Self-adjusting anchor pad device

Abstract

The utility model belongs to the technical field of bridge construction, and particularly relates to a self-adjusting anchor pad device. The self-adjusting anchor pad device comprises a base plate provided with a spherical joint groove and a spherical sliding block which is arranged on the spherical joint groove and can slide relative to the base plate. The spherical joint structure is arranged at the anchor pad, shearing force borne by the suspender is eliminated through movement of the sliding block, and potential safety hazards caused by frequent inclination of the suspender in the construction process of the movable module are effectively dealt with. According to the utility model, the influence of excessive inclination of the suspender on the stability of the hanging device is avoided through the arrangement of the circular truncated cone-shaped through hole and the limiting device in the preferable scheme. The device is simple in structure and convenient to disassemble, can be recycled after being disassembled, reduces the construction cost, and is suitable for being applied and popularized in practice.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge construction technical field, concretely relates to a self -adjusting anchor pad device. BACKGROUND

[0002] Mobile formwork is a kind of construction equipment with formwork, utilizes the support of bearing platform or pier column, carries out the construction equipment of field pouring to bridge.As an advanced construction equipment, mobile formwork has been widely applied in continuous beam construction of highway, highway bridge and railway bridge because of the advantages of good construction quality, simple operation and high efficiency.The common mobile formwork can be divided into mobile suspension formwork (upward type) and movable formwork (downward type), and in the installation process of mobile suspension formwork, the hanging bracket cantilever beam on the support column needs to be pulled up to the corresponding position of the column on the bottom die truss by the suspender.Therefore, the safety and stability of the hanging device need to be ensured at all times in the installation process of mobile suspension formwork.

[0003] Mobile formwork is often installed and constructed on high support column, for example, railway mobile formwork girder is operated at a height of more than 56m above the ground, so that the wind force at the top of pier column is large.When the suspension assembly hoists the device such as truss of large mass to a high position, the device such as truss is easily shaken by wind force.On the other hand, mobile formwork is designed to facilitate the installation of formwork to move between support columns to meet the needs of rapid construction.Therefore, when the mobile formwork moves rapidly, the hanging device will shake to varying degrees even if it does not carry large mass objects.The existing mobile formwork hanging device adopts flat head pad, and the reinforcement is anchored by nut.The suspender originally perpendicular to the hanging bracket cantilever beam is easily inclined when the hanging device moves with the mobile formwork, and the flat head pad is tangent to the reinforcement, so that the suspender is subjected to large shear force at the tangent position, which easily causes safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model is to overcome the defect that the flat head pad cannot solve the problem that the suspender in the mobile formwork hanging device is easily damaged by strong shear force in the prior art, and provides a self-adjusting anchor pad device to overcome the above-mentioned defects.

[0005] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme:

[0006] A self-adjusting anchor pad device, comprising a pad provided with a spherical surface engaging groove, and a spherical surface sliding block arranged on the spherical surface engaging groove and capable of sliding relative to the pad.

[0007] The hanging device of the mobile formwork is usually composed of a suspender and a fixing device, one end of the suspender is fixed with the truss, and the other end is fixed with the hanging bracket cantilever through the fixing device, so that the truss is suspended. In practice, the fixing device is usually a combination of a bolt and an anchor pad, the suspender passes through the anchor pad and the hanging bracket cantilever, and then the bolt is screwed on the suspender to make the bolt contact with the anchor pad to fix the position of the suspender. In practice, the suspender is usually a prefabricated steel bar, in order to facilitate the installation of the device and the lifting of the suspender, the diameter of the hole on the hanging bracket cantilever is usually larger than the diameter of the steel bar. Therefore, when the suspender inclines relative to the plane where the hanging bracket cantilever is located, the suspender will abut against the anchor pad, so that the suspender and the anchor pad are tangent to each other and bear a large shear force. In practice, the anchor pad usually uses a traditional flat head anchor pad, and the flat head anchor pad is difficult to rotate under external force, so that most of the large shear force is borne by the suspender. As the project proceeds, the frequency of the suspender inclination increases, the anchor pad and the suspender tangent to each other bear bending force many times, which may affect the tensile force that the suspender can bear due to metal fatigue and other factors, and safety hazards are generated.

[0008] Therefore, the utility model improves the anchor pad, designs a spherical joint structure, divides the traditional square head anchor pad into a pad plate and a spherical sliding block, and sets a spherical joint groove on the pad plate to contact with the spherical sliding block. In use, the suspender passes through the pad plate and the spherical sliding block at the same time, when the suspender inclines, the suspender will first drive the spherical sliding block, and then the spherical sliding block will move on the spherical joint groove. In this way, the shear force borne by the suspender is eliminated through the movement of the sliding block, so that the suspender is not easy to be damaged in the inclined state.

[0009] As a preferred, the pad plate is provided with a circular truncated cone through hole, so that the opening of the circular truncated cone through hole on one side of the spherical joint groove is smaller than the opening on one side of the pad plate. The circular truncated cone through hole with the large upper part and the small lower part is designed on the pad plate, so that the suspender is not easy to rub against the pad plate, and the small opening of the upper part can prevent the suspender from moving left and right, so that the suspender always revolves around the axis of the pad plate through hole even if it inclines or rotates, and the relative stability of the hanging device is maintained.

[0010] As a preferred, the spherical sliding block and the spherical joint groove have the same curvature. The contact area of the spherical sliding block and the spherical joint groove is maximized, so that the stress on the pad plate is more uniform, and the possibility of damage is reduced.

[0011] As a preferred, the side of the spherical sliding block away from the spherical joint groove is outwardly protruded to form a boss for facilitating dismounting.

[0012] As a preferred, the spherical joint groove is provided with a friction reducing device for reducing friction. As the weight of the equipment hung by the hanging device increases, the friction between the spherical sliding block and the spherical joint groove also increases, in order to ensure the normal movement of the sliding block, it is necessary to set the friction reducing device for reducing friction.

[0013] As a further preferred, the friction-reducing device is a lubricating layer arranged on the surface. In practice, the lubricating oil can be applied on the spherical joint groove as the lubricating layer, and the diamond-like carbon coating can also be arranged on the spherical joint groove as the lubricating layer.

[0014] As a further preferred, the pad is provided with a limiting device for preventing the spherical sliding block from excessive deviation. In order to prevent the boom from deviating from the pad during tilting or vibration, the limiting device is arranged on the pad, and the excessive tilting of the boom can also be prevented, thereby preventing damage to the hoisted device.

[0015] As a further preferred, the limiting device is a limiting ring arranged on the pad.

[0016] As a preferred, the anchor pad of the utility model further comprises a fastener for fixing the boom and the spherical sliding block.

[0017] As a further preferred, the fastener is two or more than two bolts. In practice, since vibration often occurs during the construction of the mobile module, it is necessary to ensure that the boom can be stably fixed on the spherical sliding block, and therefore two or more than two bolts with opposite threads can be used to be screwed into the boom from opposite directions, axial pre-tightening force is generated by mutual pressing, the pre-tightening force forms friction on the threaded contact surface, when the boom vibrates and tries to loosen the thread on one side, the friction of the thread on the other side will be enhanced in the opposite direction, forming a dynamic balance to prevent loosening.

[0018] Therefore, the utility model has the following beneficial effects:

[0019] (1) The utility model discloses a spherical joint structure arranged on the anchor pad, and the shearing force borne by the boom is eliminated through the movement of the sliding block, thereby effectively dealing with the safety hazards caused by the frequent tilting of the boom during the construction of the mobile module.

[0020] (2) The utility model discloses a circular truncated cone-shaped through hole and a limiting device, which can avoid the influence of the excessive tilting of the boom on the stability of the hoisting device.

[0021] (3) The utility model discloses a simple structure, which is convenient to disassemble, can be recycled after disassembly, reduces the construction cost, and is suitable for application and promotion in practice. DRAWINGS

[0022] Figure 1 It is a schematic diagram of the installation of the self-adjusting anchor pad device.

[0023] Figure 2 It is a schematic diagram of the structure of the self-adjusting anchor pad device of the utility model embodiment 1.

[0024] Figure 3This is a side view of the pad and spherical sliding block of a self-adjusting anchor device according to Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of a self-adjusting anchor device according to Embodiment 2 of this utility model.

[0026] Figure 5 This is a side view of the pad and spherical sliding block of a self-adjusting anchor device according to Embodiment 2 of this utility model.

[0027] In the figure: pad 1; spherical joint groove 2; frustum-shaped through hole 3; bolt 4; spherical sliding block 10; boss 11; lubricating layer 20; limit ring 30. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1 As shown, the self-adjusting anchor device in this embodiment is a hanging device in the moving module, installed on the cantilever beam of the supporting column. The suspension rod passes through both the cantilever beam and the self-adjusting anchor device of this embodiment, thereby fixing the suspension rod on the cantilever beam. Figure 2 , 3 As shown, the main body of the self-adjusting anchor device in this embodiment is a steel plate 1. A spherical joint groove 2 is formed on the upper surface of the plate 1. A through hole for accommodating the hanger rod is formed at the center of the plate 1. The opening of the through hole is smaller on one side of the spherical joint groove 2 and larger on the side away from the spherical joint groove 2, forming a frustum-shaped through hole 3. The opening diameter of the frustum-shaped through hole 3 is larger than the diameter of the hanger rod. Above the spherical joint groove 2 is a spherical sliding block 10 that can slide relative to the plate 1. The bottom of the spherical sliding block 10 is a spherical surface with the same curvature as the spherical joint groove 2, and the top protrudes outward to form a boss 11.

[0031] like Figure 2 As shown, after the lifting rod passes through the center of the spherical sliding block 10, it enters the frustum-shaped through hole 3 in the center of the pad block 1. Then, two bolts 4 with opposite thread directions are screwed into the lifting rod, so that the bolts 4 can fit against the spherical sliding block 10. At this time, due to the weight of the lifting rod, the spherical sliding block 10 is tightly attached to the spherical joint groove 2, ultimately achieving the desired effect.Figure 1 The self-adjusting anchor device of this embodiment is installed to achieve the desired effect. When the boom tilts relative to the cantilever beam (i.e., the plane of the pad 1) due to wind or other influences, the boom, under the action of the bolt 4, causes the spherical sliding block 10 to slide on the spherical joint groove 2, thereby dissipating the shear force borne by the boom. When the wind or other influences cease, the boom, under the weight of its own weight and that of the suspended device, causes the spherical sliding block 10 to return to a vertical state.

[0032] Example 2:

[0033] like Figure 1 As shown, the self-adjusting anchor device in this embodiment is a hanging device in the moving module, installed on the cantilever beam of the supporting column. The suspension rod passes through both the cantilever beam and the self-adjusting anchor device of this embodiment, thereby fixing the suspension rod on the cantilever beam. Figure 4 , 5 As shown, the main body of the self-adjusting anchor device in this embodiment is a steel pad 1. A spherical joint groove 2 is formed on the upper surface of the pad 1. A special lubricating oil is pre-applied to the surface of the spherical joint groove 2 to form a lubrication layer 20. A through hole for accommodating the hanger rod is formed at the center of the pad 1. The through hole has a smaller opening on one side of the spherical joint groove 2 and a larger opening on the side away from the spherical joint groove 2, forming a frustum-shaped through hole 3. The opening diameter of the frustum-shaped through hole 3 is larger than the diameter of the hanger rod. Above the spherical joint groove 2 is a spherical sliding block 10 that can slide relative to the pad 1. The bottom of the spherical sliding block 10 is a spherical surface with the same curvature as the spherical joint groove 2. Furthermore, a limiting ring 30 is provided on the pad 1 outside the spherical joint groove 2 to prevent excessive displacement of the spherical sliding block 10.

[0034] like Figure 4 As shown, after the lifting rod passes through the center of the spherical sliding block 10, it enters the frustum-shaped through hole 3 in the center of the pad block 1. Then, two bolts 4 with opposite thread directions are screwed into the lifting rod, so that the bolts 4 can fit against the spherical sliding block 10. At this time, due to the weight of the lifting rod, the spherical sliding block 10 is tightly attached to the spherical joint groove 2, ultimately achieving the desired effect. Figure 1 The self-adjusting anchor device of this embodiment is installed to achieve the desired effect. When the boom tilts relative to the cantilever beam (i.e., the plane of the pad 1) under wind or other influences, the boom, under the action of the bolt 4, causes the spherical sliding block 10 to slide on the spherical joint groove 2. The movement of the spherical sliding block 10 dissipates the shear force borne by the boom. When the spherical sliding block 10 may slide out of the spherical joint groove 2, the edge of the spherical sliding block 10 will abut against the limiting ring 30, thereby limiting the displacement of the spherical sliding block 10 and preventing the boom from tilting excessively. When the wind or other influences end, under the action of the boom and the weight of the device it supports, the boom causes the spherical sliding block 10 to return to a vertical state.

[0035] Having described embodiments of the present specification, the descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations of the described embodiments will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application, or technical improvement in the art, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A self-adjusting anchor pad device, characterized by: The invention relates to a spacer (1) provided with a spherical joint groove (2), and a spherical sliding block (10) arranged on the spherical joint groove (2) and capable of sliding relative to the spacer (1).

2. A self-adjusting anchor pad device according to claim 1, wherein: The spacer (1) is provided with a circular truncated cone shaped through hole (3), and the opening of the circular truncated cone shaped through hole (3) on one side of the spherical joint groove (2) is smaller than the opening on one side of the spacer (1).

3. A self-adjusting anchor pad device according to claim 1, wherein: The spherical sliding block (10) has the same curvature as the spherical joint groove (2).

4. A self-adjusting anchor pad device according to claim 1, wherein: The spherical sliding block (10) is outwardly convex on the side away from the spherical joint groove (2) to form a convex boss (11) for easy dismounting.

5. A self-adjusting anchor pad device according to claim 1, wherein: The spherical joint groove (2) is provided with a friction reducing device for reducing friction.

6. A self-adjusting anchor pad device according to claim 5, wherein: The friction reducing device is a lubricating layer (20) arranged on the surface of the spherical joint groove (2).

7. A self-adjusting anchor pad device according to claim 5, wherein: The spacer (1) is provided with a limiting device for preventing the spherical sliding block (10) from excessively deviating.

8. A self-adjusting anchor pad device according to claim 7, wherein: The limiting device is a limiting ring (30) arranged on the spacer (1).

9. A self-adjusting anchor pad device according to claim 1, wherein: The invention further comprises a fastener for fixing the suspender to the spherical sliding block (10).

10. A self-adjusting anchor pad device according to claim 9, wherein: The fastener is two or more bolts (4).

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