Portable busbar bending machine

Abstract

The utility model discloses a portable busbar bending machine, and relates to the field of busbar machining equipment. The portable busbar bending machine comprises a bending machine main body, a fixed shaft and a clamp, the clamp comprises a baffle and a pressing plate. The baffle is arranged on the workbench through a baffle adjusting mechanism, and the baffle adjusting mechanism is mainly composed of a lower toothed plate, an upper toothed plate and a quick clamp. The distance between the clamping plane of the baffle and the plane tangent to the bending starting part of the fixed shaft can be adjusted by adjusting the meshing position of the rack structures of the upper toothed plate and the lower toothed plate. When the portable busbar bending machine is used for bending busbars with different thicknesses, the distance between the clamping plane of the baffle plate and the plane tangent to the bending starting part of the fixed shaft is adjusted, so that a gap between the busbar clamped by the clamp and the bending starting part of the fixed shaft is proper, and the phenomenon that the gap is too large to generate a bending idle stroke is prevented; and the bending error caused by the bending idle stroke is reduced, so that the bending effect of the busbar is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of busbar processing equipment, and particularly relates to a portable busbar bender. Background Art

[0002] With the rapid development of the power industry, the installation and maintenance requirements of power equipment are also increasing day by day. During the installation and maintenance of power equipment, various busbars are required as electrical connectors. In order to ensure that the assembly meets the process requirements and the insulation distance requirements between equipment, busbars such as copper bars or aluminum bars need to be bent into specific angles that meet the on-site use conditions and drilled. In addition, during the installation of the grounding grid, the grounding flat iron also needs to be bent.

[0003] At present, busbar benders can be roughly divided into three categories according to their working principles: The first category is the hydraulic busbar bender driven by hydraulic pressure. The hydraulic busbar bender usually bends the busbar more precisely in a die-closing manner. However, due to the existence of the hydraulic mechanism and the die, the hydraulic busbar bender has many problems such as large volume, high weight, long processing time, limited bending angle and radius, etc. The second category is the manual bender, which realizes the bending of the busbar by manual operation and using the lever principle; the manual bender is usually suitable for small-scale processing tasks and has the characteristics of simple structure and low manufacturing cost, but it cannot process busbars with large sizes and cannot achieve precise control of the bending angle, especially has high requirements for the strength of the operator. The third category is the electric busbar bender driven by an electric motor. At present, the vast majority of portable busbar benders adopt this driving scheme; its main working part is a moving shaft and a fixed shaft, and the motor drives the moving shaft to rotate around the fixed shaft to bend the busbar clamped and fixed by the fixture into a formed shape. However, the existing portable busbar benders often have the following problems:

[0004] 1) The diameter of its fixed shaft is not adjustable and it is also difficult to replace it with a fixed shaft of other diameters. Since the bending radius is directly determined by the outer diameter of the fixed shaft, it cannot process busbars with different bending radii.

[0005] 2) It is impossible to accurately bend busbars with different thicknesses. Since the fixture for fixing the busbar mainly consists of a fixed baffle and a movable pressing plate, the distance between the clamping plane of the baffle and the plane tangent to the starting part of the fixed-axis bending remains relatively fixed. Although this can enhance the strength of the baffle and simplify the fixture structure, in actual use, this kind of fixture cannot well adapt to busbars of various sizes because the distance between the clamping plane of the baffle and the plane tangent to the starting part of the fixed-axis bending is not adjustable. When the thickness of the busbar to be bent changes, the thicker busbar will interfere with the fixed axis, and the gap between the thinner busbar and the starting part of the fixed-axis bending is too large. This large gap will cause a bending idle stroke, resulting in the abnormal bending of the busbar, so that there is a large difference between the actual bending angle of the busbar after bending and the set bending angle, and the bending effect cannot be guaranteed, and the bending accuracy is insufficient.

[0006] 3) The bending angle cannot be finely adjusted. Since most of the existing portable busbar bending machines use chain mechanisms or gear mechanisms for transmission to achieve a large transmission ratio and thus obtain a large torque to bend the busbar, and there are two ways to adjust the angle. One is to use a time-delay switch to control the working time of the motor, and the other is to use a limiter to limit the movement range of the gear or chain. However, in actual operation, due to the different bending resistance properties of different materials, and at the same time, the bending resistance properties of materials with different thicknesses and widths are also different, so the above two methods cannot well control the angle error, and thus cannot achieve fine adjustment of the bending angle. According to experimental tests, when the existing portable busbar bending machine bends the busbar, when the bending angle is set to 90°, the actual bending angles obtained by bending a 60×6 mm copper bar and an 80×6 mm copper bar are 96.5° and 91° respectively; when bending 60×6 mm copper bars, aluminum bars, and flat irons, the actual bending angles obtained are 96.5°, 107.5°, and 94° respectively. In addition, due to the springback characteristics of the metal material, the bent busbar will spring back a certain angle, resulting in the actual bending angle being slightly lower than the set bending angle, which further increases the difficulty of accurately controlling the bending angle of the busbar.

[0007] Therefore, there is an urgent need in the field for a portable busbar bending machine that is convenient for bending busbars at the substation installation and maintenance sites to solve the above technical problems. Summary of the Utility Model

[0008] The present utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the present utility model provides a portable busbar bending machine, in which the distance between the clamping plane of the baffle and the plane tangent to the starting part of the fixed-axis bending is adjustable.

[0009] The technical solution adopted by the utility model to solve the technical problem is as follows: a portable busbar bending machine comprises a bending machine body, a fixed axis and a clamp;

[0010] A workbench is provided on the top of the bending machine body;

[0011] The fixed axis is arranged on a workbench, and a fixed axis bending starting portion is provided on its side, and a plane tangent to the fixed axis bending starting portion is a first plane;

[0012] The fixture includes a baffle and a pressure plate; the baffle is arranged on the workbench, and its clamping plane corresponds to the first plane; the pressure plate is arranged on the workbench through a pressure plate adjustment mechanism, and its clamping plane corresponds to the clamping plane of the baffle;

[0013] The pressure plate adjustment mechanism can adjust a first distance to form a clamping position between the clamping planes of the baffle and the pressure plate for clamping and fixing the busbar to be bent; the first distance is the distance between the pressure plate and the baffle;

[0014] The baffle is arranged on the workbench through a baffle adjustment mechanism, and the baffle adjustment mechanism includes a lower tooth plate, an upper tooth plate and a quick clamp;

[0015] The lower tooth plate is arranged on the workbench, with its rack structure facing upward and distributed along the clamping plane of the baffle;

[0016] The upper tooth plate is arranged on the lower tooth plate and meshes with the rack structure of the lower tooth plate through its rack structure;

[0017] The baffle is arranged on the upper tooth plate; by adjusting the meshing position of the rack structure between the upper tooth plate and the lower tooth plate, the second distance can be adjusted, and the second distance is the distance between the clamping plane of the baffle and the first plane;

[0018] The quick clamp is arranged on a workbench and is used for applying a downward clamping force to the upper tooth plate so that the upper tooth plate is pressed against the lower tooth plate to fix the baffle.

[0019] Furthermore, the pressure plate adjustment mechanism includes a pressure plate seat, a screw and a knob;

[0020] The pressing plate seat is arranged on the workbench;

[0021] The screw is arranged along the direction of the clamping plane of the pressure plate and is threadedly connected to the pressure plate seat;

[0022] The knob is arranged at an end of the screw away from the baffle;

[0023] The pressing plate is arranged at one end of the screw rod close to the baffle.

[0024] Furthermore, the quick clamp includes a clamp base, a clamping arm, a connecting rod and a handle;

[0025] The clamp base is arranged on the workbench;

[0026] The pressing arm is arranged on the clamp base in a swingable manner up and down. One end of the pressing arm is hinged to the clamp base through a third hinge shaft, and the other end thereof extends downward to form a pressing portion, and the pressing portion is located on the upper side of the upper toothed plate;

[0027] The handle is arranged on the clamp base in a swingable manner back and forth. The lower end of the handle is hinged to the clamp base through a fourth hinge shaft;

[0028] One end of the connecting rod is hinged to the pressing arm through a first hinge shaft, and the other end of the connecting rod is hinged to the handle through a second hinge shaft;

[0029] The handle can drive the pressing arm to swing downward through the connecting rod, so that the quick clamp is in the dead point position, and the upper toothed plate is pressed downward by the pressing portion.

[0030] Further, the portable busbar bending machine further includes a moving shaft and a moving shaft driving mechanism;

[0031] The moving shaft is movably arranged on the workbench, and a bending gap is formed between the moving shaft and the fixed shaft;

[0032] The moving shaft driving mechanism is arranged on the bending machine main body and is in transmission connection with the moving shaft, and can drive the moving shaft to rotate around the fixed shaft.

[0033] Further, the bending machine main body includes a bending machine housing;

[0034] An arc-shaped guide groove is formed on the workbench, and the center of the arc-shaped guide groove is located on the axis of the fixed shaft;

[0035] The moving shaft driving mechanism is arranged in the bending machine housing, and includes a turntable, a driven sprocket, a motor, a driving sprocket and a chain;

[0036] The turntable is rotatably arranged with the axis of the fixed shaft as the rotation center line. An eccentric shaft corresponding to the arc-shaped guide groove is arranged on the turntable, and the eccentric shaft is connected with the moving shaft;

[0037] The driven sprocket is in transmission connection with the turntable;

[0038] The driving sprocket is in transmission connection with the power output end of the motor;

[0039] The chain is respectively engaged with the driving sprocket and the driven sprocket to transmit power.

[0040] Further, the moving shaft includes a moving shaft core and a moving shaft sleeve;

[0041] The moving shaft core passes through the arc-shaped guide groove and is coaxially connected with the eccentric shaft;

[0042] The movable shaft sleeves are at least two in number and have different outer diameters;

[0043] When the portable busbar bending machine is in use, one of the movable shaft sleeves is sleeved on the movable shaft core, or at least two movable shaft sleeves nested together as a whole are sleeved on the movable shaft core, and the second plane is coplanar with the clamping plane of the baffle; the second plane is the plane tangent to the starting part of the movable shaft bending; the starting part of the movable shaft bending is the part on the movable shaft sleeve sleeved on the movable shaft core when it is in the initial position and used to abut against the busbar to apply the bending force.

[0044] Furthermore, the portable busbar bending machine further includes a fixed shaft seat and fixed shaft replacement parts;

[0045] The fixed shaft seat is arranged inside the bending machine housing and has a fixed shaft groove with a notch on the tabletop of the workbench;

[0046] The fixed shaft is detachably connected to the fixed shaft groove;

[0047] The fixed shaft replacement parts are at least two in number and have different outer diameters; the lower end of the fixed shaft replacement part is provided with a connecting part matching the fixed shaft groove;

[0048] The fixed shaft replacement parts are used to replace the fixed shaft to adjust the bending radius of the bent busbar.

[0049] Furthermore, the portable busbar bending machine further includes a control system, and the control system includes a controller, a touch display, a first sensor and a second sensor;

[0050] The controller is arranged on the bending machine main body and is communicatively connected with the motor;

[0051] The touch display is arranged on the front of the bending machine main body and is communicatively connected with the controller. The touch display is used to input control instructions and display graphic and text information;

[0052] The first sensor is communicatively connected with the controller and is used to detect the movement angle of the movable shaft;

[0053] The second sensor is communicatively connected with the controller and is used to detect the resilience moment of the busbar.

[0054] Furthermore, the controller is arranged on the front of the bending machine main body, and a main switch and an emergency stop switch are arranged thereon;

[0055] The driven sprocket is rotatably arranged through a bearing;

[0056] The first sensor is a Hall magnetic sensor arranged on the bearing;

[0057] The second sensor is a torque sensor arranged on the motor.

[0058] Furthermore, the main body of the bending machine, the fixed shaft, the fixture, the moving shaft and the moving shaft driving mechanism are all made of aluminum alloy material;

[0059] The main body of the bending machine is cuboid-shaped, and four universal wheels with brakes are arranged at its bottom, and the four universal wheels are distributed in a rectangular array.

[0060] The beneficial effects of the present utility model are as follows: The portable busbar bending machine installs the baffle through the baffle adjusting mechanism. Since the baffle adjusting mechanism mainly consists of a lower toothed plate arranged on the workbench, an upper toothed plate meshed with the lower toothed plate, and a quick clamp capable of applying a downward clamping force to the upper toothed plate, and since the rack structure of the lower toothed plate is distributed along the orientation of the clamping plane of the baffle, and the baffle is arranged on the upper toothed plate, therefore, by adjusting the meshing position of the rack structures of the upper toothed plate and the lower toothed plate with each other, the distance between the clamping plane of the baffle and the plane tangent to the starting part of the fixed shaft bending can be adjusted, and after adjusting the distance, the upper toothed plate can be pressed tightly on the lower toothed plate by the quick clamp, so that the position of the baffle is fixed. It can be seen that the distance between the clamping plane of the baffle of the portable busbar bending machine and the plane tangent to the starting part of the fixed shaft bending is adjustable, and it can well adapt to busbars of various thicknesses. When bending busbars of different thicknesses, by adjusting the position of the baffle, the gap between the busbar clamped by the fixture and the starting part of the fixed shaft bending can be made appropriate, preventing the generation of bending idle stroke due to too large a gap, reducing the bending error caused by the bending idle stroke, ensuring the bending effect of the busbar, and facilitating the relatively precise bending of busbars of different thicknesses. In addition, the upper toothed plate can be quickly and conveniently pressed and fixed on the lower toothed plate by the quick clamp to effectively fix the baffle at the current position and prevent it from moving during use.

[0061] The technical effects brought by or directly generated by other technical features of the present utility model will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0062] Figure 1 is the front three-dimensional structural schematic diagram of the present utility model;

[0063] Figure 2 is the rear three-dimensional structural schematic diagram of the present utility model;

[0064] Figure 3 is the top view of the present utility model;

[0065] Figure 4 is the state schematic diagram of replacing the moving shaft and the fixed shaft of the present utility model;

[0066] Figure 5 is the internal structural schematic diagram of the present utility model;

[0067] Figure 6 is a cross-sectional view of the quick clamp in the present utility model;

[0068] Figure 7 is a control flow chart of an implementation manner of the present utility model;

[0069] The labels in the figure are: 1 - moving shaft, 2 - fixed shaft, 3 - workbench, 4 - universal wheel, 5 - main switch, 6 - emergency stop switch, 7 - touch display, 8 - controller, 9 - bending machine main body, 10 - knob, 11 - screw rod, 12 - pressing plate, 13 - lifting block, 14 - pressing plate seat, 15 - baffle, 16 - lower toothed plate, 17 - upper toothed plate, 18 - quick clamp, 19 - moving shaft sleeve, 20 - moving shaft core, 21 - fixed shaft replacement part, 22 - fixed shaft seat, 23 - turntable, 24 - first sensor, 25 - driven sprocket, 26 - bearing, 27 - chain, 28 - driving sprocket, 29 - motor, 30 - clamp base, 31 - pressing arm, 32 - connecting rod, 33 - handle, 34 - first hinge shaft, 35 - second hinge shaft, 36 - third hinge shaft, 37 - fourth hinge shaft. Specific implementation manner

[0070] The present utility model will be further described below with reference to the accompanying drawings. The same reference numerals in the drawings denote components with the same or similar functions. Although various aspects of the implementation manner are shown in the drawings, unless otherwise specified, the drawings do not have to be drawn to scale.

[0071] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position and dimensional relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0072] The term "transmission connection" refers to: a connection method used to transmit power or motion in a mechanical system, for example: a connection method achieved through transmission mechanisms such as couplings, reducers, gear assemblies, worm and worm gear assemblies, etc. The term "rotatably arranged" refers to a connection method between two parts, enabling one part to rotate relative to the other part; this connection method is usually achieved using mechanical components such as bearings, bushings, shaft-hole fits, hinges, universal joints, etc. When the term "multiple" indicates quantity, it usually means three or more, for example: "multiple" usually means three or more. The expression "mainly composed of... or constituted by..." is interpreted as it may also contain structural components not mentioned in this sentence. The term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships, for example: A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The term "communication connection" refers to the establishment of communication between connected devices through signal transmission and interaction, which can be divided into wired connections and wireless connections; wired connections are usually cables, optical fibers, etc.; wireless connections are usually radio communications, Bluetooth, infrared, NFC, etc. In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0073] Combined Figure 1 、 Figure 2 and Figure 3 As shown, the portable bus bar bending machine includes a bending machine main body 9, a fixed shaft 2, and a fixture;

[0074] A workbench 3 is provided at the top of the bending machine main body 9;

[0075] The fixed shaft 2 is arranged on the workbench 3, and its side has a fixed shaft bending starting part, and the plane tangent to the fixed shaft bending starting part is the first plane; the fixed shaft 2 is used to support and guide the bending of the bus bar, and the fixed shaft bending starting part is the starting position for the fixed shaft 2 to support and guide the bending of the bus bar;

[0076] The fixture includes a baffle 15 and a pressing plate 12; the baffle 15 is arranged on the workbench 3, and its clamping plane corresponds to the first plane; the pressing plate 12 is arranged on the workbench 3 through a pressing plate adjusting mechanism, and its clamping plane corresponds to the clamping plane of the baffle 15; the pressing plate 12 is used to press and fix the bus bar on the baffle 15 to prevent the bus bar from sliding or breaking during the bending process and reduce the risk of injury to the operator;

[0077] The pressing plate adjusting mechanism can adjust the first distance to form a clamping position between the clamping planes of the baffle 15 and the pressing plate 12 for clamping and fixing the bus bar to be bent; the first distance is the distance between the pressing plate 12 and the baffle 15; the pressing plate adjusting mechanism can be various, for example: an electric push rod mechanism, a lever adjusting mechanism, a screw adjusting mechanism, etc.;

[0078] The baffle 15 is arranged on the workbench 3 through a baffle adjusting mechanism. The baffle adjusting mechanism includes a lower toothed plate 16, an upper toothed plate 17 and a quick clamp 18;

[0079] The lower toothed plate 16 is arranged on the workbench 3, and its rack structure faces upward and is distributed along the orientation of the clamping plane of the baffle 15; the orientation of the clamping plane refers to the direction faced or pointed by the clamping plane;

[0080] The upper toothed plate 17 is arranged on the lower toothed plate 16 and meshes with the rack structure of the lower toothed plate 16 through its rack structure;

[0081] The baffle 15 is arranged on the upper toothed plate 17; by adjusting the meshing position of the rack structures of the upper toothed plate 17 and the lower toothed plate 16 with each other, the second distance can be adjusted. The second distance is the distance between the clamping plane of the baffle 15 and the first plane;

[0082] The mating connection of the upper toothed plate 17 and the lower toothed plate 16 is realized by means of rack meshing, realizing the stepwise adjustment of the second distance; the pitch of the rack structures of the upper toothed plate 17 and the lower toothed plate 16 with each other determines the minimum size of the single adjustment of the second distance. Therefore, the pitch is generally determined according to the thickness differences between multiple busbars to be bent to ensure good distance adjustment effect;

[0083] The quick clamp 18 is arranged on the workbench 3 and is used to apply a downward clamping force to the upper toothed plate 17 so that the upper toothed plate 17 presses tightly on the lower toothed plate 16 to fix the baffle 15; the quick clamp 18 is an existing clamping tool that can accurately position and quickly clamp; it mainly uses the lever principle to make the clamping arm reach the dead point position and uses the dead point clamping principle to press the upper toothed plate 17 downward tightly.

[0084] This portable busbar bender can well adapt to busbars of various thicknesses. When bending busbars of different thicknesses, by adjusting the second distance, the gap between the busbar clamped and fixed by the fixture and the starting part of the fixed-axis bending can be made appropriate, preventing the occurrence of a bending idle stroke due to too large a gap, reducing the bending error caused by the bending idle stroke, and thus ensuring the bending effect of the busbar. In addition, the upper toothed plate 17 can be quickly and conveniently pressed tightly on the lower toothed plate 16 by the quick clamp 18, and the clamping force is relatively large. Even when the baffle 15 bears a large acting force during the bending process of the busbar, it can effectively fix the baffle 15 in the current position and prevent it from moving during use. It can be seen that this portable busbar bender can not only quickly adjust the second distance, but also ensure the strength of the baffle 15 and the stability during use.

[0085] Another example Figure 2 and Figure 3As shown, in some embodiments of the present utility model, the pressing plate adjusting mechanism includes a pressing plate seat 14, a screw 11, and a knob 10; the pressing plate seat 14 is arranged on the workbench 3; the screw 11 is arranged along the orientation of the clamping plane of the pressing plate 12 and is threadedly connected with the pressing plate seat 14; the knob 10 is arranged at one end of the screw 11 away from the baffle 15; the pressing plate 12 is arranged at one end of the screw 11 close to the baffle 15. By screwing the knob 10, the screw 11 can be rotated, and then the screw 11 can be forced to drive the pressing plate 12 to move through the threaded connection structure, so as to adjust the distance between the pressing plate 12 and the baffle 15, and realize the clamping of the busbar to be bent or the release of the bent busbar.

[0086] During the bending process of the busbar, in order to resist bending, the bending end of the busbar will generate a force in the same direction as the orientation of the pressing plate 12 to press the fixed end of the busbar against the baffle 15. Therefore, the pressing plate 12 does not require too much pressure. Therefore, the screw adjusting mechanism is used as the pressing plate adjusting mechanism to realize the adjustment of the first distance and the pressing and relaxation of the pressing plate 12, which can not only ensure a certain pressing force, but also simplify the structure and ensure the convenience of operation.

[0087] Among them, the pressing plate seat 14 is the carrier component of the pressing plate adjusting mechanism, mainly used for the installation and support of other components of the pressing plate adjusting mechanism; the pressing plate seat 14 can have various structures, and is preferably in an L-shaped structure. The knob 10 is mainly used for the operator to hold and screw for adjustment, and usually has an anti-slip structure or a structure convenient for holding.

[0088] Considering that when bending busbars of different widths, it is necessary to press the pressing plate 12 at the center position of the busbar as much as possible, and the height of the pressing plate 12 needs to be adjusted within a certain height range. Therefore, as shown in Figure 3 In some embodiments of the present utility model, a lifting block 13 that can slide up and down and be locked and fixed is arranged on the pressing plate seat 14, and a threaded hole is provided on the lifting block 13; the screw 11 is in fit connection with the threaded hole on the lifting block 13. By sliding the lifting block 13 up and down, the height positions of the screw 11 and the pressing plate 12 can be changed, and then the clamping effect on the busbar can be adjusted, so as to facilitate the effective clamping of busbars of different width dimensions. The lifting block 13 can generally be slidably connected with the pressing plate seat 14 through structures such as slide rails and chutes, and can be locked and fixed through a buckle structure, a locking component, a reaction force, etc. after adjusting the up and down positions.

[0089] In some embodiments of the present utility model, the lifting block 13 is a floating structure, which has an anti-pressing part, and the anti-pressing part is on the side of the pressing plate seat 14 close to the pressing plate 12. In this way, when the pressing plate 12 is pressed against the busbar by adjusting the screw 11, the lifting block 13 can move in a direction away from the pressing plate 12 relative to the screw 11, so that the anti-pressing part presses the pressing plate seat 14 to form a lock and fix the height position of the pressing plate 12.

[0090] Combine Figure 2 and Figure 6 As shown, in some embodiments of the present invention, the quick clamp 18 includes a clamp base 30, a clamping arm 31, a connecting rod 32 and a handle 33; the clamp base 30 is arranged on the workbench 3; the clamping arm 31 can be swung up and down on the clamp base 30, one end of which is hinged to the clamp base 30 through a third hinge shaft 36, and the other end of which extends downward to form a clamping portion, which is on the upper side of the upper tooth plate 17; the handle 33 can be swung back and forth on the clamp base 30, and the lower end of which is hinged to the clamp base 30 through a fourth hinge shaft 37; one end of the connecting rod 32 is hinged to the clamp arm 31 through a first hinge shaft 34, and the other end of the connecting rod 32 is hinged to the handle 33 through a second hinge shaft 35; the handle 33 can drive the clamping arm 31 to swing downward through the connecting rod 32, so that the quick clamp 18 is in a dead point position, and the upper tooth plate 17 is pressed downward by the clamping portion.

[0091] The quick clamp 18 has a simple structure and is easy to operate, allowing it to quickly clamp the upper toothed plate 17 against the lower toothed plate 16. When the quick clamp 18 is in the dead center position, the center points of the first hinge 34, the second hinge 35, and the fourth hinge 37 are aligned, or the center point of the first hinge 34 is slightly inward of the line connecting the center points of the second hinge 35 and the fourth hinge 37. At this time, the clamping arm 31 cannot automatically return to its original position, thereby maintaining the clamping state on the upper toothed plate 17 in a stable and reliable manner. A clamping plate is typically provided at the lower end of the clamping portion to increase the contact surface area of the clamping portion against the upper toothed plate 17, thereby improving the clamping effect and preventing damage to the upper toothed plate 17.

[0092] Specific, combined Figure 1 、 Figure 3 and Figure 5 As shown, the portable busbar bending machine also includes a moving shaft 1 and a moving shaft driving mechanism; the moving shaft 1 is movably arranged on the workbench 3, and a bending gap is formed between it and the fixed shaft 2; the moving shaft driving mechanism is arranged on the bending machine body 9 and is transmission-connected to the moving shaft 1, which can drive the moving shaft 1 to rotate around the fixed shaft 2. When in use, the busbar to be bent is clamped and fixed on the fixture so that the part to be bent is in the bending gap. In the process of the moving shaft driving mechanism driving the moving shaft 1 to rotate around the fixed shaft 2, the moving shaft 1 continuously pushes the part of the busbar to be bent toward the fixed shaft 2. Under the support and guiding action of the fixed shaft 2, the busbar is bent into the required curved structure. Among them, the moving shaft driving mechanism can be of various types, such as: a cam driving mechanism, a rocker driving mechanism, a telescopic driving mechanism, etc.

[0093] For example Figure 5As shown, in some embodiments of the present utility model, the bending machine main body 9 includes a bending machine housing; an arc-shaped guide groove is provided on the workbench 3, and the center of the arc-shaped guide groove is located on the axis of the fixed shaft 2; the moving shaft driving mechanism is arranged inside the bending machine housing and includes a turntable 23, a driven sprocket 25, a motor 29, a driving sprocket 28 and a chain 27; the turntable 23 is rotatably arranged with the axis of the fixed shaft 2 as the rotation center line, and an eccentric shaft corresponding to the arc-shaped guide groove is arranged on the turntable 23, and the eccentric shaft is connected to the moving shaft 1; the driven sprocket 25 is in transmission connection with the turntable 23; the driving sprocket 28 is in transmission connection with the power output end of the motor 29; the chain 27 is respectively engaged with the driving sprocket 28 and the driven sprocket 25 to transmit power.

[0094] Among them, the arc-shaped guide groove is used to guide and limit the movable range of the moving shaft 1, and its radian is usually 1 / 4π to π. The motor 29 is the power source of the portable busbar bending machine and is used to convert electrical energy into mechanical energy to bend the busbar; the torque of the motor 29 during operation directly reflects the pressure exerted by the moving shaft 1 on the busbar, and is also equivalent to the resilience of the busbar against bending; through experimental tests, the springback angles of busbars with different thicknesses and materials under different torques can be obtained, and then the springback of the busbar can be detected by measuring the torque, which is beneficial to controlling the motor 29 for springback compensation. Using a chain mechanism to transmit the power of the motor 29 to the turntable 23 not only has high stability and reliability, but also can transmit a large torque, which is beneficial to bending busbars with larger sizes and higher bending resistance. The driven sprocket 25 is usually designed as a ring and is rotatably arranged through a bearing 26.

[0095] In some embodiments of the present utility model, the diameter of the driven sprocket 25 is larger than that of the driving sprocket 28 to achieve a larger transmission ratio, increase the torque of the moving shaft 1 and reduce its speed.

[0096] Combined Figure 1 、 Figure 3 and Figure 4As shown, in some embodiments of the present invention, the dynamic shaft 1 includes a dynamic shaft core 20 and a dynamic shaft sleeve 19; the dynamic shaft core 20 is arranged through an arc-shaped guide groove and is coaxially connected to the eccentric shaft; there are at least two dynamic shaft sleeves 19, and the outer diameters are different; when the portable busbar bending machine is used, one of the dynamic shaft sleeves 19 is sleeved on the dynamic shaft core 20, or at least two dynamic shaft sleeves 19 that are nested into one another are sleeved on the dynamic shaft core 20, and the second plane is coplanar with the clamping plane of the baffle 15; the second plane is a plane tangent to the starting part of the dynamic shaft bending; the starting part of the dynamic shaft bending is the part on which the dynamic shaft sleeve 19 sleeved on the dynamic shaft core 20 is in the initial position and is used to apply the bending force against the busbar. Dynamic shaft sleeves 19 of different outer diameters can be replaced to form dynamic shafts 1 of different outer diameters, and are adapted to the baffle 15 after adjusting the second distance, so as to avoid reducing the bending effect due to the difference between the second plane and the clamping plane of the baffle 15. The movable shaft sleeves 19 can be composed of multiple independent parts or nested components. The movable shaft sleeve 19 with the smallest outer diameter is designed to be able to bend the busbar with the largest thickness. When multiple movable shaft sleeves 19 are nested together, they can be connected together through end caps and locked with screws to form movable shafts 1 with different radii, meeting the requirements of high-precision bending of busbars of varying thicknesses.

[0097] In some embodiments of the present invention, one or more sets of bearings are usually provided in the movable shaft sleeve 19 for rotating with the movable shaft core 20, so that the movable shaft sleeve 19 can rotate freely and rub against it statically during the bending process of the busbar to protect itself and the busbar from excessive wear.

[0098] Combine Figure 4 and Figure 5 As shown, in some embodiments of the present invention, the portable busbar bending machine further includes a fixed shaft seat 22 and a fixed shaft replacement part 21; the fixed shaft seat 22 is arranged in the bending machine casing and has a fixed shaft groove with a notch on the table surface of the workbench 3; the fixed shaft 2 is detachably connected to the fixed shaft groove; there are at least two fixed shaft replacement parts 21, and the outer diameters are different; the lower end of the fixed shaft replacement part 21 is provided with a connecting portion that matches the fixed shaft groove; the fixed shaft replacement part 21 is used to replace the fixed shaft 2 to adjust the bending radius of the bending busbar. The fixed shaft seat 22 facilitates the installation and replacement of the fixed shaft 2 and the fixed shaft replacement part 21; since the bending radius of the busbar is determined by the outer diameter of the fixed shaft 2, by replacing the fixed shaft replacement parts 21 with different outer diameters, the processing of busbars with different bending radii can be achieved, further improving the applicability of the portable busbar bending machine. The fixed shaft groove can be of various structures, such as: square groove, rectangular groove, hexagonal groove, etc. The connection portion between the fixed shaft 2 and the fixed shaft replacement part 21 is usually processed into a structure that matches the fixed shaft groove, but with a slightly smaller size to facilitate disassembly and assembly.

[0099] Combine Figure 1 andFigure 5 As shown, in some embodiments of the present utility model, the portable busbar bender further includes a control system, and the control system includes a controller 8, a touch display 7, a first sensor 24 and a second sensor;

[0100] The controller 8 is arranged on the bender main body 9 and is communicatively connected with the motor 29; the controller 8 is mainly used for receiving and processing control instructions, signals of each sensor, etc., and controlling the portable busbar bender, for example: controlling the rotation speed, output torque, etc. of the motor 29 to control the angle of the moving shaft 2 for bending the busbar; there can be multiple types of controllers, and preferably a PLC controller;

[0101] The touch display 7 is arranged on the front surface of the bender main body 9 and is communicatively connected with the controller 8, and the touch display 7 is used for inputting control instructions and for displaying graphic and text information; the touch display 7 is a medium for the operator to interact with the portable busbar bender, which can facilitate operation and use. The operator only needs to click the icons or texts displayed on the touch display 7 with a finger and / or a stylus to control the portable busbar bender;

[0102] The first sensor 24 is communicatively connected with the controller 8 and is used for detecting the movement angle of the moving shaft 1; since the angle change of the busbar during the bending process is directly related to the movement angle of the moving shaft 1, the bending angle of the busbar can be directly and accurately determined by detecting the rotation angle of the moving shaft 1;

[0103] The second sensor is communicatively connected with the controller 8 and is used for detecting the resilience torque of the busbar.

[0104] Among them, the controller 8 can receive information such as the material, thickness, width, angle, etc. of the busbar input by the operator, the motor torque information fed back by the second sensor, and the movement angle information of the moving shaft fed back by the first sensor; and can control the start and stop of the motor 29 according to the above information.

[0105] Specifically, one function that the above-mentioned portable busbar bender can achieve is: First, according to the bending experiment data of busbars of different materials and different sizes, fit the relationship curves between the resilience torque and the resilience angle at each bending angle of busbars of different materials and different sizes, and store them in the controller 8. During operation, the controller 8 selects the corresponding relationship curve for initial control according to the information input by the operator, then calculates the resilience angle and the resilience torque according to the data fed back by each sensor during the bending process, and then controls the motor 29 to perform resilience compensation until the difference between the bending angle and the resilience angle is equal to the target angle, and then stops.

[0106] In some embodiments of the present utility model, the portable busbar bender further includes a storage battery disposed inside the bender housing for supplying electrical energy to electrical components such as the motor 29 and the controller 8.

[0107] Again Figure 1 As shown, in some embodiments of the present utility model, the controller 8 is disposed on the front surface of the bender main body 9, and is provided with a main switch 5 and an emergency stop switch 6 thereon; the main switch 5 is used to control the start and stop of the entire portable busbar bender; the emergency stop switch 6 is used to control the emergency braking of the portable busbar bender to protect the operator.

[0108] In some embodiments of the present utility model, the driven sprocket 25 is rotatably disposed through a bearing 26; the first sensor 24 is a Hall magnetic sensor disposed on the bearing 26; the second sensor is a torque sensor disposed on the motor 29. Since the movement angle of the moving shaft 1 is consistent with the rotation angle of the driven sprocket 25, the movement angle of the moving shaft 1 can be measured by detecting the rotation angle of the driven sprocket 25, that is, the angle at which the moving shaft 1 drives the busbar to bend; and since the driven sprocket 25 is rotatably disposed through a bearing 26, the Hall magnetic sensor disposed on the bearing 26 can realize real-time monitoring of the bending angle. Since during the bending process of the busbar, the torque of the motor 29 is directly related to the return spring torque of the busbar, and the return spring force of the busbar is related to the springback amount, the detection of the torque of the motor 29 by the torque sensor can realize the detection of the return spring torque of the busbar during the bending process, and thus facilitate the controller 8 to control the power output of the motor 29 to compensate for and suppress the springback amount of the busbar. It can be seen that the portable busbar bender adopts a Hall magnetic sensor and a torque sensor to realize the detection of the busbar bending angle and the return spring torque, and can be controlled by the controller 8, which is beneficial to realizing precise bending of busbars of different sizes made of materials such as copper, steel, and aluminum, and is also beneficial to improving the efficiency of substation installation and maintenance.

[0109] Combined with Figure 7 As shown, the control flow of an embodiment of the portable busbar bender provided by the present utility model is as follows:

[0110] S101: Turn on the power and boot up.

[0111] S102: The user (abbreviation for the operator, the same below) selects a moving shaft 1 and a fixed shaft 2 with appropriate outer diameters for matching use according to the thickness of the busbar to be bent, and installs them on the portable busbar bender.

[0112] S103: The user adjusts the baffle 15 of the fixture to an appropriate position according to the thickness of the busbar to be bent to adjust the second distance, and at the same time presses the busbar tightly with the pressing plate 12 in cooperation with the baffle 15.

[0113] S104: The user inputs the material, thickness, width, and target bending angle of the busbar on the touch display 7.

[0114] S105: The user presses the start key, and the controller 8 controls the motor 29 to start. The motor 29 drives the moving shaft 1 to work through the transmission mechanism to bend the busbar.

[0115] S106: During the bending process, the controller 8 continuously receives information from the Hall sensor. When the set angle is not reached, the motor 29 continues to work. After reaching the set angle, the next step is carried out.

[0116] S107: The motor 29 continues to work and enters the next determination.

[0117] S108: The controller 8 begins to combine the information input in step S104 and the information detected by the torque sensor and the Hall sensor, and calculates the expected springback angle at the current torque. When the expected springback angle is the same as the currently exceeded preset angle, it enters S109; if not, it returns to step S107 to continue compensation.

[0118] S108: The motor 29 stops, and the bending operation is completed.

[0119] Again Figure 1 As shown, in some embodiments of the present invention, the bending machine main body 9, the fixed shaft 2, the fixture, the moving shaft 1, and the moving shaft driving mechanism are all made of aluminum alloy material; the bending machine main body 9 is in a cuboid shape, and four universal wheels 4 with brakes are arranged at its bottom, and the four universal wheels 4 are arranged in a rectangular array. The main components of this portable busbar bending machine are all made of aluminum alloy material, which can make it lightweight, and thus achieve the purpose of improving its portability. The cuboid-shaped bending machine main body 9 is convenient for the loading, placement, and transportation of this portable busbar bending machine, so as to further improve its portability. Through the universal wheels 4, this portable busbar bending machine can move in all directions on the ground and be locked by the brakes of the universal wheels 4 after arriving, further improving the portability, which is very conducive to use at the substation installation and maintenance sites. The four universal wheels 4 are arranged in a rectangular array, which improves the stability of the support for this portable busbar bending machine and facilitates its movement and use.

[0120] This article only presents the description of various embodiments of the present invention for the purpose of illustration, and does not aim to present in detail or be limited to the disclosed embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and variations will be obvious to those skilled in the art. Compared with the technologies found in the market, the terms used in this article are selected to best explain the principles of the embodiments, practical applications, or technological progress, or to enable other technicians in the art to understand the embodiments disclosed in this article.

[0121] It should be understood that, for the sake of clarity, certain features of the present utility model described in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, for the sake of brevity, the various features of the present utility model described in the context of a single embodiment may also be provided separately or in any suitable sub-combination, or provided in any other described embodiment of the present utility model where appropriate. Certain features described in the context of various embodiments are not considered essential features of those embodiments unless the embodiments do not work without those features.

Claims

1. Portable busbar bender, comprising a bender main body (9), a fixed shaft (2) and a fixture; A workbench (3) is provided on the top of the bender main body (9); The fixed shaft (2) is arranged on the workbench (3), and its side has a fixed shaft bending starting part, and the plane tangent to the fixed shaft bending starting part is the first plane; The fixture includes a baffle (15) and a pressing plate (12); the baffle (15) is arranged on the workbench (3), and its clamping plane corresponds to the first plane; the pressing plate (12) is arranged on the workbench (3) through a pressing plate adjusting mechanism, and its clamping plane corresponds to the clamping plane of the baffle (15); The pressing plate adjusting mechanism can adjust the first distance to form a clamping position between the clamping planes of the baffle (15) and the pressing plate (12) for clamping and fixing the busbar to be bent; the first distance is the distance between the pressing plate (12) and the baffle (15); It is characterized in that: The baffle (15) is arranged on the workbench (3) through a baffle adjusting mechanism, and the baffle adjusting mechanism includes a lower toothed plate (16), an upper toothed plate (17) and a quick clamp (18); The lower toothed plate (16) is arranged on the workbench (3), and its rack structure faces upward and is distributed along the orientation of the clamping plane of the baffle (15); The upper toothed plate (17) is arranged on the lower toothed plate (16) and meshes with the rack structure of the lower toothed plate (16) through its rack structure; The baffle (15) is arranged on the upper toothed plate (17); by adjusting the meshing position of the rack structures of the upper toothed plate (17) and the lower toothed plate (16) with each other, the second distance can be adjusted, and the second distance is the distance between the clamping plane of the baffle (15) and the first plane; The quick clamp (18) is arranged on the workbench (3) for applying a downward clamping force to the upper toothed plate (17) so that the upper toothed plate (17) presses on the lower toothed plate 16 to fix the baffle (15).

2. The portable busbar bending machine according to claim 1, wherein: The pressing plate adjusting mechanism includes a pressing plate seat (14), a screw (11) and a knob (10); The pressing plate seat (14) is arranged on the workbench (3); The screw (11) is arranged along the orientation of the clamping plane of the pressing plate (12) and is threadedly connected to the pressing plate seat (14); The knob (10) is arranged at one end of the screw (11) away from the baffle (15); The pressing plate (12) is arranged at one end of the screw (11) close to the baffle (15).

3. The portable busbar bender according to claim 1, wherein: The quick clamp (18) includes a clamp base (30), a pressing arm (31), a connecting rod (32) and a handle (33); The clamp base (30) is arranged on the workbench (3); The pressing arm (31) is swingably arranged on the clamp base (30), one end of which is hinged to the clamp base (30) through a third hinge shaft (36), and the other end extends downward to form a pressing part, and the pressing part is located above the upper toothed plate (17); The handle (33) is swingably arranged on the clamp base (30), and its lower end is hinged to the clamp base (30) through a fourth hinge shaft (37); One end of the connecting rod (32) is hinged to the pressing arm (31) through a first hinge shaft (34), and the other end of the connecting rod (32) is hinged to the handle (33) through a second hinge shaft (35); The handle (33) can drive the pressing arm (31) to swing downward through the connecting rod (32), so that the quick clamp (18) is in the dead point position, and the upper tooth plate (17) is pressed downward by the pressing part.

4. The portable busbar bender according to any one of claims 1 to 3, characterized in that: It also includes a moving shaft (1) and a moving shaft driving mechanism; The moving shaft (1) is movably arranged on the workbench (3), and a bending gap is formed between it and the fixed shaft (2); The moving shaft driving mechanism is arranged on the bending machine main body (9) and is in transmission connection with the moving shaft (1), and it can drive the moving shaft (1) to rotate around the fixed shaft (2).

5. The portable busbar bender according to claim 4, wherein: The bending machine main body (9) includes a bending machine housing; An arc-shaped guide groove is formed on the workbench (3), and the center of the arc-shaped guide groove is on the axis of the fixed shaft (2); The moving shaft driving mechanism is arranged inside the bending machine housing, and it includes a turntable (23), a driven sprocket (25), a motor (29), a driving sprocket (28) and a chain (27); The turntable (23) is rotatably arranged with the axis of the fixed shaft (2) as the rotation center line, and an eccentric shaft corresponding to the arc-shaped guide groove is arranged on the turntable (23), and the eccentric shaft is connected to the moving shaft (1); The driven sprocket (25) is in transmission connection with the turntable (23); The driving sprocket (28) is in transmission connection with the power output end of the motor (29); The chain (27) is respectively engaged with the driving sprocket (28) and the driven sprocket (25) to transmit power.

6. The portable busbar bending machine according to claim 5, characterized in that: The moving shaft (1) includes a moving shaft core (20) and a moving shaft sleeve (19); The moving shaft core (20) passes through the arc-shaped guide groove and is coaxially connected to the eccentric shaft; There are at least two moving shaft sleeves (19), and their outer diameters are different; When the portable busbar bending machine is in use, one of the moving shaft sleeves (19) is sleeved on the moving shaft core (20), or at least two moving shaft sleeves (19) nested together as a whole are sleeved on the moving shaft core (20), and the second plane is coplanar with the clamping plane of the baffle (15); the second plane is the plane tangent to the starting part of the moving shaft bending; the starting part of the moving shaft bending is the part on the moving shaft sleeve (19) sleeved on the moving shaft core (20) when it is in the initial position and used to abut against the busbar to apply the bending force.

7. The portable busbar bender according to claim 6, characterized in that: It also includes a fixed shaft seat (22) and a fixed shaft replacement part (21); The fixed shaft seat (22) is arranged inside the bending machine housing and has a fixed shaft groove with a notch on the tabletop of the workbench (3); The fixed shaft (2) is detachably connected to the fixed shaft groove; There are at least two fixed shaft replacement parts (21), and their outer diameters are different; the lower end of the fixed shaft replacement part (21) is provided with a connecting part matching the fixed shaft groove; The fixed shaft replacement part (21) is used to replace the fixed shaft (2) to adjust the bending radius of the bent busbar.

8. The portable busbar bending machine according to claim 5, characterized in that: It also includes a control system, and the control system includes a controller (8), a touch display (7), a first sensor (24) and a second sensor; The controller (8) is arranged on the bending machine main body (9) and is communicatively connected with the motor (29); The touch display (7) is arranged on the front surface of the bending machine main body (9) and is communicatively connected with the controller (8). The touch display (7) is used for inputting control instructions and for displaying graphic and text information; The first sensor (24) is communicatively connected with the controller (8) and is used for detecting the movement angle of the moving shaft (1); The second sensor is communicatively connected with the controller (8) and is used for detecting the resilience moment of the bus bar.

9. The portable busbar bender according to claim 8, wherein: The controller (8) is arranged on the front surface of the bending machine main body (9), and a main switch (5) and an emergency stop switch (6) are arranged thereon; The driven sprocket (25) is rotatably arranged through a bearing (26); The first sensor (24) is a Hall magnetic sensor arranged on the bearing (26); The second sensor is a torque sensor arranged on the motor (29).

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