Overturn-preventing device for turnout rail welding machine

Abstract

The utility model belongs to the technical field of turnout rail welding machines, and particularly relates to an anti-overturning device for a turnout rail welding machine. An overturn-preventing device for a turnout rail welding machine comprises a walking supporting piece, a fixing base and a connecting rod, wherein one end of the connecting rod is hinged to the walking supporting piece, and the other end of the connecting rod is hinged to the fixing base. A first pin shaft hinged to the connecting rod is arranged at the top of the walking supporting piece. A second pin shaft hinged to the connecting rod is arranged at the end, away from the walking supporting piece, of the fixing base. When the anti-overturning device for the turnout rail welding machine is in a working state, an overturning supporting point of the turnout rail welding machine and the ground is transferred to the outer side of a contact point of the walking roller and the ground from the outer side edge of a crawler belt, so that the distance between an overturning line of the turnout rail welding machine and the gravity center is greatly increased; the stabilizing moment generated by the gravity of the turnout rail welding machine is far greater than the overturning moment generated by inertia load, wind load and the like, so that the risk of rollover of the turnout rail welding machine during operation can be obviously reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of turnout rail welding machines, and particularly relates to an anti-overturning device for a turnout rail welding machine. Background Technique

[0002] In order to meet the requirements of high-speed railway line design and the installation accuracy requirements for on-site laying of railway turnouts, the railway standard has strict requirements for the welding of railway turnout rails. At present, the main methods for rail welding are gas pressure welding, thermite welding, and flash welding; among them, gas pressure welding has the risk of explosion; thermite welding has problems such as poor welding quality, many broken rails, and complex flaw detection requirements. Therefore, the research and development of flash welding is the development trend of rail welding.

[0003] In the prior art, a turnout flash welding machine has been disclosed. For example, the patent with the publication number CN117107568A discloses a rail flash welding vehicle for both railway and highway turnouts, which includes a crawler chassis, a slewing platform, a flash welding machine, and a lifting crane. The crawler chassis includes an axle, and traveling crawlers are respectively arranged on the left and right sides of the axle; the front and rear ends of the axle are respectively connected with a lifting frame through a lifting oil cylinder, and wheel pairs adapted to the rails are arranged on both sides of the lifting frame; a gear disk for connecting the slewing platform and a first slewing oil pump for driving the slewing platform to rotate are arranged on the top of the axle; the flash welding machine is arranged at the front end of the slewing platform; the lifting crane is arranged in the middle of the slewing platform and is used to hoist the head of the flash welding machine from the front end of the slewing platform to the rail welding point for welding and heat treatment operations. The turnout flash welding vehicle disclosed in this patent can take into account the on-line and off-line welding operations of turnout laying and replacement, has the characteristics of flexibility and mobility without occupying tracks, and compared with traditional thermite welding, can significantly improve the turnout welding quality, reduce the turnout laying and replacement frequency, greatly reduce the number of operators required for thermite welding, and reduce the construction operation and turnout operation safety risks.

[0004] It is undeniable that the turnout flash welding vehicle disclosed in this patent can indeed achieve the above effects, but it still has certain deficiencies: when the turnout rail welding machine goes up and down the slope, especially when the slope gradient is 1:1.5, the slope inclination angle reaches 33.4°, and the overturning line of the turnout rail welding machine is close to the center of gravity, with the risk of overturning. The crawler excavator used on railways supports the ground through the front digging bucket, and the combined actions of the multi-stage mechanical arms of the excavator assist the vehicle to go up and down the railway slope. However, due to the limitations of the structural characteristics of the turnout rail welding machine disclosed in this patent, it is impossible to design a multi-stage mechanical arm similar to that of an excavator to assist the vehicle to go up and down the slope.

[0005] Therefore, it is necessary to develop an anti-overturning device for a turnout rail welding machine to ensure that the turnout rail welding machine does not overturn when going up and down the slope.

[0006] The information disclosed in this background art section is only intended to enhance the overall understanding of the background of the present utility model, and should not be regarded as an admission or an implication in any form that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0007] An object of the present utility model is to provide an anti-overturning device for a turnout rail welding machine, which can reduce the risk of side overturning of the turnout rail welding machine when it is on the upper and lower slopes.

[0008] To achieve the above object, the present utility model provides the following technical solutions:

[0009] An anti-overturning device for a turnout rail welding machine, comprising a walking support member, a fixed seat, and a connecting rod with one end hinged to the walking support member and the other end hinged to the fixed seat; a first pin shaft for hinging the connecting rod is provided at the top of the walking support member; a second pin shaft for hinging the connecting rod is provided at one end of the fixed seat away from the walking support member.

[0010] Preferably, the walking support member includes a U-shaped member, at least two hinge shafts spaced apart at the bottom of the U-shaped member, and walking rollers sleeved on the hinge shafts.

[0011] Preferably, the first pin shaft is perpendicular to the hinge shaft.

[0012] Preferably, a locking plate is fixed on one side of the fixed seat, and a first locking hole is provided at the top of the locking plate; a second locking hole is provided on the U-shaped member; when the connecting rod drives the walking support member to rotate 90° around the second pin shaft as the central axis, the first locking hole and the second locking hole correspond and communicate with each other.

[0013] Preferably, mounting holes are symmetrically provided at one end of the fixed seat close to the walking support member; a limit pin shaft is inserted into the mounting hole, and the limit pin shaft is located above the connecting rod.

[0014] Preferably, one end of the limit pin shaft is connected to the fixed seat by a chain.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The anti-overturning device for the turnout rail welding machine of the present utility model can increase the stability of the turnout rail welding machine on a railway slope with an up-and-down slope of 1:1.5. Especially when the vehicle body forms an angle of 0° with the track slope and the anti-overturning device is in the working state, the overturning support point of the turnout rail welding machine on the ground transfers from the outer edge of the crawler to the outside of the contact point between the walking roller and the ground. Thus, the distance between the overturning line and the center of gravity of the turnout rail welding machine is greatly increased, and the stabilizing moment generated by the gravity of the turnout rail welding machine is far greater than the overturning moment generated by inertial loads, wind loads, etc., which can significantly reduce the risk of the turnout rail welding machine tipping over during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the walking support member of the present utility model;

[0019] Figure 3 is an installation schematic diagram of the present utility model;

[0020] Figure 4 is a schematic diagram of the locked state of the walking support member of the present utility model;

[0021] Figure 5 is a schematic diagram of the working state of the walking support member of the present utility model.

[0022] Description of the main reference numerals:

[0023] 1. Walking support member; 11. U-shaped member; 111. Second locking hole; 12. Hinge shaft; 13. Walking roller; 2. Fixed seat; 21. Second pin shaft; 22. Locking plate; 221. First locking hole; 23. Installation hole; 3. Connecting rod; 4. First pin shaft; 5. Limit pin shaft; 6. Rope; 7. Side beam; 8. Slewing platform; 9. Turnout welding machine; E. Railway slope (slope ∠1:1.5); G. Center of gravity of the turnout rail welding machine; a. Overturning point without anti-overturning device; b. Overturning point after installing the anti-overturning device; A. Overturning force arm without anti-overturning device; B. Overturning force arm after installing the anti-overturning device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions of the patent of the present utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment

[0026] Refer to the attachedFigures 1-5 , an anti-overturning device for a turnout rail welding machine, comprising a walking support member 1, a fixed seat 2, and a connecting rod 3 with one end hinged to the walking support member 1 and the other end hinged to the fixed seat 2; a first pin shaft 4 for hinging with the connecting rod is provided at the top of the walking support member 1; a second pin shaft 21 for hinging with the connecting rod 3 is provided at one end of the fixed seat 2 away from the walking support member 1.

[0027] In this embodiment, the walking support member 1 includes a U-shaped member 11, at least two hinge shafts 12 spaced apart at the bottom of the U-shaped member 11, and walking rollers 13 sleeved on the hinge shafts 12; wherein, the first pin shaft 4 is perpendicular to the hinge shafts 12.

[0028] In addition, in this embodiment, a locking plate 22 is fixed on one side of the fixed seat 2, and a first locking hole 221 is opened at the top of the locking plate 22; a second locking hole 111 is provided on the U-shaped member 11; when the connecting rod 3 drives the walking support member 1 to rotate 90° around the second pin shaft 21, the first locking hole 221 and the second locking hole 111 correspond and communicate with each other.

[0029] Secondly, in this embodiment, mounting holes 23 are symmetrically opened at one end of the fixed seat 2 close to the walking support member 1; a limiting pin shaft 5 is inserted into the mounting holes 23, and the limiting pin shaft 5 is located above the connecting rod 3, and one end of the limiting pin shaft 5 is connected to the fixed seat 2 through a chain 6. Rotate the connecting rod 3, when the first locking hole 221 and the second locking hole 111 correspond and communicate with each other, take out the limiting pin shaft 5 from the mounting holes 23 and insert it through the first locking hole 221 and the second locking hole 111, thereby completing the locking of the walking support member 1.

[0030] During use, the fixed seat 2 is welded to the side beam 7 of the traveling track of the turnout rail welding machine 9, and is located below the rotary platform 8 of the turnout rail welding machine 9 and outside the traveling track, without interfering with the rotation of the rotary platform 8 of the turnout rail welding machine 9. It should be noted here that multiple sets of the anti-overturning device for the turnout rail welding machine in this embodiment can be installed. Refer to Figure 4 the orientation, when the connecting rod 3 rotates clockwise 90° around the second pin shaft 21, insert the limiting pin shaft 5 into the mounting holes 23 on the fixed seat 3 (such as Figure 1 the state shown), at this time the limiting pin shaft 5 is located above the connecting rod 3, and the limiting pin shaft 5 can limit the connecting rod 3 from rotating around the first pin shaft 4, thereby restricting the turnout rail welding machine 9 from tipping over. See Figure 5 shown, when the anti-overturning device for the turnout rail welding machine in this embodiment is in the working state, the walking rollers 13 are in contact with the ground, and the overturning support point of the turnout rail welding machine 9 is transferred from point a to point b, and the overturning force arm increases from A to B, thereby greatly enhancing the anti-overturning performance of the turnout rail welding machine.

[0031] The foregoing description of specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present invention, as well as various different selections and modifications. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An anti-overturning device for a turnout rail welding machine, characterized in that: It includes a walking support, a fixed seat and a connecting rod with one end hinged to the walking support and the other end hinged to the fixed seat; a first pin hinged to the connecting rod is provided on the top of the walking support; a second pin hinged to the connecting rod is provided at one end of the fixed seat away from the walking support.

2. The anti-overturning device for a turnout rail welding machine according to claim 1, characterized in that: The walking support comprises a U-shaped component, at least two hinge shafts spaced apart at the bottom of the U-shaped component, and walking rollers sleeved on the hinge shafts.

3. The anti-overturning device for a turnout rail welding machine according to claim 2, characterized in that: The first pin axis is perpendicular to the hinge axis.

4. The anti-overturning device for a turnout rail welding machine according to claim 2, characterized in that: A locking plate is fixed on one side of the fixing seat, and a first locking hole is opened on the top of the locking plate; a second locking hole is provided on the U-shaped member; when the connecting rod drives the walking support to rotate 90° with the second pin shaft as the center axis, the first locking hole and the second locking hole correspond to and are connected.

5. The anti-overturning device for a turnout rail welding machine according to claim 1, characterized in that: The fixing seat is symmetrically provided with mounting holes on one end close to the walking support member; a limiting pin is inserted into the mounting hole, and the limiting pin is located above the connecting rod.

6. The anti-overturning device for a turnout rail welding machine according to claim 5, characterized in that: One end of the limiting pin is connected to the fixing seat through an iron chain.

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