CN113524433A

CN113524433A - Sleeper tensioning equipment

Info

Publication number: CN113524433A
Application number: CN202110893390.XA
Authority: CN
Inventors: 王朝林; 张正宁; 毕胜; 隋斌; 王梦; 尤瑞林
Original assignee: SHANXI GAOHANG HYDRAULIC Inc; Railway Engineering Research Institute of CARS
Current assignee: SHANXI GAOHANG HYDRAULIC Inc; Railway Engineering Research Institute of CARS
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-10-22

Abstract

The invention relates to sleeper tensioning equipment. The invention comprises a mould, a tension rod, two tensioning mechanisms and four tensioning mechanisms, wherein a plurality of forming containing cavities are arranged in the mould, six prestressed steel bars are arranged in the forming containing cavities and connected with the tension rod, two tension rods and four tension rods are respectively arranged on the outer side of the mould in a single containing cavity, the left end of the mould is provided with the two tensioning mechanisms, the right end of the mould is provided with the four tensioning mechanisms, and the two tensioning mechanisms comprise: push away jar one, support body one, walking beam one, two tensioning equipment, set up a plurality of two tensioning equipment on the walking beam one, every two tensioning equipment set up with the stretch-draw locking pore of two adjacent stretch-draw pole adaptation butt joints, a walking beam slides and sets up in support body one, support body one sets up and pushes away jar one drive walking beam one and slides and dock the stretch-draw pole, four stretch-draw mechanism structure component are the same with two stretch-draw mechanisms, include: a second frame body, a second moving beam, a second pushing cylinder and four tensioning devices, and a lifting cylinder is arranged at the bottom of the die.

Description

Sleeper tensioning equipment

Technical Field

The invention belongs to the technical field of sleeper production, and particularly relates to sleeper tensioning equipment.

Background

The railway modernization develops, the sleeper is gradually replaced by the concrete prefabricated sleeper, along with the construction of a railway system, the sleeper usage is huge, the sleeper is used as a bearing component of a railway vehicle, the production prefabrication needs to be provided with built-in prestressed tendons, at present, professional equipment for producing the concrete sleeper in China is few, a small-sized tensioning machine is generally adopted for independent connection and independent tensioning, the efficiency is low, the quality is poor, the compatibility of different sleeper specifications is poor, the tensioning precision cannot be guaranteed, the synchronism is poor, the automation degree is low, the equipment and the production process are poor, and the sleeper does not have large-scale streamlined operation conditions.

Disclosure of Invention

The invention discloses sleeper tensioning equipment for solving the problems of intelligent, automatic, integrated and large-scale production of sleepers.

The invention adopts the following technical scheme:

sleeper stretch-draw equipment, which comprises a mold, stretch-draw pole, straining device, the mould outside sets up the stretch-draw pole, it is provided with straining device to correspond mould outside stretch-draw pole, tensioning device includes two stretch-draw mechanism, four stretch-draw mechanism, it holds the chamber to set up a plurality of shaping that are used for pouring the sleeper in the mould, every shaping holds the intracavity and sets up six prestressing steel bars and is connected with the stretch-draw pole, the mould left side stretch-draw end that singly holds the chamber is two adjacent stretch-draw poles, the stretch-draw pole that the end is close to each other for four is held to the mould right side stretch-draw of same singly holding chamber, the mould left end sets up two stretch-draw mechanism, the mould right-hand member sets up four stretch-draw mechanism, two stretch-draw mechanism includes: push away jar one, support body one, walking beam one, two tensioning equipment, walking beam distributes on the walking beam one and sets up a plurality of two tensioning equipment, every two tensioning equipment be provided with the stretch-draw locking pore of two adjacent stretch-draw pole adaptation butt joints, walking beam one slides and sets up in support body one, support body one sets up and pushes away jar one drive walking beam one and slide and dock the stretch-draw pole, four stretch-draw mechanisms include: the second frame body is provided with a second pushing cylinder driving the second moving beam to slide and butt against the tensioning rod.

The chain plates are arranged between every two adjacent tensioning devices, connecting holes are formed in two ends of each chain plate, a first movable beam and a second movable beam are respectively and fixedly provided with a lower pressing plate, the lower pressing plate is adaptive to the upper pressing plate, the two tensioning devices and the four tensioning devices are respectively provided with a fixing rod hole and penetrate through fixing rods, rod heads of the fixing rods are exposed, the lower pressing plates and the upper pressing plates are used for pressing and fixing the fixing rods, the connecting holes of the chain plates are adaptive to the rod heads of the fixing rods, the chain plates are arranged between the two adjacent tensioning devices to restrict the distance between the two adjacent tensioning devices, and the chain plates are arranged between the four adjacent tensioning devices to restrict the distance between the four adjacent tensioning devices.

Two tensioning equipment include: the rear plate is connected with the front plate through the connecting plate, the front plate is provided with two adjacent connecting spanner sleeves, the connecting spanner sleeves are used for leading in the tension rod to realize the screwing of a nut, the connecting spanner sleeves are provided with external teeth, the front plate is also provided with a gear box and two motors, the two motors are respectively driven by the gear box to be meshed with the external teeth of the two connecting spanner sleeves to enable the two connecting spanner sleeves to rotate, two rectangular cavities are arranged between the rear plate and the front plate, the two cavities are respectively provided with a link joint, the link joint is provided with an inner hole abutting against the end of the tension rod, the inner hole of the link joint is also provided with a tension inserting plate groove and a telescopic inserting plate to realize the locking of the tension rod, the rear plate is provided with a tension cylinder and two tension rods penetrating through the plate, each tension rod is provided with an independent power tension cylinder to drive the tension cylinder to move, one end of each tension rod is fixed with the link joint, the other end of the pull rod is fixed with the rod end of the tensioning cylinder through the double-connecting plate, the end of the pull rod is provided with a thin rod, the end of the thin rod penetrates through the double-connecting plate and the pressure sensor and then is locked through a nut, the rear plate is fixedly provided with a displacement sensor, and the measuring rod end of the displacement sensor is connected with the link joint.

Four tensioning equipment include: the device comprises a base, support plates, a variable-pitch mechanism, a lower tensioning module, an upper tensioning module and a pin shaft, wherein the support plates are symmetrically arranged on the base, the inner sides of the two support plates are respectively connected with the variable-pitch mechanism, the variable-pitch mechanism is provided with a cylinder inner cavity, the cylinder inner cavity is provided with an upper piston rod independently extending upwards and a lower piston rod independently extending downwards, the lower tensioning module and the upper tensioning module are respectively provided with a fixed block, the fixed block of each tensioning module is respectively provided with a coaxial vertical through hole, the lower tensioning module and the upper tensioning module are respectively connected below and above the variable-pitch mechanism, the lower piston rod of the variable-pitch mechanism is fixedly connected with the fixed block of the lower tensioning module, the upper piston rod of the variable-pitch mechanism is fixedly connected with the fixed block of the upper tensioning module, and the pin shaft sequentially passes through the vertical through hole of the fixed block of the upper tensioning module, the vertical hole of the variable-pitch mechanism and the vertical through hole of the lower tensioning module, the variable-pitch vertical guide is realized, the lower tensioning module and the upper tensioning module are the same in structure and are respectively provided with a tensioning locking mechanism, and each tensioning locking mechanism is matched with and connected with two tensioning rods in a tensioning mode.

Stretch-draw module includes spanner cover rotary actuator, locking mechanism, the stretch-draw jar that is used for butt joint stretch-draw pole and drive nut to rotate down, and spanner cover rotary actuator includes: two connecting wrench sleeves II which are parallel to each other, a driver gear box body and two motors II, wherein the driver gear box body is provided with the connecting wrench sleeves II and the motors II, the torque output by the motors II is transmitted to the connecting wrench sleeves II through a gear, the two motors independently output a power to respectively drive the corresponding connecting wrench sleeves II to rotate, two stretching cylinders are connected behind the wrench sleeve rotating driver and fixedly connected through two side plates and a middle plate which are vertically arranged in parallel, the two stretching cylinders respectively correspond to the connecting wrench sleeves II, two guide cavities are arranged between the side plates and the middle plate, a link joint II is respectively arranged in each cavity, the link joint II is provided with an inner hole which is butted with a stretching rod end, the link joint II is provided with an inserting plate groove and is matched with an inserting plate for locking the stretching rod, and the cavity formed by the side plates and the middle plate and the link joint II which contains axial displacement in the cavity form a locking mechanism, each tensioning cylinder is provided with an axial through hole, a second pulling rod is arranged in the axial through hole, one end of the second pulling rod is connected with the second chain joint, the other end of the second pulling rod is connected with the rod end of the tensioning cylinder, the tensioning rod is led into an inner hole of the second chain joint in a butt joint mode through a second connecting wrench sleeve and is locked through an inserting plate, the tensioning cylinder drives the second pulling rod to pull the tensioning rod to stretch, and a fixing block is arranged outside a side plate.

The bottom of the mould is provided with a lifting cylinder.

The support plate frame is provided with an oil duct communicated with an external oil source, and the oil duct is communicated with a cylinder inner cavity of the variable pitch mechanism.

Four forming cavities are arranged in the die.

Compared with the prior art, the invention can obtain the following technical effects: the sleeper production and streamlined production have been realized, need not hoisting equipment and intervene, automatic butt joint, stretch-draw, locking, the compactness of device is ultrahigh when tensioning device possesses interval regulation, the transmission structure integrated level is high, control regulation precision is high, hydraulic control stepless speed regulation, displacement and pressure data accurate control and feedback, the sensor setting is maintained conveniently, equipment modularization sets up, on-the-spot maintenance ability is strong, sleeper production that different reinforcing bar intervals are satisfied in sleeper production, four sleeper synchronous production can increase the productivity or reduce the productivity.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a cross-sectional view of the invention taken along line A-A of FIG. 1;

FIG. 3 is a schematic perspective view of a dual tensioning mechanism of the present invention;

FIG. 4 is a schematic front view of a dual tensioning mechanism of the present invention;

FIG. 5 is a schematic perspective view of four tensioning mechanisms of the present invention;

FIG. 6 is a schematic perspective view of a dual tensioning device of the present invention;

FIG. 7 is a schematic half-section view of a dual root tensioning device of the present invention;

FIG. 8 is a schematic view of the four tensioning devices of the present invention assembled and exploded;

FIG. 9 is a schematic front view of four tensioning devices of the present invention;

FIG. 10 is a schematic forward view of a lower tension module of the present invention;

FIG. 11 is a cross-sectional view of the invention taken along line 10B-B;

FIG. 12 is a schematic half-section view of the pitch mechanism of the present invention.

Wherein, 1-frame body, 2-track, 3-shifting beam I, 4-slide block, 5-cylinder seat, 6-pushing cylinder I, 7-double tensioning device, 8-lower pressing plate, 9-upper pressing plate, 10-chain plate, 11-mould, 12-tension rod, 13-lifting cylinder, 14-frame body II, 15-shifting beam II, 16-cylinder seat II, 17-pushing cylinder II, 18-four tensioning device, 701-rear plate, 702-front plate, 703-connecting plate, 704-integral piston rod, 705-double connecting plate, 706-pressure sensor, 707-pull rod, 708-motor, 709-connecting wrench sleeve, 710-inserting plate cylinder, 711-link joint, 712-displacement sensor, 1801-base, 1802-a variable pitch mechanism, 1803-a lower tensioning module, 1804-an upper tensioning module, 1805-a pin shaft, 1803-1-a gear, 1803-2-a connecting spanner sleeve II, 1803-3-a motor II, 1803-4-a tensioning cylinder body, 1803-5-a pull rod II, 1803-6-a link joint II, 1803-07-a lifting cylinder, 1803-8-a pulling cylinder piston rod, 1803-9-a pressure plate, 1803-10-a force sensor and 1803-11-a fixed block.

Detailed Description

As shown in fig. 1-2, the sleeper tensioning equipment includes a mold 11, a tension rod 12, two tensioning mechanisms, four tensioning mechanisms, tension rods 12 are arranged on two sides of the mold 11, a plurality of forming cavities for pouring sleepers are arranged in the mold, as shown in fig. 1, four forming cavities are arranged in the mold, six prestressed steel bars are arranged in each forming cavity and connected with the tension rod, the left side tension end of the mold in a single cavity is two adjacent tension rods, the right side tension end of the mold in the same single cavity is four tension rods adjacent to each other, two tensioning mechanisms are arranged corresponding to the two adjacent tension rod ends, four tensioning mechanisms are arranged corresponding to the four tension rod ends adjacent to each other, as shown in fig. 2, a plurality of lifting cylinders 13 which are lifted synchronously are arranged at the bottom of the mold between the two tensioning mechanisms and the four tensioning mechanisms.

As shown in fig. 3, the two tensioning mechanisms include a frame body 1, a movable beam 3, a push cylinder 6, two tensioning devices 7, two rails 2 arranged side by side are arranged on the frame body 1, a slider 4 adapted to the rail 2 is arranged at the bottom of the movable beam 3, a cylinder base 5 is fixedly arranged at the outer end of the frame body 1, the push cylinder 6 is fixed on the cylinder base 5, a piston rod of the push cylinder 6 is connected with the movable beam 3 and slides along the rail 2 along the movable beam 3, the movable beam 3 is distributed and provided with the two tensioning devices 7, each two tensioning device 7 is provided with a tensioning locking hole channel butted with two adjacent tensioning rods in an adaptive manner, as shown in fig. 6-7, each two tensioning device 7 comprises: the pressure block, the rear plate 701, the front plate 702, the connecting plate 703, the integral piston rod 704, the double connecting plates 705, the pressure sensor 706, the pull rod 707, the motor 708, the connecting wrench sleeves 709, the flashboard cylinder 710, the link joint 711 and the displacement sensor 712, wherein the rear plate 701 and the front plate 702 are connected through the connecting plate 703, the front plate 702 is provided with two adjacent connecting wrench sleeves 709, the pressure block is arranged on the butt end face of the double tensioning device 7, the connecting wrench sleeves 709 comprise a cylinder body, outer teeth, fins, grooves and one-way teeth, the outer teeth are arranged in the middle of the outer cylinder body, the fins are arranged at the front end of the cylinder body and preferably symmetrically arranged, the edges of the fins are transited to the grooves for leading in nuts to enter the grooves of the wrench, the groove openings are lower than the fins, the one-way teeth are arranged at the rear end of the cylinder body, the connecting wrench sleeves 709 are used for leading in the pull rod to realize the screwing of the nuts, and the gear box and the motor 708 are further arranged on the front plate 702 corresponding to each connecting wrench sleeve 709, a driving shaft of a motor 708 is connected with a gear, the gear is engaged with the outer teeth of a connecting wrench sleeve 709, two rectangular cavities are arranged between a back plate 701 and a front plate 702, a rectangular link joint 711 is arranged in each cavity, the link joint 711 is provided with an inner hole abutting against the end of a tensioning rod, an inserting plate groove is further arranged in the inner hole of the link joint 711, a telescopic inserting plate is arranged in the inserting plate groove, a locking hole for locking the tensioning rod is arranged in the telescopic inserting plate, a lifting cylinder support is fixedly arranged outside the link joint 711, an inserting plate cylinder 710 is fixedly arranged on the lifting cylinder support, the rod end of the inserting plate cylinder 710 is connected with a driving telescopic inserting plate, the back plate 701 is provided with a tensioning cylinder and a tensioning rod 707 passing through the plate, one end of the tensioning rod 707 is fixed with the link joint 711, the tensioning cylinder is a cylinder body fixed on the back plate 701, an integral piston rod 704 is arranged in the cylinder body, the tensioning cylinders are preferably symmetrically arranged, the tensioning cylinder 707 is positioned at the middle position of two adjacent tensioning cylinders, and the two adjacent tensioning cylinders act on the tensioning rod 707 together, specifically, rod ends of two adjacent tensioning cylinders are connected through a double-link plate 705, a thin rod is arranged at the end of a pull rod 707, the end of the thin rod penetrates through the double-link plate 705 and a pressure sensor 706 and then is locked through a nut, the thrust of the tensioning cylinders sequentially acts on the double-link plate 705, the pressure sensor 706 and the pull rod 707 to enable a link joint 711 to generate displacement, a displacement sensor 712 is fixedly arranged on a rear plate 701, and the measuring rod end of the displacement sensor 712 is connected with the link joint 711.

As shown in fig. 5, the four tensioning mechanisms include a frame body two 14, a moving beam two 15, a pushing cylinder two 17, and four tensioning devices 18, the frame body two 14 is provided with two parallel rails, the bottom of the moving beam two 15 is provided with a sliding block adapted to the rail 2, the outer end of the frame body two 14 is fixedly provided with a cylinder base two 16, the pushing cylinder two 17 is fixed to the cylinder base two 16, a piston rod of the pushing cylinder two 17 is connected with the moving beam two 15 and pushes and pulls the moving beam two 15 to slide along the rail 2, the moving beam two 15 is distributed with a plurality of four tensioning devices 18, each four tensioning device 18 is provided with a tensioning locking pore passage adapted to and butted with four pull rods, as shown in fig. 8-9, the four tensioning devices 18 include a base 1801, symmetrically arranged support plate frames, a pitch varying mechanism 1802, a lower tensioning module 1803, an upper tensioning module 1804, and a pin 1805, the base 1801 is provided with a shaft hole for mounting and fixing with a host, the two support plate frames are vertically and symmetrically arranged on the base 1801, the inner sides of the two support frames are respectively connected with a variable-pitch mechanism 1802, the support frame is provided with an oil duct communicated with an external oil source, as shown in figure 12, the variable-pitch mechanism 1802 comprises a cylinder body with a rectangular shape, the cylinder body is provided with a vertical hole and a cylinder inner hole cavity, the cylinder inner hole cavity is provided with an upper piston rod and a lower piston rod which are integrated by a piston and a rod, the rod end is provided with an internal thread, the rod of the upper piston rod extends upwards, the rod of the lower piston rod extends downwards, the rod hole and a piston shaft are sealed, the cylinder inner hole cavity is divided into an upper rod cavity, a lower rod cavity and a rodless cavity, wherein the rodless cavity is provided with a hole externally connected with the oil duct of the support frame, and the upper rod cavity and the lower rod cavity are converged through the externally connected support frame oil duct.

As shown in fig. 10 and 11, the lower tension module 1803 includes: the device comprises a box front plate, a pressing block, a second connecting spanner sleeve 1803-2, a gear box, a side plate, a middle plate, a cylinder rear plate, a tensioning cylinder body 1803-4, a fixing block 1803-11, a lifting cylinder 1803-07, a second link joint 1803-6, a lifting cylinder support, a second pull rod 1803-5, a pressing plate 1803-9, a force sensor, a pulling cylinder piston rod 1803-8, a pulling cylinder guide sleeve, a pulling cylinder pressing cover, a second motor 1803-3, a gear 1803-1, a sealing shaft sleeve and a displacement sensor. And the second connecting spanner sleeve 1803-2 is used for introducing a tension rod to realize the screwing of the nut.

Four adjacent tension rods are arranged aiming at a die, a lower tension module 1803 is provided with two groups of tension locking mechanisms matched with the lower tension module, as shown in the tension locking mechanisms of a section of figure 11, a gear 1803-1 is arranged in a gear box and is fixed by a box front plate sealing cover, coaxial holes are arranged on the gear box and the box front plate, a second wrench sleeve 1803-2 is arranged in the hole, a pressing block is arranged on the butt joint end surface of the tension locking mechanism, external teeth are meshed with the gear 1803-1, a second motor 1803-3 is fixedly arranged outside the gear box, a driving shaft of the second motor 1803-3 extends into the gear box to drive the connecting gear 1803-1, the wrench sleeve rotary driver is formed, a tension cylinder is connected behind the gear box and is fixedly connected with the middle plate through two side plates, the middle plate, a rectangular cavity is arranged between the side plates and the middle plate, a second rectangular link joint 1803-6 is arranged in the cavity, the second link joint 1803-6 is provided with an inner hole abutting against the tension rod end, the second link joint 1803-6 is also provided with an insert plate groove, a telescopic insert plate is arranged in the insert plate groove, a lock hole locking the tension rod is arranged in the telescopic insert plate, the second link joint 1803-6 is externally and fixedly provided with a lifting cylinder support, the lifting cylinder support is fixedly provided with a lifting cylinder 1803-07, the rod end of the lifting cylinder 1803-07 is connected with and drives the telescopic insert plate, the inlet end of the inner hole of the second link joint 1803-6 is provided with a second unidirectional tooth in the axial direction, the second unidirectional tooth is correspondingly blocked with the unidirectional tooth, and the rotation direction limitation of the second connecting wrench sleeve 1803-2 is realized,

as shown in fig. 11, a cylinder inner cavity of a tensioning cylinder body 1803-4 is provided with a cylinder pulling piston rod 1803-8 with a piston and a rod integrated together, the cylinder pulling piston rod 1803-8 is provided with a through inner hole, the rod end of the cylinder pulling piston rod 1803-8 is sleeved with a cylinder pulling guide sleeve, a cylinder pulling gland is connected with the cylinder pulling cylinder body 1803-4 through a screw to fix the cylinder pulling guide sleeve, the cylinder pulling cylinder body 1803-4 is further provided with a hole for penetrating a second pulling rod 1803-5, the orifice end is provided with a sealing shaft sleeve, a cylinder rear plate is connected with the fixed sealing shaft sleeve through a screw, the middle section of the second pulling rod 1803-5 is provided with a boss, one end of the second pulling rod 1803-5 is connected with a chain connector II 1803-6, the other end of the second pulling rod is provided with a pressing plate 1803-9 and a force sensor 1803-10 after penetrating through the inner hole of the cylinder pulling piston rod 1803-8, and the end is fixed by screwing a nut; two sets of tensioning locking mechanisms are adjacent and share parts: the tensioning device comprises a gear box, a box front plate, a cylinder rear plate and a tensioning cylinder body 1803-4, wherein two displacement sensors are fixedly arranged on a middle plate, measuring rods of the two displacement sensors are respectively connected with two chain joints 1803-6 of two groups of tensioning locking mechanisms, the displacement sensors are used for measuring axial telescopic displacement of the two chain joints 1803-6, fixed blocks 1803-11 are fixedly arranged on the outer sides of side plates, the fixed blocks 1803-11 are provided with vertical through holes matched with the vertical holes, and the fixed blocks 1803-11 are provided with connecting holes connected with lower piston rods.

The lower tensioning module 1803 and the upper tensioning module 1804 have the same structure, as shown in fig. 8, the difference is that the two groups of tensioning locking mechanisms are different in distance, and the distance can be adaptively designed according to actual working conditions; the upper and

lower tensioning modules

1803 and 1804 are respectively connected below and above the variable pitch mechanism 1802, the lower piston rod of the variable pitch mechanism 1802 is fixedly connected with the fixed block of the lower tensioning module 1803, the upper piston rod of the variable pitch mechanism 1802 is fixedly connected with the fixed block of the upper tensioning module 1804, the pin shaft 1805 sequentially penetrates through the vertical through hole of the fixed block of the upper tensioning module, the vertical hole of the variable pitch mechanism and the vertical through hole of the fixed block of the lower tensioning module, variable pitch vertical guiding is realized, the variable pitch mechanism 1802 drives the upper piston rod and the lower piston rod to stretch and retract to adjust the distance between the steel bars, and therefore the variable pitch function is realized.

As shown in fig. 4, the distance between two adjacent tensioning devices 7 is adjustable, a fixing rod hole is formed between the rear plate 701 and the front plate 702 and a fixing rod penetrates through the fixing rod, the rod head of the fixing rod is exposed and is pressed and fixed through a lower pressing plate 8 and an upper pressing plate 9 which are fixed on the first movable beam 3, a chain plate 10 is connected between the fixing rods of the two adjacent tensioning devices 7, connecting holes through which the fixing rods penetrate are formed in two ends of the chain plate 10, the two hole distances of the chain plate 10 can be set as required, the distance between the two adjacent tensioning devices 7 can be adjusted by replacing the chain plates 10 with different hole distances, as shown in fig. 5, the fixing rods, the lower pressing plates, the upper pressing plates and the connecting plates are also arranged between the four tensioning devices 18, and the distance adjusting method is the same.

The working mode is as follows:

the working steps are divided into mould preparation, distance adjustment, butt joint, tensioning and locking.

Preparing a mould, as shown in fig. 1-2, transporting the mould 11 to a station, lifting the mould 11 by a lifting cylinder 13 to align the heights of the two tensioning devices 7 and the four tensioning devices 18, so that the axes of a tensioning locking pore channel and a tensioning rod are aligned, operating the two tensioning mechanisms, pushing a moving beam I3 by a pushing cylinder I6 to slide along a track 2, and enabling the moving beam I3 to be distributed and arranged so that the two tensioning devices 7 are close to the left end of the mould 11; the four tensioning mechanisms work simultaneously, the second pushing cylinder 17 pushes the second moving beam 15 to slide along the track 2, and a plurality of four tensioning devices 18 are distributed on the second moving beam 15 and are close to the right end of the die 11.

And adjusting the distance, as shown in fig. 1-5, according to the specification of the sleeper in the mold and/or the mold, judging the distance between sleepers with corresponding specifications, correspondingly, adjusting the adjacent distance between two tensioning devices 7, and adjusting the adjacent distance between four tensioning devices 18, wherein the adjusting method comprises the steps of removing or replacing the pressed lower pressing plate 8 and the pressed upper pressing plate 9, after replacing the chain plate 10 with corresponding dimensions, adjusting the distance between two adjacent tensioning devices 7 or four adjacent tensioning devices 18, and recovering the installation of the lower pressing plate 8, the upper pressing plate 9 and the chain plate 10 to realize the adjustment of the distance in the horizontal direction.

And (3) adjusting the distance between the steel bars, namely automatically adjusting the vertical distances between the lower tensioning modules 1803 and the upper tensioning modules 1804 of the four tensioning devices 18 according to the distance between the steel bars of the sleeper, as shown in fig. 5 and 8-12, judging the vertical rod distances between the four adjacent tensioning rods of the die according to the specification of the die and/or the sleeper in the die, and driving the lower tensioning modules 1803 and/or the upper tensioning modules 1804 to perform lifting displacement by a distance changing mechanism 1802 so that the distances between the lower tensioning modules and the upper tensioning modules are changed and correspond to the four adjacent tensioning rods at the tensioning end of the die.

1-11, a first pushing cylinder 6 pushes a first moving beam 3 to slide along a track 2, a plurality of double tensioning devices 7 are distributed on the first moving beam 3 and are arranged near the left end of a mould 11, two tensioning rods are respectively butted into corresponding connecting spanner sleeves 709, a lifting and inserting plate cylinder 710 is connected with a driving telescopic inserting plate clamp to clamp the tensioning rods to complete the butt joint, a link joint 711 and the tensioning rods are integrated and relatively fixed, and the connecting spanner sleeves 709 are used for clamping and tripping locking nuts; the four tensioning mechanisms work simultaneously, the second pushing cylinder 17 pushes the second moving beam 15 to slide along the track 2, a plurality of four tensioning devices 18 are distributed on the second moving beam 15 and are close to the right end of the die 11, the four tensioning rods are respectively butted into the second connecting spanner sleeve 1803-2, the lifting cylinder 1803-07 is connected to drive the telescopic plugboard to catch the tensioning rods to complete butt joint, and the second connecting spanner sleeve 1803-2 catches the locking nuts.

Tensioning, as shown in fig. 1-11, pressing blocks of two tensioning devices 7 and four tensioning devices 18 abut against two ends of a mold, the two tensioning devices 7 are tensioned, a rodless cavity of a tensioning cylinder supplies oil, oil pressure acts on an integral piston rod 704, two adjacent tensioning cylinders jointly act on a pull rod 707, the thrust of the tensioning cylinder sequentially acts on a double connecting plate 705, a pressure sensor 706 and the pull rod 707 to enable a link joint 711 to generate displacement, the tensioning rod stretches a steel bar, the tensioning synchronization is accurately controlled by a hydraulic system supplied with oil by the tensioning cylinder, and the pressure sensor 706 and the displacement sensor 712 transmit data to a control system and control the output pressure and flow of the hydraulic system by the control system; four tensioning devices 18 are used for tensioning, the structures of a lower tensioning module 1803 and an upper tensioning module 1804 are the same and work synchronously, for example, two groups of tensioning locking mechanisms work synchronously, cylinder inner cavities of adjacent sealing shaft sleeves in tensioning cylinder bodies 1803-4 are supplied with pressure, oil pressure acts on a tensioning cylinder piston rod 1803-8, thrust sequentially acts on a pressing plate 1803-9, a force sensor 1803-10 and a tensioning rod 1803-5 to enable a link joint II 1803-6 to generate displacement, the tensioning rod stretches a steel bar, the tensioning synchronism is accurately controlled by a hydraulic system supplied with oil by the tensioning cylinder, and the force sensor 1803-10 and the tensioning sensor transmit data to a control system and control the output pressure and flow of the hydraulic system by the control system; and the two tensioning devices 7 and the four tensioning devices 18 are used for tensioning synchronously.

Locking, as shown in fig. 1-11, the two tensioning devices 7 are locked, the motor 708 drives the gear to rotate, the gear is meshed with the outer teeth of the connecting wrench sleeve 709, the connecting wrench sleeve 709 is rotated, the wing pieces of the connecting wrench sleeve 709 are clamped with the protrusions outside the nuts, the nuts are rotated and locked relative to the tensioning rods, the inserting plate cylinder 710 works to drive the telescopic inserting plate, and the link joint 711 is separated from the tensioning rods; the four tensioning devices 18 are locked, the motor II 1803-3 drives the gear 1803-1 to rotate and is meshed with the outer teeth of the connecting spanner sleeve II 1803-2, the connecting spanner sleeve II 1803-2 is made to rotate, the wing pieces of the connecting spanner sleeve II 1803-2 are clamped with the protrusions outside the nuts, the nuts are made to rotate and lock relative to the pull rod II 1803-5, and the lifting cylinders 1803-07 work to drive the telescopic insertion plates, so that the link joints II 1803-6 are separated from the pull rod II 1803-5.

And the two tensioning mechanisms work, the first pushing cylinder 6 pulls the first moving beam 3 to slide along the track 2, so that the two tensioning devices 7 are distributed on the first moving beam 3 and separated from the die 11, the second pushing cylinder 17 pulls the second moving beam 15 to slide along the track 2, so that the four tensioning devices 18 are distributed on the second moving beam 15 and separated from the die 11, and tensioning is completed.

Claims

1. Sleeper stretch-draw equipment, including mould, stretch-draw pole, tensioning mechanism, the mould outside sets up the stretch-draw pole, corresponds the mould outside stretch-draw pole and is provided with tensioning mechanism, its characterized in that: tensioning mechanism includes two tensioning mechanism, four tensioning mechanism, a plurality of shaping appearance chambeies that are used for pouring the sleeper in the mould, every shaping holds the intracavity and sets up six prestressed reinforcement and stretch-draw pole to be connected, and single mould left side stretch-draw end that holds the chamber is two adjacent stretch-draw poles, and same single mould right side stretch-draw end that holds the chamber is four stretch-draw poles that close on each other, and the mould left end sets up two tensioning mechanism, and the mould right-hand member sets up four tensioning mechanism, two tensioning mechanism include: push away jar (6), support body (1), walking beam (3), two tensioning devices (7), the walking beam (3) is gone up the distribution and is set up a plurality of two tensioning devices (7), and every two tensioning device (7) are provided with the stretch-draw locking pore with the butt joint of two adjacent stretch-draw pole adaptations, walking beam (3) slide and set up in support body (1), support body (1) set up and push away jar (6) drive walking beam (3) slide butt joint stretch-draw pole, four stretch-draw mechanisms include: support body two (14), walking beam two (15), push away jar two (17), four tensioning equipment (18), the distribution sets up a plurality of four tensioning equipment (18) on walking beam two (15), and every four tensioning equipment (18) are provided with the stretch-draw locking pore with four stretch-draw pole adaptation docks, walking beam two (15) slide and set up in support body two (14), support body two (14) set up and push away jar two (17) drive walking beam two (15) slide to the stretch-draw pole.

2. Tie tensioning device according to claim 1, characterized in that: be provided with the link joint between adjacent two tensioning device (7), be provided with the link joint between four adjacent tensioning device (18), the link joint both ends are provided with the connecting hole, walking beam one (3), walking beam two (15) are fixed respectively and are provided with the holding down plate, the holding down plate adaptation is provided with the top board, two tensioning device (7), four tensioning device (18) set up the fixed rod hole respectively and wear to establish the dead lever, and the pole head of dead lever exposes, and the fixed dead lever of holding down plate and top board pressfitting, the connecting hole of link joint and the pole head adaptation of dead lever, set up the distance between the adjacent two tensioning device (7) of link joint restraint between adjacent two tensioning device (7), set up the distance between the adjacent four tensioning device (18) of link joint restraint between adjacent four tensioning device (18).

3. Tie tensioning device according to claim 2, characterized in that: the double tensioning device (7) comprises: the rear plate (701), the front plate (702), the connecting plate (703), the double connecting plates, the pressure sensor, the pull rod, the motor, the connecting spanner sleeves, the link joint and the displacement sensor, wherein the rear plate (701) and the front plate (702) are connected through the connecting plate (703), the front plate (702) is provided with two adjacent connecting spanner sleeves (709), the connecting spanner sleeves (709) are used for introducing the tensioning rod to realize the screwing of the nut, the connecting spanner sleeves (709) are provided with external teeth, the front plate (702) is also provided with a gear box and two motors, the two motors are respectively driven by the gear box to be meshed with the external teeth of the two connecting spanner sleeves to rotate, two rectangular cavities are arranged between the rear plate (701) and the front plate (702), the link joints are respectively arranged in the two cavities, the link joint is provided with an inner hole for abutting against the end of the tensioning rod, the inner hole of the link joint is also provided with an inserting plate groove and a telescopic inserting plate for realizing the locking of the tensioning rod, the tensioning rod is arranged on the rear plate (701) and two pull rods which pass through the tensioning cylinder and the plate, each pull rod is provided with an independent power tensioning cylinder for driving the tensioning cylinder to stretch and displace, one end of each pull rod is fixed with the link joint, the other end of each pull rod is fixed with the rod end of the tensioning cylinder through a double-connecting plate, the end of each pull rod is provided with a thin rod, the end of each thin rod penetrates through the double-connecting plate and the pressure sensor and then is locked through a nut, the rear plate (701) is fixedly provided with a displacement sensor, and the measuring rod end of the displacement sensor is connected with the link joint.

4. Tie tensioning device according to claim 3, characterized in that: the four tensioning devices (18) comprise: the device comprises a base (1801), symmetrically arranged support plates, a variable-pitch mechanism (1802), a lower tensioning module (1803), an upper tensioning module (1804) and a pin shaft (1805), wherein the two support plates are vertically and symmetrically arranged on the base (1801), the inner sides of the two support plates are respectively connected with the variable-pitch mechanism (1802), the variable-pitch mechanism (1802) is provided with a cylinder inner cavity, the cylinder inner cavity is provided with an upper piston rod independently extending upwards and a lower piston rod independently extending downwards, the lower tensioning module (1803) and the upper tensioning module (1804) are respectively provided with a fixed block, the fixed blocks of the tensioning modules are respectively provided with coaxial vertical through holes, the lower tensioning module (1803) and the upper tensioning module (1804) are respectively connected below and above the variable-pitch mechanism (1802), the lower piston rod of the variable-pitch mechanism (1802) is fixedly connected with the lower tensioning module (1803), the upper piston rod of the variable-pitch mechanism (1802) is fixedly connected with the fixed block of the upper tensioning module (1804), the pin shaft (1805) sequentially penetrates through a vertical through hole of the upper tensioning module fixing block, a vertical hole of the variable-pitch mechanism and a vertical through hole of the lower tensioning module fixing block to realize variable-pitch vertical guiding, the lower tensioning module (1803) and the upper tensioning module (1804) are identical in structure and are respectively provided with a tensioning locking mechanism, and each tensioning locking mechanism is matched with and connected with two tensioning rods in a tensioning mode.

5. Tie tensioning device according to claim 4, characterized in that: the lower tensioning module (1803) comprises a wrench sleeve rotary driver, a locking mechanism and a tensioning cylinder, wherein the wrench sleeve rotary driver is used for butt-joint tensioning rod and driving a nut to rotate, and the wrench sleeve rotary driver comprises: two connecting wrench sleeves II which are parallel to each other, a driver gear box body and two motors II, wherein the driver gear box body is provided with the connecting wrench sleeves II and the motors II, the torque output by the motors II is transmitted to the connecting wrench sleeves II through gears, the two motors independently output a power to respectively drive the corresponding connecting wrench sleeves II to rotate, two stretching cylinders are connected behind the wrench sleeve rotating driver and fixedly connected through two side plates and a middle plate which are vertically arranged in parallel, the two stretching cylinders respectively correspond to the connecting wrench sleeves II, two guide cavities are arranged between the side plates and the middle plate, a link joint II is respectively arranged in each cavity, the link joint II is provided with an inner hole which is butted with a stretching rod end, the link joint II is provided with an inserting plate groove and is matched with an inserting plate for locking the stretching rod, the cavity formed by the side plates and the middle plate and the link joint II which accommodates axial displacement in the cavity form a locking mechanism, every stretch-draw jar sets up axial through hole, sets up pull rod two in the axial through hole, two one ends of pull rod are connected chain joint two, the other end and are connected stretch-draw jar rod end, stretch-draw rod is by connecting two butt joint introduction of spanner cover to the hole and the picture peg locking of chain joint two, stretch-draw jar drive pull rod two pulls stretch-draw rod stretch-draw, the sideboard sets up the fixed block outward.

6. The tie tensioning device of any of claims 1 to 5, wherein: and a lifting cylinder (13) is arranged at the bottom of the mould.

7. Tie tensioning device according to claim 5, characterized in that: the support plate frame is provided with an oil duct communicated with an external oil source, and the oil duct is communicated with a cylinder inner cavity of the variable pitch mechanism.

8. Tie tensioning device according to claim 1, characterized in that: four forming cavities are arranged in the die.