A processing tool for an overload beam of a gantry crane

Abstract

The utility model provides a kind of door machine overload beam processing frock, belong to processing frock field, it includes frock base, the lower part of frock base is provided with workbench cooperation part, the upper surface of frock base is provided with positioning arc groove, and each positioning arc groove left and right sides is provided with a width positioning jacking mechanism.The utility model has beneficial effect in that, it can be through once clamping to realize the positioning of door machine overload beam in length direction, width direction, height direction simultaneously, and cooperate with existing numerical control machining center to realize door machine overload beam one-time processing, to reduce the labor intensity of operator, stabilize product quality, improve labor productivity, ensure production period.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling, specifically relating to a machining tooling for an overloaded crossbeam of a gantry crane. Background Technology

[0002] As an important component of the gantry crane structure, the overload beam is generally located in the middle of the main tie rod of the gantry crane and adopts a welded long box structure.

[0003] like Figure 1 As shown, the existing gantry crane overload beam mainly includes the following three processing parts: 1. Pulley mounting pin hole processing part: The pulley mounting pin hole processing part is generally located at one end of the gantry crane overload beam, and it is necessary to process pulley mounting pin holes with a certain processing precision at this part, and to process rope-stop shaft mounting pin holes at the outermost edges of the two long ears set at the upper end of this part, so that the pulley can be installed through the pulley mounting pin holes, and the rope-stop shaft can be fixed through the rope-stop shaft mounting pin holes to prevent the wire rope from coming off during use; 2. Support hole processing part: The support hole processing part is generally located in the middle part of the gantry crane overload beam, and the support holes processed at the support hole processing part need to be... It has high machining precision requirements to ensure a high fit with the support shaft, thereby ensuring that the support shaft installed at this location can support the entire crossbeam; at the same time, in order to ensure that the gantry crane overload crossbeam can install the fixed end cover or the axle plate, it is also necessary to machine internal threads on the inner wall of the support hole, the pulley mounting pin hole, and the rope guide shaft mounting pin hole; 3. The long waist hole machining part is generally set at the other end of the gantry crane overload crossbeam to place the counterweight structure; moreover, the long waist hole structure machined on the front and rear sides of the gantry crane overload crossbeam needs to be the same length but different widths, so that the distance of the counterweight plate can be adjusted to ensure that the entire crossbeam is always in a balanced position when subjected to the pressure of the wire rope.

[0004] Therefore, the machining process of the gantry crane's overload beam requires multiple steps to complete the machining of the three parts mentioned above, and the entire process often requires 3 or 4 people, significantly increasing labor costs. Especially in the absence of dedicated machining fixtures for the gantry crane's overload beam, it is impossible to simultaneously position the beam in the length, width, and height directions with a single clamping. Operators often need to manually perform marking and alignment operations between adjacent steps, resulting in increased auxiliary work, difficulty in ensuring consistent machining quality, and a long machining cycle. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a machining fixture for the overload beam of a gantry crane, which enables the gantry crane overload beam to be positioned in the length, width, and height directions in a single clamping operation. This allows it to work with existing CNC machining centers to perform one-time machining of the gantry crane overload beam, completing all the necessary machining tasks for the gantry crane overload beam in a single clamping or operation. This significantly reduces the number of processes, stabilizes product quality, lowers the skill requirements for operators, reduces the labor intensity of operators, thereby improving labor productivity and ensuring production schedule.

[0006] To solve the aforementioned technical problems, the technical solution provided by this utility model is as follows: a tooling for machining the overloaded crossbeam of a gantry crane, comprising a tooling base, a worktable mating part at the bottom of the tooling base, and a positioning arc groove on the upper surface of the tooling base, with a width positioning and tightening mechanism on each of the left and right sides of the positioning arc groove. When machining the overloaded crossbeam of a gantry crane using this utility model, it can be first mounted on the worktable of a CNC machining center using the worktable mating part, and then the overloaded crossbeam of the gantry crane to be machined can be placed on the utility model, thereby achieving the positioning of the overloaded crossbeam of the gantry crane on the worktable. Furthermore, when placing the gantry crane's overload beam, the raised contour arc of the beam at the support hole machining location can be placed within the positioning arc groove. The engagement between the positioning arc groove and the raised contour arc achieves positioning of the gantry crane's overload beam and the tooling base in both length and height directions. The two side plates of the gantry crane's overload beam are placed on the front and rear sides of the width positioning and tightening mechanism, respectively. The engagement between the width positioning and tightening mechanism and the two side plates achieves positioning of the gantry crane's overload beam and the tooling base in the width direction, and also secures the entire gantry crane's overload beam on the tooling base. In this way, all the necessary machining tasks for the gantry crane's overload beam can be completed in a single clamping operation, significantly reducing the number of processes, stabilizing product quality, lowering the skill requirements for operators, and reducing the labor intensity of operators, thereby increasing labor productivity and ensuring production schedules.

[0007] Furthermore, the width positioning and tightening mechanism includes a fixed block fixedly mounted on the top surface of the tooling base. A connecting stud is provided on the top of the fixed block. The upper part of the front side and the upper part of the rear side of the fixed block are respectively set as inclined surface one and inclined surface two. The upper ends of inclined surface one and inclined surface two are both inclined inward, and inclined surface one and inclined surface two are symmetrically arranged. The width positioning and tightening mechanism also includes a portal-shaped movable block. The lower end of the portal-shaped movable block has a trapezoidal groove that is smaller at the top and larger at the bottom. The two inclined groove walls of the trapezoidal groove are respectively arranged opposite to and in contact with inclined surface one and inclined surface two. A locking hole is passed through the bottom of the trapezoidal groove. A movable connecting rod is installed in the locking hole. The upper end of the movable connecting rod extends out of the locking hole and is fixedly mounted with an upper locking member. The lower end of the upper locking member abuts against the top surface of the portal-shaped movable block. The lower end of the movable connecting rod extends out of the locking hole and is fixedly mounted with a lower locking member. The upper end of the lower locking member abuts against the bottom of the trapezoidal groove. The upper locking member and / or the lower locking member are threadedly connected to the connecting stud. In this way, the upper locking component can be rotated to drive the movable connecting rod and the lower locking component to rotate, and the threaded engagement structure between the upper locking component and the connecting stud can drive the gantry-shaped movable block to move up or down. At this time, with the cooperation of the trapezoidal groove and the first and second inclined surfaces, the two sides of the trapezoidal groove will push outward and squeeze the inner edges of the two sides of the gantry machine overload beam, thereby achieving the centering positioning of the gantry machine overload beam in the width direction, that is, its centering positioning in the thickness direction. At the same time, it can also press the two sides of the gantry machine overload beam tightly through the gantry-shaped movable block to achieve the relative fixation of the gantry machine overload beam and the tooling base.

[0008] Furthermore, an arc-shaped groove is provided at the included angle of the trapezoidal groove, and the arc-shaped groove ensures that the two inclined groove walls of the trapezoidal groove can be pushed outward after being squeezed, so as to press the two side plates of the overloaded beam of the gantry crane tightly.

[0009] Furthermore, at least one auxiliary fixing mechanism is provided on both the front and rear sides of the tooling base, and the tooling base is fixed to the internal worktable of the CNC machining center through the auxiliary fixing mechanism.

[0010] Furthermore, flange edges are provided on the bottom of both the front and rear sides of the tooling base; the auxiliary fixing mechanism includes a pressure plate, one end of which is pressed against the upper edge of the flange edge, and the other end of which is provided with an auxiliary support block, the bottom surface of which is flush with the bottom surface of the tooling base; a mounting hole is provided in the middle of the pressure plate, and a clamping bolt is fitted in the mounting hole, the end of which passes through the mounting hole and is threaded to a clamping nut. When installing this invention on the worktable inside a CNC machining center, the tooling base can be placed on the worktable surface first, then the pressure plate in the auxiliary fixing mechanism can be placed above the flange edge of the tooling base. The stud of the clamping bolt then passes through the T-slot and mounting hole on the worktable surface from bottom to top and is threaded to the clamping nut, so that the clamping bolt is in a state where it can slide up and down relative to the pressure plate; then the position of the tooling base is adjusted until it is in the specified position, and the clamping nut is tightened to complete the fixing of the tooling base.

[0011] Furthermore, the mounting hole is an elongated hole, and the length direction of the mounting hole is the width direction of the tooling base, so as to ensure that the clamping bolt can be smoothly inserted into the T-slot of the worktable.

[0012] Furthermore, the worktable mating part is an inverted T-shaped strip. The upper end of the vertical section of the inverted T-shaped strip is fixedly connected to the bottom surface of the fixture base, and the lower end of the vertical section of the inverted T-shaped strip is the horizontal section of the inverted T-shaped strip. At this time, the fixture base can be fixed at the worktable by the mating part of the inverted T-shaped worktable with the T-slot provided on the upper surface of the worktable inside the CNC machining center. That is, by inserting the inverted T-shaped strip into the T-slot on the upper surface of the worktable, the entire gantry crane overload beam machining fixture is fixed at the worktable, and it is ensured that the entire gantry crane overload beam machining fixture and the gantry crane overload beam it clamps can rotate horizontally with the worktable.

[0013] As can be seen from the above technical solutions, this utility model has the following advantages: When using this utility model to process the overload beam of the gantry crane, it only needs to be clamped once to complete all the required processing tasks of the overload beam of the gantry crane, thereby greatly reducing the process flow, stabilizing product quality, reducing the skill requirements of operators, and reducing the labor intensity of operators, thereby improving labor productivity and ensuring the production schedule. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overload beam of a gantry crane in the prior art;

[0016] Figure 2 This is a schematic diagram of the installation structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the I-shaped nut in this utility model;

[0018] Figure 4 This is a schematic diagram of the working process of this utility model.

[0019] In the diagram: 1. Overload beam of the gantry crane; 2. Process support rod; 3. Ear; 4. Raised contour arc; 5. Long strip waist hole machining area; 6. Support hole machining area; 7. Pulley mounting pin hole machining area; 8. Workbench; 9. Positioning arc groove; 10. Gate-shaped movable block; 11. Fixed block; 12. Tooling base; 13. I-shaped nut; 14. Auxiliary fixing mechanism; 15. Lower stop; 16. Movable connecting rod; 17. Upper stop. Detailed Implementation

[0020] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] like Figures 2 to 4 As shown, this utility model provides a machining fixture for a gantry crane overload beam, which includes a fixture base 12. The bottom of the fixture base 12 is provided with a worktable mating part, and the fixture is mounted on the worktable 8 of a CNC machining center through the worktable mating part. Specifically, in this embodiment, the worktable mating part is an inverted T-shaped strip fixedly disposed at the bottom of the fixture base 12, and the upper end of the vertical section of the inverted T-shaped strip is fixedly connected to the bottom surface of the fixture base 12, while the lower end of the vertical section of the inverted T-shaped strip is the horizontal section of the inverted T-shaped strip. The fixture base 12 can then mate with the T-shaped groove on the upper surface of the worktable 8 inside the CNC machining center through the inverted T-shaped worktable mating part. That is, by inserting the inverted T-shaped strip into the T-shaped groove on the upper surface of the worktable 8, the entire gantry crane overload beam machining fixture is fixed on the worktable 8, ensuring that the entire gantry crane overload beam machining fixture and the gantry crane overload beam 1 it clamps can rotate horizontally with the worktable 8.

[0022] Furthermore, as a preferred embodiment, the present invention may also provide flange edges at the bottom of the front and rear sides of the tooling base 12, and at least one auxiliary fixing mechanism 14 at each flange edge along the length direction of the tooling base 12, thereby strengthening the connection between the tooling base 12 and the worktable 8 inside the CNC machining center. Specifically, as shown in the figure... Figure 2 As shown, the auxiliary fixing mechanism 14 includes a pressure plate. One end of the pressure plate is pressed against the upper part of the corresponding flange edge, and the other end of the pressure plate is provided with an auxiliary support block, with the bottom surface of the auxiliary support block flush with the bottom surface of the tooling base 12. A mounting hole is provided in the middle of the pressure plate. The mounting hole is an elongated hole, and a clamping bolt is fitted inside the mounting hole. The end of the clamping bolt passes through the mounting hole and is threadedly connected to a clamping nut. When installing this invention on the worktable 8 inside a CNC machining center, the tooling base 12 can be placed on the surface of the worktable 8 first, then the pressure plate in the auxiliary fixing mechanism 14 can be placed above the flange edge of the tooling base 12. Then, the stud of the clamping bolt passes through the T-slot and mounting hole on the surface of the worktable 8 from bottom to top and is threadedly connected to the clamping nut, so that the clamping bolt is in a state where it can slide up and down relative to the pressure plate. Next, the position of the tooling base 12 is adjusted until it is in the specified position, and then the clamping nut is tightened to complete the fixing of the tooling base 12.

[0023] A positioning arc groove 9 is provided at the middle position of the upper surface of the tooling base 12, and the radius of the positioning arc groove 9 is consistent with the radius of the raised contour arc 4 provided at the support hole processing part 6 of the overload beam 1 of the gantry crane to be processed.

[0024] The upper surface of the tooling base 12 is provided with a width positioning and tightening mechanism on each of the left and right sides of the positioning arc groove 9, and the distance between the two width positioning and tightening mechanisms and the positioning arc groove 9 is less than the distance between the pulley mounting pin hole processing part 7 and the support hole processing part 6 on the overload beam 1 of the gantry machine to be processed, and the distance between the long waist hole processing part 5 and the support hole processing part 6 on the overload beam 1 of the gantry machine to be processed.

[0025] Furthermore, in this embodiment, the width positioning and tightening mechanism includes a fixing block 11 fixedly mounted on the top surface of the tooling base 12. A connecting stud is provided on the top of the fixing block 11. The upper part of the front side and the upper part of the rear side of the fixing block 11 are respectively configured as inclined surface one and inclined surface two. The upper ends of both inclined surface one and inclined surface two are inclined inwards, and inclined surface one and inclined surface two are symmetrically arranged about the centerline of the fixing block 11. The width positioning and tightening mechanism also includes a portal-shaped movable block 10. The lower end of the portal-shaped movable block 10 has a trapezoidal groove that is smaller at the top and larger at the bottom, and it spans above the fixing block 11 through the trapezoidal groove. The two inclined groove walls of the trapezoidal groove are respectively positioned opposite and in contact with inclined surface one and inclined surface two. A locking hole is passed through the bottom of the trapezoidal groove, and an I-shaped nut 13 is fitted inside the locking hole. The I-shaped nut 13 includes a movable connecting rod 16 that can rotate freely within the locking hole. The upper end of the movable connecting rod 16 extends out of the locking hole and is fixedly provided with an upper locking member 17. The lower end of the upper locking member 17 abuts against the top surface of the portal-shaped movable block 10. The lower end of the movable connecting rod 16 extends out of the locking hole and is fixedly provided with a lower locking member 15. The upper end of the lower locking member 15 abuts against the bottom of the trapezoidal groove. The upper locking member 17 and the lower locking member 15 are preferably nut structures, and the movable connecting rod 16 is preferably a hollow tube structure. The upper locking member 17 and / or the lower locking member 15 are threadedly connected to the connecting stud. In this way, the upper locking member 17 can be rotated to drive the movable connecting rod 16 and the lower locking member 15 to rotate, and the threaded engagement structure between the upper locking member 17 and the connecting stud can drive the gantry movable block 10 to move up or down. At this time, with the cooperation of the trapezoidal groove and the first and second inclined surfaces, the two sides of the trapezoidal groove will be pushed outward and squeeze the inner edges of the two sides of the gantry overload beam 1, thereby achieving the centering of the gantry overload beam 1 in the width direction, that is, its centering in the thickness direction. At the same time, the gantry movable block 10 can also press the two sides of the gantry overload beam 1 to achieve the relative fixation of the gantry overload beam 1 and the tooling base 12.

[0026] Based on this, such as Figure 4As shown, when processing the gantry crane overload beam 1 using this utility model, the utility model can first be installed on the worktable 8 of the CNC machining center using the worktable mating part, and then the gantry crane overload beam 1 to be processed can be placed on the utility model, thereby achieving the positioning of the gantry crane overload beam 1 on the worktable 8. Moreover, when placing the gantry crane overload beam 1, the raised contour arc 4 provided at the support hole processing part 6 of the gantry crane overload beam 1 can be placed in the positioning arc groove 9, and the positioning arc groove 9 and the raised contour arc 4 can be used to achieve the positioning of the gantry crane overload beam 1 and the tooling base 12 in the length and height directions; the two side plates of the gantry crane overload beam 1 are placed on the front and rear sides of the width positioning and tightening mechanism, respectively, and the positioning of the gantry crane overload beam 1 and the tooling base 12 in the width direction can be achieved by the cooperation between the width positioning and tightening mechanism and the two side plates, and the entire gantry crane overload beam 1 can be fixed on the tooling base 12. In this way, all the necessary processing tasks for the gantry crane's overload beam 1 can be completed with just one clamping during the entire processing, thereby significantly reducing the number of processes, stabilizing product quality, reducing the skill requirements for operators, and reducing the labor intensity of operators, thereby improving labor productivity and ensuring the production schedule.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tooling for machining an overloaded crossbeam of a gantry crane, comprising a tooling base (12), characterized in that, The bottom of the tooling base (12) is provided with a worktable mating part, and the upper surface of the tooling base (12) is provided with a positioning arc groove (9). A width positioning clamping mechanism is provided on each of the left and right sides of the positioning arc groove (9).

2. The gantry crane overload beam machining fixture according to claim 1, characterized in that, The width positioning and tightening mechanism includes a fixing block (11) fixedly mounted on the top surface of the tooling base (12). A connecting stud is provided on the top of the fixing block (11). The upper part of the front side and the upper part of the rear side of the fixing block (11) are respectively set as inclined surface one and inclined surface two. The upper ends of inclined surface one and inclined surface two are both inclined inward, and inclined surface one and inclined surface two are symmetrically arranged. The width positioning and tightening mechanism also includes a portal-shaped movable block (10). The lower end of the portal-shaped movable block (10) is provided with a trapezoidal groove that is smaller at the top and larger at the bottom. The two inclined groove walls of the trapezoidal groove are respectively inclined with the inclined surface one and inclined surface two. Inclined surface 1 and inclined surface 2 are arranged opposite to each other and in contact. The bottom of the trapezoidal groove has a locking hole through which a movable connecting rod (16) is installed. The upper end of the movable connecting rod (16) extends out of the locking hole and is fixedly provided with an upper locking member (17). The lower end of the upper locking member (17) abuts against the top surface of the gate-shaped movable block (10). The lower end of the movable connecting rod (16) extends out of the locking hole and is fixedly provided with a lower locking member (15). The upper end of the lower locking member (15) abuts against the bottom of the trapezoidal groove. The upper locking member (17) and / or the lower locking member (15) are threadedly connected to the connecting stud.

3. The gantry crane overload beam processing fixture according to claim 2, characterized in that, An arc-shaped groove is provided at the included angle of the trapezoidal groove.

4. The gantry crane overload beam machining fixture according to claim 1, characterized in that, At least one auxiliary fixing mechanism (14) is provided on both the front and rear sides of the tooling base (12).

5. The gantry crane overload beam machining fixture according to claim 4, characterized in that, Flange edges are provided on the bottom of both the front and rear sides of the tooling base (12); the auxiliary fixing mechanism (14) includes a pressure plate, one end of which is pressed on the top of the flange edge, and the other end of which is provided with an auxiliary support block. The bottom surface of the auxiliary support block is flush with the bottom surface of the tooling base (12); the middle of the pressure plate is provided with an installation hole, and a clamping bolt is installed in the installation hole. The end of the clamping bolt passes through the installation hole and is threaded with a clamping nut.

6. The gantry crane overload beam machining fixture according to claim 5, characterized in that, The mounting holes are elongated.

7. The gantry crane overload beam machining fixture according to claim 1, characterized in that, The workbench mating part is an inverted T-shaped strip. The upper end of the vertical section of the inverted T-shaped strip is fixedly connected to the bottom surface of the tooling base (12), and the lower end of the vertical section of the inverted T-shaped strip is the horizontal section of the inverted T-shaped strip.

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