Cylinder-driven Rotating Device for Automobile Welding Production Suspenders

Abstract

The present invention relates to a cylinder-driven rotating device for a lifting tool in automotive welding production. The device includes a fixed frame, a rotating shaft assembly, a rotating frame, a driving telescopic cylinder, a cylinder mounting support, a position-limiting dead stop assembly, an adjusting shim, and a cylinder seat on the rotating frame. The driving telescopic cylinder adopts a cylinder with a middle trunnion. The trunnion is installed on the cylinder mounting support, and the cylinder block mounting support is screwed to the fixed frame. An adjusting shim is provided between the fixed frame and the cylinder mounting support. The cylinder head of the driving telescopic cylinder is connected to the cylinder seat on the rotating frame, and the cylinder seat on the rotating frame is screwed to the rotating frame. The rotating shaft assembly is connected between the fixed frame and the rotating frame to enable the rotating frame and the equipment to be lifted and retrieved to rotate 90° along the rotating shaft. The position-limiting dead stop assembly is used to ensure that the cylinder reaches a specified position after extending and driving the rotation, so as to ensure an accurate in-place angle and effectively avoid the jamming phenomenon of workpiece picking and placing.

Description

Technical Field

[0001] The present invention relates to a hoist rotating device, and particularly to a cylinder-driven rotating device for a hoist in automobile welding production. Background Art

[0002] In the hoist system of large-scale automatic automobile welding production lines, the hoist equipment is the most important and widely used transportation method. How the hoist can quickly and conveniently lift the corresponding equipment and place it in the planned position has always been an urgent technical problem in the hoist system.

[0003] Currently, most of the hoist systems of domestic large-scale automatic automobile welding production lines do not have the function of rotating to pick up and place parts, or can only use manual operation to rotate. Adding manual rotation to the short-stroke lifting action often requires a large space, is not convenient for installation and maintenance, and manual operation has low production efficiency and is prone to production accidents, which will cause huge losses.

[0004] Therefore, providing a cylinder-driven rotating device for a hoist in automobile welding production with a simple structure, reasonable design, and remarkable application effect has become one of the urgent problems for those skilled in the art to solve. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above deficiencies and provide a cylinder-driven rotating device for a hoist in automobile welding production with reasonable design, simple structure, convenient installation, and easy operation, maximizing the operation efficiency and economic benefits of the equipment.

[0006] The technical solution adopted by the present invention to achieve the above purpose is: a cylinder-driven rotating device for a hoist in automobile welding production, characterized in that the device includes a fixed frame, a rotating shaft assembly, a rotating frame, a driving telescopic cylinder, a cylinder mounting seat, a position dead stop assembly, an adjusting gasket, and a cylinder seat on the rotating frame;

[0007] The rotating shaft assembly includes a shaft, a thrust ball bearing, a fixed-end support, a deep groove ball bearing, a sleeve A, a sleeve B, a key, and a round nut; wherein the fixed-end support is screwed and fixed on the fixed bracket, the shaft is fixed in the radial position through the thrust ball bearing, the sleeve A, and the sleeve B, and at the same time, rotation is realized through the deep groove ball bearing connected between the shaft and the fixed-end support. The shaft and the rotating frame are fixedly connected through a key, and the round nut is screwed onto the thread of the shaft to fix the radial position of the rotating frame on the shaft;

[0008] The in-place dead stop assembly includes dead stop block A, dead stop block B, dead stop block C, and dead stop block D; there are a total of 4 in-place dead stop blocks, that is, one set is provided before and after rotation; among them, dead stop block A and dead stop block C are installed on the rotating frame; dead stop block B and dead stop block D are installed on the fixed frame; dead stop block A and dead stop block B are used to define the position where the driving telescopic cylinder retracts; dead stop block C and dead stop block D are used to define the position where the driving telescopic cylinder extends;

[0009] The driving telescopic cylinder is installed on the cylinder mounting seat, and the cylinder mounting seat is fixed to the fixed frame; the cylinder head at the other end of the driving telescopic cylinder is connected to the cylinder seat on the rotating frame, and the cylinder seat on the rotating frame is fixed to the rotating frame, thus forming the power driving device of the rotating device; the rotating shaft assembly is connected between the fixed frame and the rotating frame, and rotates 90° along the rotating shaft in cooperation with the rotating frame and the rotating frame.

[0010] The key to this cylinder-driven rotating device is the setting of the rotating shaft assembly, that is, the telescopic movement of the driving telescopic cylinder drives the jib on the rotating frame to rotate along the rotating shaft to complete the rotating action of the lifting device.

[0011] The beneficial effects of the present invention are as follows: This device abandons the common forms in lifting equipment that cannot provide rotation or can only use complex manual operations for rotation, and instead uses a telescopic cylinder to drive the jib on the rotating frame to rotate along the rotating shaft to complete the rotating action of the lifting equipment. Among them, the way of driving rotation by the telescopic cylinder not only simplifies the installation structure of the equipment but also greatly simplifies the complexity of operation. The simpler structure and reliable performance enable this device to meet the functional requirements of accurate rotation for the vast majority of equipment while lifting workpieces.

[0012] This device can be made into various rotation angles according to on-site needs, and only different specifications of telescopic cylinders need to be replaced, which is very convenient in application. The simple and reasonable structure design can greatly save the commissioning and operation time and effectively reduce the production cost. The present invention can be widely used in the lifting tool system of large-scale automotive automated welding production lines and can meet the angular placement method of workpiece picking and placing by the lifting tool equipment. Cylinder-driven rotation can save the working time of equipment transfer, reduce the labor load of workers, fundamentally solve the long-standing technical problems in the lifting tool equipment of automotive production lines, and significantly improve labor productivity and production safety.

[0013] In short, this device has a simple structure, reasonable design, safe and reliable performance, is easy to install, easy to replace, and runs smoothly, greatly meeting the use requirements of completing the rotation and placing of the lifting tool after lifting the equipment at a certain angle in a limited space; it is convenient for assembly, transportation, and installation, and is easy to maintain; it can be widely applied to various equipment mechanisms that require rotation operations in the lifting tool system. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a schematic cross-sectional structure diagram when the driving telescopic cylinder of the present invention extends;

[0016] Figure 3 is a schematic cross-sectional structure diagram when the driving telescopic cylinder of the present invention retracts;

[0017] Figure 4 is a schematic cross-sectional structure diagram of the rotating shaft assembly (i.e., Figure 1 along the A-A direction) of the present invention;

[0018] Figure 5 is a schematic cross-sectional structure diagram of the in-place dead stop assembly of the present invention;

[0019] Figure 6 is a schematic three-dimensional structure diagram of the present invention;

[0020] In the figure: 1 is a fixed frame; 2 is a rotating shaft assembly, 2-1 is a shaft, 2-2 is a thrust ball bearing, 2-3 is a fixed end support, 2-4 is a deep groove ball bearing, 2-5 is a bushing A, 2-6 is a bushing B, 2-7 is a key, 2-8 is a round nut; 3 is a rotating frame; 4 is a driving telescopic cylinder; 5 is a cylinder mounting support; 6 is an in-place dead stop assembly, 6-1 is a dead stop block A, 6-2 is a dead stop block B, 6-3 is a dead stop block C, 6-4 is a dead stop block D; 7 is an adjusting shim; 8 is a cylinder seat on the rotating frame. Specific Embodiments

[0021] The following details the specific embodiments, structures, and features provided according to the present invention in conjunction with the accompanying drawings and preferred embodiments:

[0022] As Figures 1 - 6 shown, a cylinder-driven rotating device for an automotive welding production sling includes a fixed frame 1, a rotating shaft assembly 2, a rotating frame 3, a driving telescopic cylinder 4, a cylinder mounting support 5, an in-place dead stop assembly 6, an adjusting shim 7, and a cylinder seat 8 on the rotating frame.

[0023] The rotating shaft assembly 2 includes a shaft 2-1, a thrust ball bearing 2-2, a fixed end support 2-3, a deep groove ball bearing 2-4, a bushing A 2-5, a bushing B 2-6, a key 2-7, and a round nut 2-8; wherein the fixed end support 2-3 is screwed and fixed on the fixed bracket 1, the shaft 2-1 is fixed in the radial position through the thrust ball bearing 2-2 and the bushings A 2-5 and B 2-6, and at the same time rotates through the deep groove ball bearing 2-4 connected between the shaft 2-1 and the fixed end support 2-3. The shaft 2-1 and the rotating frame 3 are fixedly connected through the key 2-7, and the round nut 2-8 is screwed onto the thread of the shaft 2-1 to fix the radial position of the rotating frame 3 on the shaft 2-1;

[0024] The in-place dead-stop assembly 6 includes a dead-stop block A 6-1, a dead-stop block B 6-2, a dead-stop block C 6-3, and a dead-stop block D 6-4; a total of 4 in-place dead-stop blocks are provided, that is, one set is provided before and after rotation; among them, the dead-stop block A 6-1 and the dead-stop block C 6-3 are installed on the rotating frame 3; the dead-stop block B 6-2 and the dead-stop block D 6-4 are installed on the fixed frame 1. The dead-stop block A 6-1 and the dead-stop block B 6-2 are used to ensure the in-place position when the driving telescopic cylinder retracts; the dead-stop block C 6-3 and the dead-stop block D 6-4 ensure the in-place position when the driving telescopic cylinder extends. This assembly can be used to ensure that the rotating device has an accurate in-place angle before and after rotation by the cylinder, and can effectively avoid the problem of too large angle deviation after in-place.

[0025] The driving telescopic cylinder 4 adopts a cylinder with a middle trunnion form and is installed on the cylinder mounting support 5 by using the trunnion mounting method. The cylinder mounting support 5 is fixed to the fixed frame 1, and an adjusting gasket 7 is used between the fixed frame 1 and the cylinder mounting support 5 to adjust the installation position of the telescopic cylinder. The cylinder head at the other end of the driving telescopic cylinder 4 is connected to the cylinder seat 8 on the rotating frame, and the cylinder seat 8 on the rotating frame is fixed to the rotating frame 3. The power drive of the rotating device is completed by the telescopic movement of the driving telescopic cylinder 4, that is, the power drive mechanism of the rotating device is formed hereby. The rotating shaft assembly 2 is connected between the fixed frame 1 and the rotating frame 3, thereby realizing the 90° rotation of the rotating frame 3 and the equipment to be lifted on the rotating frame 3 along the rotating axis.

[0026] The structural features and working principle of this device are as follows:

[0027] One end of the rotating shaft assembly 2 in this device is fixed to the rotating frame 3 by a key 2-7, and the other end is fixed to the fixed frame 1 by a fixed-end support 2-3. After the lifting tool lifts the equipment and reaches the specified rotating position, the telescopic end of the driving telescopic cylinder 4 fixed to the fixed frame 1 through the cylinder mounting support 5 opens and extends, driving the rotating frame 3 to perform a rotating action along the rotating shaft assembly 2. When controlling the driving telescopic cylinder 4 to retract, the rotating frame 3 and the equipment to be lifted and rotated thereon can be driven to rotate back to the original position. Therefore, by controlling the telescopic action of the driving telescopic cylinder, the rotating function of the device can be realized.

[0028] The device can be made into a sling device with a 90° rotation angle according to on-site requirements. The driving telescopic cylinder only needs to adopt a cylinder of the model SMC: MDBT 63-250-XC14, and the stroke is 250 mm. It is very convenient to use. The simple and reasonable structural design can greatly save the commissioning and operation time and effectively reduce the production cost. The present invention can be widely used in the sling system of the large-scale automatic welding production line of automobiles and can meet the angular placement mode of taking and placing parts by the sling equipment. The driving telescopic cylinder drives the rotation, which can save the working time of equipment transfer, reduce the labor intensity of workers, fundamentally solve the long-standing technical problems in the sling equipment of the automobile production line, and significantly improve the labor productivity and production safety.

[0029] The above detailed description of the cylinder-driven rotating device for the sling in automobile welding production with reference to the embodiments is illustrative rather than restrictive; therefore, changes and modifications within the general concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A cylinder-driven rotary device for a lifting tool in automotive welding production, characterized in that The device includes a fixed frame, a rotating shaft assembly, a rotating frame, a driving telescopic cylinder, a cylinder mounting support, a position-limiting stop assembly, an adjusting shim, and a cylinder seat on the rotating frame; The rotating shaft assembly includes a shaft, a thrust ball bearing, a fixed-end support, a deep groove ball bearing, bushing A, bushing B, a key, and a round nut; the fixed-end support is screwed and fixed on the fixed bracket, the shaft is fixed in the radial position through the thrust ball bearing, bushing A, and bushing B, and at the same time, rotation is achieved through the deep groove ball bearing connected between the shaft and the fixed-end support. The shaft and the rotating frame are fixedly connected through a key, and the round nut is screwed onto the thread on the shaft to fix the radial position of the rotating frame on the shaft; The position-limiting stop assembly includes stop block A, stop block B, stop block C, and stop block D; a total of 4 position-limiting stop blocks are provided, that is, one set is provided before and after rotation; among them, stop block A and stop block C are installed on the rotating frame; stop block B and stop block D are installed on the fixed frame; stop block A and stop block B are used to limit the retracted position of the driving telescopic cylinder; stop block C and stop block D are used to limit the extended position of the driving telescopic cylinder; The driving telescopic cylinder is installed on the cylinder mounting support, and the cylinder mounting support is fixed to the fixed frame; the cylinder head at the other end of the driving telescopic cylinder is connected to the cylinder seat on the rotating frame and fixes the cylinder seat on the rotating frame to the rotating frame, thus forming the power driving device of the rotating device; the rotating shaft assembly is connected between the fixed frame and the rotating frame and rotates at a 90° angle along the rotating shaft in cooperation with the rotating frame and the rotating frame; The driving telescopic cylinder adopts a middle trunnion type cylinder, and the trunnion is installed on the cylinder mounting support; An adjusting shim for adjusting the installation position of the driving telescopic cylinder is provided between the fixed frame and the cylinder mounting support.

2. The cylinder drive rotary device for the lifting tool in automobile welding production according to claim 1, characterized in that The driving telescopic cylinder adopts the model SMC: MDBT 63-250-XC14.

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