressed track slab, and because the mould of the prestressed track slab is different from the mould of the prestressed sleeper used in reality, the problem of mismatching of various structures exists when the prestressed track slab is used by using the equipment. The existing urgent need is to design a prestressed sleeper mould that accords with the field use and carries out the machine of putting and stretching of putting.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to above-mentioned defect, a prestressing force sleeper that can be suitable for current prestressing force sleeper mould is put and is opened the use is put and is opened machine is provided, it is put and is opened efficient and can improve the production quality of sleeper.

In order to solve the technical problem, the provided prestressed sleeper tensioning machine comprises a machine frame which spans on a sleeper conveying chain, and is characterized in that: the automatic sleeper mould opening device is characterized in that a workbench driven to lift by a lifting power mechanism is connected onto the rack, a positioning table driven by a positioning power mechanism to slide back and forth is connected onto the workbench, an opening shaft driven to rotate by an opening motor is connected onto the positioning table, and an opening sleeve matched with a sleeper nut on a sleeper mould is elastically connected to the front end of the opening shaft.

The rear part of the tension releasing sleeve is connected to the tension releasing shaft in a sliding mode, the front end of the tension releasing shaft is provided with an anti-loosening ring platform which can stretch into the tension releasing sleeve and can prevent the tension releasing sleeve from being separated from the tension releasing shaft, the rear part of the tension releasing shaft is provided with a limiting boss, and a tension releasing spring is arranged between the rear end face of the tension releasing sleeve and the limiting boss.

The front end of the expansion sleeve is provided with a plurality of protrusions which can extend into the sleeper nut.

The lifting servo motor is connected to the rack, a lifting lead screw driven by the power of the lifting servo motor is mounted on the rack, and a screw connected to the lifting lead screw in a threaded manner is connected to the working table.

The positioning power mechanism comprises a forward-pushing oil cylinder connected to the workbench, and a piston rod of the forward-pushing oil cylinder is connected to the positioning platform.

The machine frame is connected with a compression rod driven to lift by a compression power oil cylinder, and the lower end of the compression rod is connected with a compression anti-skid block capable of being pressed on a sleeper die frame.

After adopting above-mentioned structure, the frame sets up on the sleeper conveying chain, when the sleeper mould of prefabricating the sleeper moves this position, lifting power unit drive workstation goes up and down, slide around the drive of location power unit locating platform, make put the cooperation of opening sleeve and the sleeper nut on the sleeper mould of opening a axle front end, open a motor is put in the start-up, because above-mentioned elastic connection, can guarantee to put above-mentioned and open sleeve and sleeper nut complex fastness, then put and open work again, after putting and opening, above-mentioned each moving part return. The anti-skidding piece that compresses tightly in above-mentioned structure can fully compress tightly the sleeper mould to guarantee to put a effect, further improve product quality.

In summary, compared with the prior art, the scheme has the following advantages: the utility model discloses can be fast and accurate realize putting of prestressing force sleeper and open work, have simple structure, put the advantage of opening efficient and guaranteeing product quality.

Drawings

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic structural view taken along line B-B in FIG. 2;

FIG. 4 is a schematic structural view taken along line A-A in FIG. 2;

FIG. 5 is a schematic structural view of a tie mold;

fig. 6 is a schematic top view of fig. 5.

Detailed Description

As shown in fig. 5 and 6, the existing sleeper mold includes a mold box 100 having a mold cavity, two ends of the mold box are provided with a steel bar installation seat 101, a straight bar of the steel bar installation seat passes through an end wall of the mold box 100 and extends out of the mold box, an end portion of the straight bar is provided with a tensioning end seat, the straight bar is provided with a threaded section, a sleeper nut 102 located outside the mold box is screwed on the straight bar, the sleeper nut is of a circular nut structure, and the circular nut is provided with a plurality of grooves in a surrounding manner and screwed with the sleeper nut, the sleeper nut abuts against the end wall, the extension length of the straight bar can be adjusted, and therefore, tensioning and releasing work of the prestressed sleeper can be realized, and a releasing tool of the prestressed track plate in the prior art is not suitable for the sleeper mold.

As shown in fig. 1 to 4, the present invention provides an embodiment of a prestressed sleeper tensioning device, which for convenience of description, the left and right directions in fig. 1 are the longitudinal direction of the tensioning device, and the direction perpendicular to the paper surface is the transverse direction of the tensioning device, and includes a frame 1 spanning over a sleeper conveying chain 20, the sleeper conveying chain includes a frame body and a roller connected to the frame body, the detailed structure of which is not described, the sleeper conveying chain is used for conveying sleeper molds, a working table 2 driven to lift by a lifting power mechanism is connected to the frame 1, in this embodiment, at least two guide pillars 9 vertically arranged are installed on the frame 1, the working table 2 is slidably connected to the guide pillars through sliding sleeves sliding on the guide pillars by sliding sleeves, the lifting power mechanism includes a lifting servo motor 10 connected to the frame, a lifting lead screw 11 driven by the lifting servo motor is installed on the frame, the elevating screw 11 is vertically arranged, a nut screwed on the elevating screw is connected to the workbench, when the elevating servo motor 10 acts, the elevating screw 11 rotates, the nut drives the workbench to slide up and down, namely, the elevating of the workbench is realized, and the workbench is positioned at one end part (the front or the rear) of the sleeper mold. The positioning table 2 is connected with a positioning table 3 which is driven by a positioning power mechanism to slide back and forth, the positioning power mechanism comprises a forward-push oil cylinder 12 connected to the working table, and a piston rod of the forward-push oil cylinder is connected to the positioning table 3. The positioning table 3 is connected with a tension releasing shaft 5 driven by a tension releasing motor 4 to rotate, and the front end of the tension releasing shaft 5 is elastically connected with a tension releasing sleeve 7 capable of being matched with a sleeper nut on a sleeper mold. When the workbench is lowered to a proper position, the positioning table 3 slides under the driving of the forward pushing oil cylinder, so that the straight rod of the sleeper mold extends into the tension releasing sleeve, the tension releasing sleeve is combined with the sleeper nut, the tension releasing motor 4 is started due to the elastic connection mode, the tension releasing shaft 5 rotates, the tension releasing shaft rotates under the driving of the tension releasing nut, the tension releasing sleeve 7 is driven to rotate, and the tension releasing work is realized.

Referring to fig. 2 to 4, the rear portion of the tension releasing sleeve 7 is slidably connected to the tension releasing shaft 5, the front end of the tension releasing shaft 5 is provided with an anti-release ring platform 51 which can extend into the tension releasing sleeve and can prevent the tension releasing sleeve from being released from the tension releasing shaft, the rear portion of the tension releasing shaft 5 is provided with a limiting boss 52, a tension releasing spring 8 is arranged between the rear end face of the tension releasing sleeve and the limiting boss, specifically, the rear portion of the tension releasing sleeve 7 is connected to the tension releasing shaft 5 through a key, so that the tension releasing sleeve and the tension releasing shaft can rotate together, and the tension releasing sleeve and the tension releasing shaft can slide mutually. The front end of the expansion sleeve 7 is provided with a plurality of protrusions which can extend into the sleeper nut. The number and the position distribution relation of the protrusions are matched with those of the grooves of the circular nut, and under the action of the tension releasing spring, when the tension releasing motor is started, the initial state rotates slowly, so that the protrusions are completely inserted into the grooves, and then the tension releasing shaft is accelerated, and therefore tension releasing work is achieved.

Referring to fig. 1 and 2, a pressing rod 13 driven by a pressing power cylinder to lift is connected to the frame, a pressing anti-skid block 14 capable of pressing against a frame of a sleeper mold is connected to the lower end of the pressing rod 13, and the pressing anti-skid block 14 is made of wear-resistant hard rubber and can press against the sleeper mold to ensure a tension effect.

The utility model discloses the concrete structural style of several kinds of embodiments, the utility model discloses do not receive the restriction of above-mentioned embodiment, in this technical field personnel, based on the utility model discloses the equivalence change and the part replacement of going up concrete structure are all in the utility model discloses a protection scope.

Claims

1. A prestressed sleeper tensioning machine comprises a machine frame (1) spanned on a sleeper conveying chain, and is characterized in that: be connected with workstation (2) that drive goes up and down by lifting power mechanism on frame (1), be connected with location platform (3) that slide around by the drive of location power mechanism on workstation (2), be connected with on location platform (3) and open axle (5) by putting a motor (4) drive pivoted, the front end elastic connection of putting an axle (5) can with sleeper nut complex on the sleeper mould put a sleeve (7).

2. The prestressed sleeper tensioning machine as set forth in claim 1, wherein: the rear portion sliding connection of putting a sleeve (7) is on putting a axle (5), the front end of putting a axle (5) is equipped with can stretch into put a sleeve and can prevent to put a sleeve and deviate from putting an anti-separating ring platform (51) of axle, the rear portion of putting a axle (5) is equipped with spacing boss (52), put to be equipped with between telescopic rear end face and the spacing boss and put a spring (8).

3. The prestressed sleeper tensioning machine as set forth in claim 1, wherein: the front end of the expansion sleeve (7) is provided with a plurality of protrusions which can extend into the sleeper nut.

4. The prestressed sleeper tensioning machine as set forth in any one of claims 1 to 3, wherein: the lifting mechanism is characterized in that at least two guide columns (9) which are vertically arranged are arranged on the rack (1), the workbench (2) is connected to the guide columns in a sliding mode through sliding sleeves which are sleeved on the guide columns in a sliding mode, the lifting power mechanism comprises a lifting servo motor (10) connected to the rack, a lifting lead screw (11) driven by the power of the lifting servo motor is arranged on the rack, and a screw nut which is screwed on the lifting lead screw is connected to the workbench.

5. The prestressed sleeper tensioning machine as set forth in any one of claims 1 to 3, wherein: the positioning power mechanism comprises a forward-push oil cylinder (12) connected to the workbench, and a piston rod of the forward-push oil cylinder is connected to the positioning table (3).

6. The prestressed sleeper tensioning machine as set forth in any one of claims 1 to 3, wherein: the machine frame is connected with a pressing rod (13) driven by a pressing power oil cylinder to lift, and the lower end of the pressing rod (13) is connected with a pressing anti-skid block (14) capable of being pressed on a sleeper die frame.