CN214561854U

CN214561854U - Prestressed sleeper tensioning mechanism

Info

Publication number: CN214561854U
Application number: CN202023251226.9U
Authority: CN
Inventors: 廉栋; 张铁男; 王春峰; 张�杰; 徐海峰; 刘鹏; 冯媛媛; 张永; 徐明远; 赵岩; 付冰杰
Original assignee: Shandong High Speed Transportation Equipment Co ltd
Current assignee: Shandong High Speed Transportation Equipment Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-02
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a prestressing force sleeper tensioning mechanism, it is including the pulling support, is equipped with the stretch-draw board that slides from top to bottom by the power cylinder drive on the pulling support, and the lower part of stretch-draw board has the socket groove that can the plug bush just can support the tip loop platform of stretch-draw pole on the stretch-draw pole, pulling support elastic connection has the locking seat, locks to rotate on the seat and is connected with the locking sleeve, locks the seat and locks the sleeve and all is equipped with the passageway that supplies the stretch-draw pole to stretch into, and the telescopic front end of locking has the stretch-draw nut complex locking spanner that can with stretch-draw pole on, the rigid coupling has outer ring gear on the locking sleeve, be equipped with on the pulling support and order about outer ring gear pivoted locking power unit. The utility model discloses the prestressing force stretch-draw of realization reinforcing bar that can be quick accurate has stretch-draw efficient, labor efficiency height and improves product quality's advantage.

Description

Prestressed sleeper tensioning mechanism

Technical Field

The utility model relates to a prestressing force sleeper stretch-draw mechanism.

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, 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 tensioning 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 unmatched structures exists when the prestressed track slab is used by using the equipment. At present, a tensioning mechanism which is used for tensioning a prestressed sleeper mould meeting the field needs to be designed urgently.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to above-mentioned defect, provide a prestressing force sleeper tensioning mechanism that can be suitable for current prestressing force sleeper mould stretch-draw to use, its stretch-draw is efficient and can improve the production quality of sleeper.

In order to solve the technical problem, the provided prestressed sleeper tensioning mechanism comprises a pulling support which can be close to a sleeper mould, and is characterized in that: the tensioning plate who slides from top to bottom by the power cylinder drive is equipped with on the pulling support, is equipped with the passageway that vertical setting and confession stretch-draw pole stretched into on the pulling support, and the lower part of stretch-draw plate has the socket groove that can the plug bush just can support the tip ring platform of stretch-draw pole on the stretch-draw pole, pulling support elastic connection has the locking seat, locks to rotate on the seat and is connected with the locking sleeve, locks the seat and locks the sleeve and all is equipped with the passageway that confession stretch-draw pole stretched into, and the telescopic front end of locking has can with stretch-draw nut complex locking spanner on the stretch-draw pole, the rigid coupling has outer ring gear on the locking sleeve, be equipped with on the pulling support and order about outer ring gear pivoted locking power unit.

The pulling support is provided with a sliding groove, the locking seat is connected in the sliding groove in a sliding mode, a tension spring is installed between the rear end face of the locking seat and a vertical plate of the pulling support, and the tension rod penetrates through the middle of the tension spring.

The locking power mechanism comprises a locking motor connected to the pulling support, and a power output shaft of the locking motor is provided with a locking gear meshed with the outer gear ring.

The pulling support includes the connecting rod that vertically sets up, connects at the front end seat of connecting rod front end and connects the rear end seat at the connecting rod rear portion, locking seat, stretch-draw board all are connected on the front end seat, the end plate of stretch-draw hydro-cylinder is connected on the stretch-draw frame, the piston rod is connected on the rear end seat.

And a pressure ring table is arranged on a piston rod of the tensioning oil cylinder, and a pressure sensor is arranged between the pressure ring table and the rear end seat.

A plurality of pulling brackets which are arranged in parallel are arranged.

After the structure is adopted, when a tensioning process is required, the tensioning rod on the sleeper mould of the prestressed sleeper extends into the channel of the pulling support, the tensioning plate slides downwards to be combined with the tensioning rod through the matching structure of the socket groove and the end annular table, the tensioning oil cylinder is started to perform tensioning, and after the tensioning is finished, the tensioning nut on the tensioning rod is locked by the locking wrench through the power drive of the locking power mechanism, so that the prestress setting of the reinforcing steel bars is realized. The utility model discloses simple structure, the prestressing force stretch-draw of the realization reinforcing bar that can be quick accurate. The specific structure of the elastic connection comprises the tensioning spring and other structures, and the matching of the locking wrench and the tensioning nut can be ensured.

In summary, compared with the prior art, the scheme has the following advantages: the utility model discloses the prestressing force stretch-draw of realization reinforcing bar that can be quick accurate has stretch-draw efficient, labor efficiency height and improves product quality's advantage.

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 view of an embodiment of the present invention connected to a stretching machine;

FIG. 2 is a schematic view of the embodiment of FIG. 1 in a tensioned configuration;

FIG. 3 is a schematic view of the structure rotated 90 degrees along the line B-B in FIG. 2;

FIG. 4 is a schematic structural view of a tie mold;

fig. 5 is a schematic top view of fig. 4.

Detailed Description

As shown in fig. 4 and 5, the existing sleeper mold includes a mold box 100 having a mold cavity, two ends of the mold box are provided with a reinforcement installation seat 101, the reinforcement installation seat is connected with a tension rod 103 penetrating through an end wall of the mold box 100 and extending out of the mold box, an end portion of the tension rod 103 is provided with an end annular platform 104, a diameter of the end annular platform is larger than that of the tension rod, the tension rod is provided with a threaded section, a sleeper nut 102 located outside the mold box is screwed on the tension rod, the sleeper nut is in a hexagon nut structure and is screwed on the sleeper nut, the sleeper nut abuts against the end wall, an extending length of the tension rod can be adjusted, that is, stretching and releasing work of the prestressed sleeper can be realized, and a stretching tool of the prestressed track plate in the prior art is not suitable for the sleeper mold.

As shown in fig. 1 to 3, the present invention provides an embodiment of a prestressed sleeper tensioning mechanism, in which the structure of the present invention connected to a tensioning machine is shown, for convenience of description, the vertical direction in figure 2 is the longitudinal direction of the stretching machine, the left and right direction is the transverse direction of the stretching machine, the prestressed sleeper stretching mechanism comprises a pulling bracket 3 which can be close to one end of a sleeper mould, a stretching plate 4 which is driven by a power cylinder to slide up and down is arranged on the pulling bracket 3, in this embodiment, two opposite slide plates are arranged on the pulling bracket 3, a vertical chute is arranged on the slide plate, the two side walls of the tensioning plate 4 extend into the sliding grooves to realize the sliding installation of the tensioning plate, a channel which is longitudinally arranged and is used for the tensioning rod to extend into is arranged on the pulling support 3, and the lower part of the tensioning plate 4 is provided with a socket groove 41 which can be inserted on the tensioning rod and can abut against the end ring platform of the tensioning rod. In this embodiment, pulling support 3 is including the connecting rod of vertical setting, connect the front end seat at the connecting rod front end and connect the rear end seat at the connecting rod rear portion, locking seat 5, stretch-draw board 4 all are connected on the front end seat, the end plate of stretch-draw hydro-cylinder 12 is connected on stretch-draw frame 2, the piston rod is connected on the rear end seat, because set up many sets of steel bar mount pad and straight-bar on the same sleeper mould, therefore the corresponding pulling support 3 that has set up a plurality of parallel arrangements, each pulling support is respectively by the stretch-draw hydro-cylinder power drive of connection on stretch-draw frame 2, therefore can stretch-draw the multichannel reinforcing bar on the track mould simultaneously, has improved labor efficiency greatly. And a piston rod of the tensioning oil cylinder is provided with a pressure ring table 121, and a pressure sensor 13 is arranged between the pressure ring table 121 and the rear end seat. Through the structure, the tension force can be monitored in real time by using the pressure sensor 13, the tension quality is ensured, and the product quality is further ensured.

Refer to fig. 1 to 3 shown, 3 elastic connection of pulling support has locking seat 5, and it is connected with locking sleeve 6 to rotate on the locking seat 5, and locking seat and locking sleeve all are equipped with the passageway that supplies stretch-draw pole to stretch into, and the front end of locking sleeve 6 has can with stretch-draw nut complex locking spanner 61 on the stretch-draw pole, and above-mentioned locking spanner includes the sleeve body, and the sleeve body is fitted with the cloth and is had the holding piece that corresponds with hexagon nut to can realize cooperation between them, the rigid coupling has outer gear ring 62 on the locking sleeve 6, be equipped with on the pulling support 3 and order about outer gear ring pivoted locking power unit. The locking power mechanism comprises a locking motor 9 connected to the pulling support 3, and a locking gear 10 meshed with the outer gear ring is mounted on a power output shaft of the locking motor. The pulling support 3 is provided with a sliding groove, the locking seat 5 is slidably connected in the sliding groove, a tension spring 8 is arranged between the rear end face of the locking seat and a vertical plate of the pulling support, the tension rod passes through the middle part of the tension spring, under the initial state, a clamping sheet of a possible locking wrench does not correspond to the outer edge of a hexagon nut, through the structure, the locking motor 9 is driven slowly firstly, and after the locking wrench 61 and the tension nut are completely combined, the locking work of power driving is carried out.

Referring to fig. 1 to 3, in this embodiment, the stretching machine has a stretching frame 1, a stretching frame 2 driven by a power mechanism to slide back and forth is connected to the stretching frame 1, the stretching frame 2 is slidably connected to the stretching frame 1 through a matching structure of a sliding block and a guide rail, the power mechanism includes a power cylinder 11 connected to the stretching frame 1, and the stretching frame is in power connection with a piston rod of the power cylinder. The tensioning frame 2 is connected with a pulling support 3 which is driven by a tensioning oil cylinder to slide back and forth, and the tensioning frame 2 is connected with a positioning support plate 7 which can be propped against the frame of the sleeper mold. When the tensioning device is used, the tensioning machine 2 is enabled to reach a proper position through the power oil cylinder 11, namely, the straight rod on the sleeper die extends into the channel, the socket groove on the tensioning plate forks the end annular table of the tensioning rod, the end part of the positioning support plate 7 is abutted against the sleeper die, and the tensioning oil cylinder drives the pulling support to perform tensioning work.

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. The utility model provides a prestressing force sleeper tensioning mechanism, is including pulling support (3) that can be close to the sleeper mould, characterized by: pulling support (3) are last to be equipped with by tensioning plate (4) that the power cylinder drive slided from top to bottom, are equipped with on pulling support (3) vertically to set up and supply the passageway that the tensioning rod stretched into, and the lower part of tensioning plate (4) has can the plug bush on the tensioning rod and can support socket groove (41) of the tip ring platform of tensioning rod, pulling support (3) elastic connection has locking seat (5), rotates on locking seat (5) and is connected with locking sleeve (6), and locking seat and locking sleeve all are equipped with the passageway that the supply tensioning rod stretched into, and the front end of locking sleeve (6) has ability and tensioning nut complex locking spanner (61) on the tensioning rod, the rigid coupling has outer ring gear (62) on locking sleeve (6), be equipped with on pulling support (3) and order about outer pivoted locking power unit.

2. The prestressed tie tensioning mechanism of claim 1, wherein: the pulling support is characterized in that a sliding groove is formed in the pulling support (3), the locking seat (5) is connected in the sliding groove in a sliding mode, a tension spring (8) is installed between the rear end face of the locking seat and a vertical plate of the pulling support, and the tension rod penetrates through the middle of the tension spring.

3. The prestressed tie tensioning mechanism of claim 1, wherein: the locking power mechanism comprises a locking motor (9) connected to the pulling support (3), and a power output shaft of the locking motor is provided with a locking gear (10) meshed with the outer gear ring.

4. A prestressed tie tensioning mechanism as claimed in any one of claims 1 to 3 wherein: pulling support (3) including the connecting rod of vertical setting, connect at the front end seat of connecting rod front end and connect the rear end seat at the connecting rod rear portion, locking seat (5), stretch-draw board (4) all are connected on the front end seat, the end plate of stretch-draw hydro-cylinder (12) is connected on stretch-draw frame (2), the piston rod is connected on the rear end seat.

5. A prestressed tie tensioning mechanism as claimed in any one of claims 1 to 3 wherein: and a piston rod of the tensioning oil cylinder is provided with a pressure ring table (121), and a pressure sensor (13) is arranged between the pressure ring table (121) and the rear end seat.

6. A prestressed tie tensioning mechanism as claimed in any one of claims 1 to 3 wherein: a plurality of pulling brackets (3) which are arranged in parallel are arranged.