A reversible thread-in grade adjuster

Abstract

The application provides a reversible thread screwing type slope adjuster, relates to the technical field of bridge prefabricated T-beam construction equipment, and is characterized by comprising a top plate, a rotary hinge shaft rotatably connected to the lower surface of the top plate, a rotary hinge shaft rotatably connected to the upper surface of the bottom plate, and a telescopic small support rod, the upper end of the telescopic small support rod being hingedly connected to the lower surface of the top plate, and the lower end of the telescopic small support rod being hingedly connected to the upper surface of the bottom plate. The telescopic small support rod can provide power support for the top plate, standing or squatting operation is facilitated, the working strength of the operator is greatly reduced, the operation precision is effectively guaranteed, the slope adjuster is single-hinged at present, and the slope adjuster needs to be adjusted in a very inconvenient low position of the human body, which is extremely inconvenient, the control precision is low, and the operation is extremely inconvenient.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge precast T-beam construction equipment, and more specifically, it relates to a reversible threaded rotary slope adjuster. Background Technology

[0002] Precast T-beams are widely used in the construction of various bridges due to their advantages such as standardization, factory production, and centralized manufacturing.

[0003] However, during the installation of precast T-beams, the bridge often has a certain longitudinal slope, while the rubber bearings in contact with the precast T-beams are in a horizontal state. This creates an angle between the T-beam and the rubber bearings, leading to stress concentration and damage to the T-beams and shear stress on the rubber bearings. This not only significantly reduces the lifespan of the rubber bearings but also poses a threat to the safe operation of the bridge. To address this issue, slope adjusters are mainly used in engineering to adjust the slope of the precast T-beams at the contact point with the rubber bearings, ensuring surface contact during installation. Currently, most slope adjusters used in engineering are single-hinged, requiring extremely uncomfortable low-position adjustments, resulting in low slope accuracy and inconvenient operation. For these reasons, construction workers often prioritize convenience and fail to achieve the required adjustment accuracy, severely impacting construction quality. The few automatically adjustable slope adjusters available are also single-hinged. The rotation center of a single-hinged slope adjuster is not at one end of the top plate, only able to accommodate a certain longitudinal slope. Exceeding this value results in misalignment, while falling below it prevents precise adjustment. Summary of the Invention

[0004] In view of this, the present invention provides a reversible threaded slope adjuster, which adjusts the height of the screw-on adjustable leg by screwing the top thread of the adjustable leg into the inner threaded sleeve, thereby adjusting the slope of the top plate. During the adjustment operation, the telescopic small support rod can provide auxiliary support for the top plate, making it convenient to stand or squat, greatly reducing the workload of the operator and effectively ensuring the accuracy of operation.

[0005] This invention provides a reversible threaded slope adjuster, specifically comprising a top plate and a bottom plate; one end of the top plate and the bottom plate are hinged together; a telescopic small support rod, the upper end of which is hinged to the lower surface of the top plate, and the lower end of which is hinged to the upper surface of the bottom plate; two square tenons, both of which are fixedly connected to the lower surface of the top plate; two tenon connecting rods, each tenoned to one of the two square tenons; and two rotatable adjusting legs, each rotatably connected to the lower end of one of the two tenon connecting rods.

[0006] Furthermore, the lower surface of the top plate is fixedly connected to two upper pin plates, and the upper surface of the bottom plate is fixedly connected to two sets of lower pin plates. Each set of lower pin plates consists of two plates. The positions and structures of the two sets of upper and lower pin plates correspond to each other, and the upper and lower pin plates are hinged to each other.

[0007] A rotating hinge can be provided at the hinge position between the upper and lower pin plates to increase lateral stability.

[0008] Furthermore, the upper end of the retractable small support rod is hinged to a support rod upper end hinge seat, which is fixedly connected to the lower surface of the top plate. The lower end of the retractable small support rod is hinged to a support rod lower end hinge seat, which is fixedly connected to the upper surface of the bottom plate.

[0009] Furthermore, the opening of the square tenon is downward, and a tenon pin hole is provided on the square tenon, into which a positioning pin is inserted.

[0010] Furthermore, a square tenon is fixedly connected to the upper end of the tenon connecting rod, the square tenon is inserted into the square tenon base, and a tenon pin hole is opened on the square tenon. A lifting sleeve is fixedly connected to the lower end of the tenon connecting rod.

[0011] Furthermore, the lifting sleeve has a threaded inner cylinder inside, and the threaded inner cylinder has internal threads.

[0012] Furthermore, the lower end of the rotatable adjustable leg is fixedly connected to a circular base, the bottom surface of which is an arc shape that is approximately planar, and the upper end of the rotatable adjustable leg is fixedly connected to a spiral adjusting column.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention improves the structure of existing slope adjusters used in the construction of precast T-beams for bridges. The main improvements are: by screwing the top thread of the adjustable leg into the inner threaded sleeve, the height of the adjustable leg is adjusted, thereby adjusting the slope of the top plate. A level measuring device is used to detect the slope of the top plate and adjust it to the required slope. The required slope can be adjusted according to markings during adjustment. Furthermore, a telescopic small support rod provides additional support to the top plate during adjustment, facilitating standing or squatting operations, greatly reducing the workload of operators and effectively ensuring operational accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the top plate after it is folded.

[0017] Figure 3This is a schematic diagram of the lower surface structure of the top plate of the present invention.

[0018] Figure 4 This is the present invention. Figure 3 A magnified schematic diagram of the structure at point A.

[0019] Figure 5 This is the present invention. Figure 3 A magnified schematic diagram of the structure at point B.

[0020] Figure 6 This is a schematic diagram of the screw-down adjustable leg of the present invention.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Top plate; 101. Upper pin plate; 2. Bottom plate; 201. Lower pin plate; 3. Telescopic small support rod; 301. Upper hinge seat of the support rod; 302. Lower hinge seat of the support rod; 4. Square tenon seat; 401. Tenon seat pin hole; 402. Positioning pin shaft; 6. Tenon connecting rod; 601. Square tenon; 6011. Tenon pin hole; 602. Lifting sleeve; 6021. Threaded inner cylinder; 7. Rotary hinge shaft; 8. Tightenable adjusting leg; 801. Circular foot; 802. Spiral adjusting column. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 6 As shown:

[0028] This invention provides a reversible threaded slope adjuster, comprising a top plate 1; a rotating hinge shaft 7 rotatably connected to the lower surface of the top plate 1; a bottom plate 2, with the rotating hinge shaft 7 hinged to the upper surface of the bottom plate 2; a telescopic small support rod 3, the upper end of which is hinged to the middle of the lower surface of the top plate 1, and the lower end of which is hinged to the middle of the upper surface of the bottom plate 2; two square tenons 4, both of which are fixedly connected to the lower surface of the top plate 1; two tenon connecting rods 6, each tenoned to one of the two square tenons 4; and two twistable adjusting legs 8, each rotatably connected to the lower end of one of the two tenon connecting rods 6.

[0029] The top plate 1 has two upper pin plates 101 fixedly connected to its lower surface, with a rotating hinge shaft 7 rotatably connected between the two upper pin plates 101. The bottom plate 2 has two sets of lower pin plates 201 fixedly connected to its upper surface. Each set of lower pin plates 201 consists of two plates, with a rotating hinge shaft 7 rotatably connected between the two sets of lower pin plates 201. The top plate 1 and the bottom plate 2 are hinged together, and the lateral stability of the hinge is improved by the rotating hinge shaft 7. The upper pin plates 101 and the lower pin plates 201 provide support, allowing the top plate 1 to rotate and adjust its angle.

[0030] The telescopic small support rod 3 has an upper hinge seat 301 hinged to its upper end, which is fixedly connected to the lower surface of the top plate 1. The telescopic small support rod 3 has a lower hinge seat 302 hinged to its lower end, which is fixedly connected to the upper surface of the bottom plate 2. The telescopic small support rod 3 is hinged between the top plate 1 and the bottom plate 2 through the action of the upper hinge seat 301 and the lower hinge seat 302. When the top plate 1 is raised, the telescopic small support rod 3 can provide support, allowing the top plate 1 to rotate to the highest position for support, which facilitates the worker to rotate and adjust the adjustable legs 8.

[0031] The square tenon 4 has its opening facing downwards, and a tenon pin hole 401 is provided on the square tenon 4. A positioning pin 402 is inserted into the tenon pin hole 401. A square tenon 601 is fixedly connected to the upper end of the tenon connecting rod 6. The square tenon 601 is inserted into the square tenon 4. A tenon pin hole 6011 is provided on the square tenon 601. A lifting sleeve 602 is fixedly connected to the lower end of the tenon connecting rod 6. The positioning pin 402 limits the position of the square tenon 601, so that the tenon connecting rod 6 and the square tenon 4 can be tenoned together.

[0032] The lifting sleeve 602 has a threaded inner cylinder 6021 inside, with internal threads inside. The lower end of the screw-down adjustable leg 8 is fixedly connected to a circular base 801, the bottom surface of which is an arc shape that is approximately flat. The upper end of the screw-down adjustable leg 8 is fixedly connected to a spiral adjusting column 802. The spiral adjusting column 802 is connected inside the threaded inner cylinder 6021 to achieve a spiral connection. By rotating the screw-down adjustable leg 8, the positional relationship between the screw-down adjustable leg 8 and the tenon connecting rod 6 can be adjusted to achieve the effect of extending the support structure, thereby adjusting the inclination of the top plate 1.

[0033] The specific usage and function of this embodiment are as follows:

[0034] In this invention, firstly, the top plate 1 is rotated to its highest position. At this time, the telescopic small support rod 3 gradually extends as the top plate 1 rotates and supports the top plate 1. Then, the screw-on adjustable leg 8 is manually rotated into the inner threaded sleeve. The screw-on adjustable leg 8 has an adjustment slope marked on its surface. When the screw-on adjustable leg 8 moves to the marked position, the screwing operation is stopped. At this time, the marked slope is the slope required for the top plate 1. When the required slope is adjusted, the top plate 1 is rotated downward so that the bottom surface of the circular foot 801 is supported on the base plate 2. At this time, the slope adjustment operation is completed.

[0035] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A reversible thread-spinning grade adjuster characterized by: The utility model provides a kind of foldable table, including top plate (1), bottom plate (2), the top plate (1) is hinged with bottom plate (2) in one end, and between top plate (1) and bottom plate (2) is equipped with telescopic small strut (3), the upper end of telescopic small strut (3) is hinged in the lower surface of top plate (1), and the lower end of telescopic small strut (3) is hinged in the upper surface of bottom plate (2);Square mortise seat (4) is equipped with two, two square mortise seats (4) are fixedly connected in the lower surface of the other end of top plate (1);Mortise connecting rod (6) is equipped with two, two mortise connecting rods (6) are respectively mortised in two square mortise seats (4);Twist type adjustable leg (8) is equipped with two, two twist type adjustable legs (8) are respectively rotationally connected in the lower end of two mortise connecting rods (6), when using, rotate top plate (1) to highest position, telescopic small strut (3) gradually lengthens and supports top plate (1) along with the rotation of top plate (1) at this time;Then manually rotate twist type adjustable leg (8) and adjust.

2. The reversible thread-in grade-auger of claim 1 wherein: The lower surface of the top plate (1) is fixedly connected with two upper pin plates (101), and the upper surface of the bottom plate (2) is fixedly connected with two groups of lower pin plates (201). Each group of lower pin plates (201) is composed of two plate bodies. The positions and structures of the upper pin plates (101) and the lower pin plates (201) correspond to each other. The upper pin plate (101) is hinged with the corresponding lower pin plate (201).

3. The reversible thread-in grade-auger of claim 2 wherein: A rotating hinge shaft (7) is arranged at the hinged position of the upper pin plate (101) and the lower pin plate (201).

4. The reversible thread-in grade-auger of claim 1 wherein: The upper end of the telescopic small strut (3) is hinged with a strut upper end hinge seat (301), which is fixedly connected to the lower surface of the top plate (1). The lower end of the telescopic small strut (3) is hinged with a strut lower end hinge seat (302), which is fixedly connected to the upper surface of the bottom plate (2).

5. The reversible thread-in grade-auger of claim 1 wherein: The opening of the square mortise seat (4) faces downward, and a mortise pin hole (401) is formed in the square mortise seat (4). A positioning pin shaft (402) is inserted into the mortise pin hole (401).

6. The reversible thread-in grade-auger of claim 1 wherein: The upper end of the mortise connecting rod (6) is fixedly connected with a square tenon (601), which is inserted into the square mortise seat (4). The upper end of the mortise connecting rod (6) is fixedly connected with a lifting sleeve (602).

7. The reversible thread-in grader of claim 6, wherein: The inside of the lifting sleeve (602) is provided with a threaded inner cylinder (6021), and an internal thread is formed in the threaded inner cylinder (6021).

8. The reversible thread-in grade-auger of claim 1 wherein: The lower end of the twist type adjustable leg (8) is fixedly connected with a circular bottom foot (801), and the bottom surface of the circular bottom foot (801) is arc-shaped and approximately planar. The upper end of the twist type adjustable leg (8) is fixedly connected with a screw adjusting column (802).

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