Steel truss structure of cable loading crane of space suspension bridge

Abstract

The utility model discloses a steel truss structure of a cable crane of a spatial suspension bridge, belongs to the technical field of cable cranes, and solves the technical problems that the existing steel truss structure is fixedly connected and the length cannot be adjusted. The utility model comprises a middle section, two ends of the middle section are respectively provided with a side section, one end and / or the other end of the middle section are / is provided with a sleeving structure in sliding connection with the side sections, a driving mechanism for driving the side sections to reciprocate, and a locking mechanism for locking the side sections. The middle section and the side sections are in sliding connection, when the width of a main cable changes, the driving mechanism can be controlled to drive the side sections to move to adjust the span between the side sections at the two ends so as to adapt to the width of the main cable, normal work of the cable crane is guaranteed, the driving mechanism has a locking function, and the driving mechanism is convenient to use. After the side sections are adjusted in place, double locking is carried out through the locking mechanism, it is guaranteed that the steel truss does not move during beam hanging, and safety and reliability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable crane technical field, more specifically, it relates to a kind of space suspension bridge cable crane steel truss structure. BACKGROUND

[0002] Cable crane steel truss is a key structural part of cable crane, mainly used to connect two running mechanisms, and bear and transfer huge load in hoisting process. Steel truss is connected by a plurality of members according to certain geometric shape, which mainly includes top chord, bottom chord, web member and the like, to form a space truss structure. Its design and manufacture need to meet high strength, stability and reliability requirements to ensure safety and efficiency when hoisting large components such as bridge stiffening beams.

[0003] However, the current steel truss structure has the following shortcomings: the steel truss structure is fixedly connected, and the length cannot be adjusted. It is of fixed length and only suitable for cable crane with fixed main cable width (i.e. the width between two main cables). UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the above-mentioned shortcomings of the prior art. The utility model aims to provide a space suspension bridge cable crane steel truss structure which can be adjusted in length to be suitable for cable crane with variable main cable width.

[0005] The technical solution of the utility model is: a space suspension bridge cable crane steel truss structure, comprising a middle segment, two end portions of the middle segment are respectively provided with edge segments, one end and / or the other end of the middle segment is provided with a sleeve joint structure for slidingly connecting the edge segment, a driving mechanism for driving the edge segment to reciprocate, and a locking mechanism for locking the edge segment.

[0006] As a further improvement, the sleeve joint structure comprises a first connecting piece provided at the end portion of the middle segment and a second connecting piece provided at the end portion of the edge segment. The first connecting piece is slidingly inserted into the second connecting piece, or the first connecting piece is slidingly sleeved on the outer wall of the second connecting piece.

[0007] Further, the first connecting piece is a circular rod, and the second connecting piece is a circular sleeve. The circular rod is slidingly inserted into the circular sleeve.

[0008] Further, the first connecting piece is provided at four corners of the middle segment, and correspondingly, the second connecting piece is provided at four corners of the edge segment.

[0009] Further, the cross-sectional size of the first connecting member at the top of the middle section is smaller than that of the first connecting member at the bottom of the middle section, and the cross-sectional size of the second connecting member at the top of the side section is smaller than that of the second connecting member at the bottom of the side section.

[0010] Further, the driving mechanism is a hydraulic jack or an electric push rod.

[0011] Further, the locking mechanism comprises a threaded rod and ear plates respectively arranged on the middle section and the side section, and the two ends of the threaded rod pass through the ear plates of the middle section and the side section respectively and are locked by locking nuts.

[0012] Further, the locking mechanism is mounted on the sleeve joint structure.

[0013] Further, the end of the side section away from the middle section is provided with a lifting load-bearing section, the end of the lifting load-bearing section close to the side section is provided with a walking mechanism mounting seat for mounting a walking mechanism, and the end of the lifting load-bearing section away from the side section is provided with a lifting jack mounting seat for mounting a lifting jack.

[0014] Further, the end of the lifting load-bearing section away from the side section is provided with a wire rope winding and unwinding device mounting section for mounting a wire rope winding and unwinding device.

[0015] Advantages

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The middle section and the side section of the utility model are in sliding connection, when the width of the main cable changes, the span between the two ends of the side section can be adjusted by controlling the driving mechanism to drive the side section to move, so that the width of the main cable is adapted and the cable crane can work normally, the driving mechanism itself has a locking function, and after the side section is adjusted in place, the locking mechanism is used for double locking, so that the steel truss does not move when the beam is lifted, and safety and reliability are ensured.

[0018] 2. The utility model uses a hydraulic jack as the power execution mechanism of the steel truss amplitude variation, occupies small space, and the hydraulic control technology is mature, the amplitude variation is stable, and the adjustment precision is high.

[0019] 3. The utility model adopts a round steel pipe sleeve form, the extension is smooth during amplitude variation, and the structure is compact and stable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 3 For Figure 2 Enlarged view at A in the middle section;

[0023] Figure 4 For the structure diagram of the middle section of the utility model;

[0024] Figure 5 For the structure diagram of the edge section of the utility model;

[0025] Figure 6 For the structure diagram of the lifting load section of the utility model;

[0026] Figure 7 For the structure diagram of the take-up device section of the utility model;

[0027] Figure 8 For the structure diagram of the driving mechanism of the utility model;

[0028] Figure 9 For the structure diagram of the locking mechanism of the utility model.

[0029] Wherein: 1 - middle section, 2 - edge section, 3 - driving mechanism, 4 - locking mechanism, 5 - first connecting piece, 6 - second connecting piece, 7 - threaded rod, 8 - ear plate, 9 - locking nut, 10 - lifting load section, 11 - walking mechanism mounting seat, 12 - lifting jack mounting seat, 13 - take-up device section, 14 - sleeve structure. DETAILED DESCRIPTION

[0030] The utility model will be further described below in combination with the specific embodiments in the drawings.

[0031] Referring to Figures 1-9 A space suspension bridge cable load crane steel truss structure, including middle section 1, the both ends of middle section 1 are equipped with edge section 2 respectively.

[0032] In an embodiment, one end of middle section 1 is equipped with sleeve structure 14 for slidingly connecting edge section 2, driving mechanism 3 for driving edge section 2 to reciprocate, locking mechanism 4 for locking edge section 2; the other end of middle section 1 is fixedly connected with edge section 2.

[0033] In an embodiment, one end of middle section 1 is fixedly connected with edge section 2; the other end of middle section 1 is equipped with sleeve structure 14 for slidingly connecting edge section 2, driving mechanism 3 for driving edge section 2 to reciprocate, locking mechanism 4 for locking edge section 2.

[0034] In one embodiment, the two ends of the middle section 1 are provided with sleeve joint structures 14 for connecting the edge sections 2, a driving mechanism 3 for driving the edge sections 2 to reciprocate, and a locking mechanism 4 for locking the edge sections 2.

[0035] When the width of the main cable changes, the span between the two edge sections 2 can be adjusted by controlling the driving mechanism 3 to drive the edge sections 2 to move, so as to adapt to the width of the main cable and ensure that the cable crane can work normally. The driving mechanism 3 itself has a locking function, and after the edge sections are adjusted to the position, the locking mechanism 4 is used for double locking to ensure that the steel truss does not move when the beam is lifted, and is safe and reliable.

[0036] Specifically, the sleeve joint structure 14 includes a first connecting piece 5 arranged at the end of the middle section 1 and a second connecting piece 6 arranged at the end of the edge section 2; the first connecting piece 5 is slidingly inserted into the second connecting piece 6; or the first connecting piece 5 is slidingly sleeved on the outer wall of the second connecting piece 6.

[0037] Preferably, the first connecting piece 5 is a circular rod, and the second connecting piece 6 is a circular sleeve pipe. The circular steel pipe sleeve pipe form is adopted, and the steel truss is flexible and compact and stable when the amplitude is changed.

[0038] Of course, the cross section of the first connecting piece 5 and the second connecting piece 6 can also be other shapes, such as triangular, rectangular, polygonal or oval, and the cross section of the first connecting piece 5 and the second connecting piece 6 can also be T-shaped or dovetail-shaped (similar to dovetail-shaped guide rail).

[0039] The first connecting piece 5 is arranged at the four corners of the middle section 1, and correspondingly, the second connecting piece 6 is arranged at the four corners of the edge section 2. Among them, the cross-sectional size of the first connecting piece 5 at the top of the middle section 1 is smaller than that of the first connecting piece 5 at the bottom of the middle section 1, and correspondingly, the cross-sectional size of the second connecting piece 6 at the top of the edge section 2 is smaller than that of the second connecting piece 6 at the bottom of the edge section 2.

[0040] The driving mechanism 3 is a hydraulic jack or an electric push rod, and the two ends of the driving mechanism 3 are respectively hinged with the middle section 1 and the edge section 2. The driving mechanism 3 is respectively located at the two sides of the bottom of the middle section 1. Figure 8 The driving mechanism 3 is a hydraulic jack, and the hydraulic jack is used as the power execution mechanism for the amplitude change (length adjustment) of the steel truss, occupies small space, the hydraulic control technology is mature, and the amplitude change is stable, accurate and high.

[0041] The hydraulic jack can adopt a long-stroke YD type jack, and the power source comes from a hydraulic pump station.

[0042] The locking mechanism 4 comprises a threaded rod 7, and ear plates 8 arranged on the intermediate segment 1 and the side segment 2 respectively, both ends of the threaded rod 7 pass through the ear plates 8 of the intermediate segment 1 and the side segment 2 respectively and are locked by locking nuts 9. The locking nuts 9 can be double nuts to improve the locking stability. The threaded rod 7 is made of high-strength material, such as high-strength threaded steel rod or titanium alloy threaded rod.

[0043] Preferably, the locking mechanism 4 is installed on the sleeve joint structure 14. As shown in the drawings, Figure 3 The first connecting piece 5 at the bottom of the intermediate segment 1 is welded with an ear plate 8, the second connecting piece 6 at the bottom of the side segment 2 is welded with an ear plate 8, and the threaded rod 7 is tightly arranged on the first connecting piece 5 and the second connecting piece 6, so that the locking stability is high.

[0044] The side segment 2 is provided with a lifting load-bearing segment 10 at the end away from the intermediate segment 1, which is the main force bearing member when the beam is lifted. The lifting load-bearing segment 10 is located at the bottom of the side segment 2, and the lifting load-bearing segment 10 and the side segment 2 are connected by high-strength bolts. The lifting load-bearing segment 10 is provided with a walking mechanism mounting seat 11 for mounting a walking mechanism (a cable crane walks on the main cable through the walking mechanism) at the end close to the side segment 2, and the lifting load-bearing segment 10 is provided with a lifting jack mounting seat 12 for mounting a lifting jack (the lifting jack is used to lift the bridge member) at the end away from the side segment 2. Compared with the conventional steel truss, the lifting jack mounting seat 12 of the utility model is placed outside the main cable (the lifting jack mounting seat 12 of the conventional steel truss is inside the main cable), which can effectively avoid the temporary structure inside the variable amplitude main cable.

[0045] The lifting load-bearing segment 10 is provided with a wire rope winding and unwinding device mounting segment 13 at the end away from the side segment 2. Compared with the conventional steel truss, the wire rope winding and unwinding device mounting segment 13 of the utility model is placed outside the main cable, which can effectively avoid the temporary structure inside the variable amplitude main cable. The end of the wire rope winding and unwinding device mounting segment 13 and the end of the lifting load-bearing segment 10 are connected by high-strength bolts.

[0046] The above is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which will not affect the effect and practicality of the utility model.

Claims

1. A spatial catenary bridge cable load crane steel truss structure, characterized by, The utility model relates to a section of the middle (1) is equipped with the edge section (2) on both ends respectively, one end and / or the other end of the middle section (1) is equipped with the sleeve joint structure (14) of sliding connection edge section (2), the driving mechanism (3) for driving the reciprocating motion of edge section (2), the locking mechanism (4) for locking edge section (2).

2. A spatial cable crane steel truss structure for a suspension bridge cable according to claim 1, characterized in that, The sleeve joint structure (14) includes a first connecting piece (5) provided at the end of the middle section (1), and a second connecting piece (6) provided at the end of the edge section (2); the first connecting piece (5) is slidingly inserted into the second connecting piece (6); or the first connecting piece (5) is slidingly sleeved on the outer wall of the second connecting piece (6).

3. A spatial suspension bridge cable load crane steel truss structure according to claim 2, characterized in that, The first connecting piece (5) is a circular rod, and the second connecting piece (6) is a circular sleeve.

4. A spatial cable crane steel truss structure for a suspension bridge cable according to claim 2, characterized in that, The first connecting piece (5) is provided at four corners of the middle section (1), and correspondingly, the second connecting piece (6) is provided at four corners of the edge section (2).

5. A spatial suspension bridge cable load crane steel truss structure according to claim 4, characterized in that, The cross-sectional dimension of the first connecting piece (5) at the top of the middle section (1) is smaller than that of the first connecting piece (5) at the bottom of the middle section (1), and correspondingly, the cross-sectional dimension of the second connecting piece (6) at the top of the edge section (2) is smaller than that of the second connecting piece (6) at the bottom of the edge section (2).

6. A spatial cable crane steel truss structure for a suspension bridge cable according to claim 1, characterized in that, The driving mechanism (3) is a hydraulic jack or an electric push rod.

7. A spatial cable crane steel truss structure for a suspension bridge cable load according to claim 1, characterized in that, The locking mechanism (4) includes a threaded rod (7), and an ear plate (8) provided at the middle section (1) and the edge section (2) respectively; both ends of the threaded rod (7) pass through the ear plates (8) of the middle section (1) and the edge section (2) respectively and are locked by a locking nut (9).

8. A spatial cable crane steel truss structure for a suspension bridge cable load according to claim 1, characterized in that, The locking mechanism (4) is installed on the sleeve joint structure (14).

9. A spatial cable crane steel truss structure for a suspension bridge cable load according to claim 1, characterized in that, The end of the edge section (2) away from the middle section (1) is provided with a lifting load-bearing section (10), the end of the lifting load-bearing section (10) close to the edge section (2) is provided with a walking mechanism mounting seat (11) for mounting a walking mechanism, and the end of the lifting load-bearing section (10) away from the edge section (2) is provided with a lifting jack mounting seat (12) for mounting a lifting jack.

10. A spatial cable crane steel truss structure for a suspension bridge cable load according to claim 9, characterized in that, The end of the lifting load-bearing section (10) away from the edge section (2) is provided with a take-up device section (13) for mounting a steel strand winding and unwinding device.

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