CN114291176B - Heavy object displacement device for bridge construction - Google Patents
Heavy object displacement device for bridge construction Download PDFInfo
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Abstract
The invention discloses a weight shifting device for bridge construction, which relates to the field of building equipment, and the technical scheme is that the weight shifting device comprises a frame, wherein the frame is connected with two parallel roller bodies; the frame comprises a supporting rod in the middle and a casing positioned at two sides of the supporting rod, and a driving unit and a steering unit are respectively arranged in the casing; the two roller bodies are arranged between the machine shells at two sides and are respectively positioned at two sides of the supporting rod; the driving unit comprises a driving device and two output shafts which are linked with the driving device and move synchronously, and the two output shafts are respectively linked with the roll shaft of one roll body. The beneficial effects of the invention are as follows: the device adopts the roller body as a moving unit, and the rotating roller body can bear heavier load unlike a common wheel type structure. With the roller body as the main body for carrying and moving. After the device is used for bearing long building materials in a queue, the moving distance of the device to the heavy objects is longer under the condition that the roller bodies are the same in total rotation angle, so that higher construction efficiency is brought.
Description
Technical Field
The invention relates to the field of building equipment, in particular to a weight shifting device for bridge construction.
Background
When bridge construction is carried out, the whole process involves a large amount of building materials and equipment, and in general, the assembly comprises various large-size and heavy objects, various corresponding different loading devices are also available, and common gantry cranes, crawler cranes and plate erecting machines are all suitable for extremely large-scale components. And relatively small bridge plates, steel structures and the like are more convenient to transport by means of small equipment.
At present, a special weight shifter meets the requirements, but most of the existing weight shifters work by means of rails on construction sites, the moving positions are limited, and the carrying capacity and the carrying speed are relatively low.
Disclosure of Invention
The invention provides a weight shifting device for bridge construction.
The technical scheme is that the device comprises a frame, wherein the frame is connected with two roller bodies which are arranged in parallel;
the frame is H-shaped and comprises a supporting rod in the middle and machine shells positioned at two sides of the supporting rod, and a driving unit and a steering unit are respectively arranged in the machine shells at two sides; the two roller bodies are arranged between the machine shells at the two sides and are respectively positioned at the two sides of the supporting rod;
the driving unit comprises a driving device and two output shafts which are linked with the driving device and move synchronously, and the two output shafts are respectively linked with the roll shaft of one roll body; the driving device can be an electric motor or a fuel engine, and is linked with the output shaft through a speed reducing mechanism.
The steering unit comprises two steering wheels, each steering wheel is connected with the shell through a lifting frame, the upper side of the lifting frame is connected with a vertically arranged rotating rod, the rotating rod is rotationally connected with the shell, and each rotating rod is linked with a steering mechanism in the steering unit.
The steering mechanism adopts a gear combination to steer, comprises steering gears fixedly connected with the end parts of each rotating rod, a steering motor is arranged between the two steering gears, a driving wheel is fixedly connected to a motor shaft of the steering motor, and the driving wheel is linked with the steering gears on two sides through different reduction gear sets, so that synchronous and reverse rotation of the two steering gears is realized.
Each steering wheel is linked with a driving motor, the driving motor drives the steering wheels to move, the linkage mode of the driving motor and the steering wheels is driven by a chain and sprocket combination, or the belt and the belt pulley can be driven, and a gear set can be also used for driving.
The lifting frame can adopt lifting rods in the prior art to be combined with the wheel frame, and the lifting rods can adopt hydraulic or pneumatic rods.
Preferably, the roll body is a solid roll body, such as a rubber roll.
The inside inner support skeleton that sets up of roll body, skeleton cladding elasticity material, skeleton can divide multiple form, and its effect is for playing inside auxiliary stay's effect, and concrete form can adopt prior art, and no more detailed description here.
The lower part of the shell where the driving unit is located is connected with a positioning wheel through another lifting frame, the positioning wheel is a sphere, a connecting block with a ball groove is arranged at the lower side of the lifting frame corresponding to the positioning wheel, and the positioning wheel is embedded in the ball groove and is rotationally connected with the inner wall of the ball groove; the driven wheel is only used as a driven wheel, and a related driving unit is not required to be linked;
the positioning wheels and the two steering wheels are distributed in an isosceles triangle.
Preferably, the outer diameter of the roller body is larger than the height of the frame, and the distance between the upper end face of the roller body and the ground surface is larger than the distance between the upper end face of the frame and the ground surface.
Preferably, top plates are respectively arranged on the machine shells at two sides;
the upper side of the shell is provided with a counter bore, and the lower side of the top plate is connected with the counter bore of the shell through a lifting rod;
after the lifting rod is completely lifted, the upper end face of the lifting rod is flush with or higher than the upper end face of the roller body.
Preferably, two top plates are arranged on the corresponding shell of the driving unit, and the two top plates are respectively positioned at two ends of the upper side of the shell;
a top plate is arranged on the casing corresponding to the steering unit, and the top plate is positioned in the middle of the casing.
Preferably, the outer sides of the shells on two sides are respectively provided with a distance sensor group, and each distance sensor group comprises two symmetrically arranged distance sensors;
each distance sensor is electrically connected with a driving motor and a steering motor of the steering wheel through a control module to form a control loop.
Preferably, the distance sensor is combined with a steering wheel to perform the alignment of the direction of the device according to the following method;
a1, setting a leveling reference object on at least one side of the advancing direction of the device, wherein the leveling reference object is a strip-shaped shielding object, and the covering height of the leveling reference object on a vertical surface exceeds the horizontal height of the distance sensor;
a2, adjusting the alignment reference object to ensure that the long axis of the alignment reference object is parallel to the axis of the carrying advancing direction; the alignment reference can be selected from cloth strips, plate bodies and the like, and if the bridge building is partially formed, the bridge side plates can also be used as the alignment reference;
a3, starting a distance sensor group facing one side of the adjustment reference object, and respectively measuring the distance of the adjustment reference object by two distance sensors 4;
a4, feeding back the measurement result to a control module by the distance sensor, and controlling the rotation direction and the rotation angle of the device by adjusting the corresponding motors of the two steering wheels by the control module according to the feedback result;
a5, after the alignment in the step A4 is finished, the two distance sensors of the same distance sensor group are used for measuring the distance relative to the alignment reference object again, and when the measured distances of the two distance sensors are equal, the steering wheel is braked; and finishing the alignment of the direction of the device, and if deviation exists, continuing the alignment.
After alignment, the device is in place, the lifting frames of the steering wheel and the positioning wheel are retracted, and the roller body is tightly contacted with the ground to wait for transportation.
Preferably, the distance sensor may be any one of doppler radar, ultrasound, laser or infrared distance sensor. So long as the distance between the measurable distance sensor 4 and the alignment reference is satisfied.
Preferably, in the above A4, the method for determining the rotation angle required by the device by the control module is that,
defining one distance sensor in the same distance sensor group as a point A, the other distance sensor as a point B, the projection of the point A on the vertical plane of the point B as a point C, and the distance between the point A and an alignment reference object as D 1 B and the distance between the alignment reference object and the reference object is D 2 Then it is possible to obtain:
BC＝|D 1 -D 2 |
thus, it follows that +.cba=arccosbc/AB, i.e.,
further, it is possible to obtain that the angle α at which the device needs to be turned is:
wherein AB is the distance between two distance sensors, which is a known quantity; the direction of the device to be rotated can be determined by the judgment D 1 And D 2 Is obtained.
The distance L of any steering wheel to be moved can be further calculated by the main control module and is as follows:
wherein R is the distance from the driven wheel to any steering wheel;
according to the distance L and the radius of the steering wheel, the sum of the angles of the steering wheel which needs to rotate can be obtained.
By combining the method, the control of the device can be controlled by manual remote control, and the direction adjustment of the device can be automatically finished by the device, so that the problem that the direction adjustment of the device is difficult to grasp by visual inspection during manual operation is avoided.
Preferably, two gear speed changing assemblies are arranged in the driving unit and correspond to two rotation directions of the roller body respectively, one of the two gear speed changing assemblies is a low-rotation-speed high-torque speed changing assembly, and the other gear speed changing assembly is a high-rotation-speed low-torque speed changing assembly.
Preferably, one end of each of the two housings is provided with an auxiliary supporting component;
the auxiliary supporting component comprises a bracket and a pressing plate; the support comprises at least one push rod, the fixed end of the push rod is fixedly connected with the shell, and the movable end of the push rod is hinged with the lower side face of the pressing plate; the push rod can be an electric, pneumatic or hydraulic push rod;
the pressing plate extends to a roller shaft of the roller body at the end of the pressing plate, an arc-shaped tile plate is arranged on the outer side of the roller shaft of the roller body, and the outer side of the tile plate is fixedly connected with a push rod; the shell is fixedly provided with a positioning plate towards one side of the roller body, a guide hole is formed in the plate body of the positioning plate corresponding to the push rod, and the tile plate is in sliding connection with the positioning plate through the push rod and the guide hole;
and a compression bar is arranged between the push bar and the pressing plate, the compression bar is a telescopic bar, and two ends of the compression bar are respectively hinged with the pressing plate and the push bar.
A weight linear displacement method based on the weight displacement device comprises the steps of,
s1, arranging a plurality of weight shifting devices in a row, selecting the number of weight shifting devices to be used according to actual requirements, wherein at least three weight shifting devices are used, and the advancing direction of the weight shifting devices is a large-torque gear direction;
s2, placing a weight to be moved on a roller body of the weight shifting device;
s3, starting a weight shifting device to move forward to a target position;
s4, along with the forward movement of the weight, when the weight shifting device at the tail end is empty, the device at the tail end is controlled to translate by at least half the distance of the width of the frame, and then the weight shifting device is rotated by 180 degrees;
s5, the weight shifting device performs direction alignment according to the alignment reference object;
and S6, after the alignment is completed, the weight shifting device is switched to a high-rotation speed gear, the weight is moved forward to the forefront end of the weight in the reverse rotation direction of the roller body, then the weight is rotated 180 degrees again, and the weight shifting device translates in the same amount as the S4 to wait for the weight to be carried on the roller body.
S7, repeating the steps S3-S6 until the weight moves to the required position.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: the device adopts the roller body as a moving unit, and the rotating roller body can bear heavier load unlike a common wheel type structure. With the roller body as the main body for carrying and moving. After the device is used for bearing long building materials in a queue, when the roller body moves, the device self-displacement drives the building materials to move, and along with the movement of the roller body, the building materials on the roller body slowly move forward. Under the condition that the roller bodies have the same total rotation angles, the device has longer moving distance to the heavy object, thereby bringing higher construction efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the second embodiment of the present invention.
Fig. 3 is a schematic diagram of the overall structure of the embodiment of the present invention.
Fig. 4 is a partial enlarged view of a of fig. 3.
Fig. 5 is a schematic view illustrating a top plate lifting state according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a steering state according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a rotation angle calculating method according to an embodiment of the invention.
Wherein, the reference numerals are as follows: 1. a roller body; 2. a frame; 21. a driving unit; 22. a steering unit; 221. a steering wheel; 222. a positioning wheel; 23. a support rod; 3. a top plate; 4. a sensor; 5. an auxiliary support assembly; 51. a bracket; 52. a pressing plate; 53. a push rod; 54. a positioning plate; 55. and (5) pressing the rod.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. Of course, the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
Example 1
Referring to fig. 1-3 and fig. 6, the invention provides a weight shifting device for bridge construction, which comprises a frame 2, wherein the frame 2 is connected with two roller bodies 1 which are arranged in parallel;
the frame 2 is H-shaped and comprises a supporting rod 23 in the middle and machine shells positioned at two sides of the supporting rod 23, and a driving unit 21 and a steering unit 22 are respectively arranged in the machine shells at two sides; the two roller bodies 1 are arranged between the machine shells at the two sides, and the two roller bodies 1 are respectively positioned at the two sides of the supporting rod 23;
the driving unit 21 comprises a driving device and two output shafts which are linked with the driving device and move synchronously, and the two output shafts are respectively linked with the roll shaft of one roll body 1; the driving device selects a fuel engine and is linked with the output shaft through a speed reducing mechanism.
The steering unit 22 comprises two steering wheels 221, each steering wheel 221 is connected with the casing through a lifting frame, the upper side of the lifting frame is connected with a vertically arranged rotating rod, the rotating rod is rotationally connected with the casing, and each rotating rod is linked with a steering mechanism in the steering unit 22.
The steering mechanism adopts a gear combination to steer, comprises steering gears fixedly connected with the end parts of each rotating rod, a steering motor is arranged between the two steering gears, a driving wheel is fixedly connected to a motor shaft of the steering motor, and the driving wheel is linked with the steering gears on two sides through different reduction gear sets, so that synchronous reverse rotation of the two steering gears is realized.
Each steering wheel 221 is linked with a driving motor, the driving motor drives the steering wheels 221 to move, the linkage mode of the driving motor and the steering wheels 221 is driven by a chain and sprocket combination, or the belt and belt pulley drive, or the gear set drive can be selected.
The lifting frame can adopt lifting rods in the prior art to be combined with the wheel frame, and the lifting rods adopt hydraulic rods.
The roll body 1 is a solid roll body, such as a rubber roll.
The roller body 1 is internally provided with an inner supporting framework, the framework is coated with elastic materials, the framework can be in various forms, the function of the framework is to play the role of internal auxiliary supporting, and the specific form can adopt the prior art and is not repeated here.
The lower part of the shell where the driving unit 22 is positioned is connected with a positioning wheel 222 through another lifting frame, the positioning wheel 222 is a sphere, the lower side of the lifting frame corresponding to the positioning wheel 222 is provided with a connecting block with a ball groove, and the positioning wheel 222 is embedded in the ball groove and is rotationally connected with the inner wall of the ball groove; the driven wheel 222 only needs to be driven, and a related driving unit is not needed to be linked;
the positioning wheel 222 and the two steering wheels 221 are distributed in an isosceles triangle.
The device adopts the roller body 1 as a moving unit, and the rotating roller body can bear heavier load unlike a common wheel type structure. By means of the roll body 1 as a main body which is mainly carried and moved. Whereas, considering that the roll body 1 is adapted to move in a straight direction, but the turning ability is insufficient, a steering mechanism is added. In the actual use process, the small weight shifting device does not need to turn when transporting objects generally, only the turning is guaranteed to be flexible when no load is applied, the scheme is characterized in that triangular wheels are distributed, when the turning is needed, the lifting frame is combined, the turning wheels 221 and the positioning wheels 222 are lowered and jack up the frame 2 by the lifting frame, the roller body 1 is slightly separated from the ground, the positioning wheels 222 play a role in positioning as a circle center, and the two turning wheels 221 rotate by taking the positioning wheels 222 as the circle center, so that the turning of the device is realized. When the transverse movement is needed, the axial direction of the steering wheel 221 can be adjusted to be vertical to the axial direction of the roller body 1, and the whole device can be driven to move by the movement of the steering wheel 221. On the basis of satisfying sufficient loading capacity, flexible transfer can be ensured in no-load.
The outer diameter of the roller body 1 is larger than the height of the frame 2, and the distance between the upper end surface of the roller body 1 and the ground surface is larger than the distance between the upper end surface of the frame 2 and the ground surface.
Through this scheme, this device has adopted the different frame 2 and the bearing form of current carrying device. Because the bridge construction process is extremely large in the ratio of the strip-shaped heavy objects, when the device is used, a mode of joint transportation of a plurality of devices can be adopted, the devices are arranged in one row or a plurality of rows, the strip-shaped building materials are directly placed on a part of the device roller bodies 1 by taking the roller bodies 1 as a moving and bearing common body, the device slowly moves forwards, when the roller bodies 1 move, the device self-displacement drives the building materials to move, and along with the movement of the roller bodies 1, the building materials on the device slowly move forwards. When the rear device is empty, the device is made to advance to the forefront end of the building material at a high speed along with the advancing of the building material, and the device is used as traction and support of the front part and is reciprocated.
Example 2
Referring to fig. 5, on the basis of embodiment 1, top plates 3 are provided on the casings on both sides, respectively;
the upper side of the shell is provided with a counter bore, and the lower side of the top plate 3 is connected with the counter bore of the shell through a lifting rod;
after the lifting rod is completely lifted, the upper end face of the lifting rod is flush with the upper end face of the roller body 1 or higher than the upper end face of the roller body 1.
The device can be used as a conventional carrying device by combining the lifting rod and the top plate 3, wherein the lifting rod is lifted and then a heavy object to be transported is placed on the top plate 3, or other bearing structures such as plates, boxes and the like are additionally arranged on the top plate 3, so that the device is used as a conventional transporting device.
Two top plates 3 are arranged on the corresponding shell of the driving unit 21, and the two top plates 3 are respectively positioned at two ends of the upper side of the shell;
the steering unit 22 is provided with a top plate 3 on the corresponding casing, and the top plate 3 is positioned in the middle of the casing.
Since the frame 2 is smaller than the roller body 1, the space is saved as much as possible, the positioning wheel 222 is arranged in the middle of the driving unit 21, and the positioning wheel 222 is provided with a lifting structure, so that the top plate 3 and lifting rods thereof are arranged at two ends of the machine shell. On the contrary, the steering wheel 221 and the lifting structure are disposed on two sides of the housing corresponding to the steering unit 22, so that the top plate 3 is disposed in the middle, and the three triangular top plates 3 can stably support the load, and save more space.
Example 3
Referring to fig. 7, on the basis of the above embodiment, the outer sides of the casings on both sides are respectively provided with distance sensor groups, each of which includes two symmetrically arranged distance sensors 4;
each distance sensor 4 is electrically connected with the driving and steering motor of the steering wheel 221 through a control module to form a control loop.
The direction of the device is aligned by the distance sensor 4 in combination with the steering wheel 221 according to the following method;
a1, setting a leveling reference object on at least one side of the advancing direction of the device, wherein the leveling reference object is a strip-shaped shielding object, and the covering height of the leveling reference object on a vertical surface exceeds the horizontal height of the distance sensor 4;
a2, adjusting and aligning the reference object to ensure that the long axis of the reference object is parallel to the axis of the carrying advancing direction; the alignment reference can be selected from cloth strips, plate bodies and the like, and if the bridge building is partially formed, the bridge side plates can also be used as the alignment reference;
a3, starting a distance sensor group facing one side of the adjustment reference object, and respectively measuring the distance of the adjustment reference object by two distance sensors 4;
a4, the distance sensor 4 feeds back the measurement result to the control module, and the control module controls the rotation direction and the rotation angle of the device by adjusting the motors corresponding to the two steering wheels 221 according to the feedback result;
a5, after the alignment in the step A4 is finished, the two distance sensors 4 of the same distance sensor group are used for measuring distance relative to the alignment reference object again, and when the measured distances of the two distance sensors 4 are equal, the steering wheel 221 is braked; and finishing the alignment of the direction of the device, and if deviation exists, continuing the alignment.
After the alignment is finished, the device is in place, the lifting frames of the steering wheel 221 and the positioning wheel 222 are retracted, and the roller body 1 is tightly contacted with the ground to wait for transportation.
The distance sensor 4 may be any one of doppler radar, ultrasound, laser or infrared distance sensor. So long as the distance between the measurable distance sensor 4 and the alignment reference is satisfied.
Since the roll body 1 itself does not have steering capability, alignment of the device is very important, and if the device is not oriented during transportation, it is easy to cause the subsequent transportation to be inexpensive. By the method, the correct advancing direction of the device can be ensured.
In A4, the control module judges the rotation angle needed by the device according to the method,
defining one distance sensor 4 in the same distance sensor group as a point A, the other distance sensor 4 as a point B, the projection of the point A on the vertical plane of the point B as a point C, and the distance between the point A and an alignment reference object as D 1 B and modulation ofThe spacing of the positive references is D 2 Then it is possible to obtain:
BC＝|D 1 -D 2 |
thus, it follows that +.cba=arccosbc/AB, i.e.,
further, it is possible to obtain that the angle α at which the device needs to be turned is:
where AB is the distance between two distance sensors 4, which is a known quantity; the direction of the device to be rotated can be determined by the judgment D 1 And D 2 Is obtained.
The distance L that any steering wheel (221) needs to move can be further calculated by the main control module and is as follows:
wherein R is the distance from the driven wheel 222 to either steering wheel 221;
from the distance L in combination with the radius of the steered wheel 221, the sum of the angles at which the steered wheel 221 needs to be turned can be known.
By combining the method, the control of the device can be controlled by manual remote control, and the direction adjustment of the device can be automatically finished by the device, so that the problem that the direction adjustment of the device is difficult to grasp by visual inspection during manual operation is avoided.
Example 4
On the basis of the above embodiment, two gear speed changing assemblies are disposed in the driving unit 21, and correspond to two rotation directions of the roller body 1 respectively, wherein one is a low-rotation-speed high-torque speed changing assembly, and the other is a high-rotation-speed low-torque speed changing assembly.
The scheme adopts a two-gear speed change mode, the transmission and the specific structure inside the transmission are realized by using the prior art, and the description is omitted here. By means of the two gears, the forward direction of the high torque gear is used when the load is advanced. When the corresponding device needs to be moved to the forefront end of the carrying queue, the device is firstly turned 180 degrees by means of the steering unit 22-stage steering wheel 221 and the positioning wheel 222, and then is switched to another gear, the roller body 1 is reversed, is driven to the forefront end of the carrying queue by a high-speed gear, is then turned 180 degrees again, is switched back to a large-torque gear, and continues to bear load.
Example 5
Referring to fig. 4, on the basis of the above embodiment, one end of each of the two housings is provided with an auxiliary supporting assembly 5;
the auxiliary supporting component 5 comprises a bracket 51 and a pressing plate 52; the bracket 51 comprises at least one push rod, the fixed end of the push rod is fixedly connected with the shell, and the movable end is hinged with the lower side surface of the pressing plate 52; the push rod can be an electric, pneumatic or hydraulic push rod;
the pressing plate 52 extends to the roller shaft of the roller body 1 at the end of the pressing plate, an arc-shaped tile plate is arranged at the outer side of the roller shaft of the roller body 1, and the outer side of the tile plate is fixedly connected with the push rod 53; a positioning plate 54 is fixedly arranged on one side of the shell, facing the roller body 1, of the positioning plate 54, a guide hole is formed in the plate body of the positioning plate 54 corresponding to the push rod 53, and the tile plate is in sliding connection with the positioning plate 54 through the push rod 53 and the guide hole;
a pressing rod 55 is arranged between the pressing rod 53 and the pressing plate 52, the pressing rod 55 is a telescopic rod, and two ends of the pressing rod 55 are hinged with the pressing plate 52 and the pressing rod 53 respectively.
Because the roller body 1 may have slight deformation after carrying the heavy objects, the upper end surface of the roller body 1 of the empty device positioned at the forefront end of the queue may be slightly higher than the lower end surface of the heavy objects, and therefore, the auxiliary supporting component 5 is additionally arranged, so that the problem is solved.
When in use, the push rod 53 is retracted, and the auxiliary pressing plate 52 is driven to have a larger inclination relative to the horizontal plane to a position slightly higher than the roller body 1, so as to be convenient for contacting with the lower surface of the rear heavy object. When the weight is in contact with the pressing plate 52, the upper portion of the pressing plate 52 is pressed down by the pushing of the weight, and a pressing force is applied to the push rod 53 via the pressing rod 55, thereby pressing the tile against the roller shaft of the roller body 1. On the one hand, the inclined pressing plate is convenient for loading the heavy objects on the roller body 1, and on the other hand, the pressing force applied by the heavy objects is applied to the roller shaft of the roller body 1 through the tile plate. The situation that the whole device is pushed when a self-braking system of the device is insufficient to resist the thrust of a heavy object is avoided.
When the loading of the weight is completed, the push rod of the bracket 51 can be controlled to slightly extend outwards, so that the inclination degree of the pressing plate 52 is reduced, the pressing plate is not stressed by the weight, and the roller body 1 can be advanced without being influenced.
A weight linear displacement method based on the weight displacement device comprises the steps of,
s1, arranging a plurality of weight shifting devices in a row, selecting the number of weight shifting devices to be used according to actual requirements, wherein at least three weight shifting devices are used, and the advancing direction of the weight shifting devices is a large-torque gear direction;
s2, placing a weight to be moved on a roller body 1 of a weight shifting device;
s3, starting a weight shifting device to move forward to a target position;
s4, along with the forward movement of the weight, when the weight shifting device at the tail end is empty, the device at the tail end is controlled to translate by at least half the width of the frame 2, and then the weight shifting device is rotated by 180 degrees;
s5, the weight shifting device performs direction alignment according to the alignment reference object;
and S6, after the alignment is completed, the weight shifting device is switched to a high-rotation speed gear, the weight is advanced to the forefront end of the weight in the reverse rotation direction of the roller body 1, then the weight is rotated for 180 degrees again, and the weight shifting device translates in the same amount as the S4 to wait for the weight to be carried on the roller body 1.
S7, repeating the steps S3-S6 until the weight moves to the required position.
The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (9)
1. The weight shifting device for bridge construction is characterized by comprising a frame (2), wherein the frame (2) is connected with two parallel roller bodies (1);
the frame (2) is H-shaped and comprises a supporting rod (23) in the middle and machine shells positioned at two sides of the supporting rod (23), and a driving unit (21) and a steering unit (22) are respectively arranged in the machine shells at two sides; the two roller bodies (1) are arranged between the machine shells at the two sides, and the two roller bodies (1) are respectively positioned at the two sides of the supporting rod (23);
the driving unit (21) comprises a driving device and two output shafts which are linked with the driving device and move synchronously, and the two output shafts are respectively linked with the roll shaft of one roll body (1);
the steering unit (22) comprises two steering wheels (221), each steering wheel (221) is connected with the shell through a lifting frame, the upper side of the lifting frame is connected with a vertically arranged rotating rod, the rotating rod is rotationally connected with the shell, and each rotating rod is linked with a steering mechanism in the steering unit (22);
the lower part of the shell where the driving unit (21) is positioned is connected with a positioning wheel (222) through another lifting frame, the positioning wheel (222) is a sphere, a connecting block with a ball groove is arranged at the lower side of the lifting frame corresponding to the positioning wheel (222), and the positioning wheel (222) is embedded in the ball groove and is rotationally connected with the inner wall of the ball groove;
the positioning wheels (222) and the two steering wheels (221) are distributed in an isosceles triangle;
a top plate (3) is respectively arranged on the machine shell at two sides;
the upper side of the shell is provided with a counter bore, and the lower side of the top plate (3) is connected with the counter bore of the shell through a lifting rod;
after the lifting rod is completely lifted, the upper end face of the lifting rod is flush with the upper end face of the roller body (1) or higher than the upper end face of the roller body (1).
2. The weight shift device for bridge construction according to claim 1, wherein the outer diameter of the roller body (1) is larger than the height of the frame (2), and the distance between the upper end surface of the roller body (1) and the ground surface is larger than the distance between the upper end surface of the frame (2) and the ground surface.
3. The weight shifting device for bridge construction according to claim 2, wherein two top plates (3) are arranged on the corresponding casing of the driving unit (21), and the two top plates (3) are respectively positioned at two ends of the upper side of the casing;
a top plate (3) is arranged on the casing corresponding to the steering unit (22), and the top plate (3) is positioned in the middle of the casing.
4. A weight shifting device for bridge construction according to claim 3, characterized in that the outer sides of the casings on both sides are respectively provided with distance sensor groups, each distance sensor group comprising two symmetrically arranged distance sensors (4);
each distance sensor (4) is electrically connected with a driving and steering motor of the steering wheel (221) through a control module to form a control loop.
5. The weight shift device for bridge construction according to claim 4, wherein the distance sensor (4) is combined with a steering wheel (221), and the direction of the device is aligned according to the following method;
a1, setting a leveling reference object on at least one side of the advancing direction of the device, wherein the leveling reference object is a strip-shaped shielding object, and the covering height of the leveling reference object on a vertical surface exceeds the horizontal height of the distance sensor (4);
a2, adjusting the alignment reference object to ensure that the long axis of the alignment reference object is parallel to the axis of the carrying advancing direction;
a3, starting a distance sensor group facing one side of the adjustment reference object, and respectively measuring the distance of the adjustment reference object by two distance sensors 4;
a4, the distance sensor (4) feeds back the measurement result to the control module, and the control module controls the rotation direction and the rotation angle of the device by adjusting the corresponding motors of the two steering wheels (221) according to the feedback result;
a5, after the alignment in the step A4 is finished, the two distance sensors (4) of the same distance sensor group are used for measuring distance relative to an alignment reference object again, and when the two distance sensors (4) are used for measuring the distance to be equal, the steering wheel (221) is braked; and finishing the alignment of the direction of the device, and if deviation exists, continuing the alignment.
6. The weight shift device for bridge construction according to claim 5, wherein the method for determining the rotation angle required by the device in A4 is that,
defining one distance sensor (4) in the same distance sensor group as a point A, the other distance sensor (4) as a point B, the projection of the point A on the vertical plane of the point B as a point C, and the distance between the point A and an alignment reference object as D 1 B and the distance between the alignment reference object and the reference object is D 2 Then it is possible to obtain:
the angle alpha at which the device needs to be rotated is:
wherein AB is the distance between the two distance sensors (4), which is a known quantity; the direction of the device to be rotated is determined by D 1 And D 2 Is obtained.
7. The weight shifting device for bridge construction according to claim 2, wherein two gear speed changing assemblies are arranged in the driving unit (21), and correspond to two rotation directions of the roller body (1), wherein one is a low-rotation-speed high-torque speed changing assembly, and the other is a high-rotation-speed low-torque speed changing assembly.
8. The weight shifting device for bridge construction according to any one of claims 1 to 7, wherein one end of each of the two housings is provided with a set of auxiliary supporting members (5);
the auxiliary supporting component (5) comprises a bracket (51) and a pressing plate (52); the bracket (51) comprises at least one push rod, the fixed end of the push rod is fixedly connected with the shell, and the movable end of the push rod is hinged with the lower side surface of the pressing plate (52);
the pressing plate (52) extends to a roll shaft of the roll body (1) at the end of the pressing plate, an arc-shaped tile plate is arranged on the outer side of the roll shaft of the roll body (1), and a push rod (53) is fixedly connected to the outer side of the tile plate; a positioning plate (54) is fixedly arranged on one side of the shell, facing the roller body (1), of the positioning plate (54), a guide hole is formed in the plate body of the positioning plate (54) corresponding to the push rod (53), and the tile plate is in sliding connection with the positioning plate (54) through the push rod (53) and the guide hole;
a compression bar (55) is arranged between the push bar (53) and the pressing plate (52), the compression bar (55) is a telescopic bar, and two ends of the compression bar (55) are respectively hinged with the pressing plate (52) and the push bar (53).
9. A method for linearly displacing a weight based on the weight displacing device as claimed in any one of claims 1 to 7, comprising the steps of,
s1, arranging a plurality of weight shifting devices in a row, wherein the advancing direction of the weight shifting devices is the direction of a large torque gear;
s2, placing a weight to be moved on a roller body (1) of the weight shifting device;
s3, starting a weight shifting device to move forward to a target position;
s4, along with the forward movement of the weight, when the weight shifting device at the tail end is empty, the device at the tail end is controlled to translate by at least half the width of the frame (2), and then the weight shifting device is rotated by 180 degrees;
s5, the weight shifting device performs direction alignment according to the alignment reference object;
s6, after alignment is completed, the weight shifting device is switched to a high-rotation speed gear, the weight is advanced to the forefront end of the weight in the reverse rotation direction of the roller body (1), then the weight is rotated 180 degrees again, and the weight is translated in the same amount as the S4, so that the weight is waited to be carried on the roller body (1);
s7, repeating the steps S3-S6 until the weight moves to the required position.
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| CN202210043723.4A CN114291176B (en) | 2022-01-14 | 2022-01-14 | Heavy object displacement device for bridge construction |
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| CN114291176A (en) | 2022-04-08 |
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