Lifting hanging bracket of steel rail flash welding machine

Abstract

The utility model provides a hoisting hanging bracket of a steel rail flash welding machine, which comprises a telescopic rotating mechanism and a rotating base, the telescopic rotating mechanism is packaged in a container of the steel rail flash welding machine, one end of the telescopic rotating mechanism is connected with the upper end of the rotating base, and the lower end of the rotating base is arranged on a bottom plate of the container; the telescopic rotating mechanism further comprises a telescopic device and a vertical guide part, the telescopic device is arranged in the vertical direction, a telescopic shaft of the telescopic device is connected with a machine head of the steel rail flash welding machine in a hanging mode when the telescopic rotating mechanism is used, and the vertical guide part is connected between the telescopic device and the telescopic rotating mechanism and used for enabling the central axis of the telescopic device to be perpendicular to the ground. According to the utility model, the problems of inaccurate alignment and tedious operation of the hoisting hanging bracket of the movable steel rail flash welding machine in the prior art are solved, and the provided hoisting hanging bracket is accurate in alignment and simple to operate in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track welding, in particular to a lifting hanger for a rail flash welding machine. Background Art

[0002] With the rapid development of high-speed and heavy-haul railways, the track structure has gradually been replaced by continuous welded rail (CWR) from ordinary lines. CWR is an important new technology for railway tracks. A continuous welded rail is formed by welding ordinary rails into long rail bars of a certain length and laying them with long rail bars of a certain length. The welding of long rails is an important link in laying CWR. At present, rail contact welding (flash welding) is one of the main welding methods for rail joints in CWR. Its principle is to use the heat generated by the current passing through the rail contact surface to melt the local end face of the rail, and then complete the welding through upsetting. A rail flash welding machine is a device that uses this principle to weld rails. Rail flash welding machines are divided into fixed and mobile types. Among them, the mobile flash welding machine is used to weld rails at the construction site. After the mobile flash welding machine arrives at the construction site, its lifting hanger is required to place the welding machine head in the position to be welded. The existing lifting hanger usually uses rotation and telescoping methods to complete the placement of the welding machine head. For example:

[0003] The patent with the application number 201220385332.2 discloses a rotary crane for a rail welding machine. A support turntable is installed on a fixed disk, a rotating frame is arranged above the support turntable, a rotatable lifting oil cylinder is installed at one end of the rotating frame, a rotatable telescopic boom is installed at the other end, a telescopic oil cylinder is arranged on the telescopic boom, and a double-row chain is installed at the front end of the telescopic boom. The number of the lifting oil cylinder, the telescopic boom and the telescopic oil cylinder is two. The two telescopic booms are rotatably connected to the lifting oil cylinder and cooperate with the telescopic oil cylinder. During use, the lifting oil cylinder contracts to lift the lifting oil cylinder and the telescopic boom, so as to lift the object fixed on the double-row chain. Then, the extension and contraction of the telescopic oil cylinder can drive the extension and contraction of the telescopic boom, so as to control the distance of the object. The rotation of the support turntable can drive the telescopic boom to rotate, so as to move the object on the double-row chain to the target position. This structure has the characteristics of flexible and convenient operation.

[0004] However, after the above crane moves the lifted object above the target position, for example, when the lifted object is the welding machine head, the welding machine head still needs to be lowered to the corresponding position of the rail weld. The lowering of the welding machine head must rely on the coordinated movement of the lifting cylinder and the extension cylinder to complete. During the lowering process of the coordinated movement, the welding machine head also generates a displacement in the horizontal direction. Specifically, when the lifting cylinder and the extension cylinder expand and contract, they drive the extension boom to rotate or expand and contract, and the lifted welding machine head rotates around the crane crossbeam (here, the connecting part connecting the front ends of the two extension booms is named the crossbeam) to form a parabolic displacement, resulting in a poor alignment accuracy between the welding machine head and the rail weld, and multiple repeated debugging is required to complete the alignment. That is to say, the lifting hanger of the existing mobile rail flash welding machine has inaccurate alignment and cumbersome operation during operation and needs to be improved. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a lifting hanger for a rail flash welding machine, which solves the problems of inaccurate alignment and cumbersome operation of the lifting hanger of the existing mobile rail flash welding machine during operation.

[0006] According to an embodiment of the present invention, a lifting hanger for a rail flash welding machine includes a telescopic rotating mechanism and a rotating base. The telescopic rotating mechanism is encapsulated in the container of the rail flash welding machine and one end thereof is connected to the upper end of the rotating base, and the lower end of the rotating base is arranged on the bottom plate of the container; it further includes:

[0007] A telescopic device, the telescopic device is arranged along the vertical direction and its telescopic shaft is connected to the head of the rail flash welding machine in a hanging manner during use;

[0008] A vertical guiding part, the vertical guiding part is connected between the telescopic device and the telescopic rotating mechanism, and is used to keep the central axis of the telescopic device perpendicular to the ground.

[0009] The technical principle of the present invention is as follows: Since the telescopic device is connected to the telescopic rotating mechanism through the vertical guiding part, after the head of the rail flash welding machine (hereinafter referred to as the welding machine head) is hung on the telescopic shaft of the telescopic device, the telescopic device and the welding machine head can be moved above the target position (i.e., the rail weld) under the combined action of the telescopic rotating mechanism and the rotating base, and then the vertical guiding part is used to adjust the central axis of the telescopic device to be perpendicular to the ground. At this time, the central axis of the telescopic device is the same as the gravity direction of the welding machine head. Also, because the gravity of the welding machine head is relatively large, the telescopic device can maintain a stable state in the vertically downward direction at this time, and the welding machine head is also stable at its position (i.e., above the rail weld); then the telescopic device is started to make its telescopic shaft extend to vertically lower the welding machine head. During the lowering process, the welding machine head maintains a stable state with only vertical displacement due to its own large gravity. When the welding machine head reaches the corresponding position of the rail weld, it can be stopped. At this time, the alignment between the welding machine head and the rail weld is accurate.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. Accurate alignment. Through the cooperative action of the vertical guiding part and the telescopic device, when the telescopic device and the welding machine head move above the target position, they will quickly stabilize in a vertically downward state, so that the welding machine head always maintains a stable state with only vertical displacement during the lowering process, and finally ensures the accurate alignment of the welding machine head with the rail weld.

[0012] 2. Simple operation. The lowering of the welding machine head only needs to be carried out under the control of the telescopic device, without opening the telescopic rotating mechanism or the rotating base, and the operation is simple and the alignment is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0014] Figure 2 It is a schematic structural diagram of another embodiment of the utility model.

[0015] Figure 3 It is a schematic structural diagram of another embodiment of the utility model.

[0016] Figure 4 is Figure 3 a partial enlarged view of...

[0017] In the above-mentioned drawings: mounting frame 110, accommodating cavity 120, rotating member 130, rotating pin 131, bearing seat 141, bearing installation through hole 142, rotating baffle 150, movable limiting space 160, lifting oil cylinder 210, hanging part 220, swing arm 310, swing arm oil cylinder 320, telescopic arm 330, telescopic arm oil cylinder 340, slewing bearing 410, external gear ring 411, turntable 420, limiting groove 421, hydraulic motor 431, reducer 432, reduction gear 433, oil circuit integration block 440, welding base plate 450, L-shaped connecting part 500, container base plate 600. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0019] As shown in Figures 1 - 4As shown in the figure, an embodiment of the utility model provides a lifting hanger for a rail flash welding machine, which includes a telescopic rotating mechanism and a rotating base. The telescopic rotating mechanism is encapsulated in the container of the rail flash welding machine, and one end of the telescopic rotating mechanism is connected to the upper end of the rotating base. The lower end of the rotating base is arranged on the bottom plate 600 of the container; the lifting hanger for the rail flash welding machine further includes a telescopic device and a vertical guiding part; the telescopic device is arranged along the vertical direction, and its telescopic shaft is connected to the head of the rail flash welding machine in a hanging manner during use; the vertical guiding part is connected between the telescopic device and the telescopic rotating mechanism, and is used to keep the central axis of the telescopic device perpendicular to the ground.

[0020] In an embodiment of the utility model, specifically:

[0021] In the utility model, it is a mobile rail flash welding machine. The mobile rail flash welding machine (hereinafter referred to as the welding machine for short) has a container. The relevant components of the lifting hanger (hereinafter referred to as the hanger for short) of the welding machine are integrally stored in the container. Specifically, the telescopic rotating mechanism, the telescopic device and the vertical guiding part are all encapsulated in the container. Most of the rotating base is also inside the container. Others, such as the control cabinet, generator, hydraulic system, chiller, etc., are also installed in the container; after the mobile rail flash welding machine arrives at the construction site, its container can be opened and it can be put into use; among them, the rotating base is the part connecting the welding machine and the container, and the rotating base can drive other parts of the welding machine connected thereto to rotate. Preferably, the rotating base is connected to the bottom plate 600 of the container by welding, and the rotating base can rotate 360° in the direction parallel to the bottom plate 600 of the container. Thus, after the telescopic rotating mechanism first rotates to the corresponding orientation of the target position along with the rotating base, it can itself perform rotational or telescopic movement to change the height and the horizontal distance of the telescopic device thereon from the target position; thus, the cooperation of the rotating base and the telescopic rotating mechanism can move the telescopic device and the welding machine head hung on the telescopic device above the rail weld (i.e., the target position). The telescopic device can be a motor, a cylinder, an oil cylinder, etc., and it is arranged along the vertical direction, that is, its telescopic shaft is arranged vertically downward. The part for hanging the welding machine head is preferably arranged at the bottom end of its telescopic shaft; the telescopic device is connected to the telescopic rotating mechanism through the vertical guiding part. Preferably, the end of the telescopic device far from its telescopic shaft is arranged on the vertical guiding part, and the vertical guiding part is then connected to the telescopic rotating mechanism; there are many ways for the vertical guiding part to realize its vertical guiding function, which is relatively flexible. For example, a position sensor can be used to keep the telescopic device vertical. Preferably, it can also use a specific structure to limit the swinging direction and swinging amplitude of the telescopic device so as to quickly control the telescopic device in the vertical direction; when the telescopic device is in a vertical state, the welding machine head hung on it will also be stable below the telescopic device under the action of its own large gravity, and then under the action of the telescopic device, the welding machine head can be stably lowered to the corresponding position of the rail weld.

[0022] In the embodiment of the present utility model:

[0023] On the one hand, the alignment is accurate. Through the cooperative action of the vertical guiding part and the telescopic device, when the telescopic device and the welding machine head move above the target position, they will quickly stabilize in the vertically downward state. Furthermore, during the lowering process of the welding machine head, it always maintains a stable state with only vertical displacement, ultimately ensuring the accurate alignment of the welding machine head with the rail weld.

[0024] On the other hand, the operation is simple. The lowering of the welding machine head only needs to be carried out under the control of the telescopic device, without the need to start the telescopic rotation mechanism or the rotating base. The operation is simple and the alignment is accurate.

[0025] As Figure 2 and Figure 3 shown, according to another embodiment of the present utility model, there are two telescopic rotation mechanisms, and the two telescopic rotation mechanisms are symmetrically arranged on both sides of the rotating base; the vertical guiding part includes a mounting frame 110, the mounting frame 110 is arranged between the two ends of the two telescopic rotation mechanisms far from the rotating base, and both ends of the mounting frame 110 are respectively rotatably connected to the corresponding telescopic rotation mechanisms. One end of the telescopic device far from its telescopic shaft penetrates into the accommodating cavity 120 enclosed by the mounting frame 110 and is rotatably connected to the other two ends of the mounting frame 110.

[0026] Specifically, the two telescopic rotation mechanisms, the rotating base, and the mounting frame 110 jointly enclose a frame with variable orientation, height, and length. The two telescopic rotation mechanisms enable the frame to rotate around one side of the frame corresponding to the rotating base, mainly changing the height of the frame, and at the same time enabling the two sides of the frame along its length direction to extend or contract simultaneously, thereby changing the length of the frame. Furthermore, the height of the mounting frame 110 on the other side of the frame from the target position and the distance in the horizontal direction can be adjusted. Finally, the position of the telescopic device and the suspended welding machine head can be adjusted to move the welding machine head above the rail weld. The mounting frame 110 is preferably a rectangular frame, and the mounting frame 110 is rotatably arranged along its length direction between the two ends of the two telescopic rotation mechanisms, so that the mounting frame 110 can rotate around its own long axis (for convenience of description, as Figures 1 - 4 , the rotation direction of the mounting frame 110 is specified as left and right); more preferably, the mounting frame 110 forms a rectangular accommodating cavity 120, so that the upper end of the telescopic device is rotationally limited in the accommodating cavity 120; further preferably, the size and arrangement method of the mounting frame 110 should meet the following conditions: when the mounting frame 110 is in a stable state, the plane where it is located is perpendicular to the telescopic device arranged in the vertical direction, and the width of the rectangular accommodating cavity 120 enclosed by the mounting frame 110 is as close as possible to the width at the corresponding position of the telescopic device. At this time, the self-rotation direction of the telescopic device is perpendicular to the rotation direction of the mounting frame 110, and the telescopic device can only rotate in the length direction of the accommodating cavity 120 (for convenience of description, as Figures 1 - 4, the rotation direction of the expander is specified as front and back).

[0027] In the embodiment of the present utility model, the design of the two telescopic rotation mechanisms and the frame body makes the structure stable, the adjustment accurate and convenient; the rotational connection between the mounting frame 110 and the telescopic rotation mechanism and the rotational connection between the expander and the mounting frame 110 enable the mounting frame 110 and the expander to rotate under the action of gravity without external energy; the design of the rectangular frame of the mounting frame 110 and the width of the rectangular frame being as close as possible to the width of the expander ensures that the self-rotation direction of the expander is perpendicular to the rotation direction of the mounting frame 110. Thus, under the action of gravity, the mounting frame 110 adjusts to its horizontal position by rotating left and right, and at the same time, while the mounting frame 110 drives the expander to rotate left and right, it also controls the self-rotation of the expander in the front and back directions, so that the expander can adjust to its stable position in the front and back directions by swinging back and forth while following the mounting frame 110 to be stable in the left and right directions, that is, the expander can finally be in a stable state with the welding machine head hanging vertically downward, and at this time, the welding machine head being hoisted can be stable above the rail weld.

[0028] As Figures 1 - 4 shown, according to another embodiment of the present utility model, both ends of the mounting frame 110 are respectively rotationally connected to the corresponding telescopic rotation mechanism through a rotating member 130, the rotating member 130 includes a rotating pin 131, one end of the rotating pin 131 is fixedly connected to the corresponding end of the mounting frame 110 and the other end thereof is rotationally connected to the corresponding telescopic rotation mechanism. Specifically, the rotating pin 131 is preferably a round rod-shaped rotating shaft, and a rotating shaft end cover (as Figure 3 and Figure 4 , the rotating shaft end cover on one side is not shown) is sleeved on the part of the round rod-shaped rotating shaft extending into the receiving cavity 120, and the rotating pin 131 is rotationally connected to the corresponding telescopic rotation mechanism through an L-shaped connecting part 500 (as Figures 1 - 4 ), wherein a through hole is opened at the upward extending end of the L-shaped connecting part 500, and a bearing can be installed in the through hole to support the rotation of the rotating pin 131 in the through hole. The L-shaped connecting part 500 further compresses the space for arranging the mounting frame 110 between the two telescopic rotation mechanisms, making the structure compact and stable.

[0029] Further, one end of the expander away from its expansion shaft is rotatably connected to the mounting frame 110 through a mounting limit seat. There are two mounting limit seats, and each mounting limit seat includes a bearing seat 141 and a hinge shaft (not shown in the figure); the bearing seat 141 protrudes above one end of the corresponding mounting frame 110 and is arranged along the length direction of the mounting frame 110. In particular, when the mounting frame 110 is a rectangular frame, the two bearing seats 141 are respectively arranged above the two sides of the mounting frame 110 along its length direction; a bearing mounting through hole 142 is provided on the bearing seat 141; one end of the hinge shaft is connected to the side surface of the corresponding expander, and the other end of the hinge shaft rotates in the bearing mounting through hole 142. Note that the distance between the two bearing seats 141 is preferably the same as the width of the corresponding position of the expander to ensure that the expander rotates along the length direction of each bearing between the two bearings. Preferably, the distance between the bearing seats 141 is adjustable to adapt to expanders of different sizes, and it is also convenient for the installation and disassembly of the expander.

[0030] Based on the above solution, the vertical guiding portion further includes a rotating baffle 150. There are two rotating baffles 150, and the two rotating baffles 150 are symmetrically arranged on the mounting frame 110. The two bearing seats 141 are located between the two rotating baffles 150 and enclose an active limiting space 160 for the expander to swing between the two rotating baffles 150. Under the condition that the above mounting frame 110 is a rectangular frame, the cross-section of the active limiting space 160 is also rectangular. At this time, the swing of the expander along the length direction of the mounting frame 110 is further limited within the active limiting space 160, thereby further limiting the swing amplitude of the expander and enabling it to be quickly adjusted to be arranged vertically.

[0031] As Figures 1 - 4 shown, according to another embodiment of the present invention, the expander includes a lifting oil cylinder 210 and a hanging portion 220. One end of the lifting oil cylinder 210 away from its piston rod penetrates into the accommodating cavity 120 and is rotatably connected to both ends of the mounting frame 110. The hanging portion 220 is arranged at the bottom end of the piston rod of the lifting oil cylinder 210 and is connected to the head of the rail flash welder during use.

[0032] Further, the rotating base includes a slewing bearing 410, a turntable 420, a speed reducer assembly, and an oil circuit integration block 440; the bottom end of the slewing bearing 410 is rotatably connected to the container bottom plate 600. Preferably, the slewing bearing 410 is rotatably connected to the upper end of a welded bottom plate 450, and the bottom end of the welded bottom plate 450 is welded to the container bottom plate 600; an external gear ring 411 is sleeved outside the slewing bearing 410; the speed reducer assembly is attached to the upper and lower sides of the container bottom plate 600. Preferably, the speed reducer assembly is arranged on the side away from the telescopic rotating mechanism; the speed reducer assembly includes a rotating driver, a reduction gear 433 meshing with the external gear ring 411, and a speed reducer 432 connected between the rotating driver and the reduction gear 433; specifically, the rotating driver can be a hydraulic motor 431, which is attached to the lower side of the container bottom plate 600. The output shaft of the hydraulic motor 431 is connected to the input shaft of the speed reducer 432. The other parts of the speed reducer 432 except its output shaft are also attached to the lower side of the container bottom plate 600. One end of the output shaft of the speed reducer 432 passes through the container bottom plate 600 into the container and is connected to the gear shaft of the reduction gear 433, and the reduction gear 433 meshes with the external gear ring 411 to drive the slewing bearing 410 to rotate; the oil circuit integration block 440 is arranged on one side of the turntable 420 and is connected to the lifting oil cylinder 210 through an oil circuit pipeline. Preferably, the oil circuit integration block 440 is arranged close to the speed reducer assembly, and its oil circuit pipeline can also be connected to the hydraulic motor 431; the turntable 420 is fixedly connected to the upper end of the slewing bearing 410. Specifically, the turntable 420 is equivalent to a housing covering the upper end of the slewing bearing 410 and rotating with the slewing bearing 410, and two telescopic rotating mechanisms are symmetrically arranged on both sides of the upper end of the housing. Thus, the speed reducer assembly and the oil circuit integration block 440 can occupy as little space in the container and on the hanger as possible.

[0033] Still further, two mutually parallel limiting grooves 421 are symmetrically opened in the front of both sides of the upper end of the turntable 420. Preferably, there are sloping platforms on both sides of the upper end of the turntable 420, and sealing plates are erected on both sides of the sloping platforms to form a heightened limiting groove 421; each telescopic rotating mechanism includes a rotating unit and a telescopic unit; the rotating unit includes a rotating arm 310 and a rotating arm oil cylinder 320. One end of the rotating arm 310 is hinged to the distal end of the corresponding limiting groove 421 (here, the right side of the limiting groove 421 is defined as the distal end, and the right side refers to the designation of the left and right directions above; as Figure 2 and Figure 3 , the distal end refers to the lower end of the sloping platform), and the end of the rotating arm oil cylinder 320 away from its piston rod is hinged to the proximal end of the corresponding limiting groove 421 (here, the left side of the limiting groove 421 is defined as the proximal end, and the left side refers to the designation of the left and right directions above; as Figure 2 and Figure 3, the proximal end (i.e., the upper end of the slope-shaped platform) is hinged and connected, and the other end of the swing arm oil cylinder 320 is hinged and connected to the side wall of the other end of the swing arm 310; the telescopic unit includes a telescopic arm 330 and a telescopic arm oil cylinder 340. One end of the telescopic arm 330 is slidably connected to the end of the swing arm 310 away from the limit groove 421 along the axial direction of the swing arm 310. The other side of one end of the telescopic arm 330 is hinged to the piston rod of the telescopic arm oil cylinder 340, and the other side is rotatably connected to one end of the corresponding mounting frame 110. Under the condition of the foregoing L-shaped connecting portion 500 and the rotating pin 131, here, one end of the rotating pin 131 is rotatably connected to the corresponding telescopic arm 330 through the L-shaped connecting portion 500; the end of the telescopic arm oil cylinder 340 away from its piston rod is hinged to one side of the swing arm 310, and the telescopic direction of the piston rod of the telescopic arm oil cylinder 340 is the same as the sliding direction of the telescopic arm 330; wherein, both the swing arm oil cylinder 320 and the telescopic arm oil cylinder 340 are connected to the oil pipeline of the oil circuit integration block 440. Thus, the telescopic movement of the swing arm oil cylinder 320 can mainly raise or lower the swing arm 310, so as to lift or lower the welded machine head being hoisted. The telescopic movement of the telescopic arm oil cylinder 340 can further change the distance of the welded machine head from the target position in the horizontal direction, so as to finally move the welded machine head above the rail weld; and the swing arm oil cylinder 320 is arranged at the front end of the rotary table 420, which reduces the requirement for the length of the swing arm oil cylinder 320 and further saves the installation space. Additionally, preferably, this embodiment is a further optimization based on the foregoing embodiments.

[0034] In the use of this embodiment:

[0035] After the mobile rail flash welding machine reaches the appropriate position at the construction site, first open the container, and then hang the welding machine head at the bottom end of the piston rod of the lifting oil cylinder 210; then start the slewing bearing 410 to drive the rotary table 420 to rotate to adjust the orientation of the telescopic and rotating mechanism until the lifting oil cylinder 210 and the welding machine head are in the corresponding orientation of the target position (i.e., the rail weld), and then close the slewing bearing 410; then start the swing arm oil cylinder 320 and the telescopic arm oil cylinder 340. The swing arm oil cylinder 320 mainly drives the lifting oil cylinder 210 and the welding machine head to rise or fall by changing the angle between the swing arm 310 and the horizontal plane, and can also adjust to a certain extent the distance between the lifting oil cylinder 210 and the welding machine head and the rail weld in the horizontal direction, and the distance is mainly adjusted by the telescopic arm oil cylinder 340; when the welding machine head is moved above the rail weld, close the swing arm oil cylinder 320 and the telescopic arm oil cylinder 340; at this time, the mounting frame 110 is in a left-right swinging state, and the lifting oil cylinder 210 is rotating slightly in the front-back direction within the movable limit space 160 while following the left-right swing of the mounting frame 110. In addition, the welding machine head is also in an unstable swinging state; due to the large gravity of the welding machine head and the gravity direction always being downward, on the one hand, when the mounting frame 110 swings left and right until its central axis is the same as the gravity direction of the welding machine head (at this time the mounting frame 110 is in the horizontal direction), it stops or quickly stops swinging, so the left-right swing of the lifting oil cylinder 210 also quickly stops, and at the same time the front-back rotation of the lifting oil cylinder 210 also quickly stops under the action of the rotating baffle 150 (at this time the lifting oil cylinder 210 is in the vertical direction), and then the welding machine head is stabilized above the rail weld; then start the lifting oil cylinder 210 to lower the welding machine head. During the lowering process, the welding machine head maintains a stable state with only vertical displacement due to its large self-gravity. When the welding machine head reaches the corresponding position of the rail weld, the lifting oil cylinder 210 can be closed. At this time, the alignment of the welding machine head and the rail weld is accurate.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A lifting hanger for a rail flash welder, comprising a telescopic rotating mechanism and a rotating base, wherein the telescopic rotating mechanism is encapsulated in a container of the rail flash welder and one end of the telescopic rotating mechanism is connected to the upper end of the rotating base, and the lower end of the rotating base is arranged on the bottom plate (600) of the container; characterized in that: Also includes: An expander, the expander is arranged in a vertical direction and its expansion shaft is connected to the head of the rail flash welder in a hanging manner when in use; A vertical guide portion is connected between the telescopic device and the telescopic rotating mechanism, and is used to keep the central axis of the telescopic device perpendicular to the ground.

2. A lifting bracket for a rail flash welding machine as claimed in claim 1, characterized in that: There are two telescopic rotating mechanisms, and the two telescopic rotating mechanisms are symmetrically arranged on both sides of the rotating base; the vertical guide part includes: A mounting frame (110), the mounting frame (110) being arranged between two ends of the two telescopic rotating mechanisms away from the rotating base, and the two ends of the mounting frame (110) are respectively rotatably connected to the corresponding telescopic rotating mechanisms, and one end of the telescope away from its telescopic axis penetrates into the accommodating cavity (120) enclosed by the mounting frame (110) and is rotatably connected to the other two ends of the mounting frame (110).

3. A lifting bracket for a rail flash welding machine as claimed in claim 2, characterized in that: Both ends of the mounting frame (110) are rotatably connected to corresponding telescopic rotating mechanisms via rotating members (130), and the rotating members (130) include: A rotating pin (131), one end of which is fixedly connected to the end of the corresponding mounting frame (110) and the other end of which is rotationally connected to the corresponding telescopic rotating mechanism.

4. A lifting bracket for a rail flash welding machine as claimed in claim 2, characterized in that: One end of the telescopic device away from the telescopic axis is rotatably connected to the mounting frame (110) via a mounting limit seat, and there are two mounting limit seats, each of which comprises: A bearing seat (141), the bearing seat (141) is protruding above one end of the corresponding mounting frame (110) and arranged along the length direction of the mounting frame (110), and a bearing mounting through hole (142) is opened on the bearing seat (141); A hinge shaft, one end of which is connected to the side surface of the corresponding expansion joint and the other end of which is rotated in the bearing installation through hole (142).

5. A lifting bracket for a rail flash welding machine as claimed in claim 4, characterized in that: The vertical guide portion further comprises: There are two rotating baffles (150), and the two rotating baffles (150) are symmetrically arranged on the mounting frame (110); two bearing seats (141) are located between the two rotating baffles (150) and are used to enclose a movable limiting space (160) for the telescopic device to swing along between the two rotating baffles (150).

6. A lifting bracket for a rail flash welding machine as claimed in claim 2, characterized in that: The retractor comprises: A lifting cylinder (210), wherein one end of the lifting cylinder (210) away from its piston rod penetrates into the accommodating cavity (120) and is rotatably connected to both ends of the mounting frame (110); A hanging part (220) is arranged at the bottom end of the piston rod of the lifting cylinder (210) and is connected to the head of the rail flash welding machine when in use.

7. A lifting bracket for a rail flash welding machine as claimed in claim 6, characterized in that: The rotating base comprises: A slewing bearing (410), wherein the bottom end of the slewing bearing (410) is rotatably connected to the container bottom plate (600), and an outer gear ring (411) is sleeved on the outer side of the slewing bearing (410); A rotating table (420), wherein the rotating table (420) is fixedly connected to the upper end of the rotating support (410), and two telescopic rotating mechanisms are symmetrically arranged on both sides of the upper end of the rotating table (420); A reducer assembly, the reducer assembly being attached to the upper and lower sides of the container bottom plate (600), the reducer assembly comprising a rotary driver, a reduction gear (433) meshing with the outer gear ring (411), and a reducer (432) connected between the rotary driver and the reduction gear (433); An oil circuit integrated block (440) is arranged on one side of the turntable (420) and is connected to the lifting cylinder (210) via an oil circuit pipeline.

8. A lifting bracket for a rail flash welding machine as claimed in claim 7, characterized in that: Two mutually parallel limiting grooves (421) are symmetrically arranged in front of both sides of the upper end of the rotating table (420); each telescopic rotating mechanism comprises: A rotating unit, the rotating unit comprising a rotating arm (310) and a rotating arm oil cylinder (320), one end of the rotating arm (310) being hingedly connected to the distal end of a corresponding limiting groove (421), one end of the rotating arm oil cylinder (320) being away from its piston rod being hingedly connected to the proximal end of the corresponding limiting groove (421), and the other end of the rotating arm oil cylinder (320) being hingedly connected to the side wall of the other end of the rotating arm (310); A telescopic unit, the telescopic unit comprising a telescopic arm (330) and a telescopic arm cylinder (340), one end of the telescopic arm (330) being slidably connected to an end of the rotating arm (310) away from the limiting groove (421) along the axial direction of the rotating arm (310), one side of the other end of the telescopic arm (330) being hingedly connected to the piston rod of the telescopic arm cylinder (340) and the other side being rotatably connected to an end of a corresponding mounting frame (110), the end of the telescopic arm cylinder (340) away from its piston rod being hingedly connected to one side of the rotating arm (310), and the telescopic direction of the piston rod of the telescopic arm cylinder (340) being consistent with the sliding direction of the telescopic arm (330); The arm rotating cylinder (320) and the telescopic arm cylinder (340) are both connected to the oil pipeline of the oil pipeline integrated block (440).

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