CN216098821U

CN216098821U - Liftable ball platform

Info

Publication number: CN216098821U
Application number: CN202122449484.6U
Authority: CN
Inventors: 罗毅; 许寄桥; 李辉杰; 董枫; 梁感; 秦亮; 王江; 安学玲; 田建坡; 王盈; 刘翰林; 姜石; 张羽; 储婷婷; 马林
Original assignee: Tiandi Shanghai Mining Equipment Technology Co Ltd; China Coal Technology and Engineering Group Corp; China Coal Technology and Engineering Group Shanghai Co Ltd
Current assignee: Tiandi Shanghai Mining Equipment Technology Co Ltd; China Coal Technology and Engineering Group Corp; China Coal Technology and Engineering Group Shanghai Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-03-22
Anticipated expiration: 2031-10-12

Abstract

The utility model relates to a lifting ball platform which comprises a frame, a working platform arranged on the top surface of the frame, a lifting mechanism and a rotating mechanism, wherein the lifting mechanism and the rotating mechanism are arranged below the working platform, the lifting mechanism comprises a guide seat, balls and a support, the guide seat is arranged on the bottom surface of the working platform, guide holes in the guide seat correspond to limiting holes in the working platform in a one-to-one and coaxial mode, the balls are arranged on the support, the balls correspond to the guide holes in a one-to-one mode, the support is located below the guide seat, the rotating mechanism comprises an optical axis, a cam and a handle, two ends of the optical axis are rotatably connected to the frame, the cam is fixed on the optical axis, the support is supported on the cam, and the handle is fixed at one end of the optical axis. The utility model can realize the rotation and turnover actions of the frequency converter, replace the crane lifting operation, save the space and improve the turnover efficiency.

Description

Liftable ball platform

Technical Field

The utility model relates to a lifting ball platform which can be used for assembling a heavy water-cooling frequency converter used for a high-power coal mining machine and belongs to the field of assembly tool machinery.

Background

The water-cooled frequency converter used by the coal mining machine has the characteristics of regular shape and heavy weight, the assembly process adopts a process technology from bottom to top and from inside to outside, the horizontal rotation action is required to be completed according to the installation requirements of components in the assembly process, after the assembly is completed, the finished product of the frequency converter needs to be circulated, debugged and installed in an electric cabinet of the coal mining machine, travelling cranes are required to participate in the hoisting in the transfer processes, a large number of factory hoisting personnel and travelling cranes are occupied, and the circulation efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting ball platform which is used for realizing the rotation and turnover actions of a frequency converter during and after the assembly of the frequency converter, replacing the lifting operation of a travelling crane, saving the space and improving the turnover efficiency.

The main technical scheme of the utility model is as follows:

the utility model provides a liftable ball platform, includes the frame, installs work platform on the frame top surface and installs elevating system and rotary mechanism in work platform below, elevating system includes guide holder, ball and support, the guide holder is installed on work platform's bottom surface, and each spacing hole one-to-one on each guide hole on the guide holder and the work platform and coaxial, and the ball is installed on the support, ball and guide hole one-to-one, and the support is located the below of guide holder, rotary mechanism includes optical axis, cam and handle, and the both ends of optical axis are rotated and are connected on the frame, the cam cover is established and is fixed on the optical axis, and the cam adopts eccentric cylinder structure, the support supports on the cam, the handle is fixed in the one end of optical axis.

The front end and the rear end of the optical axis are respectively provided with a shaft sleeve with a radial boss, the shaft sleeves are positioned on the inner side of the frame, and the optical axis is axially limited relative to the frame through the shaft sleeves.

The front end and the rear end of the optical axis are respectively and fixedly provided with one cam, and the two shaft sleeves on the same optical axis are positioned on the outer sides of the two cams.

The optical axes are parallel to each other.

The guide holder is the slender strip, has a plurality ofly, and controls and set up side by side the interval, is equipped with a plurality ofly along the fore-and-aft direction interval on every guide holder the guiding hole.

The lifting mechanism further comprises a sliding plate, the sliding plate is a flat plate fixed below the support and used for lifting the support, and the sliding plate is in contact with the four cams to form a four-point supporting structure.

The frame is including dismantling fixed connection's preceding curb plate, posterior lateral plate, left side board and right side board, both ends are in the mated shaft hole of swivelling joint on preceding curb plate and posterior lateral plate respectively around the optical axis.

The working platform is characterized in that a locking mechanism is further arranged below the working platform and comprises limiting blocks and connecting rods, the limiting blocks are L-shaped, one end of each limiting block, which is also L-shaped, is sleeved and fixed on the optical axis, the limiting blocks correspond to the cams one to one, the two limiting blocks on the same optical axis are positioned on the inner sides of the two cams, one connecting rod is respectively connected between the limiting blocks at the front parts and the limiting blocks at the rear parts of the left optical axis and the right optical axis, the left end part and the right end part of each connecting rod are hinged with the corresponding limiting blocks, the hinged point is positioned at the other end of the L-shaped, the lower parts of the limiting blocks are provided with notches, the two ends of each connecting rod are positioned at the notches, the top eaves of the notches are planes, when the support is at a lower position, the top eaves are in contact with the top surfaces of the connecting rods to form interference, when the support is at a highest position, the left side surfaces or the right side surfaces of the limiting blocks are in contact with the top surfaces of the connecting rods to form interference, when the top eaves and the top surface of connecting rod are in the parallel state, keep the clearance between the two, connect the breach of two stoppers at same connecting rod both ends and arrange in tandem.

The top eaves are perpendicular to the left side and the right side of the limiting block.

The handle has one, and the handle is fixed in the front end or the rear end of one of optical axis, and is located the outside of frame.

The utility model has the beneficial effects that:

by adopting the utility model, the assembled frequency converter positioned on the working platform can be manually and rapidly rotated and moved on the premise of not using crane lifting operation, and the turnover efficiency of the heavy frequency converter for the coal mining machine in the production process is improved.

Because the travelling crane does not need to be used for participating in the hoisting and transferring of the frequency converter, the occupation of hoisting personnel and the travelling crane can be avoided or reduced.

Drawings

FIG. 1 is an exploded view of one embodiment of the present invention;

FIG. 2 is a schematic structural view of one embodiment of the locking mechanism;

fig. 3 is a schematic structural diagram of an embodiment of the limiting block.

Reference numerals: 1. a working platform; 2. a guide seat; 3. a ball bearing; 4. a support; 5. a sliding plate; 6. a handle; 7. a shaft sleeve; 8. a cam; 9. a connecting rod; 91. a top surface; 10. a limiting block; 101. a top eaves; 102. left and right side faces; 11. an optical axis; 12. a left and right side plate; 13. front and rear side plates; 14. a shaft hole; 15. a guide hole; 16. a limiting hole; 17. a gap.

Detailed Description

The utility model discloses a lifting ball platform, which comprises a frame, a working platform 1 arranged on the top surface of the frame, and a lifting mechanism and a rotating mechanism arranged below the working platform, as shown in figures 1-3. Elevating system includes guide holder 2, ball 3 and support 4, the guide holder is installed on work platform's bottom surface, and each guiding hole 15 on the guide holder and each spacing hole 16 on the work platform one-to-one and coaxial. The ball is installed on the support, and the ball corresponds with the guiding hole one-to-one. The support is located the below of guide holder. The rotating mechanism comprises an optical axis 11, a cam 8 and a handle 6, the two ends of the optical axis are rotatably connected to the frame, the cam is sleeved and fixed (for example, welded) on the optical axis, and the cam is of an eccentric cylinder structure. The support is supported on the cam, the handle is fixed at one end of the optical axis, the corresponding optical axis can be rotated through the handle, the cam is correspondingly driven to rotate, and the cam drives the support and the ball to lift. When the ball goes up and down, the ball is guided by the guide hole on the guide seat, the ball is lifted above the table top of the working platform at the highest position, and the ball is positioned below the working platform at the lowest position.

The liftable ball platform is used for assembling a frequency converter for a coal mining machine, the frequency converter is placed on the working platform during assembling, when the frequency converter needs to rotate and move on the working platform, the ball is lifted to a position above the working platform by only rotating the handle, so that the frequency converter is directly supported on the ball, and the frequency converter can be manually and rapidly rotated or moved along the surface of the working platform by small force.

The front end and the rear end of the optical axis are respectively provided with a shaft sleeve 7 with a radial boss, the shaft sleeves are positioned on the inner side of the frame, and the optical axis is axially limited relative to the frame through the shaft sleeves.

The optical axes are parallel to each other. Accordingly, a total of four cams support the lifting mechanism.

The lifting mechanism further comprises a sliding plate 5, which is a flat plate fixed (e.g. welded) below the bracket to lift the bracket, and the sliding plate is in contact with the four cams to form a stable four-point supporting structure.

The frame comprises a front side plate 13, a rear side plate 13, a left side plate 12 and a right side plate 12, wherein the front end and the rear end of the optical axis are respectively and rotatably connected to the front side plate and the rear side plate, and are particularly supported in paired shaft holes 14 on the front side plate and the rear side plate. The front and rear side plates and the left and right side plates are fixed by bolts to form a rectangular support housing with four vertical faces.

A locking mechanism is further arranged below the working platform and comprises a limiting block 10 and a connecting rod 9. The limiting block is L-shaped, the upper end of the limiting block is also sleeved with one end of the L-shaped block and fixed on the optical axis, the limiting block corresponds to the cam one to one, and the limiting block is arranged beside the cam. In the embodiment shown in the attached drawings, two limit blocks on the same optical axis are positioned at the inner sides of two cams. The connecting rods are respectively connected between the limiting blocks at the front parts and the limiting blocks at the rear parts of the left and right optical axes. The left end and the right end of the connecting rod are hinged with the corresponding limiting blocks, and the hinged point is located at the other end of the L shape. The lower part of stopper is equipped with the breach, and the both ends of connecting rod are located breach department and just fill the breach. The top eaves 101 of the gap are flat. When the support is in lower position, the top eaves can contact in somewhere with the top surface 91 of connecting rod and form the interference to realize the limiting displacement of this position department, when the support was in highest position, the left surface or the right flank of stopper followed the optical axis and turned to the level or be close the horizontally position in step, and contacted with the top surface 91 of connecting rod and form the interference, thereby realized the limiting displacement of this position department. The two positions of the limiting block for limiting respectively correspond to two extreme corner positions of the handle and also correspond to the starting and stopping positions of the rotatable angle range of the optical axis. When the support is at the highest position, the lifting mechanism and the rotating mechanism can be kept still by combining the downward pressure formed by the self weight of the frequency converter assembled on the working platform, and the locking function is realized. When the top eaves and the top surface 91 of the connecting rod are in a parallel state, a gap 17 is kept between the two. The size of the gap determines the size of the optical axis and the rotatable angle range of the handle, whereas the size of the optical axis and the rotatable angle range of the handle can be adjusted by changing the size of the gap.

The notches connected to the two limiting blocks at two ends of the same connecting rod are arranged in tandem, so that the connecting rod is limited between the left limiting block and the right limiting block in the front-back direction, and meanwhile, the two limiting blocks also limit the relative movement of the two optical axes in the front-back direction.

The eave 101 is preferably perpendicular to the left and right side faces 102 of the limiting block, and due to the existence of the gap 17, the range of the rotation angle of the optical axis and the handle is slightly larger than 90 degrees.

The handle has one, and the handle is fixed in the front end or the rear end of one of optical axis, and is located the outside of frame. Through the rotatory optical axis rather than being connected of handle, by the connecting rod with kinetic energy transmission to another optical axis, drive another optical axis synchronous revolution.

The operation method of the utility model is as follows: place the water-cooling converter bottom plate that will need the equipment on work platform 1, from bottom to top, from interior and accomplish the installation of converter components and parts one by one outward, when meetting in the assembling process and need rotate a certain angle or remove one section distance with the converter, but 6 anticlockwise rotations 90 degrees of one-hand operation handle, utilize the rotatory support 4 jack-ups that drives cam 8 and will be equipped with ball 3 of optical axis 11, ball 3 passes the outstanding work platform 1 of guiding hole, utilize by the decurrent dead weight of assembly converter and connecting rod 9, stopper 10 accomplishes the shutting. Therefore, the frequency converter can rotate or horizontally move by utilizing the rolling friction of the ball 3 to replace the crane lifting operation, and the assembly and turnover tasks are quickly completed. After accomplishing above operation as required, single-handed operation handle 6 clockwise rotation 90 degrees again utilizes optical axis 11 to drive cam 8 and will be equipped with the support 4 of ball 3 and fall down, and ball 3 is less than work platform 1, and the bottom plate of water-cooling converter reforms the plane laminating with work platform 1's mesa, increases friction each other to guarantee the stationary stable state relatively of the two in the assembling process, can continue equipment work, ensure equipment safety.

The utility model can be used for the turnover of the heavy frequency converter for the coal mining machine in the assembling process and can also be used for the assembling of other similar products.

Claims

1. A liftable ball platform which is characterized in that: including the frame, install work platform on the frame top surface and install elevating system and rotary mechanism in work platform below, elevating system includes guide holder, ball and support, the guide holder is installed on work platform's bottom surface, and each spacing hole one-to-one on each guide hole on the guide holder and the work platform and coaxial, and the ball is installed on the support, and ball and guide hole one-to-one, support are located the below of guide holder, rotary mechanism include optical axis, cam and handle, and the both ends of optical axis are rotated and are connected on the frame, the cam cover is established and is fixed on the optical axis, and the cam adopts eccentric cylinder structure, the support supports on the cam, the one end at the optical axis is fixed to the handle.

2. The liftable ball platform of claim 1, wherein: the front end and the rear end of the optical axis are respectively provided with a shaft sleeve with a radial boss, the shaft sleeves are positioned on the inner side of the frame, and the optical axis is axially limited relative to the frame through the shaft sleeves.

3. The liftable ball platform of claim 2, wherein: the front end and the rear end of the optical axis are respectively and fixedly provided with one cam, and the two shaft sleeves on the same optical axis are positioned on the outer sides of the two cams.

4. A liftable ball platform as claimed in claim 3, wherein: the optical axes are parallel to each other.

5. The liftable ball platform of claim 4, wherein: the guide holder is the slender strip, has a plurality ofly, and controls and set up side by side the interval, is equipped with a plurality ofly along the fore-and-aft direction interval on every guide holder the guiding hole.

6. The liftable ball platform of claim 5, wherein: the lifting mechanism further comprises a sliding plate, the sliding plate is a flat plate fixed below the support and used for lifting the support, and the sliding plate is in contact with the four cams to form a four-point supporting structure.

7. A liftable ball platform as claimed in claim 1, 2, 3, 4, 5 or 6, wherein: the frame is including dismantling fixed connection's preceding curb plate, posterior lateral plate, left side board and right side board, both ends are in the mated shaft hole of swivelling joint on preceding curb plate and posterior lateral plate respectively around the optical axis.

8. A liftable ball platform as claimed in claim 1, 2, 3, 4, 5 or 6, wherein: the working platform is characterized in that a locking mechanism is further arranged below the working platform and comprises limiting blocks and connecting rods, the limiting blocks are L-shaped, one end of each limiting block, which is also L-shaped, is sleeved and fixed on the optical axis, the limiting blocks correspond to the cams one to one, the two limiting blocks on the same optical axis are positioned on the inner sides of the two cams, one connecting rod is respectively connected between the limiting blocks at the front parts and the limiting blocks at the rear parts of the left optical axis and the right optical axis, the left end part and the right end part of each connecting rod are hinged with the corresponding limiting blocks, the hinged point is positioned at the other end of the L-shaped, the lower parts of the limiting blocks are provided with notches, the two ends of each connecting rod are positioned at the notches, the top eaves of the notches are planes, when the support is at a lower position, the top eaves are in contact with the top surfaces of the connecting rods to form interference, when the support is at a highest position, the left side surfaces or the right side surfaces of the limiting blocks are in contact with the top surfaces of the connecting rods to form interference, when the top eaves and the top surface of connecting rod are in the parallel state, keep the clearance between the two, connect the breach of two stoppers at same connecting rod both ends and arrange in tandem.

9. The liftable ball platform of claim 8, wherein: the top eaves are perpendicular to the left side and the right side of the limiting block.

10. The liftable ball platform of claim 9, wherein: the handle has one, and the handle is fixed in the front end or the rear end of one of optical axis, and is located the outside of frame.