Silo slip form total cross-section real-time concrete strength detection system
By using a telescopic thrust to detect concrete strength in silo sliding form construction, the problem of difficulty in accurately detecting the strength of full-section concrete in the prior art is solved, and high-precision and automated detection effects are achieved, reducing costs.
Patent Information
- Application Number
- CN202421288506.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the prior art, it is difficult to accurately detect the strength of the full-section concrete in the silo sliding form construction, resulting in uncertainty in the lifting height of the sliding form, which may lead to the collapse of the silo wall or excessive lift friction resistance.
A real-time concrete strength detection system for full-section sliding mode of silo is designed, and a telescopic thrust is inserted into the concrete through the push rod, and the strength of the concrete is calculated by converting the force of the push rod and the cross-sectional area of the push rod, and the console is connected to the cable data line to monitor and record in real time.
Real-time detection of the strength of the full-section concrete in the silo is realized, avoiding the inaccurate detection caused by manual subjectivity, improving the degree of automation and accuracy of detection, and reducing the cost of detection.
Smart Images
Figure CN222866403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, and more specifically, to a real-time concrete strength detection system for the entire cross section of a silo slipform. Background Art
[0002] At present, silos are basically constructed using the slipform technology. The timing of lifting the sliding formwork is controlled by the concrete. The specification requires that the formwork can be lifted when the bottom layer inside the formwork reaches 0.2-0.4Mpa. There are currently two main methods for sliding: one is the method of pressing the side surface of concrete by hand, and the other is the method of testing the penetration of test blocks under the same conditions.
[0003] The concrete strength method is to press the concrete side surface by hand. After the silo slipform is lifted, the worker presses the concrete on the cylinder wall with his hand. If the handprint can be pressed and the handprint can rebound to its original state after letting go, it means that the concrete is about 0.2-0.4Mpa, which meets the requirements of the specification. According to experience, it can be directly lifted by about 250cm, or the template can be continuously lifted until the handprint cannot rebound to its original state after pressing the hand, and then the sliding is stopped. Different engineering areas are different. The empirical method determines the lifting height of the slipform without the actual measured data of concrete strength, and there is a problem of the chain of evidence not being closed in guiding on-site construction. This method is greatly affected by the subjectivity of the inspectors. The strength of pressing the handprint varies, the depth of the handprint varies, and the degree of rebound of the handprint varies. There is no accurate regulation. It depends entirely on the subjective judgment of the inspectors, which cannot accurately reflect the concrete strength, resulting in inaccurate test data and inability to form effective records. It may cause the slipform to be lifted too high, resulting in the collapse of the silo wall, or the slipform to be lifted too low, resulting in too much friction in the lower wheel, and unable to slide. In addition, this method of testing concrete strength requires manual labor to judge the concrete strength within a limited time. The number of points where personnel on the slipform platform press the concrete wall is limited, and there is not enough time to immediately determine the concrete strength of the entire cross-section of the silo.
[0004] The same condition test block penetration test method is a method recommended by the specification, but it is rarely adopted in actual projects. Its main disadvantages are that the same condition test block cannot accurately reflect the boundary conditions of the slipform concrete, and the detection instrument is not common. First, the common concrete penetration meter will not measure accurately when measuring low-strength concrete such as 0.2-0.4Mpa due to instrument accuracy problems. If you want to measure the standard, you need to purchase a special sensitive penetration instrument, and there is a problem that the price of high-precision concrete strength testing equipment is too expensive. Secondly, because the experimental instruments cannot be arranged on the slipform platform due to construction needs, the same condition test block must be placed on the ground and tested in the laboratory. The temperature natural boundary conditions and vibration conditions of the concrete in the formwork and the concrete test block are different. On the one hand, the wind at the slipform site is strong and the wind on the ground is small, and the wind blows the concrete to cause different temperature differences in the concrete. On the other hand, the hydration heat of the concrete in the slipform formwork and the hydration heat of the test block will also be different, resulting in a significant time difference in the concrete reaching a low strength level of 0.2-0.4Mpa, resulting in differences and inaccuracies between the test block strength and the silo concrete strength. Finally, the same condition test block penetration method requires each truckload of concrete to be used as the measurement partition, which makes it impossible to instantly determine the concrete strength of the entire cross-section of the silo, and thus cannot directly guide the determination of the sliding form sliding height. Utility Model Content
[0005] One purpose of the utility model is to provide a real-time concrete strength detection system for the entire cross-section of a silo slipform, which relies on a push rod of a telescopic thruster to be inserted into concrete, and the strength of the concrete is calculated by the force of the push rod and the cross-sectional area of the push rod, and has the advantages of simple structure, low cost and high degree of automation.
[0006] In order to solve the above technical problems, the utility model provides a real-time concrete strength detection system for the whole section of a silo slipform, comprising a plurality of detection units, which are evenly spaced in a circle along the circumferential direction of the silo, and a plurality of slipform lifting frames are evenly spaced in the circumferential direction of the silo on the slipform platform, which correspond exactly one to one with the plurality of detection units, and the detection unit comprises a telescopic thruster arranged on the slipform lifting frame, which is slidably arranged on the slipform lifting frame along the axial direction of the silo, and a push rod of the telescopic thruster extends downward into the concrete of the silo, and a distance is provided between the telescopic thruster and the top of the formwork when the telescopic thruster is shortened to the limit, and the telescopic thruster is connected to a control console arranged on the slipform platform via a cable data line, and the thrust value of the telescopic thruster and the stroke value of the push rod are obtained through the control console.
[0007] Preferably, one control console is provided, and the cable data lines of the plurality of detection units are arranged in a circumferential direction on the outer side of the top of the slipform lifting frame of the slipform outer platform, and are connected and controlled through the same control console.
[0008] Preferably, the top of the slipform lifting frame is a pair of double-beam channel steels arranged relatively at intervals, the slipform climbing rod passes through the middle of the pair of double-beam channel steels, and two sets of pulleys are arranged on both sides of the slipform climbing rod on the pair of double-beam channel steels, which are slidably arranged along the double-beam channel steels, and each set of pulleys located on the same side of the pair of double-beam channel steels are connected by an axis, and the telescopic thruster is connected to the axis of the two sets of pulleys.
[0009] Preferably, the center of the shaft is located on the gap between a pair of double-jointed channel steels of the cross beams, and each shaft is connected to a vertical suspension rod, which extends to the bottom of the double-jointed channel steels of the cross beams. The bottoms of the pair of suspension rods are connected to a suspension plate, and the suspension plate is connected to the telescopic thruster so that the telescopic thruster is located on one side of the slipform lifting frame.
[0010] Preferably, the hanging plate is connected to the telescopic thruster by bolts.
[0011] The utility model at least has the following beneficial effects:
[0012] 1. This application solves the problem that the concrete strength test by pressing the concrete side surface by hand can only be inferred by manually measuring the data obtained from the surface points of the inner and outer walls of the concrete, but cannot display the true concrete strength of the entire cross section. The telescopic thruster of this application is connected to the hanger plate with bolts, the hanger rod is welded to the hanger plate, the hanger rod is welded to the shaft of the pulley with shaft, and the pulley moves axially on the double-jointed channel steel beam of the slipform lifting frame, so that the telescopic thruster can perform concrete strength detection at any point on the cross section from the outer wall to the inner wall at the position of the slipform lifting frame. The slipform lifting frame is evenly distributed around the silo, so that the concrete strength of the entire cross section of the silo can be measured in time.
[0013] 2. This application solves the problem of inaccurate test data caused by subjective reasons such as different pressing strength of workers, different depths of handprints, and different rebound degrees of handprints when measuring concrete strength by pressing the side surface of concrete. The telescopic thruster can set the thrust size to ensure that the thrust is stable when measuring concrete strength. The data is transmitted to the telescopic thruster console through a cable data line to ensure that the information of all measuring points in the silo is obtained immediately, with a high degree of automation.
[0014] 3. This application solves the problem that the strength of the test block and the strength of the silo concrete are different and inaccurate due to the inconsistency between the natural boundary conditions and vibration conditions of the concrete in the actual slipform and the test block concrete in the same condition test block penetration test method. This application directly tests the strength of the cylinder wall concrete through a telescopic thruster, avoiding the problem of inconsistency between the strength of the silo concrete and the strength of the test block caused by different conditions such as on-site vibration, direct sunlight heating, and constraints around the concrete caused by the test block test.
[0015] 4. This application solves the problem that the commonly used concrete penetration meter is inaccurate when testing low-strength concrete such as 0.2-0.4Mpa required by the slipform specification due to manual operation, and the price of high-precision concrete strength testing equipment is too expensive; the concrete penetration meter mainly relies on manual test blocks for low-strength concrete testing, and the penetration needle has a short distance into the concrete, and the error is large when it is judged manually. The telescopic thruster directly tests the concrete in the formwork that is more than 1 meter deep, without the need for manual pressure application, with a high degree of automation and high precision. The price of high-precision concrete strength testing equipment is 30,000 to 40,000 yuan, while a telescopic thruster plus matching pulleys and steel only costs 300 yuan, and a silo has about 30 to 50 of them. In addition, the telescopic thruster console and related lines cost about 3,000 yuan, so a silo only costs 12,000 to 18,000 yuan, and the equipment can be recycled, which can reduce the overall application cost by 50%.
[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is an elevation view of the detection unit of the utility model;
[0018] Figure 2 It is a plan view of the detection unit of the utility model;
[0019] Figure 3 It is a top view of the overall structure of the utility model.
[0020] Description of reference numerals:
[0021] 1. Telescopic thruster, 2. Cable data line, 3. Control console, 4. Double-jointed channel steel beam, 5. Pulley, 6. Hanging rod, 7. Hanging plate, 8. Bolt, 9. Slipform climbing rod, 10. Slipform lifting frame, 11. Slipform platform, 12. Silo. DETAILED DESCRIPTION
[0022] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.
[0023] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do 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 on the present invention.
[0024] like Figures 1 to 3 As shown, the utility model provides a real-time concrete strength detection system for the whole cross section of a silo slipform, comprising a plurality of detection units, which are evenly spaced in a circle along the silo 12 in the circumferential direction, and a plurality of slipform lifting frames 10 are evenly spaced in the circumferential direction of the silo 12 on the slipform platform 11, which correspond exactly one to one with the plurality of detection units, and the detection unit comprises a telescopic thruster 1 arranged on the slipform lifting frame 10, which is slidably arranged on the slipform lifting frame 10 along the axial direction of the silo 12, and a push rod of the telescopic thruster 1 extends downward into the concrete of the silo 12, and a distance is provided between the telescopic thruster 1 and the top of the formwork when the telescopic thruster 1 is shortened to the limit, and the telescopic thruster 1 is connected to a control console 3 arranged on the slipform platform 11 through a cable data line 2, and the thrust value of the telescopic thruster 1 and the stroke value of the push rod are obtained through the control console 3.
[0025] The push rod of the telescopic thruster 1 extends into the concrete of the silo 12, and the thrust value of the telescopic thruster 1 and the stroke value of the push rod are obtained through the control console 3. The strength of the concrete is converted by the thrust value and the cross-sectional area of the push rod, and the maximum height of the sliding form can be determined by combining the stroke value of the push rod. Multiple telescopic thrusters 1 are arranged at intervals in the annular direction, so that the concrete strength of the entire cross section of the silo 12 can be measured in time; and the telescopic thruster 1 can also slide axially, so that the telescopic thruster 1 can perform concrete strength detection at any point on the cross section from the outer wall to the inner wall at the position of the sliding form lifting frame.
[0026] In another embodiment, the control console 3 is provided with one, and the cable data lines 2 of multiple detection units are arranged in a circumferential manner on the outer side of the top of the slipform lifting frame 10 of the slipform outer platform, and are connected and controlled by the same control console 3. A circle of telescopic thruster 1 cable data lines 2 are arranged on the outer side of the top of the slipform lifting frame 10 of the slipform outer platform, connected to each telescopic thruster 1; a telescopic thruster control console 3 is arranged on the outer side of the slipform platform, and each telescopic thruster 1 is controlled through the telescopic thruster 1 cable data lines 2. The setting of the control console 3 ensures that all measuring point information of the silo 12 is obtained in real time, and the degree of automation is high.
[0027] In another embodiment, the top of the slipform lifting frame 10 is a pair of double-beam channel steels 4 relatively spaced apart, the slipform climbing rod 9 passes through the middle of the pair of double-beam channel steels 4, and two groups of pulleys 5 are arranged on both sides of the slipform climbing rod 9 on the pair of double-beam channel steels 4, which are slidably arranged along the double-beam channel steels 4, and each group of pulleys 5 located on the same side of the pair of double-beam channel steels 4 are connected by an axis, and the telescopic thruster 1 is connected to the axis of the two groups of pulleys 5.
[0028] The center of the shaft is located on the gap between a pair of double-jointed cross beam channel steels 4, and each shaft is connected to a vertical suspension rod 6, which extends to the bottom of the double-jointed cross beam channel steel 4. The bottoms of the pair of suspension rods 6 are connected to a suspension plate 7, and the suspension plate 7 is connected to the telescopic thruster 1 so that the telescopic thruster 1 is located on one side of the slipform lifting frame. The suspension plate 7 is connected to the telescopic thruster 1 by bolts 8.
[0029] Two sets of shaft pulleys 5 are arranged above the double-jointed channel steel 4 of the cross beam of the slipform lifting frame and on both sides of the slipform climbing rod, so that the pulleys 5 can roll on the upper flange of the channel steel. The axis center of the pulley 5 is in the gap between the double-jointed channel steels. There is a suspension rod 6, the upper section of which is welded to the axis of the shaft pulley 5, and the lower end is welded to the suspension plate 7, which is located below the lower flange of the double-jointed channel steel. The telescopic thruster 1 is bolted to the bottom of the suspension plate 7, so that when the shaft pulley 5 slides, it can drive the telescopic thruster 1 to move in the horizontal direction, which is convenient for measuring the concrete strength at different positions of the silo 12.
[0030] After obtaining the concrete strength through the real-time concrete strength detection system for the full-section silo slipform of this application, the method for determining the maximum sliding height of the full-section slipform is as follows:
[0031] The first step is to arrange a telescopic thruster on each slipform lifting frame of the silo, and measure the distance D from the bottom of the telescopic thruster to the top of the formwork, and fill the slipform with concrete. At this time, the pouring height is the formwork height D1.
[0032] The second step is to set the maximum thrust of the telescopic thruster 1 to F and start to extend. According to the specification, the concrete strength should be within the range of 0.2-0.4Mpa when the formwork rises, so the concrete strength when the formwork rises is determined to be P (P is 0.2-0.4Mpa). The cross-sectional area of the push rod end of the telescopic thruster is A. The maximum thrust F = P*A.
[0033] The third step is to set the telescopic thruster to stop extending when the thrust reaches F 3 seconds but the push rod fails to move forward, and send the current telescopic stroke L1 to the telescopic thruster console.
[0034] Step 4: The telescopic thruster control console obtains the stroke L1 of the push rods of all telescopic thrusters in the full cross section and makes statistics, taking the maximum value L of each stroke L = L1-D max, that is, the maximum lifting height of this sliding mode is H = D1-L max .
[0035] Step 5: The push rod of the telescopic thruster is retracted and reset, and the sliding formwork jack lifts the sliding formwork to a maximum height not exceeding H.
[0036] Step 6: After lifting into place, carry out the work of steel bar binding, embedded parts embedding, concrete pouring, etc. At the same time, slide the telescopic thruster horizontally to ensure that the push rod is in a different position from the previous measurement.
[0037] Step 7. After the concrete pouring is completed, steps 2 to 6 can be repeated to complete the non-stop slipform construction.
[0038] It can be understood that the present invention is described by some embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation mode. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, other modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the illustrations shown and described here.
Claims
1. Silo slipform full-section real-time concrete strength detection system, characterized by: It comprises a plurality of detection units which are evenly spaced in a circle along the circumferential direction of the silo; a plurality of slipform lifting frames are evenly spaced in a circle along the circumferential direction of the silo on the slipform platform, which correspond exactly one to one with the plurality of detection units; the detection unit comprises a telescopic thruster arranged on the slipform lifting frame, which is slidably arranged on the slipform lifting frame along the axial direction of the silo; a push rod of the telescopic thruster extends downward into the concrete of the silo; when the telescopic thruster is shortened to the limit, there is a gap between the telescopic thruster and the top of the formwork; the telescopic thruster is connected to a control console arranged on the slipform platform via a cable data line; and the thrust value of the telescopic thruster and the stroke value of the push rod are obtained through the control console.
2. The silo slipform full-section real-time concrete strength detection system according to claim 1 is characterized in that: One console is provided, and the cable data lines of the plurality of detection units are arranged in a circumferential direction on the outer side of the top of the slipform lifting frame of the slipform outer platform, and are connected and controlled through the same console.
3. The silo slipform full-section real-time concrete strength detection system according to claim 1, characterized in that: The top of the slipform lifting frame is a pair of double-beam channel steels arranged relatively at intervals. The slipform climbing rod passes through the middle of the pair of double-beam channel steels. Two sets of pulleys are arranged on both sides of the slipform climbing rod on the pair of double-beam channel steels. They are slidably arranged along the double-beam channel steels. Each set of pulleys on the same side of the pair of double-beam channel steels are connected by an axis, and the telescopic thruster is connected to the axis of the two sets of pulleys.
4. The silo slipform full-section real-time concrete strength detection system according to claim 3 is characterized in that: The center of the shaft is located on the gap between a pair of double-jointed channel steels of the cross beams. Each shaft is connected to a vertical suspension rod, which extends to the bottom of the double-jointed channel steels of the cross beams. The bottoms of the pair of suspension rods are connected to a suspension plate, and the suspension plate is connected to the telescopic thruster so that the telescopic thruster is located on one side of the slipform lifting frame.
5. The silo slipform full-section real-time concrete strength detection system according to claim 4, characterized in that: The hanging plate is connected to the telescopic thruster through bolts.