A variable-span double-railway support pad device for railway crane and use method thereof

Abstract

The present invention proposes a variable-span double-railway support device for railway cranes and a method of use. By setting a cross-line beam, a hanging ear and at least two support seats, the support seat is lifted by the railway crane legs and placed on two rails of the railway line. The railway crane is supported by the support seat, and the reaction force of the railway crane legs can be effectively transmitted to the top of the rails. Since the rails themselves have a strong bearing capacity, the legs of the railway crane can obtain a relatively reliable support foundation, eliminating the safety hazard of foundation collapse and ensuring the safety of equipment and personnel. The ball joint connection between the support seat and the cross-line beam can adapt to the error caused by the different heights of the two rails of the railway line, ensuring that the cross-line beam is vertically supported on the support seat; the support seat and the cross-line beam can be rotatably connected in the horizontal plane, thereby changing the width spacing between the two support seats to meet the support requirements of the railway crane for double-rail railways with different spacings; a sliding support is set to meet the requirements of different leg spans.

Description

Technical Field

[0001] The invention relates to the field of railway cranes, and in particular to a variable-span double-railway track support pad device for railway cranes and a use method thereof. Background Art

[0002] With the continuous increase in the operating mileage of my country's railways, railway cranes, a professional rescue and construction equipment, have been widely used. When a railway crane is performing lifting operations, it is necessary to reliably support the outriggers on a solid foundation to avoid the overturning of the railway crane due to foundation collapse. However, due to various conditions at the rescue or construction site, how to find a reliable support point for the outriggers of the railway crane has always been the biggest problem in on-site operations. This not only affects the efficiency of on-site operations, but also directly affects the operational safety of the railway crane.

[0003] Therefore, developing a variable-distance double-railway support pad device for railway cranes is of great significance to improving the working efficiency of railway cranes, eliminating the safety hazard of foundation collapse, and ensuring the safety of equipment and personnel. Summary of the invention

[0004] In view of this, the present invention proposes a variable-span double-railway support device for a railway crane and a method of use, so that the legs of the railway crane can be conveniently and quickly supported above the rails of two relatively parallel railway lines with different spacings, thereby improving the working efficiency of the railway crane, eliminating the safety hazard of foundation collapse, and ensuring the safety of equipment and personnel.

[0005] The technical solution of the present invention is achieved in this way:

[0006] On the one hand, the present invention provides a variable-span double-railway support pad device for a railway crane, comprising a span beam (1), a hanging ear (2) and at least two support seats (3), wherein:

[0007] A hanging lug (2) connected to the cross-line beam (1) and used for externally connecting the railway crane outrigger;

[0008] The support seat (3) is arranged below the cross-line beam (1) and connected thereto, and has two support positions (30) arranged at its bottom, the support positions (30) being used to support on two steel rails (0) of the railway line.

[0009] On the basis of the above technical solution, preferably, the support seat (3) and the cross-line beam (1) are rotatably connected in a horizontal plane and are connected by a ball joint.

[0010] More preferably, it further comprises a center plate (4), a radial spherical bearing (5) and a fixed shaft (6), wherein:

[0011] A countersunk hole (40) is provided in the middle of the core plate (4), and the core plate (4) is fixedly arranged at the center of the support seat (3);

[0012] The radial spherical bearing (5) is arranged in the counterbore (40) and is coaxially fixed with the central disk (4);

[0013] The fixed shaft (6) is fixed to the cross-line beam (1) and to the radial spherical bearing (5).

[0014] More preferably, it also includes a thrust spherical bearing (7), wherein:

[0015] The thrust spherical bearing (7) is arranged in the countersunk hole (40) and fixed coaxially with the central disk (4). The thrust spherical bearing (7) is arranged at the bottom of the radial spherical bearing (5) and mutually abuts against it.

[0016] On the basis of the above technical solution, preferably, the cross-line beam (1) is a left-right symmetrical structure, and the two support seats (3) are symmetrically arranged at both ends of the cross-line beam (1).

[0017] On the basis of the above technical solution, preferably, it further comprises a sliding support (8), wherein:

[0018] The hanging ear (2) is fixed on the sliding support (8), and the sliding support (8) is slidably connected along the surface of the cross-line beam (1).

[0019] More preferably, it also includes two reverse hooks (9), wherein:

[0020] The cross-line beam (1) is a "wide flange type" box beam;

[0021] Two reverse hooks (9) are fixed on the sliding support (8) and hook the bottom surfaces of the flange plates on both sides of the cross-line beam (1).

[0022] More preferably, it further comprises two guide wheels (10), wherein:

[0023] The two guide wheels (10) are respectively nested on the two reverse hooks (9) and are rollingly connected to the side surfaces of the two flange plates of the cross-line beam (1).

[0024] More preferably, it also includes a slide plate (11), wherein:

[0025] One side of the slide plate (11) is fixed to the sliding support (8), and the other side is slidably connected to the upper surface of the cross-line beam (1).

[0026] Further preferably, it also includes an inner spherical pad (12), the lug (2) is arranged on the sliding support (8), the inner spherical pad (12) is fixed on the sliding support (8) and an inner spherical groove is arranged in the middle; the end of the railway crane leg is spherical, which is hingedly connected to the lug (2) and selectively rotatably connected to the inner spherical pad (12).

[0027] In a second aspect, the present invention provides a method for using the variable-span double-railway support pad device for a railway crane according to the first aspect of the present invention, comprising the following steps:

[0028] S1, hinge the railway crane legs to the hanging ears (2);

[0029] S2, opening and retracting the legs of the railway crane so that the two support positions (30) on the support seat (3) are initially aligned with the two rails (0) of the railway line;

[0030] S3, the support seat (3) is driven down by the oil cylinder on the railway crane support leg, so that the two support positions (30) on the support seat (3) are against the two steel rails (0) of the railway line.

[0031] The variable-span double-railway support pad device for railway crane and the use method of the present invention have the following beneficial effects compared with the prior art:

[0032] (1) By setting a cross-line beam, a hanging ear and at least two support seats, the railway crane is lifted by the outriggers and the support seats are placed on the two rails of the railway line. The railway crane is supported by the support seats, which can effectively transfer the reaction force of the outriggers of the railway crane to the top of the rails. Since the rails themselves have a strong bearing capacity, the outriggers of the railway crane can obtain a relatively reliable support foundation, eliminating the safety hazard of foundation collapse and ensuring the safety of equipment and personnel;

[0033] (2) The ball joint connection between the support seat and the cross-line beam can adapt to the error caused by the different heights of the two rails on the railway line, ensuring that the cross-line beam is vertically supported on the support seat; the support seat and the cross-line beam can be rotatably connected in the horizontal plane, thereby changing the width spacing between the two support seats, thereby meeting the support requirements of railway cranes on double railway lines with different spacings;

[0034] (3) Sliding supports are provided to meet the requirements of different leg spans. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a top view of the variable-span double-railway track support device for a railway crane of the present invention;

[0037] Figure 2 It is a front cross-sectional view of a variable-span double-railway track support pad device for a railway crane of the present invention;

[0038] Figure 3 It is an enlarged view of the elliptical area;

[0039] Figure 4 It is a cross-sectional view of the sliding support part. DETAILED DESCRIPTION

[0040] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 As shown, combined Figure 2 to Figure 4 The variable-span double-railway support device for a railway crane of the present invention comprises a span beam 1, a hanging ear 2, at least two support seats 3, a center plate 4, a radial spherical bearing 5, a fixed shaft 6, a thrust spherical bearing 7, a sliding support 8, two reverse hooks 9, two guide wheels 10, a slide plate 11 and an inner spherical pad 12.

[0042] The cross-line beam 1 plays a load-bearing role. Specifically, in this embodiment, the cross-line beam 1 is a bilaterally symmetrical structure, and two support seats 3 are symmetrically arranged at both ends of the cross-line beam 1. Specifically, in order to improve the force performance and reduce the weight, the cross-line beam 1 adopts a variable-section "wide flange type" box beam.

[0043] The lug 2 is connected to the cross-line beam 1 and is used to connect the railway crane leg to the outside. Specifically, a waist-round hole is provided at the end of the railway crane leg, and the lug 2 is composed of a screw and a nut. The screw is passed through the waist-round hole and then fastened with the nut to achieve a detachable connection.

[0044] The support seat 3 is arranged below the cross-line beam 1 and connected thereto, and two support positions 30 are arranged at the bottom thereof, and the support positions 30 are used to support on two rails 0 of the railway line.

[0045] In actual use, since the spacing between double-track rails may be different, the present invention satisfies the rotation between the cross-line beam 1 and the support seat 3 by rotatably connecting the support seat 3 and the cross-line beam 1 in a horizontal plane. By rotating between the cross-line beam 1 and the support seat 3, the slope between the cross-line beam 1 and the two rails 0 of the railway line is changed, thereby changing the width spacing between the two support seats 3, thereby meeting the support requirements of the railway crane for the two rails 0 of the railway line at different spacings. Specifically, the present invention is provided with a center plate 4, a radial spherical bearing 5 and a fixed shaft 6, wherein,

[0046] A countersunk hole 40 is provided in the middle of the center plate 4 for arranging the radial spherical bearing 5; the center plate 4 is fixedly arranged at the center of the support seat 3;

[0047] The radial spherical bearing 5 is disposed in the counterbore 40 and is coaxially fixed with the center plate 4;

[0048] The fixed shaft 6 is fixed to the cross-line beam 1 and to the radial spherical bearing 5 .

[0049] In this way, the support seat 3 can rotate around the fixed axis 6 through the radial spherical plain bearing 5 .

[0050] In actual use, there is an error in the height of the two rails of the railway line. In order to ensure that the cross-line beam 1 is vertically supported on the support seat 3, the support seat 3 is connected to the cross-line beam 1 with a ball pair. Specifically, the present invention is provided with a thrust spherical bearing 7, wherein:

[0051] The thrust spherical bearing 7 is arranged in the counterbore 40 and fixed coaxially with the center plate 4. The thrust spherical bearing 7 is arranged at the bottom of the radial spherical bearing 5 and abuts against it.

[0052] In this way, the support seat 3 can rotate left and right relative to the fixed shaft 6 through the thrust spherical bearing 7, and can also rotate horizontally around the fixed shaft 6 through the radial spherical bearing 5.

[0053] In order to meet the requirements of different railway crane leg spans, it is necessary to design the lug 2 to be slidably connected with the cross-line beam 1. Specifically, the present invention further provides a sliding support 8, wherein the lug 2 is fixed on the sliding support 8, and the sliding support 8 is slidably connected along the surface of the cross-line beam 1.

[0054] As a way to realize the sliding connection between the sliding support 8 and the cross-line beam 1 , two reverse hooks 9 are also included. The two reverse hooks 9 are fixed on the sliding support 8 and hook the bottom surfaces of the flange plates on both sides of the cross-line beam 1 .

[0055] As a way to realize the sliding connection between the sliding support 8 and the flying beam 1, a sliding plate 11 is also included, wherein one side of the sliding plate 11 is fixed to the sliding support 8, and the other side is slidingly connected to the upper surface of the flying beam 1. Specifically, the sliding plate 11 is an MGE sliding plate.

[0056] Preferably, the present invention further comprises two guide wheels 10, which are respectively embedded in the two reverse hooks 9 and are rollingly connected to the sides of the two flange plates of the cross-line beam 1. In this way, the sliding guide requirements of the sliding support 8 can be met, and the railway crane can also be moved together by retracting the outrigger cylinder to lift and hang the entire set of support pad devices when transferring.

[0057] The cross-line beam 1 supports the railway crane legs. In order to adapt to the relative rotation of the two, the present invention also includes an inner spherical pad 12. The lug 2 is arranged on the sliding support 8. The inner spherical pad 12 is fixed on the sliding support 8 and an inner spherical groove is arranged in the middle. The end of the railway crane leg is spherical, which is hinged with the lug 2 and selectively rotatably connected with the inner spherical pad 12. In this way, the end of the railway crane leg can rotate in the inner spherical groove.

[0058] The following describes the use method of the variable-span double-railway support pad device for a railway crane of the present invention, which includes the following steps:

[0059] S1, hinge the railway crane legs to the hanging ears 2. In this process, according to the requirements of different railway crane leg spans, the sliding support 8 is adjusted to slide on the surface of the cross-line beam 1 to adjust the position of the hanging ears 2.

[0060] S2, the railway crane legs are opened and extended, so that the two support positions 30 on the support seat 3 are initially aligned with the two rails 0 of the railway line. In this process, the support seat 3 can be rotated to adapt to double-track rails with different spacings.

[0061] S3, the support seat 3 is driven down by the oil cylinder on the railway crane leg, so that the two support positions 30 on the support seat 3 are against the two rails 0 of the railway line. In this process, if there is a height difference between the two rails 0 of the railway line, the support seat 3 will tilt accordingly, and the cross-line beam 1 will always be vertically supported on the support seat 3 by rotating the radial spherical bearing 5. In this process, the end of the railway crane leg also rotates in the inner spherical groove to make adaptive adjustments.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A variable-distance span double-railway support pad device for a railway crane, characterized in that: It comprises a cross-line beam (1), a hanging ear (2) and at least two supporting seats (3), wherein: A hanging lug (2) is connected to the cross-line beam (1) and is used for externally connecting the railway crane outrigger; A support seat (3) is arranged below the cross-line beam (1) and connected thereto, and has two support positions (30) arranged at its bottom, the support positions (30) being used to support on two steel rails (0) of the railway line; The support seat (3) and the cross-line beam (1) are rotatably connected in a horizontal plane and are connected by a ball joint; It also includes a central disk (4), a radial spherical bearing (5) and a fixed shaft (6), wherein: A countersunk hole (40) is provided in the middle of the core plate (4), and the core plate (4) is fixedly arranged at the center of the support seat (3); The radial spherical bearing (5) is arranged in the counterbore (40) and is coaxially fixed with the central disk (4); The fixed shaft (6) is fixed to the cross-line beam (1) and to the radial spherical bearing (5); It also includes a thrust spherical bearing (7), wherein: A thrust spherical bearing (7) is arranged in the counterbore (40) and fixed coaxially with the center plate (4); the thrust spherical bearing (7) is arranged at the bottom of the radial spherical bearing (5) and mutually abuts against it; It also includes a sliding support (8), wherein: The hanging ear (2) is fixed on the sliding support (8), and the sliding support (8) is slidably connected along the surface of the cross-line beam (1); The cross-line beam (1) is a "wide flange type" box beam; Two reverse hooks (9) are fixed on the sliding support (8) and hook the bottom surfaces of the flange plates on both sides of the cross-line beam (1); It also includes two guide wheels (10), wherein the two guide wheels (10) are respectively nested on the two reverse hooks (9) and are rollingly connected to the side surfaces of the two flange plates of the cross-line beam (1); It also includes a slide plate (11), wherein one side of the slide plate (11) is fixed to the sliding support (8), and the other side is slidably connected to the upper surface of the cross-line beam (1); It also includes an inner spherical pad (12), the lug (2) is arranged on the sliding support (8), the inner spherical pad (12) is fixed on the sliding support (8) and an inner spherical groove is arranged in the middle; the end of the railway crane leg is spherical, which is hingedly connected to the lug (2) and selectively rotatably connected to the inner spherical pad (12); The following steps are involved: S1, hinge the railway crane legs to the hanging ears (2); S2, opening and retracting the legs of the railway crane so that the two support positions (30) on the support seat (3) are initially aligned with the two rails (0) of the railway line; S3, the support seat (3) is driven down by the oil cylinder on the railway crane support leg, so that the two support positions (30) on the support seat (3) are against the two steel rails (0) of the railway line.

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