Steel mesh auxiliary bending device and use method thereof

Abstract

The present invention discloses an auxiliary bending device for steel mesh and a method for using the same. The auxiliary bending control device for steel mesh has a simple structure. When the steel mesh is bent by the auxiliary bending control device, the lateral and vertical walking speeds of the fixed connection position between the free end of the steel wire rope and the to-be-bent portion of the steel mesh are controlled by controlling the lifting mechanism. The steel wire rope is used to provide an adaptive pulling force to automatically offset the gravity of the steel mesh that changes regularly during the bending process, thereby avoiding deformation of the steel mesh caused by the original gravity factor and ensuring the bending accuracy. The entire auxiliary bending control method is easy to operate, can adapt to changes in the variable cross-sectional size required by different bending shapes of the steel mesh, has a wide range of applicability, and can also realize the bending operation of a single-person production line of a steel mesh with multiple edges or multiple bending portions. Compared with the traditional method of prefabricating steel mesh by pieces, the mesh production working hours and the number of operators are further reduced, thereby greatly improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel mesh forming, and more specifically, to a steel mesh auxiliary bending device and a method for using the same. Background Art

[0002] The rapid advancement of industrialization and urbanization has driven the rapid development of the construction industry. Construction steel bars have become the most consumed type of steel products. As the main load-bearing component of reinforced concrete structures, steel bars play an irreplaceable role in engineering construction at home and abroad. Especially in bridge construction, facing the increasing requirements of bridge length and span, the structure of bridge tower steel cages has become more complex, with the characteristics of multiple edges, super-large sections and variable sections, that is, it needs to change according to the cross-sectional shape of the designed bridge piers.

[0003] At present, the main automated production and processing methods for steel cages include prefabricating steel mesh in pieces and then splicing them into parts. This method is more effective for the construction of through-section steel parts. Prefabrication in pieces reduces manpower requirements and shortens the construction period. However, because there are too many planes of multi-edged variable-section steel mesh, there is a need to assemble multiple planes in sequence, the accuracy is difficult to control and the connection cost is high. When using the bending process, in the process of bending large meshes, problems such as mesh deformation or low bending angle accuracy often occur. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] Another object of the present invention is to provide a steel mesh auxiliary bending device and a method of using the device to solve the problem that large multi-edge steel meshes are easy to deform and have low bending accuracy.

[0006] In order to achieve these purposes and other advantages according to the present invention, a steel mesh auxiliary bending device is provided, comprising:

[0007] The bending mechanism comprises a bending machine, the bending machine is used to bend a steel mesh, the steel mesh has a horizontal portion and a portion to be bent, the steel mesh is fixed on the bending machine and the bending line of the steel mesh coincides with the bending line of the bending machine;

[0008] The hoisting mechanism includes a transverse moving mechanism arranged above the bending machine and a lifting mechanism arranged on the transverse moving mechanism, the lifting mechanism is provided with a steel wire rope downward, and the free end of the steel wire rope is fixedly connected to a position of the to-be-bent portion of the steel mesh near the edge;

[0009] The lifting tooling comprises a reference plane bracket, a bending plane bracket and a connecting bracket. The reference plane bracket is a horizontal plate fixed on the horizontal part of the steel mesh. The bending plane bracket is an inclined plate. The two ends of the connecting bracket are respectively fixedly connected to the bending plane bracket and the reference plane bracket, and the angle between the bending plane bracket and the reference plane bracket is the angle to be bent.

[0010] Preferably, it also includes:

[0011] A control system, comprising a lateral movement control module arranged on the lateral movement mechanism, a vertical movement control module arranged on the lifting mechanism, a bending control module arranged on the bending machine, and a control chip electrically connected to the lateral movement control module, the vertical movement control module, and the bending control module respectively;

[0012] The detection system comprises a tension sensor arranged on the steel wire rope, and the tension sensor is wirelessly connected to a control chip.

[0013] Preferably, the lateral moving mechanism is a gantry truck that moves horizontally along the bending direction, the lifting mechanism is a wire rope electric hoist arranged on the gantry truck, and the wire rope is led out by the wire rope electric hoist.

[0014] Preferably, the detection system further comprises an absolute value encoder arranged on the bending machine for detecting the bending angle of the bending machine in real time, and the absolute value encoder is electrically connected to the control chip.

[0015] Preferably, the steel mesh is provided with portions to be bent on both sides in the transverse direction, the bending machine is used to bend the two portions to be bent at the same time, the lifting mechanism and the lifting tooling are respectively provided with one corresponding to the two portions to be bent of the steel mesh, and the free ends of the two steel wire ropes are respectively fixedly connected to the portions to be bent on the corresponding sides.

[0016] The present invention also provides a method for using the steel mesh auxiliary bending device, comprising the following steps:

[0017] S1. Determine the horizontal part, the part to be bent, the corresponding bending angle α, and the bending line of the steel mesh. Place the steel mesh horizontally on the bending machine. Clamp the steel mesh on the bending machine after the bending line of the steel mesh coincides with the bending line of the bending machine. Then move the lifting mechanism so that the free end of the steel wire rope is fixedly connected to the part to be bent of the steel mesh when the wire rope is in a vertical free state.

[0018] S2. Fix the reference plane bracket of the lifting tool on the horizontal part of the steel mesh so that the intersection of the straight lines where the reference plane bracket and the bending plane bracket are located on the vertical plane coincides with the bending point where the bending line is located;

[0019] S3, setting the bending angle α and the bending speed ω on the bending machine, then starting the bending machine to bend the steel mesh, and at the same time starting the hoisting mechanism, controlling the horizontal moving speed of the lateral moving mechanism, and controlling the speed of the lifting mechanism to lift the wire rope, so that the wire rope provides a pulling force F to the part to be bent of the steel mesh to compensate for the gravity G of the part to be bent of the steel mesh;

[0020] S4. When the steel mesh reaches the required bending angle, the portion to be bent of the steel mesh becomes the bent portion, the bent portion is fixedly connected to the bending surface bracket, the steel wire rope is removed, and then the steel mesh fixed with the lifting tooling is transferred as a whole to the installation site.

[0021] Preferably, in step S3, when the steel wire rope compensates for the gravity of the portion to be bent of the steel mesh, the fixed connection point is set as the zero point of the lifting mechanism, and the position of the free end of the steel wire rope after the steel mesh is bent is determined as the lifting point according to the distance R between the zero point of the lifting mechanism and the bending point and the angle to be bent. The combined movement velocity V=ω·R of the fixed connection point from the zero point of the lifting mechanism to the lifting point, and the combined movement velocity V is divided into the horizontal movement velocity V1=ω·R·sin(ω·t) of the lateral movement mechanism and the up and down movement velocity V2=ω·R·cos(ω·t) of the free end of the steel wire rope, the distance between the free end of the steel wire rope and the center of gravity of the portion to be bent is set to D1, and the distance between the bending point and the center of gravity of the portion to be bent is set to D2, then the tension provided by the steel wire rope

[0022] Preferably, the lateral moving mechanism and the lifting mechanism are controlled by setting up a control system, a protection program is set in the control system and an alarm is connected, when F≥G, the control system controls the lateral moving mechanism and the lifting mechanism to stop moving and activates the alarm at the same time.

[0023] Preferably, a connecting plate or a plurality of connecting rods are provided between the two reference plane brackets.

[0024] Preferably, the bending surface bracket is symmetrically provided with two rows of through holes on both sides of the extension direction of the bending line, each row of through holes includes a plurality of square holes evenly spaced and symmetrically distributed along the length direction of the through holes, and a fixing mechanism is correspondingly provided above each row of through holes to fix the bending portion of the steel mesh with the bending surface bracket, and the fixing mechanism includes:

[0025] A plurality of C-shaped stoppers, one of which is provided for each square hole and the opening direction is consistent with the length direction of the through hole, the C-shaped stopper can pass through the square hole in a direction perpendicular to the bending surface bracket and the distance between the upper and lower side surfaces is consistent with the sum of the thicknesses of the bending surface bracket and the to-be-bent portion of the steel mesh, and a first synchronous connecting rod is provided between all two adjacent C-shaped stoppers on the same side of the length direction of the through hole;

[0026] A plurality of square rods are arranged along the extension direction of the bending line, the two ends of a square rod are correspondingly arranged in two C-shaped limiters located in the same horizontal direction, and a second synchronous connecting rod is arranged between all two adjacent square rods located on the same side of the length direction of the through hole;

[0027] A pair of pushing mechanisms, which are respectively arranged at the two ends of the bending surface bracket in the extension direction of the bending line, each pushing mechanism includes a limit frame arranged along the length direction of a row of through holes on the corresponding side, the height of the limit frame is consistent with the thickness of the bending surface bracket, the two ends of all square rods extend out of the corresponding C-shaped limit pieces and enter the two limit frames and can move along the length direction of the limit frames, each limit frame is respectively provided with screw holes at the two ends in the length direction, a screw rod is arranged in each screw hole along the length direction of the limit frame, and a through hole perpendicular to the length direction of the limit frame is also arranged in the center of each limit frame;

[0028] A pair of I-shaped parts, each corresponding to a pair of pushing mechanisms is provided with one, the I-shaped parts have an upper transverse part, a middle part and a lower transverse part, wherein the lower transverse part and the upper transverse part are parallel to the length direction of the limit frame, and the upper transverse part is located on the upper surface of the corresponding limit frame, and the middle part is located in the through hole of the limit frame on the corresponding side, the sum of the thickness of the limit frame, the bending surface bracket, and the part to be bent of the steel mesh is equal to the height of the middle part, and a pair of springs are symmetrically arranged on both sides of the lower half of each middle part, and a baffle with the same height as the thickness of the bending surface bracket is respectively arranged at the free ends of the pair of springs, and the maximum compression length of the pair of springs, the pair of baffles The sum of the thickness of the plate and the width of the middle portion is slightly less than or equal to the spacing between the two middlemost square rods close to the extreme position and slightly less than or equal to the width of the through hole. The width of the upper half of the middle portion is slightly less than or equal to the spacing between the two middlemost square rods close to the extreme position and slightly less than or equal to the width of the through hole. The lower horizontal portion includes a long rod, and both ends of the long rod are respectively provided with square sockets consistent with the extension direction of the square rods. A pin is provided in each square socket, and the spacing between the two pins is consistent with the spacing between any pair of symmetrically arranged square holes and the sum of the thickness of the bottom surfaces of the two C-shaped limit members.

[0029] The present invention includes at least the following beneficial effects: the auxiliary bending control device of the steel mesh has a simple structure. When the steel mesh is bent by using the auxiliary bending control device of the steel mesh, the horizontal and vertical walking speeds of the fixed connection position between the free end of the wire rope and the to-be-bent portion of the steel mesh are controlled by controlling the lifting mechanism. The steel wire rope is used to provide an adaptive pulling force to automatically offset the gravity of the steel mesh that changes regularly during the bending process, thereby avoiding the deformation of the steel mesh caused by the original gravity factor and ensuring the bending accuracy. The entire auxiliary bending control method is easy to operate, can adapt to the changes in the variable cross-sectional dimensions required by different bending shapes of the steel mesh, has a wide range of applicability, and can also realize the bending operation of a single-person production line of a steel mesh with multiple edges or multiple bending portions. Compared with the traditional method of prefabricating steel mesh by piece, the mesh production working hours and the number of operators are further reduced, greatly improving the production efficiency.

[0030] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the steel mesh of the present invention before being bent;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention in which the steel mesh is bent;

[0033] Figure 3 It is a force diagram of the bent portion of the steel mesh of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the fixing mechanism of the present invention when the C-shaped limiting member is located at the initial position;

[0035] Figure 5 It is a structural schematic diagram of the fixing mechanism of the present invention when the I-shaped piece is located at the initial position;

[0036] Figure 6 It is a schematic diagram of the structure of the fixing mechanism of the present invention when the I-shaped piece clamps the steel mesh.

[0037] Explanation of the reference numerals in the specification: 1. bending machine, 2. horizontal part, 3. part to be bent, 4. lateral moving mechanism, 5. lifting mechanism, 6. wire rope, 7. reference plane bracket, 8. bending surface bracket, 9. connecting bracket, 10. tension sensor, 11. absolute encoder, 12. bending part, 13. square hole, 14. C-type limiter, 15. square rod, 16. limit frame, 17. screw, 18. upper horizontal part, 19. middle part, 20. lower horizontal part, 21. spring, 22. baffle, 23. square socket. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0039] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] like Figure 1 , Figure 2 As shown, the present invention provides a steel mesh auxiliary bending device, comprising:

[0041] The bending mechanism comprises a bending machine 1, the bending machine 1 is used to bend a steel mesh, the steel mesh has a horizontal portion 2 and a portion to be bent 3, the steel mesh is fixed on the bending machine and the bending line of the steel mesh coincides with the bending line of the bending machine 1;

[0042] The hoisting mechanism includes a transverse moving mechanism 4 arranged above the bending machine 1 and a lifting mechanism 5 arranged on the transverse moving mechanism 4. The lifting mechanism 5 is provided with a steel wire rope 6 downward, and the free end of the steel wire rope 6 is fixedly connected to a position close to the edge of the to-be-bent portion 3 of the steel mesh;

[0043] The lifting tooling comprises a reference plane bracket 7, a bending plane bracket 8 and a connecting bracket 9. The reference plane bracket 7 is a horizontal plate fixed on the horizontal part 2 of the steel mesh. The bending plane bracket 8 is an inclined plate. The two ends of the connecting bracket 9 are respectively fixedly connected to the bending plane bracket 8 and the reference plane bracket 7 and the angle between the bending plane bracket 8 and the reference plane bracket 7 is the angle to be bent.

[0044] The steel mesh auxiliary bending control device is operated as follows:

[0045] (1) Operation preparation: Design the bending angle and the length of each side of the steel mesh according to the requirements of the bridge pier, determine the length of the horizontal part and the part to be bent of the steel mesh, the straight line where the horizontal part and the part to be bent intersect is the bending line, the connection point between the horizontal part and the part to be bent on the vertical plane is the bending point set as O, place the steel mesh to be bent horizontally on the bending machine, install the lifting tooling, the intersection of the straight lines where the reference plane bracket and the bending plane bracket are located on the vertical plane coincides with the bending point O, set the connection point between the reference plane bracket and the connecting bracket on the vertical plane as A, and the connection point between the bending plane bracket and the connecting bracket on the vertical plane as B, then the distance from A to O L1, the distance from B to O L2 and the length from A to B, i.e. the length of the connecting bracket L3, can determine the unique bending angle α = 180° - α1, The angles between the reference plane bracket, bending plane bracket and connecting bracket of the lifting fixture and the lengths of L1, L2 and L3 are determined by reverse calculation based on the angle α to be bent. Then the reference plane bracket of the lifting fixture is horizontally fixed on the horizontal part of the steel mesh. At this time, the bending surface bracket and the connecting bracket are not in contact with the steel mesh, and the lower part of the bending surface bracket is suspended in the air. In addition, the free end of the wire rope of the lifting mechanism is fixedly connected to the position of the part to be bent near the upper edge of the steel mesh. Pay attention to maintaining balance. The fixed connection position is preferably close to the edge of the part to be bent for easy fixation and labor saving. Before starting the bending operation, ensure that the wire rope is in a freely extended vertical state.

[0046] (2) Bending operation: The bending angular velocity of the bending machine is set according to the bending angle. The motion path and the combined motion velocity V of the free end of the wire rope and the fixed connection point of the to-be-bent part of the steel mesh are calculated based on the bending angular velocity. V includes the horizontal moving velocity V1 = ω·R·sin(ω·t) and the up and down moving velocity V2 = ω·R·cos(ω·t) of the lateral moving mechanism, where R is the distance between N and the bending point O. The horizontal moving velocity of the lateral moving mechanism and the moving velocity of the lifting mechanism to lift the wire rope are controlled and set. Then the bending machine is started to bend the steel mesh. At the same time, the lifting mechanism is started so that the wire rope provides a tension F to the to-be-bent part of the steel mesh, and the gravity G of the to-be-bent part of the steel mesh is compensated in real time. The mass distribution of the steel mesh is uniform. The distance between the free end of the wire rope and the center of gravity of the to-be-bent part is set to D1, and the distance between the bending point and the center of gravity of the to-be-bent part is set to D2. The tension provided by the wire rope is

[0047] (3) Bending is completed: When the steel mesh reaches the required bending angle, the portion to be bent 3 of the steel mesh becomes the bending portion 12, and the bending portion 12 is fixedly connected to the bending surface bracket to maintain the bending shape of the steel mesh. The steel wire rope is removed, and then the steel mesh fixed with the lifting tool is transferred as a whole to the installation site. After arriving at the installation site, the bending portions of two or more steel meshes are fixedly connected to complete the production of the steel cage.

[0048] The auxiliary bending control device of the steel mesh of the present invention has a simple structure. During the bending process of the steel mesh, the horizontal and vertical walking speeds of the fixed connection position between the free end of the steel wire rope and the to-be-bent portion of the steel mesh are controlled by controlling the lifting mechanism. The steel wire rope is used to provide an adaptive pulling force to automatically offset the gravity of the steel mesh that changes regularly during the bending process, thereby avoiding the deformation of the steel mesh caused by the original gravity factor and ensuring the bending accuracy. The entire auxiliary bending control method is easy to operate, can adapt to the changes in the variable cross-sectional dimensions required by different bending shapes of the steel mesh, has a wide range of applicability, and can also realize the single-person production line bending operation of the steel mesh with multiple edges and multiple bending portions. Compared with the traditional method of prefabricating steel mesh by piece, the mesh production working hours and the number of operators are further reduced, which greatly improves the production efficiency.

[0049] In another technical solution, Figure 1 , Figure 2 As shown, it also includes:

[0050] A control system, comprising a lateral movement control module arranged on the lateral movement mechanism 4, a vertical movement control module arranged on the lifting mechanism 5, a bending control module arranged on the bending machine 1, and a control chip electrically connected to the lateral movement control module, the vertical movement control module, and the bending control module respectively;

[0051] The detection system includes a tension sensor 10 arranged on the steel wire rope 6, and the tension sensor 10 is wirelessly connected to the control chip.

[0052] The control chip controls the lateral movement control module, the vertical movement control module and the bending control module, thereby accurately controlling the lateral movement speed and the vertical movement speed of the fixed connection point between the free end of the wire rope and the part to be bent of the steel mesh, and controlling the bending speed of the bending machine at the same time. The tension sensor measures the tension F of the wire rope in real time and transmits the data to the control system. It is set as a tension sensor with high tension measurement accuracy, long service life, simple structure and miniaturization, and avoids affecting the tension of the wire rope.

[0053] In another technical solution, Figure 1 , Figure 2 As shown, the lateral moving mechanism 4 is a gantry truck that moves horizontally along the bending direction, and the lifting mechanism 5 is an electric hoist of a wire rope 6 arranged on the gantry truck, and the wire rope 6 is led out by the electric hoist of the wire rope 6.

[0054] In the prior art, a truss car is installed on a truss generally used indoors and is driven by a motor to travel on the truss. The lifting mechanism is a wire rope electric hoist. The entire lifting mechanism has a simple structure, and the lifting speed and movement accuracy of the wire rope are controllable.

[0055] In another technical solution, Figure 1 , Figure 2 As shown, the detection system further includes an absolute value encoder 11 disposed on the bending machine 1 for real-time detection of the bending angle of the bending machine 1 , and the absolute value encoder 11 is electrically connected to the control chip.

[0056] The absolute encoder can be connected to the rotating shaft of the bending machine through a coupling. The absolute encoder can be set to detect the real-time bending angle of the bending machine, accurately monitor the bending process, and ensure the bending quality.

[0057] In another technical solution, Figure 2 As shown, the steel mesh is provided with portions to be bent 3 on both sides in the lateral direction, the bending machine 1 is used to bend the two portions to be bent 3 simultaneously, the lifting mechanism and the lifting tooling are respectively provided with one corresponding to the two portions to be bent 3 of the steel mesh, and the free ends of the two steel wire ropes 6 are respectively fixedly connected to the portions to be bent 3 on the corresponding sides.

[0058] Since the steel mesh is generally bent into a symmetrical structure when making a steel cage, such as a half of a square or hexagonal cross-section of the steel cage, two portions to be bent are set for one steel mesh, and hoisting mechanisms and hoisting tools are respectively provided for the two portions to be bent. The two portions to be bent of one steel mesh can be bent into shape at one time, and after bending, they are transported to the installation site. The bent portions of the two steel meshes are fixedly connected by welding or the like to form a steel cage, thereby significantly improving the bending efficiency and the subsequent steel cage production efficiency.

[0059] The present invention also provides a method for using the steel mesh auxiliary bending device, Figure 1 , Figure 2 , Figure 3 As shown, the following steps are included:

[0060] S1, determine the horizontal part 2, the part to be bent 3 and the corresponding bending angle α and bending line of the steel mesh, place the steel mesh horizontally on the bending machine 1, make the bending line of the steel mesh coincide with the bending line of the bending machine 1, clamp the steel mesh on the bending machine 1, and then move the lifting mechanism so that the free end of the steel wire rope 6 is fixedly connected to the part to be bent 3 of the steel mesh when it is in a vertical free state;

[0061] S2, fix the reference plane bracket 7 of the lifting tool on the horizontal part 2 of the steel mesh, so that the intersection of the straight lines where the reference plane bracket 7 and the bending plane bracket 8 are located on the vertical plane coincides with the bending point where the bending line is located;

[0062] S3, setting the bending angle α and the bending speed ω on the bending machine 1, then starting the bending machine 1 to bend the steel mesh, and at the same time starting the hoisting mechanism, controlling the horizontal moving speed of the lateral moving mechanism 4, and controlling the speed of the lifting mechanism 5 to lift the wire rope 6, so that the wire rope 6 provides a pulling force F to the bending portion 3 of the steel mesh to compensate for the gravity G of the bending portion 3 of the steel mesh;

[0063] S4. When the steel mesh reaches the required bending angle, the to-be-bent portion 3 of the steel mesh becomes the bent portion 12. The bent portion 12 is fixedly connected to the bending surface bracket 8, the steel wire rope 6 is removed, and then the steel mesh fixed with the lifting tooling is transferred as a whole to the installation site.

[0064] Depending on the length of the lifting mechanism and the part to be bent of the steel mesh, or the steel mesh reserves steel bars for the convenience of subsequent assembly so that the center of gravity of the part to be bent does not coincide with the center, during the bending movement of the steel mesh, part of the gravity of the wire rope is borne by the bending point, and the formula is used to obtain the remaining gravity of the part to be bent of the steel mesh that needs to be compensated.

[0065] In another technical solution, Figure 1 , Figure 2 As shown, the lateral moving mechanism 4 and the lifting mechanism 5 are controlled by setting up a control system, a protection program is set in the control system and an alarm is connected. When F≥G, the control system controls the lateral moving mechanism 4 and the lifting mechanism 5 to stop moving and starts the alarm at the same time.

[0066] The protection degree is set to protect the bending process of the steel mesh to avoid excessive bending of the steel mesh, further ensuring the quality of the bending operation.

[0067] In addition, due to the different movement accuracy of lateral moving mechanisms and lifting mechanisms of different specifications, after moving too fast in a certain moving unit, it will stop for a short time and then repeat the movement of the next moving unit. Therefore, during the bending process, a correction coefficient can be set for the lifting mechanism, that is, a speed correction coefficient K1 is set for the horizontal movement speed V1 of the lateral moving mechanism, and a speed correction coefficient K2 is set for the up and down movement speed V2 of the free end of the wire rope. The corrected horizontal movement speed is K1×V1, and the up and down movement speed is K2×V2. According to the movement and stop ratio settings of the motion mechanism, the correction coefficient can be set to 0.9 or 1.1, 0.8 or 1.2.

[0068] In another technical solution, Figure 2As shown, a connecting plate or a plurality of connecting rods are arranged between the two reference plane brackets 7. A connecting plate or connecting rod of suitable length is arranged between the reference plane brackets 7 of the two lifting fixtures according to the length design requirements of the horizontal portion 2 of the steel mesh, so as to further improve the rigidity of the lifting fixture, facilitate the stability of the bending process of the steel mesh, and ensure that the horizontal portion of the steel mesh is not easily squeezed or bent during the transfer process.

[0069] In another technical solution, Figure 4 , Figure 5 , Figure 6 As shown, the bending surface bracket is symmetrically provided with two rows of through holes on both sides of the extension direction of the bending line, each row of through holes includes a plurality of square holes 13 evenly spaced and symmetrically distributed along the length direction of the through holes, and a fixing mechanism is correspondingly provided above each row of through holes to fix the bending portion 12 of the steel mesh with the bending surface bracket 8, and the fixing mechanism includes:

[0070] A plurality of C-shaped stoppers 14 are provided for each square hole 13 and the opening direction is consistent with the length direction of the through hole. The C-shaped stoppers 14 can pass through the square hole 13 in a direction perpendicular to the bending surface bracket 8 and the distance between the upper and lower sides is consistent with the sum of the thicknesses of the bending surface bracket 8 and the to-be-bent portion 3 of the steel mesh. A first synchronous connecting rod is provided between all two adjacent C-shaped stoppers 14 on the same side of the length direction of the through hole.

[0071] A plurality of square rods 15 are arranged along the extension direction of the bending line, and the two ends of a square rod 15 are correspondingly arranged in two C-shaped stoppers 14 located in the same horizontal direction, and a second synchronous connecting rod is arranged between all two adjacent square rods 15 located on the same side of the length direction of the through hole;

[0072] A pair of pushing mechanisms, which are respectively arranged at the two ends of the bending surface bracket 8 in the extension direction of the bending line, each pushing mechanism includes a limit frame 16 arranged along the length direction of a row of through holes on the corresponding side, the height of the limit frame 16 is consistent with the thickness of the bending surface bracket 8, both ends of all square rods 15 extend out of the corresponding C-shaped limit pieces 14 and enter the two limit frames 16 and can move along the length direction of the limit frames 16, each limit frame 16 is respectively provided with screw holes at both ends in the length direction, a screw rod 17 is arranged in each screw hole along the length direction of the limit frame, and a through hole perpendicular to the length direction of the limit frame 16 is also arranged at the center of each limit frame 16;

[0073] A pair of I-shaped pieces, each of which corresponds to a pair of pushing mechanisms, is provided with one, and the I-shaped piece has an upper transverse portion 18, a middle portion 19 and a lower transverse portion 20, wherein the lower transverse portion 20 and the upper transverse portion 18 are parallel to the length direction of the limit frame 16 and the upper transverse portion 18 is located on the upper surface of the corresponding limit frame 16, and the middle portion 19 is located in the through hole of the limit frame 16 on the corresponding side, and the sum of the thickness of the limit frame 16, the bending surface bracket 8, and the portion to be bent 3 of the steel mesh is equal to the height of the middle portion 19, and a pair of springs 21 are symmetrically arranged on both sides of the lower half of each middle portion 19, and a baffle 22 with the same height as the thickness of the bending surface bracket 8 is respectively arranged at the free ends of the pair of springs 21, and the maximum The sum of the compression length, the thickness of a pair of baffles 22 and the width of the middle portion 19 is slightly less than or equal to the spacing between the two middle square rods 15 close to the extreme position and slightly less than or equal to the width of the through hole. The width of the upper half of the middle portion 19 is slightly less than or equal to the spacing between the two middle square rods 15 close to the extreme position and slightly less than or equal to the width of the through hole. The lower horizontal portion 20 includes a long rod, and square sockets 23 consistent with the extension direction of the square rods 15 are respectively provided at both ends of the long rod. A pin is provided in each square socket 23, and the spacing between the two pins is consistent with the spacing between any pair of symmetrically arranged square holes 13 and the sum of the thickness of the bottom surfaces of the two C-shaped limit members 15.

[0074] The fixing mechanism realizes the precise fixing of the steel mesh and the bending surface bracket. The specific use process of the fixing mechanism includes the following parts:

[0075] (1) Initial state: The size and arrangement of the square holes of the fixing mechanism can be set according to the grid of the steel mesh. The two ends of each square rod are respectively located in the limit frame on the corresponding side and in the opening of the corresponding C-shaped limit piece. When not in use, the two ends of each square rod are respectively close to the two ends of the limit frame. Each C-shaped limit piece and the corresponding square rod are respectively located on the outside of each corresponding square hole. The two ends of the square rod just clamp the corresponding C-shaped limit piece so that the C-shaped limit piece will not fall from the square hole. The two springs and two baffles in the middle part of the I-shaped piece are located in the limit frame and between the two middle square rods. When the spring is not squeezed, it is in a free state so that the spacing between the two baffles is greater than the width of the through hole. The entire I-shaped piece is clamped on the limit frame. In addition, since the lower horizontal part of the I-shaped piece is consistent with the height of the bending surface bracket, it can be achieved that the pin is not inserted or the end face of the pin close to the steel mesh is just flush with the lower horizontal part.

[0076] (2) Fixing in a direction perpendicular to the plane of the steel mesh: After the steel mesh is bent, the bent portion needs to be fixed to the bending surface bracket. When fixing, first screw the screws into all the screw holes of the two limit frames synchronously, so that the square rods located on both sides of the length direction of the through hole are moved to the center of the limit frame at the same time under the action of the second synchronous connecting rod to be directly above the corresponding square hole, and then the square rods continue to move toward the center for about the displacement of the square hole and then stop. During the movement of the square rods, the baffle and spring of the I-shaped piece are also squeezed. At this time, each C-shaped limit piece is moved through the first A synchronous connecting rod is simultaneously corrected to the position above the square hole and pushed downward into the square hole. After that, each C-shaped limit piece continues to move toward the center of the limit frame, so that one side of a grid of the steel mesh parallel to the bending line and the bending surface bracket part above it enter the opening of the C-shaped limit piece at the same time. At the same time, the square rod is just pressed on the upper surface of each corresponding C-shaped limit piece. When the C-shaped limit pieces symmetrically located on both sides of the length direction of the through hole can no longer move toward the center of the limit frame, the screw operation is stopped. As a result, the steel mesh is fixed in a direction perpendicular to the plane.

[0077] (3) Fixing in a direction parallel to the plane where the steel mesh is located: After the C-shaped limit piece cannot continue to move toward the center of the limit frame, the two springs in the middle part of the I-shaped piece are squeezed by the square rods on both sides so that the spacing between the baffles becomes small enough, so that when the upper horizontal part of the I-shaped piece is pressed downward again, the middle part can move downward in the through hole in sequence, and the springs extend after coming out of the through hole of the limit frame under the action of the springs restoring elastic deformation, clamping the limit frame between the springs and the upper horizontal part, and then operating the pins in the square plug holes so that the pins extend to the bottom of the steel mesh. Since the spacing between the two pins is consistent with the spacing between any pair of symmetrically arranged square holes and the sum of the thicknesses of the bottom surfaces of the two C-shaped limit pieces, they can clamp a pair of C-shaped limit pieces located on both sides of the length direction of the through holes along a direction parallel to the plane where the steel mesh is located, so that the steel mesh can be firmly fixed to the bending surface bracket.

[0078] (4) Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A steel mesh auxiliary bending device, characterized in that: include: The bending mechanism comprises a bending machine, the bending machine is used to bend a steel mesh, the steel mesh has a horizontal portion and a portion to be bent, the steel mesh is fixed on the bending machine and the bending line of the steel mesh coincides with the bending line of the bending machine; The hoisting mechanism includes a transverse moving mechanism arranged above the bending machine and a lifting mechanism arranged on the transverse moving mechanism, the lifting mechanism is provided with a steel wire rope downward, and the free end of the steel wire rope is fixedly connected to a position of the to-be-bent portion of the steel mesh near the edge; The lifting tooling comprises a reference plane bracket, a bending plane bracket and a connecting bracket. The reference plane bracket is a horizontal plate fixed on the horizontal part of the steel mesh. The bending plane bracket is an inclined plate. The two ends of the connecting bracket are respectively fixedly connected to the bending plane bracket and the reference plane bracket, and the angle between the bending plane bracket and the reference plane bracket is the angle to be bent.

2. The steel mesh auxiliary bending device according to claim 1, characterized in that: Also includes: A control system, comprising a lateral movement control module arranged on the lateral movement mechanism, a vertical movement control module arranged on the lifting mechanism, a bending control module arranged on the bending machine, and a control chip electrically connected to the lateral movement control module, the vertical movement control module, and the bending control module respectively; The detection system comprises a tension sensor arranged on the steel wire rope, and the tension sensor is wirelessly connected to a control chip.

3. The steel mesh auxiliary bending device according to claim 1, characterized in that: The transverse moving mechanism is a gantry truck that moves horizontally along the bending direction, the lifting mechanism is a steel wire rope electric hoist arranged on the gantry truck, and the steel wire rope is led out by the steel wire rope electric hoist.

4. The steel mesh auxiliary bending device according to claim 2, characterized in that: The detection system also includes an absolute value encoder arranged on the bending machine for real-time detection of the bending angle of the bending machine, and the absolute value encoder is electrically connected to the control chip.

5. The steel mesh auxiliary bending device according to any one of claims 1 to 3, characterized in that: The steel mesh is provided with parts to be bent on both sides in the transverse direction, the bending machine is used to bend the two parts to be bent at the same time, the lifting mechanism and the lifting tool are respectively provided with one corresponding to the two parts to be bent of the steel mesh, and the free ends of the two steel wire ropes are respectively fixedly connected to the parts to be bent on the corresponding sides.

6. The method for using the steel mesh auxiliary bending device according to claim 1, characterized in that: The steps include: S1. Determine the horizontal part, the part to be bent, the corresponding bending angle α, and the bending line of the steel mesh. Place the steel mesh horizontally on the bending machine. Clamp the steel mesh on the bending machine after the bending line of the steel mesh coincides with the bending line of the bending machine. Then move the lifting mechanism so that the free end of the steel wire rope is fixedly connected to the part to be bent of the steel mesh when the wire rope is in a vertical free state. S2. Fix the reference plane bracket of the lifting tool on the horizontal part of the steel mesh so that the intersection of the straight lines where the reference plane bracket and the bending plane bracket are located on the vertical plane coincides with the bending point where the bending line is located; S3, setting the bending angle α and the bending speed ω on the bending machine, then starting the bending machine to bend the steel mesh, and at the same time starting the hoisting mechanism, controlling the horizontal moving speed of the lateral moving mechanism, and controlling the speed of the lifting mechanism to lift the wire rope, so that the wire rope provides a pulling force F to the part to be bent of the steel mesh to compensate for the gravity G of the part to be bent of the steel mesh; S4. When the steel mesh reaches the required bending angle, the portion to be bent of the steel mesh becomes the bent portion, the bent portion is fixedly connected to the bending surface bracket, the steel wire rope is removed, and then the steel mesh fixed with the lifting tooling is transferred as a whole to the installation site.

7. The method for using the steel mesh auxiliary bending device according to claim 6, characterized in that: In step S3, when the steel wire rope compensates for the gravity of the part to be bent of the steel mesh, the fixed connection point is set as the zero point of the lifting mechanism, and the position of the free end of the steel wire rope after the steel mesh is bent is determined as the lifting point according to the distance R between the zero point of the lifting mechanism and the bending point and the angle to be bent. The movement total velocity V=ω·R of the fixed connection point from the zero point of the lifting mechanism to the lifting point, and the movement total velocity V is divided into the horizontal movement velocity V1=ω·R·sin(ω·t) of the lateral movement mechanism and the vertical movement velocity V2=ω·R·cos(ω·t) of the free end of the steel wire rope. The distance between the free end of the steel wire rope and the center of gravity of the part to be bent is set to D1, and the distance between the bending point and the center of gravity of the part to be bent is set to D2. Then the tension provided by the steel wire rope 8. The method for using the steel mesh auxiliary bending device according to claim 6, characterized in that: The lateral moving mechanism and the lifting mechanism are controlled by setting a control system, a protection program is set in the control system and an alarm is connected. When F≥G, the control system controls the lateral moving mechanism and the lifting mechanism to stop moving and starts the alarm at the same time.

9. The method for using the steel mesh auxiliary bending device according to claim 6, characterized in that: A connecting plate or a plurality of connecting rods are arranged between the two reference plane brackets.

10. The method for using the steel mesh auxiliary bending device according to claim 6, characterized in that: The bending surface bracket is symmetrically provided with two rows of through holes on both sides of the extension direction of the bending line, each row of through holes includes a plurality of square holes evenly spaced and symmetrically distributed along the length direction of the through holes, and a fixing mechanism is correspondingly provided above each row of through holes to fix the bending portion of the steel mesh with the bending surface bracket, and the fixing mechanism includes: A plurality of C-shaped stoppers, one of which is provided for each square hole and the opening direction is consistent with the length direction of the through hole, the C-shaped stopper can pass through the square hole in a direction perpendicular to the bending surface bracket and the distance between the upper and lower side surfaces is consistent with the sum of the thicknesses of the bending surface bracket and the to-be-bent portion of the steel mesh, and a first synchronous connecting rod is provided between all two adjacent C-shaped stoppers on the same side of the length direction of the through hole; A plurality of square rods are arranged along the extension direction of the bending line, the two ends of a square rod are correspondingly arranged in two C-shaped limiters located in the same horizontal direction, and a second synchronous connecting rod is arranged between all two adjacent square rods located on the same side of the length direction of the through hole; A pair of pushing mechanisms, which are respectively arranged at the two ends of the bending surface bracket in the extension direction of the bending line, each pushing mechanism includes a limit frame arranged along the length direction of a row of through holes on the corresponding side, the height of the limit frame is consistent with the thickness of the bending surface bracket, the two ends of all square rods extend out of the corresponding C-shaped limit pieces and enter the two limit frames and can move along the length direction of the limit frames, each limit frame is respectively provided with screw holes at the two ends in the length direction, a screw rod is arranged in each screw hole along the length direction of the limit frame, and a through hole perpendicular to the length direction of the limit frame is also arranged in the center of each limit frame; A pair of I-shaped parts, each corresponding to a pair of pushing mechanisms is provided with one, the I-shaped parts have an upper transverse part, a middle part and a lower transverse part, wherein the lower transverse part and the upper transverse part are parallel to the length direction of the limit frame, and the upper transverse part is located on the upper surface of the corresponding limit frame, and the middle part is located in the through hole of the limit frame on the corresponding side, the sum of the thickness of the limit frame, the bending surface bracket, and the part to be bent of the steel mesh is equal to the height of the middle part, and a pair of springs are symmetrically arranged on both sides of the lower half of each middle part, and a baffle with the same height as the thickness of the bending surface bracket is respectively arranged at the free ends of the pair of springs, and the maximum compression length of the pair of springs, the pair of baffles The sum of the thickness of the plate and the width of the middle portion is slightly less than or equal to the spacing between the two middlemost square rods close to the extreme position and slightly less than or equal to the width of the through hole. The width of the upper half of the middle portion is slightly less than or equal to the spacing between the two middlemost square rods close to the extreme position and slightly less than or equal to the width of the through hole. The lower horizontal portion includes a long rod, and both ends of the long rod are respectively provided with square sockets consistent with the extension direction of the square rods. A pin is provided in each square socket, and the spacing between the two pins is consistent with the spacing between any pair of symmetrically arranged square holes and the sum of the thickness of the bottom surfaces of the two C-shaped limit members.

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