CN113910138A - Installation positioning device of bogie safety hanging seat - Google Patents
Installation positioning device of bogie safety hanging seat Download PDFInfo
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- CN113910138A CN113910138A CN202111391810.0A CN202111391810A CN113910138A CN 113910138 A CN113910138 A CN 113910138A CN 202111391810 A CN202111391810 A CN 202111391810A CN 113910138 A CN113910138 A CN 113910138A
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- positioning
- seat
- bogie
- mounting
- safety
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a mounting and positioning device of a bogie safety hanging seat, which comprises an outrigger, at least two positioning and supporting components for supporting the outrigger and at least one sliding and locking component arranged on the outrigger; the positioning support assembly can be assembled on a bogie frame, and the safety hanging seat is detachably arranged on the sliding locking assembly; the cantilever beam can be transversely adjusted relative to the positioning support assembly, and the height of the positioning support assembly can be adjusted. The mounting and positioning device for the safe lifting seat of the bogie can mount and position the safe lifting seat, improve the positioning and assembling precision between the safe lifting seat and the bogie frame, reduce the maintenance cost and reduce the labor intensity.
Description
Technical Field
The invention relates to the field of bogies, in particular to a mounting and positioning device for a bogie safety hanging seat.
Background
At present, in the overhaul production of the bogie of the passenger car, after a safe lifting seat is damaged, a repairing mode of welding a new safe lifting lug seat on the bogie again is generally adopted. However, due to the special structure of the passenger car bogie, when no special auxiliary tool or fixing device is available, the method of measuring the size by using a measuring tape, positioning the measuring tape on the surface of the safety lug seat flatly, fixing the safety lug seat by hand and directly welding is time-consuming and labor-consuming in operation and inconvenient. Linear determination is adopted during detection and positioning, single angle deflection is often obtained on a bogie, geometric position errors exist, and two pairs of safety lug seats in the shape of a parallelogram often need to be reworked, ground again, aligned and welded; when the safety lifting lug seat without errors is detected to flow into the next process, the installation of accessories in the next process is difficult or impossible, the installation needs to return to the previous process, the loss of manpower and material resources is caused, and the production progress is influenced.
Meanwhile, because the vehicle which leaves the factory is installed under the influence of external force, after section inspection, disassembly and repair and when restoration are carried out, a salesman is required to attend to the section for treatment because the safety hanging seat and the safety hanging protection plate are installed in a staggered manner; even the safety hidden trouble that the safety lifting protection plate or the safety lifting lug is damaged and broken to fall off due to deformation stress and fatigue in the running process of the train occurs, and the safety protection effect cannot be achieved.
Therefore, how to improve the positioning accuracy of the safety hanging seat of the bogie is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide an installation positioning device of a bogie safety lifting seat, which can effectively improve the positioning precision of the safety lifting seat and ensure the maintenance quality.
In order to achieve the purpose, the invention provides the following technical scheme:
a mounting and positioning device for a bogie safety hanging seat comprises an outrigger, at least two positioning and supporting assemblies for supporting the outrigger and at least one sliding and locking assembly mounted on the outrigger; the positioning support assembly can be assembled on a bogie frame, and the safety hanging seat is detachably arranged on the sliding locking assembly; the cantilever beam can be transversely adjusted relative to the positioning support assembly, and the height of the positioning support assembly can be adjusted.
Preferably, the positioning support assembly comprises a positioning seat, a support rod and a support cylinder; the positioning seat is detachably arranged on the bogie frame, the supporting rod is positioned between the positioning seat and the supporting barrel, and the height between the supporting rod and the positioning seat is adjustable; the supporting cylinder is used for supporting the cantilever beam.
Preferably, an adjusting locking nut is arranged between the supporting rod and the positioning seat, an external thread matched with the adjusting locking nut is arranged on the supporting rod, and the height of the supporting rod can be adjusted when the adjusting locking nut rotates; the adjusting locking nut can be fastened on the positioning seat.
Preferably, the top of the supporting cylinder is provided with a guide seat, the cantilever beam can be placed in the guide seat, and two ends of the guide seat are communicated for the transverse movement of the cantilever beam; and the guide seat is also provided with an outrigger fastener for fixing the outrigger.
Preferably, the cantilever beam is provided with a plurality of positioning blocks for positioning the sliding locking assembly, and the positioning blocks are detachably and fixedly arranged on the cantilever beam.
Preferably, the cantilever beam, the positioning support assembly and the sliding locking assembly are all aluminum alloy pieces.
Preferably, the sliding locking assembly comprises a sliding sleeve, a positioning plate and a movable sliding plate, and the safety hanging seat is detachably mounted on the movable sliding plate; the sliding sleeve is sleeved on the cantilever beam, the positioning plate is fixedly connected with the sliding sleeve, and the movable sliding plate is slidably connected with the positioning plate and can be fastened with the positioning plate at a target position.
Preferably, the positioning plate is provided with a chute, the movable sliding plate is provided with at least two pin shafts, the pin shafts can slide in the chute, and the safety hanging seat is provided with an assembling hole matched with the pin shafts; the pin shaft comprises a positioning pin shaft and at least one chamfered edge pin shaft.
Preferably, an elastic part is arranged in a sliding groove of the positioning plate, the elastic part is abutted to the pin shaft and applies downward acting force to the pin shaft, so that the safety hanging seat is abutted to the bogie frame.
Preferably, the bogie further comprises a transition positioning sleeve capable of being assembled between the positioning seat and the bogie frame, one end of the transition positioning sleeve is in threaded connection with the bottom of the positioning seat, the other end of the transition positioning sleeve is provided with a boss, and the boss can be connected with a mounting hole of the bogie frame.
The invention provides a mounting and positioning device of a bogie safety hanging seat, which comprises an outrigger, at least two positioning and supporting components for supporting the outrigger and at least one sliding and locking component arranged on the outrigger; the positioning support assembly can be assembled on a bogie frame, and the safety hanging seat is detachably arranged on the sliding locking assembly; the cantilever beam can be transversely adjusted relative to the positioning support assembly, and the height of the positioning support assembly can be adjusted. The mounting and positioning device for the safe lifting seat of the bogie can mount and position the safe lifting seat, improve the positioning and assembling precision between the safe lifting seat and the bogie frame, reduce the maintenance cost and reduce the labor intensity.
In a preferred embodiment, a chute is arranged on the positioning plate, at least two pin shafts are arranged on the movable sliding plate, the pin shafts can slide in the chute, and an assembling hole matched with the pin shafts is arranged on the safety hanging seat; the pin shaft comprises a positioning pin shaft and at least one chamfered edge pin shaft. According to the arrangement, the positioning pin shaft can be utilized to realize positioning by utilizing the arrangement of the positioning pin shaft and the chamfered edge pin shaft, and the over-positioning is eliminated through the chamfered edge pin shaft, so that the safety hanging seat is convenient to assemble and disassemble and convenient to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of an embodiment of a mounting and positioning device for a safety hanger of a bogie according to the present invention;
FIG. 2 is an enlarged schematic view of a positioning support assembly of the mounting and positioning device of the bogie safety hanger shown in FIG. 1;
FIG. 3 is an enlarged schematic view of a slide lock assembly of the mounting and positioning device of the truck safety hanger of FIG. 1;
FIG. 4 is a top view of an embodiment of a mounting and positioning device for a safety hanger of a bogie according to the present invention;
FIG. 5 is an enlarged schematic view of a positioning seat of the mounting and positioning device of the bogie safety hanger shown in FIG. 4;
FIG. 6 is a front cross-sectional view of a transition positioning sleeve in the mounting and positioning device of the bogie safety hanger provided by the invention;
FIG. 7 is a top view of a transition positioning sleeve in the mounting and positioning device of the bogie safety hanger provided by the invention;
wherein: positioning the support assembly-100; a positioning seat-101; a support rod-102; a support cylinder-103; a guide seat-104; adjusting a locking nut-105; cantilever beam-200; a positioning block-201; outrigger fasteners-202; a slide and lock assembly-300; sliding sleeve-301; positioning plate-302; a movable skateboard-303; sled fastener-304; a chamfered edge pin shaft-305; positioning a pin shaft-306; a safety hanging seat-400; bogie frame-500; a guide post seat-501; a transition positioning sleeve-600.
Detailed Description
The core of the invention is to provide the installation and positioning device of the safe lifting seat of the bogie, which has convenient operation, adjustability and high positioning precision.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, fig. 1 is a front view of an embodiment of a mounting and positioning device for a safety suspension seat of a bogie according to the present invention; FIG. 2 is an enlarged schematic view of a positioning support assembly of the mounting and positioning device of the bogie safety hanger shown in FIG. 1; FIG. 3 is an enlarged schematic view of a slide lock assembly of the mounting and positioning device of the truck safety hanger of FIG. 1; FIG. 4 is a top view of an embodiment of a mounting and positioning device for a safety hanger of a bogie according to the present invention; FIG. 5 is an enlarged schematic view of a positioning seat of the mounting and positioning device of the bogie safety hanger shown in FIG. 4;
FIG. 6 is a front cross-sectional view of a transition positioning sleeve in the mounting and positioning device of the bogie safety hanger provided by the invention; fig. 7 is a top view of a transition positioning sleeve in the mounting and positioning device of the bogie safety suspension seat provided by the invention.
In this embodiment, the mounting and positioning device of the bogie safety hanger 400 includes an outrigger 200, at least two positioning support assemblies 100 for supporting the outrigger 200, and at least one slide lock assembly 300 mounted on the outrigger 200.
Wherein, the positioning support assembly 100 can be assembled on the bogie frame 500, preferably two positioning support assemblies 100 are arranged at two ends of the outrigger 200 respectively, and the safety hanging seat 400 is detachably mounted on the sliding locking assembly 300; the outrigger 200 is laterally adjustable relative to the position support assembly 100 and the height of the position support assembly 100 is adjustable.
The installation and positioning device for the bogie safety lifting seat 400 provided by the invention can realize installation and positioning of the safety lifting seat 400, improve the positioning and assembling precision between the safety lifting seat 400 and the bogie frame 500, reduce the maintenance cost and reduce the labor intensity.
On the basis of the above embodiments, the positioning support assembly 100 includes the positioning seat 101, the support rod 102 and the support cylinder 103; specifically, the positioning seat 101 is detachably mounted on the bogie frame 500, the positioning seat 101 is preferably a butterfly-shaped base, the butterfly-shaped base is provided with four corners, and the boundary is provided with waist-shaped assembling holes, so that the positioning seat is conveniently connected with the guide pillar seat 501 of the bogie frame 500. The supporting rod 102 is positioned between the positioning seat 101 and the supporting cylinder 103, and the height between the supporting rod 102 and the positioning seat 101 is adjustable; the support cylinder 103 is used to support the cantilever 200. The supporting rod 102 and the supporting cylinder 103 form a structure which is the same as a wine glass, so that the weight of the device can be effectively reduced.
Specifically, an adjusting locking nut 105 is arranged between the supporting rod 102 and the positioning seat 101, an external thread matched with the adjusting locking nut 105 is arranged on the supporting rod 102, and when the adjusting locking nut 105 rotates, the height of the supporting rod 102 can be adjusted; the adjusting lock nut 105 can be fastened to the positioning socket 101. Specifically, as shown in fig. 2, a step is provided inside the adjusting lock nut 105, one side of the step is engaged with the support rod 102, and the connecting position between the adjusting lock nut 105 and the support rod 102 can be changed by rotating the adjusting lock nut 105; the other side of the step is also provided with internal threads and is connected with the positioning seat 101, and after the matching position of the step and the supporting rod 102 is adjusted, the adjusting locking nut 105 is screwed down to fasten the step on the positioning seat 101, so that the purposes of adjusting the height and locking are achieved.
On the basis of the above embodiments, the top of the support cylinder 103 is provided with the guide seat 104, the cantilever beam 200 can be placed in the guide seat 104, and two ends of the guide seat 104 are communicated for the transverse movement of the cantilever beam 200; the guide base 104 is further provided with an outrigger fastener 202 for fixing the outrigger 200. Specifically, as shown in fig. 5, the guide seat 104 is U-shaped, that is, the guide seat 104 is formed by two plate bodies located at the top of the support cylinder 103; the guide seat 104 is further provided with an outrigger fastener 202, and the outrigger fastener 202 is preferably a bolt, and can clamp the outrigger 200 in the guide seat 104 to fix the outrigger 200.
On the basis of the above embodiments, the outrigger 200 is provided with a plurality of positioning blocks 201 for positioning the sliding lock assembly 300, and the positioning blocks 201 are detachably and fixedly arranged on the outrigger 200.
In addition to the above embodiments, the outriggers 200, the positioning support assemblies 100, and the sliding lock assemblies 300 are all made of aluminum alloy, but may be made of other lightweight materials, and the lightweight materials, the hollow structure, and the appearance weight reduction structure are used to reduce the weight and the labor intensity.
On the basis of the above embodiments, the slide locking assembly 300 includes the sliding sleeve 301, the positioning plate 302 and the movable sliding plate 303, and the safety hanging seat 400 is detachably mounted on the movable sliding plate 303; the sliding sleeve 301 is sleeved on the cantilever beam 200, and the sliding sleeve 301 and the cantilever beam 200 can be fastened through butterfly screws; the positioning plate 302 is fixedly connected with the sliding sleeve 301, the positioning plate 302 is located at the bottom of the sliding sleeve 301, the positioning plate 302 and the sliding sleeve 301 can be of an integral structure, and the movable sliding plate 303 is slidably connected with the positioning plate 302 and can be fastened with the positioning plate 302 at a target position. Specifically, the movable sliding plate 303 is provided with a sliding plate fastener 304, and the sliding plate fastener 304 is preferably a butterfly screw capable of fastening the movable sliding plate 303 to the positioning plate 302. The sliding sleeve 301 can be clamped with the positioning block 201 to realize the positioning in the horizontal direction. Specifically, the spatial position of the safety hanger 400, i.e., the mounting position of the positioning block 201, can be determined using the spring guide post positioning plane and the center hole of the truck frame 500 as the reference of the device.
On the basis of the above embodiments, the positioning plate 302 is provided with a chute, the movable sliding plate 303 is provided with at least two pin shafts, and the pin shafts can slide in the chute, that is, the pin shafts can move under the driving of the movable sliding plate 303; the safety hanging seat 400 is provided with an assembly hole matched with a pin shaft, and the pin shaft comprises a positioning pin shaft 306 and at least one chamfered edge pin shaft 305; the number of the pins is preferably two, the pins are arranged along the longitudinal direction, the lower pins are preferably positioning pins 306, and the upper pins are preferably chamfered pins 305; the size of the cross section of the positioning pin 306, namely the cylindrical pin, is consistent with the size of the assembling hole of the safety hanging seat 400; the size of the cross section of the chamfered pin shaft 305 is smaller than the size of the assembly hole of the safety hanging seat 400; the cooperation of the positioning pin 306 and the chamfered edge pin 305 can prevent the safety hanging seat 400 from being over-positioned during welding of the safety hanging seat 400, so that the safety hanging seat 400 cannot be separated from the pin. In the arrangement, the positioning pin shaft 306 can be used for realizing positioning by utilizing the positioning pin shaft 306 and the chamfered edge pin shaft 305, and the over-positioning is eliminated by the chamfered edge pin shaft 305, so that the safety hanging seat 400 is convenient to assemble and disassemble and convenient to operate.
In addition to the above embodiments, an elastic member is provided in the slide groove of the positioning plate 302, and the elastic member abuts against the pin shaft and applies a downward urging force to the pin shaft so that the safety hanger 400 abuts against the bogie frame 500.
On the basis of the above embodiments, the positioning device further comprises a transition positioning sleeve 600 capable of being assembled between the positioning seat 101 and the bogie frame 500, wherein one end of the transition positioning sleeve 600 is in threaded connection with the bottom of the positioning seat 101, and the other end of the transition positioning sleeve 600 is provided with a boss capable of being connected with a mounting hole of the bogie frame 500. It should be noted that the transitional positioning sleeve 600 is used for realizing center positioning of two vehicle types, the positioning seat 101 may be directly connected to the bogie frame 500 provided with the guide post seat 501, and the positioning seat 101 is connected to the bogie frame 500 via the transitional positioning sleeve 600 for the bogie frame 500 not provided with the guide post seat 501.
According to the device, the center positioning of two vehicle types can be realized by installing the transitional positioning sleeve 600 in the hole at the bottom of the positioning seat 101 according to different vehicle types in the assembling and welding process; the determination of the position of the safety lifting seat 400 of another vehicle type is realized through the transverse movement between the guide seat 104 and the sliding key at the end part of the cantilever beam 200; for two kinds of height safety hanging seats 400, the up-and-down movement of the sliding locking assembly 300 can be completed through the movable sliding plate 303; finally, the safety hanging seat 400 is fixed by attaching the plane of the positioning plate 302 of the sliding locking assembly 300 to the safety hanging seat 400, guiding and positioning the chamfered pin 305 of the movable sliding plate 303 and locking the sliding plate fastener 304, and then the safety hanging seat 400 and the bogie frame 500 are assembled and welded.
The device is convenient to operate and adjustable, meets the requirements of multifunctional positioning and welding processes of different types of bogie safety lifting seats 400, and realizes accurate positioning of the spatial positions of the sizes and angles of the safety lifting seats 400 and the bogie frames 500, thereby ensuring the maintenance quality.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The installation and positioning device for the bogie safety lifting seat provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The mounting and positioning device for the safe hanging seat of the bogie is characterized by comprising an outrigger (200), at least two positioning and supporting assemblies (100) for supporting the outrigger (200) and at least one sliding and locking assembly (300) mounted on the outrigger (200); the positioning support assembly (100) can be assembled on a bogie frame (500), and the safety hanging seat (400) is detachably arranged on the sliding locking assembly (300); the cantilever beam (200) can be transversely adjusted relative to the positioning support assembly (100), and the height of the positioning support assembly (100) can be adjusted.
2. The mounting and positioning device for the bogie safety hanger according to claim 1, wherein the positioning and supporting assembly (100) comprises a positioning seat (101), a supporting rod (102) and a supporting barrel (103); the positioning seat (101) is detachably mounted on the bogie frame (500), the supporting rod (102) is positioned between the positioning seat (101) and the supporting barrel (103), and the height between the supporting rod (102) and the positioning seat (101) is adjustable; the supporting cylinder (103) is used for supporting the cantilever beam (200).
3. The mounting and positioning device for the safety hanging seat of the bogie as recited in claim 2, characterized in that an adjusting lock nut (105) is arranged between the support rod (102) and the positioning seat (101), an external thread matched with the adjusting lock nut (105) is arranged on the support rod (102), and when the adjusting lock nut (105) rotates, the height of the support rod (102) can be adjusted; the adjusting and locking nut (105) can be fastened on the positioning seat (101).
4. The mounting and positioning device for the safety hanging seat of the bogie as recited in claim 2, characterized in that a guide seat (104) is arranged at the top of the supporting cylinder (103), the cantilever beam (200) can be placed in the guide seat (104), and two ends of the guide seat (104) are conducted for the transverse movement of the cantilever beam (200); and the guide seat (104) is also provided with an outrigger fastener (202) for fixing the outrigger (200).
5. The mounting and positioning device for the safety hanging seat of the bogie as recited in claim 1, wherein the outrigger (200) is provided with a plurality of positioning blocks (201) for positioning the sliding lock assembly (300), and the positioning blocks (201) are detachably and fixedly arranged on the outrigger (200).
6. The mounting and positioning device for the safety hanging seat of the bogie as recited in any one of claims 1 to 5, wherein the outrigger (200), the positioning and supporting assembly (100) and the sliding and locking assembly (300) are all aluminum alloy pieces.
7. The mounting and positioning device for the safety hanger of the bogie according to any one of claims 1 to 5, wherein the sliding locking assembly (300) comprises a sliding sleeve (301), a positioning plate (302) and a movable sliding plate (303), and the safety hanger (400) is detachably mounted on the movable sliding plate (303); the sliding sleeve (301) is sleeved on the cantilever beam (200), the positioning plate (302) is fixedly connected with the sliding sleeve (301), and the movable sliding plate (303) is slidably connected with the positioning plate (302) and can be fastened with the positioning plate (302) at a target position.
8. The mounting and positioning device for the safety hanging seat of the bogie according to claim 7, wherein the positioning plate (302) is provided with a sliding groove, the movable sliding plate (303) is provided with at least two pin shafts, the pin shafts can slide in the sliding groove, and the safety hanging seat (400) is provided with an assembling hole matched with the pin shafts; the pin comprises a positioning pin (306) and at least one chamfered pin (305).
9. The mounting and positioning device for the safety hanging seat of the bogie according to claim 8, wherein an elastic part is arranged in the sliding groove of the positioning plate (302), the elastic part is abutted with the pin shaft and applies downward acting force to the pin shaft so that the safety hanging seat (400) is abutted on the bogie frame (500).
10. The mounting and positioning device for the safe hanging seat of the bogie as claimed in any one of claims 1 to 5, further comprising a transitional positioning sleeve (600) capable of being assembled between the positioning seat (101) and the bogie frame (500), wherein one end of the transitional positioning sleeve (600) is in threaded connection with the bottom of the positioning seat (101), and the other end is provided with a boss capable of being connected with a mounting hole of the bogie frame (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391810.0A CN113910138A (en) | 2021-11-19 | 2021-11-19 | Installation positioning device of bogie safety hanging seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391810.0A CN113910138A (en) | 2021-11-19 | 2021-11-19 | Installation positioning device of bogie safety hanging seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113910138A true CN113910138A (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111391810.0A Pending CN113910138A (en) | 2021-11-19 | 2021-11-19 | Installation positioning device of bogie safety hanging seat |
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| Country | Link |
|---|---|
| CN (1) | CN113910138A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201645082U (en) * | 2009-12-08 | 2010-11-24 | 河南省新乡市矿山起重机有限公司 | Dual-gantry crane hydraulic welding device for box girders |
| CN208327185U (en) * | 2018-06-20 | 2019-01-04 | 协伟集成电路设备（上海）有限公司 | A kind of gallows frame for toilet |
| CN210188915U (en) * | 2019-06-24 | 2020-03-27 | 中车成都机车车辆有限公司 | Quick positioning welding device for bogie safety hanging seat |
| CN214264417U (en) * | 2020-12-29 | 2021-09-24 | 罗益机械制造(苏州)有限公司 | Sheet metal component welding position structure |
-
2021
- 2021-11-19 CN CN202111391810.0A patent/CN113910138A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201645082U (en) * | 2009-12-08 | 2010-11-24 | 河南省新乡市矿山起重机有限公司 | Dual-gantry crane hydraulic welding device for box girders |
| CN208327185U (en) * | 2018-06-20 | 2019-01-04 | 协伟集成电路设备（上海）有限公司 | A kind of gallows frame for toilet |
| CN210188915U (en) * | 2019-06-24 | 2020-03-27 | 中车成都机车车辆有限公司 | Quick positioning welding device for bogie safety hanging seat |
| CN214264417U (en) * | 2020-12-29 | 2021-09-24 | 罗益机械制造(苏州)有限公司 | Sheet metal component welding position structure |
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