Tensioning equipment for highway construction

Abstract

The utility model discloses a tensioning device for highway construction, which relates to the technical field of highway construction, and comprises an ejector rod, a sleeve and a pull rod, the upper surface of the ejector rod is fixedly connected with a baffle plate, the upper surface of the baffle plate is fixedly connected with a sliding rod, the upper surface of the sliding rod is provided with a through hole, and the through hole penetrates through the ejector rod; the inner wall of the sleeve is slidably connected with the sliding rod, a connecting plate is fixedly connected to the lower surface of the pull rod, a fixing pipe is fixedly connected to the lower surface of the connecting plate, and a matching hole is formed in the upper surface of the pull rod. One end of the reinforcing steel bar penetrates through the through hole, the ejector rod abuts against the prestressed product, the other end of the reinforcing steel bar extends into the matching hole, the fixing bolt is rotated, the fixing bolt moves towards the interior of the matching hole, then the limiting plate is driven to move, the limiting plate is in rotating fit with the rotating sleeve, the anti-skid layer is attached to the reinforcing steel bar, and the reinforcing steel bar is attached to the matching hole.

Description

Technical Field

[0001] The utility model relates to the technical field of highway construction, in particular to a tensioning device for highway construction. Background Art

[0002] Prestressing is the compressive stress pre-applied to the structure during construction in order to improve the service performance of the structure. The pre-stressed stress can fully or partially offset the tensile stress caused by the load during the service life of the structure and avoid structural damage. It is often used in concrete structures. Prestressing operations are required during highway construction.

[0003] In the prior art, when prestressed products are tensioned using jacks, there are often potential safety hazards such as thread slippage or steel strand breakage due to improper operation or material reasons, cylinder explosion due to operational errors, and flying out and injuring people by the jack fixing bolts. Therefore, construction workers should stay away from the jack during tensioning, especially to avoid people's hands or heads appearing at the rear end of the jack during tensioning. When the jack is tensioned, a wooden or iron protective wall should be set at the rear end of the jack to prevent clips, steel strands, jack fixing bolts, etc. from flying out and injuring people, which poses a safety hazard. Utility Model Content

[0004] The utility model aims to solve the disadvantages of the prior art, that is, potential safety hazards, and proposes a tensioning device for highway construction.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tensioning equipment for highway construction, comprising a top rod, a sleeve and a pull rod, the upper surface of the top rod is fixedly connected with a baffle, the upper surface of the baffle is fixedly connected with a sliding rod, the upper surface of the sliding rod is provided with a through hole, the through hole penetrates the top rod, the inner wall of the sleeve is slidably connected to the sliding rod, the lower surface of the pull rod is fixedly connected with a connecting plate, the lower surface of the connecting plate is fixedly connected with a fixed tube, the upper surface of the pull rod is provided with a matching hole, the inner wall of the sleeve is fixedly connected to the fixed tube, and a locking mechanism is provided on the matching hole.

[0006] As a further description of the above technical solution:

[0007] The locking mechanism comprises an internal threaded tube fixedly mounted on the surface of the pull rod, and the inner wall of the internal threaded tube is threadedly connected with a fixing bolt.

[0008] As a further description of the above technical solution:

[0009] One end of the fixing bolt is fixedly connected to a rotating sleeve, and the inner wall of the rotating sleeve is rotatably connected to a connecting arm.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the rotating sleeve is rotatably connected to a limiting plate via a connecting arm, and the limiting plate is in an arc shape.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the limiting plate is fixedly connected with an anti-skid layer, and the inner wall of the anti-skid layer is provided with anti-skid patterns.

[0014] As a further description of the above technical solution:

[0015] A first ear plate is fixedly connected to the surface of the baffle plate, and a second ear plate is fixedly connected to the surface of the connecting plate.

[0016] As a further description of the above technical solution:

[0017] The shape and position of the second ear plate are adapted to those of the first ear plate.

[0018] As a further description of the above technical solution:

[0019] A hydraulic rod is fixedly connected to the upper surface of the first ear plate, and an output end of the hydraulic rod is fixedly connected to the second ear plate.

[0020] As a further description of the above technical solution:

[0021] A telescopic sleeve covering the output end of the hydraulic rod is fixedly connected to the surface of the hydraulic rod, and the lower surface of the second ear plate is fixedly connected to the telescopic sleeve.

[0022] The utility model has the following beneficial effects:

[0023] Compared with the existing technology, the tensioning equipment of this highway construction passes one end of the steel bar through the through hole, so that the top rod abuts against the prestressed product, and one end of the steel bar extends into the matching hole, and the fixing bolt is rotated to move the fixing bolt into the matching hole, thereby driving the limit plate to move. The limit plate and the rotating sleeve rotate and cooperate to make the anti-skid layer fit against the steel bar, and the steel bar fits against the matching hole. The anti-skid layer increases the friction, making it difficult for the steel bar to move. After the staff move away, the hydraulic rod is controlled to extend, the top rod abuts against the prestressed product, the sleeve slides against the sliding rod, and the steel bar is stretched, which is not easy to cause damage to the staff and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a tensioning device for highway construction proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the sliding rod structure of a tensioning device for highway construction proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the pull rod structure of a tensioning device for highway construction proposed by the utility model;

[0027] Figure 4 It is a partial cross-sectional view of a tension rod of a tensioning device for highway construction proposed by the utility model;

[0028] Figure 5 This is a schematic diagram of the limit plate structure of a tensioning device for highway construction proposed by the utility model;

[0029] Figure 6 The utility model is a partial cross-sectional view of a telescopic sleeve of a tensioning device for highway construction proposed by the utility model.

[0030] Legend:

[0031] 1. Push rod; 2. Sleeve; 3. Pull rod; 4. Baffle; 5. Sliding rod; 6. Through hole; 7. Connecting plate; 8. Fixed pipe; 9. Matching hole; 10. Internal threaded pipe; 11. Fixed bolt; 12. Rotating sleeve; 13. Limiting plate; 14. Anti-skid layer; 15. Second ear plate; 16. First ear plate; 17. Hydraulic rod; 18. Telescopic sleeve. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Example:

[0035] Reference Figure 1-6 The utility model provides a tensioning device for highway construction: it includes a top rod 1, a sleeve 2 and a pull rod 3, the upper surface of the top rod 1 is fixedly connected with a baffle 4, the upper surface of the baffle 4 is fixedly connected with a sliding rod 5, the upper surface of the sliding rod 5 is provided with a through hole 6, the through hole 6 penetrates the top rod 1, the steel bar passes through the top rod 1 through the through hole 6, the inner wall of the sleeve 2 is slidably connected with the sliding rod 5, the lower surface of the pull rod 3 is fixedly connected with a connecting plate 7, the lower surface of the connecting plate 7 is fixedly connected with a fixed pipe 8, the fixed pipe 8 provides a guide for the sliding rod 5, the upper surface of the pull rod 3 is provided with a matching hole 9, the inner wall of the sleeve 2 is fixedly connected with the fixed pipe 8, and a locking mechanism is provided on the matching hole 9, one end of the steel bar is passed through the through hole 6, so that the top rod 1 abuts against the prestressed product, one end of the steel bar extends into the matching hole 9, and then the steel bar is fixed by the locking mechanism.

[0036] The locking mechanism includes an internal threaded tube 10 fixedly mounted on the surface of the pull rod 3, the inner wall of the internal threaded tube 10 is threadedly connected with a fixing bolt 11, one end of the fixing bolt 11 is fixedly connected with a rotating sleeve 12, the inner wall of the rotating sleeve 12 is rotatably connected with a connecting arm, the inner wall of the rotating sleeve 12 is rotatably connected to a limiting plate 13 through the connecting arm, the limiting plate 13 is in an arc shape, the inner wall of the limiting plate 13 is fixedly connected with an anti-skid layer 14, the inner wall of the anti-skid layer 14 is provided with anti-skid patterns, the surface of the baffle 4 is fixedly connected with a first ear plate 16, the surface of the connecting plate 7 is fixedly connected with a second ear plate 15, the shape and position of the second ear plate 15 are adapted to the first ear plate 16, and the upper surface of the first ear plate 16 is fixedly connected with Hydraulic rod 17, the output end of the hydraulic rod 17 is fixedly connected to the second ear plate 15, the surface of the hydraulic rod 17 is fixedly connected with a telescopic sleeve 18 covering its output end, the lower surface of the second ear plate 15 is fixedly connected to the telescopic sleeve 18, the steel bar is inserted into the matching hole 9, and the fixing bolt 11 is rotated to make the fixing bolt 11 move into the matching hole 9, thereby driving the limit plate 13 to move, and the limit plate 13 and the rotating sleeve 12 rotate and cooperate to make the anti-skid layer 14 fit with the steel bar, so that the steel bar fits with the matching hole 9, the anti-skid layer 14 increases the friction force, making the steel bar not easy to move, and then the hydraulic rod 17 extends, the top rod 1 abuts against the prestressed product, the sleeve 2 slides with the sliding rod 5, and the steel bar is stretched.

[0037] Working principle: pass one end of the steel bar through the through hole 6, so that the top rod 1 abuts against the prestressed product, and one end of the steel bar extends into the matching hole 9, and then fix the steel bar through the locking mechanism. The specific method is to rotate the fixing bolt 11 to make the fixing bolt 11 move into the matching hole 9, thereby driving the limit plate 13 to move, and the limit plate 13 and the rotating sleeve 12 rotate and cooperate to make the anti-skid layer 14 fit with the steel bar, so that the steel bar fits with the matching hole 9, and the anti-skid layer 14 increases the friction force, making the steel bar not easy to move, and then the hydraulic rod 17 extends, the top rod 1 abuts against the prestressed product, and the sleeve 2 slides with the sliding rod 5 to stretch the steel bar.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tensioning device for highway construction, comprising a top rod (1), a sleeve (2) and a tension rod (3), characterized in that: The upper surface of the push rod (1) is fixedly connected to a baffle plate (4), the upper surface of the baffle plate (4) is fixedly connected to a sliding rod (5), the upper surface of the sliding rod (5) is provided with a through hole (6), the through hole (6) passes through the push rod (1), the inner wall of the sleeve (2) is slidably connected to the sliding rod (5), the lower surface of the pull rod (3) is fixedly connected to a connecting plate (7), the lower surface of the connecting plate (7) is fixedly connected to a fixing tube (8), the upper surface of the pull rod (3) is provided with a matching hole (9), the inner wall of the sleeve (2) is fixedly connected to the fixing tube (8), and a locking mechanism is provided on the matching hole (9).

2. A tensioning device for highway construction according to claim 1, characterized in that: The locking mechanism comprises an internal threaded tube (10) fixedly mounted on the surface of the pull rod (3), and a fixing bolt (11) is threadedly connected to the inner wall of the internal threaded tube (10).

3. A tensioning device for highway construction according to claim 2, characterized in that: One end of the fixing bolt (11) is fixedly connected to a rotating sleeve (12), and the inner wall of the rotating sleeve (12) is rotatably connected to a connecting arm.

4. A tensioning device for highway construction according to claim 3, characterized in that: The inner wall of the rotating sleeve (12) is rotatably connected to a limiting plate (13) via a connecting arm, and the limiting plate (13) is in an arc shape.

5. A tensioning device for highway construction according to claim 4, characterized in that: The inner wall of the limiting plate (13) is fixedly connected with an anti-skid layer (14), and the inner wall of the anti-skid layer (14) is provided with anti-skid patterns.

6. A tensioning device for highway construction according to claim 1, characterized in that: A first ear plate (16) is fixedly connected to the surface of the baffle plate (4), and a second ear plate (15) is fixedly connected to the surface of the connecting plate (7).

7. A tensioning device for highway construction according to claim 6, characterized in that: The shape and position of the second ear plate (15) are adapted to those of the first ear plate (16).

8. A tensioning device for highway construction according to claim 7, characterized in that: A hydraulic rod (17) is fixedly connected to the upper surface of the first ear plate (16), and an output end of the hydraulic rod (17) is fixedly connected to the second ear plate (15).

9. A tensioning device for highway construction according to claim 8, characterized in that: A telescopic sleeve (18) covering the output end of the hydraulic rod (17) is fixedly connected to the surface of the hydraulic rod (17), and the lower surface of the second ear plate (15) is fixedly connected to the telescopic sleeve (18).

Images