Bucket rod steel casting fixing tool

Abstract

The utility model belongs to the field of tool clamps, and discloses a bucket rod steel casting fixing tool which comprises an operation table, a bucket rod is placed on the operation table, a fixed clamping device is arranged on the left side of the bucket rod, side face clamping devices symmetrical in structure are arranged on the front portion and the rear portion of the bucket rod respectively, a movable clamping device is arranged at the right end of the bucket rod, and a bottom supporting device is arranged at the bottom of the bucket rod. The movable clamping device comprises a servo motor, the output end of the servo motor is connected with a rotating shaft through a coupler, the two ends of the rotating shaft are supported through bearing pedestals, a worm is arranged on the rotating shaft, the transmission box comprises a shell, a worm wheel is arranged at the bottom of the shell and matched with the worm, a bevel gear A is coaxially fixed to the top of the worm wheel, and the bevel gear A is fixedly connected with the shell. The side top plate screw is in threaded connection with the center of the bevel gear B. A side top plate is fixed to the end, close to the bucket rod, of the side top plate screw. The problems that a manual bucket rod fixing tool is low in efficiency, and a hydraulic fixing tool is huge in structure and not easy to move are solved.

Description

Technical Field

[0001] The utility model belongs to the field of tooling fixtures, and particularly relates to a fixing tooling for a boom steel casting. Background Art

[0002] In construction machinery such as excavators, the boom is a key working device, and its installation position and accuracy have an important impact on the overall performance and operation efficiency of the equipment. The tooling can ensure that the boom steel casting is in the correct position during assembly and maintenance, preventing it from moving or deforming, thereby ensuring the accuracy of processing and assembly. During the clamping and positioning process of the boom steel casting, the screw fixing method is mostly used, and the position of the boom steel casting is fixed by manually tightening the screw, with very slow efficiency; in the hydraulic system clamping and fixing tooling method, components such as hydraulic pumps, hydraulic cylinders, hydraulic valves, and fuel tanks need to occupy a large space, making the entire fixing tooling structure large and heavy, and not easy to move. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fixing tooling for a boom steel casting, which solves the problems of low efficiency of manual fixing of the boom tooling and the large and not easily movable structure of the hydraulic fixing tooling.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A fixing tooling for a boom steel casting includes an operation table, on which a boom is placed. A fixed clamping device is arranged on the left side of the boom, side clamping devices with symmetrical structures are respectively arranged at the front and back, a moving clamping device is arranged at the right end to fix the position of the boom, and a bottom support device is arranged at the bottom of the boom; the moving clamping device includes a servo motor, a rotating shaft, a bearing seat, a worm, and a transmission box. The servo motor is fixed to the operation table, the output end of the servo motor is connected to the rotating shaft through a coupling, both ends of the rotating shaft are supported by bearing seats, a worm is arranged on the rotating shaft, and the worm is connected to the transmission box; the transmission box includes a housing, a worm gear, a bevel gear A, a bevel gear B, a side top plate screw, and a side top plate. A worm gear is arranged at the bottom of the housing, the worm gear is matched with the worm, a horizontal bevel gear A is coaxially fixed at the top of the worm gear, the bevel gear B is vertical and meshed with the bevel gear A, the side top plate screw is threadedly connected to the center of the bevel gear B, and a side top plate is fixed at one end of the side top plate screw close to the boom.

[0006] Preferably, a guiding cylinder is integrally formed at the top of the housing, a connecting plate is fixed on the side top plate screw, and a guiding shaft is fixed at the end of the connecting plate and is slidably connected along the inside of the guiding cylinder.

[0007] Preferably, the fixed clamping device includes a fixed seat, a fixed top plate, and a fixed pressing plate. The fixed seat is fixedly connected to the operating table by bolts. The fixed top plate and the fixed pressing plate are respectively fixedly connected to the fixed seat through shafts. The fixed top plate is vertical, and the angle of the fixed pressing plate is fixed to fit the inclined surface angle at the top left end of the bucket arm.

[0008] Preferably, the movable clamping device includes an electric cylinder base, a servo electric cylinder, a movable plate, a movable top plate, and a movable pressing plate device. The electric cylinder base is fixed to the operating table. The servo electric cylinder is fixed to the top of the electric cylinder base. The telescopic shaft end of the servo electric cylinder is fixed to the movable plate. The movable top plate is fixed to the opposite surface of the movable plate and the bucket arm. The movable pressing plate device for restricting the upward movement of the bucket arm is installed on the upper part of the movable plate.

[0009] Preferably, the movable pressing plate device includes a prism, a spring pressing plate, a spring, a hinge shaft, and a movable pressing plate. The prism is located on the upper part of the movable plate and slides horizontally. The spring pressing plate is fixed to the prism on the left side of the movable plate. A spring is arranged between the spring pressing plate and the movable plate. The left end of the prism is hinged to the movable pressing plate through the hinge shaft.

[0010] Preferably, a counterweight block is arranged on the right side inside the movable pressing plate to make the bottom surface of the movable pressing plate inclined.

[0011] Preferably, the bottom support device includes a bottom support plate, a support column, a U-shaped plate, and a roller. The bottom support plate is fixedly connected to the operating table by bolts. The support column is welded to the top of the bottom support plate. The U-shaped plate is welded to the top of the support column. A plurality of rollers are connected inside the U-shaped plate.

[0012] The utility model has the following beneficial effects:

[0013] 1. The side top plate is linked by a servo motor to realize the clamping and positioning of the bucket arm. Moreover, the screw of the side top plate adopts a threaded connection method, which has a self-locking function, making the clamping and positioning of the bucket arm steel casting more rapid, saving labor costs, and occupying less space, being convenient for moving.

[0014] 2. The electric cylinder can clamp and fix the position of the bucket arm steel casting left and right through the movable top plate, and the movable pressing plate can restrict the up and down movement of the bucket arm.

[0015] 3. The roller can support the bucket arm steel casting and also reduce the friction when the bucket arm steel casting is clamped and pushed, avoiding scratching the bottom surface of the bucket arm steel casting. Description of the Drawings

[0016] Figure 1 is the external structure schematic diagram of the utility model;

[0017] Figure 2 is the front view of the utility model;

[0018] Figure 3 is a schematic structural view of the transmission box of the present utility model;

[0019] Figure 4 is a schematic view of the transmission of the worm gear, worm, helical gear A and helical gear B of the present utility model;

[0020] Figure 5 is a schematic structural view of the movable pressing plate device of the present utility model;

[0021] Figure 6 is a schematic view of the position of the counterweight of the present utility model;

[0022] Figure 7 is a schematic structural view of the bottom support device of the present utility model

[0023] Icon: 1. Operating platform; 2. Dipper stick; 3. Fixed clamping device; 31. Fixed seat; 32. Fixed top plate; 33. Fixed pressing plate; 4. Side clamping device; 41. Servo motor; 42. Rotating shaft; 421. Worm; 43. Bearing seat; 44. Transmission box; 441. Housing; 442. Guide tube; 443. Worm gear; 444. Helical gear A; 445. Helical gear B; 446. Side top plate screw; 447. Side top plate; 448. Connecting plate; 449. Guide shaft; 5. Movable clamping device; 51. Electric cylinder base; 52. Servo electric cylinder; 53. Movable plate; 54. Movable top plate; 55. Movable pressing plate device; 551. Prism; 552. Spring pressing plate; 553. Spring; 554. Hinge shaft; 555. Movable pressing plate; 5551. Counterweight; 6. Bottom support device; 61. Bottom support plate; 62. Support column; 63. U-shaped plate; 64. Roller. Specific embodiments

[0024] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

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

[0026] As Figure 1-7As shown in the figure, in this embodiment, a fixing tooling for a boom steel casting includes an operating table 1. A boom 2 to be positioned by the clamping tooling is placed on the operating table 1. A fixed clamping device 3 is arranged on the left side of the boom 2. With the fixed structure of the fixed clamping device 3 as the reference, the boom 2 is made to approach the fixed clamping device 3. Side clamping devices 4 with symmetrical structures are respectively arranged at the front and rear. The front and rear positions of the boom 2 are clamped and fixed by the side clamping devices 4 to restrict the front and rear movement of the boom 2. A moving clamping device 5 is arranged at the right end. The boom is pushed and clamped towards the fixed clamping device 3 by the moving clamping device 5 to restrict the left-right and up-down movement of the boom 2. A bottom support device 6 is arranged at the bottom of the boom 2 to support the boom 2. The moving clamping device 5 includes a servo motor 41, a rotating shaft 42, a bearing seat 43, a worm 421, and a transmission box 44. The servo motor 41 is fixed to the operating table 1. The output end of the servo motor 41 is connected to the rotating shaft 42 through a coupling. The two ends of the rotating shaft 42 are supported by the bearing seats 43. The worm 421 is arranged on the rotating shaft 42. The worm 421 is connected to the transmission box 44. With the servo motor 41 as the power output, compared with the hydraulic system, the structure is simpler and occupies less space, facilitating the overall movement. The transmission box 44 includes a housing 441, a worm gear 443, a helical gear A 444, a helical gear B 445, a side top plate screw 446, and a side top plate 447. A worm gear 443 is arranged at the bottom of the housing 441. The worm gear 443 cooperates with the worm 421 to change the transmission direction and also achieve a self-locking function. A horizontal helical gear A 444 is coaxially fixed at the top of the worm gear 443. The helical gear B 445 is vertical and meshed with the helical gear A 444. The side top plate screw 446 is threadedly connected to the center of the helical gear B 445. A side top plate 447 is fixed at one end of the side top plate screw 446 close to the boom 2, playing a role in clamping and positioning the boom 2. Instead of manual operation, the efficiency of the boom 2 positioning tooling is high. By coaxially connecting the worm gear 443 and the helical gear A 444, the side top plate 447 can be controllably located at the middle positions of the front and rear sides of the boom 2, ensuring the stability of the boom 2 clamping and positioning tooling. Secondly, the rotating shaft 42 can also be made close to the operating table 1 to avoid the position of the rotating shaft 42 being too high and affecting the placement of the boom 2.

[0027] A guiding cylinder 442 is integrally formed at the top of the housing 441. A connecting plate 448 is fixed on the side top plate screw 446. A guiding shaft 449 is fixed at the end of the connecting plate 448. The guiding shaft 449 is slidably connected along the guiding cylinder 442. Through the connection between the guiding cylinder 442 and the guiding shaft 449, the side top plate screw 446 is restricted from rotating synchronously with the helical gear B 445, and the side top plate screw 446 moves horizontally to realize the clamping of the boom 2 by the side top plate 447.

[0028] The fixed clamping device 3 includes a fixed base 31, a fixed top plate 32, and a fixed pressing plate 33. The fixed base 31 is fixedly connected to the operating table 1 by bolts. The fixed top plate 32 and the fixed pressing plate 33 are respectively fixedly connected to the fixed base 31 by shafts. The fixed top plate 32 is vertical, and the angle of the fixed pressing plate 33 is fixed to fit the inclined plane angle at the top left end of the dipper arm 2, restricting the upward movement of the left end of the dipper arm 2. Taking the fixed top plate 32 and the fixed pressing plate 33 as reference plates, the moving clamping device 5 moves and clamps the dipper arm 2 towards them.

[0029] The moving clamping device 5 includes an electric cylinder base 51, a servo electric cylinder 52, a moving plate 53, a moving top plate 54, and a moving pressing plate device 55. The electric cylinder base 51 is fixed to the operating table 1. The servo electric cylinder 52 is fixed to the top of the electric cylinder base 51. The telescopic shaft end of the servo electric cylinder 52 is fixed to the moving plate 53. The moving top plate 54 is fixed to the opposite surface of the moving plate 53 and the dipper arm 2, enabling the dipper arm 2 to be horizontally pushed and moved to the fixed top plate 32 for left and right clamping. The moving pressing plate device 55 for restricting the upward movement of the dipper arm 2 is installed on the upper part of the moving plate 53, restricting the upward movement of the right end of the dipper arm 2.

[0030] The moving pressing plate device 55 includes a prism 551, a spring pressing plate 552, a spring 553, a hinge shaft 554, and a moving pressing plate 555. The prism 551 is located on the upper part of the moving plate 53 and slides horizontally. The spring pressing plate 552 is fixed to the prism 551 on the left side of the moving plate 53. A spring 553 is arranged between the spring pressing plate 552 and the moving plate 53. The left end of the prism 551 is hinged to the moving pressing plate 555 through the hinge shaft 554. When the moving pressing plate device 55 moves with the moving plate 53, the moving pressing plate 555 contacts the dipper arm 2 earlier than the moving top plate 54, so that the moving pressing plate 555 contacts the top of the right end of the dipper arm 2. The moving pressing plate 555 is movable and can fit the inclined plane at the top of the right end of the dipper arm 2. Under the action of the spring 553, the moving pressing plate 555 fits closely with the dipper arm 2, playing a role in restricting the upward movement of the dipper arm 2.

[0031] A counterweight block 5551 is arranged on the right side inside the moving pressing plate 555, making the moving pressing plate 555 heavier and the bottom surface of the moving pressing plate 555 inclined, ensuring that the moving pressing plate 555 can fit when it first contacts the inclined plane at the top of the dipper arm 2.

[0032] The bottom support device 6 includes a bottom support plate 61, a support column 62, a U-shaped plate 63, and a rotating roller 64. The bottom support plate 61 is fixedly connected to the operating table 1 by bolts. The support column 62 is welded to the top of the bottom support plate 61. The U-shaped plate 63 is welded to the top of the support column 62. A plurality of rotating rollers 64 are connected inside the U-shaped plate 63, enabling the dipper arm 2 to slide smoothly during the horizontal push by the servo electric cylinder 52, reducing the friction at the bottom of the dipper arm 2 and also preventing the bottom surface of the dipper arm 2 from being scratched.

[0033] The working principle of the present utility model is as follows:

[0034] Preparation work: Place the to-be-processed dipper stick 2 on the operating table and position it between the fixed clamping device 3, the side clamping device 4, and the moving clamping device 5. Push the left end of the dipper stick 2 horizontally towards the fixed top plate 32 and the fixed pressing plate 33 of the fixed clamping device 3. During this period, the dipper stick 2 slides on the bottom roller 64.

[0035] Front and rear clamping and positioning: Start the servo motor 41 to drive the rotation of the rotating shaft 42, which drives the rotation of the worm 421. Through the transmission between the worm gear 443 and the worm 421, the helical gear A 444 rotates synchronously. The helical gear A 444 drives the helical gear B 445 to rotate synchronously, driving the center side top plate screw 446 of the helical gear B 445. The side top plate screw 446 is under the action of the guide shaft 449 to achieve horizontal movement and clamp and fix the side of the dipper stick 2.

[0036] Left and right clamping and positioning: Start the servo electric cylinder 52 to drive the movement of the moving plate 53. The moving pressing plate 555 first contacts and fits with the right top inclined surface of the dipper stick 2. During this period, after the spring 553 is compressed, the moving top plate 54 then contacts the right end of the dipper stick 2, firmly clamping the dipper stick 2 between the fixed top plate 32 and the moving top plate 54, clamping and fixing the left and right sides of the dipper stick 2. Synchronously, the fixed pressing plate 33 and the moving pressing plate 555 restrict the upward movement of the right end of the dipper stick 2.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fixture for fixing a boom steel casting, comprising an operating platform (1), on which a boom (2) is placed, characterized in that: A fixed clamping device (3) is provided on the left side of the boom (2), side clamping devices (4) with symmetrical structures are provided at the front and rear, a movable clamping device (5) is provided at the right end to fix the position of the boom (2), and a bottom support device (6) is provided at the bottom of the boom (2); The mobile clamping device (5) comprises a servo motor (41), a rotating shaft (42), a bearing seat (43), a worm (421), and a transmission box (44); the servo motor (41) is fixed to the operating table (1); the output end of the servo motor (41) is connected to the rotating shaft (42) via a coupling; both ends of the rotating shaft (42) are supported by the bearing seat (43); a worm (421) is provided on the rotating shaft (42); and the worm (421) is connected to the transmission box (44); The transmission box (44) comprises a housing (441), a worm wheel (443), a bevel gear A (444), a bevel gear B (445), a side top plate screw (446), and a side top plate (447). A worm wheel (443) is arranged at the bottom of the housing (441), the worm wheel (443) cooperates with the worm (421), a horizontal bevel gear A (444) is coaxially fixed to the top of the worm wheel (443), the bevel gear B (445) is vertical and meshingly connected with the bevel gear A (444), the side top plate screw (446) is threadedly connected to the center of the bevel gear B (445), and a side top plate (447) is fixed to one end of the side top plate screw (446) close to the boom (2).

2. The fixture for fixing a boom steel casting according to claim 1, characterized in that: A guide cylinder (442) is integrally formed on the top of the shell (441), a connecting plate (448) is fixed on the side top plate screw (446), a guide shaft (449) is fixed at the end of the connecting plate (448), and the guide shaft (449) is slidably connected inside the guide cylinder (442).

3. The fixture for fixing a boom steel casting according to claim 1, characterized in that: The fixed clamping device (3) comprises a fixed seat (31), a fixed top plate (32), and a fixed pressure plate (33); the fixed seat (31) is fixedly connected to the operating platform (1) by bolts; the fixed seat (31) is fixedly connected to the fixed top plate (32) and the fixed pressure plate (33) by shafts; the fixed top plate (32) is vertical; and the angle of the fixed pressure plate (33) is fixed to fit the angle of the top inclined surface of the left end of the boom (2).

4. The fixture for fixing a boom steel casting according to claim 1, characterized in that: The mobile clamping device (5) comprises an electric cylinder base (51), a servo electric cylinder (52), a mobile plate (53), a mobile top plate (54), and a mobile pressure plate device (55); the electric cylinder base (51) is fixed to the operating table (1); a servo electric cylinder (52) is fixed to the top of the electric cylinder base (51); a mobile plate (53) is fixed to the telescopic shaft end of the servo electric cylinder (52); a mobile top plate (54) is fixed on the opposite surface of the mobile plate (53) and the boom (2); and a mobile pressure plate device (55) for limiting the upward movement of the boom (2) is installed on the upper part of the mobile plate (53).

5. The fixture for fixing the arm steel casting according to claim 4, characterized in that: The movable pressure plate device (55) comprises a prism (551), a spring pressure plate (552), a spring (553), a hinge shaft (554), and a movable pressure plate (555); the prism (551) is located on the upper part of the movable plate (53) and slides in the horizontal direction; a spring pressure plate (552) is fixed on the prism (551) on the left side of the movable plate (53); a spring (553) is arranged between the spring pressure plate (552) and the movable plate (53); and the left end of the prism (551) is hinged to the movable pressure plate (555) via the hinge shaft (554).

6. The fixture for fixing the arm steel casting according to claim 5, characterized in that: A counterweight block (5551) is arranged on the right side of the movable pressing plate (555) to make the bottom surface of the movable pressing plate (555) inclined.

7. The fixture for fixing a boom steel casting according to claim 1, characterized in that: The bottom support device (6) comprises a bottom support plate (61), a support column (62), a U-shaped plate (63), and rollers (64); the bottom support plate (61) is fixedly connected to the operating table (1) by bolts; a support column (62) is welded to the top of the bottom support plate (61); a U-shaped plate (63) is welded to the top of the support column (62); and a plurality of rollers (64) are connected inside the U-shaped plate (63).

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