Flexible anti-falling beam device capable of automatically compensating displacement

Abstract

A flexible anti-falling beam device capable of automatically compensating displacement relates to an anti-falling beam device and comprises a cable body, an anchoring assembly and a connecting assembly for connecting the anchoring assembly to a box beam or a pier, the connecting assembly comprises a single-lug plate and a fork lug support, and one end of the single-lug plate is fixedly connected with the anchoring assembly; the fork lug support comprises a connecting bottom plate and two side plates, the connecting bottom plate is fixedly installed on a box girder or a bridge pier, the bottoms of the two side plates are fixed to the connecting bottom plate respectively, guide grooves are formed in the two side plates respectively, and the other end of the single-lug plate is located between the two side plates and hinged to the two side plates through pin shafts located in the guide grooves. According to the utility model, the space requirement of structure displacement expansion caused by support deformation and thermal expansion and cold contraction of the box girder can be met, and the free release effect of the displacement space in the longitudinal direction and the transverse direction can be achieved at the same time; and the cable has the characteristics of reliable structure, low cost, simple cable body manufacturing process and the like, and is easy to popularize and apply.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-falling beam devices, in particular to a kind of flexible anti-falling beam device of automatic displacement compensation type. BACKGROUND

[0002] Most of the anti-falling beam in the market is steel bar and steel strand as the main bearing of anti-falling beam, wherein the steel bar type anti-falling beam has large rigidity and low strength, and has no flexible buffering performance itself, and the anti-corrosion performance of the steel bar anti-falling beam device is also poor. The steel strand type anti-falling beam mostly adopts a finished product cable structure, and the manufacturing process is relatively complex, and the cost is also high, so it is also limited in use, especially the connection mode arranged at the bottom of the box girder and the pier, it is difficult to achieve the effect of automatic displacement compensation of anti-falling beam. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a kind of flexible anti-falling beam device of automatic displacement compensation type, so as to solve the effect of automatic displacement compensation of anti-falling beam in the prior art.

[0004] The technical scheme for solving the above technical problem is: a kind of flexible anti-falling beam device of automatic displacement compensation type, including cable body, anchor assembly connected at both ends of cable body respectively, connecting assembly for connecting anchor assembly on box girder or pier, the connecting assembly includes single ear plate and fork ear support, one end of the single ear plate is fixedly connected with the anchor assembly, the fork ear support includes connecting bottom plate and two side plates, the connecting bottom plate is fixedly installed on the box girder or the pier, the two side plates are respectively fixed on the connecting bottom plate, and the two side plates are respectively provided with guide grooves, the other end of the single ear plate is located between the two side plates, and is hinged with the two side plates through the pin shaft located in the guide groove.

[0005] The further technical scheme of the utility model is: the guide groove is a pear-shaped guide groove with one end large and one end small.

[0006] The further technical scheme of the utility model is: a deviation correction energy-absorbing washer is further arranged between the side plate and the single ear plate at both ends of the pin shaft.

[0007] The further technical scheme of the utility model is: the deviation correction energy-absorbing washer is integrally composed of a ring-shaped spring ring and a rubber layer wrapped outside the ring-shaped spring ring.

[0008] The further technical scheme of the utility model is: the side plate installed on the connecting bottom plate at the end of the pier is side plate A, and the length direction of the guide groove of the side plate A is arranged along the direction perpendicular to the connecting bottom plate; the side plate installed on the connecting bottom plate at the end of the box girder is side plate B, and the length direction of the guide groove of the side plate B is arranged along the direction parallel to the connecting bottom plate.

[0009] The further technical scheme of the utility model discloses: the cable body is composite type protection cable body, and the composite type protection cable body includes steel strand, isolation frame, fastening band, isolation frame is equipped with steel strand positioning hole respectively, the steel strand is installed in the steel strand positioning hole, and the fastening band is fastened and is wrapped around the steel strand and isolation frame outside.

[0010] The further technical scheme of the utility model discloses: the fastening band is still wrapped with a layer of outer protective sleeve outside, and the steel strand is arranged in single row or double rows or multiple parallel rows.

[0011] The further technical scheme of the utility model discloses: the anchoring assembly includes energy-absorbing bracket, energy-absorbing sleeve and extrusion sleeve, one end of the energy-absorbing bracket is provided with a threaded hole on the outer side and a light hole in the middle, and the other end of the energy-absorbing bracket is provided with a steel strand hole corresponding to the steel strand of the cable body, the threaded hole of the energy-absorbing bracket is connected with the single ear plate through thread, the light hole of the energy-absorbing bracket is provided with the energy-absorbing sleeve, one end of the energy-absorbing sleeve is provided with an inner hole, and the other end of the energy-absorbing sleeve is provided with a small hole for passing through the steel strand, the extrusion sleeve is installed in the inner hole of the energy-absorbing sleeve, and the extrusion sleeve is extruded and anchored at the end of the steel strand, and the gap around the extrusion sleeve is filled with anticorrosive material.

[0012] The further technical scheme of the utility model discloses: the energy-absorbing sleeve is provided with an elastic steel plate with a steel strand perforation at the bottom end of the inner hole of the energy-absorbing sleeve and the bottom end of the energy-absorbing sleeve respectively.

[0013] The further technical scheme of the utility model discloses: the anchoring assembly further includes an energy-absorbing spring, one end of the energy-absorbing spring is tightly attached to the end face of the extrusion sleeve, and the other end of the energy-absorbing spring is tightly attached to the end face of the bottom end of the light hole of the energy-absorbing bracket.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The transverse and longitudinal displacement of the box girder can be automatically compensated

[0016] The connecting assembly adopts the structure form that the single ear plate and the fork ear support are hinged, and the structure of the guide groove is further designed on the two side plates of the fork ear support, so that the single ear plate can displace transversely and longitudinally along the guide groove, and thus the transverse and longitudinal displacement of the box girder can be automatically compensated.

[0017] Further, the utility model further is equipped with the deviation correction energy -absorbing washer between the side plate and single lug plate of pin shaft both ends, this deviation correction energy -absorbing washer is coupled with the combination of annular spring ring and flexible oil -resistant rubber, when the lateral displacement changes, the side plate of fork lug support is subjected to the action of bending deformation, generates the change of lateral displacement, at this moment, the deviation correction energy -absorbing washer can play the role of buffering and absorbing bending force using the deformable principle of its rubber spring ring, can also utilize the characteristics of deformable, satisfy the need of bending deformation displacement space.

[0018] Therefore, the utility model can satisfy the space requirement of structure displacement expansion caused by support deformation and box girder thermal expansion and cold shrinkage, and can realize the free release effect of displacement space in longitudinal and transverse directions.

[0019] 2. reliable structure

[0020] In the fork lug support of the utility model, guide grooves are designed on the two side plates, in particular, pear-shaped guide grooves with one large end and one small end and arc transition connection are designed, which can realize free movement of the pin shaft, and the pear-shaped arc segment can realize transverse space movement, avoiding the phenomenon of jamming of the pin shaft in the sliding process.

[0021] 3. Each load bearing rib can realize independent energy absorption compensation

[0022] In the anchoring assembly of the utility model, an energy-absorbing spring is arranged corresponding to each independent extrusion sleeve, so that energy absorption and buffering are more concentrated, and the independent energy dissipation and stress release effect of each extrusion sleeve is more obvious. By designing multiple sets of energy-absorbing springs and energy-absorbing sleeves coupled together, a reinforced energy-absorbing structure is achieved, so that each load bearing rib can realize independent energy absorption compensation.

[0023] 4. Low cost of anchoring assembly

[0024] The anchoring assembly has certain energy-absorbing and self-resetting functions, and the anchor device and the energy-absorbing sleeve are coupled together to effectively realize the optimization design of the anchor device structure, so that the structure of the anti-falling beam itself is simpler to manufacture and install, the appearance is more compact, the overall design cost can be greatly reduced, and the product has more economic value than the traditional anti-falling beam product.

[0025] 5. Simple manufacturing process of cable body

[0026] The cable body of the utility model adopts a single independent anchoring combined assembly and an overall sealing and corrosion prevention manufacturing process route, has a fully enclosed design concept, and has good corrosion prevention measures. The production of the cable body is more flexible, and the requirement for production equipment is more lightweight. According to the working condition, a mobile production mode can be selected, that is, the cable body can be produced in the factory or on the construction site, so that the production and manufacturing of the cable body are more convenient, thereby effectively reducing the production cost.

[0027] 6. The cable body structure is more flexible

[0028] The cable body steel strand of the utility model adopts single row or double row or multi-row parallel arrangement, the outer circle of cable body adopts fastening belt, outer protective sleeve to carry out double layer sealing treatment, the gap between steel strands is isolated by isolation frame, replaces the conventional circular cable body arrangement mode, the cable body structure arrangement is more flexible, and the demand selectivity for installation space is also more.

[0029] 7. The cable body has good corrosion resistance

[0030] The cable body steel strand of the utility model adopts single row or double row or multi-row parallel arrangement, can guarantee that the stress of each cable is equal and uniform, and the gap between cable arrangements can be minimized, the gap between cable bodies is positioned by soft isolation frame, can increase the damping effect between cable bodies, avoid cable body shaking, two protective layers are arranged on the outside, that is, the steel strand bundle is first consolidated and shaped by fastening belt, and then a layer of outer protective sleeve is additionally arranged on the outermost layer, which greatly improves the arrangement compactness and corrosion resistance of the cable body.

[0031] Next, the technical features of the automatic displacement compensation type flexible anti-falling beam device will be further described in combination with the drawings and examples. DRAWINGS

[0032] Figure 1 : Structure diagram of the automatic displacement compensation type flexible anti-falling beam device of the utility model in example one,

[0033] Figure 2 : Structure diagram of the connecting assembly in example one,

[0034] Figure 3 : Structure diagram of the forked ear support in example one,

[0035] Figure 4 : Structure diagram of the anchoring assembly in example one,

[0036] Figure 5 : Structure diagram of the cable body in example one,

[0037] Figure 6 : Structure diagram of the automatic displacement compensation type flexible anti-falling beam device of the utility model in example two,

[0038] Figure 7 : Structure diagram of the connecting assembly in example two,

[0039] Figure 8 : Structure diagram of the forked ear support in example one,

[0040] Figure 9: structural diagram of the anchoring assembly of embodiment one,

[0041] Figure 10 : structural diagram of the cable body of embodiment one,

[0042] Figure 11 : installation diagram of the flexible anti-falling beam device capable of automatically compensating displacement of the utility model of embodiment two;

[0043] In the above figures, the reference signs are explained as follows:

[0044] 1-cable body, 11-steel strand, 12-isolation frame, 121-steel strand positioning hole, 13-fastening belt, 14-outer protective sleeve,

[0045] 2-anchoring assembly, 21-energy-absorbing holder, 211-threaded hole, 212-steel strand hole,

[0046] 22-energy-absorbing sleeve, 221-elastic steel plate, 23-extrusion sleeve, 24-energy-absorbing spring,

[0047] 3-connection assembly, 31-single ear plate,

[0048] 32-forked ear support, 321-connection bottom plate, 322-side plate, 322a-side plate A, 322b-side plate B,

[0049] 3221-guiding groove, 33-pivot,

[0050] 34-deviation-correcting energy-absorbing washer, 341-annular spring ring, 342-rubber layer,

[0051] 4-box girder, 5-pier. DETAILED DESCRIPTION

[0052] Embodiment one

[0053] Figure 1 Disclosed in the present application is a flexible anti-falling beam device capable of automatically compensating displacement, comprising a cable body 1, an anchoring assembly 2, and a connection assembly 3, wherein the anchoring assembly 2 is connected to both ends of the cable body 1 respectively, and the connection assembly 3 connects the anchoring assembly 2 to a box girder 4 or a pier 5 respectively.

[0054] The cable body 1 is a composite protective cable body, which comprises a steel strand 11, an isolation frame 12, a fastening belt 13, and an outer protective sleeve 14 (see Figure 5); the steel strand 11 is arranged in vertical double rows in parallel; the spacer frame 12 is a soft spacer frame, and the spacer frame 12 is respectively provided with a steel strand positioning hole 121, the steel strand 11 is installed in the steel strand positioning hole 121, and the fastening band 13 is fastened and wrapped outside the steel strand 11 and the spacer frame 12, and a layer of the outer protective sleeve 14 is further wrapped outside the fastening band 13.

[0055] The anchoring assembly 2 comprises an energy-absorbing bracket 21, an energy-absorbing sleeve 22, an extrusion sleeve 23 and an energy-absorbing spring 24 (see Figure 4 ); one end of the energy-absorbing bracket 21 is provided with a threaded hole 211 located on the outer side and a light hole located in the middle, and the other end of the energy-absorbing bracket 21 is provided with a steel strand hole 212 corresponding to the steel strand 11 of the cable body 1; the energy-absorbing sleeve 22 is installed in the light hole of the energy-absorbing bracket 21, the energy-absorbing sleeve 22 is made of high-performance polyurethane material, one end of the energy-absorbing sleeve 22 is provided with an inner hole, and the other end of the energy-absorbing sleeve 22 is provided with a small hole for passing through the steel strand 11; the extrusion sleeve 23 is installed in the inner hole of the energy-absorbing sleeve 22, and the extrusion sleeve 23 is respectively extruded and anchored at the end of the steel strand 11, and the gap around the extrusion sleeve is filled with anticorrosive material; one end of the energy-absorbing spring 24 is tightly attached to the end face of the extrusion sleeve 23, and the other end of the energy-absorbing spring 24 is tightly attached to the end face of the bottom end of the light hole of the energy-absorbing bracket 21. The device integrates the anchorage structure and the energy-absorbing buffer assembly, and forms a whole assembly with the cable body, which can not only realize the basic bearing function of preventing beam falling, but also has the function of self-energy-absorbing buffer, and has the advantages of functional combination, compact structure, convenient production and assembly and beautiful appearance.

[0056] The connecting assembly 3 comprises a single ear plate 31 and a fork ear support 32, one end of the single ear plate 31 is fixedly connected with the threaded hole 211 of the energy-absorbing bracket 21 through threads; the fork ear support 32 comprises a connecting bottom plate 321 and two side plates 322, the connecting bottom plate 321 is fixedly installed on the box girder 4 or the pier 5, the bottoms of the two side plates 322 are respectively fixed on the connecting bottom plate 321, and the two side plates 322 are respectively provided with a pear-shaped guide groove 3221 with one large end and one small end; the other end of the single ear plate 31 is located between the two side plates 322 and is hingedly connected with the two side plates 322 through a pin shaft 33 located in the pear-shaped guide groove 3221. A deviation-correcting energy-absorbing washer 34 is further respectively arranged between the side plates 322 and the single ear plate 31 at both ends of the pin shaft 33, the deviation-correcting energy-absorbing washer 34 is integrally composed of a ring-shaped spring ring 341 and a rubber layer 342 wrapped outside the ring-shaped spring ring 341, and the pin shaft 33 passes through the side plate 322, the ring-shaped spring ring 341, the single ear plate 31, the ring-shaped spring ring 341 and the other side plate 322 in sequence to connect the single ear plate 31 and the fork ear support 32 together.

[0057] In the first embodiment, the side plate 322 installed on the connecting base plate 321 at the end of the pier 5 is a side plate A 322a, and the guide groove length direction of the side plate A 322a is arranged in a direction perpendicular to the connecting base plate 321; the side plate 322 installed on the connecting base plate 321 at the end of the box girder 4 is a side plate B 322b, and the guide groove length direction of the side plate B 322b is arranged in a direction parallel to the connecting base plate 321.

[0058] Embodiment two

[0059] Figure 6 Disclosed in the second embodiment is another kind of flexible anti-falling beam device capable of automatically compensating displacement, comprising a cable body 1, an anchoring assembly 2, and a connecting assembly 3, the anchoring assembly 2 is connected to both ends of the cable body 1 respectively, and the connecting assembly 3 connects the anchoring assembly 2 to the box girder 4 or the pier 5 respectively. Wherein:

[0060] The cable body 1 is a composite protective cable body, which comprises a steel strand 11, a spacer frame 12, a fastening belt 13, and an outer protective sleeve 14 (see Figure 10 ); the steel strand 11 is arranged in a vertical single row; the spacer frame 12 is a soft spacer frame, which is provided with a steel strand positioning hole 121, and the steel strand 11 is installed in the steel strand positioning hole 121; the fastening belt 13 is tightly wrapped around the steel strand 11 and the spacer frame 12, and an outer protective sleeve 14 is further wrapped outside the fastening belt 13.

[0061] The anchoring assembly 2 comprises an energy-absorbing holder 21, an energy-absorbing sleeve 22, and an extrusion sleeve 23 (see Figure 9 ); one end of the energy-absorbing holder 21 is provided with a threaded hole 211 on the outer side and a light hole in the middle, and the other end of the energy-absorbing holder 21 is provided with a steel strand hole 212 corresponding to the steel strand 11 of the cable body 1; the light hole of the energy-absorbing holder 21 is provided with the energy-absorbing sleeve 22, which is made of high-performance polyurethane material, one end of the energy-absorbing sleeve 22 is provided with an inner hole, and the other end of the energy-absorbing sleeve 22 is provided with a small hole for passing through the steel strand 11; and the energy-absorbing sleeve 22 is provided with an elastic steel plate 221 with a steel strand perforation at the bottom end of the inner hole and the bottom end of the energy-absorbing sleeve 22 respectively; the extrusion sleeve 23 is installed in the inner hole of the energy-absorbing sleeve 22, and the extrusion sleeve 23 is extruded and anchored at the end of the steel strand 11, and the gap around the extrusion sleeve is filled with corrosion-resistant material. The device integrates the anchorage structure and the energy-absorbing buffer assembly, and forms a whole assembly with the cable body, which can not only realize the basic load-bearing function of anti-falling beam, but also has the function of self-energy-absorbing buffer, and has the advantages of functional composite, compact structure, easy production and assembly, and beautiful appearance.

[0062] The connecting assembly 3 comprises a single lug plate 31 and a fork lug support 32. One end of the single lug plate 31 is fixedly connected with the threaded hole 211 of the energy-absorbing support 21 through screw thread. The fork lug support 32 comprises a connecting bottom plate 321 and two side plates 322. The connecting bottom plate 321 is fixedly installed on the box girder 4 or the pier 5. The bottom of each of the two side plates 322 is fixedly installed on the connecting bottom plate 321. Each of the two side plates 322 is provided with two long-strip-shaped guide grooves 3221 of the same size at two ends. The other end of the single lug plate 31 is located between the two side plates 322 and is hingedly connected with the two side plates 322 through a pin shaft 33 located in the guide grooves 3221. A deviation-correcting energy-absorbing gasket 34 is further arranged between the side plates 322 and the single lug plate 31 at two ends of the pin shaft 33. The deviation-correcting energy-absorbing gasket 34 is a buffer energy-absorbing gasket made of high-elastic polyurethane or rubber material. The pin shaft 33 passes through the side plates 322, the deviation-correcting energy-absorbing gasket 34, the single lug plate 31, the deviation-correcting energy-absorbing gasket 34 and the other side plate 322 in sequence, and connects the single lug plate 31 and the fork lug support 32 together.

[0063] In the first embodiment, the side plate 322 installed on the connecting bottom plate 321 at the end of the pier 5 is a side plate A 322a. The long-strip-shaped guide groove of the side plate A 322a is arranged in a direction perpendicular to the connecting bottom plate 321. The side plate 322 installed on the connecting bottom plate 321 at the end of the box girder 4 is a side plate B 322b. The long-strip-shaped guide groove of the side plate B 322b is arranged in a direction parallel to the connecting bottom plate 321.

[0064] As a variation of the first and second embodiments, the steel strands 11 of the cable body 1 can also be arranged in multiple vertical rows in parallel.

[0065] The manufacturing process of the cable body is as follows:

[0066] First, the single extrusion sleeve is independently extruded and wrapped around one end of the steel strand. The other end of the steel strand is inserted into the energy-absorbing support and the energy-absorbing sleeve, with one sleeve at each end. The spacer frame between the steel strands is positioned and installed. Then, the other end of the extrusion sleeve is extruded. Subsequently, the extrusion sleeve is installed on the energy-absorbing support and the energy-absorbing sleeve to form a complete set of anchoring assemblies. The gaps around the extrusion sleeve are sealed by filling corrosion-resistant materials. The cable body is arranged in a single row or double rows or multiple parallel rows. The cable body is then wrapped and sealed with fastening bands and installed with an outer protective sleeve.

Claims

1. A flexible anti-fall beam device with automatic displacement compensation, comprising a cable body (1), anchoring components (2) respectively connected to both ends of the cable body (1), and a connecting component (3) connecting the anchoring components (2) to a box girder (4) or a pier (5), characterized in that: The connecting component (3) includes a single ear plate (31) and a fork ear support (32). One end of the single ear plate (31) is fixedly connected to the anchoring component (2). The fork ear support (32) includes a connecting base plate (321) and two side plates (322). The connecting base plate (321) is fixedly installed on the box girder (4) or the pier (5). The bottom of the two side plates (322) is fixed on the connecting base plate (321). The two side plates (322) are respectively provided with guide grooves (3221). The other end of the single ear plate (31) is located between the two side plates (322) and is hinged to the two side plates (322) through a pin (33) located in the guide groove (3221).

2. The automatically compensating displacement type flexible anti-fall beam device according to claim 1, characterized in that: The guide groove (3221) is a pear-shaped guide groove with one end larger than the other.

3. The automatically compensating displacement type flexible anti-fall beam device according to claim 1, characterized in that: Correction and energy-absorbing washers (34) are provided between the side plates (322) and the single ear plate (31) at both ends of the pin (33).

4. The automatically compensating displacement type flexible anti-fall beam device according to claim 3, characterized in that: The aforementioned correction energy-absorbing washer (34) is composed of an annular spring ring (341) and a rubber layer (342) wrapped around the annular spring ring (341).

5. The automatically compensating displacement type flexible anti-fall beam device according to claim 1, characterized in that: The side plate (322) installed on the connecting base plate (321) at the end of the pier (5) is side plate A (322a), and the guide groove of side plate A (322a) is set in a direction perpendicular to the connecting base plate (321); the side plate (322) installed on the connecting base plate (321) at the end of the box girder (4) is side plate B (322b), and the guide groove of side plate B (322b) is set in a direction parallel to the connecting base plate (321).

6. The automatically compensating displacement type flexible anti-fall beam device according to claim 1, characterized in that: The cable body (1) is a composite protective cable body, which includes steel strands (11), isolation frames (12), and fastening straps (13). The isolation frames (12) are provided with steel strand positioning holes (121), the steel strands (11) are installed in the steel strand positioning holes (121), and the fastening straps (13) are tightly wrapped around the steel strands (11) and the isolation frames (12).

7. The automatically compensating displacement type flexible anti-fall beam device according to claim 6, characterized in that: The fastening band (13) is also wrapped with an outer protective sleeve (14); the steel strands (11) are arranged in single, double or multiple parallel rows.

8. The automatically compensating displacement type flexible anti-fall beam device according to claim 6, characterized in that: The anchoring assembly (2) includes an energy-absorbing bracket (21), an energy-absorbing sleeve (22), and a compression sleeve (23). The energy-absorbing bracket (21) has a threaded hole (211) on the outer side and a light hole in the middle at one end, and a steel strand hole (212) corresponding to the steel strand (11) of the cable body (1) at the other end. The threaded hole (211) of the energy-absorbing bracket (21) is connected to the single ear plate (31) by a thread. The energy-absorbing sleeve (22) is installed in the light hole of the energy-absorbing bracket (21). The energy-absorbing sleeve (22) has an inner hole at one end and a small hole for the steel strand (11) to pass through at the other end. The compression sleeve (23) is installed in the inner hole of the energy-absorbing sleeve (22), and the compression sleeve (23) is respectively compressed and anchored to the end of the steel strand (11), and anti-corrosion material is filled in the gap around the compression sleeve (23).

9. The automatically compensating displacement type flexible anti-fall beam device according to claim 8, characterized in that: The energy-absorbing sleeve (22) has elastic steel plates (221) with steel strand perforations attached to the bottom end of its inner hole and the bottom end of the energy-absorbing sleeve (22).

10. The automatically compensating displacement type flexible anti-fall beam device according to claim 8, characterized in that: The anchoring assembly (2) also includes an energy-absorbing spring (24); one end of the energy-absorbing spring (24) is in close contact with the end face of the extrusion sleeve (23), and the other end of the energy-absorbing spring (24) is in close contact with the bottom end face of the light hole of the energy-absorbing support (21).

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