Gap-adjustable anti-swing structure and system, unbalance loading detection method and engineering vehicle

Abstract

The invention discloses a gap-adjustable anti-swing structure and system, an unbalance loading detection method and an engineering vehicle, which are mainly applied to the engineering vehicle with a frame and a box hinged to the frame, and comprise a mounting seat, a moving device, an anti-swing seat and a range finder, the mounting seat is fixed on the bottom surface of the box body close to the outer side surface of the frame longitudinal beam; the moving device is arranged on the mounting seat, the moving device comprises an executing part and an executed part, and the executed part is driven by the executing part to linearly move back and forth towards or away from the frame longitudinal beam; the anti-swing seat is arranged on an executed part and can move along with the executed part so as to be close to or far away from a limiting block on the outer side face of a longitudinal beam of the frame; the distance measuring instrument is installed on the anti-swing seat and used for measuring the distance between the anti-swing seat and the limiting block and further controlling the execution component to drive the executed component to move, so that the distance between the anti-swing seat and the limiting block is kept unchanged all the time, and the situations that the anti-swing seat is eccentrically abraded and a box on a frame swings left and right can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to an adjustable clearance anti-sway structure and system and a partial load detection method, belonging to the technical field of engineering vehicles. Background Art

[0002] The existing technical solutions generally add anti-sway seats on both sides of the front longitudinal beam of the sprinkler truck frame, which are welded to the vehicle body after being assembled with the frame. There is generally a clearance between the anti-sway seat and the frame limit block. After a period of mutual wear, the anti-sway seat or the limit block needs to be replaced. The clearances between the two anti-sway seats and the frame limit blocks are manually controlled and often vary in size. During the operation of the mine-use sprinkler truck, the uneven wear situation becomes increasingly severe. The anti-sway seat may experience weld tearing or abnormal wear due to insufficient structural strength, and the service life of the limit block is thus greatly shortened. If the replacement is not timely, it will also cause damage to the water tank buffer pad and severe shaking of the water tank, and in severe cases, it will also cause damage to other components of the mine car, affecting the attendance rate of the mine-use sprinkler truck. Replacing the anti-sway seat is a vertical welding, and the welding difficulty is high. If its service life cannot be improved, it will greatly increase the labor intensity of the mine service personnel. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides an adjustable clearance anti-sway structure and system and a partial load detection method. Compared with the fixed anti-sway seat, the adjustable clearance tipping vehicle body anti-sway system can ensure that the distance between the anti-sway seat and the limit block remains unchanged after the limit block is worn; it can effectively avoid the uneven wear of the anti-sway seat and the left and right swinging of the box on the frame; it greatly improves the service life of the limit block, the overall stability of the mine car, and the attendance rate of the mine car; by detecting the stress magnitude of the weld beads of the two anti-sway seats, it can then determine whether the sprinkler truck is partially loaded and the severity of the partial load, providing a scientific basis for standardized loading and partial load detection.

[0004] The present invention is implemented according to the following technical solutions: In the first aspect, the present invention provides an adjustable clearance anti-sway structure, which is mainly applied to an engineering vehicle having a frame and a box body hinged thereto, including: A mounting seat fixed on the bottom surface of the box body close to the outer side surface of the frame longitudinal beam; A moving device arranged on the mounting seat, the moving device including an executing component and an executed component, and the executed component is driven by the executing component to perform a linear reciprocating movement towards or away from the frame longitudinal beam; An anti-sway seat arranged on the executed component, which can move together with the executed component, and thus approach or move away from the limit block on the outer side surface of the frame longitudinal beam; A distance measuring instrument installed on the anti-sway seat, which is used to measure the distance between it and the limit block, and thus control the executing component to drive the executed component to move, so that the distance between the anti-sway seat and the limit block always remains unchanged.

[0005] In some embodiments, the mobile device includes: A nut plate, slidably supported on the mounting seat, capable of linearly reciprocating movement towards or away from the longitudinal beam of the vehicle frame; A lead screw, passing through a threaded hole in the nut plate, forming a screw pair therebetween; both ends of the lead screw in the length direction are rotatably supported on the mounting seat; A motor, including a housing and a rotating shaft, the housing is fixed on the mounting seat, the rotating shaft is connected to the lead screw, and the lead screw is driven to rotate circumferentially by the forward and reverse rotation of the motor, thereby controlling the axial movement of the nut plate and the anti-sway seat along the lead screw; Wherein, the nut plate constitutes the component to be actuated, and the lead screw and the motor constitute the actuating components.

[0006] In some embodiments, a guiding component is further installed on the mounting seat, and the guiding component is configured to slidably support the nut plate.

[0007] In some embodiments, at least one optical hole parallel to the threaded hole is provided on the nut plate, a light rod is inserted into the optical hole, the light rod is in clearance fit with the optical hole, and both ends in the length direction of the optical hole are fixed on the mounting seat; wherein, at least one light rod constitutes the guiding component.

[0008] In some embodiments, a set of fixing components are respectively provided on the mounting seats on the front and rear sides of the nut plate, and each set of fixing components is composed of three fixing seats spaced along the length direction of the longitudinal beam of the vehicle frame; a gap is left between the nut plate and the fixing components on both sides, so that the nut plate can be translated between the two sets of fixing components; an installation hole coaxial with the threaded hole on the nut plate is provided on each of the two middle fixing seats, a bearing is fixed in the installation hole, and both ends of the lead screw are respectively inserted into the corresponding bearings in a tight fit manner; an optical hole is provided on each of the left and right sides of the nut plate, a connection hole coaxial with it is provided on each of the two fixing seats at each optical hole, and both ends of the light rod in the length direction are provided with a boss structure, and the boss structure is inserted into the corresponding connection hole in a tight fit manner.

[0009] In some embodiments, a circumferential threaded hole is provided on the middle fixing seat far from the longitudinal beam of the vehicle frame, a circumferential through hole is provided on the housing of the motor, and the motor is fixed on the fixing seat through a circumferential bolt; a groove is provided at the end of the lead screw close to the motor, the rotating shaft of the motor is inserted into the groove, and a plurality of key grooves are provided at the circumferential surfaces of the rotating shaft and the groove facing each other, and a flat key is placed in the key groove to fix the lead screw and the rotating shaft in the circumferential rotation direction.

[0010] In some embodiments, the three fixing seats located between the nut plate and the longitudinal beam of the vehicle frame are all fixed to the mounting seat in a detachable manner by bolts; the other three fixing seats are welded to the mounting seat or integrally processed with the mounting seat.

[0011] In some embodiments, the anti-sway seat includes: A bottom plate fixed to the component to be actuated; Two oppositely arranged vertical plates fixed to the bottom plate; A side plate in a T-shaped structure, the horizontal plate of which is fixed between the two vertical plates, and the vertical plate of the side plate is arranged opposite to the limiting block; the distance measuring instrument is fixed to one of the vertical plates, and an avoidance hole coaxial with the probe on the distance measuring instrument is provided on the vertical plate of the side plate.

[0012] In some embodiments, at least one strain gauge is adhesively bonded to the anti-sway seat, the at least one strain gauge is electrically connected to the vehicle controller through a lead wire, and the vehicle controller is further electrically connected to a display screen on the console. After receiving the stress data of the strain gauge, the vehicle controller displays the stress magnitude through the display screen.

[0013] In a second aspect, the present invention provides an adjustable clearance anti-sway system, including two adjustable clearance anti-sway structures as described above; the vehicle frame is composed of two longitudinal beams arranged side by side at a predetermined interval in the same plane and a plurality of cross beams fixedly connected to the two longitudinal beams. One symmetrically arranged adjustable clearance anti-sway structure is fixed to the bottom surface of the box body on the outer side surfaces of the two longitudinal beams; when the box body on the vehicle frame is unloaded, through the adjustment of the adjustable clearance anti-sway structures on both sides, the distances between the limiting blocks on the two longitudinal beams and the anti-sway seats opposite thereto are equal and this distance remains unchanged all the time; when the box body on the vehicle frame is loaded with materials, the stress magnitudes detected by the strain gauges adhesively bonded to the anti-sway seats on both sides are viewed through the display screen on the console.

[0014] In a third aspect, the present invention provides a partial load detection method applied to the above adjustable clearance anti-sway system, including: Symmetrically welding the adjustable clearance anti-sway structures located on both sides of the vehicle frame to the bottom surface of the box body, and electrically connecting the motors, distance measuring instruments and strain gauges in the adjustable clearance anti-sway structures to the vehicle power supply and the vehicle controller; When the box body on the vehicle frame is unloaded, after the vehicle is powered on, the distance measuring instruments on both sides of the vehicle frame measure the distance A between their probes and the limiting blocks on the vehicle frame. If there is a deviation between this distance A and a preset distance B, it will be fed back to the vehicle controller. The vehicle controller controls the motor to rotate forward or backward. After driving the lead screw to rotate, the nut plate moves on the guide rail formed by the smooth rods on the left and right sides until the distance values fed back by the distance measuring instruments on both sides of the vehicle frame are both the preset distance B, and then the vehicle controller controls the motor to stop working; When the box on the vehicle frame is loaded with materials, after the vehicle is powered on, the stress detected by the strain gauges bonded to the anti-sway seats on both sides can be viewed through the display screen on the central console, so as to determine whether there is uneven load of the box on the vehicle frame. Moreover, the degree of uneven load of the box on the vehicle frame can also be measured by calculating the ratio of the stresses on both sides.

[0015] In a fourth aspect, the present invention provides an engineering vehicle, including a vehicle frame and a box connected to the vehicle frame through a pin shaft, and further including the above-mentioned adjustable-gap anti-sway structure; or, the above-mentioned adjustable-gap anti-sway system.

[0016] In some embodiments, the engineering vehicle is a mining water sprinkler or a mining dump truck.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the fixed anti-sway seat, the adjustable-gap anti-sway system for the tipping body can ensure that the distance between the anti-sway seat and the limit block remains unchanged after the limit block is worn; it can effectively avoid the occurrence of eccentric wear of the anti-sway seat and the left and right swinging of the box on the vehicle frame; it greatly improves the service life of the limit block, the overall stability of the mining truck, and the attendance rate of the mining truck.

[0018] Standard loading plays a crucial role in the life and stability of the mining truck. The method of detecting the stress level of the weld beads of the anti-sway seats on both sides to explore the uneven load of the materials is also based on the precondition that the distance between the anti-sway seat and the limit seat can always be adjusted and maintained unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0020] In the drawings: Figure 1 is the overall schematic diagram of the adjustable-gap anti-sway structure of the present invention Figure 1 ; Figure 2 is the overall schematic diagram of the adjustable-gap anti-sway structure of the present invention Figure 2 ; Figure 3 is the cross-sectional view of the adjustable-gap anti-sway structure of the present invention; Figure 4 is the application schematic diagram of the adjustable-gap anti-sway structure of the present invention Figure 1 (applied to a mining water sprinkler); Figure 5 is the application schematic diagram of the adjustable-gap anti-sway structure of the present invention Figure 2(Applied to mining dump trucks).

[0021] Reference numerals in the drawings: 1 box body, 2 vehicle frame, 3 pin shaft, 4 limit block, 5 anti-sway structure with adjustable clearance, 6 anti-sway seat, 7 nut plate, 8 motor, 9 mounting seat, 10 optical rod fixing seat, 11 optical rod, 12 lead screw fixing seat, 13 lead screw, 14 avoidance hole, 15 rangefinder, 16 strain gauge, 17 bearing.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Such as Figure 1 、 Figure 2 、Figure 4、 Figure 5As shown in the figure, an adjustable clearance anti-sway structure is mainly applied to engineering vehicles with a vehicle frame 2 and a box body 1 hinged thereto, including a mounting seat 9, a moving device, an anti-sway seat 6 and a rangefinder 15; the mounting seat 9 is fixed on the bottom surface of the box body 1 near the outer side of the vehicle frame longitudinal beam; the moving device is arranged on the mounting seat 9, and the moving device includes an executing component and an executed component, and the executed component is driven by the executing component to move linearly back and forth towards or away from the vehicle frame longitudinal beam; the anti-sway seat 6 is arranged on the executed component and can move together with the executed component, and thus approach or move away from the limiting block 4 on the outer side of the vehicle frame longitudinal beam; the rangefinder 15 is installed on the anti-sway seat 6 and is used to measure the distance between it and the limiting block 4, and further control the executing component to drive the executed component to move, so that the distance between the anti-sway seat 6 and the limiting block 4 always remains unchanged.

[0027] The specific structure of the above-mentioned moving device will be further described below.

[0028] As shown in Figure 1 , Figure 2 , Figure 3 As shown in the figure, the moving device includes a nut plate 7, a lead screw 11, and a motor 8. The nut plate 7 is slidably supported on the mounting seat 9 and can move linearly back and forth towards or away from the vehicle frame longitudinal beam; the lead screw 13 is passed through the threaded hole of the nut plate 7, and a screw pair is formed between the two; both ends of the lead screw 11 in the length direction are rotatably supported on the mounting seat 9; the motor 8 includes a housing and a rotating shaft, the housing is fixed on the mounting seat 9, the rotating shaft is connected to the lead screw 13, and the positive and reverse rotation of the motor 8 drives the lead screw 13 to rotate circumferentially, thereby controlling the nut plate 7 and the anti-sway seat 6 to move axially along the lead screw 13; among them, the nut plate 7 constitutes the executed component, and the lead screw 13 and the motor 8 constitute the executing component.

[0029] It should be noted that the motor 8 uses a servo motor, and the servo motor has the following specific advantages: 1. Precision: Realize closed-loop control of position, speed and torque; overcome the problem of step loss of the stepper motor; 2. Rotational speed: Good high-speed performance, generally the rated rotational speed can reach 2000 - 3000 revolutions; 3. Adaptability: Strong overload resistance, can withstand a load three times the rated torque, especially suitable for occasions with instantaneous load fluctuations and requirements for rapid start; 4. Stability: Smooth operation at low speed, and there will be no step running phenomenon similar to that of the stepper motor during low-speed operation. Suitable for occasions with high-speed response requirements; 5. Timeliness: The dynamic response time of motor acceleration and deceleration is short, generally within dozens of milliseconds; 6. Comfort: Heat generation and noise are significantly reduced.

[0030] For a further solution, as shown in Figure 1 , Figure 2 , Figure 3 As shown in the figure, a guiding component is also installed on the mounting seat 9, and the guiding component is configured to slidably support the nut plate 7.

[0031] The specific structure of the above-mentioned guiding component will be further described below.

[0032] As Figure 1 , Figure 2 , Figure 3 shown, at least one light hole arranged parallel to the threaded hole is provided on the nut plate 7, a light rod 11 is inserted into the light hole, the light rod 11 is in clearance fit with the light hole, and both ends in the length direction of the light hole are fixed on the mounting seat 9; wherein, at least one light rod 11 constitutes the guiding component.

[0033] In a further solution, as Figure 1 , Figure 2 , Figure 3 shown, on the mounting seats 9 on the front and rear sides of the nut plate 7, a set of fixing components is provided respectively, and each set of fixing components is composed of three fixing seats spaced along the length direction of the vehicle frame longitudinal beam; a gap is left between the nut plate 7 and the fixing components on both sides, so that the nut plate 7 can translate between the two sets of fixing components; on the two fixing seats located in the middle, an installation hole coaxial with the threaded hole on the nut plate 7 is provided respectively, and a bearing 17 is fixed in the installation hole; both the left and right sides of the nut plate 7 are provided with a light hole respectively, and on each of the two fixing seats at each light hole, a connection hole coaxial with it is provided respectively, and both ends in the length direction of the light rod 11 are set as a boss structure, and the boss structure is inserted into the corresponding connection hole in a tight fit manner.

[0034] In a further solution, as Figure 1 , Figure 2 , Figure 3 shown, a circumferential threaded hole is provided on the middle fixing seat far from the vehicle frame longitudinal beam, a circumferential through hole is provided on the housing of the motor 8, and the motor 8 is fixed on the fixing seat through circumferential bolts; a groove is provided at the end of the lead screw 13 close to the motor 8, the rotating shaft of the motor 8 is inserted into the groove, and a plurality of key grooves arranged at intervals in the circumferential direction are provided between the circumferential surfaces of the rotating shaft and the groove facing each other, and a flat key is placed in the key groove to fix the lead screw 13 and the rotating shaft in the circumferential rotation direction.

[0035] It should be noted that the three fixing seats located between the nut plate 7 and the vehicle frame longitudinal beam are all fixed on the mounting seat 9 in a detachable manner through bolts; the other three fixing seats are welded on the mounting seat 9 or integrally processed with the mounting seat 9.

[0036] Preferably, the mounting base 9 is formed by welding a bottom plate and two oppositely arranged rib plates; on both sides of the bottom of the fixed base (i.e., the lead screw fixed base 12 in the middle and the optical rod fixed bases 10 on both sides in the attached drawing), there is a protrusion provided with a through hole, and on the bottom plate of the mounting base 9, there is a threaded hole coaxial with the through hole, and the fixed base is fastened to the bottom plate of the mounting base 9 through bolts; the other three fixed bases are integrally processed with the bottom plate of the mounting base 9, and are in contact with and welded to the box body through the lower part of the rib plate and a part of the edge of the bottom plate. After the lead screw 13 is screwed into the nut plate 7, a margin is left on both sides. The bearings 17 are installed on both sides of the lead screw 13, and the side of the lead screw 13 with the flat key mounting hole is installed in the middle fixed type of fixed base, and the other side is installed on the lead screw mounting base 12, and the lead screw mounting base 12 is installed on the mounting base 9 through bolts. The optical rod 11 passes through the optical holes on both sides of the nut plate 7 and is installed in the fixed bases on both sides. After the optical rod mounting base 10 is inserted into the optical rod 11, it is fixed to the mounting base 9 through bolts. The motor 8 is connected to the lead screw 13 through a flat key and then fixed to the middle fixed type of fixed base through bolts; the anti-sway seat 6 is fixed to the nut plate 7 through bolts; the rangefinder 15 is fixed to the anti-sway seat 6 through bolts.

[0037] The specific structure of the above anti-sway seat will be further described below.

[0038] As Figure 1 、 Figure 2 shown, the anti-sway seat 6 includes a bottom plate, two oppositely arranged vertical plates and a side plate in a T-shaped structure; the bottom plate is fixed to the nut plate 7 through bolts; the two oppositely arranged vertical plates are welded to the bottom plate; the horizontal plate in the side plate is welded between the two vertical plates, and the vertical plate in the side plate is arranged oppositely to the limiting block 4; the rangefinder 15 is fixed to one of the vertical plates, and an avoidance hole 14 coaxial with the probe on the rangefinder 15 is formed on the vertical plate of the side plate.

[0039] In a further solution, at least one strain gauge 16 is bonded to the horizontal plate in the side plate, and at least one strain gauge 16 is electrically connected to the vehicle controller through a lead wire, and the vehicle controller is also electrically connected to the display screen on the console. After the vehicle controller receives the stress data of the strain gauge 16, the stress magnitude at the joint (i.e., the groove weld) between the horizontal plate and the vertical plate in the side plate is displayed through the display screen.

[0040] The present invention also provides an adjustable clearance anti-sway system, which includes two of the above-mentioned adjustable clearance anti-sway structures 5; the vehicle frame 2 is composed of two longitudinal beams arranged side by side at a predetermined interval in the same plane and a plurality of cross beams fixedly connected to the two longitudinal beams. On the bottom surface of the box body on the outer sides of the two longitudinal beams, a symmetrically arranged adjustable clearance anti-sway structure 5 is fixed respectively; when the box body 1 on the vehicle frame 2 is unloaded, through the adjustment of the adjustable clearance anti-sway structures 5 on both sides, the distance between the limit blocks 4 on the two longitudinal beams and the anti-sway seats 6 arranged opposite to them is equal and remains unchanged all the time; the distances between the anti-sway seats 6 on the left and right sides and the limit blocks 4 can be accurately kept consistent, without the need for on-site service personnel to carry out fitting welding operations. After the limit blocks 4 on the left and right sides are worn, the distance between the anti-sway seat 6 and the limit block 4 can still remain unchanged, ensuring the stability of the box body 1 on the vehicle frame 2 and greatly improving the service life of the limit blocks 4; when the box body 1 on the vehicle frame 2 is loaded with materials, the stress magnitude (i.e., the stress at the groove weld of the horizontal plate and the vertical plate in the side plate) detected by the strain gauges 16 adhered to the anti-sway seats 6 on both sides is viewed through the display screen on the console, so as to determine whether there is partial load when the vehicle is loaded with materials and determine the severity of the partial load, providing a scientific basis for standard loading and partial load detection.

[0041] The present invention also provides a partial load detection method, which is applied to the above-mentioned adjustable clearance anti-sway system, and includes: Before the box body 1 is installed on the vehicle frame 2, the adjustable clearance anti-sway structures 5 located on both sides of the vehicle frame 2 are symmetrically welded to the bottom surface of the box body 1, and then the box body 1 is installed on the vehicle frame 2 through the pin shaft 3. After the installation accessories of the box body 1 are installed, the motor 8, the distance measuring instrument 15 and the strain gauge 16 in the adjustable clearance anti-sway structure 5 are electrically connected to the vehicle power supply and the vehicle controller; when the box body on the vehicle frame is unloaded, after the vehicle is powered on, the distance measuring instruments 15 on both sides of the vehicle frame can directly measure the distance A between its probe and the limit block on the vehicle frame through the avoidance holes 14. If there is a deviation between the distance A and the preset distance B, it will be fed back to the vehicle controller, and the vehicle controller controls the motor 8 to rotate forward or backward. After driving the lead screw 13 to rotate, the nut plate 7 moves on the guide rail formed by the optical rods 11 on the left and right sides until the distance values fed back by the distance measuring instruments 15 on both sides of the vehicle frame are both the preset distance B, and then the vehicle controller controls the motor to stop working; when the box body on the vehicle frame is loaded with materials, after the vehicle is powered on, the stress magnitude (i.e., the stress at the groove weld of the horizontal plate and the vertical plate in the side plate) detected by the strain gauges 16 adhered to the anti-sway seats 6 on both sides is viewed through the display screen on the console, so as to determine whether there is partial load of the box body on the vehicle frame, and the partial load degree of the box body on the vehicle frame can also be calculated by calculating the ratio of the stresses on both sides.

[0042] In summary, the present invention provides an adjustable clearance anti-sway structure, a system and a partial load detection method, which achieve the following functions and effects: Weld the bottom of the mounting base 9 to the boxes 1 on both the left and right sides of the longitudinal beam. Measure the distance value between the probe of the distance measuring instrument 15 and the limit block 4 on the vehicle frame 2 and feedback it to the vehicle controller, thereby controlling the forward and reverse rotation of the motor 8. The anti-sway seat 6 is installed on the nut plate 7. The motor 8 is connected to the lead screw 13 through a flat key. The two side optical rods 11 act as guide rails. By rotating the motor 8, the translation of the nut plate 7 and the anti-sway seat 6 is controlled. When the distance value feedback by the distance measuring instrument 15 reaches the target value, the motor 8 stops working. The distances between the anti-sway seats 6 on both the left and right sides and the limit block 4 can be accurately kept consistent, eliminating the need for on-site service personnel to perform fitting welding operations. After the limit blocks 4 on both the left and right sides are worn, the distances between the anti-sway seats 6 and the limit block 4 can still remain unchanged, ensuring the stability of the water tank and greatly increasing the service life of the limit block 4.

[0043] Attach the strain gauge 16 to the anti-sway seat 6 and transmit the signal to the central control console to monitor the stress magnitudes on both the left and right sides in real time, thereby determining whether there is uneven loading on the box 1 on the vehicle frame 2 and the severity of the uneven loading, providing a scientific basis for standardized loading and uneven loading detection.

[0044] The engineering vehicle provided by the present invention will be described below. The engineering vehicle described below can be mutually corresponding and referred to with the adjustable clearance anti-sway system described above.

[0045] As Figure 4 、 Figure 5 shown, an engineering vehicle provided by the present invention may include the adjustable clearance anti-sway system described in any one of the above embodiments.

[0046] The beneficial effects achieved by the mining dump truck provided by the present invention are consistent with those achieved by the adjustable clearance anti-sway system provided by the present invention, so they will not be elaborated here.

[0047] It should be noted that the above construction machinery may be a mining water truck or a mining dump truck.

[0048] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0049] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combinations of the features of different embodiments also mean that they are within the protection scope of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0050] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. An adjustable clearance anti-sway structure, mainly applied to engineering vehicles with a vehicle frame and a box body hinged thereto, is characterized in that Comprising: A mounting base, fixed on the bottom surface of the box body near the outer side of the longitudinal beam of the vehicle frame; A moving device, arranged on the mounting base, the moving device includes an executing component and an executed component, and drives the executed component to move linearly back and forth towards or away from the longitudinal beam of the vehicle frame through the executing component; An anti-sway seat, arranged on the executed component, can move together with the executed component, and thus approach or move away from the limit block on the outer side of the longitudinal beam of the vehicle frame; A rangefinder, installed on the anti-sway seat, used to measure the distance between it and the limit block, and then control the executing component to drive the executed component to move, so that the distance between the anti-sway seat and the limit block always remains unchanged.

2. The adjustable clearance anti-sway structure according to claim 1, characterized in that, The moving device includes: A nut plate, slidably supported on the mounting base, and can move linearly back and forth towards or away from the longitudinal beam of the vehicle frame; A lead screw, passing through the threaded hole of the nut plate, and a screw pair is formed between the two; the two ends of the lead screw in the length direction are rotationally supported on the mounting base; A motor, including a housing and a rotating shaft, the housing is fixed on the mounting base, the rotating shaft is connected to the lead screw, and drives the lead screw to rotate circumferentially through the forward and reverse rotation of the motor, and then controls the nut plate and the anti-sway seat to move axially along the lead screw; Wherein, the nut plate constitutes the executed component, and the lead screw and the motor constitute the executing component.

3. An adjustable clearance anti-sway structure according to claim 2, characterized in that: A guiding component is further installed on the mounting base, and the guiding component is configured to slidably support the nut plate.

4. An adjustable clearance anti-sway structure according to claim 3, characterized in that: At least one light hole parallel to the threaded hole is provided on the nut plate, a light rod is inserted into the light hole, the light rod is in clearance fit with the light hole, and the two ends in the length direction of the light hole are fixed on the mounting base; Wherein, at least one light rod constitutes the guiding component.

5. An adjustable clearance anti-sway structure according to claim 4, characterized in that: A set of fixing components are respectively arranged on the mounting bases on the front and rear sides of the nut plate, and each set of fixing components is composed of three fixing seats spaced along the length direction of the longitudinal beam of the vehicle frame; a gap is left between the nut plate and the fixing components on both sides, so that the nut plate can be translated between the two sets of fixing components; An installation hole coaxial with the threaded hole on the nut plate is provided on each of the two middle fixing seats, a bearing is fixed in the installation hole, and the two end portions of the lead screw are respectively inserted into the corresponding bearings in a tight fit manner; A light hole is provided on each of the left and right sides of the nut plate, a connecting hole coaxial with it is provided on each of the two fixing seats at each light hole, and the two end portions in the length direction of the light rod are provided with a boss structure, and the boss structure is inserted into the corresponding connecting hole in a tight fit manner.

6. An adjustable clearance anti-sway structure according to claim 5, characterized in that: A circumferential threaded hole is provided on the middle fixing seat far from the longitudinal beam of the vehicle frame, a circumferential through hole is provided on the housing of the motor, and the motor is fixed on the fixing seat through circumferential bolts; The lead screw is provided with a groove at the end close to the motor, the rotating shaft of the motor penetrates into the groove, and a plurality of key grooves are arranged at intervals in the circumferential direction between the circumferential surfaces of the rotating shaft and the groove facing each other. A flat key is placed in the key groove to fix the lead screw and the rotating shaft in the circumferential rotation direction.

7. The adjustable clearance anti-sway structure according to claim 5, characterized in that: The three fixing seats located between the nut plate and the longitudinal beam of the vehicle frame are all fixed to the mounting seat in a detachable manner by bolts; the other three fixing seats are welded to the mounting seat or integrally processed with the mounting seat.

8. An adjustable clearance anti-sway structure according to claim 1, characterized in that The anti-sway seat includes: A bottom plate fixed to the component to be actuated; Two oppositely arranged vertical plates fixed to the bottom plate; A side plate in a T-shaped structure, the horizontal plate in the side plate is fixed between the two vertical plates, and the vertical plate in the side plate is arranged opposite to the limit block; the distance measuring instrument is fixed to one of the vertical plates, and an avoidance hole coaxial with the probe on the distance measuring instrument is opened on the vertical plate of the side plate.

9. The adjustable clearance anti-sway structure according to claim 1, characterized in that: At least one strain gauge is adhered to the anti-sway seat, the at least one strain gauge is electrically connected to the vehicle controller through a lead wire, and the vehicle controller is also electrically connected to the display screen on the console. After receiving the stress data of the strain gauge, the vehicle controller displays the stress magnitude through the display screen.

10. An adjustable clearance anti-sway system, characterized in that: It includes two adjustable clearance anti-sway structures according to any one of claims 1 to 9; The vehicle frame is composed of two longitudinal beams arranged side by side at a predetermined interval in the same plane and a plurality of cross beams fixedly connected to the two longitudinal beams. One symmetrically arranged adjustable clearance anti-sway structure is fixed to the bottom surface of the box body on the outer sides of the two longitudinal beams; When the box body on the vehicle frame is unloaded, through the adjustment of the adjustable clearance anti-sway structures on both sides, the distance between the limit blocks on the two longitudinal beams and the anti-sway seats arranged opposite to them is equal and this distance remains unchanged all the time; When the box body on the vehicle frame is loaded with materials, the stress magnitude detected by the strain gauges adhered to the anti-sway seats on both sides is viewed through the display screen on the console.

11. A partial load detection method, characterized in that: Applied to the adjustable clearance anti-sway system according to claim 10, including: Symmetrically welding the adjustable clearance anti-sway structures on both sides of the vehicle frame to the bottom surface of the box body, and electrically connecting the motor, the distance measuring instrument and the strain gauge in the adjustable clearance anti-sway structure to the vehicle power supply and the vehicle controller; When the box body on the vehicle frame is unloaded, after the vehicle is powered on, the distance measuring instruments on both sides of the vehicle frame measure the distance A between their probes and the limit blocks on the vehicle frame. If there is a deviation between this distance A and the preset distance B, it will be fed back to the vehicle controller. The vehicle controller controls the motor to rotate forward or backward. After driving the lead screw to rotate, the nut plate moves on the guide rail formed by the smooth rods on the left and right sides until the distance values fed back by the distance measuring instruments on both sides of the vehicle frame are both the preset distance B, and then the vehicle controller controls the motor to stop working; When the box on the vehicle frame is loaded with materials, after the vehicle is powered on, the stress magnitude detected by the bonded strain gauges on the anti-sway seats on both sides can be viewed through the display screen on the central console, thereby determining whether there is an eccentric load of the box on the vehicle frame, and the degree of eccentric load of the box on the vehicle frame can also be calculated by calculating the ratio of the stresses on both sides.

12. An engineering vehicle, comprising a vehicle frame and a box connected to the vehicle frame by a pin shaft, characterized in that: It further comprises the adjustable clearance anti-sway structure according to any one of claims 1 to 9; or, the adjustable clearance anti-sway system according to claim 10.

13. An engineering vehicle according to claim 12, characterized in that: The engineering vehicle is a mining sprinkler or a mining dump truck.

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