Jacking device for barrel equipment and sectional type assembling method

Abstract

The invention discloses a jacking device for barrel equipment and a segmented assembly method, belongs to the field of barrel jacking, and aims to improve the barrel mounting efficiency. The jacking device comprises a lower supporting platform, a hydraulic jacking system and an upper arc-shaped saddle. The hydraulic jacking system comprises four independent hydraulic cylinders, the four hydraulic cylinders can be finely adjusted in a single-cylinder mode and synchronously linked, cylinder bodies of the hydraulic cylinders are detachably connected to a support of the lower supporting platform, and the top ends of the hydraulic cylinders are detachably connected to a positioning sleeve of the upper arc-shaped saddle. According to the barrel equipment segmented assembly method, multiple sets of jacking devices are adopted to cooperatively jack two adjacent sections of barrels, the unfitness of butt joint is adjusted through differential fine adjustment of all hydraulic cylinders in the sets, synchronous adjustment of the center and the elevation can be achieved, the assembly efficiency is improved, the alignment precision is improved, and the assembly quality is ensured.

Description

Technical Field

[0001] The invention belongs to the field of cylinder jacking, and in particular relates to a jacking device for cylinder equipment and a segmented assembly method. Background Art

[0002] Cylinder equipment such as chemical reactors, horizontal storage tanks, rotary kilns, and ball mill cylinders need to be hoisted in sections and precisely aligned during installation. Currently, hoisting cylinder equipment relies on cranes and manual adjustments, which presents the following problems:

[0003] First, it is difficult to align the center of the segmented cylinder, which is prone to eccentricity or tilt;

[0004] Second, the elevation adjustment accuracy is low, and it relies on repeated corrections with shims, which is inefficient;

[0005] Third, there is a lack of coordinated control when pairing multiple sections, resulting in large cumulative errors.

[0006] Most existing jacking devices are single hydraulic cylinders or mechanical jacking, which cannot achieve multi-degree-of-freedom linkage adjustment. Summary of the Invention

[0007] The purpose of the present invention is to provide a jacking device for cylinder equipment that can cooperate with multiple groups and has the function of synchronously adjusting the center and elevation, so as to improve the efficiency of cylinder installation.

[0008] The technical solution adopted by the present invention is: a jacking device for cylinder equipment, comprising a lower support platform, a hydraulic jacking system and an upper arc-shaped saddle; four guide columns are fixedly connected to the top surface of the lower support platform, and the guide columns are perpendicular to the top surface of the lower support platform; the four guide columns are arranged in two rows horizontally along the lower support platform and in two rows vertically along the lower support platform; four supports are fixedly connected to the top surface of the lower support platform; the four supports are arranged in two rows horizontally along the lower support platform and in two rows vertically along the lower support platform; the top of the arc-shaped saddle is an arc-shaped surface matching the outer wall of the cylinder, and the bottom end is a horizontal plane, and a guide cylinder corresponding to the four guide columns is fixed to the bottom end; the guide column is movably inserted in the guide cylinder; the bottom end of the arc-shaped saddle is fixed with a positioning sleeve corresponding to the four supports;

[0009] The hydraulic jacking system includes four independent hydraulic cylinders, which can be fine-tuned individually and synchronized with each other. The cylinder bodies of the hydraulic cylinders can be detachably connected to corresponding supports, and the top ends can be detachably connected to positioning sleeves.

[0010] Furthermore, the hydraulic circuit of each hydraulic cylinder includes a hydraulic pump, a variable frequency speed regulating motor, a safety valve, an electromagnetic reversing valve and a balance valve; the variable frequency speed regulating motor is connected to the hydraulic pump; the hydraulic pump inlet is connected to the filter;

[0011] The hydraulic pump outlet, electromagnetic reversing valve, balance valve and hydraulic cylinder are connected in sequence; the oil inlet of the safety valve is connected to the main oil circuit of the hydraulic pump outlet, and the oil outlet is directly connected to the oil tank.

[0012] Furthermore, it includes an automatic control system, which includes a PLC, a displacement sensor and a pressure sensor that are matched with the hydraulic jacking system; each hydraulic cylinder is equipped with a set of displacement sensors and pressure sensors; the pressure sensor is connected to the oil port of the rodless cavity of the hydraulic cylinder; the displacement sensor is connected to the hydraulic cylinder; the displacement sensor detects the displacement of each hydraulic cylinder and transmits it to the PLC, and the PLC controls the action of the hydraulic cylinder after receiving the signal from the displacement sensor.

[0013] Furthermore, the lower supporting platform includes a platform tabletop and platform columns. A platform column is fixed at the bottom of the four corners of the platform tabletop, and a ground anchor is fixed at the bottom end of the platform column. Bolt holes are provided on the ground anchor.

[0014] Furthermore, a crossbeam is fixedly connected between two adjacent platform columns, and a connecting column is provided between the transversely arranged crossbeam and the platform desktop, with the top end of the connecting column fixed to the platform desktop and the bottom end fixed to the middle of the crossbeam.

[0015] The segmented assembly method of the cylinder equipment comprises the following steps:

[0016] Step 1: Determine the number of jacking devices and their installation locations, and install the jacking devices in place;

[0017] Step 2: Hoist the first section of the cylinder to the arc saddle, and use the four hydraulic cylinders of the first section of the cylinder to jack up the first section of the cylinder to the designed elevation synchronously;

[0018] Step 3: Hoist the adjacent cylinder sections to the corresponding arc-shaped saddles, and lift the various jacking devices supporting the current cylinder section to a uniform elevation;

[0019] Step 4: Eliminate the misalignment to ≤0.3mm through differential adjustment of the hydraulic cylinders within the group;

[0020] Step 5: Docking.

[0021] Furthermore, in step 4, the laser tracker performs real-time detection of the misalignment. When the misalignment is ≤1 mm, the misalignment is eliminated to ≤0.3 mm through differential adjustment of the hydraulic cylinders within the group.

[0022] Furthermore, when the misalignment is greater than 1 mm, the elevation difference between adjacent groups is adjusted dynamically.

[0023] Furthermore, through the differentiated movement of the four hydraulic cylinders in the same group of jacking devices, the current cylinder body can produce controllable spatial posture changes, and the misalignment can be adjusted to ≤0.3mm.

[0024] Furthermore, in step 1, a central controller is configured and connected to the PLCs of each jacking device via a CAN bus;

[0025] In steps 2 to 4, the PLC receives the displacement sensor data and uploads it to the central controller. The central controller generates a lifting strategy based on the received information and sends it to the PLC, which instructs the corresponding hydraulic cylinder to act.

[0026] The beneficial effects of the present invention are as follows: the jacking device for the cylinder equipment disclosed in the present invention is arranged with four hydraulic cylinders, and the four hydraulic cylinders can be fine-tuned individually and the four cylinders can be synchronously linked, so that multiple groups can work together to achieve synchronous jacking and positioning of multiple sections of cylinders, adjust the elevation and alignment of the cylinders with high precision, improve the efficiency and quality of the assembly of segmented cylinder equipment, and reduce cumulative errors.

[0027] The present invention also discloses a segmented assembly method for cylinder equipment using a jacking device for cylinder equipment, which adopts multiple groups to collaboratively jack up two adjacent sections of the cylinder, and adjusts the misalignment amount through differential fine-tuning of each hydraulic cylinder in the group, which can realize synchronous adjustment of the center and elevation, improve assembly efficiency, improve alignment accuracy, and ensure assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a jacking device for a single-group cylinder equipment disclosed in the present invention;

[0029] Figure 2 for Figure 1 The main view;

[0030] Figure 3 This is a schematic diagram of the hydraulic jacking system of the jacking device for a single set of cylinder equipment;

[0031] Figure 4 This is a schematic diagram of the automatic control of the jacking device for a single set of cylinder equipment;

[0032] Figure 5 This is a schematic diagram of the automatic control of the jacking device for multiple groups of cylindrical equipment.

[0033] In the figure, there are the lower supporting platform 1, the platform table top 101, the platform column 102, the anchor plate 103, the crossbeam 104, the connecting column 105, the guide column 106, the support 107, the arc saddle 2, the guide cylinder 201, the positioning sleeve 202, the hydraulic jacking system 3, the hydraulic cylinder 301, the hydraulic pump 302, the variable frequency speed regulating motor 303, the safety valve 304, the electromagnetic reversing valve 305, the balancing valve 306, the pressure sensor 307, the displacement sensor 308, the PLC 309, and the central controller 4. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] In this manual, the terms "longitudinal", "lateral", "vertical", "upper", "front", "back", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the attached drawings when the device is in use. Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] Jacking device for cylinder equipment, such as Figure 1 and Figure 2 As shown, it includes a lower support platform 1, a hydraulic jacking system 3 and an upper arc-shaped saddle 2; four guide columns 106 are fixedly connected to the top surface of the lower support platform 1, and the guide columns 106 are perpendicular to the top surface of the lower support platform 1; the four guide columns 106 are arranged in two rows horizontally along the lower support platform 1 and in two rows vertically along the lower support platform 1; four supports 107 are fixedly connected to the top surface of the lower support platform 1; the four supports 107 are arranged in two rows horizontally along the lower support platform 1 and in two rows vertically along the lower support platform 1; the top of the arc-shaped saddle 2 is an arc-shaped surface matching the outer wall of the cylinder, and the bottom end is a horizontal plane, and a guide cylinder 201 corresponding to the four guide columns 106 is fixed to the bottom end; the guide column 106 is movably inserted in the guide cylinder 201; the bottom end of the arc-shaped saddle 2 is fixed with a positioning sleeve 202 corresponding to the four supports 107;

[0037] The hydraulic jacking system 3 includes four independent hydraulic cylinders 301, which can be fine-tuned individually and synchronized with each other. The cylinder bodies of the hydraulic cylinders 301 can be detachably connected to the corresponding supports 107, and the top ends can be detachably connected to the positioning sleeves 202.

[0038] Among them, such as Figure 3 As shown, the hydraulic circuit of each hydraulic cylinder 301 includes a hydraulic pump 302, a variable frequency speed regulating motor 303, a safety valve 304, an electromagnetic reversing valve 305 and a balance valve 306; the variable frequency speed regulating motor 303 is connected to the hydraulic pump 302; the inlet of the hydraulic pump 302 is connected to the filter;

[0039] The outlet of the hydraulic pump 302, the electromagnetic reversing valve 305, the balance valve 306 and the hydraulic cylinder 301 are connected in sequence; the oil inlet of the safety valve 304 is connected to the main oil circuit of the outlet of the hydraulic pump 302, and the oil outlet is directly connected to the oil tank.

[0040] like Figure 4As shown, the automatic control system includes a PLC 309, a displacement sensor 308, and a pressure sensor 307 that are compatible with the hydraulic jacking system 3. Each hydraulic cylinder 301 is equipped with a set of displacement sensors 308 and pressure sensors 307. The pressure sensor 307 is connected to the oil port of the rodless cavity of the hydraulic cylinder 301. The displacement sensor 308 is connected to the hydraulic cylinder 301. The displacement sensor 308 detects the displacement of each hydraulic cylinder 301 and transmits it to the PLC. The PLC controls the movement of the hydraulic cylinder 301 after receiving the signal from the displacement sensor 308. It instructs each variable frequency speed control motor 303 to move, thereby controlling the movement of the hydraulic cylinder 301.

[0041] The displacement sensor 308 is used to monitor the position of the piston rod of the corresponding hydraulic cylinder 301 and provide feedback to the PLC 309. The PLC 309 outputs PID control instructions based on the position of the piston rod until the jacking is in place. The electromagnetic reversing valve 305 can be a proportional valve, and the PLC 309 can also control the opening of the electromagnetic reversing valve 305 to adjust the flow rate. The pressure sensor 307 monitors the load of the corresponding hydraulic cylinder 301 and provides feedback to the PLC 309. The PLC 309 controls the speed of the variable frequency speed motor 303 to achieve functions such as synchronous lifting, automatic voltage stabilization, and displacement switching. The balancing valve 306 prevents the cylinder from sliding due to loss of pressure.

[0042] In order to improve the bearing performance, preferably, the lower supporting platform 1 includes a platform table top 101 and a platform column 102, and a platform column 102 is fixed at the bottom of the four corners of the platform table top 101, and a ground anchor 103 is fixed at the bottom end of the platform column 102, and bolt holes are provided on the ground anchor 103.

[0043] To further improve the load-bearing performance, a crossbeam 104 is fixedly connected between two adjacent platform columns 102. A connecting column 105 is provided between the horizontally arranged crossbeam 104 and the platform tabletop 101. The top of the connecting column 105 is fixed to the platform tabletop 101, and the bottom is fixed to the middle of the crossbeam 104. The platform columns 102, crossbeam 104, and connecting column 105 are all made of steel supports, forming a steel frame. The platform tabletop 101 is made of 20mm thick steel plate and installed on top of the steel frame. The four guide columns 106 on the platform tabletop 101 can be made of 45# steel, with a diameter of 80mm and a verticality of ≤0.1mm / m.

[0044] The curvature radius of the arc surface of the upper arc saddle 2 is equal to the outer diameter of the cylinder ± 5%, which is adapted to the outer shape of the cylinder. A self-lubricating bearing is provided in the guide cylinder 201 to reduce the friction resistance between the guide cylinder 201 and the guide column 106, making it easy to lift.

[0045] The segmented cylinder assembly method, using the above-mentioned lifting device, includes the following steps:

[0046] Step 1: Determine the number of jacking devices and their installation locations based on the BIM model, and install the jacking devices in place.

[0047] In this step, if Figure 5 As shown, a central controller 4 is configured and connected to the PLCs of each lifting device via a CAN bus. The central controller 4 receives information such as the real-time position and status of the hydraulic cylinders uploaded by the PLCs, generates a lifting strategy, and transmits it to the PLCs, which instruct the corresponding hydraulic cylinders 301 to operate.

[0048] Step 2: Hoist the first section of the cylinder onto the curved saddle 2. Use the four hydraulic cylinders 301 of the first section of the cylinder to lift it to the designed elevation. Using the four-cylinder synchronous linkage, that is, the four hydraulic cylinders 301 below the first section of the cylinder operate simultaneously and with the same displacement, the first section of the cylinder is lifted to the designed elevation. At this point, the measured elevation of the first section of the cylinder is H1. Once the first section of the cylinder is hoisted into place, it serves as the benchmark for the subsequent hoisting of the cylinder.

[0049] Step 3: Hoist the adjacent cylinder sections to their corresponding curved saddles 2. The central controller 4 instructs the various lifting devices supporting the current cylinder section to raise them to a uniform elevation. The uniform elevation is the elevation of each cylinder section to be hoisted, dynamically calculated from the measured elevation of the first cylinder section and the designed elevation difference, for example: Hn = H1 + Δhn, where Hn is the elevation of the nth section and Δhn is the designed elevation difference of the nth section.

[0050] The specific operation is as follows: the central controller 4 outputs a target elevation command Hn = H1 + Δhn to the lifting device supporting the nth section of the cylinder. The lifting device supporting the nth section of the cylinder uses PID control to lift the nth section of the cylinder to Hn. Of course, during this process, the lifting device supporting the already positioned section of the cylinder maintains the positioned elevation unchanged.

[0051] In this operation, the elevation of each section is designed by accumulating the height difference based on the actual measured value of the first section to avoid the transmission of installation errors. Through bus synchronization technology, that is, the central controller 4 instructs all target groups to act simultaneously, saving jacking time, thereby ensuring the centering straightness of each section of the cylinder and laying the foundation for fine-tuning the misalignment.

[0052] Step 4: Eliminate the misalignment to ≤0.3mm through differential adjustment of the hydraulic cylinder 301 in the group.

[0053] Specifically, by operating a specific hydraulic cylinder within the four hydraulic cylinders 301 of the same jacking device, the supported cylinder body is controlled to tilt, thereby correcting the center offset of the connecting surfaces of adjacent cylinder sections. This is essentially differential adjustment of the hydraulic cylinders within the group, rather than synchronous lifting of all four hydraulic cylinders 301. The specific process is as follows:

[0054] Step 1: Measure the misalignment, a process typically performed using a laser tracker. To measure misalignment, first measure the center coordinates of the butt joint end faces of the nth and n-1th sections of the cylinder. Then, calculate the offset between the center coordinates of the nth and n-1th sections to obtain the misalignment amount and direction. The misalignment directions are 0°, 90°, 180°, and 270°, respectively. 0° is the positive direction of the X-axis, 90° is the positive direction of the Y-axis, 180° is the negative direction of the X-axis, and 270° is the negative direction of the Y-axis.

[0055] Step 2: Calculate the differential adjustment amount of each hydraulic cylinder 301 in the group, and make the total of the differential adjustment amounts of each hydraulic cylinder 301 in the group exactly equal to the misalignment amount.

[0056] Step 3: The hydraulic cylinders 301 in the control group are fine-tuned according to their respective differential adjustment amounts.

[0057] In the present invention, the laser tracker measures the misalignment data and sends it to the central controller 4, which calculates the differential adjustment amount and sends the calculated differential adjustment amount to the PLC of the jacking device that performs the differential adjustment. The PLC controls each hydraulic cylinder 301 in the group to perform fine adjustments according to their respective differential adjustment amounts.

[0058] Step 5: Docking.

[0059] During single-cylinder fine-tuning, if the step length of a single hydraulic cylinder is too long, it is not conducive to ensuring the accuracy of differential fine-tuning and there is also a risk of the guide column getting stuck. Therefore, in this real-time method, the step length of a single hydraulic cylinder during single-cylinder fine-tuning is set to 0.1mm, which is conducive to ensuring the accuracy of differential fine-tuning. However, if the error variable is large, the number of adjustment steps of the hydraulic cylinder is large during the adjustment process, which is not conducive to improving the adjustment efficiency. Therefore, in step 4, the laser tracker performs real-time misalignment detection. If the misalignment is ≤1mm, the misalignment is eliminated to ≤0.3mm through differential adjustment of the hydraulic cylinder 301 within the group.

[0060] When the misalignment is greater than 1mm, the elevation difference between adjacent groups is dynamically adjusted. Specifically, when the misalignment is greater than 1mm, the lifting devices of the two adjacent cylinder sections are coordinated to temporarily change their relative height difference, enabling rapid correction of the misalignment. This process involves cross-group coordinated adjustment, rather than simply adjusting the hydraulic cylinders within a single group. The specific process is as follows:

[0061] Step 1: The laser tracker detects an error greater than 1 mm and determines that the fine-tuning within the group cannot be corrected quickly;

[0062] Step 2: Calculate the adjustment amount of the adjacent group elevation difference, so that the cylinders at both ends move vertically toward each other, that is, the four hydraulic cylinders 301 supporting one cylinder are moved downward as a whole, and the four hydraulic cylinders 301 supporting the other cylinder are moved upward as a whole. Adjustment efficiency is greatly improved.

Claims

1. Jacking device for cylinder equipment, characterized by: The invention comprises a lower support platform (1), a hydraulic jacking system (3) and an upper arc-shaped saddle (2); four guide columns (106) are fixedly connected to the top surface of the lower support platform (1), and the guide columns (106) are perpendicular to the top surface of the lower support platform (1); the four guide columns (106) are arranged in two rows along the horizontal direction of the lower support platform (1) and in two rows along the vertical direction of the lower support platform (1); four supports (107) are fixedly connected to the top surface of the lower support platform (1); the ... 07) are arranged in two rows along the lower support platform (1) in the horizontal direction and in two rows along the lower support platform (1) in the vertical direction; the top of the arc-shaped saddle (2) is an arc-shaped surface matching the outer wall of the cylinder, the bottom end is a horizontal plane, and a guide cylinder (201) corresponding to the four guide columns (106) is fixed to the bottom end; the guide column (106) is movably inserted into the guide cylinder (201); the bottom end of the arc-shaped saddle (2) is fixed with a positioning sleeve (202) corresponding to the four supports (107); The hydraulic jacking system (3) comprises four mutually independent hydraulic cylinders (301), wherein the four hydraulic cylinders (301) can be fine-tuned individually and the four cylinders can be synchronously linked; the cylinder bodies of the hydraulic cylinders (301) can be detachably connected to the corresponding supports (107), and the top ends can be detachably connected to the positioning sleeves (202).

2. The jacking device for drum equipment according to claim 1, characterized in that: The hydraulic circuit of each hydraulic cylinder (301) includes a hydraulic pump (302), a variable frequency speed regulating motor (303), a safety valve (304), an electromagnetic reversing valve (305) and a balancing valve (306); the variable frequency speed regulating motor (303) is connected to the hydraulic pump (302); the inlet of the hydraulic pump (302) is connected to the filter; The hydraulic pump (302) outlet, the electromagnetic reversing valve (305), the balance valve (306) and the hydraulic cylinder (301) are connected in sequence; the oil inlet of the safety valve (304) is connected to the main oil circuit of the hydraulic pump (302) outlet, and the oil outlet is directly connected to the oil tank.

3. The jacking device for drum equipment according to claim 2, characterized in that: The invention comprises an automatic control system, wherein the automatic control system comprises a PLC (309) matched with a hydraulic jacking system (3), a displacement sensor (308) and a pressure sensor (307); each hydraulic cylinder (301) is respectively equipped with a set of displacement sensors (308) and pressure sensors (307); the pressure sensor (307) is connected to the oil port of the rodless cavity of the hydraulic cylinder (301); the displacement sensor (308) is connected to the hydraulic cylinder (301); the displacement sensor (308) detects the displacement of each hydraulic cylinder (301) and transmits it to the PLC; the PLC controls the action of the hydraulic cylinder (301) after receiving the signal from the displacement sensor (308).

4. The jacking device for cylinder equipment according to claim 1 or 2, characterized in that: The lower supporting platform (1) comprises a platform tabletop (101) and a platform column (102), wherein one platform column (102) is fixedly disposed at the bottom of each of the four corners of the platform tabletop (101), and a base plate (103) is fixedly disposed at the bottom end of each of the platform columns (102), wherein bolt holes are provided on the base plate (103).

5. The jacking device for drum equipment according to claim 4, characterized in that: A crossbeam (104) is fixedly connected between two adjacent platform columns (102), and a connecting column (105) is provided between the transversely arranged crossbeam (104) and the platform desktop (101). The top end of the connecting column (105) is fixed to the platform desktop (101), and the bottom end is fixed to the middle of the crossbeam (104).

6. The segmented assembly method of the cylinder equipment is characterized in that: The following steps are involved: Step 1: Determine the number of jacking devices and the installation position, and install the jacking devices in place; the jacking devices are the jacking devices according to any one of claims 1 to 3; Step 2: hoist the first section of the cylinder to the arc-shaped saddle (2), and use the four hydraulic cylinders (301) of the first section of the cylinder to jack up the first section of the cylinder to the designed elevation in a synchronous manner; Step 3: hoist the adjacent cylinder sections to the corresponding arc-shaped saddles (2), and lift the various lifting devices supporting the current cylinder section to a uniform elevation; Step 4: Eliminate the misalignment to ≤0.3mm through differential adjustment of the hydraulic cylinder (301) within the group; Step 5: Docking.

7. The segmented assembly method of the drum equipment according to claim 6, characterized in that: In step 4, the laser tracker performs real-time detection of the misalignment amount. When the misalignment amount is ≤1 mm, the hydraulic cylinder (301) in the group is differentially adjusted to eliminate the misalignment amount to ≤0.3 mm.

8. The segmented assembly method of the drum equipment according to claim 7, characterized in that: When the misalignment is greater than 1mm, the elevation difference between adjacent groups will be adjusted dynamically.

9. The segmented assembly method of the drum equipment according to claim 7, characterized in that: Through the differential movement of four hydraulic cylinders (301) in the same group of jacking devices, the current cylinder body produces a controllable spatial posture change, and the misalignment is adjusted to ≤0.3mm.

10. The segmented assembly method of the drum equipment according to claim 6, characterized in that: In step 1, a central controller (4) is configured, and the central controller (4) is connected to the PLCs of each lifting device via a CAN bus; In steps 2 to 4, the PLC receives data from the displacement sensor (308) and uploads it to the central controller (4). The central controller (4) generates a lifting strategy based on the received information and sends it to the PLC, which instructs the corresponding hydraulic cylinder (301) to act.

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