A positioning device for a crane hoist

Abstract

The present application relates to the technical field of hoisting equipment, and particularly relates to a positioning device for hoisting of a crane. The technical scheme of the present application is as follows: comprising a top plate, further comprising a first positioning mechanism, the first positioning mechanism comprising a round plate, the underside of the top plate being provided with the round plate, the top of the round plate being fixedly connected with a first telescopic rod, and the telescopic end of the first telescopic rod being fixedly connected with the bottom of the top plate. Through the design of the first positioning mechanism and the second positioning mechanism, when the conical workpiece is placed in a first state, the three first balls can be in contact with the inner wall of the conical workpiece, so as to clamp the conical workpiece, and the top plate, the round plate and the center of the conical workpiece coincide. When the conical workpiece is placed in a second state, through the rapid positioning of the two states of the conical workpiece, the working steps of the workers can be reduced, the working efficiency is greatly improved, and the conical workpieces are prevented from rubbing against each other, so as to prevent the conical workpieces from being worn.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a positioning device for crane lifting. Background Technology

[0002] Cranes, as mechanical equipment used for handling, lifting, and moving heavy objects, play a vital role in various fields such as construction, manufacturing, and transportation. Driven by continuous industry development and diversified market demands, the types of cranes are constantly increasing.

[0003] Different types of cranes are required for hoisting different items. Equipping the lifting equipment with appropriate positioning devices can effectively increase work efficiency. In the current technology, when hoisting conical workpieces, the lifting equipment often uses electro-permanent magnet chucks to attract and lift the conical workpieces. Although this method is quick, it cannot accurately position the conical workpieces. In order to reduce damage to the conical workpieces during transportation, they are often placed in a relatively stacked manner. When it is necessary to stack conical workpieces, the staff needs to manually adjust the posture and position of the conical workpieces during hoisting, which is time-consuming, labor-intensive, inefficient, and prone to injury to the staff. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a positioning device for crane hoisting.

[0005] The technical solution of the present invention is as follows: a positioning device for crane hoisting, comprising a top plate and a first positioning mechanism, the first positioning mechanism comprising a circular plate, the circular plate being disposed on the lower side of the top plate, a first telescopic rod being fixedly connected to the top of the circular plate, the telescopic end of the first telescopic rod being fixedly connected to the bottom of the top plate, an air valve being installed on the outer wall of the fixed end of the first telescopic rod, a plurality of evenly distributed first connecting rods being hinged to the bottom of the top plate, a plurality of evenly distributed through slots being opened on the top of the circular plate, a sliding block being slidably connected in each of the plurality of through slots, one end of the first connecting rod being hinged to the sliding block, a first ball being rolledly connected to one side of the sliding block, and a second positioning mechanism comprising a sliding rod, a plurality of evenly distributed sliding rods being slidably connected through the top of the top plate, a first tension spring being disposed between each of the plurality of sliding rods and the top plate, a C-shaped frame being slidably sleeved on the outer wall of each of the plurality of sliding rods, and a second telescopic rod being disposed on the lower side of the C-shaped frame.

[0006] As a preferred embodiment of the present invention, the second positioning mechanism further includes a short shaft, and the bottom of each of the plurality of sliding rods is provided with a vertical groove, in which the short shaft is slidably connected. A first compression spring is provided between the short shaft and the inner wall of the vertical groove. An L-shaped tube is provided on the lower side of each of the plurality of sliding rods, and a first sliding groove is provided at the top of the L-shaped tube. The bottom end of the short shaft is inserted into the first sliding groove and slides therein. A second compression spring is provided between the short shaft and the inner wall of the first sliding groove. A vertical plate is fixed to the top of the L-shaped tube, and a second ball bearing is slidably connected to one end of the L-shaped tube.

[0007] As a preferred embodiment of the present invention, the second positioning mechanism further includes a third ball bearing, the bottom end of the L-shaped tube is rotatably connected to the third ball bearing, the outer wall of the L-shaped tube is fixedly connected to a shaped plate, the outer walls of several sliding rods are all fixedly connected to mounting boxes, a first toothed plate is slidably connected inside the mounting box, a second tension spring is provided between the first toothed plate and the inner wall of the mounting box, the outer wall of the mounting box is provided with a through sliding groove, the outer wall of the first toothed plate is fixedly connected to a horizontal shaft that cooperates with the shaped plate, one end of the horizontal shaft is inserted into the sliding groove and slides therein, and the outer wall of the circular plate is fixedly connected to several evenly distributed second toothed plates, the first toothed plates and the second toothed plates cooperate with each other.

[0008] As a preferred embodiment of the present invention, it further includes a delay mechanism, which includes a second connecting rod. A plurality of evenly distributed second connecting rods are hinged to the bottom of the top plate. A horizontal plate is fixedly fitted onto the outer wall of each of the sliding rods. The C-shaped frame is slidably connected to the bottom of the horizontal plate. A sliding frame is slidably fitted onto the outer wall of the horizontal plate. One end of the second connecting rod is hinged to the sliding frame. A first elastic telescopic rod is fixedly connected through the bottom of the sliding frame. The telescopic end of the first elastic telescopic rod is fixedly connected to the C-shaped frame. A C-shaped groove is formed through the bottom of the horizontal plate. A sliding plate is slidably connected to the inner wall of the C-shaped groove. A first wedge block, which cooperates with the C-shaped frame, is fixedly connected to the bottom of the sliding plate. The first wedge block is engaged in the C-shaped groove of the horizontal plate and slides within it.

[0009] As a preferred embodiment of the present invention, the delay mechanism further includes a second wedge block, the bottom of the sliding plate is fixedly connected to the second wedge block, the second wedge block is used in conjunction with the sliding frame, and the second wedge block is inserted into the C-shaped groove of the horizontal plate and slides therein.

[0010] As a preferred embodiment of the present invention, the delay mechanism further includes a rectangular block, the bottom of the sliding frame is fixedly connected to the rectangular block, the inner wall of the rectangular frame is slidably connected to a connecting rod, a third tension spring is provided between the connecting rod and the inner wall of the rectangular frame, a locking block is fixedly connected to the outer wall of the connecting rod, and a wedge-shaped groove that cooperates with the locking block is provided on one side of the rectangular block.

[0011] As a preferred embodiment of the present invention, it further includes an unlocking block, which is fixedly connected to the bottom of the horizontal plate, and the unlocking block is used in conjunction with the locking block.

[0012] As a preferred embodiment of the present invention, it further includes an extension mechanism, which includes an L-shaped plate. The outer walls of several sliding rods are fixedly connected to the L-shaped plate. A pressing plate is hinged to one side of the L-shaped plate. A first protruding shaft that cooperates with the pressing plate is fixedly connected to the outer wall of the L-shaped tube. An elastic telescopic shaft is fixedly connected to the bottom of the U-shaped frame. The fixed end of the second telescopic rod is fixedly connected to the telescopic end of the elastic telescopic shaft. A contact rod that cooperates with the pressing plate is fixedly connected to the telescopic end of the elastic telescopic shaft.

[0013] As a preferred embodiment of the present invention, the extension mechanism further includes a second elastic telescopic rod, which is fixedly connected to one side of the C-shaped frame. The telescopic end of the second elastic telescopic rod is slidably connected to the outer wall of the sliding rod. An air bladder is connected to the outer wall of the fixed end of the second elastic telescopic rod, and a hose is connected between the air bladder and the second telescopic rod.

[0014] As a preferred embodiment of the present invention, it further includes an elastic limiting pin. A cylindrical groove is provided on the inner wall of the fixed end of the second telescopic rod. The elastic limiting pin is slidably connected in the cylindrical groove and an electromagnet is fixedly installed therein. A limiting groove is provided on the outer wall of the telescopic end of the second telescopic rod to cooperate with the elastic limiting pin. A magnetic block is fixedly connected to one end of the elastic limiting pin.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention, through the design of the first positioning mechanism and the second positioning mechanism, enables the conical workpiece to be clamped when it is placed in the first state by contacting the inner wall of the conical workpiece through three first ball bearings, and to make the top plate, the circular plate and the center of the conical workpiece coincide. When the conical workpiece is placed in the second state, the centers of the two conical workpieces in different states can be made to coincide through contact between the telescopic ends of the three second telescopic rods and the outer wall of the conical workpiece. This allows for the rapid stacking of the two conical workpieces in different states. By quickly positioning the conical workpieces in the two states, the working steps of the workers can be reduced, the work efficiency can be greatly improved, and the friction between the conical workpieces can be prevented, thus preventing wear of the conical workpieces.

[0017] 2. Through the design of the vertical plate, this invention can prevent the L-shaped tube from rising relative to the corresponding sliding rod when the top of the vertical plate contacts the bottom of the sliding rod. This would prevent the L-shaped tube from driving the first protruding shaft on it to press against the bottom of the adjacent extrusion plate, causing the telescopic end of the elastic telescopic shaft to drive the second telescopic rod to fall and contact the ground. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the first positioning mechanism of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the second positioning mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation at the short shaft of the present invention;

[0022] Figure 5 This is a schematic diagram of the delay mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the installation at the first toothed plate of the present invention;

[0024] Figure 7 This is a schematic diagram of the installation at the second wedge block of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation at the first wedge block of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the extension mechanism of the present invention;

[0027] Figure 10 This is a schematic diagram of the installation of the elastic limiting pin of the present invention.

[0028] The above-mentioned drawings include the following reference numerals: 1. Top plate; 201. Circular plate; 202. First telescopic rod; 203. Air valve; 204. First connecting rod; 205. Sliding block; 206. First ball bearing; 207. Sliding rod; 208. C-shaped frame; 209. Second telescopic rod; 301. Short shaft; 302. L-shaped tube; 303. Vertical plate; 304. Second ball bearing; 401. Third ball bearing; 402. Irregularly shaped plate; 403. Mounting box; 404. First toothed plate; 405. Second toothed plate; 501. 5011. Second connecting rod, 5012. Horizontal plate, 5013. Sliding frame, 504. First elastic telescopic rod, 505. Sliding plate, 506. First wedge block, 507. Second wedge block, 608. Rectangular block, 609. Connecting rod, 6000. Locking block, 701. Unlocking block, 8001. L-shaped plate, 802. Extrusion plate, 803. Elastic telescopic shaft, 804. Contact rod, 901. Second elastic telescopic rod, 902. Airbag, 1001. Elastic limit pin, 1002. Electromagnet, 100. Conical workpiece. Detailed Implementation

[0029] Although the invention may be described with respect to specific applications or industries, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0030] Example 1

[0031] A positioning device for crane lifting, such as Figures 1-3As shown, the device includes a top plate 1 and a first positioning mechanism. The first positioning mechanism includes a circular plate 201. The circular plate 201 is located on the lower side of the top plate 1 and is coaxial with the top plate 1. A first telescopic rod 202 is fixedly connected to the top of the circular plate 201. The telescopic end of the first telescopic rod 202 is fixedly connected to the bottom of the top plate 1. An air valve 203 is installed on the outer wall of the fixed end of the first telescopic rod 202. The air valve 203 can control the air volume inside the first telescopic rod 202. Three evenly distributed first connecting rods 204 are hinged to the bottom of the top plate 1. Three evenly distributed through slots are opened on the top of the circular plate 201. Sliding blocks are horizontally slidably connected in each of the three through slots. 205, one end of each of the three first connecting rods 204 is hinged to the corresponding sliding block 205. A first ball bearing 206 is rolledly connected to one side of the sliding block 205. The first ball bearing 206 is used to contact the inner wall of the conical workpiece 100. The system also includes a second positioning mechanism, which includes a sliding rod 207. Three evenly distributed sliding rods 207 are vertically slidably connected through the top of the top plate 1. A first tension spring is provided between each of the three sliding rods 207 and the top plate 1. The first tension spring is sleeved on the outer wall of the sliding rod 207. A C-shaped frame 208 is horizontally slidably sleeved on the outer wall of each of the three sliding rods 207. A second telescopic rod 209 is provided on the lower side of the C-shaped frame 208.

[0032] like Figure 3 and Figure 4 As shown, the second positioning mechanism also includes a short shaft 301. Vertical grooves are provided at the bottom of each of the three sliding rods 207. The short shaft 301 is vertically slidably connected within the vertical grooves. A first compression spring is provided between the short shaft 301 and the inner wall of the vertical groove. An L-shaped tube 302 is provided on the lower side of each of the three sliding rods 207. A first sliding groove is provided at the top of the L-shaped tube 302. The bottom end of the short shaft 301 is inserted into the first sliding groove and slides horizontally within it. A second compression spring is provided between the short shaft 301 and the inner wall of the first sliding groove. A vertical plate 303 is fixedly connected to the top of the L-shaped tube 302. When the top of the vertical plate 303 contacts the bottom end of the adjacent sliding rod 207, the first compression spring cannot retract. A second ball bearing 304 is rollably connected to one end of the L-shaped tube 302.

[0033] like Figures 4-6As shown, the second positioning mechanism also includes a third ball bearing 401. The bottom end of the L-shaped tube 302 is rotatably connected to the third ball bearing 401. A special-shaped plate 402 is fixedly connected to the top of the outer wall of the L-shaped tube 302. The outer walls of the three sliding rods 207 are all fixedly connected to the mounting box 403. A first toothed plate 404 is horizontally slidably connected inside the mounting box 403. A second tension spring is provided between the first toothed plate 404 and the inner wall of the mounting box 403. A sliding groove is provided through the outer wall of the mounting box 403. A horizontal shaft that cooperates with the special-shaped plate 402 is fixedly connected to the outer wall of the first toothed plate 404. One end of the horizontal shaft is inserted into the sliding groove and slides horizontally within it. Three evenly distributed second toothed plates 405 are fixedly connected to the outer wall of the circular plate 201. The first toothed plate 404 and the second toothed plate 405 cooperate with each other. When the first toothed plate 404 and the second toothed plate 405 are engaged, the three sliding rods 207 and the circular plate 201 can be relatively stationary.

[0034] like Figure 5 , Figure 7 and Figure 8 As shown, it also includes a delay mechanism, which includes a second connecting rod 501. Three evenly distributed second connecting rods 501 are hinged to the bottom of the top plate 1. A horizontal plate 5011 is fixedly sleeved on the middle of the outer wall of each of the three sliding rods 207. A U-shaped frame 208 is slidably connected to the bottom of the horizontal plate 5011. A sliding frame 5012 is horizontally slidably sleeved on the outer wall of the horizontal plate 5011. One end of each of the three second connecting rods 501 is hinged to the corresponding sliding frame 5012. The bottom of the sliding frame 5012... A first elastic telescopic rod 502 is fixedly connected through the cross section. The telescopic end of the first elastic telescopic rod 502 is fixedly connected to the C-shaped frame 208. A C-shaped groove is opened through the bottom of the horizontal plate 5011. A sliding plate 503 is slidably connected to the inner wall of the C-shaped groove. A first wedge block 504 that cooperates with the C-shaped frame 208 is fixedly connected to the bottom of the sliding plate 503. The first wedge block 504 is inserted into the C-shaped groove of the horizontal plate 5011 and slides therein. The first wedge block 504 is used to limit the position of the C-shaped frame 208.

[0035] like Figure 7 and Figure 8 As shown, the delay mechanism also includes a second wedge block 505. The bottom of the sliding plate 503 is fixedly connected to the second wedge block 505. The second wedge block 505 is used in conjunction with the sliding frame 5012. The second wedge block 505 is inserted into the C-shaped groove of the horizontal plate 5011 and slides therein. When the second wedge block 505 is squeezed, the first wedge block 504 can no longer limit the C-shaped frame 208.

[0036] like Figure 8As shown, the delay mechanism also includes a rectangular block 601. The bottom of the sliding frame 5012 is fixedly connected to the rectangular block 601. The inner wall of the convex frame 208 is horizontally slidably connected to a connecting rod 602. A third tension spring is provided between the connecting rod 602 and the inner wall of the convex frame 208. The outer wall of the connecting rod 602 is fixedly connected to a locking block 603. Both sides of the locking block 603 are provided with inclined surfaces. One side of the rectangular block 601 is provided with a wedge-shaped groove that cooperates with the locking block 603. When the locking block 603 is inserted into the wedge-shaped groove of the rectangular block 601, the convex frame 208 can be limited by the connecting rod 602.

[0037] like Figure 8 As shown, it also includes an unlocking block 701. The bottom of the horizontal plate 5011 is fixed with the unlocking block 701. The unlocking block 701 works in conjunction with the locking block 603. When the locking block 603 contacts the unlocking block 701, it can disengage from the wedge-shaped groove of the rectangular block 601.

[0038] like Figure 9 As shown, it also includes an extension mechanism, which includes an L-shaped plate 801. The bottom of the outer wall of each of the three sliding rods 207 is fixedly connected to the L-shaped plate 801. A pressing plate 802 is hinged to one side of the L-shaped plate 801. A first protruding shaft that works in conjunction with the pressing plate 802 is fixedly connected to the upper part of the outer wall of the L-shaped tube 302. An elastic telescopic shaft 803 is fixedly connected to the bottom of the U-shaped frame 208. The fixed end of the second telescopic rod 209 is fixedly connected to the telescopic end of the elastic telescopic shaft 803. A contact rod 804 that works in conjunction with the pressing plate 802 is fixedly connected to the telescopic end of the elastic telescopic shaft 803. When the pressing plate 802 rotates, it can extend the telescopic end of the elastic telescopic shaft 803 by pressing the contact rod 804.

[0039] like Figure 9 As shown, the extension mechanism also includes a second elastic telescopic rod 901. The second elastic telescopic rod 901 is fixedly connected through one side of the C-shaped frame 208. The telescopic end of the second elastic telescopic rod 901 is slidably connected to the outer wall of the sliding rod 207. The outer wall of the fixed end of the second elastic telescopic rod 901 is connected to an airbag 902. The airbag 902 and the second telescopic rod 209 are connected by a hose. When the telescopic end of the second elastic telescopic rod 901 contracts, the airbag 902 can be inflated.

[0040] like Figure 10 As shown, it also includes an elastic limiting pin 1001. A cylindrical groove is provided on the inner wall of the fixed end of the second telescopic rod 209. The elastic limiting pin 1001 is slidably connected in the cylindrical groove and an electromagnet 1002 is fixedly installed therein. A limiting groove is provided on the outer wall of the telescopic end of the second telescopic rod 209 to cooperate with the elastic limiting pin 1001. When the elastic limiting pin 1001 is inserted into the limiting groove of the telescopic end of the second telescopic rod 209, it can limit the telescopic end of the second telescopic rod 209. A magnetic block is fixedly connected to one end of the elastic limiting pin 1001.

[0041] Initially, the telescopic end of the first telescopic rod 202 is in the extended state, and the first tension spring is in the contracted state. When it is necessary to hoist the conical workpiece 100, there are two states depending on the placement of the conical workpiece 100. The first state is that the smaller diameter end of the conical workpiece 100 is placed upwards. In this case, the crane is first connected to the top plate 1 via a wire rope. Then, the crane controls the entire device to move to the upper side of the conical workpiece 100, and the circular plate 201 is roughly aligned with the center of the conical workpiece 100. Then, the crane controls the entire device to descend, so that the bottom of the circular plate 201 contacts the top of the conical workpiece 100. The crane continues to control the entire device to descend, and the crane drives the top plate 1 to descend. At this time, the air valve 203 is in the open state. The weight of the top plate 1 is applied to the telescopic end of the first telescopic rod 202, causing the top plate 1 to descend. Simultaneously, the telescopic end of the first telescopic rod 202 retracts, and the air inside the first telescopic rod 202 is discharged through the air valve 203. As the top plate 1 descends, three sliding rods 207 descend via three first tension springs. Each sliding rod 207, via a first compression spring, causes its corresponding short shaft 301 to descend. The short shaft 301 then causes its corresponding L-shaped tube 302 to descend, and the L-shaped tube 302 causes its second ball bearing 304 and third ball bearing 401 to descend. At the same time, the top plate 1, along with three first connecting rods 204, applies a pushing force to three sliding blocks 205, causing the sliding blocks 205 to slide along the corresponding through slots on the circular plate 201. At this point, the three sliding blocks 205 are far apart. The conical workpiece 100 moves, causing the corresponding first ball bearing 206 to move. Then, one of the second balls bearing 304 contacts and presses against the outer wall of the conical workpiece 100. Because the conical workpiece 100 is heavier, it exerts a reaction force on the second ball bearing 304. The force on the second ball bearing 304 causes the corresponding L-shaped tube 302 to move horizontally. The L-shaped tube 302 causes the vertical plate 303 on it to move closer to the adjacent short shaft 301. The second compression spring contracts under pressure. After the vertical plate 303 moves, its top abuts against the bottom of the corresponding sliding rod 207. When the second compression spring contracts to its limit, the second ball bearing 304 in contact with the conical workpiece 100 applies force to the adjacent sliding rod 207 through the L-shaped tube 302. The sliding rod 207, under force, drives the top plate 1 to move, causing the center of the top plate 1 to move closer to the center of the conical workpiece 100. Subsequently, the other two second balls 304 contact the outer wall of the conical workpiece 100, and the above steps are repeated to achieve the same effect until the center of the top plate 1 coincides with the center of the conical workpiece 100. The top plate 1 can then drive the circular plate 201 to move via the first telescopic rod 202, causing the circular plate 201 to coincide with the center of the conical workpiece 100. This achieves the initial positioning of the entire device. By having the top of the vertical plate 303 abut against the bottom of the sliding rod 207, the force on the three sliding rods 207 is made equal, thereby improving the accuracy of the initial positioning and preventing the L-shaped tube 302 from lifting upward relative to the corresponding sliding rod 207.This causes the L-shaped tube 302 to push its first protruding shaft against the bottom of the adjacent extrusion plate 802, causing the telescopic end of the elastic telescopic shaft 803 to drive the corresponding second telescopic rod 209 to fall and contact the ground. This prevents the entire device from achieving the desired effect. Simultaneously, one of the first ball bearings 206 contacts the inner wall of the conical workpiece 100. The conical workpiece 100 then applies a reaction force to the contacting first ball bearing 206. One of the first ball bearings 206 is subjected to this force, and through the corresponding sliding block 205 and the first connecting rod 204, the reaction force is applied to the top plate 1, causing the top plate 1 to be subjected to this force. The first telescopic rod 202 drives the circular plate 201 to move at the top of the conical workpiece 100 until the other two first balls 206 are in contact with the inner wall of the conical workpiece 100. This process is repeated to achieve the same effect. At this point, the top plate 1, the circular plate 201, and the center of the conical workpiece 100 coincide. The air valve 203 is then closed, preventing the telescopic end of the first telescopic rod 202 from moving. This causes the three sliding blocks 205 to respectively drive the first balls 206 on them to fit tightly against the inner wall of the conical workpiece 100. Then, the crane lifts the top plate 1 upwards. When the top plate 1 is lifted upwards, the top plate 1 passes through the first... The telescopic rod 202 drives the circular plate 201 to rise upwards, which in turn drives the three sliding blocks 205 to rise upwards. The three sliding blocks 205, through their respective first ball bearings 206, press against the inner wall of the conical workpiece 100, causing the conical workpiece 100 to rise upwards. Then, by controlling the movement of the entire device via a crane, the conical workpiece 100 can be transported. Once the conical workpiece 100 is transported to the appropriate position, the air valve 203 is opened, allowing air to enter the inner cavity of the first telescopic rod 202, thus enabling the telescopic end of the first telescopic rod 202 to move. Then, by controlling the movement of the top plate 1 via a crane... The top plate 1 lifts the telescopic end of the first telescopic rod 202 and one end of each of the three first connecting rods 204 upwards. The telescopic end of the first telescopic rod 202 extends under force, and the three first connecting rods 204 exert tension on their corresponding sliding blocks 205, causing the three sliding blocks 205 to move closer to their corresponding first ball bearings 206 and reset. Once the telescopic end of the first telescopic rod 202 is fully reset, the top plate 1, through the first telescopic rod 202, lifts the entire device upwards, moving it away from the conical workpiece 100, thus completing the transportation of the conical workpiece 100 in its first state.

[0042] In the second state, the conical workpiece 100 is placed with the larger diameter end facing upwards. Initially, the first tension spring is in a contracted state, the three second telescopic rods 209 are in a state of mutual distance, there is a gap between the first toothed plate 404 and the adjacent second toothed plate 405, and the vertical surface of the first wedge block 504 is in contact with the vertical surface of the adjacent convex frame 208, restricting the movement of the convex frame 208. First, the entire device is moved to the upper side of the conical workpiece 100 by controlling the crane, and the circular plate 201 is roughly aligned with the center of the conical workpiece 100. Then, the entire device is lowered by controlling the crane, thereby causing the three third balls 401 to fit against the top of the conical workpiece 100. It is worth noting that the diameter of the circular plate 201 is smaller than the larger diameter end of the conical workpiece 100. The inner diameter of the circular plate 201 is such that it will not contact the conical workpiece 100. This prevents the circular plate 201 from obstructing the conical workpiece 100 during hoisting, making it difficult for workers to observe. Furthermore, the distance between the three second telescopic rods 209 is relatively large, allowing the conical workpiece 100 to pass through easily during the descent of the entire device. At this time, the top plate 1 continues to descend under its own weight, and the three first tension springs apply downward pulling force to the three sliding rods 207 respectively. It is worth noting that the top of the vertical plate 303 does not contact the bottom of the corresponding sliding rod 207 at this time. After the sliding rod 207 is subjected to force, the third ball bearing 401 provides support to the short shaft 301 through the L-shaped tube 302. 02 and the short shaft 301 are raised relative to the sliding rod 207. The short shaft 301 slides in the vertical groove of the corresponding sliding rod 207. The first compression spring is compressed, and the L-shaped tube 302 drives the irregular plate 402 on it to press against the outer wall of the horizontal shaft of the adjacent first toothed plate 404. The horizontal shaft is forced to slide horizontally along the sliding groove of the mounting box 403, and drives the first toothed plate 404 to slide horizontally towards the side closer to the adjacent second toothed plate 405. The second tension spring is extended, and then the first toothed plate 404 engages with the adjacent second toothed plate 405, thereby preventing the circular plate 201 from falling and keeping it stable relative to the three L-shaped tubes 302. At the same time, the L-shaped tube 302 drives the first protruding shaft on it to press against the bottom of the adjacent extrusion plate 802. The force applied to contact rod 802 causes it to rotate around the connection point of the L-shaped plate 801, pressing against the top of the adjacent contact rod 804. The force on the contact rod 804 causes the extension ends of the adjacent elastic telescopic shafts 803 to extend. At this time, the extension ends of all three elastic telescopic shafts 803 extend simultaneously, causing the three second telescopic rods 209 to descend synchronously. Since the three sliding rods 207 cannot descend at this point, as the top plate 1 continues to descend, the first compression spring contracts to its limit, and the short shaft 301 provides support for the adjacent sliding rods 207. The sliding rods 207 slide upwards relative to the top plate 1, and the first tension spring extends under force. The top plate 1 simultaneously applies a pushing force to the three first connecting rods 204 and the three second connecting rods 501. After the three first connecting rods 204 are subjected to force, the above steps are repeated to achieve the same effect.After the three second links 501 are subjected to force, they respectively apply a pushing force to their corresponding sliding frames 5012. After being subjected to force, the sliding frames 5012 slide horizontally along the surface of the horizontal plate 5011. At this time, the three sliding frames 5012 move closer to each other and drive the first elastic telescopic rod 502 to move. Since the chamfered frame 208 is restricted from moving at this time, the sliding frame 5012 moves horizontally relative to the corresponding chamfered frame 208. The telescopic end of the first elastic telescopic rod 502 is stretched by force. Then the sliding frame 5012 contacts and presses against the bottom of the adjacent second wedge block 505. The second wedge block 505 is subjected to force and drives the first wedge block 504 to lift and slide upward through the sliding plate 503. After the first wedge block 504 is lifted and slides upward, it no longer contacts the bottom of the first wedge block 504. When adjacent rectangular frames 208 come into contact, and after the rectangular frames 208 are released from their constraints, they can move. The telescopic end of the first elastic telescopic rod 502 quickly retracts and drives the corresponding rectangular frame 208 to slide horizontally. The rectangular frame 208 drives the locking block 603 to move horizontally through the connecting rod 602, and drives the second telescopic rod 209 and the second elastic telescopic rod 901 on it to move. After the locking block 603 moves, it no longer contacts the adjacent unlocking block 701. After the locking block 603 is released from its constraints, the connecting rod 602 can move. The third tension spring retracts and drives the locking block 603 to move horizontally through the connecting rod 602. Then, the inclined surface of the locking block 603 near the rectangular block 601 contacts and presses against the outer wall of the adjacent rectangular block 601. 3. The connecting rod 602 slides horizontally, and the third tension spring extends under force until the locking block 603 aligns with the wedge groove of the rectangular block 601. The third tension spring retracts and drives the locking block 603 to move horizontally through the connecting rod 602. After the locking block 603 moves, it is locked into the wedge groove of the rectangular block 601. The rectangular block 601 can limit the locking block 603 through the wedge groove, thereby preventing the three C-shaped frames 208 from moving. When the three C-shaped frames 208 lift the conical workpiece 100, they can stably clamp the conical workpiece 100. At this time, the top surface of the three C-shaped frames 208 near the corner of the elastic telescopic shaft 803 is in contact with the bottom surface of the upper protrusion of the conical workpiece 100. The second elastic telescopic rod 90 After the movement, the telescopic end of the second elastic telescopic rod 901 is compressed and contracted by the outer wall of the corresponding sliding rod 207. Air from the inner cavity of the second elastic telescopic rod 901 enters the airbag 902, and then enters the inner cavity of the corresponding second telescopic rod 209 through the hose, causing the telescopic end of the second telescopic rod 209 to extend. After the telescopic end of the second telescopic rod 209 extends, it contacts the bottom surface. The telescopic end of the second telescopic rod 209 is blocked and cannot extend further. The remaining air accumulates in the airbag 902, causing the airbag 902 to inflate. Then the air valve 203 is closed, preventing the telescopic end of the first telescopic rod 202 from extending. This prevents the gap between the top plate 1 and the circular plate 201 from changing, thus completing the hoisting and positioning of the conical workpiece 100 in the second state.

[0043] Then, the entire device is lifted upwards by the crane, thereby lifting the top plate 1 and the circular plate 201 upwards. The three second toothed plates 405 on the circular plate 201 apply an upward force to the adjacent first toothed plates 404. The first toothed plates 404 drive the adjacent sliding rods 207 upwards through the mounting box 403. The sliding rods 207 drive the corresponding C-shaped frames 208 upwards. The C-shaped frames 208 drive the second telescopic rods 209 upwards through the elastic telescopic shaft 803. The three C-shaped frames 208 apply force to the bottom surface of the upper protrusion of the conical workpiece 100. The conical workpiece 100 is lifted upwards by the force. At this time, the distance between the second telescopic rods 209 and the ground increases, and the airbag 902 gradually contracts. The air in the airbag 902 enters through the hose. The telescopic ends of the three second telescopic rods 209 gradually extend into the inner cavity of the adjacent second telescopic rod 209. When the telescopic ends of the second telescopic rods 209 are fully extended, the electromagnet 1002 is activated. The electromagnet 1002 applies a repulsive force to the magnetic block of the adjacent elastic limiting pin 1001, causing the elastic limiting pin 1001 to slide away from the electromagnet 1002. After sliding, the elastic limiting pin 1001 is engaged in the limiting groove of the telescopic end of the second telescopic rod 209, thereby limiting the telescopic end of the second telescopic rod 209 to prevent it from being moved by external force. Then, the crane controls the movement of the entire device, moving the conical workpiece 100 in the second state above the conical workpiece 100 in the first state, and lowering the entire device. The frame 208 lowers the conical workpiece 100 downwards. Then, the telescopic end of one of the second telescopic rods 209 contacts the outer wall of the conical workpiece 100 in the first state. The telescopic end of the second telescopic rod 209 is pressed against the outer wall of the conical workpiece 100, causing the adjacent frame 208 to move via the elastic telescopic shaft 803. The frame 208, through its connecting rod 602, moves the locking block 603. The locking block 603 presses against the wedge-shaped groove inner wall of the adjacent rectangular block 601. The rectangular block 601, under this force, applies tension or thrust to the top plate 1 via the corresponding sliding frame 5012 and the second connecting rod 501, causing the top plate 1 to align with the center of the conical workpiece 100 in the first state. The top plate 1 can then move the circular plate 201 via the first telescopic rod 202. The circular plate 201 is aligned with the center of the conical workpiece 100 in the first state until the telescopic ends of the other two second telescopic rods 209 are in contact with the outer wall of the conical workpiece 100 in the first state. The above steps are repeated to achieve the same effect. At this time, the centers of the two conical workpieces 100 in different states coincide, and the smaller diameter ends of the two conical workpieces 100 in different states abut against each other. Then, the electromagnet 1002 is turned off, and the electromagnet 1002 no longer applies repulsive force to the magnetic blocks of the adjacent elastic limit pins 1001. The elastic limit pins 1001 retract and slide to reset, and disengage from the limit grooves of the telescopic ends of the second telescopic rods 209. After the telescopic ends of the second telescopic rods 209 are freed from the restriction, they can move. Then, the air valve 203 is opened, and the top plate 1 is lifted upward by the crane.When the top plate 1 is raised, the telescopic end of the first telescopic rod 202 extends and resets, causing one end of each of the three first connecting rods 204 and the three second connecting rods 501 to rise upwards. The first connecting rods 204 repeat the above steps and achieve the same effect. When the second connecting rods 501 rise upwards, they apply a pulling force to the adjacent sliding frames 5012, causing the three sliding frames 5012 to slide horizontally away from each other. The sliding frames 5012 drive the first elastic telescopic rod 502 on them to move. The telescopic end of the first elastic telescopic rod 502 drives the C-shaped frame 208 to slide and reset. The C-shaped frame 208 drives the corresponding first... The second telescopic rod 209 and the second elastic telescopic rod 901 move to their reset positions. During the reset process of the second elastic telescopic rod 901, the distance between the fixed end of the second elastic telescopic rod 901 and the adjacent sliding rod 207 increases, and the telescopic end of the second elastic telescopic rod 901 gradually extends. Air is drawn into the inner cavity of the second elastic telescopic rod 901 through the airbag 902 and the hose, causing the telescopic end of the second telescopic rod 209 to retract and reset. Subsequently, the locking block 603 contacts the inclined surface of the unlocking block 701, and the unlocking block 701 engages with the locking block 603. 3. Upon compression, the locking block 603 is forced to slide the connecting rod 602 horizontally. The third tension spring extends under pressure. After the locking block 603 moves, it disengages from the wedge groove of the rectangular block 601 and completes its reset. Subsequently, all three first tension springs retract and reset, and the top plate 1 continues to rise. The three first tension springs then drive the three sliding rods 207 to rise, increasing the gap between the sliding rods 207 and the corresponding L-shaped tubes 302. The first compression springs gradually release and reset, driving the corresponding short shafts 301 to slide and reset. The first protruding shaft of the L-shaped tube 302 no longer compresses the bottom of the compression plate 802. After the pressing plate 802 is released from its restraints, the telescopic ends of the adjacent elastic telescopic shafts 803 can move. The retraction of the telescopic ends of the elastic telescopic shafts 803 causes the corresponding second telescopic rod 209 to retract and reset. At the same time, the irregularly shaped plate 402 no longer presses against the transverse axis of the first toothed plate 404. After the transverse axis is released from its restraints, the first toothed plate 404 can move. The retraction of the second tension spring causes the first toothed plate 404 to slide and reset. After resetting, the first toothed plate 404 no longer contacts the adjacent second toothed plate 405. This completes the hoisting and resetting of the conical workpiece 100 in both states by the overall device.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A positioning device for crane hoisting, comprising a top plate (1), characterized in that: It also includes a first positioning mechanism, which includes a circular plate (201). The circular plate (201) is provided on the lower side of the top plate (1). A first telescopic rod (202) is fixedly connected to the top of the circular plate (201). The telescopic end of the first telescopic rod (202) is fixedly connected to the bottom of the top plate (1). An air valve (203) is installed on the outer wall of the fixed end of the first telescopic rod (202). Several evenly distributed first connecting rods (204) are hinged to the bottom of the top plate (1). Several evenly distributed through slots are opened on the top of the circular plate (201). Sliding blocks (205) are slidably connected in each of the several through slots. The first connecting rod (204) is hinged at one end to the sliding block (205). The first ball bearing (206) is rolled on one side of the sliding block (205). The second positioning mechanism includes a sliding rod (207). The top of the top plate (1) is slidably connected to several evenly distributed sliding rods (207). A first tension spring is provided between the sliding rods (207) and the top plate (1). A C-shaped frame (208) is slidably sleeved on the outer wall of the sliding rods (207). A second telescopic rod (209) is provided on the lower side of the C-shaped frame (208). The second positioning mechanism also includes a short shaft (301), and the bottom of each of the sliding rods (207) is provided with a vertical groove. The short shaft (301) is slidably connected in the vertical groove. A first compression spring is provided between the short shaft (301) and the inner wall of the vertical groove. An L-shaped tube (302) is provided on the lower side of each of the sliding rods (207). A first sliding groove is provided at the top of the L-shaped tube (302). The bottom end of the short shaft (301) is inserted into the first sliding groove and slides therein. A second compression spring is provided between the short shaft (301) and the inner wall of the first sliding groove. A vertical plate (303) is fixed to the top of the L-shaped tube (302). A second ball bearing (304) is slidably connected to one end of the L-shaped tube (302). When the conical workpiece is placed in the first state, the smaller diameter end of the conical workpiece (100) is placed upwards. The three first ball bearings contact the inner wall of the conical workpiece, thereby clamping the conical workpiece and making the top plate, the circular plate and the center of the conical workpiece coincide. When the conical workpiece is placed in the second state, the larger diameter end of the conical workpiece (100) is placed upwards. The telescopic ends of the three second telescopic rods contact the outer wall of the conical workpiece, making the centers of the two conical workpieces in different states coincide, thereby quickly completing the stacking of the two conical workpieces in different states.

2. The positioning device for crane hoisting according to claim 1, characterized in that: The second positioning mechanism also includes a third ball bearing (401), the bottom end of the L-shaped tube (302) is rotatably connected to the third ball bearing (401), the outer wall of the L-shaped tube (302) is fixedly connected to a shaped plate (402), the outer walls of several sliding rods (207) are all fixedly connected to a mounting box (403), the mounting box (403) is slidably connected to a first toothed plate (404), a second tension spring is provided between the first toothed plate (404) and the inner wall of the mounting box (403), the outer wall of the mounting box (403) is provided with a through sliding groove, the outer wall of the first toothed plate (404) is fixedly connected to a horizontal shaft that cooperates with the shaped plate (402), one end of the horizontal shaft is inserted into the sliding groove and slides therein, the outer wall of the circular plate (201) is fixedly connected to several evenly distributed second toothed plates (405), the first toothed plate (404) and the second toothed plate (405) cooperate with each other.

3. The positioning device for crane hoisting according to claim 1, characterized in that: It also includes a delay mechanism, which includes a second connecting rod (501). Several evenly distributed second connecting rods (501) are hinged to the bottom of the top plate (1). A horizontal plate (5011) is fixedly fitted onto the outer wall of several sliding rods (207). The U-shaped frame (208) is slidably connected to the bottom of the horizontal plate (5011). A sliding frame (5012) is slidably fitted onto the outer wall of the horizontal plate (5011). One end of the second connecting rod (501) is hinged to the sliding frame (5012). The bottom of the frame (5012) is fixedly connected to a first elastic telescopic rod (502), and the telescopic end of the first elastic telescopic rod (502) is fixedly connected to the C-shaped frame (208). The bottom of the horizontal plate (5011) is provided with a C-shaped groove, and a sliding plate (503) is slidably connected to the inner wall of the C-shaped groove. The bottom of the sliding plate (503) is fixedly connected to a first wedge block (504) that cooperates with the C-shaped frame (208). The first wedge block (504) is inserted into the C-shaped groove of the horizontal plate (5011) and slides therein.

4. The positioning device for crane hoisting according to claim 3, characterized in that: The delay mechanism also includes a second wedge block (505), the bottom of the sliding plate (503) is fixedly connected to the second wedge block (505), the second wedge block (505) is used in conjunction with the sliding frame (5012), the second wedge block (505) is inserted into the C-shaped groove of the horizontal plate (5011) and slides therein.

5. A positioning device for crane hoisting according to claim 4, characterized in that: The delay mechanism also includes a rectangular block (601), the bottom of the sliding frame (5012) is fixedly connected to the rectangular block (601), the inner wall of the swivel frame (208) is slidably connected to a connecting rod (602), a third tension spring is provided between the connecting rod (602) and the inner wall of the swivel frame (208), a locking block (603) is fixedly connected to the outer wall of the connecting rod (602), and a wedge-shaped groove that cooperates with the locking block (603) is opened on one side of the rectangular block (601).

6. A positioning device for crane hoisting according to claim 5, characterized in that: It also includes an unlocking block (701), which is fixed to the bottom of the horizontal plate (5011). The unlocking block (701) works in conjunction with the locking block (603).

7. A positioning device for crane hoisting according to claim 2, characterized in that: It also includes an extension mechanism, which includes an L-shaped plate (801), and the outer walls of several sliding rods (207) are fixed to the L-shaped plate (801). A pressing plate (802) is hinged to one side of the L-shaped plate (801). A first protruding shaft that cooperates with the pressing plate (802) is fixed to the outer wall of the L-shaped tube (302). An elastic telescopic shaft (803) is fixed to the bottom of the shaped frame (208). The fixed end of the second telescopic rod (209) is fixed to the telescopic end of the elastic telescopic shaft (803). A contact rod (804) that cooperates with the pressing plate (802) is fixed to the telescopic end of the elastic telescopic shaft (803).

8. A positioning device for crane hoisting according to claim 7, characterized in that: The extension mechanism also includes a second elastic telescopic rod (901), which is fixedly connected to one side of the C-shaped frame (208). The telescopic end of the second elastic telescopic rod (901) is slidably connected to the outer wall of the sliding rod (207). An airbag (902) is connected to the outer wall of the fixed end of the second elastic telescopic rod (901). A hose is connected between the airbag (902) and the second telescopic rod (209).

9. A positioning device for crane hoisting according to claim 8, characterized in that: It also includes an elastic limiting pin (1001), and a cylindrical groove is provided on the inner wall of the fixed end of the second telescopic rod (209). The elastic limiting pin (1001) is slidably connected in the cylindrical groove and an electromagnet (1002) is fixedly installed therein. A limiting groove is provided on the outer wall of the telescopic end of the second telescopic rod (209) to cooperate with the elastic limiting pin (1001). A magnetic block is fixedly connected to one end of the elastic limiting pin (1001).

Images