Bridge hollow pier and safety ladder connecting device

Abstract

The utility model discloses a connecting device for a bridge hollow pier and a safety ladder stand, and belongs to the technical field of bridge construction, one end of a connecting rod is movably connected with an embedded part, the embedded part is connected with a bridge pier, the connecting rod comprises a limiting hole, a plug pin is embedded in the limiting hole in a matched mode, and the other end of the connecting rod is movably connected with a fixing part; the fixing part comprises a supporting plate below the connecting rod and a fixing part above the connecting rod, the fixing part is detachably connected to the supporting plate, the supporting plate is provided with a lower arc face along the center line, a wavy long-strip-shaped hole is formed in the center line of the lower arc face and matched with the lower end of the plug pin, and the bolt penetrates through the fastening device and is matched with the plug pin to further fasten the connecting rod. The position of the connecting rod is fixed through friction force between the parts, the safety ladder stand is fixed, meanwhile, installation is easy, disassembly is convenient, the safety ladder stand can be repeatedly used, the construction progress can be accelerated, resources and cost are saved, stability of the safety ladder stand is better guaranteed, and safety of constructors is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge construction technical field, and specifically relates to a bridge hollow pier and safety ladder connection device. BACKGROUND

[0002] At present, in the bridge hollow pier column construction, the pier column height is higher, and the height is generally more than 40 meters. The bridge hollow pier is constructed in segments, and a safety ladder is usually matched and erected as a passageway for the construction personnel to go up and down the pier column, until the pier column construction is completed. The safety ladder usually has the problems of light weight and poor stability, and the safety ladder usually does not have a matched stable facility. When the ladder is erected at a low height, a steel wire rope is usually used to fix the anchor or the pier column, and when the ladder is erected at a high height, the soft connection fixing mode is not suitable, and the ladder cannot be effectively stabilized. Hard connection measures such as wall attachment connectors are needed to fix the safety ladder, and the hard connection fixing mode is usually complicated to install and inconvenient to disassemble. When the pier construction reaches a certain height, high-altitude operation is difficult and dangerous.

[0003] According to the search, the invention with the publication number CN116181216A provides a pier and safety ladder connection device and construction method. The device includes a pre-buried climbing cone, a wall attachment connecting seat, a locking bolt and a connecting piece. The wall attachment connecting seat includes a U-shaped connecting plate and a damping support. The locking bolt passes through the U-shaped connecting plate and extends into the pre-buried climbing cone. The connecting piece includes a vertical adjusting component arranged at the bottom of the damping support and two horizontal adjusting components arranged on the vertical adjusting component, and a connecting rod arranged on the horizontal adjusting component. The method includes the following steps: 1. installation of the pre-buried climbing cone in the pier; 2. installation of the pier formwork; 3. pier pouring and formwork removal; 4. installation of the pier and safety ladder connecting piece; and 5. connection of the pier and safety ladder.

[0004] However, the problem of complicated disassembly of the subsequent connecting piece has not been solved, and the connection of the connecting piece and the wall attachment connecting piece is difficult. The construction personnel need to work at a high altitude, which is low in construction efficiency and slow in progress. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the inventors have summarized and obtained the technical scheme of the present application through practice. The utility model discloses a bridge hollow pier and safety ladder connection device.

[0006] A bridge hollow pier and safety ladder connection device, the connection device includes a pre-buried piece, a connecting rod and a fixing component.

[0007] One end of the connecting rod is movably connected to the pre-buried piece, and the pre-buried piece is connected to the pier. The connecting rod includes a limiting hole, and a bolt is embedded in the limiting hole. The other end of the connecting rod is movably connected to the fixing component.

[0008] The fixed part comprises a supporting plate below the connecting rod and a fixing part above the connecting rod, the fixing part being detachably connected to the supporting plate, the supporting plate being provided with a lower arc surface along a center line, the lower arc surface being provided with a wavy long hole at the center line, and the wavy long hole being matched with the bolt; the connecting rod is connected to the pre-buried part, and no additional punching operation is needed on the pier, so that the integrity of the pier structure is ensured, and the wavy long hole limits the forward and backward displacement of the bolt, further fastening the connecting rod.

[0009] The limiting hole extends into the safe ladder part at one end of the connecting rod away from the pier, the limiting hole completely penetrating the connecting rod, the limiting hole being detachably connected with the bolt, the matching part of the bolt and the limiting hole being a hemispherical surface, the bolt comprising a lower end through slot, the through slot being matched with a rotatable sliding piece, and the mutually coinciding surfaces of the sliding pieces being provided with protrusions; the bolt is used to preliminarily fix the connecting rod, the bolt being completely embedded in the connecting rod to avoid the movement of the bolt caused by the pulling action of the construction personnel, and after complete insertion, the rotating sliding piece is lowered under the action of gravity, and the protrusions prevent the sliding pieces from completely coinciding, preventing the bolt from falling off due to vibration.

[0010] The supporting plate is in the shape of "L" in cross section, the lower end of the "L" shape being welded to the side of the safe ladder close to the pier, the supporting plate comprising a lower arc surface at the center line of the supporting plate, the lower arc surface being matched with the outer surface of the connecting rod, the lower arc surface being provided with a wavy long hole, the wavy long hole being located at the center line of the lower arc surface, the wavy long hole being provided with a first long hole and a second long hole symmetrically along the center line, and the long holes completely penetrating the supporting plate.

[0011] Further, the connecting rod is provided with multiple sections, and the sections of the connecting rod are detachably threadedly connected; the combination of the multiple sections of the connecting rod is suitable for the distance between different piers and safe ladders, and improves the applicability of the device.

[0012] Further, the fixing part comprises an upper arc surface at the center line along the width direction of the fixing part, the upper arc surface being matched with the outer surface of the connecting rod, and the center line of the upper arc surface being provided with a fixing hole symmetrically.

[0013] Further, the fixing hole is matched with the upper end of a double-nut bolt, the other end of the double-nut bolt being matched with a long hole, and the double-nut bolt penetrating the fixing hole and the first long hole; the bolt is used to connect the fixing part and the supporting plate, so that the upper and lower arc surfaces are closely matched with the connecting rod, the connecting rod is fastened, and the supporting plate is welded to the safe ladder, so that the connecting rod and the safe ladder form an integral whole.

[0014] Further, a cushion block is arranged between the fixing part and the supporting plate, the cushion block, the fixing part and the supporting plate cooperating to form a cavity, and the connecting rod penetrating the cavity; the complete penetration of the cavity ensures the maximum contact area of the connecting rod and the fixed part, and ensures the fixing effect; the cushion block arranged at the connecting part can reduce vibration and avoid the loosening of the bolt.

[0015] Further, the embedded part is a straight threaded sleeve, and the embedded part away from the pier end is a horn-shaped opening; the horn-shaped opening facilitates butt joint of the connecting rod.

[0016] The outer surfaces of the embedded part, the connecting rod, the fixing part and the supporting plate are coated with colored rust-proof paint; the bright color can improve the attention of workers, and the rust-proof paint prevents the device from rusting and affecting the connecting effect.

[0017] Compared with the prior art, the application can obtain the following technical effects:

[0018] The safety climbing ladder is welded with a supporting plate at a corresponding position close to the pier side, the connecting rod is placed on the supporting plate, and a bolt is installed, the bolt penetrates the connecting rod and the supporting plate, a sliding sheet is arranged on the bolt, the connecting rod is preliminarily fixed through the bolt, the bolt is completely embedded in the connecting rod to avoid that the bolt is moved by the pulling action of the construction personnel, after installation, the sliding sheet is lowered under the action of gravity, simultaneously preventing the sliding sheet from completely coinciding to prevent the bolt from falling off due to vibration, the bolt cooperates with the wave-shaped long hole at the lower arc of the supporting plate to further limit the movement of the connecting rod, preliminary fixation is realized, then the through hole of the cushion block, the fixing hole of the fixing part and the long hole on both sides of the arc surface of the supporting plate are aligned, the double-nut bolt is inserted and fastened, the position of the connecting rod is fixed through the friction force between the components, the safety climbing ladder is fixed, meanwhile, installation is simple, disassembly is convenient, reuse is possible, the construction progress can be accelerated, resources and costs can be saved, the stability of the safety climbing ladder can be better ensured, and the safety of the construction personnel can be ensured.

[0019] When the safety climbing ladder is installed, the connecting rod with a corresponding length is connected according to the distance between the safety climbing ladder and the pier, and the supporting plate is welded at a corresponding position close to the pier side of the safety climbing ladder, after completion, the construction personnel stand on the safety climbing ladder to connect and fasten the connecting rod and the embedded part of the pier, the workers do not need to put their bodies out of the safety climbing ladder to butt joint the embedded part, high-altitude environment operation is avoided, and the personal safety of the workers is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a fixed part structure diagram of the present application;

[0022] Figure 2 is a side view of the fixed part of the present application;

[0023] Figure 3 is a front view of the fixed part of the present application;

[0024] Figure 4 is the fixed component explosion structure diagram of the utility model;

[0025] Figure 5 is the bottom plate structure diagram of the utility model.

[0026] In the drawing: 1. embedded part, 2. connecting rod, 201. limit hole, 202. bolt, 3. supporting plate, 301. lower arc surface, 302. first long slot, 303. second long slot, 304. wave-shaped long slot, 4. fixed component, 401. upper arc surface, 402. fixed hole, 5. double-nut bolt, 6. cushion block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the application is further described in detail below with examples. It should be understood that the specific examples described here are only used to explain the application, and not to limit the application.

[0028] The application principle of the utility model is further described below in combination with the drawings and specific examples.

[0029] Example 1

[0030] As shown in the drawing: Figures 1-5

[0031] A bridge hollow pier and safety ladder connecting device, characterized in that: the connecting device comprises an embedded part 1, a connecting rod 2 and a fixed component;

[0032] One end of the connecting rod 2 movably connects the embedded part 1, the embedded part 1 is connected with the pier, the connecting rod 2 comprises a limit hole 201, the limit hole 201 is embedded with a bolt 202, the other end of the connecting rod 2 movably connects the fixed component;

[0033] The fixed component comprises a supporting plate 3 below the connecting rod 2 and a fixed component 4 above the connecting rod 2, the fixed component 4 is detachably connected to the supporting plate 3, the supporting plate 3 is provided with a lower arc surface 301 along the center line, the wave-shaped long slot 304 is provided at the center line of the lower arc surface 301, and the wave-shaped long slot 304 is matched with the bolt 202.

[0034] The limit hole 201 is located at one end of the connecting rod 2 away from the pier and extends into the safety ladder part, the limit hole 201 completely penetrates the connecting rod 2, the limit hole 201 is detachably connected with the bolt 202, and the contact between the bolt 202 and the limit hole 201 is a hemispherical surface.

[0035] The bolt 202 comprises a lower end through slot, a group of rotatable sliding pieces 203 are matched in the through slot, and the group of sliding pieces 203 are provided with protrusions on the mutually coinciding surfaces.

[0036] ​The connecting rod 2 is provided with multiple sections, and each section of the connecting rod 2 is detachably connected through threads.

[0037] The cross section of the supporting plate 3 is in the shape of "L", and the lower end of the "L" shape is welded with a safe ladder close to the side of the pier. The lower curved surface 301 is matched with the outer surface of the connecting rod 2. The first long hole 302 and the second long hole 303 are symmetrically provided along the center line on both sides of the supporting plate 3, and the long holes completely penetrate the supporting plate 3.

[0038] The fixing member 4 includes an upper curved surface 401 along the center line in the width direction of the fixing member 4, and the upper curved surface 401 is matched with the outer surface of the connecting rod 2. The fixing holes 402 are symmetrically provided on both sides of the center line of the upper curved surface 401.

[0039] One side of the fixing hole 402 is matched with the upper end of the double nut bolt 5, and the other end of the double nut bolt 5 is matched with a long hole. The double nut bolt 5 penetrates the fixing hole 402 and the first long hole.

[0040] The fixing member 4 and the supporting plate 3 are provided with the cushion block 6, and the through hole is provided at the center position of the cushion block 6. The fixing member 4, the supporting plate 3 and the cushion block 6 are matched to form a cavity, and the connecting rod 2 extends into the cavity and penetrates.

[0041] The embedded part 1 is a straight thread sleeve, the end of the embedded part 1 away from the pier is a trumpet-shaped opening, and the embedded part 1 is welded on the steel bars in the pier.

[0042] The outer surfaces of the embedded part 1, the connecting rod 2, the fixing member 4 and the supporting plate 3 are coated with colored anti-rust paint.

[0043] The embedded part 1 is welded and installed on the bridge pier reinforcement according to the corresponding position of the safety ladder before pouring the bridge pier. When the safety ladder is installed subsequently, the workers connect the connecting rod 2 of the corresponding length according to the distance between the safety ladder and the bridge pier, and weld the supporting plate 3 at the corresponding position near the bridge pier side of the safety ladder. After welding is completed, the construction personnel stand on the safety ladder to connect and fasten the connecting rod 2 with the bridge pier embedded part 1, and after confirming the fastening, place the connecting rod 2 on the supporting plate 3, and place the bolt 202 on the limiting hole 201 of the connecting rod 2. When the bolt 202 is placed, the lower end of the bolt 202 is first pushed to be parallel to the bolt, and then placed in the limiting hole 201. The fitting part of the bolt 202 and the limiting hole 201 is a hemispherical surface, so that the bolt 202 is completely embedded in the connecting rod 2, avoiding the movement of the bolt caused by the pulling action of the construction personnel. After complete insertion, the bolt 202 penetrates the limiting hole 201 and the supporting plate 3, and the slide is lowered under the action of gravity, and the protrusion on the slide prevents the slide from completely overlapping, preventing the bolt 202 from falling off due to vibration. At the same time, the wave-shaped long hole 304 on the bottom plate 3 further limits the movement range of the bolt 202, fixes the connecting rod, and then aligns the through hole of the cushion block 6, the fixed hole 402 of the fixing part 4 and the long hole on both sides of the arc surface of the supporting plate 3. The double-nut bolt 5 is inserted and fastened, and the connecting rod 2 is completely inserted into the cavity. The bolt 202 limits the movement of the connecting rod 2, and the fixing part 4 and the supporting plate 3 clamp and fix the connecting rod 2. After confirming that there is no looseness, the installation of the connecting device is completed.

[0044] Example 2

[0045] On the basis of example 1, when the bridge pier construction is completed, the workers loosen the upper and lower nuts of the double-nut bolt 5, loosen the connection between the fixing part 4 and the supporting plate 3, release the fastening of the connecting rod 2, push the lower end of the bolt 202 to be parallel to the direction of the bolt 202, and then push the bolt 202 out of the lower end to release the limitation of the connecting rod 2. Subsequently, the construction personnel hold the connecting rod 2 near the safety ladder end, release the connection between the connecting rod 2 and the embedded part 1 in the safety ladder, and recover the connecting rod 2, completing the disassembly of the connecting device.

[0046] Working principle: Before pouring the bridge pier, the embedded part 1 is welded and installed on the pier reinforcement at the corresponding position of the safety ladder, becoming an integral part of the pier. When installing the safety ladder, a connecting rod 2 of corresponding length is connected according to the distance between the safety ladder and the pier. At the same time, a support plate 3 is welded at the corresponding position on the side of the safety ladder closest to the pier, making the support plate 3 an integral part of the safety ladder. After welding, the construction personnel stand on the safety ladder to connect and tighten the connecting rod 2 to the embedded part 1 of the pier. After confirming that it is tightened, the connecting rod 2 is placed on the support plate 3, and a pin 202 is installed in the limiting hole 201 of the connecting rod 2. When installing the pin 202, first move the lower sliding piece of the pin 202 to be parallel to the pin, and then insert it into the limiting hole 201. The contact point between the pin 202 and the limiting hole 201 is a hemispherical surface, so that the pin 202 is completely embedded in the connecting rod 2. To prevent the pin from moving due to pulling or other actions by construction workers, after the pin 202 passes through the limiting hole 201 and the support plate 3, the sliding plate hangs down under the action of gravity. At the same time, the protrusion on the sliding plate prevents the sliding plate from completely overlapping, preventing the pin 202 from falling off due to vibration. Meanwhile, the wavy elongated hole 304 on the base plate 3 further restricts the movement range of the pin 202 and fixes the connecting rod. Then, the through hole of the pad 6 is aligned with the fixing hole 402 of the fixing component 4 and the elongated holes on both sides of the arc surface of the support plate 3. The double nut bolt 6 is inserted and tightened to ensure that the connecting rod 2 completely passes through the cavity. The pin 202 restricts the movement of the connecting rod. At the same time, the fixing component 4 and the support plate 3 clamp and fix the connecting rod. The bolts further tighten the fixing rod and restrict its movement. The pad absorbs the impact to achieve the effect of shock absorption, preventing the bolts from loosening due to vibration and ensuring the stability of the safety ladder connection.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection device for a hollow bridge pier and a safety ladder, comprising a bridge pier, characterized in that: The connection device between the hollow bridge pier and the safety ladder includes embedded parts (1), connecting rods (2) and fixing components; One end of the connecting rod (2) is movably connected to the embedded part (1), the embedded part (1) is connected to the bridge pier, the connecting rod (2) includes a limiting hole (201), the limiting hole (201) is fitted with a pin (202), and the other end of the connecting rod (2) is movably connected to a fixing component; The fixing component includes a support plate (3) below the connecting rod (2) and a fixing member (4) above the connecting rod (2). The fixing member (4) is detachably connected to the support plate (3). The support plate (3) has a lower arc surface (301) along the center line. A wavy elongated hole (304) is opened at the center line of the lower arc surface (301). The wavy elongated hole (304) is fitted to the lower end of the pin (202).

2. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The limiting hole (201) is located at the end of the connecting rod (2) away from the pier and extends into the safety ladder part. The limiting hole (201) completely penetrates the connecting rod (2). The limiting hole (201) is detachably connected to a pin (202). The part where the pin (202) fits with the limiting hole (201) is a hemispherical surface.

3. The connection device between a hollow bridge pier and a safety ladder according to claim 2, characterized in that: The pin (202) includes a lower end through groove, and a set of rotatable slides (203) are fitted in the through groove. The overlapping surfaces of the set of slides (203) are provided with protrusions.

4. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The connecting rod (2) has multiple sections, and each section of the connecting rod (2) is detachably threaded together.

5. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The tray (3) has an "L" shaped cross section. A safety ladder is welded to the lower end of the "L" shape near the pier. The lower arc surface (301) is fitted with the outer surface of the connecting rod (2). The wavy elongated hole (304) is symmetrically provided with a first elongated hole (302) and a second elongated hole (303) on both sides of the center line. The elongated hole completely penetrates the tray (3).

6. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The fastener (4) includes an upper arc surface (401) at the center line along the width direction of the fastener (4), the upper arc surface (401) cooperates with the outer surface of the connecting rod (2), and fixing holes (402) are symmetrically opened on both sides of the center line of the upper arc surface (401).

7. The connection device between a hollow bridge pier and a safety ladder according to claim 6, characterized in that: The upper end of the fixing hole (402) on one side is fitted with a double nut bolt (5), and the other end of the double nut bolt (5) is fitted with a strip hole. The double nut bolt (5) passes through and connects the fixing hole (402) and the first strip hole.

8. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: A pad (6) is provided between the fixing member (4) and the support plate (3). A through hole is provided at the center of the pad (6). The pad (6), the fixing member (4) and the support plate (3) cooperate to form a cavity. The connecting rod (2) extends into the cavity and passes through it.

9. The connection device between a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The embedded part (1) is a straight threaded sleeve. The end of the embedded part (1) away from the pier is a flared mouth. The part of the embedded part (1) extending into the pier is welded to the pier reinforcement.

10. A connection device for a hollow bridge pier and a safety ladder according to claim 1, characterized in that: The outer surfaces of the embedded part (1), connecting rod (2), fixing part (4) and support plate (3) are all coated with colored anti-rust paint.

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