Intelligent mobile tensioning trolley and method of using the same

Abstract

The present invention belongs to the technical field of bridge engineering construction equipment, and in particular relates to an intelligent mobile tensioning trolley and a method for using the same, comprising: a frame chassis, two sets of rollers symmetrically installed on both sides of the frame chassis, a support side plate fixedly connected to the upper end of the frame chassis, a plurality of tensioning mechanisms distributed in a linear array on the side walls of the support side plates, for applying pre-tensioning stress to the steel strands; and an adjustment mechanism for adjusting the center of gravity layout of the frame chassis. The present invention provides an automatic detection mechanism. When the tensioning trolley drives the frame chassis to tilt to either side, the circular detection block tilts toward that side under the action of gravity, the volume of the first sealed space corresponding to that side decreases, and the hydraulic pressure increases. The hydraulic sensor detects the hydraulic pressure of the detection liquid, so that the staff can observe the tilting state of the frame chassis in a timely manner and adjust the tensioning members according to the tilting state to ensure the consistency of the tensioning of the steel strands.

Description

Technical Field

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

[0002] Mobile tensioning trolleys are commonly used in engineering fields such as bridge construction, steel structure installation, and tunnel construction. They are primarily used to apply tension to stretch prestressed steel strands or cables, thereby reinforcing or adjusting the structure. They are often equipped with hydraulic and electric systems, as well as tensioning equipment, enabling precise tensioning operations on 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 parts such as clamps, anchors and tensioners. The two ends of the steel strand need to be fixed by the clamps, and then the tensioner is driven by hydraulic pressure to make the steel strand subject to force to produce a tensioning effect.

[0004] However, the existing mobile tensioning trolley still has the following technical problems during use:

[0005] Due to the uneven ground or even slope of the construction site, the trolley is prone to tilting during the tensioning process. As a result, the force applied by the tensioning device (such as the hydraulic jack) is no longer completely along the predetermined direction of the steel strand, but instead generates a lateral force component. This uneven tensioning force distribution leads 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.

[0006] At the same time, the tilt 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

[0007] The purpose of the present invention is to address the problems raised in the above background technology and provide an intelligent mobile tensioning trolley and its use method that can detect the tilt state of the trolley and automatically adjust the center of gravity layout of the trolley to an optimal state.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An intelligent mobile tensioning trolley, comprising:

[0010] A frame chassis, two sets of rollers are symmetrically installed on both sides of the frame chassis, the upper end of the frame chassis is fixedly connected to a supporting side plate, and the side walls of the supporting side plate are provided with multiple sets of tensioning mechanisms distributed in a linear array for applying pre-tensioning stress to the steel strands;

[0011] An adjustment mechanism for adjusting the center of gravity layout of the frame chassis, the adjustment mechanism comprising a layout cavity defined within the frame chassis, a conical block fixedly connected to the interior of the layout cavity, a plurality of baffles distributed in a circumferential array fixedly connected to the conical block, a plurality of layout channels defined within the frame chassis distributed in a circumferential array, each of the layout channels being provided with an electrically controlled telescopic rod, and a push block fixedly connected to the telescopic end of each electrically controlled telescopic rod;

[0012] Each set of baffles is provided with two pieces, and a plurality of weighted balls are provided in the space between the two baffles and in the layout channels at corresponding positions;

[0013] The automatic detection mechanism is used to detect the tilt state of the frame chassis and automatically adjust the center of gravity layout of the frame chassis to an optimal state.

[0014] Preferably, the automatic detection mechanism includes a detection cavity opened inside the frame chassis, the detection cavity is located directly below the layout cavity, a circular detection block is slidably installed inside the detection cavity, and an elastic telescopic plate is sealed and slidably connected to the inner wall of each side of the detection cavity, each of the elastic telescopic plates is sealed and slidably connected to its adjacent elastic telescopic plate, a first spring is provided between each elastic telescopic plate and the inner wall of 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 of the first sealed spaces is filled with detection liquid, each of the first sealed spaces is provided with a hydraulic sensor, and a PLC controller is provided at the upper end of the frame chassis.

[0015] Preferably, the number of the electrically controlled telescopic rods is the same as the number of the hydraulic sensors, and each electrically controlled telescopic rod is electrically connected to the PLC controller via the hydraulic sensor used in conjunction with the rod.

[0016] Preferably, the elastic telescopic plate includes a fixed outer plate and a slide groove opened at the end of the fixed outer plate, a movable inner plate is sealingly and slidingly connected in the slide groove, and a second spring is provided between the movable inner plate and the slide groove.

[0017] Preferably, a second sealed space is formed between the plurality of elastic stretch plates and the circular detection block.

[0018] Preferably, a supporting mechanism is further provided on the peripheral side wall of the frame chassis, for automatically supporting the tilted side when the frame chassis tilts, the supporting mechanism includes a plurality of rotating rods, which are rotatably connected to the peripheral side wall of the frame chassis respectively, and each of the rotating rods is fixedly connected to a supporting block through a connecting rod, and a servo motor for driving the rotating rod is provided on the peripheral side wall of the frame chassis, and four control grooves distributed in a circumferential array are opened inside the frame chassis, each of the control grooves is communicated with the second sealed space, and an opening and closing valve is provided in each control groove, and a piston block is airtightly slidably connected to the position below the opening and closing valve in each control groove, and a distance sensor is provided on the inner bottom wall of the control groove, and a plurality of touch pressure switches are also provided inside the frame chassis.

[0019] Preferably, the number of the touch-pressure switches, control slots and rotating rods are the same, and the multiple touch-pressure switches respectively control the opening and closing of multiple opening and closing valves. Each distance sensor is electrically connected to the PLC controller through a servo motor used in conjunction with it.

[0020] Preferably, the tensioning mechanism includes a transverse guide rail fixedly connected to the supporting side panel, a longitudinal guide rail is slidably connected to the transverse guide rail in the horizontal direction, an adjustment guide rail is slidably connected to the longitudinal guide rail in the vertical direction, a slider is slidably connected in the adjustment guide rail, and a tensioning member is fixedly connected to the lower end of the slider.

[0021] A method for using the above-mentioned tensioning trolley comprises the following steps:

[0022] S1. Pre-processing: Move the chassis to the designated construction location, adjust the tensioning members horizontally through the transverse guide rails, adjust the tensioning members vertically through the longitudinal guide rails, and adjust the tensioning members forward and backward through the adjustment rails to achieve three-dimensional precise positioning of the tensioning members. Tension the steel strands to the target stress through the tensioning members.

[0023] S2. Tilt detection process: The tilt state of the chassis is detected by the position of the circular detection block in the detection chamber. When the chassis tilts to either side, the circular detection block tilts toward that side under the action of gravity, thereby squeezing the elastic expansion plate on that side, causing the volume of the first sealed space corresponding to that side to decrease, thereby increasing the hydraulic pressure of the detection liquid in the first sealed space. The tilt state of the chassis is detected by the hydraulic sensor, and the staff adjusts the tensioning member when the chassis tilts.

[0024] S3. Automatic adjustment processing: When the hydraulic sensor transmits hydraulic data to the PLC controller via an electrical signal, the PLC controller controls the electric telescopic rod on the corresponding side to retract, so that more of the counterweight balls between the two baffles on the corresponding side enter the layout channel on that side, causing the center of gravity layout in the frame chassis to change, and automatically adjusting the center of gravity layout of the frame chassis to the optimal state;

[0025] 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, so that the on-off valve in one of the control grooves opens, and then the control groove at this position is connected with the interior of the second sealed space, so that the piston block in the control groove moves upward under low air pressure conditions. 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.

[0026] Compared with existing technologies, the advantages of this intelligent mobile tensioning trolley and its use method are:

[0027] 1. The present invention is provided with an automatic detection mechanism. When the tensioning trolley drives the frame chassis to tilt to either side, the circular detection block tilts toward that side under the action of gravity. The volume of the first sealed space corresponding to that side decreases and the hydraulic pressure increases. The hydraulic sensor detects the hydraulic pressure of the detection liquid, so that 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 steel strand tensioning, avoid local over-stretching or insufficient tension, and improve the safety and performance of the overall structure.

[0028] 2. The present invention is provided with 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 retract, so that more counterweight balls between the two baffles on the corresponding side enter the layout channel on that side, causing the center of gravity layout in the frame chassis to change, and automatically adjusting the center of gravity layout of the frame chassis to an 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.

[0029] 3. The present invention provides a support mechanism. When the circular detection block tilts to one side, the space in the second sealed space on the side opposite to the tilting direction of the circular detection block increases, and the air pressure decreases, causing the piston block in the control groove to move 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 as the tilted side of the frame chassis to start, driving the rotating rod to rotate, supporting the support block on the ground, and further improving the stability of the frame chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic cross-sectional view of the present invention;

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention when viewed from above;

[0034] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0035] Figure 6 It is a schematic cross-sectional view of another position in the present invention;

[0036] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0037] Figure 8 It is a partial structural diagram of the tensioning mechanism in the present invention.

[0038] In the figure: 1. frame chassis; 11. roller; 12. supporting side plate; 2. tensioning mechanism; 21. transverse guide rail; 22. longitudinal guide rail; 23. adjusting guide rail; 24. slider; 3. adjusting mechanism; 31. layout cavity; 32. conical block; 33. baffle; 34. layout channel; 35. electric telescopic rod; 36. push block; 37. counterweight ball; 4. automatic detection mechanism; 41. detection cavity; 42. circular detection block; 43. elastic telescopic plate; 431. fixed outer plate; 432. slide groove; 433. movable inner plate; 434. second spring; 44. first spring; 45. first sealed space; 46. hydraulic sensor; 5. second sealed space; 6. supporting mechanism; 61. rotating rod; 62. supporting block; 63. servo motor; 64. control groove; 65. piston block; 66. distance sensor. DETAILED DESCRIPTION

[0039] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0040] Example: Refer to Figures 1 to 8 , an intelligent mobile tensioning trolley, comprising:

[0041] A frame chassis 1, with two sets of rollers 11 symmetrically mounted on both sides of the frame chassis 1, a support side plate 12 fixedly connected to the upper end of the frame chassis 1, and a plurality of tensioning mechanisms 2 distributed in a linear array on the side walls of the support side plate 12 for applying pre-tensioning stress to the steel strands;

[0042] Specifically, the tensioning mechanism 2 includes a transverse guide rail 21 fixedly connected to the supporting side plate 12, a longitudinal guide rail 22 is slidably connected to the transverse guide rail 21 in the horizontal direction, an adjustment guide rail 23 is slidably connected to the longitudinal guide rail 22 in the vertical direction, a slider 24 is slidably connected in the adjustment guide rail 23, and a tensioning member is fixedly connected to the lower end of the slider 24.

[0043] During actual use, the lateral movement of the longitudinal guide rail 22 on the lateral guide rail 21, the longitudinal movement of the adjusting guide rail 23 on the longitudinal guide rail 22, and the forward and backward movement of the slider 24 in the adjusting guide rail 23 can all be driven by the motor and the threaded rod. The specific working method is: the threaded rod is driven to rotate by the motor, so that the longitudinal guide rail 22, the adjusting guide rail 23 and the slider 24 all move linearly along the threaded rod at the corresponding position. This is an existing mature technology and will not be elaborated on here.

[0044] In addition, the tensioning parts are equipped with jacks, clamps, anchors and other components. The specific working method is: after the mobile tensioning trolley is moved to the specified position and fixed, and the position of the tensioning parts is adjusted, the steel strands are tensioned to the target stress through the jack. After the holding time is reached, the return oil anchor is controlled by the proportional valve, and the clamps statically bite the steel strands to reduce the risk of wire slippage.

[0045] An adjustment mechanism 3 is provided for adjusting the center of gravity layout of the frame chassis 1. The adjustment mechanism 3 includes a layout cavity 31 defined within the frame chassis 1. A conical block 32 is fixedly connected to the interior of the layout cavity 31. A plurality of baffles 33 arranged in a circumferential array are fixedly connected to the conical block 32. A plurality of layout channels 34 arranged in a circumferential array are defined within the frame chassis 1. Each layout channel 34 is provided with an electrically controlled telescopic rod 35. A push block 36 is fixedly connected to the telescopic end of each electrically controlled telescopic rod 35.

[0046] Each set of baffles 33 is provided with two pieces, and a plurality of weighted balls 37 are provided in the space between the two baffles 33 and in the layout channels 34 at corresponding positions;

[0047] Specifically, the counterweight ball 37 is made of high-density material, such as tungsten alloy, which can provide a larger mass in a smaller volume, effectively changing the center of gravity of the frame chassis. It has good wear resistance and corrosion resistance, and is not easily damaged by frequent rolling in the layout channel, ensuring long-term stable use and meeting the complex environment requirements of the engineering site.

[0048] Specifically, the layout channel 34 is designed to have an inclination angle of 5°-10°. This angle range ensures that the counterweight ball 37 can roll smoothly under the action of the push block 36 pushed by the electric telescopic rod 35, avoiding the difficulty in moving the counterweight ball 37 due to too small an angle, and prevents the ball from sliding on its own when there is no external force due to too large an angle, thereby affecting the accuracy of the center of gravity adjustment, ensuring that the center of gravity layout can be accurately adjusted under different working conditions.

[0049] Specifically, the push block 36 and the counterweight ball 37 adopt a rolling contact method, and a ball bearing can be installed on the upper end of the push block 36, with a small contact area and low friction, so that the push block 36 can push the counterweight ball 37 more smoothly, reduce energy loss, reduce wear on the counterweight ball 37 and the push block 36, improve the response speed of the adjustment mechanism 3, and ensure that the center of gravity layout is adjusted quickly and accurately.

[0050] The automatic detection mechanism 4 is used to detect the tilt state of the frame chassis 1 and automatically adjust the center of gravity layout of the frame chassis 1 to an optimal state. 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. A circular detection block 42 is slidably installed inside the detection cavity 41. An elastic retractable plate 43 is sealed and slidably connected to the inner wall of each side of the detection cavity 41. Each elastic retractable plate 43 is sealed and slidably connected to its adjacent elastic retractable plate 43. A first spring 44 is provided between each elastic retractable plate 43 and the inner wall of the corresponding side of the detection cavity 41. A first sealed space 45 is formed between each elastic retractable plate 43 and the inner wall of the detection cavity 41 and its adjacent elastic retractable plate 43. Each first sealed space 45 is filled with detection liquid. Each first sealed space 45 is provided with a hydraulic sensor 46. A PLC controller is provided at the upper end of the frame chassis 1.

[0051] Specifically, the detection liquid uses low-viscosity mineral oil, which can ensure rapid pressure transmission while avoiding corrosion to the equipment.

[0052] Specifically, the number of the electrically controlled telescopic rods 35 is the same as the number of the hydraulic sensors 46 , and each electrically controlled telescopic rod 35 is electrically connected to the PLC controller via the hydraulic sensor 46 used in conjunction with it.

[0053] Specifically, the elastic telescopic plate 43 includes a fixed outer plate 431 and a slide groove 432 opened at the end of the fixed outer plate 431. The slide groove 432 is sealed and slidably connected with a movable inner plate 433. A second spring 434 is provided between the movable inner plate 433 and the slide groove 432. The second spring 434 always applies a thrust to the movable inner plate 433, so that any elastic telescopic plate 43 is always sealed and connected to the adjacent elastic telescopic plate 43.

[0054] Specifically, when the circular detection block 42 moves to either side, it can push the elastic stretch plate 43 on that side to move. At the same time, the other elastic stretch plate 43 whose telescopic end is in sealing contact with the elastic stretch plate 43 is always tightly attached to the elastic stretch plate 43 under the elastic force of the second spring 434, while the positions and telescopic states of the other two elastic stretch plates 43 remain unchanged, thereby ensuring the sealing of each first sealed space 45.

[0055] Specifically, the second spring 434 is made of high-strength spring steel, which is heat-treated to improve its elasticity and fatigue strength, providing 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 the 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, rubber sealing rings 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.

[0056] 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 toward 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 tilting state of the frame chassis 1 in time, and adjust the tensioning parts according to the tilting state to ensure the consistency of the steel strand tensioning, avoid local over-stretching or insufficient tension, and improve the safety and performance of the overall structure.

[0057] In view of the problem that the tilt of the tensioning trolley in the prior art will cause the center of gravity of the trolley to be unstable, reduce the stability of the trolley, and cause the trolley to have the risk of rollover, 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-controlled telescopic rod 35 on the corresponding side 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 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 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.

[0058] A second sealed space 5 is formed between the plurality of elastic stretch plates 43 and the circular detection block 42 .

[0059] A supporting mechanism 6 is also provided on the peripheral side wall of the frame chassis 1, which is used to automatically support the tilted side when the frame chassis 1 tilts. The supporting mechanism 6 includes multiple rotating rods 61, which are rotatably connected to the peripheral side wall of the frame chassis 1 respectively, and each of the rotating rods 61 is fixedly connected to a support block 62 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 opened inside the frame chassis 1, and each of the control grooves 64 is connected to the second sealed space 5. An opening and closing valve is provided in each of the control grooves 64, and a piston block 65 is airtightly slidably connected at a position below the opening and closing valve in each of the control grooves 64. A distance sensor 66 is provided on the inner bottom wall of the control groove 64, and a plurality of touch-pressure switches are also provided inside the frame chassis 1.

[0060] Specifically, the number of the touch-pressure switches, control slots 64 and rotating rods 61 are the same, and multiple touch-pressure switches respectively control the opening and closing of multiple opening and closing valves. Each distance sensor 66 is electrically connected to the PLC controller through the servo motor 63 used in conjunction with it.

[0061] Specifically, each control slot 64 corresponds to a specific direction of tilt of the frame chassis 1. Taking the four sides of the frame chassis 1 as a reference, the four control slots 64 correspond to the four tilt directions of front, rear, left, and right, respectively. The touch-pressure switch is installed on the movement trajectory of the circular detection block 42 according to this corresponding relationship. When the frame chassis 1 tilts to a certain side, the circular detection block 42 squeezes the touch-pressure switch in the corresponding direction, opens the opening and closing valve of the corresponding control slot, and realizes precise response to the tilt direction.

[0062] Specifically, when the circular detection block 42 tilts to one side, the space on the side opposite to the tilting direction in the second sealed space 5 increases, the air pressure decreases to form a pressure difference, and after the control groove 64 is connected to 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 corresponding to the tilting direction is controlled to start, driving the support block 62 to rotate and support the ground, ensuring that effective support is provided before the tilt degree of the frame chassis 1 reaches a certain dangerous value.

[0063] It is worth mentioning that the present invention sets a support mechanism 6. When the circular detection block 42 tilts to one side, the space in the second sealed space 5 on the side opposite to the tilting direction of the circular detection block 42 increases. At the same time, the circular detection block 42 can squeeze one of the touch-pressure 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 connected 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 is displaced upward. The distance sensor 66 in the control groove 64 transmits the position of the piston block 65 to the PLC controller through an electrical signal. The PLC controller controls the servo motor 63 in the same direction as the tilted side of the frame chassis 1 to start, drive the rotating rod 61 to rotate, support the support block 62 on the ground, and further improve the stability of the frame chassis 1.

[0064] A method for using the above-mentioned tensioning trolley comprises the following steps:

[0065] S1. Pre-processing: Move the chassis 1 to the designated construction location, adjust the tensioning member horizontally via the transverse guide rail 21, adjust the tensioning member vertically via the longitudinal guide rail 22, and adjust the tensioning member forward and backward via the adjustment rail 23 to achieve three-dimensional precise positioning of the tensioning member, and tension the steel strand to the target stress via the tensioning member.

[0066] S2. Tilt detection process: The tilt state of the chassis 1 is detected by the circular detection block 42 located in the detection chamber 41. When the chassis 1 tilts to either side, the circular detection block 42 tilts toward that side under the action of gravity, thereby squeezing the elastic expansion plate 43 on that side, causing the volume of the first sealed space 45 corresponding to that side to decrease, thereby increasing the hydraulic pressure of the detection liquid in the first sealed space 45. The tilt state of the chassis 1 is detected by the hydraulic pressure sensor 46, and the staff adjusts the tensioning member when the chassis 1 tilts.

[0067] S3. Automatic adjustment process: When the hydraulic sensor 46 transmits the hydraulic pressure data to the PLC controller via an electrical signal, the PLC controller controls the electric-controlled telescopic rod 35 on the corresponding side to retract, thereby allowing more of the counterweight balls 37 between the two baffles 33 on the corresponding side to enter the layout channel 34 on that side, thereby changing the center of gravity layout within the frame chassis 1 and automatically adjusting the center of gravity layout of the frame chassis 1 to an optimal state;

[0068] 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 sealed space 5 increases, and the circular detection block 42 squeezes one of the touch-pressure switches, so that the on-off valve in one of the control grooves 64 opens, and then the control groove 64 at this position is connected with the inside of the second sealed space 5, so that the piston block 65 in the control groove 64 moves upward under low air pressure conditions, and the distance sensor 66 transmits the position of the piston block 65 to the PLC controller through an electrical signal. The PLC controller controls the servo motor 63 in the same direction on the tilted side of the frame chassis 1 to start, drive the rotating rod 61 to rotate, and support the support block 62 on the ground.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent mobile tensioning trolley, characterized in that: include: A vehicle frame chassis (1), wherein two sets of rollers (11) are symmetrically mounted 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 tensioning mechanisms (2) distributed in a linear array are provided on the side walls of the support side plate (12) for applying pre-tensioning stress to the steel strands; An adjusting mechanism (3) is used to adjust the center of gravity layout of the frame chassis (1), the adjusting mechanism (3) comprising a layout cavity (31) provided inside the frame chassis (1), a conical block (32) being fixedly connected to the interior of the layout cavity (31), a plurality of baffles (33) distributed in a circumferential array being fixedly connected to the conical block (32), a plurality of layout channels (34) distributed in a circumferential array being provided inside the frame chassis (1), an electrically controlled telescopic rod (35) being provided in each of the layout channels (34), and a push block (36) being fixedly connected to the telescopic end of each electrically controlled telescopic rod (35); Each set of baffles (33) is provided with two pieces, and a plurality of weighted balls (37) are provided in the space between the two baffles (33) and in the layout channels (34) at corresponding positions; An automatic detection mechanism (4) is used to detect the tilt state of the frame chassis (1) and automatically adjust the center of gravity layout of the frame chassis (1) to an optimal state, the automatic detection mechanism (4) comprising a detection cavity (41) opened inside the frame chassis (1), the detection cavity (41) being located directly below the layout cavity (31), a circular detection block (42) being slidably mounted inside the detection cavity (41), an elastic telescopic plate (43) being sealingly slidably connected to the inner wall of each side of the detection cavity (41), and each elastic telescopic plate (43) being The elastic expansion plate (43) adjacent thereto is sealingly and slidingly connected, a first spring (44) is provided between each elastic expansion 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 expansion plate (43) and the inner wall of the detection cavity (41), and between each elastic expansion plate (43) and the adjacent elastic expansion plate (43), each first sealed space (45) is filled with a detection liquid, each first sealed space (45) is provided with a hydraulic pressure sensor (46), and a PLC controller is provided at the upper end of the frame chassis (1); The number of the electrically controlled telescopic rods (35) is the same as the number of the hydraulic sensors (46), and each electrically controlled telescopic rod (35) is electrically connected to the PLC controller via the hydraulic sensor (46) used in conjunction with the electrically controlled telescopic rod (35).

2. The intelligent mobile tensioning trolley according to claim 1, characterized in that: The elastic telescopic plate (43) comprises a fixed outer plate (431) and a slide groove (432) provided at the end of the fixed outer plate (431); a movable inner plate (433) is sealed and slidably connected in the slide groove (432); and a second spring (434) is provided between the movable inner plate (433) and the slide groove (432).

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

4. The intelligent mobile tensioning trolley according to claim 3, characterized in that: The side wall of the frame chassis (1) is further provided with a support mechanism (6) for automatically supporting the tilted side when the frame chassis (1) tilts. The support mechanism (6) includes a plurality of rotating rods (61), and the plurality of rotating rods (61) are respectively rotatably connected to the side wall of the frame chassis (1). Each rotating rod (61) is fixedly connected to a support block (62) via a connecting rod. A servo motor (63) for driving the rotating rod (61) is provided on the side wall of the frame chassis (1). ), four control grooves (64) distributed in a circumferential array are provided inside the frame chassis (1), each of the control grooves (64) is communicated with the second sealed space (5), an opening and closing valve is provided in each of the control grooves (64), a piston block (65) is airtightly slidably connected to a position below the opening and closing valve in each of the control grooves (64), a distance sensor (66) is provided on the inner bottom wall of the control groove (64), and a plurality of touch-pressure switches are also provided inside the frame chassis (1).

5. The intelligent mobile tensioning trolley according to claim 4, characterized in that: The number of the touch-pressure switches, control slots (64) and rotating rods (61) is the same, and the plurality of touch-pressure switches respectively control the opening and closing of the plurality of opening and closing valves. Each of the distance sensors (66) is electrically connected to the PLC controller via a servo motor (63) used in conjunction with the distance sensor (66).

6. The intelligent mobile tensioning trolley according to claim 5, characterized in that: The tensioning mechanism (2) comprises a transverse guide rail (21) fixedly connected to the supporting side plate (12), a longitudinal guide rail (22) being slidably connected to the transverse guide rail (21) in a horizontal direction, an adjustment guide rail (23) being slidably connected to the longitudinal guide rail (22) in a vertical direction, a slider (24) being slidably connected inside the adjustment guide rail (23), and a tensioning member being fixedly connected to the lower end of the slider (24).

7. A method for using the tensioning trolley according to claim 6, characterized in that: The following steps are involved: S1. Pre-processing: Push the chassis (1) 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 forward and backward through the adjustment guide rail (23) to achieve three-dimensional precise positioning of the tensioning member, and tension the steel strand to the target stress through the tensioning member; S2, tilt detection processing: the tilt state of the frame chassis (1) is detected by the position of the circular detection block (42) in the detection cavity (41). When the frame chassis (1) tilts 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 tilt state of the frame chassis (1) is detected by the hydraulic sensor (46). When the frame chassis (1) tilts, the staff adjusts the tensioning member; S3, automatic adjustment processing: When the hydraulic sensor (46) transmits the hydraulic data to the PLC controller via an electrical signal, the PLC controller controls the electric telescopic rod (35) on the corresponding side to retract, thereby causing more of the counterweight balls (37) between the two baffles (33) on the corresponding side to enter the layout channel (34) on that side, causing the center of gravity layout in the frame chassis (1) to change, and automatically adjusting the center of gravity layout of the frame chassis (1) to an optimal state; S4, automatic support processing: When the circular detection block (42) tilts to one side, the space in the second sealed space (5) on the side opposite to the tilt direction of the circular detection block (42) increases, and the circular detection block (42) squeezes 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 connected to the inside of the second sealed space (5), so that the piston block (65) in the control groove (64) moves upward under low pressure conditions, and the distance sensor (66) transmits the position of the piston block (65) to the PLC controller through an electrical signal. The PLC controller controls the servo motor (63) in the same direction of the tilted side of the frame chassis (1) to start, drive the rotating rod (61) to rotate, and support the support block (62) on the ground.

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