Intelligent movable tensioning trolley and using method thereof

Abstract

The invention belongs to the technical field of bridge engineering construction equipment, and particularly relates to an intelligent movable tensioning trolley and a using method thereof.The intelligent movable tensioning trolley comprises a frame chassis, two sets of rolling wheels are symmetrically installed on the two sides of the frame chassis, and a supporting side plate is fixedly connected to the upper end of the frame chassis; a plurality of groups of tensioning mechanisms which are distributed in a linear array are arranged on the side walls of the supporting side plates and are used for applying pre-tensioning stress to the steel strands; and the adjusting mechanism is used for adjusting the gravity center layout of the frame chassis. By arranging the automatic detection mechanism, when the tensioning trolley drives the frame chassis to incline towards any side, the circular detection block inclines towards the side under the action of gravity, the size of the first sealed space corresponding to the side is reduced, and the hydraulic pressure is increased; a worker can observe the inclination state of the frame chassis in time, the tensioning piece is adjusted according to the inclination state, and the tensioning consistency of the steel strand is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering construction equipment, and in particular relates to an intelligent mobile tensioning trolley and a use method thereof. Background Art

[0002] Mobile tensioning trolley is a kind of equipment commonly used in engineering fields such as bridge construction, steel structure installation, tunnel construction, etc. It is mainly used to apply tension force to stretch prestressed steel strands or cables, and then reinforce or adjust the structure. It is often equipped with hydraulic system, electric system and tensioning equipment, which can perform precise tensioning operations at the construction site.

[0003] Among them, the hydraulic system is used to provide the force required for tensioning. The hydraulic oil pressure needs to be sent to the hydraulic cylinder through the hydraulic pump, and the tensioning device is pushed by the hydraulic cylinder to achieve the tensioning effect of the steel cable or steel strand. The tensioning device includes clamps, anchors and tensioners. The two ends of the steel strand need to be fixed by the clamps, and then the tensioner is hydraulically driven to make the steel strand stressed to produce a tensioning effect.

[0004] However, the existing mobile tensioning trolley still has the following technical problems during use: Due to the uneven ground or even slope of the construction site, the trolley is prone to tilt during the tensioning process, causing the force applied by the tensioning device (such as the hydraulic jack) to no longer be completely along the predetermined direction of the steel strand, but to generate a lateral force component. This uneven tensioning force distribution will lead to inconsistent tensioning of the steel strand, and may even cause local over-stretching or insufficient tension, affecting the safety and performance of the overall structure; At the same time, the inclination of the tensioning trolley will also cause the center of gravity of the trolley to be unstable, reduce the stability of the trolley, cause the risk of the trolley rolling over, and increase the danger during the construction process. Summary of the invention

[0005] The purpose of the present invention is to address the problems raised in the above background technology and to provide an intelligent mobile tensioning trolley and a method of using the same, which can detect the tilt state of the trolley and automatically adjust the center of gravity layout of the trolley to an optimal state.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An intelligent mobile tensioning trolley, comprising: A frame chassis, two sets of rollers are symmetrically installed on both sides of the frame chassis, a supporting side plate is fixedly connected to the upper end of the frame chassis, and a plurality of tensioning mechanisms distributed in a linear array are arranged on the side walls of the supporting side plate, which are used to apply pre-tensioning stress to the steel strands; Adjusting mechanism for adjusting the center of gravity layout of the vehicle frame chassis. The adjusting mechanism includes a layout cavity opened inside the vehicle frame chassis. A conical block is fixedly connected inside the layout cavity. Multiple groups of baffles distributed in a circumferential array are fixedly connected to the conical block. Multiple layout channels distributed in a circumferential array are opened inside the vehicle frame chassis. An electric control telescopic rod is provided in each layout channel. A push block is fixedly connected to the telescopic end of each electric control telescopic rod. Each group of the baffles has two pieces. A plurality of counterweight balls are provided in the space between the two baffles and in the corresponding layout channel at the corresponding position. Automatic detection mechanism for detecting according to the inclination state of the vehicle frame chassis and automatically adjusting the center of gravity layout of the vehicle frame chassis to the optimal state.

[0007] Preferably, the automatic detection mechanism includes a detection cavity opened inside the vehicle frame chassis. The detection cavity is located directly below the layout cavity. A circular detection block is slidably installed inside the detection cavity. Elastic telescopic plates are hermetically slidably connected to the inner wall on each side of the detection cavity. Each elastic telescopic plate is hermetically slidably connected to its adjacent elastic telescopic plate. A first spring is provided between each elastic telescopic plate and the inner wall on the corresponding side of the detection cavity. A first sealed space is formed between each elastic telescopic plate and the inner wall of the detection cavity and its adjacent elastic telescopic plate. Each first sealed space is filled with a detection liquid. A hydraulic sensor is provided in each first sealed space. A PLC controller is provided at the upper end of the vehicle frame chassis.

[0008] Preferably, the number of the electric control telescopic rods is the same as the number of the hydraulic sensors. Each electric control telescopic rod is electrically connected to the PLC controller through the hydraulic sensor used in cooperation with it.

[0009] Preferably, the elastic telescopic plate includes a fixed outer plate and a chute opened at the end of the fixed outer plate. A moving inner plate is hermetically slidably connected in the chute. A second spring is provided between the moving inner plate and the chute.

[0010] Preferably, a second sealed space is formed between the plurality of elastic telescopic plates and the circular detection block.

[0011] Preferably, a support mechanism is further provided on the peripheral side wall of the vehicle frame chassis for automatically supporting the inclined side when the vehicle frame chassis is inclined. The support mechanism includes a plurality of rotating rods, and the plurality of rotating rods are respectively rotatably connected to the peripheral side wall of the vehicle frame chassis. A support block is fixedly connected to each rotating rod through a connecting rod. A servo motor for driving the rotating rod is provided on the peripheral side wall of the vehicle frame chassis. Four control grooves distributed in a circumferential array are formed inside the vehicle frame chassis, and each control groove communicates with the second sealed space. An opening and closing valve is provided in each control groove, and a piston block is hermetically and slidably connected to a position below the opening and closing valve in each control groove. A distance sensor is provided on the inner bottom wall of the control groove, and a plurality of touch switches are further provided inside the vehicle frame chassis.

[0012] Preferably, the number of the touch switches, the control grooves and the rotating rods are the same. The plurality of touch switches respectively control the opening and closing of the plurality of opening and closing valves. Each distance sensor is electrically connected to the PLC controller through the servo motor used in cooperation with it.

[0013] Preferably, the tensioning mechanism includes a transverse guide rail fixedly connected to the support side plate. A longitudinal guide rail is slidably connected to the transverse guide rail in the horizontal direction. An adjusting guide rail is slidably connected to the longitudinal guide rail in the vertical direction. A slider is slidably connected to the adjusting guide rail, and a tensioning member is fixedly connected to the lower end of the slider.

[0014] A usage method applied to the above-mentioned tensioning trolley includes the following steps: S1. Pretreatment: Push the vehicle frame chassis to move to the designated construction position. Adjust the tensioning member in the horizontal direction through the transverse guide rail, adjust the tensioning member in the vertical direction through the longitudinal guide rail, and adjust the tensioning member back and forth through the adjusting guide rail to achieve three-dimensional precise positioning of the tensioning member. Tension the steel strand to the target stress through the tensioning member; S2. Inclination detection and processing: Detect the inclination state of the vehicle frame chassis through the position of the circular detection block in the detection cavity. When the vehicle frame chassis inclines to any side, the circular detection block inclines to that side under the action of gravity, thereby squeezing the elastic telescopic plate on that side, so that the volume of the first sealed space corresponding to that side decreases, so that the hydraulic pressure of the detection liquid in the first sealed space increases, and the inclination state of the vehicle frame chassis is detected through the hydraulic sensor. The staff adjusts the tensioning member when the vehicle frame chassis inclines; S3. Automatic adjustment processing: When the hydraulic sensor transmits the hydraulic data to the PLC controller through an electrical signal, the PLC controller controls the corresponding side's electric control telescopic rod to contract, so that the counterweight balls between the two baffle plates on the corresponding side enter the layout channel on that side more, so that the center of gravity layout inside the vehicle frame chassis changes, and automatically adjusts the center of gravity layout of the vehicle frame chassis to the best state; S4, automatic support processing: when the circular detection block tilts to one side, the space on the side opposite to the tilting direction of the circular detection block in the second sealed space increases, and the circular detection block squeezes one of the touch-pressure switches to open the opening and closing valve in one of the control grooves, thereby connecting the control groove at this position with the inside of the second sealed space, so that the piston block in the control groove moves upward under low air pressure conditions, and the distance sensor transmits the position of the piston block to the PLC controller through an electrical signal. The PLC controller controls the servo motor in the same direction on the tilted side of the frame chassis to start, drive the rotating rod to rotate, and support the support block on the ground.

[0015] Compared with the existing technology, the advantages of the intelligent mobile tensioning trolley and the use method thereof are: 1. The present invention is provided with an automatic detection mechanism. When the tensioning trolley drives the frame chassis to tilt to any side, the circular detection block tilts to that side under the action of gravity, the volume of the first sealed space corresponding to that side decreases, and the hydraulic pressure increases. Through the detection of the hydraulic pressure of the detection liquid by the hydraulic sensor, the staff can observe the tilting state of the frame chassis in time, and adjust the tensioning parts according to the tilting state to ensure the consistency of the tensioning of the steel strands, avoid the phenomenon of local over-stretching or insufficient tension, and improve the safety and performance of the overall structure.

[0016] 2. The present invention sets an adjustment mechanism. When the hydraulic sensor transmits the hydraulic data of the detected liquid to the PLC controller through an electrical signal, the PLC controller controls the electric-controlled telescopic rod on the corresponding side to contract, so that more counterweight balls between the two baffles on the corresponding side enter the layout channel on that side, thereby changing the center of gravity layout in the frame chassis, and automatically adjusting the center of gravity layout of the frame chassis to an optimal state, thereby improving the intelligence level, simplifying the operation of the staff, ensuring the stability of the trolley during the tensioning process, reducing the shaking caused by unstable center of gravity, and reducing the risk of rollover.

[0017] 3. The present invention sets a supporting mechanism. When the circular detection block tilts to one side, the space on the side opposite to the tilting direction of the circular detection block in the second sealed space increases, and the air pressure decreases, so that the piston block in the control groove moves upward. The distance sensor in the control groove transmits the position of the piston block to the PLC controller through an electrical signal. The PLC controller controls the servo motor in the same direction of the tilted side of the frame chassis to start, drive the rotating rod to rotate, support the support block on the ground, and further improve the stability of the frame chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3Yes Figure 2 An enlarged view of part A in Figure 4 A schematic cross-sectional structure view of the present invention when viewed from above; Figure 5 Yes Figure 4 An enlarged view of part B in Figure 6 A schematic cross-sectional structure view of another position in the present invention; Figure 7 Yes Figure 6 An enlarged view of part C in Figure 8 A schematic partial structure view of the tensioning mechanism in the present invention.

[0019] In the figure: 1, vehicle frame chassis; 11, rollers; 12, support side plates; 2, tensioning mechanism; 21, transverse guide rail; 22, longitudinal guide rail; 23, adjusting guide rail; 24, slider; 3, adjusting mechanism; 31, layout cavity; 32, tapered block; 33, baffle; 34, layout channel; 35, electric control telescopic rod; 36, pushing block; 37, counterweight ball; 4, automatic detection mechanism; 41, detection cavity; 42, circular detection block; 43, elastic telescopic plate; 431, fixed outer plate; 432, chute; 433, moving inner plate; 434, second spring; 44, first spring; 45, first sealed space; 46, hydraulic sensor; 5, second sealed space; 6, support mechanism; 61, rotating rod; 62, support block; 63, servo motor; 64, control groove; 65, piston block; 66, distance sensor. Specific embodiments

[0020] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0021] Embodiment: Refer to Figures 1 to 8 , an intelligent mobile tensioning trolley, comprising: A vehicle frame chassis 1, two groups of rollers 11 are symmetrically installed on both sides of the vehicle frame chassis 1, a support side plate 12 is fixedly connected to the upper end of the vehicle frame chassis 1, and a plurality of groups of tensioning mechanisms 2 distributed in a linear array are arranged on the side wall of the support side plate 12 for applying pre-tension stress to the steel strand; Specifically, the tensioning mechanism 2 includes a transverse guide rail 21 fixedly connected to the support side plate 12, a longitudinal guide rail 22 is slidably connected to the transverse guide rail 21 in the horizontal direction, an adjusting guide rail 23 is slidably connected to the longitudinal guide rail 22 in the vertical direction, a slider 24 is slidably connected in the adjusting guide rail 23, and a tensioning member is fixedly connected to the lower end of the slider 24.

[0022] During actual use, the lateral movement of the longitudinal guide rail 22 on the transverse guide rail 21, the longitudinal movement of the adjustment guide rail 23 on the longitudinal guide rail 22, and the forward and backward movement of the slider 24 within the adjustment guide rail 23 can all be driven by a motor and a threaded rod. The specific working method is as follows: The motor drives the threaded rod to rotate, causing the longitudinal guide rail 22, the adjustment guide rail 23, and the slider 24 to all perform linear movement along the threaded rod at the corresponding position. This is a mature existing technology and will not be elaborated here too much.

[0023] In addition, components such as a jack, a fixture, and an anchor are provided in the tensioning member. The specific working method is as follows: After moving the mobile tensioning trolley to a designated position for fixation and adjusting the position of the tensioning member, the steel strand is tensioned to the target stress by the jack. After reaching the holding time, the oil return and anchoring are controlled by a proportional valve, and the wedge grips statically bite the steel strand to reduce the risk of wire slippage.

[0024] The adjustment mechanism 3 is used to adjust the center of gravity layout of the vehicle frame chassis 1. The adjustment mechanism 3 includes a layout cavity 31 opened inside the vehicle frame chassis 1. A tapered block 32 is fixedly connected inside the layout cavity 31. Multiple groups of baffles 33 distributed in a circumferential array are fixedly connected to the tapered block 32. Multiple layout channels 34 distributed in a circumferential array are opened inside the vehicle frame chassis 1. An electric control telescopic rod 35 is provided in each layout channel 34. The telescopic end of each electric control telescopic rod 35 is fixedly connected with a push block 36; Each group of the baffles 33 is provided with two pieces, and a plurality of counterweight balls 37 are provided in the space between the two baffles 33 and in the corresponding layout channel 34; Specifically, the counterweight balls 37 are made of a high-density material, such as tungsten alloy, which can provide a large mass in a small volume, effectively change the center of gravity of the vehicle frame chassis, and have good wear resistance and corrosion resistance. They are not easily damaged when rolling frequently in the layout channel, ensuring long-term stable use and meeting the requirements of the complex environment at the engineering site.

[0025] Specifically, the layout channel 34 is designed with an inclination angle of 5° - 10°. This angle range not only ensures that the counterweight balls 37 can roll smoothly under the action of the electric control telescopic rod 35 pushing the push block 36, avoiding difficult movement of the counterweight balls 37 due to too small an angle, but also prevents the balls from sliding by themselves without external force when the angle is too large, affecting the accuracy of center of gravity adjustment, and ensuring that the center of gravity layout can be accurately adjusted under different working conditions.

[0026] Specifically, the push block 36 and the counterweight balls 37 adopt a rolling contact method. A ball bearing can be installed at the upper end of the push block 36. The contact area is small and the friction is low, making it smoother for the push block 36 to push the counterweight balls 37, reducing energy loss, reducing the wear of the counterweight balls 37 and the push block 36, improving the response speed of the adjustment mechanism 3, and ensuring rapid and accurate adjustment of the center of gravity layout.

[0027] An automatic detection mechanism 4 is used to detect according to the inclination state of the vehicle frame chassis 1 and automatically adjust the center of gravity layout of the vehicle frame chassis 1 to the optimal state. The automatic detection mechanism 4 includes a detection cavity 41 opened inside the vehicle frame chassis 1. The detection cavity 41 is located directly below the layout cavity 31. A circular detection block 42 is slidably installed inside the detection cavity 41. Elastic telescopic plates 43 are hermetically slidably connected to the inner walls on each side of the detection cavity 41. Each elastic telescopic plate 43 is hermetically slidably connected to its adjacent elastic telescopic plate 43. A first spring 44 is provided between each elastic telescopic plate 43 and the inner wall of the detection cavity 41 on the corresponding side. A first sealed space 45 is formed between each elastic telescopic plate 43 and the inner wall of the detection cavity 41 and its adjacent elastic telescopic plate 43. Each first sealed space 45 is filled with a detection liquid. A hydraulic sensor 46 is provided inside each first sealed space 45. A PLC controller is provided at the upper end of the vehicle frame chassis 1.

[0028] Specifically, the detection liquid uses low-viscosity mineral oil, which can not only ensure rapid pressure transmission but also avoid corrosion of the equipment.

[0029] Specifically, the number of the electric control telescopic rods 35 is the same as the number of the hydraulic sensors 46, and each electric control telescopic rod 35 is electrically connected to the PLC controller through the hydraulic sensor 46 used in cooperation with it.

[0030] Specifically, the elastic telescopic plate 43 includes a fixed outer plate 431 and a sliding groove 432 opened at the end of the fixed outer plate 431. A moving inner plate 433 is hermetically slidably connected inside the sliding groove 432. A second spring 434 is provided between the moving inner plate 433 and the sliding groove 432. The second spring 434 always applies a thrust to the moving inner plate 433, so that any elastic telescopic plate 43 is always hermetically connected to its adjacent elastic telescopic plate 43.

[0031] Specifically, when the circular detection block 42 moves to any side, it can push the elastic telescopic plate 43 on that side to move. At the same time, another elastic telescopic plate 43 whose telescopic end is in sealed contact with this elastic telescopic plate 43 always clings to this elastic telescopic plate 43 under the elastic force of the second spring 434, while the positions and telescopic states of the other two elastic telescopic plates 43 remain unchanged, ensuring the sealing performance inside each first sealed space 45.

[0032] Specifically, the second spring 434 is made of high-strength spring steel, which is heat-treated to improve its elasticity and fatigue strength, providing a stable elastic force to make the movable inner plate 433 fit tightly against the fixed outer plate 431. The seal is made of a rubber sealing ring, which is installed in the groove at the contact point between the movable inner plate 433 and the fixed outer plate 431, and the gap is filled with the good elasticity and sealing properties of rubber. In terms of manufacturing process, the sealing surface is finely processed to ensure flatness and smoothness and reduce the wear of the sealing material. At the same time, a rubber sealing ring can also be used to seal between two adjacent elastic telescopic plates 43 to ensure that the first sealing space 45 and the second sealing space 5 are well sealed, thereby improving the detection and control accuracy.

[0033] In view of the problem in the prior art that the trolley is prone to tilt during the tensioning process, resulting in the force applied by the tensioning device no longer being completely along the predetermined direction of the steel strand, affecting the safety and performance of the overall structure, the present invention provides an automatic detection mechanism 4. When the tensioning trolley drives the frame chassis 1 to tilt to either side, the circular detection block 42 tilts to that side under the action of gravity, thereby squeezing the elastic expansion plate 43 on that side, so that the volume of the first sealed space 45 corresponding to that side is reduced, thereby increasing the hydraulic pressure of the detection liquid in the first sealed space 45. The detection of the hydraulic pressure of the detection liquid by the hydraulic sensor 46 enables the staff to observe the tilt state of the frame chassis 1 in time, and adjust the tensioning parts according to the tilt state, so as to ensure the consistency of the tensioning of the steel strands, avoid local over-stretching or insufficient tension, and improve the safety and performance of the overall structure.

[0034] In view of the problem that the tilt of the tensioning trolley in the prior art will also cause the center of gravity of the trolley to be unstable, reduce the stability of the trolley, and cause the risk of the trolley to roll over, the present invention sets an adjustment mechanism 3. When the hydraulic sensor 46 transmits the hydraulic data of the detected liquid to the PLC controller through an electrical signal, the PLC controller controls the electric control telescopic rod 35 on the corresponding side to contract, so that the counterweight ball 37 between the two baffles 33 on the corresponding side enters more into the layout channel 34 on this side, so that the center of gravity layout in the frame chassis 1 is changed, and the center of gravity layout of the frame chassis 1 is automatically adjusted to the optimal state, thereby improving the level of intelligence, simplifying the operation of the staff, ensuring the stability of the trolley during the tensioning process, reducing the shaking caused by unstable center of gravity, and reducing the risk of rollover.

[0035] A second sealed space 5 is formed between the plurality of elastic retractable plates 43 and the circular detection block 42 .

[0036] A support mechanism 6 is also provided on the peripheral side wall of the vehicle frame chassis 1 for automatically supporting the inclined side when the vehicle frame chassis 1 is inclined. The support mechanism 6 includes a plurality of rotating rods 61, and the plurality of rotating rods 61 are respectively rotatably connected to the peripheral side wall of the vehicle frame chassis 1. A support block 62 is fixedly connected to each rotating rod 61 through a connecting rod. A servo motor 63 for driving the rotating rod 61 is provided on the peripheral side wall of the vehicle frame chassis 1. Four control grooves 64 distributed in a circumferential array are formed inside the vehicle frame chassis 1, and each control groove 64 communicates with the second sealed space 5. An opening and closing valve is provided in each control groove 64. A piston block 65 is hermetically and slidably connected to a position below the opening and closing valve in each control groove 64. A distance sensor 66 is provided on the inner bottom wall of the control groove 64. A plurality of touch switches are also provided inside the vehicle frame chassis 1.

[0037] Specifically, the number of the touch switches, the control grooves 64 and the rotating rods 61 is the same. The plurality of touch switches respectively control the opening and closing of the plurality of opening and closing valves. Each distance sensor 66 is electrically connected to the PLC controller through the servo motor 63 used in cooperation with it.

[0038] Specifically, each control groove 64 corresponds to an inclination of the vehicle frame chassis 1 in a specific direction. Based on the four sides of the vehicle frame chassis 1, the four control grooves 64 respectively correspond to the four inclination directions of front, rear, left and right. The touch switches are installed on the movement track of the circular detection block 42 according to this corresponding relationship. When the vehicle frame chassis 1 inclines to a certain side, the circular detection block 42 presses the touch switch in the corresponding direction, and the opening and closing valve of the corresponding control groove is opened, realizing a precise response to the inclination direction.

[0039] Specifically, when the circular detection block 42 inclines to one side, the space on the side opposite to the inclination direction in the second sealed space 5 increases, and the air pressure decreases to form a pressure difference. After the control groove 64 communicates with the second sealed space 5, the piston block 65 moves upward under the action of the pressure difference. The distance sensor 66 monitors the position of the piston block 65 in real time and transmits the signal to the PLC controller. The PLC controller presets a pressure threshold. When the pressure difference reaches the threshold, the servo motor 63 in the corresponding inclination direction is controlled to start, driving the support block 62 to rotate and support the ground, ensuring effective support before the inclination degree of the vehicle frame chassis 1 reaches a certain dangerous value.

[0040] It is worth mentioning that in the present invention, by providing the support mechanism 6, when the circular detection block 42 tilts to one side, the space on the side opposite to the tilting direction of the circular detection block 42 in the second sealed space 5 increases. At the same time, the circular detection block 42 can squeeze one of the touch switches, so that the opening and closing valve in one of the control grooves 64 is opened, and then the control groove 64 at this position is communicated with the inside of the second sealed space 5. The increase in the space in the second sealed space 5 will cause the air pressure to decrease, so that the piston block 65 in the control groove 64 moves upward. The distance sensor 66 in the control groove 64 transmits the position of the piston block 65 to the PLC controller through an electric signal. The PLC controller controls the servo motor 63 on the same side as the tilted side of the vehicle frame chassis 1 to start, drives the rotating rod 61 to rotate, and supports the support block 62 on the ground, further improving the stability of the vehicle frame chassis 1.

[0041] A usage method applied to the above tensioning trolley includes the following steps: S1. Pretreatment: Push the vehicle frame chassis 1 to move to the designated construction position, adjust the tensioning member in the horizontal direction through the transverse guide rail 21, adjust the tensioning member in the vertical direction through the longitudinal guide rail 22, and adjust the tensioning member back and forth through the adjustment guide rail 23 to achieve three-dimensional precise positioning of the tensioning member. Tension the steel strand to the target stress through the tensioning member; S2. Tilt detection and processing: Detect the tilt state of the vehicle frame chassis 1 through the position of the circular detection block 42 in the detection cavity 41. When the vehicle frame chassis 1 tilts to any side, the circular detection block 42 tilts to this side under the action of gravity, thereby squeezing the elastic telescopic plate 43 on this side, so that the volume of the first sealed space 45 corresponding to this side decreases, so that the hydraulic pressure of the detection liquid in the first sealed space 45 increases, and the tilt state of the vehicle frame chassis 1 is detected through the hydraulic sensor 46. The staff adjusts the tensioning member when the vehicle frame chassis 1 tilts; S3. Automatic adjustment processing: When the hydraulic sensor 46 transmits the hydraulic data to the PLC controller through an electric signal, the PLC controller controls the corresponding side of the electric control telescopic rod 35 to contract, so that the counterweight balls 37 between the two baffles 33 on the corresponding side enter the layout channel 34 on this side more, so that the center of gravity layout in the vehicle frame chassis 1 changes, and automatically adjusts the center of gravity layout of the vehicle frame chassis 1 to the optimal state; S4. Automatic support processing: When the circular detection block 42 tilts to one side, the space on the side opposite to the tilting direction of the circular detection block 42 in the second sealing space 5 increases. The circular detection block 42 squeezes one of the touch switches, causing the opening and closing valve in one of the control grooves 64 to open. As a result, the control groove 64 at this position communicates with the inside of the second sealing space 5, enabling the piston block 65 in the control groove 64 to displace upward under the condition of low air pressure. The distance sensor 66 transmits the position of the piston block 65 to the PLC controller via an electrical signal. The PLC controller controls the servo motor 63 on the same side as the tilted side of the vehicle frame chassis 1 to start, driving the rotating rod 61 to rotate and supporting the support block 62 on the ground.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent mobile tensioning trolley, characterized in that, Including: A frame chassis (1), on both sides of the frame chassis (1), two groups of rollers (11) are symmetrically installed. At the upper end of the frame chassis (1), a support side plate (12) is fixedly connected. On the side wall of the support side plate (12), a plurality of tensioning mechanisms (2) distributed in a linear array are provided for applying a pre-tensile stress to the steel strand; An adjusting mechanism (3) for adjusting the center of gravity layout of the frame chassis (1). The adjusting mechanism (3) includes a layout cavity (31) opened inside the frame chassis (1). Inside the layout cavity (31), a conical block (32) is fixedly connected. On the conical block (32), a plurality of baffles (33) distributed in a circumferential array are fixedly connected. Inside the frame chassis (1), a plurality of layout channels (34) distributed in a circumferential array are opened. Inside each layout channel (34), an electric control telescopic rod (35) is provided. The telescopic end of each electric control telescopic rod (35) is fixedly connected with a push block (36); Each group of the baffles (33) has two pieces, and a plurality of counterweight balls (37) are provided in the space between the two baffles (33) and in the corresponding layout channels (34); An automatic detection mechanism (4) for detecting according to the inclination state of the frame chassis (1) and automatically adjusting the center of gravity layout of the frame chassis (1) to the optimal state.

2. The intelligent mobile tensioning trolley according to claim 1, characterized in that, The automatic detection mechanism (4) includes a detection cavity (41) opened inside the frame chassis (1). The detection cavity (41) is located directly below the layout cavity (31). Inside the detection cavity (41), a circular detection block (42) is slidably installed. On each inner wall of each side of the detection cavity (41), an elastic telescopic plate (43) is hermetically slidably connected. Each elastic telescopic plate (43) is hermetically slidably connected with its adjacent elastic telescopic plate (43). Between each elastic telescopic plate (43) and the inner wall of the corresponding side of the detection cavity (41), a first spring (44) is provided. Between each elastic telescopic plate (43) and the inner wall of the detection cavity (41) and its adjacent elastic telescopic plate (43), a first sealed space (45) is formed. Inside each first sealed space (45), a detection liquid is filled. Inside each first sealed space (45), a hydraulic sensor (46) is provided. At the upper end of the frame chassis (1), a PLC controller is provided.

3. The intelligent mobile tensioning trolley according to claim 2, characterized in that, The number of the electric control telescopic rods (35) is the same as the number of the hydraulic sensors (46), and each electric control telescopic rod (35) is electrically connected with the PLC controller through the hydraulic sensor (46) used in cooperation with it.

4. The intelligent mobile tensioning trolley according to claim 2, characterized in that, The elastic telescopic plate (43) includes a fixed outer plate (431) and a sliding groove (432) opened at the end of the fixed outer plate (431). Inside the sliding groove (432), a moving inner plate (433) is hermetically slidably connected. Between the moving inner plate (433) and the sliding groove (432), a second spring (434) is provided.

5. The intelligent mobile tensioning trolley according to claim 2, characterized in that A second sealed space (5) is formed between the plurality of elastic telescopic plates (43) and the circular detection block (42).

6. The intelligent mobile tensioning trolley according to claim 5, characterized in that, A support mechanism (6) is also provided on the peripheral side wall of the frame chassis (1) for automatically supporting the inclined side when the frame chassis (1) tilts. The support mechanism (6) includes a plurality of rotating rods (61) which are respectively rotatably connected to the peripheral side wall of the frame chassis (1). A support block (62) is fixedly connected to each rotating rod (61) through a connecting rod. A servo motor (63) for driving the rotating rod (61) is provided on the peripheral side wall of the frame chassis (1). Four control grooves (64) distributed in a circumferential array are formed inside the frame chassis (1). Each control groove (64) communicates with the second sealed space (5). An opening and closing valve is provided in each control groove (64). A piston block (65) is hermetically and slidably connected to the position below the opening and closing valve in each control groove (64). A distance sensor (66) is provided on the inner bottom wall of the control groove (64). A plurality of touch switches are also provided inside the frame chassis (1).

7. The intelligent mobile tensioning trolley according to claim 6, wherein, The number of the touch switches, the control grooves (64) and the rotating rods (61) is the same. The plurality of touch switches respectively control the opening and closing of the plurality of opening and closing valves. Each distance sensor (66) is electrically connected to a PLC controller through a servo motor (63) cooperating with it.

8. The intelligent mobile tensioning trolley according to claim 1, wherein The tensioning mechanism (2) includes a transverse guide rail (21) fixedly connected to the support side plate (12). A longitudinal guide rail (22) is slidably connected to the transverse guide rail (21) in the horizontal direction. An adjusting guide rail (23) is slidably connected to the longitudinal guide rail (22) in the vertical direction. A slider (24) is slidably connected to the adjusting guide rail (23). A tensioning member is fixedly connected to the lower end of the slider (24).

9. A method of using the tensioning trolley according to any one of claims 1-8, characterized in that It includes the following steps: S1. Pretreatment: Push the frame chassis (1) to move to the designated construction position. Adjust the tensioning member in the horizontal direction through the transverse guide rail (21), adjust the tensioning member in the vertical direction through the longitudinal guide rail (22), and adjust the tensioning member back and forth through the adjusting guide rail (23) to achieve three-dimensional precise positioning of the tensioning member. Tension the steel strand to the target stress through the tensioning member. S2. Tilt detection and processing: Detect the tilt state of the frame chassis (1) through the position of the circular detection block (42) in the detection cavity (41). When the frame chassis (1) tilts to any side, the circular detection block (42) tilts to that side under the action of gravity, thereby squeezing the elastic telescopic plate (43) on that side, reducing the volume of the corresponding first sealed space (45) on that side, increasing the hydraulic pressure of the detection liquid in the first sealed space (45), and detecting the tilt state of the frame chassis (1) through the hydraulic sensor (46). The staff adjusts the tensioning member when the frame chassis (1) tilts. S3. Automatic adjustment process: When the hydraulic sensor (46) transmits hydraulic data to the PLC controller via an electrical signal, the PLC controller controls the corresponding electro-hydraulic telescopic rod (35) to contract, so that the counterweight balls (37) between the two baffles (33) on the corresponding side enter the layout channel (34) on that side more, causing a change in the center-of-gravity layout within the vehicle chassis (1) and automatically adjusting the center-of-gravity layout of the vehicle chassis (1) to the optimal state; S4. Automatic support process: When the circular detection block (42) tilts to one side, the space on the side opposite to the tilting direction of the circular detection block (42) within the second sealed space (5) increases. The circular detection block (42) squeezes one of the touch switches, causing the opening and closing valve within one of the control slots (64) to open. As a result, the control slot (64) at this position is connected to the interior of the second sealed space (5), enabling the piston block (65) within the control slot (64) to displace upward under low-pressure conditions. The distance sensor (66) transmits the position of the piston block (65) to the PLC controller via an electrical signal, and the PLC controller controls the servo motor (63) on the same side as the tilted side of the vehicle chassis (1) to start, driving the rotating rod (61) to rotate and supporting the support block (62) on the ground.

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