CN107601271B

CN107601271B - Frog hoist

Info

Publication number: CN107601271B
Application number: CN201711062162.8A
Authority: CN
Inventors: 孙健; 蒋文戈
Original assignee: YANGZHOU SHENLI LIFTING TOOLS MANUFACTURING CO LTD
Current assignee: YANGZHOU SHENLI LIFTING TOOLS MANUFACTURING CO LTD
Priority date: 2017-11-02
Filing date: 2017-11-02
Publication date: 2024-04-09
Anticipated expiration: 2037-11-02
Also published as: CN107601271A

Abstract

The invention relates to a frog lifting appliance in the field of railway construction devices, wherein auxiliary lifting beams are arranged on the lower sides of two main lifting beams, and two groups of lifting components are symmetrically arranged on sliding rods arranged in the auxiliary lifting beams; each group of lifting components comprises a sliding sleeve which is connected to two connecting plates which are parallel to each other; the lower end of the connecting plate is provided with a sliding part which is arranged in a longitudinal chute arranged on the lower support frame in a sliding way, the lower side of the lower support frame is hinged with a chuck, and the chucks on the hoisting component are arranged in opposite directions to form a clamping opening for clamping the frog; a travel shutter is also arranged between the connecting plates; an adjusting screw rod is arranged in the auxiliary hanging beam in parallel with the sliding rod, a nut is arranged on the adjusting screw rod in a meshed mode, and the nut is connected with a corresponding connecting plate. When the railway frog is in operation, the main hanging beam is pulled up and put down once, and the travel shutter is operated once, so that the chucks can be exchanged between locking and releasing states, and the hoisting and the unloading of the frog are automatically completed, and the railway frog is suitable for railway construction.

Description

Frog hoist

Technical Field

The invention relates to a lifting appliance for lifting steel rails, in particular to a steel rail lifting appliance for high-speed rail construction.

Background

Frog means a device for passing a railway wheel from one rail to another rail, consisting of a fork core, wing rails and coupling elements. According to the plane form, two types of straight frog and curve frog are provided; there are two kinds of fixed frog and movable frog according to the construction type. The straight fixed frog is divided into two kinds, namely a cast frog and a rail combined frog. The frog generally comprises an upper rail part and a lower base part connected with each other, wherein the side surface of the rail part is provided with a partial recess, the single-side section of the rail part is generally I-shaped, and the frog in China is about 14m in length and is difficult to hoist on site.

In the Chinese patent database, a single steel rail sling is disclosed, the application number of which is: 200820034624.5; filing date: 2008-04-15; the device comprises an upper yoke plate and a hook plate, wherein the upper yoke plate and the hook plate are respectively pairwise and symmetrically arranged in left and right, the upper ends of the upper yoke plates are hinged through upper pin shafts, the upper ends of the hook plates are in one-to-one correspondence with the upper yoke plates and are hinged through left and right pin shafts, the lower ends of the hook plates are respectively provided with hook heads capable of clamping steel rails, the four hook plates are hinged through lower pin shafts, a hinging point between the lower pin shafts and the hook plates is positioned at the upper side of the hook heads, a stroke shutter is arranged between the upper pin shafts and the lower pin shafts, the stroke shutter comprises a sleeve, a rotating shaft is arranged in the sleeve in a matched manner, the upper ends of the sleeve are relatively fixed with the upper pin shafts, the lower ends of the rotating shaft are connected with the lower pin shafts through rotatable joints, a circumferential groove is formed in the rotating shaft, after the circumferential groove is circumferentially unfolded in an X-Y coordinate system, the upper wall surface and the lower wall surfaces of the circumferential groove are arranged in a zigzag wave, the wave crest and the trough of the zigzag wave are in one-to-even number, and the crest Y of the zigzag wave crest of the zigzag wave on the upper wall surface axially corresponds to the descending segment of the zigzag wave on the lower wall surface; a longitudinal straight groove extending upwards along the surface of the rotating shaft is arranged at each crest on the upper wall surface, at least one guide pin shaft with the diameter smaller than the width of the longitudinal straight groove is arranged on the side surface of the sleeve, and the guide pin shaft is inserted into the circumferential groove along the radial direction of the sleeve. When the lifting device starts to work, the hook heads keep opening to lift the device upwards so as to break out and lift the lifting ring, then the lifting ring is put down from the right upper side of the steel rail, the hook plate at the lower pin shaft contacts the steel rail and continues to descend, the rotating shaft moves upwards relative to the sleeve, the guide pin shaft moves downwards relative to the rotating shaft, the rotating shaft is pushed to rotate a certain angle until the guide pin shaft reaches the trough of the saw-tooth wave on the lower wall surface, the hook heads keep opening, then the lifting ring is lifted upwards, under the action of gravity, the lower end of the upper connecting plate and the hook plate move downwards relative to the upper pin shaft, the rotating shaft moves downwards relative to the sleeve, and when the rotating shaft moves downwards, the guide pin shaft moves upwards relative to the rotating shaft from the trough of the saw-tooth wave on the lower wall surface to contact the upper wall surface to the upper wall surface of the axial groove, and moves upwards along the ascending section of the saw-tooth wave on the upper wall surface, the rotating shaft is pushed to rotate a certain angle, the guide pin shaft enters the longitudinal straight groove, at this moment, the hook heads at the left and right sides can move oppositely to clamp the steel rail, the lifting ring can be safely lifted when the lifted steel rail needs to be lifted downwards, the whole device is lifted downwards, after the steel rail contacts the supporting surface, the steel rail moves upwards, the sleeve moves upwards relative to the trough of the saw-tooth wave groove moves downwards, the saw-tooth wave groove moves upwards relative to the rotating shaft, the saw-tooth wave groove moves downwards relative to the rotating shaft, and reaches a certain angle of the rotating shaft, and moves upwards along the straight groove, and rotates upwards, and rotates downwards, until the guide pin shaft reaches a crest of the saw-tooth wave adjacent to the longitudinal straight groove which is just separated on the upper wall surface, at the moment, the hook head keeps in an open state, and the whole device can be pulled up for preparing for the next lifting of the steel rail. The invention pulls up and puts down once, the travel shutter acts once, the hook head can be exchanged between the open and locking states, the pulling up and putting down once can automatically finish the open and the tightening of the hook head, the operator is not required to manually open the hook head on site, and the working efficiency is improved.

The defects are that: the upper yoke plate and the hook plate of the device are connected in a hinged mode, the bearing strength is poor, in addition, the structure is not compact enough, and the device cannot be used for hoisting frog.

Disclosure of Invention

The invention aims to provide a frog lifting appliance, which can rapidly and safely lift a frog.

The purpose of the invention is realized in the following way: the frog lifting appliance comprises two main lifting beams which are arranged in parallel, wherein at least two auxiliary lifting beams are arranged at intervals between the lower sides of the main lifting beams, sliding rods are arranged in the auxiliary lifting beams, and two groups of lifting components are symmetrically arranged on the sliding rods; each group of lifting components comprises a sliding sleeve which is connected to two connecting plates which are parallel to each other; the lower end of the connecting plate is provided with a sliding part which is arranged in a longitudinal chute arranged on the lower support frame in a sliding way, the lower side of the lower support frame is hinged with a chuck, and the chucks on the two groups of hoisting components are arranged in opposite directions to form a clamping opening for clamping the frog; the clamping head comprises an arc-shaped clamping part, a driving part positioned above the clamping part and a limiting part positioned on the upper side of the driving part; a travel shutter is further arranged between the two mutually parallel connecting plates, the travel shutter comprises a movable head which is arranged at the lower end and can move up and down, a guide pin is arranged on the movable head, a guide groove is longitudinally arranged on the lower support frame, and the guide pin is matched in the guide groove; when the main hanging beam integrally moves downwards to enable the driving part to contact the frog, the frog pushes the clamping head to rotate to enable the clamping part to extend into the side surface recess of the frog, and at the moment, the movable head just can move to be abutted against the limiting part; and adjusting screws are arranged in the auxiliary hanging beam in parallel with the sliding rods, the adjusting screws are in one-to-one correspondence with the hanging components, nuts are arranged on the adjusting screws in a meshed mode, the nuts are connected with corresponding connecting plates, the lower side of the main hanging beam is further connected with a reinforcing beam, and hanging strips are arranged on the reinforcing beam.

When the frog is contacted with the frog, the frog drives the clamping head to rotate through the driving part, so that the clamping part stretches into the side surface recess of the frog track part, at the moment, the main hanging beam is continuously lowered, the sliding part moves downwards in the sliding groove to drive the movable head to move downwards and lean against the limiting part, the main hanging beam is continuously lowered, the stroke shutter is triggered, the main hanging beam is lifted at the moment, the movable head does not lift along with the lifting of the main hanging beam, and the two clamping heads are locked, so that the frog can be lifted; when the main hanging beam is required to be released, the main hanging beam is downwards released, the frog is firstly contacted with the ground, and then the stroke shutter is operated again, so that the movable head can ascend along with the ascending of the main hanging beam, when the main hanging beam is lifted again, the movable head is separated from the limiting part and is upwards pulled, the chuck is unlocked, and the chuck can rotate and release the frog, so that the main hanging beam can lift the next frog. In the device, the stroke shutter is consistent with the working mode of the stroke shutter in the prior art, the stroke shutter is pulled up and put down once, the stroke shutter acts once, so that the clamping heads can be exchanged between locking and releasing states, the stroke shutter is pulled up and put down once, the lifting and the discharging of the frog are automatically completed, and the operation is convenient. In the device, the space between the lower support frames and the position of the lower support frames below the auxiliary hanging beam can be adjusted through the hand wheels, and when the frog is hung, the device can be adjusted adaptively according to the local width of the frog. The invention can safely hoist the frog and is suitable for railway construction.

In order to be convenient for install fixedly, the main hanging beam inboard links to each other with assisting the hanging beam through the reinforcing plate, and the main hanging beam outside links to each other with assisting the hanging beam through the curb plate.

As a further improvement of the invention, the middle part of the auxiliary hanging beam is provided with a supporting plate, one end of the adjusting screw rod is rotatably supported on the supporting plate, and the other end of the adjusting screw rod penetrates through the outer side plate to be connected with the hand wheel. The backup pad plays the enhancement effect, guarantees that adjusting screw supports reliably.

And a limiting block is arranged on the lower supporting frame, and when the clamping heads rotate to touch the limiting block, the frog can be just clamped by the opening between the clamping heads corresponding to the two groups of lifting components. Through the control of manufacturing accuracy for when the chuck touches the stopper, the clearance that forms between the clamping part is slightly greater than the distance of the local sunken position of frog, can avoid the clamping part to strike the frog from both sides directly like this, causes the damage.

In order to ensure that the distance between the two lower support frames is kept stable in the hoisting process, the two lower support frames corresponding to the lower part of the same auxiliary hoisting beam are connected through a pull rod with adjustable length. The adjustable pull rod limits the opening width of the clamping head, so that the frog is prevented from falling off due to deformation.

As a further improvement of the invention, the lower end of the lower support frame is provided with a notch matched with the shape of the upper part of the frog. The frog can be conveniently clamped into the clamping part.

As a further improvement of the invention, 5 auxiliary hanging beams are uniformly arranged below the main hanging beam at intervals, two reinforcing beams are respectively arranged at two sides of the auxiliary hanging beam at the middle position. The five hoisting points formed by the auxiliary hoisting beams are used for hoisting, so that the frog of 10-20m cannot deform during hoisting, the reinforcing beams provide strong support in the hoisting process, and the integral structure of the device is reinforced.

For convenient hoisting, a hanging piece for connecting hanging strips is arranged on one side of the stiffening beam opposite to each other.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a schematic view of a partial structure of fig. 2.

Fig. 4 is a schematic diagram of the operation of the clamp when clamping a rail.

Fig. 5 is a schematic diagram of the operation of the clip when releasing the rail.

Fig. 6 is a schematic view of the structure of the lower support frame.

Fig. 7 is a partial view of A-A of fig. 1.

The lifting device comprises a main lifting beam 1, a lifting assembly 2, an auxiliary lifting beam 3, a hanging strip 4, a reinforcing beam 5, a reinforcing plate 6, a connecting screw rod 7, a side plate 8, a hand wheel 9, a connecting plate 10, a sliding part 10a, a travel shutter 11, a sliding chute 12, a lower supporting frame 13, a limiting block 14, a clamping head 15, a limiting part 15a, a driving part 15b, a clamping part 15c, a frog 16, a sliding sleeve 17, a sliding rod 18, a regulating screw rod 19, a supporting plate 20, a pull rod 21, a nut 22, a movable head 23, a guide pin 24, a guide groove 25, a notch 26 and a hanging piece 27.

Detailed Description

As shown in fig. 1-7, the frog lifting appliance comprises two main lifting beams 1 which are arranged in parallel, 5 auxiliary lifting beams are uniformly arranged between the lower sides of the main lifting beams 1 at intervals, the inner sides of the main lifting beams 1 are connected with the auxiliary lifting beams through reinforcing plates 6, the outer sides of the main lifting beams 1 are connected with the auxiliary lifting beams through side plates 8, and the main lifting beams 1, the side plates 8 and the reinforcing plates 6 are fixedly connected by two connecting screws 7 which are arranged in parallel; a sliding rod 18 is arranged in each auxiliary hanging beam, and two groups of lifting components 2 are symmetrically arranged on the sliding rod 18; each group of lifting components 2 comprises a sliding sleeve 17, and the sliding sleeve 17 is connected to two connecting plates 10 which are parallel to each other; the lower end of the connecting plate 10 is provided with a sliding part 10a, the sliding part 10a is slidably arranged in a longitudinal chute 12 arranged on a lower support frame 13, the sliding part 10a can longitudinally slide along the chute 12, the lower side of the lower support frame 13 is hinged with a clamping head 15, and the clamping heads 15 on the two groups of hoisting components 2 are oppositely arranged to form a clamping opening for clamping a frog 16; the chuck 15 comprises an arc-shaped clamping part 15c, a driving part 15b positioned above the clamping part 15c and a limiting part 15a positioned on the upper side of the driving part 15 b; a travel switch 11 is further arranged between the two connecting plates 10 which are parallel to each other, the travel switch 11 comprises a movable head 23 which is arranged at the lower end and can move up and down, a guide pin 24 is arranged on the movable head 23, a guide groove 25 is longitudinally arranged on the lower support frame 13, and the guide pin 24 is matched in the guide groove 25; when the main hanging beam 1 moves downwards integrally, and the driving part 15b contacts the frog 16, the frog 16 pushes the clamping head 15 to rotate, so that the clamping part 15c stretches into the side surface recess of the frog 16, and at the moment, the movable head 23 just can move to be abutted against the limiting part 15a; an adjusting screw rod 19 is arranged in the auxiliary hanging beam in parallel with the sliding rod 18, the adjusting screw rods 19 are in one-to-one correspondence with the lifting components 2, nuts 22 are arranged on the adjusting screw rods 19 in a meshed manner, the nuts 22 are connected with corresponding connecting plates 10, a supporting plate 20 is arranged in the middle of the auxiliary hanging beam, one end of each adjusting screw rod 19 is rotatably supported on the supporting plate 20, and the other end of each adjusting screw rod 19 penetrates through the outer side plate 8 to be connected with the hand wheel 9; the lower side of the main hanging beam 1 is also connected with two reinforcing beams 5, and the two reinforcing beams 5 are respectively positioned at the two sides of the auxiliary hanging beam at the middle position; the opposite sides of the stiffening beam 5 are provided with hanging pieces for connecting hanging strips, and the stiffening beam 5 is connected with hanging strips 4 through hanging pieces 27.

The lower support frame 13 is provided with a limiting block 14, and when the clamping heads 15 rotate to touch the limiting block 14, the frog 16 can be just clamped by the openings between the clamping heads 15 corresponding to the two groups of hoisting components 2.

The two corresponding lower support frames 13 below the same auxiliary hanging beam are connected through a pull rod 21 with adjustable length. The lower end of the lower supporting frame 13 is provided with a notch 26 which is matched with the upper shape of the frog 16.

During operation, the space between the lower support frames 13 and the position of the lower support frames 13 below the auxiliary hanging beam can be adjusted through the hand wheels 9, and when the frog 16 is hung, the space can be adjusted adaptively according to the local width of the frog 16. When the frog 16 is hoisted, the main hanging beam 1 is integrally lowered downwards from the frog 16, when the clamping heads 15 contact the frog 16, the frog 16 drives the clamping heads 15 to rotate through the driving parts 15b, so that the clamping parts 15c extend into the side surface recesses of the track parts of the frog 16, at the moment, the main hanging beam 1 is continuously lowered, the sliding parts 10a move downwards in the sliding grooves 12 to drive the movable heads 23 to move downwards and lean against the limiting parts 15a, and the main hanging beam 1 is continuously lowered, so that the stroke shutter 11 is triggered to act, the main hanging beam 1 is hoisted, the movable heads 23 do not ascend along with the ascending of the main hanging beam 1, and the two clamping heads 15 are locked, so that the frog 16 can be hoisted; when the frog 16 needs to be released, the main hanging beam 1 is downwards released, the frog 16 touches the ground firstly, then the stroke shutter 11 acts again, so that the movable head 23 can rise along with the rising of the main hanging beam 1, when the main hanging beam 1 is lifted again, the movable head 23 is separated from the limiting part 15a to be upwards lifted, the clamping head 15 is unlocked, and the frog 16 can be rotated and released, so that the main hanging beam 1 can lift the next frog 16. In this device, the stroke shutter 11 is consistent with the working mode of the stroke shutter 11 in the prior art (see patent ZL200820034624.5 and ZL 200520070269.3), and is pulled up and put down once, the stroke shutter 11 acts once, so that the chucks 15 can be exchanged between the locked and released states, and the lifting and the releasing of the frog 16 are automatically completed once, and the operation is convenient.

The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention. For example, the sling may be replaced directly with an equivalent replacement by a wire, chain, rope, or the like.

Claims

1. The frog lifting appliance is characterized by comprising two main lifting beams which are arranged in parallel, wherein at least two auxiliary lifting beams are arranged between the lower sides of the main lifting beams at intervals, sliding rods are arranged in the auxiliary lifting beams, and two groups of lifting components are symmetrically arranged on the sliding rods; each group of lifting components comprises a sliding sleeve which is connected to two connecting plates which are parallel to each other; the lower end of the connecting plate is provided with a sliding part which is arranged in a longitudinal chute arranged on the lower support frame in a sliding way, the lower side of the lower support frame is hinged with a chuck, and the chucks on the two groups of hoisting components are arranged in opposite directions to form a clamping opening for clamping the frog; the clamping head comprises an arc-shaped clamping part, a driving part positioned above the clamping part and a limiting part positioned on the upper side of the driving part; a travel shutter is further arranged between the two mutually parallel connecting plates, the travel shutter comprises a movable head which is arranged at the lower end and can move up and down, a guide pin is arranged on the movable head, a guide groove is longitudinally arranged on the lower support frame, and the guide pin is matched in the guide groove; when the main hanging beam integrally moves downwards to enable the driving part to contact the frog, the frog pushes the clamping head to rotate to enable the clamping part to extend into the side surface recess of the frog, and at the moment, the movable head just can move to be abutted against the limiting part; and adjusting screws are arranged in the auxiliary hanging beam in parallel with the sliding rods, the adjusting screws are in one-to-one correspondence with the hanging components, nuts are arranged on the adjusting screws in a meshed mode, the nuts are connected with corresponding connecting plates, the lower side of the main hanging beam is further connected with a reinforcing beam, and hanging strips are arranged on the reinforcing beam.

2. The frog assembly of claim 1 wherein said main hanger beam is connected to said auxiliary hanger beam on the inside thereof by a reinforcing plate and on the outside thereof by a side plate.

3. The frog assembly as defined in claim 2, wherein a support plate is provided in the middle of the auxiliary beam, one end of the adjusting screw is rotatably supported on the support plate, and the other end of the adjusting screw is connected to the hand wheel through the side plate.

4. A frog lifting appliance as claimed in any one of claims 1 to 3 wherein the lower support frame is provided with a stop block, and when the jaws are rotated to touch the stop block, the openings between the jaws corresponding to the two sets of lifting assemblies are adapted to grip the frog.

5. A frog hanger according to any one of claims 1-3 wherein two corresponding lower support brackets under the same auxiliary lifting beam are connected by a length adjustable tie rod.

6. A frog hanger as claimed in any one of claims 1 to 3, wherein the lower end of the lower support frame is provided with a notch matching the shape of the upper part of the frog.

7. A frog hanger as claimed in any one of claims 1 to 3 wherein said auxiliary lifting beams are spaced evenly below the main lifting beam by 5 reinforcing beams, two reinforcing beams being provided on each side of the auxiliary lifting beam at intermediate positions.

8. The frog assembly as defined in claim 7, wherein the reinforcement beam is provided with hangers on opposite sides thereof for attaching straps.