Pure mechanical manual turnover device

Abstract

The utility model belongs to the technical field of turnover machinery, and particularly relates to a purely mechanical manual turnover device which comprises a fixed support, a mounting frame is arranged on one side of the fixed support, a hand-cranking speed reducer is mounted on the mounting frame, two bearing seats are symmetrically mounted on the left side and the right side of the fixed support, and a hand-cranking speed reducer is mounted on the hand-cranking speed reducer. Rotating shafts are rotationally mounted in the two bearing seats, a rotating frame is fixedly connected between the two rotating shafts, and one rotating shaft is connected with an output shaft of a hand-cranking speed reducer; according to the utility model, the rotating frame can be driven to rotate in a manual driving manner, so that a workpiece is driven to rotate, meanwhile, after the workpiece is erected, the end surface of the workpiece can be coated under the condition that the workpiece is not moved, and after the coating is dried and solidified, the hand-cranking speed reducer is reversely rotated, so that the other end surface of the workpiece is positioned above, and the workpiece is continuously coated. Compared with the prior art that the workpiece is overturned through a chain block, the workpiece overturning efficiency is greatly improved, and time is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of turnover machinery, and in particular relates to a purely mechanical manual turnover device. Background Art

[0002] During the manufacturing process of ammunition barrels, both ends of the barrel need to be painted. Due to the special nature of the workpiece, it is necessary to ensure that the production environment is free of static sparks. Therefore, the barrel can only be hoisted and painted manually. In the existing technology, the manual operation method is to flip the barrel by crane. The operation is complicated and the labor intensity is high. In addition, the barrel needs to be firmly tied during the flipping process, which poses certain safety risks. Utility Model Content

[0003] In view of the above problems, the utility model provides a purely mechanical manual turning device.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A purely mechanical manual turning device comprises a fixed bracket, a mounting bracket provided on one side of the fixed bracket, a hand-crank reducer mounted on the mounting bracket, two bearing seats symmetrically mounted on the left and right sides of the fixed bracket, rotating shafts rotatably mounted in the two bearing seats, a rotating bracket fixedly connected between the two rotating shafts, and one of the rotating shafts being connected to the output shaft of the hand-crank reducer;

[0006] The rotating frame includes multiple fixed tubes, a middle lower clamp is commonly fixed in the middle of the multiple fixed tubes, the rotating shaft is fixedly connected to the middle lower clamp, the upper end of the middle lower clamp is movably connected to the middle upper clamp by a No. 1 bolt, end clamps are provided at the front and rear of the multiple fixed tubes, connecting studs are provided at both ends of the end clamps, locking nuts are threadedly connected to the connecting studs, and an end support plate is clamped between the locking nut and the workpiece for receiving the workpiece.

[0007] Furthermore, the hand-crank reducer is a worm gear reducer, and an anti-sway friction disk is provided between the output shaft and the rotating shaft of the hand-crank reducer.

[0008] Furthermore, the anti-sway friction disc includes a fixing frame, a fixing disc is installed on the fixing frame, an intermediate disc is provided on the side of the fixing disc away from the hand-cranked reducer, a No. 2 bolt is fixedly provided on the intermediate disc, the No. 2 bolt passes through the fixing disc and is threadedly connected to an adjusting nut, a spring is also sleeved on the No. 2 bolt, the spring is located between the fixing disc and the intermediate disc, a plurality of friction pads are fixedly provided on the other side of the intermediate disc, a friction disc is provided on the side of the friction pad away from the intermediate disc, and both ends of the friction disc are respectively connected to the rotating shaft and the output shaft of the hand-cranked reducer.

[0009] Furthermore, rubber pads are provided at the locations where the middle lower clamp, the middle upper clamp and the end clamps contact the workpiece.

[0010] Furthermore, the connecting stud is horizontally rotatably mounted on the end clamp, so that the connecting stud can be rotated and folded after the end support plate is opened, thereby facilitating the painting of the end of the workpiece.

[0011] Furthermore, an elastic pipe clamp is provided on the total lower clamp for clamping the connecting stud.

[0012] Furthermore, reinforcing ribs are provided on the end support plates to reinforce the end support plates.

[0013] Furthermore, universal wheels are installed at the bottom of the fixing bracket to facilitate the movement of the fixing bracket.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model can drive the rotating frame to rotate by manual drive, thereby driving the workpiece to rotate. At the same time, after the workpiece is erected, the end face of the workpiece is painted. After the paint is dried, the hand-cranked reducer is rotated in the opposite direction to make the other end face of the workpiece located at the top, and then the paint is painted again. Compared with the original method of turning the workpiece by hoisting, the workpiece turning efficiency and operation safety are greatly improved, and time is saved.

[0016] The utility model aims to solve the problem of workpiece shaking during reverse rotation due to the existence of tooth side clearance in the worm gear reducer. An anti-sway friction plate is added. By adding the anti-sway friction plate, resistance is applied to the rotation of the rotating shaft. The increased resistance overcomes the sudden change in force when the worm gear engages with the tooth side clearance, thereby overcoming the problem of workpiece shaking caused by the reverse rotation of the worm gear reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the fixing bracket of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the rotating frame of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the anti-sway friction disc of the utility model;

[0021] In the figure, there are fixed bracket 1, mounting bracket 2, hand-crank reducer 3, bearing seat 4, rotating shaft 5, rotating bracket 6, anti-sway friction disc 7, universal wheel 8, fixed tube 601, middle lower clamp 602, middle upper clamp 603, end clamp 604, connecting stud 605, locking nut 606, end support disc 607, fixed bracket 701, fixed disc 702, intermediate disc 703, No. 2 bolt 704, adjusting nut 705, spring 706, friction gasket 707, and friction disc 708. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical solution of the present invention, the present invention will be further described below through embodiments.

[0023] like Figures 1 to 4 As shown, a purely mechanical manual turning device comprises a fixed bracket 1, a universal wheel 8 is installed at the bottom of the fixed bracket 1 to facilitate the movement of the fixed bracket 1, a mounting bracket 2 is provided on one side of the fixed bracket 1, a hand-crank reducer 3 is installed on the mounting bracket 2, two bearing seats 4 are symmetrically installed on the left and right sides of the fixed bracket 1, a rotating shaft 5 is rotatably installed in the two bearing seats 4, a rotating bracket 6 is fixedly connected between the two rotating shafts 5, one of the rotating shafts 5 is connected to the output shaft of the hand-crank reducer 3, the hand-crank reducer 3 is a worm gear reducer, and an anti-sway friction disk 7 is provided between the output shaft of the hand-crank reducer 3 and the rotating shaft 5;

[0024] The rotating frame 6 includes a plurality of fixed tubes 601, a middle lower clamp 602 is fixed in the middle of the plurality of fixed tubes 601, the rotating shaft 5 is fixedly connected to the middle lower clamp 602, the upper end of the middle lower clamp 602 is dynamically connected to the middle upper clamp 603 by a No. 1 bolt, and end clamps 604 are provided at the front and rear of the plurality of fixed tubes 601, and connecting studs 605 are provided at both ends of the end clamps 604. The connecting studs 605 are horizontally rotatably installed on the end clamps 604 so that the connecting studs can be opened after the end support plate 607 is opened. The connecting stud 605 is rotated and folded to facilitate spraying of the end of the workpiece. An elastic pipe clamp 609 is provided on the total lower clamp for clamping the connecting stud 605. A locking nut 606 is threadedly connected to the connecting stud 605. An end support plate 607 is clamped between the locking nut 606 and the workpiece for receiving the workpiece. A reinforcing rib 610 is provided on the end support plate 607 for reinforcing the end support plate 607. Rubber pads 608 are provided at the positions where the middle lower clamp 602, the middle upper clamp 603 and the end clamp 604 contact the workpiece.

[0025] The anti-sway friction disc 7 includes a fixing frame 701, a fixing disc 702 is installed on the fixing frame 701, an intermediate disc 703 is provided on the side of the fixing disc 702 away from the hand-cranked reducer 3, a No. 2 bolt 704 is fixedly provided on the intermediate disc 703, the No. 2 bolt 704 passes through the fixing disc 702 and is threadedly connected to an adjusting nut 705, a spring 706 is also sleeved on the No. 2 bolt 704, the spring 706 is located between the fixing disc 702 and the intermediate disc 703, a plurality of friction pads 707 are fixedly provided on the other side of the intermediate disc 703, a friction disc 708 is provided on the side of the friction pad 707 away from the intermediate disc 703, and the two ends of the friction disc 708 are respectively connected to the rotating shaft 5 and the output shaft of the hand-cranked reducer 3.

[0026] The above shows and describes the main features and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be encompassed within the present invention.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A purely mechanical manual turning device, characterized by: It comprises a fixed bracket (1), a mounting bracket (2) is provided on one side of the fixed bracket (1), a hand-cranked reducer (3) is mounted on the mounting bracket (2), two bearing seats (4) are symmetrically mounted on the left and right sides of the fixed bracket (1), a rotating shaft (5) is rotatably mounted in the two bearing seats (4), a rotating bracket (6) is fixedly connected between the two rotating shafts (5), and one of the rotating shafts (5) is connected to the output shaft of the hand-cranked reducer (3); The rotating frame (6) comprises a plurality of fixed tubes (601), a middle lower hoop (602) is commonly fixed in the middle of the plurality of fixed tubes (601), the rotating shaft (5) is fixedly connected to the middle lower hoop (602), a middle upper hoop (603) is movably connected to the upper end of the middle lower hoop (602) via a No. 1 bolt, end hoops (604) are provided at the front and rear of the plurality of fixed tubes (601), connecting studs (605) are provided at both ends of the end hoop (604), a locking nut (606) is threadedly connected to the connecting stud (605), and an end support plate (607) is clamped between the locking nut (606) and the workpiece for receiving the workpiece.

2. A purely mechanical manual turning device according to claim 1, characterized in that: The hand-cranked reducer (3) is a worm gear reducer, and an anti-sway friction disc (7) is provided between the output shaft of the hand-cranked reducer (3) and the rotating shaft (5).

3. A purely mechanical manual turning device according to claim 2, characterized in that: The anti-sway friction disc (7) includes a fixing frame (701), a fixing disc (702) is mounted on the fixing frame (701), an intermediate disc (703) is provided on the side of the fixing disc (702) away from the hand-cranked reducer (3), a No. 2 bolt (704) is fixedly provided on the intermediate disc (703), the No. 2 bolt (704) passes through the fixing disc (702) and is threadedly connected to an adjusting nut (705), a spring (706) is further sleeved on the No. 2 bolt (704), the spring (706) is located between the fixing disc (702) and the intermediate disc (703), a plurality of friction pads (707) are fixedly provided on the other side of the intermediate disc (703), a friction disc (708) is provided on the side of the friction pad (707) away from the intermediate disc (703), and two ends of the friction disc (708) are respectively connected to the rotating shaft (5) and the output shaft of the hand-cranked reducer (3).

4. A purely mechanical manual turning device according to claim 1, characterized in that: Rubber pads (608) are provided at the locations where the middle lower hoop (602), the middle upper hoop (603) and the end hoop (604) contact the workpiece.

5. A purely mechanical manual turning device according to claim 1, characterized in that: The connecting stud (605) is horizontally rotatably mounted on the end hoop (604), so that the connecting stud (605) can be rotated and folded after the end support plate (607) is opened, thereby facilitating the spraying of the end of the workpiece.

6. A purely mechanical manual turning device according to claim 5, characterized in that: An elastic pipe clamp (609) is provided on the middle lower hoop (602) for clamping the connecting stud (605).

7. A purely mechanical manual turning device according to claim 1, characterized in that: A reinforcing rib (610) is provided on the end support disc (607) for reinforcing the end support disc (607).

8. A purely mechanical manual turning device according to claim 1, characterized in that: Universal wheels (8) are installed at the bottom of the fixed bracket (1) to facilitate the movement of the fixed bracket (1).

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