Linkage type unpowered automatic bag grabbing and unloading hanging bracket

Abstract

A linkage type unpowered automatic bag grabbing and unloading hanging bracket comprises a self-positioning rotary tower tray, a hoisting platform, a linkage assembly and a plurality of unpowered lifting hooks, and a self-locking hook is arranged on the outer wall of each unpowered lifting hook; the linkage assembly comprises a bearing seat, a linkage shaft and a rotating block; linkage blocks are arranged at the two ends of the linkage shaft correspondingly, the right ends of the linkage blocks are rotationally connected with the top of the first self-locking hook located on the left side through a first left connecting rod, and the tops of every two adjacent self-locking hooks on the left side are rotationally connected through a second left connecting rod; the left end of the linkage block is rotationally connected with the top of the first self-locking hook located on the right side through a first right connecting rod, and the tops of every two adjacent self-locking hooks on the right side are rotationally connected through a second right connecting rod. A slide way is arranged in the rotating block, and a heavy hammer is arranged in the slide way. According to the unpowered lifting hook, the linkage assembly can simultaneously drive the unpowered lifting hooks to automatically grab and unload the hooks, so that the operation efficiency is improved, the position of each unpowered lifting hook is fixed, shaking is avoided, and the package grabbing position is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, in particular to a linkage type non-powered automatic bag grabbing and unloading hanger. Background Art

[0002] At present, the unhooking methods used in hoisting operations are mainly divided into pneumatic unhooking and manual unhooking that relies entirely on manual handling. When the manual method is used, the operator needs to climb above the hoisted object to assist in hooking. After the object is hoisted in place, the operator still needs to climb up to manually unhook. Since the hoisted objects are high, the operators frequently climb up and down, which can easily cause people to fall and the hoisting equipment to injure people, resulting in slow hoisting speed and greater danger, resulting in higher costs; and when the pneumatic unhooking method is used, during the operation, the operator still needs to climb to complete the auxiliary hooking operation, and there is also a risk of injury. In the automatic unhooking operation, the consumption of nitrogen is also very large, and nitrogen needs to be frequently replenished and replaced, which invisibly increases the intensity of dock operations and hoisting costs.

[0003] The above two methods require operators to operate or assist in operation, which poses a safety hazard of injury to operators. Therefore, a non-powered automatic hook grabbing and unhooking sling and hanger (CN2024101300736) has appeared in the prior art. Although the hanger can automatically grab and unhook without manual or other external forces during the entire operation process, each sling is independent, and the top of the sling is installed at the bottom of the lifting platform through a lifting chain, which is prone to shaking, resulting in inaccurate positioning when grabbing the bag. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a linkage type non-powered automatic bag grabbing and unloading hanger, which drives each non-powered hook to automatically grab and unload the hook at the same time through the linkage component, and the position of each non-powered hook is fixed and will not shake, so that the bag grabbing position is more accurate.

[0005] A linkage type non-powered automatic bag grabbing and unloading hanger, comprising a self-positioning rotary tower plate installed on a crane, a lifting platform located below the self-positioning rotary tower plate and connected to the self-positioning rotary tower plate through an external lifting chain, a linkage component installed in the middle of the lifting platform, and a plurality of non-powered hooks symmetrically installed on both sides of the bottom of the lifting platform, each of the non-powered hooks having a self-locking hook on its outer wall; The linkage assembly includes a bearing seat installed at the bottom of the hoisting platform, a linkage shaft arranged in the bearing seat, and a rotating block fixedly installed on the linkage shaft; Linkage blocks are respectively provided at both ends of the linkage shaft, the right end of the linkage block is rotatably connected to the top of the first self-locking hook on the left side through the first left connecting rod, and the tops of two adjacent self-locking hooks on the left side are rotatably connected through the second left connecting rod, the left end of the linkage block is rotatably connected to the top of the first self-locking hook on the right side through the first right connecting rod, and the tops of two adjacent self-locking hooks on the right side are rotatably connected through the second right connecting rod; A slide is provided in the rotating block, and a heavy hammer is provided in the slide. Both ends of the heavy hammer are connected to the bottom of the self-positioning rotary tower plate through an internal suspension chain. One end of the slide is a locking position, and the other end is an unlocking position. When the heavy hammer slides from the locking position to the unlocking position, and the unlocking position rotates to the top of the linkage shaft, the linkage block rotates and simultaneously drives all the self-locking hooks to unlock.

[0006] Preferably, the linkage shaft is located on the perpendicular midline of the slideway.

[0007] Preferably, the weight includes a sliding shaft and shaft ends disposed at both ends of the sliding shaft; The shaft end is connected to the inner suspension chain, and the sliding shaft is located in the slideway.

[0008] Preferably, short grooves communicating with the slide are respectively provided at both ends of the slide, and the linkage shaft is located on the bisector of the angle formed by the long bisectors of the two short grooves.

[0009] Preferably, the linkage block is a strip-shaped structure or a Z-shaped structure.

[0010] Preferably, the unpowered hook comprises a lifting stroke plate installed at the bottom of the lifting platform, a first rotating shaft arranged at the bottom of the lifting stroke plate, an inner connecting rod and an outer connecting rod rotatably connected to the first rotating shaft, an inner claw rotatably connected to the other end of the inner connecting rod, an outer claw rotatably connected to the other end of the outer connecting rod, and a second rotating shaft rotatably connected to the middle part of the outer claw and the inner claw; A positioning counterweight block is installed on the second rotating shaft, and an avoidance slot is provided in the positioning counterweight block, and the outer claw and the inner claw are located in the avoidance slot; The middle part of the self-locking hook is rotatably mounted on the first rotating shaft, the hook at the bottom hooks the second rotating shaft, and the top is rotatably connected to the first left connecting rod, the second left connecting rod, the first right connecting rod or the second right connecting rod.

[0011] Preferably, a stop shaft is provided in the avoidance groove to separate the inner claw from the outer claw, and an arc-shaped leaf spring is provided on the stop shaft, and an opening of the arc-shaped leaf spring is bent downward.

[0012] Preferably, a spring is provided on the rear end of the first rotating shaft, one twist foot of the spring is clamped on the bottom of the inner connecting rod, and the other twist foot is clamped on the bottom of the outer connecting rod.

[0013] Preferably, a groove is provided on the top of the lifting travel plate, and the groove is connected to the lifting platform by bolts; The rod lengths of the first left connecting rod, the second left connecting rod, the first right connecting rod and the second right connecting rod are adjustable.

[0014] Preferably, legs are rotatably mounted on the ends and sides of the hoisting platform, and the distance between the legs and the hoisting platform can be adjusted.

[0015] Compared with the prior art, the present invention has the following beneficial effects: First, the linkage assembly can drive multiple non-powered hooks to automatically grab and unhook at the same time, thereby improving work efficiency. In addition, the position of each non-powered hook is fixed and will not shake, making the bag grabbing position more accurate. Second, the self-positioning rotary tower has a self-positioning function, which can lock the position angle of the hanger when grabbing and unloading bags to ensure that the hanger will not swing or rotate at will, thereby improving work efficiency; Third, the entire process can achieve automatic hook grabbing and unhooking without manual or other external forces, thereby improving efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the linkage type non-powered automatic bag grabbing and unloading hanger in the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the middle linkage component; Figure 3 for Figure 1 A schematic diagram of a structure in which multiple unpowered hooks are connected together; Figure 4 for Figure 1 Schematic diagram of the structure of the non-powered hook; Figure 5 for Figure 4 Schematic diagram of the structure of the non-powered hook after removing the counterweight; Figure 6 It is a schematic diagram of the structure of the two unpowered hooks located in the middle position in the present invention in the initial state; Figure 7 It is a schematic diagram of the action flow of two unpowered hooks located in the middle position in the process of hook grabbing and hook unloading in the present invention (from left to right, from top to bottom); Figure 8 It is a front view of a linkage type non-powered automatic bag grabbing and unloading hanger in another embodiment of the present invention; Fig. 9 for Figure 8 Side view of the center linkage type non-powered automatic bag grabbing and unloading hanger; Fig.10 for Figure 8 Schematic diagram of the structure of the unpowered hook.

[0017] Description of main component symbols: 100-self-positioning rotary tower plate; 200-external lifting chain; 300-lifting platform; 30-outrigger; 400- linkage assembly; 40- bearing seat; 41- linkage shaft; 42- rotating block; 421- slideway; 422- short slot; 43- linkage block; 44- first left connecting rod; 45- second left connecting rod; 46- first right connecting rod; 47- second right connecting rod; 48- weight; 481- sliding shaft; 482- shaft end; 49- inner lifting chain; 500-unpowered hook; 50-lifting stroke plate; 501-slot; 51-first rotating shaft; 52-inner connecting rod; 53-outer connecting rod; 54-inner claw; 55-outer claw; 56-second rotating shaft; 57-positioning counterweight; 571-avoidance slot; 572-blocking shaft; 58-arc leaf spring; 59-spring; 600-Self-locking hook; 700-Suspended bag.

[0018] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] See also Figures 1 to 7 In one embodiment of the present invention, a linkage type non-powered automatic bag grabbing and unloading hanger is provided, comprising a self-positioning rotary tower plate 100 installed on a crane, a lifting platform 300 located below the self-positioning rotary tower plate 100 and connected to the self-positioning rotary tower plate 100 through an external lifting chain 200, a linkage assembly 400 installed in the middle of the lifting platform 300, and a plurality of non-powered hooks 500 symmetrically installed on both sides of the bottom of the lifting platform 300, each of the non-powered hooks 500 having a self-locking hook 600 provided on the outer wall thereof; The linkage assembly 400 includes a bearing seat 40 installed at the bottom of the hoisting platform 300, a linkage shaft 41 disposed in the bearing seat 40, and a rotating block 42 fixedly installed on the linkage shaft 41; Both ends of the linkage shaft 41 are provided with linkage blocks 43, the right end of the linkage block 43 is rotatably connected to the top of the first self-locking hook 600 on the left side through the first left connecting rod 44, and the tops of the two adjacent self-locking hooks 600 on the left side are rotatably connected through the second left connecting rod 45, the left end of the linkage block 43 is rotatably connected to the top of the first self-locking hook 600 on the right side through the first right connecting rod 46, and the tops of the two adjacent self-locking hooks 600 on the right side are rotatably connected through the second right connecting rod 47; A slide 421 is provided in the rotating block 42, and a weight 48 is provided in the slide 42. Both ends of the weight 48 are connected to the bottom of the self-positioning rotary tower plate 100 through an internal suspension chain 49. One end of the slide 42 is a locking position, and the other end is an unlocking position. When the weight 42 slides from the locking position to the unlocking position, and the unlocking position rotates to the top of the linkage shaft 41, the linkage block 43 rotates and simultaneously drives all the self-locking hooks 600 to unlock.

[0021] It should be noted that, in the present invention, the lifting bag 700 is first pressed by the unpowered lifting hook 500 to make the lifting belt bulge, the self-positioning rotary tower plate 100 and the lifting platform 300 are lowered, and the weight 48 slides down from the locked position to the unlocked position under the action of its own gravity, and then the self-positioning rotary tower plate 100 and the lifting platform 300 are raised, and the weight 48 rises and drives the rotating block 42 and the linkage block 43 to rotate, and the linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, thereby an unlocking action occurs; The self-positioning rotary tower plate 100 and the lifting platform 300 continue to rise, and the clamping claws at the bottom of the unpowered hook 500 move closer to each other and hook the lifting belt. Under the gravity of the lifting bag 700, the clamping claws move closer to each other and will not loosen. After the lifting bag 700 is transported to the designated position, the self-positioning rotating tower plate 100 and the lifting platform 300 descend, the clamping claws at the bottom of the unpowered lifting hook 500 expand each other and release the lifting belt, and at the same time, the weight 48 slides down from the unlocking position to the locking position under the action of its own gravity, and then the self-positioning rotating tower plate 100 and the lifting platform 300 rise, the weight 48 rises and drives the rotating block 42 and the linkage block 43 to rotate, and the linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, thereby a locking action occurs to facilitate secondary lifting operations.

[0022] In the present invention, the entire action process does not require manual or other external forces, but the automatic hook grabbing and unhooking is achieved through the action of the mechanism itself, thereby improving the lifting efficiency and saving costs.

[0023] In a preferred embodiment of the present invention, a PLC controller embedded with an electronic compass or a GPS sensor is installed in the self-positioning rotary tower plate 100, so that the self-positioning rotary tower plate 100 has a self-positioning function, which can lock the position angle of the hanger when grabbing and unloading bags to ensure that the hanger will not swing or rotate at will, thereby improving work efficiency.

[0024] See also Figures 1 to 3 In a preferred embodiment of the present invention, the linkage shaft 41 is located on the perpendicular midline of the slideway 421 to facilitate the rotation of the rotating block 42.

[0025] See also Figures 1 to 3 In a preferred embodiment of the present invention, the weight 48 includes a sliding shaft 481 and shaft ends 482 disposed at both ends of the sliding shaft 481; The shaft end 482 is connected to the inner suspension chain 49 , and the sliding shaft 481 is located in the slideway 421 , so that the weight 48 is evenly stressed.

[0026] See also Figures 1 to 3 In a preferred embodiment of the present invention, short slots 422 communicating with the slideway 421 are respectively provided at both ends of the slideway 421, and the linkage shaft 41 is located on the angular bisector of the angle formed by the long bisectors of the two short slots 421. One of the short slots 422 corresponds to the unlocking position, and the other short slot corresponds to the locking position, which is used to prevent the weight 48 from malfunctioning when it is in the locking position or the unlocking position.

[0027] See also Figures 1 to 3 In a preferred embodiment of the present invention, the linkage block 43 is a bar-shaped structure or a Z-shaped structure, so as to be connected with the first left connecting rod 44 and the first right connecting rod 46, and when rotating, it generates thrust to the first left connecting rod 44 and the first right connecting rod 46 respectively.

[0028] See also Figures 4 to 7 In a preferred embodiment of the present invention, the unpowered hook 500 includes a lifting stroke plate 50 installed at the bottom of the lifting platform 300, a first rotating shaft 51 provided at the bottom of the lifting stroke plate 50, an inner connecting rod 52 and an outer connecting rod 53 rotatably connected to the first rotating shaft 51, an inner claw 54 rotatably connected to the other end of the inner connecting rod 52, an outer claw 55 rotatably connected to the other end of the outer connecting rod 53, and a second rotating shaft 56 rotatably connected to the middle of the outer claw 55 and the inner claw 54; A positioning counterweight block 57 is mounted on the second rotating shaft 56. An avoidance slot 571 is provided in the positioning counterweight block 57. The outer claw 55 and the inner claw 54 are located in the avoidance slot 571. The middle part of the self-locking hook 600 is rotatably mounted on the first rotating shaft 51, the bottom hook hooks the second rotating shaft 56, and the top is rotatably connected to the first left connecting rod 44, the second left connecting rod 45, the first right connecting rod 46 or the second right connecting rod 47.

[0029] It should be noted that, in the present invention, the lifting bag is first pressed by the positioning counterweight block 57 so that the lifting belt is raised, the self-positioning rotary tower plate 100 and the lifting platform 300 are lowered, and the weight 48 slides down from the locked position to the unlocked position under the action of its own gravity, and then the self-positioning rotary tower plate 100 and the lifting platform 300 are raised, and the weight 48 rises and drives the rotating block 42 and the linkage block 43 to rotate, and the linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, so that the self-locking hook 600 is disengaged from the second rotating shaft 56, thereby an unlocking action occurs; The self-positioning rotary tower plate 100 and the hoisting platform 300 continue to rise, and the four-bar linkage mechanism composed of the inner connecting rod 52, the outer connecting rod 53, the outer claw 55 and the inner claw 54 will make the outer claw 55 and the inner claw 54 move closer to each other and hook the sling. Under the gravity of the sling bag, the outer claw 55 and the inner claw 54 will move closer and will not be loosened; After the lifting bag is transported to the designated position, the self-positioning rotary tower plate 100 and the lifting platform 300 descend, and the four-bar linkage composed of the inner connecting rod 52, the outer connecting rod 53, the outer claw 55 and the inner claw 54 will cause the outer claw 55 and the inner claw 54 to expand with each other and loosen the lifting belt. At the same time, the weight 48 slides down from the unlocking position to the locking position under the action of its own gravity, and then the self-positioning rotary tower plate 100 and the lifting platform 300 rise, and the weight 48 rises and drives the rotating block 42 and the linkage block 43 to rotate, and the linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, so that the self-locking hook 600 hooks the second rotating shaft 56, thereby locking the self-locking hook 600 to facilitate secondary lifting operations.

[0030] See also Figure 5 and Figure 6 In a preferred embodiment of the present invention, a stop shaft 572 is provided in the avoidance slot 571 to separate the inner claw 54 from the outer claw 55, and an arc leaf spring 58 is provided on the stop shaft 572, and the opening of the arc leaf spring 58 is bent downward. During the process of lifting the bag, the outer claw 55 and the inner claw 54 are retracted, so that the arc leaf spring 58 is in a compressed state. After unloading the bag, the arc leaf spring 58 will generate an outward thrust on the outer claw 55 and the inner claw 54 under the action of its own restoring force, thereby helping the non-powered hook 500 to reset.

[0031] See also Figure 5 and Figure 6In a preferred embodiment of the present invention, a spring 59 is provided on the rear end of the first rotating shaft 51 , one twist foot of the spring 59 is clamped on the bottom of the inner connecting rod 52 , and the other twist foot is clamped on the bottom of the outer connecting rod 53 .

[0032] Specifically, the bottom edges of the inner connecting rod 52 and the outer connecting rod 53 are respectively provided with a bayonet, and the two twisting feet of the spring 59 are correspondingly located in one of the bayonet to prevent the twisting feet from sliding. During the process of hanging the bag, since the inner connecting rod 52 and the outer connecting rod 53 are retracted, the spring 59 is in a compressed state. After unloading the bag, under the action of the restoring force of the spring 59 itself, an outward thrust will be generated on the inner connecting rod 52 and the outer connecting rod 53, thereby facilitating the reset of the unpowered hook 500.

[0033] See also Figure 8 and Fig. 9 In a preferred embodiment of the present invention, the ends and sides of the hoisting platform 300 are rotatably mounted with legs 30, and the distance between the legs 30 and the hoisting platform can be adjusted. The legs 30 are manually folded and lowered, and all the legs 30 can be adjusted in position at the connection part with the hoisting platform 300 to adapt to hoisting objects of different widths.

[0034] It should be noted that when no lifting operation is performed, the surrounding legs 30 play a supporting role to ensure that all the unpowered hooks 500 do not contact the ground; During the hoisting operation, according to the location and size of the hoisted object on site, the operator only retracts the legs 30 on one side and one end, and adjusts the distance between the legs 30 on the other side and one end and the hoisting platform 300; When performing hoisting operations, when the self-positioning rotary tower plate 100 is executing the bag grabbing angle, the crane can directly move the legs 30 on both sides close to the hoisted object for rapid and accurate positioning and subsequent bag grabbing operations. When moving to the bag unloading location to unload the bag, the bag is unloaded by positioning the bag unloading angle of the self-positioning rotary tower plate 100; During the entire working cycle, as long as the size of the hoisted object does not change, the position of the outrigger 30 will not be adjusted.

[0035] See also Figures 8 to 10 In a preferred embodiment of the present invention, a groove 501 is provided on the top of the lifting travel plate 50, and the groove 501 is connected to the lifting platform 300 by bolts, so that the position of the unpowered hook 500 on the lifting platform 300 can be adjusted; The rod lengths of the first left connecting rod, the second left connecting rod, the first right connecting rod and the second right connecting rod can be adjusted, so that the distance between two adjacent unpowered hooks 500 can be adjusted.

[0036] It should be noted that, due to the different sizes of lifting bags in different countries, the spacing of the non-powered hooks 500 is set to be adjustable, as well as the distance between the legs 30 and the lifting platform 300, so as to adapt to different usage requirements.

[0037] In a preferred embodiment of the present invention, a plurality of cameras are installed on the side wall of the hoisting platform 300, and each of the cameras corresponds to the position of one of the non-powered hooks 500. The cameras allow the operator to quickly observe the position of each non-powered hook 500, and the bag grabbing action can be achieved as long as the sling of the bag is within ±100mm of the bottom hook groove of the non-powered hook 500.

[0038] It should be noted that during the lifting operation, the following steps are performed: Step S11, driving the crane to a position between the lifting position and the storage position, and parking the crane; Step S12, rotating the hanger to above the lifting position by means of a crane, and using a wireless remote controller to send a first control instruction to a PLC controller to control the self-positioning rotary tower plate to rotate so that the lifting platform rotates to a suitable bag grabbing angle; Step S13, using a wireless remote controller to send a first storage instruction to the PLC controller, so that the PLC controller stores the packet capture angle; Step S14, the hanger is rotated to above the storage position by the crane, and a second control instruction is sent to the PLC controller by a wireless remote controller to control the self-positioning rotary tower plate 100 to rotate so that the lifting platform 300 rotates to a suitable unloading angle; Step S15, using a wireless remote controller to send a second storage instruction to the PLC controller, so that the PLC controls the storage of the unloading angle; Step S16, according to the location and size of the hoisted object on site, the operator retracts the outriggers 30 on one side and one end, and adjusts the distance between the outriggers 30 on the other side and one end and the hoisting platform 300; Step S17, the operator presses the bag grabbing command through the wireless remote control, the crane rotates the hanger to the top of the lifting position, the self-positioning rotary tower plate 100 rotates so that the lifting platform 300 rotates to a suitable bag grabbing angle, and the side of the hanging bag 700 is positioned by the outrigger 30; Step S18, first press the lifting bag by positioning the counterweight block 57 so that the lifting belt bulges, the self-positioning rotary tower plate 100 and the lifting platform 300 descend, the weight 48 slides down from the locked position to the unlocked position under the action of its own gravity, and then the self-positioning rotary tower plate 100 and the lifting platform 300 rise, the weight 48 rises and drives the rotating block 42 and the linkage block 43 to rotate, and the linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, so that the self-locking hook 600 is disengaged from the second rotating shaft 56, thereby unlocking the self-locking hook 600; Step S19, the self-positioning rotary tower plate 100 and the hoisting platform 300 continue to rise, and the four-bar linkage composed of the inner connecting rod 52, the outer connecting rod 53, the outer claw 55 and the inner claw 54 will make the outer claw 55 and the inner claw 54 move closer to each other and hook the sling to grab the bag. Under the gravity of the bag, the outer claw 55 and the inner claw 54 will move closer and will not be loosened. During the lifting process, the legs 30 are controlled to be retracted through the PLC controller; In step S20, the operator presses the unloading command through the wireless remote control. After the crane rotates the hanger to the specified position, the self-positioning rotary tower plate 100 and the lifting platform 300 descend, and the four-bar linkage composed of the inner connecting rod 52, the outer connecting rod 53, the outer claw 55 and the inner claw 54 will cause the outer claw 55 and the inner claw 54 to unfold each other and loosen the sling to unload the bag. At the same time, the heavy hammer 48 slides down from the unlocking position to the locking position under the action of its own gravity, and then the self-positioning rotary tower plate 100 and the lifting platform 300 rise, and the heavy hammer 48 rises and drives the rotating block 42 and the linkage block 43 to rotate. The linkage block 43 pulls the corresponding self-locking hook 600 to rotate through each connecting rod, so that the self-locking hook 600 hooks the second rotating shaft 56, thereby locking the action to facilitate the secondary lifting operation.

[0039] Specifically, during the operation, after the operator stores and sets the bag grabbing angle and bag unloading angle through the wireless remote controller, the angles of each subsequent lifting action and each storage action are locked. Even if there is a deviation, the lifting platform 300 will automatically return to the bag grabbing angle and bag unloading angle under the action of the electronic compass or GPS sensor. Furthermore, the above operation steps can adjust the lifting movement speed according to the actual situation of the on-site lifting objects.

[0040] Compared with the prior art, the present invention has the following beneficial effects: First, the linkage assembly 400 can simultaneously drive multiple non-powered hooks 500 to automatically grab and unhook, thereby improving the working efficiency, and the position of each non-powered hook 500 is fixed and will not shake, making the bag grabbing position more accurate; Second, the self-positioning rotary tray 100 has a self-positioning function, which can lock the position angle of the hanger when grabbing and unloading bags to ensure that the hanger will not swing or rotate at will, thereby improving the working efficiency; Third, the entire process can achieve automatic hook grabbing and unhooking without manual or other external forces, thereby improving efficiency and saving costs.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A linkage type unpowered automatic bag grabbing and unloading hanger, characterized in that: It includes a self-positioning slewing tower plate installed on a crane, a hoisting platform located below the self-positioning slewing tower plate and connected to the self-positioning slewing tower plate through an external hoisting chain, a linkage component installed in the middle of the hoisting platform, and a plurality of unpowered hooks symmetrically installed on both sides of the bottom of the hoisting platform, and a self-locking hook is provided on the outer wall of each of the unpowered hooks; The linkage assembly includes a bearing seat installed at the bottom of the hoisting platform, a linkage shaft arranged in the bearing seat, and a rotating block fixedly installed on the linkage shaft; Linkage blocks are respectively provided at both ends of the linkage shaft, the right end of the linkage block is rotatably connected to the top of the first self-locking hook on the left side through the first left connecting rod, and the tops of two adjacent self-locking hooks on the left side are rotatably connected through the second left connecting rod, the left end of the linkage block is rotatably connected to the top of the first self-locking hook on the right side through the first right connecting rod, and the tops of two adjacent self-locking hooks on the right side are rotatably connected through the second right connecting rod; A slide is provided in the rotating block, and a heavy hammer is provided in the slide. Both ends of the heavy hammer are connected to the bottom of the self-positioning rotary tower plate through an internal suspension chain. One end of the slide is a locking position, and the other end is an unlocking position. When the heavy hammer slides from the locking position to the unlocking position, and the unlocking position rotates to the top of the linkage shaft, the linkage block rotates and simultaneously drives all the self-locking hooks to unlock.

2. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 1 is characterized in that: The linkage shaft is located on the mid-perpendicular line of the slideway.

3. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 1 is characterized in that: The weight includes a sliding shaft and shaft ends arranged at both ends of the sliding shaft; The shaft end is connected to the inner suspension chain, and the sliding shaft is located in the slideway.

4. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 1 is characterized in that: Short grooves communicating with the slideway are respectively provided at both ends of the slideway, and the linkage shaft is located on the bisector of the angle formed by the long bisectors of the two short grooves.

5. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 1 is characterized in that: The linkage block is a strip-shaped structure or a Z-shaped structure.

6. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 1 is characterized in that: The unpowered hook comprises a lifting stroke plate installed at the bottom of the lifting platform, a first rotating shaft arranged at the bottom of the lifting stroke plate, an inner connecting rod and an outer connecting rod rotatably connected to the first rotating shaft, an inner claw rotatably connected to the other end of the inner connecting rod, an outer claw rotatably connected to the other end of the outer connecting rod, and a second rotating shaft rotatably connected to the middle of the outer claw and the inner claw; A positioning counterweight block is installed on the second rotating shaft, and an avoidance slot is provided in the positioning counterweight block, and the outer claw and the inner claw are located in the avoidance slot; The middle part of the self-locking hook is rotatably mounted on the first rotating shaft, the hook at the bottom hooks the second rotating shaft, and the top is rotatably connected to the first left connecting rod, the second left connecting rod, the first right connecting rod or the second right connecting rod.

7. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 6 is characterized in that: A blocking shaft is arranged in the avoidance groove to separate the inner claw from the outer claw, and an arc-shaped leaf spring is arranged on the blocking shaft, and an opening of the arc-shaped leaf spring is bent downward.

8. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 6 is characterized in that: A spring is arranged on the rear end of the first rotating shaft, one twist foot of the spring is clamped on the bottom of the inner connecting rod, and the other twist foot is clamped on the bottom of the outer connecting rod.

9. The linkage type non-powered automatic bag grabbing and unloading hanger according to claim 6 is characterized in that: A groove is provided on the top of the lifting stroke plate, and the groove is connected to the lifting platform by bolts; The rod lengths of the first left connecting rod, the second left connecting rod, the first right connecting rod and the second right connecting rod are adjustable.

10. The linkage type non-powered automatic bag grabbing and unloading hanger according to any one of claims 1 to 9, characterized in that: The ends and sides of the hoisting platform are rotatably mounted with supporting legs, respectively, and the distance between the supporting legs and the hoisting platform can be adjusted.

Images