Anti-abrasion device for fork-shaped lug plate sling connecting piece of suspension bridge

Abstract

The utility model discloses an anti-wear device for a fork-shaped lug plate sling connecting piece of a suspension bridge, which is mounted between a fork-shaped upper lug plate and a fork-shaped lower lug plate of the fork-shaped lug plate sling connecting piece and comprises a bulb-shaped push rod, a spring sleeve, a thrust spring and a saddle type clamping plate, the ball-head-shaped push rod and the spring sleeve are telescopically connected into a whole, a ball head of the ball-head-shaped push rod is matched with the spherical clamping groove in the upper lug plate, and an annular boss of the spring sleeve is matched with the sliding groove in the side wall of the saddle type clamping plate in the lower lug plate. When the sling connecting piece rotates, the sling connecting piece can adapt to rotation, friction between the upper lug plate and the lower lug plate of the connecting piece during rotation is reduced, and damage to components is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering and relates to an anti-wear device for a fork-shaped ear plate sling cable connecting piece of a suspension bridge. Background Art

[0002] The earliest large-span cable-based bridge built in my country has been in operation for more than 20 years. The bridge industry has gained a deeper understanding of the construction and operation of cable-based bridges. A series of industry challenges related to structural safety, applicability and durability have become increasingly prominent, especially for suspension bridge cable systems, which require responsible industry pioneers to pool the wisdom of the public to solve them.

[0003] Cable bridge structures such as suspension bridges are bridge structures that use cables such as main cables and hangers as the main load-bearing or force-transmitting components. Since the cables have ultra-high tensile strength and low deadweight, they can give full play to their tensile properties and have super strong spanning capacity, which increases the proportion of such bridges in the large-span bridges that have been built or are under construction. However, during the operation of bridge structures, due to the influence of various factors such as environmental erosion, material aging, long-term effects of loads, and sudden disasters, their structural damage continues to accumulate and their resistance continues to weaken, resulting in a decrease in their ability to resist natural disasters, affecting the safe service life of the bridge.

[0004] As an important structure of the cable system of a suspension bridge, the cable connector transfers the structural dead load and vehicle live load to the main cable. It is composed of cable clamps, pins, shock absorbers, anchor shafts, anchor plates, etc. However, the anchor ends of some cables on the bridge have also experienced deadlock, pin wear, and rust and water precipitation.

[0005] As a more important part of the suspension bridge, it is necessary to conduct damage research on the suspension bridge cable connector, which can provide important scientific basis for the maintenance of the suspension bridge cable system and has great engineering value. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an anti-wear device for a fork-shaped ear plate sling connector of a suspension bridge to solve the problems of deflection wear of the sling connector and the like.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A wear-proof device for a forked ear plate sling connecting piece of a suspension bridge, the forked ear plate sling connecting piece comprises a forked upper ear plate and a lower ear plate, the lower ear plate is forked in the forked upper ear plate and the two are connected by a pin shaft, the wear-proof device is arranged between the forked upper ear plate and the lower ear plate, and comprises a ball-shaped push rod, a spring sleeve, a thrust spring, and a saddle-type clamping plate;

[0009] The ball-head push rod comprises an integrated ball head and a push rod, the spring sleeve comprises a cylinder and an inlet end and a sealing end at both ends thereof, and the outer wall of the sealing end is a ring groove and a ring boss in sequence; the push rod coaxially passes through the inlet end, the push rod end is limited in the cylinder and cooperates with the thrust spring in the cylinder to realize the axial extension and contraction of the ball-head push rod relative to the spring sleeve;

[0010] The saddle-type clamping plate opens downward and is clamped on the lower ear plate. The two side plates of the saddle-type clamping plate are respectively opposite to the two inner walls of the ear plates of the fork-shaped upper ear plate. The outer walls of the two side plates are provided with sliding grooves, and the inner walls of the two ear plates are correspondingly installed with the slot parts; the ball head push rod and the spring sleeve are arranged between the side plate and the opposite ear plate, and the ball head is arranged in the ball head slot on the slot part, and the annular boss is arranged in the sliding groove.

[0011] The utility model also includes the following technical features:

[0012] Specifically, the outer wall of the push rod end of the ball-shaped push rod is provided with an annular protrusion I and an annular protrusion II in sequence, the outer diameters of the annular protrusion I and the annular protrusion II are both larger than the caliber of the inlet end, and the caliber of the inlet end is smaller than the inner diameter of the cylinder, so as to limit the end of the push rod inside the cylinder; the annular protrusion I and the annular protrusion II are close to the inner wall of the cylinder and can move axially along the inner wall of the cylinder; there is a spring groove between the annular protrusion I and the annular protrusion II.

[0013] Specifically, an inlet end groove is provided on the inner wall of the end surface of the inlet end, and a limiting protrusion is provided at the groove opening; a sealing end groove is provided on the inner wall of the end surface of the sealing end, and a limiting protrusion is provided at the groove opening.

[0014] Specifically, the thrust spring includes a thrust spring I and a thrust spring II, wherein one end of the thrust spring I is arranged in the groove at the inlet end and is limited by a limiting protrusion, and the other end is arranged in the spring groove and is limited by an annular protrusion I; one end of the thrust spring II is arranged in the spring groove and is limited by annular protrusion II, and the other end is arranged in the groove at the sealing end and is limited by a limiting protrusion.

[0015] Specifically, the sliding grooves on the outer wall of the saddle-type clamping plate side plate are arranged transversely, and their cross-sections are T-shaped. The annular grooves and annular bosses on the outer wall of the sealing end are correspondingly arranged in the sliding grooves with T-shaped cross-sections, so that the spring sleeve can slide transversely while limiting its axial position.

[0016] Specifically, the slot component includes a slot plate and a ball head slot opened thereon, the ball head slot is arranged in an arc shape, which can limit the axial position of the ball head push rod, and the ball head can rotate in the ball head slot or move along the arc track of the ball head slot.

[0017] Specifically, the saddle-type clamping plate and the lower ear plate are connected by anchoring with steel nails.

[0018] Specifically, the slot member is connected to the fork-shaped upper ear plate by anchoring with steel nails.

[0019] Compared with the prior art, the utility model has the following technical effects:

[0020] The utility model is installed on the upper and lower ear plates of the sling connecting piece, is simple to install, convenient to replace and disassemble, can effectively reduce the deflection problem of the fork-shaped ear plate, makes the friction end push away and the remote end approach, and can adapt to the rotation of the connecting piece later.

[0021] The thrust spring of the utility model is divided into two sections. When compressed, one section of the spring applies thrust and the other section of the spring applies pressure. The same is true when extended. The spring elastic force can be utilized to a greater extent, reducing the deflection wear problem.

[0022] The ball head of the ball-shaped push rod of the utility model cooperates with the spherical groove, and the annular boss of the spring sleeve cooperates with the sliding groove. When the sling connecting piece rotates, it can adapt to the rotation, reduce the friction of the upper and lower ear plates of the connecting piece during rotation, and reduce component damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a forked upper ear plate, a lower ear plate and an anti-wear device.

[0024] Figure 2 It is a cross-sectional view of the anti-wear device.

[0025] Figure 3 It is a schematic diagram of the anti-wear device joint.

[0026] Figure 4 This is a schematic diagram of a saddle-type pallet.

[0027] Figure 5 Schematic diagram of a ball-head putter.

[0028] Figure 6 It is a schematic diagram of a spring sleeve.

[0029] Figure 7 It is a cross-sectional view of the spring sleeve.

[0030] Figure 8 It is a schematic diagram of a slot component and a ball head slot.

[0031] The meaning of each number in the figure is:

[0032] 100. fork-shaped upper ear plate, 200. lower ear plate; 1. ball-shaped push rod, 2. spring sleeve, 3. thrust spring, 4. saddle-type clamping plate, 5. clamping groove; 11. ball head, 12. push rod, 13. annular protrusion I, 14. annular protrusion II, 15. spring groove; 21. cylinder, 22. inlet end, 23. sealing end, 24. annular groove, 25. annular boss, 221. inlet end groove, 231. sealing end groove; 41. sliding groove, 51. ball head clamping groove, 52. clamping groove plate. DETAILED DESCRIPTION

[0033] The utility model provides a wear-proof device for a forked ear plate sling connector of a suspension bridge, which solves the problem of deflection wear between the upper ear plate and the lower ear plate of the sling connector. Due to the manufacturing process of the sling itself and the reasons for the transportation and loading of the sling, the factory sets a 2° to 4° twisting process in the process of sling wire weaving, and the twisted steel wire is spiral; this causes the sling connector to produce a deflection phenomenon after installation, thereby causing the forked upper ear plate and the lower ear plate to have a deflection angle, and the bridge deck is open to traffic, the atmosphere and other reasons drive the sling connector to rotate, thereby causing the problem of rotation wear of the forked ear plate of the sling connector. Wear and damage will cause changes in the original bridge design structure, which may lead to local stress concentration, causing damage to the sling connector and reducing the service life of the component. The wear-proof device for the sling connector of the utility model can reduce the deflection wear phenomenon of the forked ear plate, thereby reducing the damage to the sling connector and increasing the service life of the component.

[0034] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0035] Embodiment 1:

[0036] like Figures 1 to 8 As shown, this embodiment provides an anti-wear device for a forked ear plate sling connector of a suspension bridge, wherein the forked ear plate sling connector comprises a forked upper ear plate 100 and a lower ear plate 200, wherein the lower ear plate 200 is forked in the forked upper ear plate 100 and the two are connected by a pin shaft, and is characterized in that the anti-wear device is arranged between the forked upper ear plate 100 and the lower ear plate 200, and comprises a ball head push rod 1, a spring sleeve 2, a thrust spring 3, and a saddle type clamping plate 4.

[0037] The ball-head push rod 1 includes an integrated ball head 11 and a push rod 12, and the spring sleeve 2 includes a cylinder 21 and an inlet end 22 and a sealing end 23 at both ends thereof, and the outer wall of the sealing end 23 is respectively provided with an annular groove 24 and an annular boss 25; the push rod 12 coaxially passes through the inlet end 22, and the end of the push rod 12 is limited in the cylinder 21 and cooperates with the thrust spring 3 in the cylinder 21 to realize the axial extension and contraction of the ball-head push rod 1 relative to the spring sleeve 2.

[0038] The saddle-type clamping plate 4 opens downward and is clamped on the lower ear plate 200. The two side plates of the saddle-type clamping plate 4 are respectively opposite to the two inner walls of the ear plates of the fork-shaped upper ear plate 100. The outer walls of the two side plates are provided with sliding grooves 41, and the inner walls of the two ear plates are correspondingly installed with the slot parts 5; the ball head push rod 1 and the spring sleeve 2 are arranged between the side plate and the opposite ear plate, and the ball head 11 is arranged in the ball head slot 51 on the slot part 5, and the annular boss 25 is arranged in the sliding groove 41.

[0039] The outer wall of the end of the push rod 12 of the ball-headed push rod 1 is provided with an annular protrusion I13 and an annular protrusion II14 in sequence. The outer diameters of the annular protrusion I13 and the annular protrusion II13 are both larger than the caliber of the inlet end 22, and the caliber of the inlet end 22 is smaller than the inner diameter of the cylinder 21, so as to limit the end of the push rod 12 in the cylinder 21; the annular protrusion I13 and the annular protrusion II14 are tightly attached to the inner wall of the cylinder 21 and can move axially along the inner wall of the cylinder 21; there is a spring groove 15 between the annular protrusion I13 and the annular protrusion II14.

[0040] An inlet end groove 221 is provided on the inner wall of the end surface of the inlet end 22 and a limiting protrusion is provided at the groove opening. A sealing end groove 231 is provided on the inner wall of the end surface of the sealing end 23 and a limiting protrusion is provided at the groove opening.

[0041] The thrust spring 3 includes a thrust spring I and a thrust spring II, wherein one end of the thrust spring I is arranged in the inlet end groove 221 and is limited by a limiting protrusion, and the other end is arranged in the spring groove 15 and is limited by an annular protrusion I13; one end of the thrust spring II is arranged in the spring groove 15 and is limited by an annular protrusion II14, and the other end is arranged in the sealing end groove 231 and is limited by a limiting protrusion.

[0042] The sliding groove 41 of the outer wall of the side plate of the saddle-type card plate 4 is arranged in the transverse direction, and its cross section is T-shaped, such as Figure 2 As shown, the annular groove 24 and the annular boss 25 on the outer wall of the sealing end 23 are correspondingly arranged in the sliding groove 41 with a T-shaped cross section, so that the spring sleeve 2 can slide in the lateral direction while limiting its axial position. The sliding groove facilitates the follow-up of the wear device when the sling connector rotates, and there is enough sliding space.

[0043] The sliding groove of the outer wall of the side plate is open at the end surface of the side plate, so that the annular groove and the annular boss can be installed in the sliding groove, and the opening can be sealed after installation.

[0044] The slot member 5 includes a slot plate 52 and a ball head slot 51 formed thereon. The ball head slot 51 is arranged in an arc shape and can limit the axial position of the ball head push rod 1. The ball head 11 can rotate in the ball head slot 51 or move along the arc track of the ball head slot 51. The ball head design can reduce the friction caused by the swing of the sling connector.

[0045] The end surface of the ball head slot is open so that the ball head can be installed therein, and the opening can be sealed after the ball head is installed.

[0046] The spring sleeve is formed by welding two half sleeves together along the axial section. After the two half sleeves are installed into the cylinder body at the end of the push rod, the two half sleeves are butt-jointed and then welded.

[0047] The saddle-type clamping plate 4 and the lower ear plate 200 are connected by anchoring with steel nails.

[0048] The slot member 5 is connected to the fork-shaped upper ear plate 100 by anchoring with steel nails.

[0049] The thrust spring is made of high-quality alloy spring steel; the ball-shaped push rod, spring sleeve, and saddle-type clamping plate are all made of corrosion-resistant aluminum alloy metal.

[0050] The assembly method of the anti-wear device of the fork-shaped ear plate sling connector of the suspension bridge is as follows:

[0051] 1. Install the spherical head push rod into the spring sleeve, and set one of the thrust springs in the spring groove of the spherical head push rod and the sealing end groove of the spring sleeve to connect them.

[0052] 2. Set another thrust spring in the spring groove of the spherical head push rod and the inlet end groove of the spring sleeve, so that the spherical head push rod and the spring sleeve are connected into a whole, namely, a spring thrust device.

[0053] 3. Install the saddle-type pallet on the lower ear plate and the spherical slot on the inner side of the upper ear plate. Both are connected by steel nail anchors.

[0054] 4. The annular boss at the rear end of the spring sleeve is arranged in the sliding groove of the saddle-type clamping plate, so that the spring thrust device is connected to the lower ear plate of the sling connector as a whole, and there is enough sliding space.

[0055] 5. Connect the ball head of the spherical head push rod to the ball head slot of the fork-shaped upper ear plate of the sling connector, so that the devices are linked as one, forming an anti-wear device for the sling connector.

[0056] The working principle of the utility model is as follows: a spring thrust device, namely a ball-shaped push rod, a spring sleeve and a thrust spring, is installed between the upper and lower ear plates of a fork-shaped ear plate, and the deflection wear problem of the sling connecting piece is reduced through the thrust of the two-stage spring and the ball head slot and the sliding groove. The ball head at one end can adapt to the friction during rotation, and the sliding groove at the other end is simultaneously arranged to give the component sufficient deformation and sliding space. The two-stage thrust spring, when the device is compressed, one spring applies thrust and the other spring applies pressure. The same is true when it is extended. Through pushing and stretching, the deflection angle of the sling connecting piece is reduced while adapting to the rotation.

[0057] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0058] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0059] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A wear-proof device for a forked ear plate sling connecting piece of a suspension bridge, the forked ear plate sling connecting piece comprising a forked upper ear plate (100) and a lower ear plate (200), the lower ear plate (200) being forked in the forked upper ear plate (100) and the two being connected by a pin shaft, characterized in that: The anti-wear device is arranged between the fork-shaped upper ear plate (100) and the lower ear plate (200), and comprises a ball-shaped push rod (1), a spring sleeve (2), a thrust spring (3), and a saddle-type clamping plate (4); The ball-head push rod (1) comprises an integrated ball head (11) and a push rod (12); the spring sleeve (2) comprises a cylinder (21) and an inlet end (22) and a sealing end (23) at both ends thereof; the outer wall of the sealing end (23) is provided with an annular groove (24) and an annular boss (25) in sequence; the push rod (12) coaxially passes through the inlet end (22); the end of the push rod (12) is limited in the cylinder (21) and cooperates with the thrust spring (3) in the cylinder (21) to realize axial extension and retraction of the ball-head push rod (1) relative to the spring sleeve (2); The saddle-type clamping plate (4) opens downward and is clamped on the lower ear plate (200). The two side plates of the saddle-type clamping plate (4) are respectively opposite to the inner walls of the two ear plates of the fork-shaped upper ear plate (100). The outer walls of the two side plates are provided with sliding grooves (41). The inner walls of the two ear plates are correspondingly provided with the slot parts (5). The ball head-shaped push rod (1) and the spring sleeve (2) are arranged between the side plate and the ear plate opposite thereto, and the ball head (11) is arranged in the ball head slot (51) on the slot part (5), and the annular boss (25) is arranged in the sliding groove (41).

2. The anti-wear device for the fork-shaped ear plate sling connector of a suspension bridge according to claim 1, characterized in that: The outer wall of the end of the push rod (12) of the ball-shaped push rod (1) is provided with an annular protrusion I (13) and an annular protrusion II (14) in sequence, the outer diameters of the annular protrusion I (13) and the annular protrusion II (14) are both larger than the diameter of the inlet end (22), and the diameter of the inlet end (22) is smaller than the inner diameter of the cylinder (21), so as to limit the end of the push rod (12) in the cylinder (21); the annular protrusion I (13) and the annular protrusion II (14) are closely attached to the inner wall of the cylinder (21) and can move axially along the inner wall of the cylinder (21); and a spring groove (15) is provided between the annular protrusion I (13) and the annular protrusion II (14).

3. The anti-wear device for the fork-shaped ear plate sling connector of a suspension bridge according to claim 2, characterized in that: The inner wall of the end surface of the inlet end (22) is provided with an inlet end groove (221) and a limiting protrusion is provided at the groove opening, and the inner wall of the end surface of the sealing end (23) is provided with a sealing end groove (231) and a limiting protrusion is provided at the groove opening.

4. The anti-wear device for the fork-shaped ear plate sling connecting piece of a suspension bridge according to claim 3, characterized in that: The thrust spring (3) comprises a thrust spring I and a thrust spring II. One end of the thrust spring I is arranged in the inlet end groove (221) and is limited by a limiting protrusion, and the other end is arranged in the spring groove (15) and is limited by an annular protrusion I (13). One end of the thrust spring II is arranged in the spring groove (15) and is limited by an annular protrusion II (14), and the other end is arranged in the sealing end groove (231) and is limited by a limiting protrusion.

5. The anti-wear device for the fork-shaped ear plate sling connector of a suspension bridge according to claim 1, characterized in that: The sliding groove (41) on the outer wall of the side plate of the saddle-type clamping plate (4) is arranged in the transverse direction and has a T-shaped cross section. The annular groove (24) and the annular boss (25) on the outer wall of the sealing end (23) are correspondingly arranged in the sliding groove (41) with the T-shaped cross section, so that the spring sleeve (2) can slide in the transverse direction while limiting its axial position.

6. The anti-wear device for the fork-shaped ear plate sling connector of a suspension bridge according to claim 1, characterized in that: The slot member (5) comprises a slot plate (52) and a ball head slot (51) formed thereon. The ball head slot (51) is arranged in an arc shape and can limit the axial position of the ball head push rod (1). The ball head (11) can rotate in the ball head slot (51) or move along the arc track of the ball head slot (51).

7. The anti-wear device for the fork-shaped ear plate sling connecting piece of a suspension bridge according to claim 1, characterized in that: The saddle-type clamping plate (4) and the lower ear plate (200) are connected by anchoring with steel nails.

8. The anti-wear device for the fork-shaped ear plate sling connecting piece of a suspension bridge according to claim 1, characterized in that: The slot member (5) and the fork-shaped upper ear plate (100) are connected by anchoring with steel nails.

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