Detachable turnover bridge support pad stone bolt hole inner mold

Abstract

The utility model relates to detachable turnover bridge support pad stone bolt hole inner mould, including inner mould sleeve pipe, and set up in the rotation lever of inner mould sleeve pipe in, the inner mould inserts the preset position of support pad stone formwork, is fixed through external support, ensures the perpendicularity of axis, realizes the positioning, the sealing cover prevents the concrete from entering the inside of inner mould sleeve pipe, plays the anti -leakage pulp treatment, provides accurate hole space for the concrete pouring, the concrete flows into the convex mould cavity of metal half ring, forms the reverse recess after hardening, forms the rough interface naturally, satisfies the chisel roughness bonding requirement, when the formwork is removed, rotates the rotation lever and drives the fixed ring rotation, the fixed rod promotes the long rod to move to the center, through the linkage of inclined bar and hinged seat, forces two metal half rings to be close to synchronously, the long rod draws the baffle and contracts in the slide groove, the sliding block guide movement, the baffle separates from the concrete hole wall, the inner mould diameter reduces, thoroughly removes the bonding force with the concrete.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing technology, specifically to a detachable and reusable inner mold for the bolt holes of bridge bearing pad stones. Background Technology

[0002] In bridge construction, inner molds are usually pre-embedded during concrete pouring for bearing pad bolt holes to ensure accurate bolt hole positions and compliant dimensions. Traditional inner molds are mostly made of PVC pipes or wooden molds. In existing technologies, after the concrete solidifies, the inner mold is tightly bonded to the hole wall, and the hole wall needs to be roughened a second time to enhance the adhesion with the grout, which increases construction costs. Traditional inner molds are mostly for single use or deformed and scrapped after demolding and cannot be reused. Therefore, we need to provide detachable and reusable inner molds for bridge bearing pad bolt holes. Utility Model Content

[0003] The purpose of this utility model is to provide a detachable and reusable inner mold for the bolt holes of bridge bearing pad stones, so as to solve at least one technical problem in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detachable and reusable inner mold for the bolt holes of bridge bearing pad stones, comprising:

[0005] Inner mold sleeve, and a rotating rod set inside the inner mold sleeve;

[0006] The inner mold sleeve includes two metal semi-rings, one end of which is rotatably connected by the rotating rod; a notch is left between the other ends of the two metal semi-rings, and a baffle adapted to the notch is provided at the notch; the inner mold sleeve is provided with a pushing mechanism that moves the baffle to open or close the notch.

[0007] Preferably, a fixing seat is fixedly installed inside one end of each of the two metal semi-rings, and the rotating rod is rotatably installed inside the fixing seat.

[0008] Preferably, the pushing mechanism includes a fixed ring fixedly mounted on the surface of the rotating rod, a fixed rod hinged to one side of the fixed ring, a long rod fixedly mounted at one end of the fixed rod, and one end of the long rod fixedly mounted on the surface of the baffle.

[0009] More preferably, the pushing mechanism includes two fixed rings fixedly installed on the surface of the rotating rod, each of the two fixed rings having a fixed rod hinged to one side, each of the two fixed rods having a long rod fixedly installed at one end, and each of the two long rods having a long rod fixedly installed at one end on the surface of the baffle.

[0010] Preferably, the surface of the long rod is fitted with a pull element for the synchronous movement of the two metal semi-rings.

[0011] More preferably, the pulling member includes inclined rods hinged to the top and bottom of the long rod, and each of the two inclined rods has a hinge seat installed at the end away from the long rod. The two hinge seats are respectively fixedly installed on the inner wall of two metal semi-rings, and a synchronizing rod is fixedly installed between the adjacent sides of the two long rods.

[0012] Preferably, guide plates are fixedly installed on the inner walls of both metal semi-rings, and two sliders are integrally machined on both sides of the baffle. The guide plates have grooves inside for the sliders to slide.

[0013] Preferably, two limiting plates are provided on one side of the baffle, and the two limiting plates are respectively fixedly installed on the surfaces of two metal semi-rings, and the two limiting plates are used to limit the movement range of the baffle.

[0014] Preferably, a push rod is fixedly mounted on the surface of the rotating rod.

[0015] Preferably, the top of the inner mold sleeve is fitted with a sealing cap for placing concrete poured into the inner mold sleeve.

[0016] Preferably, it also includes a no-scraping component, which includes multiple punches integrally machined inside two metal semi-rings, and each of the multiple punches has a cavity inside.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The rotating rod of this utility model drives the fixed rod through the fixed ring. The fixed rod drives the long rod and the baffle to retract inward synchronously, realizing the overall radial shrinkage of the inner mold and separation from the concrete hole wall. The pre-made punch inside the metal semi-ring forms a hole wall groove when the concrete is poured. After hardening, it naturally forms a mechanical interlocking surface, eliminating the need for secondary roughening. The cavity reduces the weight and increases the elasticity of the punch, making demolding easier. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a perspective view of the propulsion mechanism of this utility model;

[0021] Figure 3 This is a perspective view of the pull component of this utility model;

[0022] Figure 4 This is a perspective view of the no-scraping component of this utility model;

[0023] Figure 5 This is a diagram showing the position of the fixing ring in this utility model.

[0024] Figure 6 This is a perspective view of the baffle of this utility model.

[0025] In the diagram: 1. Metal semi-ring; 2. Rotating rod; 3. Fixed seat; 4. Baffle; 5. Pushing mechanism; 51. Fixed ring; 52. Fixed rod; 53. Long rod; 50. Pulling component; 501. Diagonal rod; 502. Hinge seat; 6. Push rod; 7. Synchronizing rod; 8. Guide plate; 9. Slider; 10. Slide groove; 11. Sealing cover; 12. No-scraping component; 121. Punch; 122. Cavity; 13. Limiting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-6 This utility model provides a technical solution: a detachable and reusable inner mold for the bolt holes of bridge bearing pad stones, comprising:

[0028] Inner mold sleeve, and rotating rod 2 installed inside the inner mold sleeve;

[0029] The inner mold sleeve includes two metal semi-rings 1, and two fixed seats 3 are fixedly installed inside each of the two metal semi-rings 1. The surface of the rotating rod 2 is rotatably installed inside the four fixed seats 3. A baffle 4 is provided between the two metal semi-rings 1. A pushing mechanism 5 for moving the baffle 4 is provided inside the inner mold sleeve.

[0030] Specifically, the top sealing cap 11 prevents concrete from entering the inner mold sleeve, reducing cleaning workload. The rotating rod 2 drives the fixed rod 52 through the fixed ring 51. The fixed rod 52 drives the long rod 53 to retract synchronously with the baffle 4, realizing the overall radial shrinkage of the inner mold and separation from the concrete hole wall. The pre-fabricated punch 121 inside the metal semi-ring 1 forms a groove in the hole wall during concrete pouring. After hardening, it naturally forms a mechanical interlocking surface, eliminating the need for secondary roughening. The cavity 122 reduces weight and increases the elasticity of the punch 121, facilitating demolding. During construction, the detachable reusable support pad bolt hole design improves construction efficiency. The rotating rod 2 is located inside the four fixed seats 3. It can only rotate and cannot move vertically. The fixed rod 52 is L-shaped and is welded to the drive rod 53. The fixed rod 52 is rotatably connected to the fixed ring 51. When the rotating ring 51 rotates with the rotating rod 2, the rotating ring 51 will pull the fixed rod 52 to move and adjust. One end of the fixed rod 52 is fixedly installed with the long rod 53, thereby pulling the long rod 53 to move. When the long rod 53 is pulled, it does not move horizontally to the left, but moves obliquely at a certain angle. This process can cause the two oblique rods 501 on the surface of the long rod 52 to swing, thereby pulling the baffle 4 to move and adjust with the long rod 53.

[0031] The pushing mechanism 5 includes two fixed rings 51 fixedly installed on the surface of the rotating rod 2. Each of the two fixed rings 51 is hinged to a fixed rod 52 on one side. Each of the two fixed rods 52 is fixedly installed with a long rod 53 at one end. Each of the two long rods 53 is fixedly installed with one end on the surface of the baffle 4.

[0032] The surface of the long rod 53 is fitted with a pull element 50 for the synchronous movement of the two metal semi-rings 1;

[0033] Furthermore, when the rotating rod 2 is rotated by the tool, the two fixed rings 51 fixedly installed on the rotating rod 2 rotate synchronously. The rotation of the fixed rings 51 causes the fixed rod 52, which is hinged to it, to swing. The other end of the fixed rod 52 is fixedly connected to the long rod 53. Therefore, the movement of the fixed rod 52 will push the long rod 53 to move. The long rod 53 is fixedly connected to the baffle 4. The movement of the long rod 53 directly pushes the baffle 4 to slide inside the inner mold sleeve. When the long rod 53 moves, the inclined rods 501 at its top and bottom (connected to the inner wall of the metal half ring 1 through the hinge seat 502) move accordingly. The change in the tilt angle of the inclined rods 501 will pull the two metal half rings 1.

[0034] The two metal semi-rings 1 open: When the long rod 53 moves toward the baffle 4 (the rotating rod 2 rotates counterclockwise), the inclined rod 501 pushes the two metal semi-rings 1 to separate outward.

[0035] The two metal semi-rings 1 close: When the long rod 53 moves away from the baffle 4 (rotating rod 2 rotates clockwise), the inclined rod 501 pulls the two metal semi-rings 1 to close inward;

[0036] Since the rotating rod 2 is fixedly connected to the fixed ring 51, the rotation of the rotating rod 2 will drive the fixed ring 51 to rotate. The fixed ring 51 is hinged to a fixed rod 52 on one side, which can be pulled to swing. Since one end of the fixed rod 52 is fixedly connected to one end of the long rod 53, the long rod 53 is pulled to move closer to the rotating rod 2. The long rod 53 does not need to move directly. The movement of the long rod 53 will drive the two inclined rods 501 to rotate, thereby closing the two metal half rings 1. The baffle 4 is located between the two guide plates 8. There are gaps between the two sides of the baffle 4 and the two guide plates 8, which can satisfy the shaking of the baffle 4 without affecting the closing operation of the two metal half rings 1.

[0037] The fixed rod 52 and the fixed ring 51 form a force-saving lever mechanism. The two fixed rods 52 push the long rod 53 at the same time to avoid the obstruction caused by unilateral force. The long rod 53 is forcibly linked to the two metal half rings 1 through the pull member 50 to ensure that the two move synchronously. The synchronizing rod 7 connects the two long rods 53 to further ensure the retraction of the baffle 4. The fixed ring 51, fixed rod 52 and long rod 53 are all made of 40Cr alloy steel. The connection between the fixed rod 52 and the long rod 53 allows ±2° deflection to automatically compensate for minor misalignment during installation.

[0038] The pulling member 50 includes inclined rods 501 hinged to the top and bottom of the long rod 53. Each of the two inclined rods 501 is equipped with a hinge seat 502 at the end away from the long rod 53. The two hinge seats 502 are respectively fixedly installed on the inner walls of the two metal semi-rings 1. A synchronizing rod 7 is fixedly installed between the adjacent sides of the two long rods 53.

[0039] When the fixed rod 52 pushes the long rod 53 to move, the inclined rods 501 at the top and bottom of the long rod 53 are simultaneously subjected to force, pushing the metal half-ring 1 toward the center. The hinge seat 502 adopts a thin flange bearing to ensure that the inclined rod 501 swings without collision.

[0040] Specifically, when the rotating rod 2 rotates, the synchronizing rod 7 assists in driving the other long rod 53 to move synchronously, so as to realize the symmetrical contraction of the double baffles 4. The push rod 6 directly transmits the torque of the rotating rod 2 to the long rod 53, enhancing the contraction driving force. The synchronizing rod 7 rigidly connects the two long rods 53 to ensure that the baffles 4 move in parallel.

[0041] Guide plates 8 are fixedly installed on the inner walls of the notched ends of the two metal semi-rings 1. Two sliders 9 are integrally machined on both sides of the baffle 4. The guide plate 8 has a groove 10 for sliding the sliders 9 inside.

[0042] It should be noted that when the baffle 4 moves, the slider 9 slides along the guide plate 8 groove 10. There is a reserved gap between the two metal half rings 1 and the baffle 4 to enable the normal movement of the baffle 4, so that the two metal half rings 1 can come together without jamming the main baffle 4, thus constraining the movement trajectory of the baffle 4. The slider 9 cooperates with the groove 10 to eliminate shaking. The surface of the slider 9 is plated with hard chrome (thickness 0.05mm) to extend its service life. The groove 10 has a built-in polyurethane dust scraper to prevent concrete particles from entering.

[0043] The inner mold is inserted into the preset position of the support pad stone template and fixed by the external bracket to ensure the verticality of the axis and achieve positioning. The sealing cover 11 prevents concrete from entering the inner mold sleeve, which can prevent grout leakage and provide precise channel space for concrete pouring. The concrete flows into the cavity 122 of the punch 121 of the metal half ring 1. After hardening, it forms a reverse groove and naturally forms a rough interface to meet the requirements of no-scraping bonding. When demolding, rotating the rotating rod 2 drives the fixed ring 51 to rotate. The fixed rod 52 pushes the long rod 53 to move towards the center. Through the linkage of the inclined rod 501 and the hinge seat 502, the two metal half rings 1 are forced to approach synchronously. The long rod 53 pulls the baffle 4 to retract along the slide 10. The slider 9 guides the movement, the baffle 4 is separated from the concrete hole wall, the inner mold diameter is reduced, and the bonding force with the concrete is completely released. This solves the three major pain points of "difficult demolding, low precision and many waste molds" in traditional bolt hole construction.

[0044] Two limiting plates 13 are provided on one side of the baffle 4. The two limiting plates 13 are fixedly installed on the surfaces of the two metal semi-rings 1 respectively. The two limiting plates 13 are used to limit the movement range of the baffle 4.

[0045] Furthermore, when the baffle 4 moves to the set position, the slider 9 contacts the limiting plate 13, and the metal-to-metal hard contact prevents further movement. The limiting plate 13 serves as a physical stop surface when the baffle 4 returns to its original position.

[0046] A push rod 6 is fixedly installed on the surface of the rotating rod 2;

[0047] The push rod 6 is used to facilitate the adjustment of the rotation of the rotating rod 2.

[0048] The top of the inner mold sleeve is equipped with a sealing cap 11 for placing concrete to be poured into the inner mold sleeve;

[0049] The sealing cap 11 prevents concrete from entering the inner mold sleeve, thus preventing grout leakage. It is removed first when the inner mold is dismantled, serving as an operating window.

[0050] It also includes a no-scraping component 12, which includes multiple punches 121 integrally machined inside the two metal semi-rings 1, and each of the multiple punches 121 has a cavity 122 inside.

[0051] It is worth noting that when the concrete is poured, it fills the gap of the punch 121 → after hardening, it forms a barbed groove. When demolding, the wall of the cavity 122 elastically shrinks, achieving non-destructive separation. The 2mm thick wall of the cavity 122 can deform slightly, reducing demolding resistance.

[0052] This device inserts the inner mold into the preset position of the support pad template and fixes it with an external bracket to ensure the verticality of the axis and achieve positioning. The sealing cover 11 prevents concrete from entering the inner mold sleeve, thus preventing grout leakage and providing precise channel space for concrete pouring. The concrete flows into the cavity 122 of the punch 121 of the metal half ring 1, and after hardening, it forms a reverse groove, naturally forming a rough interface to meet the requirements of no-scraping bonding. When demolding, rotating the rotating rod 2 drives the fixed ring 51 to rotate, and the fixed rod 52 pushes the long rod 53 to move towards the center. Through the linkage of the inclined rod 501 and the hinge seat 502, the two metal half rings 1 are forced to approach synchronously. The long rod 53 pulls the baffle 4 to retract along the slide 10, the slider 9 guides the movement, the baffle 4 disengages from the concrete hole wall, the inner mold diameter shrinks, and the bonding force with the concrete is completely released.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable and reusable inner mold for bolt holes of bridge bearing pad stones, characterized in that, include: Inner mold sleeve, and rotating rod (2) installed inside the inner mold sleeve. The inner mold sleeve includes two metal half rings (1), one end of which is rotatably connected by the rotating rod (2); a gap is left between the other ends of the two metal half rings (1), and a baffle (4) adapted to the gap is provided at the gap. The inner mold sleeve is provided with a pushing mechanism (5) that moves the baffle (4) to open or close the gap.

2. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 1, characterized in that: A fixed seat (3) is fixedly installed inside one end of each of the two metal semi-rings (1), and the rotating rod (2) is rotatably installed inside the fixed seat (3).

3. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 1 or 2, characterized in that: The pushing mechanism (5) includes a fixed ring (51) fixedly installed on the surface of the rotating rod (2), a fixed rod (52) is hinged to one side of the fixed ring (51), a long rod (53) is fixedly installed at one end of the fixed rod (52), and one end of the long rod (53) is fixedly installed on the surface of the baffle (4).

4. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 3, characterized in that: The surface of the long rod (53) is fitted with a pull element (50) for the synchronous movement of the two metal half-rings (1).

5. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 4, characterized in that: The pulling member (50) includes a diagonal bar (501) hinged to the top and bottom of the long rod (53). A hinge seat (502) is installed at the end of each of the two diagonal bars (501) away from the long rod (53). The two hinge seats (502) are respectively fixedly installed on the inner wall of two metal semi-rings (1). A synchronizing rod (7) is fixedly installed between the adjacent sides of the two long rods (53).

6. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 3, characterized in that: Guide plates (8) are fixedly installed on the inner walls of the two metal semi-rings (1) with notches. Two sliders (9) are integrally machined on both sides of the baffle (4). The guide plate (8) has a groove (10) for sliding of the sliders (9).

7. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 3, characterized in that: Two limiting plates (13) are provided on one side of the baffle (4). The two limiting plates (13) are respectively fixedly installed on the surfaces of two metal semi-rings (1). The two limiting plates (13) are used to limit the movement range of the baffle (4).

8. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 1 or 2, characterized in that: A push rod (6) is fixedly installed on the surface of the rotating rod (2).

9. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 1, characterized in that: The top of the inner mold sleeve is equipped with a sealing cap (11) for placing concrete into the inner mold sleeve.

10. The detachable and reusable bridge bearing pad bolt hole inner mold according to claim 1, characterized in that: It also includes a no-scraping component (12), which includes multiple punches (121) integrally machined inside two metal half-rings (1), and each of the multiple punches (121) has a cavity (122) inside.

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