Automatic roll-over stand

Abstract

The utility model discloses an automatic roll-over stand which comprises a fixing frame, a roll-over mechanism is installed on one side of the fixing frame, two sets of clamping assemblies are installed on the roll-over mechanism, the two sets of clamping assemblies are used for clamping workpieces, the roll-over mechanism comprises a sliding plate seat plate, a rotation driver and a rotation bottom plate, the sliding plate seat plate is installed on the fixing frame, and the rotation driver is installed on the rotation bottom plate. A fixed part of the rotary driver is installed at the end, away from the fixed frame, of the sliding plate base plate, a positioning ring is arranged on a rotating part of the rotary driver, a hydraulic rotating connector is installed at one end of the rotary bottom plate and inserted into the positioning ring, and the rotary bottom plate is connected with the rotating part of the rotary driver. The clamping assembly is mounted at the other end of the rotary bottom plate; the workpiece is clamped by arranging the clamping assembly, and the rotary bottom plate is driven to rotate by the rotary driver, so that the workpiece is automatically overturned, the labor intensity is reduced, the mounting efficiency is improved, an operator is prevented from being injured by a chain wheel shaft group in the overturning process, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to an automatic turning frame, in particular to an automatic turning frame for assembling a sprocket shaft group of a coal mine scraper, belonging to the technical field of sprocket shaft group installation. Background Art

[0002] The long shaft of the sprocket shaft group of the existing coal mine scraper weighs 800kg to 3000kg, is 1000mm to 2000mm in length, and has a diameter of 200mm to 800mm. During the installation process, the sprocket and the bearing seat need to be installed at both ends of the long shaft, and after installing one end, it needs to be flipped 180° before installing the other end. After flipping, the vertical positioning deviation of the workpiece is required to be ≤0.05°.

[0003] In actual production, electric hoists and lifting ropes are used for manual flipping. Due to the heavy weight and large size of the sprocket shaft assembly, and the extremely strong flexibility of the lifting rope hanging flipping, the sprocket shaft assembly produces non-directional swings under the action of inertia during the flipping process. Therefore, it is necessary to manually hold the lifting rope for auxiliary rotation during the flipping process, resulting in high labor intensity and low efficiency in the installation of the sprocket shaft assembly, and there are certain safety hazards. For example, the sprocket shaft assembly may injure the operator during the flipping process. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an automatic turning frame to solve the technical problems mentioned in the prior art.

[0005] An automatic turning frame comprises a fixed frame, a turning mechanism is installed on one side of the fixed frame, two groups of clamping assemblies are symmetrically installed on one side of the turning mechanism away from the fixed frame, and the two groups of clamping assemblies are used to clamp workpieces, wherein the turning mechanism comprises:

[0006] A skateboard seat plate, wherein the skateboard seat plate is mounted on the fixing frame;

[0007] A rotary driver, wherein the fixed portion of the rotary driver is mounted on an end of the skateboard seat away from the fixed frame, and a positioning ring is provided on the rotating portion of the rotary driver;

[0008] A revolving base plate, one end of which is equipped with a hydraulic rotating joint, which is inserted into the positioning ring, and the revolving base plate is connected to the rotating part of the revolving driver, the clamping assembly is installed at the other end of the revolving base plate, and the revolving driver is used to drive the revolving base plate to rotate, so as to realize automatic flipping of the workpiece.

[0009] Optionally, the fixing frame includes a base and a column, the column is installed on one side of the top end of the base, the skateboard seat is installed on the side wall of the column through a sliding assembly and is located directly above the base, a lifting unit is installed on the column, and the output end of the lifting unit is connected to the skateboard seat, which is used to drive the skateboard seat to slide up and down along the side wall of the column to adjust the height difference between the skateboard seat and the base.

[0010] Optionally, the sliding assembly includes:

[0011] A guide rail, the guide rail is installed on the side wall of the column along the vertical direction;

[0012] A slider, the slider is mounted on one end of the slider base plate close to the guide rail, the slider is provided with a U-shaped slide groove, and the U-shaped slide groove is slidably connected to the guide rail;

[0013] Two groups of roller pillars, the two groups of roller pillars are symmetrically installed on opposite sides of the pillar, and are located on both sides of the skateboard seat plate and are arranged parallel to the guide rail;

[0014] A plurality of rolling wheels are respectively arranged at one end of the skateboard seat close to the guide rail and on opposite sides of the column. The plurality of rolling wheels are respectively rollingly connected to the side of the roller support column away from the skateboard seat, and each of the rolling wheels is respectively installed on the skateboard seat through a bracket.

[0015] Optionally, the lifting unit comprises:

[0016] A lifting hydraulic cylinder, wherein the lifting hydraulic cylinder is installed on a side of the column away from the skateboard seat plate, and an output end of the lifting hydraulic cylinder is arranged upward;

[0017] Two groups of fixed seat plates, the two groups of fixed seat plates are installed on both sides of the top of the column, and the two sides of the opposite surfaces of the two groups of fixed seat plates are respectively installed with rotating shafts, and the rotating shafts are installed with sprockets, and the central axis of the sprockets is perpendicular to the moving direction of the skateboard seat plates;

[0018] A chain is sleeved on the top of the two groups of sprockets, and one end of the chain extends to the top of the skateboard seat and is connected to the skateboard seat, and the other end of the chain extends to the opposite side of the skateboard seat and is connected to the output end of the lifting hydraulic cylinder.

[0019] Optionally, the clamping assembly comprises:

[0020] Two groups of fixed shaft support seats, the two groups of fixed shaft support seats are symmetrically installed on the rotating base plate, a number of guide shafts are installed between the opposite surfaces of the two groups of fixed shaft support seats, two groups of connecting plates are symmetrically installed on the several guide shafts, and V-shaped clamping plates are respectively installed on the opposite surfaces of the two groups of connecting plates;

[0021] Clamping hydraulic cylinders are respectively installed on the opposite back surfaces of the two groups of fixed shaft support seats, and the output ends of the clamping hydraulic cylinders penetrate the fixed shaft support seats and are connected to the connecting plate.

[0022] Optionally, a linear bearing is provided between the fixing frame and each of the guide shafts, the linear bearing is sleeved and mounted on the guide shaft, and the connecting plate is fixedly connected to the outer periphery of the linear bearing.

[0023] Optionally, a mounting platform is provided at the top of the base directly below the clamping assembly.

[0024] Optionally, a gasket is installed on the clamping surface of the V-shaped clamp.

[0025] The beneficial effects that the utility model can produce include:

[0026] 1) The automatic turning frame provided by the utility model clamps the workpiece by setting a clamping assembly, and drives the rotating base plate to rotate through a rotary driver to realize automatic turning of the workpiece, thereby reducing labor intensity, improving installation efficiency, and preventing the sprocket shaft group from injuring the operator during the turning process, avoiding safety hazards.

[0027] 2) The automatic turning frame provided by the utility model is used to drive the slide plate to slide up and down along the side wall of the column to adjust the height difference between the slide plate and the base, thereby lowering the slide plate to the lowest position before installing the workpiece, which is convenient for clamping the workpiece. Workers are not required to lift the workpiece to the installation position for clamping, which can further reduce labor intensity; and the height of the installation position of the workpiece can be adjusted according to the rotation radius of the long axis, which is suitable for clamping workpieces of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the automatic turning frame of the utility model;

[0029] Figure 2 For the utility model Figure 1 Right view of;

[0030] Figure 3 For the utility model Figure 2 A top view of

[0031] Figure 4 For the utility model Figure 1 A front view of a skateboard seat plate;

[0032] Figure 5 For the utility model Figure 4 Rear view of

[0033] In the figure: 1, base, 2, column, 3, skateboard seat plate, 4, rotary drive, 5, positioning ring, 6, rotary base plate, 7, hydraulic rotary joint, 8, guide rail, 9, slider, 10, U-shaped slide, 11, roller support, 12, rolling wheel, 13, lifting hydraulic cylinder, 14, fixed seat plate, 15, rotating shaft, 16, sprocket, 17, chain, 18, fixed shaft support seat, 19, guide shaft, 20, connecting plate, 21, V-shaped clamping plate, 22, clamping hydraulic cylinder, 23, linear bearing, 24, mounting table, 25, gasket, 26, bracket. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0035] like Figure 1-Figure 5 As shown, the utility model provides an automatic turning frame, including a fixed frame, a turning mechanism is installed on one side of the fixed frame, and two groups of clamping assemblies are symmetrically installed on one side of the turning mechanism away from the fixed frame, and the two groups of clamping assemblies are used to clamp workpieces, wherein the turning mechanism includes:

[0036] A skateboard seat plate 3, wherein the skateboard seat plate 3 is mounted on a fixing frame;

[0037] A slewing driver 4 (SE9 type slewing driver may be selected), the fixed portion of the slewing driver 4 is installed at one end of the skateboard seat plate 3 away from the fixed frame, and a positioning ring 5 is provided on the rotating portion of the slewing driver 4;

[0038] The swivel base plate 6 has a hydraulic swivel joint 7 installed at one end of the swivel base plate 6. The hydraulic swivel joint 7 is inserted in the positioning ring 5 and is used to position and install the swivel base plate 6 and the rotating part of the swivel drive 4, and the swivel base plate 6 is fixedly connected to the rotating part of the swivel drive 4 by bolts, wherein the swivel base plate 6 is provided with countersunk bolt holes for passing bolts, and the rotating part of the swivel drive 4 is provided with corresponding threaded blind holes for bolts to pass through the countersunk bolt holes and be threadedly connected with the threaded blind holes. The clamping assembly is fixedly installed at the other end of the swivel base plate 6 and is used to clamp and fix the workpiece. After the sprocket 16 and the bearing seat at one end of the workpiece are installed, the swivel base plate 6 is driven by the swivel drive 4 to rotate 180° to realize automatic flipping of the workpiece, thereby reducing labor intensity, improving installation efficiency, and avoiding the sprocket 16 shaft group from hitting the operator during the flipping process to avoid safety hazards.

[0039] Furthermore, the fixing frame includes a base 1 and a column 2, the column 2 is fixedly mounted on one side of the top end of the base 1, the skateboard seat plate 3 is slidably mounted on the side wall of the column 2 through a sliding assembly, and is located directly above the base 1, and a lifting unit is installed on the column 2, and the output end of the lifting unit is connected to the skateboard seat plate 3, which is used to drive the skateboard seat plate 3 to slide up and down along the side wall of the column 2 to adjust the height difference between the skateboard seat plate 3 and the base 1, so that the skateboard seat plate 3 is lowered to the lowest position before installing the workpiece, which is convenient for clamping the workpiece, and does not require workers to lift the workpiece to the installation position for clamping, which can further reduce labor intensity; and, the height of the installation position of the workpiece can be adjusted according to the rotation radius of the long axis, which is suitable for clamping workpieces of different lengths.

[0040] Further, the sliding assembly comprises:

[0041] A guide rail 8, the guide rail 8 is fixedly mounted on the side wall of the column 2 along the vertical direction;

[0042] A slider 9, which is fixedly mounted on one end of the slider base plate 3 close to the guide rail 8, and a U-shaped slide groove 10 is provided on the slider 9, and the U-shaped slide groove 10 is slidably connected to the guide rail 8;

[0043] Two sets of roller pillars 11, the two sets of roller pillars 11 are symmetrically fixedly installed on opposite sides of the pillar 2, and are located on both sides of the skateboard seat plate 3 and are arranged parallel to the guide rail 8;

[0044] A plurality of rolling wheels 12 are respectively arranged at one end of the skateboard seat 3 close to the guide rail 8 and on opposite sides of the column 2. The plurality of rolling wheels 12 are respectively rollingly connected to the side of the roller support 11 away from the skateboard seat 3. Each rolling wheel 12 is rotatably mounted on the skateboard seat 3 through a bracket 26.

[0045] In the above, when the lifting unit drives the skateboard seat 3 to move, the skateboard seat 3 drives the slider 9 to slide along the guide rail 8, and drives the rolling wheel 12 to roll on the roller support 11 through the bracket 26, which can play a guiding and limiting role for the skateboard seat 3.

[0046] In the above, the rolling wheel 12 is a rubber-coated roller, which is used to increase the sliding friction resistance between the rolling wheel 12 and the roller support 11, and to reduce the impact load of the skateboard seat plate 3 during the descent process.

[0047] Furthermore, the lifting unit comprises:

[0048] A lifting hydraulic cylinder 13, the lifting hydraulic cylinder 13 is fixedly mounted on a side of the column 2 away from the skateboard seat plate 3, and the output end of the lifting hydraulic cylinder 13 is arranged upward;

[0049] Two sets of fixed seat plates 14 are fixedly mounted on both sides of the top of the column 2, and rotating shafts 15 are rotatably mounted on both sides of the opposite surfaces of the two sets of fixed seat plates 14, and sprocket wheels 16 are fixedly mounted on the rotating shafts 15, and the central axis of the sprocket wheel 16 is perpendicular to the moving direction of the skateboard seat plate 3;

[0050] The chain 17 is sleeved on the top of the two sets of sprocket wheels 16, and one end of the chain 17 extends to the top of the skateboard seat plate 3 and is connected to the skateboard seat plate 3, and the other end of the chain 17 extends to the opposite side of the skateboard seat plate 3 and is fixedly connected to the output end of the lifting hydraulic cylinder 13.

[0051] In the above, when the output shaft of the lifting hydraulic cylinder 13 is extended, the skateboard seat plate 3 pulls the chain 17 to the side close to the skateboard seat plate 3 under the action of its own gravity, so as to lower the skateboard seat plate 3 to the lowest installation position of the column 2; when the output shaft of the lifting hydraulic cylinder 13 is retracted, the chain 17 is pulled to the side close to the lifting hydraulic cylinder 13, so as to lift the skateboard seat plate 3 to the required rotation height of the workpiece.

[0052] Furthermore, the clamping assembly includes two groups of fixed shaft support seats 18, which are symmetrically mounted on the rotating base plate 6 by bolts, and a plurality of guide shafts 19 are fixedly mounted between the opposite surfaces of the two groups of fixed shaft support seats 18, and two groups of connecting plates 20 are symmetrically mounted on the plurality of guide shafts 19, and V-shaped clamping plates 21 are fixedly mounted on the opposite surfaces of the two groups of connecting plates 20; clamping hydraulic cylinders 22 are respectively mounted on the opposite back surfaces of the two groups of fixed shaft support seats 18, and the output ends of the clamping hydraulic cylinders 22 pass through the fixed shaft support seats 18 and are fixedly connected to the connecting plates 20, and are used to adjust the distance between the two groups of V-shaped clamping plates 21 to clamp and release the workpiece, wherein, before installing the workpiece, the output end of the clamping hydraulic cylinder 22 is controlled to extend to push the two groups of V-shaped clamping plates 21 to move toward the side close to each other to clamp the workpiece, and after the workpiece is installed, the output end of the clamping hydraulic cylinder 22 is controlled to retract to pull the two groups of V-shaped clamping plates 21 to move toward the side away from each other to release the workpiece.

[0053] Furthermore, in order to reduce the wear between the fixed frame and the guide shaft 19 and ensure the installation accuracy, a linear bearing 23 is arranged between the fixed frame and each guide shaft 19, wherein the linear bearing 23 is sleeved and installed on the guide shaft 19, and the connecting plate 20 is fixedly connected to the outer periphery of the linear bearing 23.

[0054] Furthermore, a mounting platform 24 is installed at the top of the base 1 just below the clamping assembly, so that when the workpiece is installed in a vertical direction, the bottom end of the workpiece can be supported and fixed by the mounting platform 24 .

[0055] Furthermore, a gasket 25 is installed on the clamping surface of the V-shaped clamp 21, which is made of hard nylon pad to prevent the clamping surface of the V-shaped clamp 21 from being worn after the V-shaped clamp 21 clamps the workpiece for a long time, thereby affecting the clamping accuracy. When the gasket 25 is excessively worn, only the gasket 25 needs to be replaced, thereby reducing the replacement cost of the tooling fixture.

[0056] It should be noted that in this embodiment, the lifting hydraulic cylinder 13 and the clamping hydraulic cylinder 22 are configured with a micro hydraulic station for providing output power to the lifting hydraulic cylinder 13 and the clamping hydraulic cylinder 22. The micro hydraulic station can be installed on one side of the column 2 for use.

[0057] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. Automatic turning frame, including a fixed frame, characterized in that: A flip mechanism is installed on one side of the fixing frame, and two groups of clamping assemblies are symmetrically installed on one side of the flip mechanism away from the fixing frame, and the two groups of clamping assemblies are used to clamp the workpiece, wherein the flip mechanism includes: A skateboard seat plate (3), wherein the skateboard seat plate (3) is mounted on the fixing frame; A rotary driver (4), wherein the fixed portion of the rotary driver (4) is mounted on an end of the skateboard seat plate (3) away from the fixed frame, and a positioning ring (5) is provided on the rotating portion of the rotary driver (4); A revolving base plate (6), one end of which is provided with a hydraulic rotating joint (7), the hydraulic rotating joint (7) being inserted into the positioning ring (5), and the revolving base plate (6) being connected to the rotating part of the revolving drive (4), the clamping assembly being installed at the other end of the revolving base plate (6), and the revolving drive (4) being used for driving the revolving base plate (6) to rotate, thereby realizing automatic flipping of the workpiece.

2. The automatic turning frame according to claim 1, characterized in that: The fixing frame comprises a base (1) and a column (2), wherein the column (2) is mounted on one side of the top end of the base (1), and the skateboard seat plate (3) is mounted on the side wall of the column (2) through a sliding assembly and is located directly above the base (1). A lifting unit is mounted on the column (2), and the output end of the lifting unit is connected to the skateboard seat plate (3) for driving the skateboard seat plate (3) to slide up and down along the side wall of the column (2) to adjust the height difference between the skateboard seat plate (3) and the base (1).

3. The automatic turning frame according to claim 2, characterized in that: The sliding assembly comprises: A guide rail (8), wherein the guide rail (8) is mounted on the side wall of the column (2) in a vertical direction; A slider (9), the slider (9) being mounted on one end of the slider base plate (3) close to the guide rail (8), the slider (9) being provided with a U-shaped slide groove (10), the U-shaped slide groove (10) being slidably connected to the guide rail (8); Two groups of roller pillars (11), the two groups of roller pillars (11) are symmetrically installed on opposite sides of the pillar (2), and are located on both sides of the skateboard seat plate (3) and are arranged parallel to the guide rail (8); A plurality of rolling wheels (12) are respectively arranged at one end of the skateboard seat (3) close to the guide rail (8) and on opposite sides of the column (2); the plurality of rolling wheels (12) are respectively connected in a rolling manner to the side of the roller support (11) away from the skateboard seat (3); and each of the rolling wheels (12) is respectively mounted on the skateboard seat (3) via a bracket (26).

4. The automatic turning frame according to claim 2, characterized in that: The lifting unit comprises: A lifting hydraulic cylinder (13), the lifting hydraulic cylinder (13) being installed on a side of the column (2) away from the skateboard seat plate (3), and the output end of the lifting hydraulic cylinder (13) being arranged upward; Two groups of fixed seat plates (14), the two groups of fixed seat plates (14) are installed on both sides of the top of the column (2), and the two sides of the opposite surfaces of the two groups of fixed seat plates (14) are respectively installed with rotating shafts (15), and the rotating shafts (15) are installed with sprockets (16), and the central axis of the sprockets (16) is perpendicular to the moving direction of the skateboard seat plate (3); A chain (17), wherein the chain (17) is sleeved on the top ends of the two groups of sprocket wheels (16), and one end of the chain (17) extends to the top end of the skateboard seat plate (3) and is connected to the skateboard seat plate (3), and the other end of the chain (17) extends to the opposite side of the skateboard seat plate (3) and is connected to the output end of the lifting hydraulic cylinder (13).

5. The automatic turning frame according to claim 2, characterized in that: The clamping assembly comprises: Two groups of fixed shaft support seats (18), the two groups of fixed shaft support seats (18) are symmetrically mounted on the rotary base plate (6), a plurality of guide shafts (19) are mounted between opposite surfaces of the two groups of fixed shaft support seats (18), two groups of connecting plates (20) are symmetrically mounted on the opposite surfaces of the two groups of connecting plates (20), and V-shaped clamping plates (21) are respectively mounted on opposite surfaces of the two groups of connecting plates (20); Clamping hydraulic cylinders (22) are respectively installed on the opposite back surfaces of the two groups of fixed shaft support seats (18), and the output ends of the clamping hydraulic cylinders (22) penetrate the fixed shaft support seats (18) and are connected to the connecting plate (20).

6. The automatic turning frame according to claim 5, characterized in that: A linear bearing (23) is provided between the fixing frame and each of the guide shafts (19); the linear bearing (23) is sleeved and mounted on the guide shaft (19); and the connecting plate (20) is fixedly connected to the outer periphery of the linear bearing (23).

7. The automatic turning frame according to claim 2, characterized in that: A mounting platform (24) is provided at the top end of the base (1) and is located directly below the clamping assembly.

8. The automatic turning frame according to claim 5, characterized in that: A gasket (25) is installed on the clamping surface of the V-shaped clamping plate (21).

Images