A derrick tensioning and elongation measuring integrated device

Abstract

The utility model discloses a kind of suspender tensioning and elongation measurement integrated device, belong to through tied arch bridge construction technical field.The device includes detachably installed upper clamp and lower clamp at suspender connector and connecting sleeve, tensioning rod through two clamps, through-center jack installed on upper clamp, and the anchoring nut for locking tensioning rod.Its innovation point is that: dial gauge is fixed on upper clamp by magnetic attraction base, vertically adjustable height baffle assembly is fixed on lower clamp;The measuring probe of dial gauge is in contact with baffle.After rotating baffle screw rod to adjust baffle height and make dial gauge zero, start jack tensioning, it can be real-time, accurately read suspender elongation by dial gauge.The utility model solves the problem that traditional steel ruler measurement cannot be real-time, accurate reading, realizes the synchronous accurate control of tensioning force and elongation, and structure is simple, installation is stable, and it is strong in versatility, and can effectively protect suspender outer anticorrosive coating.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for tensioning construction of tie rods in under-bearing arch bridges, specifically to an auxiliary device that can simultaneously apply tension force and measure elongation in real time during tie rod tensioning construction. Background Technology

[0002] During the tensioning of the suspenders in a tied-arch bridge, construction specifications require dual control of both tension force and suspender elongation. Currently, tension force can be directly read using the hydraulic pressure gauge on the jack, but suspender elongation is typically measured manually using a steel ruler. This traditional method has significant drawbacks: First, the steel ruler cannot provide real-time dynamic readings of elongation, making it difficult for construction personnel to promptly determine whether tensioning is adequate, easily leading to under-tensioning or over-tensioning. Second, the steel ruler itself has limited accuracy, and manual readings are subject to visual errors. Furthermore, the complex construction site environment makes the steel ruler surface susceptible to contamination from oil and other pollutants, further increasing the difficulty of accurate readings and severely impacting the accuracy and efficiency of construction control. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an integrated device for measuring the tension and elongation of a suspension rod. This device can measure the elongation of the suspension rod in real time and accurately during the tensioning operation, realize the synchronous monitoring of tension force and elongation, and effectively ensure the construction quality.

[0004] Therefore, this utility model proposes an integrated device for tensioning and elongation measurement of a suspension rod, used for tensioning an installed suspension rod. The suspension rod has a connector at its upper end and a connecting sleeve at its lower end, comprising: The upper clamp is detachably mounted above the connector; The lower clamp is detachably mounted below the connecting sleeve; The tension rod extends vertically through the upper and lower clamps; A through-hole jack is fitted onto the upper part of the tension rod and supported on the upper clamp, and is used to apply axial tension force to the tension rod; The upper and lower anchor nuts are used to lock the upper and lower ends of the tension rod, respectively. The measuring unit includes a dial indicator and a magnetic base for fixing the dial indicator, the magnetic base being fixed to the upper clamp; An adjustable baffle assembly is fixedly installed on the lower clamp and includes a vertically adjustable baffle; the measuring probe of the dial indicator is in contact with the baffle.

[0005] Preferably, the upper clamp and the lower clamp are both composed of two symmetrical halves joined together by stepped interlocking surfaces and fastened together by at least one pair of tie bolts.

[0006] Preferably, a rubber pad is provided on the inner sidewall of the upper clamp and / or lower clamp that contacts the boom.

[0007] Preferably, the front side of the upper clamp is provided with a mounting groove for embedding and fixing the magnetic base.

[0008] Preferably, the adjustable baffle assembly includes a welding base, a baffle screw, and the baffle; the welding base is fixed to the lower clamp.

[0009] Preferably, the baffle screw is vertically arranged and threadedly connected to the welding base; the baffle is fixed to the top of the baffle screw.

[0010] Preferably, the tension rod is a precision-rolled threaded steel bar.

[0011] The integrated device for measuring the tension and elongation of the suspension rod provided by this utility model has the following significant advantages.

[0012] 1. By integrating a dial gauge measuring mechanism into the tensioning clamp system, the elongation value of the suspension rod can be read in real time and continuously throughout the entire operation of the through-hole jack. The data is intuitive and accurate, completely avoiding the problems of manual reading errors and measurement lag.

[0013] 2. The adjustable baffle assembly design allows the baffle height to be flexibly adjusted according to the initial distance between the connector and the connecting sleeve of different bridge suspenders, ensuring that the dial indicator can be correctly zeroed and effectively measured, and is suitable for tensioning conditions of various specifications of suspenders.

[0014] 3. The upper and lower clamps adopt a split stepped interlocking design and are secured with tie bolts. This ensures quick and accurate assembly on site, as well as a tight fit between the clamps and the lifting rod components, resulting in high overall stability. A specially designed magnetic base groove on the upper clamp ensures accurate and secure installation of the dial indicator.

[0015] 4. Bracket Coating: Rubber gaskets are installed on the inner sidewalls of the contact points between the upper and lower clamps and the bracket connector / sleeve, which can effectively protect the outer anti-corrosion coating of the bracket from mechanical damage during tensioning.

[0016] 5. Most of the components of this device are reusable. It is optimized and integrated based on traditional tensioning tools, resulting in low additional costs, simple and easy operation, and easy promotion and use on construction sites.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Fig. 1 This is a front view of the integrated device for measuring the tension and elongation of the suspension rod according to this utility model; Fig. 2 This is a side view of the integrated device for measuring the tension and elongation of the suspension rod according to this utility model; Fig. 3 This is a structural diagram of the adjustable baffle assembly in the integrated device for measuring the tension and elongation of the suspension rod of this utility model. Explanation of reference numerals in the attached drawings: 1. Lifting rod; 2. Through-hole jack; 3. Upper clamp; 4. Magnetic base; 5. Dial indicator; 6. Connecting sleeve; 7. Tensioning rod; 8. Adjustable baffle assembly; 9. Connector; 10. Lower anchor nut; 11. Lower clamp; 12. Upper anchor nut; 31. Tie bolt; 81. Baffle screw; 82. Welded base; 83. Baffle. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figs. 1-3 As shown, the integrated device for measuring the tension and elongation of the suspension rod of this utility model is mainly used in the tensioning construction of the suspension rod 1 of a tie-rod arch bridge. The upper end of the suspension rod 1 is a connector 9, and the lower end is a connecting sleeve 6. The device includes an upper clamp 3, a lower clamp 11, a precision-rolled threaded steel bar as a tensioning rod 7, a through-hole jack 2, a dial indicator 5, and an adjustable baffle assembly 8.

[0021] During clamp installation, the hanger rod 1 is already installed. The upper clamp 3 and lower clamp 11 are designed as separate units, with the interlocking parts of the two clamps designed as stepped to facilitate on-site positioning and engagement. They are connected by at least one pair of tie bolts 31 for tightening the clamps after installation. This design facilitates quick assembly and disassembly on the already installed hanger rod components. A ring of rubber gaskets is attached to the inner side of the upper clamp 3 and the mating sidewalls of the lower clamp 11 before installation to protect the outer anti-corrosion coating of the hanger rod and prevent damage to the coating during tensioning.

[0022] The upper clamp 3 is installed on the upper end face of the connector 9, and the lower clamp 11 is installed on the lower end face of the connecting sleeve 6. The tension rod 7 passes through the center holes of the upper clamp 3 and the lower clamp 11 sequentially from top to bottom. At the upper part of the tension rod 7, the through-hole jack 2 and the upper anchor nut 12 are installed sequentially, and the upper anchor nut 12 locks the piston stroke fixed end of the through-hole jack 2 to the tension rod 7. At the lower part of the tension rod 7, it is locked to the lower clamp 11 by the lower anchor nut 10.

[0023] A rectangular groove matching the size of the magnetic base 4 is pre-machined on the front of the upper clamp 3. During installation, the magnetic base 4 is inserted into this groove, and then the dial indicator 5 is attached to the magnetic base 4, ensuring the stability of the measurement reference.

[0024] An adjustable baffle assembly is fixed to the front side of the lower clamp 11. The adjustable baffle assembly includes a welding base 82, a baffle 83, and a baffle screw 81. The welding base 82 is welded to the welding base 82. The vertically arranged baffle screw 81 is threaded into a threaded hole on the welding base 82, and the movable end of the baffle screw 81 is fixedly connected to the baffle 83, enabling the baffle to move up and down. The probe of the dial indicator contacts the baffle to measure the elongation.

[0025] For different bridges, the vertical distance from the top of the connector to the bottom of the connecting sleeve varies. Therefore, a baffle that can move up and down is needed to measure the elongation under tensioning conditions for different bridges and different lengths of suspenders. After the jack is installed, a dial indicator 5 is installed on the magnetic base 4 on the upper clamp 3. The height of the baffle 83 on the lower clamp is adjusted using the screw device to zero the dial indicator. The through-hole jack is then started to begin tensioning, and the elongation is measured in real time.

[0026] The working principle and process of the integrated device for measuring the tension and elongation of the suspension rod of this utility model are briefly described below.

[0027] First, install the clamps and tensioning system: First, install the lower clamp 11 below the connecting sleeve 6 at the lower end of the boom, and install the upper clamp 3 above the connector 9 at the upper end of the boom, and tighten them with tie bolts 31 respectively. Then, insert the tensioning rod 7 from top to bottom into the center hole of the clamp.

[0028] Next, install the jacks and anchors: install the through jack 2 and the upper anchor nut 12 in sequence at the top of the tension rod 7, and install the lower anchor nut 10 at the bottom, and pre-tighten them.

[0029] Next, install and calibrate the measurement system: install the magnetic base 4 and dial indicator 5 into the groove of the upper clamp 3. Rotate the baffle screw 81 on the lower clamp 11 to adjust the height of the baffle 83 until its top surface contacts the measuring probe of the dial indicator 5, and adjust the reading of the dial indicator 5 to zero.

[0030] Final Tensioning and Real-Time Measurement: Tensioning is initiated by activating the through-hole jack 2. The piston of the through-hole jack 2 pushes the upper anchor nut 12 and tension rod 7 downwards. Since the lower clamp 11 and baffle 83 are relatively fixed (connected to the bridge structure via the lower anchor nut 10 and connecting sleeve 6), while the upper clamp 3 moves downwards along with the connector 9, a relative displacement occurs between the probe of the dial gauge 5 fixed on the upper clamp 3 and the top surface of the baffle 83. The value displayed by the pointer of the dial gauge 5 is the real-time elongation of the boom 1. The operator can simultaneously observe the oil pressure gauge reading and the dial gauge reading, achieving dual control of tension force and elongation.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated device for tensioning and elongation measurement of a suspension rod, used for tensioning an installed suspension rod (1), wherein the suspension rod (1) has a connector (9) at its upper end and a connecting sleeve (6) at its lower end, characterized in that, include: The upper clamp (3) is detachably mounted above the connector (9); The lower clamp (11) is detachably installed below the connecting sleeve (6); The tension rod (7) vertically penetrates the upper clamp (3) and the lower clamp (11). A through-hole jack (2) is fitted onto the upper part of the tension rod (7) and supported on the upper clamp (3) to apply axial tension force to the tension rod (7); The upper anchor nut (12) and the lower anchor nut (10) are used to lock the upper and lower ends of the tension rod (7), respectively. The measuring unit includes a dial indicator (5) and a magnetic base (4) for fixing the dial indicator (5), the magnetic base (4) being fixed to the upper clamp (3); An adjustable baffle assembly (8) is fixedly installed on the lower clamp (11) and includes a vertically adjustable baffle (83); the measuring probe of the dial indicator (5) is in contact with the baffle (83).

2. The integrated device for measuring the tension and elongation of a suspension rod according to claim 1, characterized in that, The upper clamp (3) and the lower clamp (11) are both made of two symmetrical halves joined together by a stepped interlocking surface and fastened together by at least one pair of tie bolts (31).

3. The integrated device for measuring the tension and elongation of a suspension rod according to claim 1 or 2, characterized in that, Rubber pads are provided on the inner sidewalls of the upper clamp (3) and / or lower clamp (11) that contact the lifting rod (1).

4. The integrated device for measuring the tension and elongation of a suspension rod according to claim 1, characterized in that, The upper clamp (3) has a mounting groove on its front side for mounting and fixing the magnetic base (4).

5. The integrated device for measuring the tension and elongation of a suspension rod according to claim 1, characterized in that, The adjustable baffle assembly (8) includes a welding base (82), a baffle screw (81) and the baffle (83); the welding base (82) is fixed on the lower clamp (11).

6. The integrated device for measuring the tension and elongation of a suspension rod according to claim 5, characterized in that, The baffle screw (81) is vertically arranged and threadedly connected to the welding base (82); the baffle (83) is fixed to the top of the baffle screw (81).

7. The integrated device for measuring the tension and elongation of a suspension rod according to claim 1, characterized in that, The tension rod (7) is a precision-rolled threaded steel bar.

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