Verification device for solving problem of field tensioning equipment

Abstract

The utility model relates to the technical field of checking devices for tensioning equipment, and discloses a checking device for on-site tensioning equipment, which comprises a counter-force frame. The jack is arranged in the center of the reaction frame, and the jack is connected with the oil pump and the hydraulic system; the standard dynamometer is mounted at the top of the jack and is connected with the data acquisition system; according to the verification device for solving the problem of field tensioning equipment, the step of transporting the equipment to a measuring unit for verification is avoided through field calibration, the transportation and waiting time is greatly saved, the verification cost is reduced at the same time, and the verification efficiency is improved. And a construction team can rapidly calibrate the tensioning equipment, it is ensured that the equipment is put into use immediately when needed, the construction progress is accelerated, and the actual use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the calibration device of tensioning equipment, and particularly to a calibration device for solving the tensioning equipment on site. BACKGROUND

[0002] With the rapid development of modernization, prestress technology is widely used in concrete structure engineering to improve the bearing capacity and stability of the structure, and in prestressed concrete structure construction, tensioning equipment (such as a jack) is a key construction machine, and the performance and precision of the tensioning equipment directly affect the construction quality and safety of the prestressed concrete structure.

[0003] At present, the traditional tensioning equipment calibration usually needs to be carried out in a professional laboratory or a measurement organization, and is checked by a measurement unit, which is time-consuming, labor-intensive and labor-intensive, and the calibration cost is also high, thereby affecting the calibration effect, so the calibration device for solving the tensioning equipment on site is provided to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a calibration device for solving the tensioning equipment on site, which solves the problem that the traditional tensioning equipment calibration usually needs to be carried out in a professional laboratory or a measurement organization, and is checked by a measurement unit, which is time-consuming, labor-intensive and labor-intensive, and the calibration cost is also high, thereby affecting the calibration effect.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a calibration device for solving the tensioning equipment on site, comprising a counterforce frame;

[0006] A jack is arranged at the center of the counterforce frame, wherein the jack is connected with an oil pump and a hydraulic system respectively;

[0007] A standard dynamometer is installed on the top of the jack and connected with a data acquisition system;

[0008] A positioning and clamping mechanism for positioning and fixing the jack is installed on the counterforce frame.

[0009] Preferably, the positioning and clamping mechanism comprises a screw rod arranged at the bottom of the counterforce frame and support blocks fixed on the lower surface of the counterforce frame in a symmetrical arrangement;

[0010] The two ends of the screw rod are threadedly connected with L-shaped plates through the threads, one side of the two groups of L-shaped plates close to each other is fixed with a positioning seat, an extension sleeve rod is fixedly installed between the L-shaped plate and the counterforce frame, and the screw rod is rotatably connected with the two groups of support blocks through bearings.

[0011] Preferably, V-shaped grooves are formed on the sides of the two groups of positioning seats close to each other, the center lines of the V-shaped grooves correspond to the center line of the counterforce frame, and the threads on the two ends of the screw rod are designed in opposite structures.

[0012] Preferably, a portable moving mechanism is installed at the bottom of the counterforce frame, and the counterforce frame is moved through the portable moving mechanism.

[0013] Preferably, the portable moving mechanism comprises a U-shaped seat fixed at four corners of the counterforce frame, an adjusting seat sliding in the U-shaped seat, and universal wheels fixed at the bottom end of the adjusting seat.

[0014] A locking pin is slidingly arranged on the U-shaped seat, a spring is arranged around the surface of the locking pin, and the two ends of the spring are fixedly connected with the locking pin and the U-shaped seat, respectively, and first and second lock holes adapted to the locking pin are formed on the upper and lower sides of the surface of the adjusting seat.

[0015] Preferably, a moving hole adapted to the locking pin is formed on the U-shaped seat, the locking pin and the U-shaped seat are slidingly connected through the moving hole, and one end of the locking pin is inserted into the second lock hole.

[0016] Beneficial effects

[0017] The utility model provides a kind of calibration device of solving field tensioning equipment.Compared with prior art, it has the following beneficial effects:

[0018] The calibration device of solving field tensioning equipment avoids the step of transporting the equipment to a measurement unit for calibration by field calibration, greatly saves transportation and waiting time, reduces calibration cost, enables construction team to quickly calibrate the tensioning equipment, ensures that the equipment is immediately put into use when needed, speeds up construction progress, and meets actual use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a whole structure schematic view of the utility model;

[0020] Fig. 2 It is a whole structure bottom view of the utility model;

[0021] Fig. 3 It is a portable moving mechanism structure schematic view of the utility model.

[0022] In the figure: 101, counterforce frame;102, jack;103, standard dynamometer;2, positioning and clamping mechanism;201, positioning seat;202, screw rod;203, L-shaped plate;204, supporting block;3, portable moving mechanism;301, adjusting seat;302, universal wheel;303, U-shaped seat;304, locking pin;305, spring;306, first lock hole;307, second lock hole. Detailed Implementation

[0023] 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.

[0024] like Figs. 1-3 As shown:

[0025] A device for verifying on-site tensioning equipment includes a reaction frame 101;

[0026] Jack 102 is located at the center of reaction frame 101, and jack 102 is connected to oil pump and hydraulic system respectively;

[0027] Standard force gauge 103 is installed on top of jack 102 and connected to the data acquisition system;

[0028] The reaction frame 101 is equipped with a positioning clamping mechanism 2 for positioning and fixing the jack 102;

[0029] The positioning and clamping mechanism 2 includes a screw 202 disposed at the bottom of the reaction frame 101 and support blocks 204 symmetrically arranged on the lower surface of the reaction frame 101;

[0030] The two ends of the screw 202 are connected to L-shaped plates 203 through the threaded opening. A positioning seat 201 is fixed on the side of the two sets of L-shaped plates 203 that are close to each other. A telescopic sleeve is fixedly installed between the L-shaped plates 203 and the reaction frame 101. The screw 202 is rotatably connected to the bearing and two sets of support blocks 204.

[0031] Both sets of positioning seats 201 have V-shaped grooves on their sides that are close to each other. The center line of the V-shaped groove is designed to correspond to the center line of the reaction frame 101. The threads at both ends of the screw 202 have opposite structures.

[0032] In this implementation plan: When using the on-site tensioning equipment verification device, the reaction frame 101 is placed horizontally in the designated position, and the jack 102 is placed on the reaction frame 101 to ensure that it is aligned with the center line of the reaction frame 101.

[0033] When adjusting the alignment of the center line of the jack 102 and the reaction frame 101, when the jack 102 is placed on the reaction frame 101, the screw rod 202 is rotated, and the two ends of the screw rod 202 are threadedly connected with the L-shaped plates 203 through the threaded teeth, and the two groups of threaded teeth are designed in opposite structures. When the screw rod 202 is rotated, the two groups of L-shaped plates 203 can be driven to move towards each other, thereby synchronously driving the positioning seats 201 to move. The side of the two groups of positioning seats 201 that are close to each other is provided with a V-shaped groove, and the center line of the V-shaped groove corresponds to the center line of the reaction frame 101. When the two groups of positioning seats 201 are relatively close, the jack 102 is not aligned with the center line of the reaction frame 101, and the jack 102 can be driven to move in the V-shaped groove of the positioning seat 201 for adjustment until the positioning seat 201 clamps the jack 102, at which time the center line of the jack 102 corresponds to the center line of the reaction frame 101.

[0034] The center line alignment can ensure that the force applied by the jack 102 is transmitted along the center axis of the reaction frame 101, which can accurately reflect the actual working state of the jack 102, thereby improving the accuracy of the test data. By being able to clamp and fix the jack 102, the structure of the jack 102 and the reaction frame 101 is more stable, which helps to prevent unnecessary vibration and movement when applying force, which is crucial for maintaining consistency and repeatability during the test process.

[0035] Subsequently, the oil pump and hydraulic system (not shown in the figure) connected to the jack 102 are prepared for pressure testing, and then the standard force gauge 103 (such as a pressure sensor or a force gauge) is installed on the jack 102 and connected to the data acquisition system. Before starting, ensure that all equipment has been zeroed, including the jack 102 and the standard force gauge 103.

[0036] Start the oil pump and slowly apply pressure to the jack 102, while observing the readings of the standard force gauge 103. According to the technical specifications of the jack 102, different pressure points are applied, and at each pressure point, the readings of the jack 102 and the standard force gauge 103 are recorded. Ensure that the recorded data includes pressure values and corresponding measurement values. Compare the readings of the jack 102 with the readings of the standard force gauge 103 and analyze the differences between them. If there is a deviation between the readings of the jack 102 and the readings of the reaction frame 101, the deviation needs to be corrected according to the standard force gauge 103 data. Adjust the jack 102 so that its readings are consistent with the standard values. After adjustment, repeat the pressure application and data recording to verify whether the adjustment is effective, and ensure that the jack 102 is calibrated within the entire working pressure range;

[0037] The on-site calibration of the scheme avoids the step of transporting the equipment to the metrological unit for verification, greatly saves the transportation and waiting time, reduces the verification cost, enables the construction team to quickly calibrate the tensioning equipment, ensures that the equipment is put into use immediately when needed, speeds up the construction progress, and meets the actual use demand.

[0038] It should be noted that the power equipment involved in the product is powered by an external power source, and the data acquisition system, oil pump and hydraulic system are realized by conventional technical means.

[0039]

[0040] Tensioning system data processing value

[0041] Further, the calibration device comprises a positioning and clamping mechanism 2 and a tensioning device 1, wherein the tensioning device 1 comprises a counterforce frame 101 and a standard load cell 103, and the positioning and clamping mechanism 2 is arranged on the counterforce frame 101.

[0042] In an optional embodiment, the bottom of the counterforce frame 101 is provided with a portable moving mechanism 3, and the portable moving mechanism 3 facilitates the movement of the counterforce frame 101.

[0043] The portable moving mechanism 3 comprises a U-shaped seat 303 fixed at four corners of the counterforce frame 101, an adjusting seat 301 sliding in the U-shaped seat 303, and universal wheels 302 fixed at the bottom end of the adjusting seat 301.

[0044] A locking pin 304 is slidingly arranged on the U-shaped seat 303, a spring 305 is arranged around the surface of the locking pin 304, and the two ends of the spring 305 are fixedly connected with the locking pin 304 and the U-shaped seat 303.

[0045] A moving hole matched with the locking pin 304 is formed in the U-shaped seat 303, the locking pin 304 and the U-shaped seat 303 are slidingly connected through the moving hole, and one end of the locking pin 304 is inserted into the second lock hole 307.

[0046] In the embodiment, after the calibration is completed, the positioning and clamping mechanism 2 is used to release the extrusion of the jack 102, and then the jack 102 and the standard load cell 103 are removed.

[0047] When it is needed to move the counterforce frame 101, the counterforce frame 101 is tilted to make the bottom side of the counterforce frame 101 be raised, then the lock pin 304 is pulled to stretch the spring 305, so that the lock pin 304 is separated from the second lock hole 307 of the adjusting seat 301, the connection and locking between the adjusting seat 301 and the U-shaped seat 303 are released, then the adjusting seat 301 is moved downward, so that the first lock hole 306 corresponds to the lock pin 304, the lock pin 304 is loosened, the spring 305 rebounds and drives the lock pin 304 to be inserted into the first lock hole 306 of the adjusting seat 301, the adjusting seat 301 and the U-shaped seat 303 are locked again, at this time, the universal wheel 302 is lower than the bottom of the counterforce frame 101, the two groups of universal wheels 302 on the other side of the bottom of the counterforce frame 101 are adjusted downward by repeating the above operation;

[0048] The universal wheels 302 at the four corners of the counterforce frame 101 facilitate the movement of the counterforce frame 101, the staff does not need to hold the counterforce frame 101 all the time, the labor intensity of the staff is reduced, and the use effect of the device is improved.

[0049] The working principle and use process of the utility model: this solves the calibration device of the field tensioning equipment, when using, the counterforce frame 101 is placed horizontally in the designated position, the jack 102 is placed on the counterforce frame 101, and the center line of the counterforce frame 101 is ensured to be aligned;When the center line of the jack 102 and the counterforce frame 101 is adjusted, when the jack 102 is placed on the counterforce frame 101, the screw rod 202 is rotated, and the two ends of the screw rod 202 are threadedly connected with the L-shaped plate 203 through the thread teeth, and the two groups of thread teeth are designed in opposite structures, when the screw rod 202 is rotated, the two groups of L-shaped plates 203 can be driven to move towards each other, and then the positioning seat 201 is synchronously moved, and the two groups of positioning seats 201 are provided with V-shaped grooves on the side close to each other, and the center line of the V-shaped groove corresponds to the center line of the counterforce frame 101, when the two groups of positioning seats 201 are relatively close, the jack 102 and the counterforce frame 101 are not in the center line correspondence, and then the jack 102 can be driven to move and adjust in the V-shaped groove of the positioning seat 201, until the positioning seat 201 is clamped to the jack 102, at this time, the center line of the jack 102 corresponds to the center line of the counterforce frame 101;The center line alignment can ensure that the force applied by the jack 102 is transmitted along the center axis of the counterforce frame 101, so that the actual working state of the jack 102 can be accurately reflected, thereby improving the accuracy of the test data, the jack 102 and the counterforce frame 101 are clamped and fixed, so that the structure of the jack 102 and the counterforce frame 101 is more stable, which helps to prevent unnecessary vibration and movement when the force is applied, which is crucial for maintaining consistency and repeatability during the test process, then the oil pump and hydraulic system (not shown in the figure) connected with the jack 102 are prepared for pressure test, then the standard dynamometer 103 (such as pressure sensor or dynamometer) is installed on the jack 102 and connected with the data acquisition system, before starting, ensure that all equipment has been zeroed, including the jack 102 and the standard dynamometer 103, start the oil pump, slowly apply pressure to the jack 102, and observe the reading of the standard dynamometer 103 at the same time, according to the technical specifications of the jack 102, different pressure points are applied, at each pressure point, the reading of the jack 102 and the standard dynamometer 103 is recorded, and the recorded data includes pressure value and corresponding measurement value, the reading of the jack 102 is compared with the reading of the standard dynamometer 103, and the difference between the two is analyzed, if the reading of the jack 102 deviates from the reading of the counterforce frame 101, the deviation needs to be corrected, according to the data of the standard dynamometer 103, the reading of the jack 102 is adjusted to be consistent with the standard value, after adjustment, the pressure is repeatedly applied and the data is recorded to verify whether the adjustment is effective, and ensure that the jack 102 is calibrated in the whole working pressure range.

[0050] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. A device for verifying on-site tensioning equipment, characterized in that, Including the reaction frame (101); A jack (102) is located at the center of the reaction frame (101), wherein the jack (102) is connected to an oil pump and a hydraulic system respectively; A standard force gauge (103) is installed on top of the jack (102) and connected to the data acquisition system; The reaction frame (101) is equipped with a positioning clamping mechanism (2) for positioning and fixing the jack (102).

2. The calibration device for on-site tensioning equipment according to claim 1, characterized in that: The positioning and clamping mechanism (2) includes a screw (202) disposed at the bottom of the reaction frame (101) and support blocks (204) fixed on the lower surface of the reaction frame (101) and arranged symmetrically. The two ends of the screw (202) are connected to L-shaped plates (203) through threaded connections. A positioning seat (201) is fixed on one side of the two sets of L-shaped plates (203) that are close to each other. A telescopic sleeve is fixedly installed between the L-shaped plates (203) and the reaction frame (101). The screw (202) is rotatably connected to the two sets of support blocks (204) through bearings.

3. The calibration device for on-site tensioning equipment according to claim 2, characterized in that: Both sets of positioning seats (201) have V-shaped grooves on their sides that are close to each other. The center line of the V-shaped groove is designed to correspond to the center line of the reaction frame (101). The threads at both ends of the screw (202) have opposite structures.

4. The calibration device for on-site tensioning equipment according to claim 1, characterized in that: The bottom of the reaction frame (101) is equipped with a convenient moving mechanism (3), which facilitates the movement of the reaction frame (101).

5. The calibration device for on-site tensioning equipment according to claim 4, characterized in that: The portable moving mechanism (3) includes a U-shaped seat (303) fixed at the four corners of the reaction frame (101), an adjusting seat (301) sliding in the U-shaped seat (303), and a caster wheel (302) fixed at the bottom of the adjusting seat (301); A locking pin (304) slides on the U-shaped seat (303), and a spring (305) is wound around the surface of the locking pin (304). The two ends of the spring (305) are fixedly connected to the locking pin (304) and the U-shaped seat (303) respectively. The upper and lower sides of the surface of the adjusting seat (301) are respectively provided with a first locking hole (306) and a second locking hole (307) that are adapted to the locking pin (304).

6. The calibration device for on-site tensioning equipment according to claim 5, characterized in that: The U-shaped base (303) has a movable hole adapted to the locking pin (304). The locking pin (304) and the U-shaped base (303) are slidably connected through this movable hole, and one end of the locking pin (304) is inserted into the second locking hole (307).

Images