Method and device for preventing narrow steel coil from rolling over during transportation

Abstract

The invention discloses a narrow steel coil transportation rollover prevention method and device, and belongs to the field of safety devices. Two stand columns are arranged on the two sides of the center line of a tractor saddle, jacks capable of longitudinally moving are arranged on the upper portions of the stand columns, telescopic bolts are installed at the front ends of the jacks, rubber pads are arranged at the front ends of the bolts, and horizontal movement of the rubber pads can be achieved by adjusting the lengths of the bolts. According to the height and the width of the narrow steel coil, the positions of the jack and the rubber pad are adjusted, so that the rubber pad tightly abuts against the steel coil, an opposite clamping mode for the narrow coil is formed, and the attachment width of the two sides of the steel coil is increased. By increasing the attachment width of a narrow steel coil to a tractor, the actual stability coefficient of steel coil transportation is improved, the safety operation coefficient of the narrow coil is improved, the hidden danger that the narrow coil rolls over or rolls down in the transportation process is fundamentally solved, and operation safety is guaranteed; after narrow coil transportation is completed, the stand columns lie on the two sides of the saddle, the normal function of the tractor is recovered, and normal loading and transportation of steel coils with common sizes are not affected.

Description

Technical Field

[0001] The present invention belongs to the field of safety devices, and particularly relates to a method and device for preventing the side overturning of steel coils during the transportation of narrow-width steel coils. Background Art

[0002] For the convenience of management and unified scheduling, during the normal production process, the applicant's affiliated units require that when transporting steel coils (also known as "strip steel") to the next processes such as galvanizing, tin plating, and color plating according to the business process and procedures, a 45t towing trailer (abbreviated as towing trailer) is used. With the continuous expansion of production business, the narrow-width steel coils produced by each branch factory according to the contract requirements are also transported to the units of each branch factory by the towing trailer.

[0003] The 45t towing trailer used by the applicant has a total trailer length of 4500mm and a trailer body width of 2100mm.

[0004] See Figure 1 As shown in, on the towing trailer (denoted by the sign 4 in the figure), there are arranged an array (usually at least two groups) of "V"-shaped (or "inverted triangle") saddles (also known as "brackets", denoted by the sign 3 in the figure) for carrying steel coils.

[0005] "Strip steel" (also known as "steel coil") mainly refers to coiled plates with a relatively narrow width, that is, the commonly referred to narrow strip steel and medium-wide strip steel, and sometimes especially refers to narrow strip steel (abbreviated as "narrow strip").

[0006] Generally, in the industry, strip steel with a width less than 600mm is customarily called narrow-width steel coil (also known as "narrow strip steel"), and strip steel with a width greater than this range is called medium- and wide-width steel coil (also known as "ordinary coil") according to different width parameter ranges.

[0007] At present, the narrow-width steel coils (abbreviated as "narrow coils") produced by the applicant are mainly divided into three categories of specifications:

[0008] The first category is that the self-weight of the steel coil (abbreviated as self-weight) is above 25T, and the width of the steel coil (abbreviated as "width") is less than 1.1m; the second category is that the self-weight is 20T to 25T, and the width is less than 1m; the third category is that the self-weight is 15T to 20T, and the width is less than 0.9m.

[0009] When "narrow coils" are transported by the aforementioned 45t towing trailer, due to the small contact area between its bottom and the bracket, there are great safety hazards during transportation. When encountering uneven roads or the tractor turning, if the speed of the tractor is not properly controlled, it is extremely easy to cause the "narrow coils" to overturn and roll down, not only causing damage to the transported narrow coils, but even causing serious personal injury accidents.

[0010] The original method of fixing the "narrow roll" is to use a rope tightener to reinforce the operation. The rope passes through the middle of the narrow roll core and is tightened using the rope tightener. However, this fixing method has the following problems: First, the fixing effect is not good. When the narrow roll shakes and shifts laterally, it cannot play an effective fixing role; second, the staff has to thread the rope back and forth, which is a large workload and low efficiency.

[0011] The invention patent with the authorization announcement date of 2011.04.06 and the authorization announcement number of CN 101625555 B discloses a "steel coil step-shift anti-rollover monitoring system and monitoring method thereof", including: CCD camera, signal processor, sound and light alarm. The CCD camera is installed above the moving steel coil, and the optical axis forms a certain angle with the horizontal line to ensure that the field of view of the CCD camera can cover the panoramic view of the monitored steel coil. The movement status of the steel coil is captured in real time by the CCD camera, and the captured image of the movement status of the steel coil is transmitted to the signal processor. Through image processing and intelligent recognition operations, it can be accurately determined whether the steel coil has lateral deviation or exceeds the lateral safe working range, so as to issue prompts or alarms to the staff, thereby realizing effective monitoring of the movement posture of the steel coil. As stated in paragraph

[0002] of its specification, its focus is on the monitoring of the movement posture of the steel coil during the moving and transporting process (which it calls "anti-rollover monitoring"), which "needs to directly limit or prevent the "rollover" of the steel coil, and especially cannot directly solve the rollover problem of the "narrow coil" faced by the applicant during transportation.

[0012] Therefore, how to eliminate the potential safety hazards of "narrow coils" during transportation, realize the safe transportation of "narrow coils" based on the existing 45t tractor trailer, and meet the relevant requirements of on-site production and transportation operations has become a practical technical problem that needs to be urgently solved during on-site vehicle transportation. Summary of the invention

[0013] The technical problem to be solved by the present invention is to provide a method and device for preventing rollover of narrow steel coils. A set of narrow steel coil transportation anti-rollover devices with adjustable clamping width and clamping height are symmetrically arranged on both sides of the V-shaped saddle of a 45t tractor trailer. By directly "clamping" the "narrow belt" on the V-shaped saddle, the attachment width and stability coefficient of the narrow steel coil on the 45t tractor trailer are increased, and the safety hazards ("rollover" problem) of the "narrow coil" during transportation are directly eliminated, and the safe transportation of the "narrow coil" is realized, which meets the relevant requirements of on-site production and transportation operations, and at the same time does not affect the transportation environment and transportation conditions of the 45t tractor trailer for "normal coils".

[0014] The technical solution of the present invention is: to provide a method for preventing the narrow-width steel coil from tipping over during transportation, which is characterized by including the following steps:

[0015] 1) On the vehicle bodies on both sides of the tractor-trailer saddle, a column is respectively and correspondingly arranged;

[0016] 2) The lower end of the column is pin-connected to the vehicle body in a laterally rotatable manner;

[0017] 3) On the facing surfaces of the two columns, a jack that can move up and down is respectively arranged;

[0018] 4) In front of the piston of each jack, a bolt with adjustable telescopic length is arranged;

[0019] 5) Hoist the narrow coil and place it on the saddle, and erect the columns on both sides of the saddle;

[0020] 6) Adjust the longitudinal height of the jack, eject the piston, adjust the length of the bolt, and then adjust the horizontal position of the rubber pad at its front end;

[0021] 7) The rubber pads at the ends of the bolts support the two end parts of the narrow coil from the side, realizing the "clamping" type fixing mode for the narrow coil;

[0022] 8) Confirm the tightening situation. If it meets the requirements, proceed to the next step. If it does not meet the requirements, return to step 6);

[0023] 9) Through the "clamping" type fixing on both sides of the narrow coil, increase the attachment width of the narrow coil to the tractor vehicle body and the actual stability coefficient during transportation;

[0024] 10) On the premise of ensuring that the actual stability coefficient is greater than the minimum stability coefficient, transport the narrow coil;

[0025] 11) When the narrow coil is transported to the destination, release the "clamping" type fixing of the narrow coil,

[0026] 12) Unload the coil, and the transportation process of the narrow coil ends;

[0027] 13) Retract the jack, piston, and bolt into place, and place the column in a lying state;

[0028] 14) Restore the normal loading function of the tractor, without affecting the normal loading and transportation of "ordinary coils".

[0029] For the method for preventing the narrow-width steel coil from tipping over during transportation, two columns are arranged on both sides of the center line of the 45t tractor saddle. On the upper part of each column, a jack that can move longitudinally is respectively arranged. At the front end of the jack, a telescopic bolt is installed. At the front end of the bolt, a rubber pad perpendicular to the screw rod is arranged. By adjusting the length of the bolt, the horizontal movement of the rubber pad can be realized;

[0030] After the narrow coil is hoisted onto the saddle of the tractor, adjust the longitudinal position of the jack according to the height and width of the narrow coil. Push out the jack and rotate the bolt to adjust the horizontal position of the rubber pad so that the rubber pad tightly presses against the coil, forming an "opposing clamping" mode for the narrow coil, thereby increasing the attachment width on both sides of the coil.

[0031] By increasing the attachment width of the narrow coil to the tractor, the actual stability coefficient of coil transportation is improved, and further the safety operation coefficient of the narrow coil is enhanced, fundamentally solving the potential hazards of the narrow coil tipping over or rolling during transportation and ensuring operation safety.

[0032] After the transportation of the narrow coil is completed, make the columns lie on their sides on both sides of the saddle to restore the normal functions of the tractor without affecting the normal loading and transportation of coils with ordinary dimensions.

[0033] Specifically, the column is composed of two channel steels. The openings of the two channel steels face each other and are fixed together by welding to form a hollow column structure.

[0034] Specifically, the minimum stability coefficient is 1.25.

[0035] Furthermore, at the lower end of the column, it is rotatably fixed laterally on a U-shaped base on the vehicle body. The U-shaped base is made of thick iron plate, with a rotating hole provided on the base and a rotating shaft / rotating pin provided in the rotating hole. The rotating shaft / rotating pin is driven by a rotating motor. The lower end of the column is fixedly connected to the rotating shaft / rotating pin and has rotatability along the length direction of the vehicle body under the drive of a rotating motor.

[0036] Furthermore, the rotating motor includes a motor that can rotate bidirectionally and its control circuit. The control circuit is a bidirectional rotation control circuit for the motor.

[0037] For the method for preventing side overturning of narrow-width coil transportation, an adjustable screw rod is used to achieve the free up-and-down movement of the jack, and an adjustable bolt is installed at the piston part of the jack to achieve effective "clamping" fixation of the narrow coil.

[0038] The technical solution of the present invention also provides a device for preventing side overturning of narrow-width coil transportation that operates using the above method, which is characterized in that:

[0039] On the vehicle body on both sides of the saddle of the tractor trailer, a column is respectively provided corresponding to each side. The lower end of the column is rotatably "pin-connected" and fixed to the vehicle body.

[0040] On the opposing surfaces of the two columns, a jack that can move up and down is respectively provided.

[0041] At the front of each jack, a telescopic bolt is installed; at the front end of the screw rod, a rubber pad for "clamping" the narrow coil is provided.

[0042] Adjust the longitudinal height of the jack, push out the piston, and adjust the length of the bolt to enable the translation of the rubber pad.

[0043] The rubber pads at the ends of the screw rod hold the two side ends of the narrow coil from the side, realizing an "opposing clamping" type of fixing mode for the narrow coil.

[0044] Through the "opposing clamping" type of fixing on both sides of the narrow coil, the attachment width of the narrow coil to the tractor body is increased and the actual stability coefficient during transportation is improved.

[0045] After the transportation process of the narrow coil is completed, retract the jack, piston, and screw rod into place, and place the column in a lying state, then the normal loading function of the tractor can be restored without affecting the normal loading and transportation of "ordinary coils".

[0046] The described anti-rollover device for transporting narrow-width steel coils increases the attachment width of the narrow coil on the tractor-trailer through the "opposing clamping" type of fixing on the narrow coil, thereby improving the actual stability coefficient of steel coil transportation, directly eliminating potential safety hazards existing during the transportation of the narrow coil, realizing the safe transportation of the narrow coil, and meeting the relevant requirements of on-site production and transportation operations.

[0047] Specifically, the lower end of the column is rotatably fixed laterally on a U-shaped base on the vehicle body; a rotating hole is provided on the U-shaped base, and a rotating shaft / rotating pin is provided in the rotating hole; the rotating shaft / rotating pin is driven by a rotating motor; the lower end of the column is fixedly connected to the rotating shaft / rotating pin, and under the drive of a rotating motor, it realizes rotatability along the length direction of the vehicle body.

[0048] Further, the central axis of the jack is set at 90° to the central axis of the column.

[0049] Specifically, the rotating motor includes a bidirectional rotatable motor and its control circuit; the control circuit is a motor bidirectional rotation control circuit.

[0050] Specifically, the jack is longitudinally movably fixed on the column, and the longitudinal height of the jack is adjusted through a lifting screw rod.

[0051] On the top of the jack piston, a sleeve with internal threads is welded, and a screw rod matching the internal threads of the sleeve is provided in the sleeve, forming a rotatable bolt structure.

[0052] Compared with the prior art, the advantages of the present invention are:

[0053] 1. The technical solution of the present invention connects two channel steels by welding to form a column. The strength of such a column is much greater than that of various square tubes on the current market, which can fully meet the on-site use requirements, and the manufacturing process is convenient and easy to implement.

[0054] 2. For the different widths and heights of various narrow coils, the technical solution of the present invention uses an adjustable screw to enable the jack to move up and down freely, and an adjustable bolt is installed at the piston part of the jack to meet the effective fixation of the narrow coil.

[0055] 3. During the implementation of this technical solution, when loading the narrow coil, the column is erected to fix the narrow coil; after the loading is completed, the column lies on its side on both sides of the tractor saddle, without affecting the normal loading and transportation of ordinary coils.

[0056] 4. In this technical solution, the column is erected or lies on its side by means of electric control, which reduces the workload of personnel, shortens the operation time for the column to be erected or lie on its side, and also plays a good role in improving the loading efficiency of narrow coils.

[0057] 5. This technical solution adopts an operation method combining electric and manual, and can quickly fix the steel coil on-site, changing the tediousness of the traditional method for fixing narrow coils, improving the safety operation coefficient of narrow coils, and meeting the on-site operation requirements.

[0058] 6. The technical solution of the present invention fundamentally avoids many problems caused by rollover during the transportation of narrow coils by increasing the attachment width and stability coefficient of narrow coils, and realizes the safe transportation of narrow coils. Brief Description of the Drawings

[0059] Figure 1 is a schematic diagram of the positional relationship between the anti-rollover device for transporting narrow-width steel coils of the present invention and the towing trailer;

[0060] Figure 2 is a schematic diagram of the structure of the anti-rollover device and the guide rail of the present invention;

[0061] Figure 3 is a schematic diagram of the connection between the anti-rollover device of the present invention and the base bracket;

[0062] Figure 4 is a schematic diagram of the electrical circuit for the rotation of the column in the anti-rollover device of the present invention;

[0063] Figure 5 is a schematic diagram of the specific operation process of the anti-rollover device of the present invention;

[0064] Figure 6 is a schematic diagram of the anti-rollover method for transporting narrow-width steel coils of the present invention.

[0065] In the figure, 1 represents the upright state of the device, 2 represents the lying state of the device on its side, 3 represents the V-shaped saddle, and 4 represents the towed trailer.

[0066] 10 is the column pin hole, 11 is the slide rail stop, 12 is the slide rail, 13 is the sleeve, 14 is the rubber pad, 15 is the screw, 16 is the jack, 17 is the fixing nut, 18 is the lifting screw, 19 is the column, 20 is the rotating motor, 21 is the thick iron plate, and 22 is the shaft pin. Detailed implementation method

[0067] The following further describes the present invention in conjunction with the accompanying drawings and embodiments.

[0068] Figure 1 In [description], on the body of the towed trailer 4, two sets of V-shaped saddles 3 are provided.

[0069] The technical solution of the present invention is to respectively set a set of adjustable anti-rollover devices for transporting narrow-width steel coils on both sides of the V-shaped saddle, so as to increase the attachment width of the narrow-width steel coils (abbreviated as "narrow coils") on the 45t towed trailer, thereby improving the actual stability coefficient of the steel coil transportation, directly eliminating the potential safety hazards existing in the transportation process of the narrow coils, realizing the safe transportation of the narrow coils, and meeting the relevant requirements of on-site production and transportation operations.

[0070] Among them, the adjustable anti-rollover device for transporting narrow-width steel coils (abbreviated as "anti-rollover device" or "device") has a rotatable shaft / pin along its bottom. Along this rotating shaft / pin, the entire anti-rollover device has rotatability in the longitudinal direction of the vehicle body (represented by the upright state 1 and the lying state 2 of the device in the figure).

[0071] When transporting narrow coils, place the device in the "upright state" to directly "clamp" the narrow coils and increase their stability coefficient.

[0072] When narrow coils do not need to be transported, rotate the anti-rollover device laterally (along the longitudinal direction of the vehicle body) and place it in the "lying state" to meet the transportation conditions for other medium and wide-width steel coils.

[0073] In Figure 2 [description], a structural schematic diagram of the anti-rollover device and the guide rail of the present technical solution is given.

[0074] A. Preparation for manufacturing the anti-rollover device:

[0075] 1. Material preparation: Two mechanical jacks, four channel steels with a length of 75 cm and a width of 12 cm, and process two 10# steel sleeves with a length of 11 cm and an outer diameter of 5 cm with standard internal threads.

[0076] 2. Prepare various iron plates, shaft pins, motors, and related electrical circuits, relays, switches and other accessories.

[0077] B. Fabrication of the anti-rollover device:

[0078] 1. Weld every two channel steels with their grooves facing each other and aligned vertically to form two columns, thus creating a strong hollow column 19, as Figure 2 shown.

[0079] Install a jack 16 at the upper position of the two columns. The central axis of the jack forms a 90° angle with the central axis of the columns.

[0080] 2. Weld a sleeve 13 with internal threads to the top of the jack piston. Machine an iron rod into a screw 15 that matches the internal threads of the sleeve. Weld an iron plate with a diameter of 16 cm and a thickness of 0.5 cm to the top of the screw. Paste a rubber pad 14 with a thickness of 1 mm on the surface of the iron plate (as Figure 2 shown).

[0081] 3. When shipping narrow coils, according to the width and height of the narrow coils, turn the lifting screw 18 to raise the jack 17 to the corresponding height, and turn the screw 15 to push out the jack, so that the rubber pad 14 presses against both sides of the narrow coil, achieving firm fixation of the narrow coil.

[0082] 4. Weld two thick iron plates 21 longitudinally on the base of the tractor (as Figure 3 shown). Connect the column 19 to the thick iron plate by a shaft pin. The shaft pin is welded to the column 19 as a whole. One end of the shaft pin 22 is connected to the output shaft of the rotation motor 20, thus realizing the control of the rotation of the column by the motor; when the rotation motor is powered on and rotates, its output shaft drives the column through the shaft pin to rotate around the shaft pin 22 as the axis.

[0083] When narrow coils need to be transported, the steering motor is powered on and rotates in one direction, causing the column originally in the "lying position" to rotate around the shaft pin 22, changing from the original "lying position" (i.e., in the horizontal state) to the "standing position" (i.e., in the vertical state), creating a prerequisite for the jack 16, the screw 15, and the rubber pad 14 to complete the opposite clamping of the narrow coil.

[0084] After the narrow coils are transported, the steering motor is powered on and rotates in the other direction, then the column returns from the "standing position" to the "lying position", lying on both sides of the saddle of the tractor-trailer, without affecting the normal loading of ordinary coils.

[0085] C. According to the characteristics of the rotation of the column, the technical solution of the present invention also designs and installs an independent electrical circuit for the rotation of the middle column of the anti-rollover device (referred to as the "electrical control system") to realize the driving of the "standing up" or "lying down" actions of the column.

[0086] Specifically, the above-mentioned electrical control system is as Figure 4 shown.

[0087] As can be seen from Figure 4 shown in, the electrical control system is actually a control circuit for the bidirectional rotation of the motor. If the button SB2 is pressed, the suction coil KM1 of the first contactor is energized and attracted, and the first main contactor contact (also known as the main contact) KM1 in the corresponding main circuit is closed. The rotating motor is energized and rotates in one direction (clockwise or counterclockwise), driving the column to rotate around the pivot pin 22 to realize the "erecting" action process of the column.

[0088] If the button SB3 is pressed, the suction coil KM2 of the second contactor is energized and attracted, and the second main contactor contact (also known as the main contact) KM2 in the corresponding main circuit is closed. The rotating motor is energized and rotates in the other direction (clockwise or counterclockwise) in reverse, driving the column to rotate around the pivot pin 22 to realize the "lying on side" action process of the column.

[0089] When the button SB1 is pressed, the suction coils KM1 and KM2 of the first and second contactors are both in the "de-energized" state, and the rotating motor is de-energized and stops rotating.

[0090] In terms of the electrical control principle, the above control circuit is essentially a control circuit for the bidirectional rotation of the motor.

[0091] D, Figure 5 shows the specific operation process of preventing the side roll of the narrow coil during shipment described in the present invention:

[0092] Assemble components such as channel steel, jacks, sleeve rods, and bolts into a column assembly, and install them on both sides of the tractor respectively. After confirming that the installation is firm, check the operation of each component after assembly, such as whether the jack 16 can extend or retract normally, and whether the screw rod 15 rotates normally.

[0093] After confirmation, connect the electrical system to the anti-side roll column assembly, standardize the routing of the wires, ensure that the motor 20 is reliably connected to the pivot pin 22, check that the electrical system can control the erection or lying on side of the column. After the performance test, lie the column 19 on its side, drive the tractor to the position for loading the narrow coil and load the narrow coil, and confirm that the narrow coil is placed in place.

[0094] Press the switch SB2 of the motor to energize KM1. The auxiliary contact KM1 is energized and closed, the interlocking contact KM1 is opened, the main contact KM1 is energized and closed, and the motor rotates. The output shaft of the motor drives the shaft pin 22 to rotate, and the column 19 rises. After confirming that the column 19 has risen to the proper position, press the stop switch SB1, the motor stops rotating, and the column 19 stops moving. Turn the lifting screw 18 to adjust the jack 16 to a position corresponding to the narrow coil. Rotate 15 to extend the screw and push out the piston of the jack 16, so that the rubber pad 14 is in close contact with the narrow coil, thereby enabling the jack to effectively apply an external force to the narrow coil. After confirming that the rubber pads 14 on both sides are in close contact with the narrow coil, disconnect the main switch QA of the electrical system, and the electrical system loses power to prevent misoperation. At this time, the transportation of the narrow coil can be completed, and the anti-rollover device can ensure the safe transportation of the narrow coil and prevent the narrow coil from tipping or rolling over.

[0095] E. Further, after summarizing the above content, the technical solution of the anti-rollover method for transporting narrow-width steel coils according to the present invention can be obtained, specifically as Figure 6 shown below.

[0096] As Figure 6 shown below, the anti-rollover method for transporting narrow-width steel coils according to the present invention includes the following steps:

[0097] 1) On the vehicle bodies on both sides of the tractor-trailer saddle, a column is respectively provided correspondingly;

[0098] 2) The lower end of the column is hinged and fixed to the vehicle body in a laterally rotatable manner;

[0099] 3) On the opposite surfaces of the two columns, a jack that can move up and down is respectively provided;

[0100] 4) In front of each jack, a telescopic bolt is provided and installed;

[0101] 5) At the front end of the screw, a rubber pad for "clamping" the narrow coil is provided;

[0102] 6) Hoist the narrow coil and place it on the saddle, and raise the columns on both sides of the saddle;

[0103] 7) Adjust the longitudinal height of the jack, push out the piston, and adjust the length of the bolt to achieve the translation of the rubber pad;

[0104] 8) The rubber pads at the ends of the screws hold the two end parts of the narrow coil from the side, realizing the "clamping" type fixing mode for the narrow coil;

[0105] 9) Confirm the tightening situation. If it meets the requirements, proceed to the next step; if it does not meet the requirements, return to step 7);

[0106] 10) By means of "clamping" fixation on both sides of the narrow coil, the attachment width of the narrow coil to the tractor body and the actual stability coefficient during transportation are increased;

[0107] 11) Transport the narrow coil on the premise of ensuring that the actual stability coefficient is greater than 1.25;

[0108] 12) The narrow coil is transported to the destination, unloaded, and the transportation process of the narrow coil ends;

[0109] 13) Retract the jack, piston, and screw into place, and place the column in a lying position;

[0110] 14) Restore the normal loading function of the tractor without affecting the normal loading and transportation of "ordinary coils".

[0111] Generally speaking, the technical solution of the present invention is to design and install two columns on both sides of the center line of the saddle of a 45t tractor, install a jack at the upper position of the column, and install a telescopic screw at the front end of the jack. After the narrow coil is hoisted onto the saddle of the tractor, according to the height and width of the steel coil, adjust the position of the jack, extend the jack, and rotate the bolt to make the rubber pad tightly press against the steel coil, so as to increase the attachment width on both sides of the steel coil. By increasing the attachment width of the steel coil to the tractor, the actual stability coefficient of the steel coil transportation is further improved.

[0112] After the narrow coil is transported, press the button to make the column lie on both sides of the saddle, so that the normal function of the tractor is restored without affecting the normal loading and transportation of ordinary coils.

[0113] F. Verification of operation safety:

[0114] During the transportation of goods, longitudinal and lateral overturning forces are generated on the goods, that is, the longitudinal inertia force, lateral inertia force, and wind force acting on the goods. The steel coil is transported and placed on the coil rack, and only the lateral inertia force is calculated in this technical solution.

[0115] Whether the goods can maintain stability during transportation must be determined through calculation. The condition for measuring the goods to be free from overturning is the stability coefficient, that is, the ratio of the stability moment formed by the center of gravity of the goods to the overturning moment formed by the external force acting on the goods. Generally, it is required that the actual stability coefficient η is not less than the minimum stability coefficient of 1.25 to avoid overturning.

[0116] When no reinforcement is carried out on the goods, the condition for the goods to be free from overturning is:

[0117] In the horizontal direction: η = stability moment / lateral overturning moment = 9.8Qb / Nh + Wh wind ≥ 1.25;

[0118] Among them, Q is the total weight of the goods (t), b is the lateral tipping distance (half of the width of the goods, mm), N is the lateral inertial force (kN), and W is the wind force (kN).

[0119] N = n 0 ×Q (kN)

[0120] n 0 - Lateral inertial force per ton of goods (kN / t)

[0121] Q - Weight of goods, t

[0122]

[0123] a - Distance of the center of gravity of the goods from the transverse center line of the vehicle, mm.

[0124] l - Distance between the centers of the load-bearing bogies

[0125] Wind force W = qF (kN)

[0126] q - Lateral calculated wind pressure. When the pressure-receiving surface is a plane, q = 0.49 kN / m 2

[0127] F - Projected area of the lateral windward surface, m 2

[0128] Current operating conditions: The total length of the 45t semi-trailer is 4500mm, the distance between the centers of the front and rear load-bearing bogies is 3500mm, and the width is 2100mm.

[0129] Calculated according to the size of the narrowest coil: The total height of the coil is 2.2m, the width of the coil is 900mm, the coil diameter D = 0.56m, and the total weight is 15t.

[0130] Substitute the above parameters into the wind force formula:

[0131] W = 0.49×π[(2.2 / 2) 2 -(0.56 / 2) 2 = 1.74 (KN)

[0132]

[0133] Substitute the calculated value into the formula for the actual stability coefficient η:

[0134]

[0135] The minimum stability coefficient lower than 1.25 is prone to tipping and there are unsafe factors.

[0136] After fixing with the adjustable support device described in this technical solution, recalculate; with other conditions remaining unchanged, when the support device fixes the steel coil, the lateral tipping distance b extends from half of the original steel coil width to the width of the trailer, i.e., 1050 mm; the total weight Q of the goods increases to 21 t (15 t for the steel coil + 6 t for the trailer weight). After recalculation, we get:

[0137]

[0138]

[0139] After calculation, the actual stability coefficient η is 1.65, which is greater than the minimum stability coefficient of 1.25. It can be seen that after using the adjustable support device, the stability coefficient required for safety is achieved.

[0140] In summary, in the actual use of the technical solution of the present invention during on-site transportation, an operation method combining electric and manual is adopted, and the steel coil can be quickly clamped and fixed on-site, increasing the attachment width and stability coefficient of the narrow-width steel coil on the 45 t towing trailer, realizing the effective fixation of the narrow coil by the 45 t towing trailer, changing the tediousness of the traditional narrow coil fixation method, improving the safety operation coefficient of the narrow coil, fundamentally solving the potential hazard of the narrow coil tipping over or rolling down during transportation, ensuring operation safety, realizing the safe transportation operation of the towing trailer for the narrow coil, and through corresponding improvements, the device can meet the operation requirements of towing trailers of various tonnages for transporting narrow coils, with strong practicability and a broad market promotion prospect.

[0141] The present invention can be widely used in the fields of fixation and safe transportation during the transportation of narrow-width steel coils.

Claims

1. A method for preventing the rollover of narrow steel coils during transportation, characterized in that it includes the following steps: 1) On the vehicle body on both sides of the tractor-trailer saddle, a column is respectively arranged correspondingly; 2) The lower end of the column is pivotally pinned to the vehicle body laterally; 3) On the facing surfaces of the two columns, a jack that can move up and down is respectively arranged; 4) In the front of the piston of each jack, a bolt that can be adjusted in length is arranged; 5) Hoist the narrow coil and place it on the saddle, and erect the columns on both sides of the saddle; 6) Adjust the longitudinal height of the jack, push out the piston, adjust the length of the bolt, and then adjust the horizontal position of the rubber pad at its front end; 7) The rubber pads at the ends of the bolts hold the two ends of the narrow coil from the side, realizing the "clamping" type fixing mode for the narrow coil; 8) Confirm the tightening situation. If it meets the requirements, proceed to the next step. If it does not meet the requirements, return to step 6); 9) Through the "clamping" type fixing on both sides of the narrow coil, increase the attachment width of the narrow coil to the tractor body and the actual stability coefficient during transportation; 10) On the premise of ensuring that the actual stability coefficient is greater than the minimum stability coefficient, transport the narrow coil; 11) When the narrow coil is transported to the destination, release the "clamping" type fixing of the narrow coil, 12) Unload the coil, and the transportation process of the narrow coil ends; 13) Retract the jack, piston, and bolt into place, and place the column in a lying state; 14) Restore the normal loading function of the tractor, without affecting the normal loading and transportation of "ordinary coils".

2. The method for preventing the rollover of narrow steel coils during transportation according to claim 1, characterized in that for the method for preventing the rollover of narrow steel coils during transportation, two columns are arranged on both sides of the center line of the 45t tractor saddle. On the upper part of each column, a jack that can move longitudinally is respectively arranged, and a telescopic bolt is installed at the front end of the jack. At the front end of the bolt, a rubber pad perpendicular to the screw is arranged. By adjusting the length of the bolt, the horizontal movement of the rubber pad can be realized; After the narrow coil is hoisted onto the saddle of the tractor, according to the height and width of the narrow coil, adjust the longitudinal position of the jack, push out the jack, rotate the bolt, and adjust the horizontal position of the rubber pad to make the rubber pad tightly hold the steel coil, forming an opposite "clamping" mode for the narrow coil, so as to increase the attachment width on both sides of the steel coil; By increasing the attachment width of the narrow steel coil to the tractor, the actual stability coefficient of the steel coil transportation is improved, and then the safety operation coefficient of the narrow coil is improved, fundamentally solving the hidden danger of the narrow coil rolling over or falling during transportation and ensuring the operation safety; After the narrow coil is transported, make the columns lie on both sides of the saddle, and restore the normal function of the tractor, without affecting the normal loading and transportation of ordinary-sized steel coils.

3. The method for preventing the rollover of narrow steel coils during transportation according to claim 1, characterized in that the column is composed of two channel steels, and the openings of the two channel steels face each other and are fixed into one body by welding to form a hollow column structure.

4. The method for preventing the rollover of narrow steel coils during transportation according to claim 1, characterized in that the minimum stability coefficient is 1.

25.

5. The method for preventing the rollover of narrow steel coils during transportation according to claim 1, characterized in that The lower end of the column can be fixed on a U-shaped base on the vehicle body in a laterally rotatable manner; the U-shaped base is made of a thick iron plate, a rotating hole is provided on the base, and a rotating shaft / rotating pin is provided in the rotating hole; the rotating shaft / rotating pin is driven by a rotating motor; the lower end of the column is fixedly connected to the rotating shaft / rotating pin, and is rotatable along the length direction of the vehicle body under the drive of a rotating motor.

6. The method for preventing rollover of narrow steel coil transportation according to claim 5, Its characteristics are The rotating electrical machine comprises a motor capable of bidirectional rotation and a control circuit thereof; the control circuit is a bidirectional rotation control circuit for the motor.

7. The method for preventing rollover of narrow steel coil transportation according to claim 1, Its characteristics are The method for preventing rollover of narrow steel coil transportation adopts an adjustable screw to realize free upward and downward movement of the jack, and an adjustable bolt is installed on the piston of the jack to realize effective "clamping" fixation of the narrow coil.

8. A narrow steel coil transportation anti-rollover device operated by the method of claim 1, Its characteristics are: On the vehicle body on both sides of the saddle of the tractor trailer, a column is respectively provided; the lower end of the column can be "pinned" and fixed to the vehicle body in a lateral rotation; On the facing surfaces of the two columns, a jack that can move up and down is respectively arranged; At the front of each jack, a retractable bolt is installed; at the front end of the screw rod, a rubber pad for "clamping" the narrow roll is set; Adjust the longitudinal height of the jack, push out the piston, and adjust the length of the bolt to achieve translation of the rubber pad; The rubber pad at the end of the screw supports the two ends of the narrow roll from the side, realizing the "clamping" fixing mode of the narrow roll facing each other; By "clamping" the two sides of the narrow roll, the attachment width of the narrow roll to the tractor body and the actual stability coefficient during transportation are increased; After the narrow coil transportation process is completed, the jack, piston and screw are retracted into place, and the column is placed in a side-lying state, and the normal loading function of the tractor can be restored without affecting the normal loading and transportation of "normal coils"; The narrow steel coil transportation anti-rollover device increases the attachment width of the narrow coil on the tractor trailer by "clamping" the narrow coil towards each other, thereby improving the actual stability coefficient of steel coil transportation, directly eliminating the safety hazards existing in the transportation of narrow coils, realizing the safe transportation of narrow coils, and meeting the relevant requirements of on-site production and transportation operations.

9. The anti-rollover device for narrow steel coil transportation according to claim 8, Its characteristics are The lower end of the column can be fixed on the U-shaped base on the vehicle body in a laterally rotatable manner; a rotating hole is provided on the U-shaped base, and a rotating shaft / rotating pin is provided in the rotating hole; the rotating shaft / rotating pin is driven by a rotating motor; the lower end of the column is fixedly connected to the rotating shaft / rotating pin, and is rotatable along the length direction of the vehicle body under the drive of a rotating motor.

10. The narrow steel coil transportation anti-rollover device according to claim 8, Its characteristics are The central axis of the jack is arranged at 90° to the central axis of the column.

11. The narrow steel coil transportation anti-rollover device according to claim 8, Its characteristics are The rotary electric machine includes a motor capable of bidirectional rotation and its control circuit; the control circuit is a bidirectional rotation control circuit for the motor.

12. The narrow-width steel coil transportation anti-overturning device according to claim 8, characterized in that the jack is longitudinally movably fixed on the column, and the longitudinal height of the jack is adjusted by a lifting screw; at the top of the jack piston, a sleeve with internal threads is welded, and a screw matching the internal threads of the sleeve is arranged in the sleeve to form a rotatable bolt structure.

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