Unpowered lifting appliance capable of automatically hooking and unhooking

Abstract

The utility model relates to an unpowered lifting appliance capable of automatically hooking and unhooking in the technical field of mechanical hooks, which comprises a lifting rod and a lifting hook, an n-shaped long through gap is formed in the middle of the lower end of the lifting rod along the length direction, and the upper part of the lifting hook is movably pinned in the middle of the bottom of the long through gap; the lifting hook is a weighting block capable of swinging left and right in the long through gap by virtue of self gravity, a hanging part capable of swinging out of one side of the long through gap is arranged at the upper end of the lifting hook, and a V-shaped barb part is arranged at the lower end of the lifting hook. The lifting rod is of a linear columnar structure, the lifting hook is of a rectangular plate-shaped structure, chamfers are formed in the two corners of the hanging part, the thickness of the lifting hook is smaller than the width of the long through gap, the length of the long through gap is smaller than that of the lifting hook, and the upper portion of the lifting hook is movably connected with the two side walls of the long through gap through pins. According to the lifting appliance, automatic hooking and unhooking can be achieved through the gravity of a workpiece and the gravity of the hook, operation is easy, the working efficiency can be remarkably improved, and the development process that a robot replaces manual work is promoted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical hook technical field, concretely relates to a kind of automatic hook and unhooking's unpowered lifting appliance. BACKGROUND

[0002] Belt conveyor is also called rubber belt conveyor or belt machine, and it is a common bulk material conveying equipment, which plays an important role in coal mining, tunnel excavation and other work processes. Its structure mainly includes rack, conveying belt, roller set, roller bracket and driving mechanism, etc. The roller set is divided into upper roller set and lower roller set, and both of them are composed of several rollers. The roller is composed of roller, roller shaft and bearing. During the production of roller, its surface needs to be painted. The painting process requires that only the outer surface of the roller can be painted, and the inner surface of the roller cannot be painted. Because the bearing needs to be matched and pressed on the inner surface of the roller, the inner surface of the roller cannot be painted to ensure the stability of the interference fit between the bearing and the inner surface of the roller. During the painting of the roller, in order to improve the painting efficiency, several rollers are vertically hung on the painting frame in an orderly manner, and then overall painting is carried out. After painting, the painted rollers are taken off one by one from the roller hooks of the painting frame. At present, the hanging and taking off of the rollers on the painting frame are mainly operated by manual operation, which is repetitive and tedious. The existing roller hook structure is too simple, which is not conducive to the hanging and unhooking of the roller, resulting in low work efficiency. The main reason is that there is no hooking lifting appliance that can realize the automatic hanging and unhooking of the roller. This also limits the technical innovation of robots replacing manual work. Therefore, it is necessary to design a roller lifting appliance that can easily realize automatic hanging and unhooking. CONTENT OF THE UTILITY MODEL

[0003] In view of the above situation, the utility model provides a kind of automatic hook and unhooking's unpowered lifting appliance, utilizes gravity to realize the automatic hanging and unhooking of the roller, and the structure is simple, easy to manufacture and low in cost, suitable for batch modification and popularization on the basis of existing painting frame.

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

[0005] The utility model provides an automatic hooking and unhooking unpowered lifting appliance, which comprises a hanging assembly, the hanging assembly comprises a lifting rod and a hook, a long through slit is formed in the lower end of the lifting rod along the length direction, the upper part of the hook is pivotally connected to the middle of the bottom of the long through slit, the hook is a weight block capable of swinging left and right in the long through slit by gravity, the upper end of the hook is provided with a hooking part capable of swinging out of the long through slit, and the lower end of the hook is provided with a barb part.

[0006] Further, the lifting rod is a straight columnar structure, the long through slit is in the shape of n, the hook is a rectangular plate structure, the barb part is in the shape of square root, both corners of the hooking part are provided with chamfers, the thickness of the hook is less than the width of the long through slit, the length of the long through slit is less than the length of the hook, and the upper part of the hook is pivotally connected to the two side walls of the long through slit. Preferably, the upper end of the lifting rod is provided with a mounting hole for connecting a paint spraying frame.

[0007] Further, the unpowered lifting appliance is suitable for roller spraying operation of a carrier roller and further comprises a carrier roller assembly and a sealing assembly; the carrier roller assembly comprises a roller, a roller shaft and a bearing, the roller is in the shape of a cylinder, coaxial welding is carried out on the upper and lower ends of the roller to form bearing seats for positioning the bearing, and a center hole is formed in the center of the bearing seat and can be passed through by the roller shaft; the sealing assembly comprises upper and lower seals for detachably sealing the upper and lower ends of the roller.

[0008] Further, the upper seal comprises a circular upper cover plate matched with the inner diameter of the roller, a reverse tapered guide surface is integrally connected to the lower side of the upper cover plate, an eccentric hole is formed in the upper cover plate and can be passed through by the lifting rod, the upper seal can slide up and down on the outside of the lifting rod, and a first and a second accommodation slot are respectively formed in the left and right sides of the guide surface and can accommodate the barb part and the hooking part. Preferably, the upper seal is integrally formed by casting with plastic material.

[0009] Further, the lower seal comprises a disc-shaped lower cover plate, a center plug is integrally connected to the upper side of the lower cover plate and can be inserted into the center hole of the bearing seat to plug the center hole, and a plurality of elastic spring sheets are arranged on the circumference of the center plug. Preferably, the number of the elastic spring sheets is three.

[0010] Further, the eccentric hole is a runway-shaped directional through hole, a directional cutting surface matched with the directional through hole is formed in the outer side wall of the lifting rod, and the upper seal can be prevented from rotating circumferentially when sliding up and down on the outside of the lifting rod.

[0011] Further, a breathing hole is formed in the center of the upper cover plate and can be used for breathing in and out when the roller is sealed.

[0012] The utility model also includes other components that can make it normal use, all are the conventional means of the field, in addition, the device or component that is not added in the utility model, such as: the roller of supporting roller assembly, roll axle, bearing seat and bearing, and the elastic spring piece of lower seal etc., all adopt the prior art of the field.

[0013] The utility model has the advantages of the following:

[0014] The utility model provides a kind of automatic hooking and unhooking's unpowered lifting appliance, device structure is simple, easy to make, low in cost, it is favorable to realize large quantities of reform and popularization on the basis of existing paint spraying frame;The unpowered lifting appliance does not need any power drive mechanism, only utilizes roller self gravity to realize automatic hooking, utilizes hook self gravity to realize automatic unhooking, it is very convenient to hang roller to paint spraying frame and to pick roller down, easy to operate, save time and effort, can significantly improve work efficiency, also help to promote the development process of robot to replace human operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of unpowered lifting appliance in the utility model.

[0016] Figure 2 It is Figure 1 the three-dimensional structure schematic diagram of hanging assembly in the utility model.

[0017] Figure 3 It is Figure 1 the three-dimensional structure schematic diagram of upper seal in the utility model.

[0018] Figure 4 It is Figure 1 the three-dimensional structure schematic diagram of lower seal in the utility model.

[0019] Figure 5 It is Figure 1 the state structure schematic diagram when hanging assembly hooks in the utility model.

[0020] Figure 6 It is Figure 5 the state structure schematic diagram when unhooking in the utility model.

[0021] Figure 7 It is Figure 6 the state structure schematic diagram when unhooking in the utility model.

[0022] Figure 8 It is Figure 7 the state structure schematic diagram when picking hook in the utility model. DETAILED DESCRIPTION

[0023] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0024] It should be noted that the terms "up," "down," "front," "back," "left," "right," "inner," and "outer," which indicate directions or positional relationships, are based on the attached drawings and are used only for ease of description.

[0025] Example 1

[0026] like Figure 2 As shown, a non-powered lifting device with automatic hooking and unhooking includes a lifting assembly. The lifting assembly includes a lifting rod 1 and a hook 2. The lower end of the lifting rod has a long continuous slit 3 centered along its length. The upper part of the hook is movably pinned to the middle of the bottom of the long continuous slit. The upper part of the hook is movably pinned to the two side walls of the long continuous slit via pins 4. The hook is an eccentric block that can swing left and right within the long continuous slit by its own weight. The weight of the part of the hook below the pin joint is greater than the weight of the part above the pin joint, that is, the center of gravity of the entire hook assembly is located at the lower part of the hook. The upper end of the hook is provided with a hanging part 5 that can swing out from one side of the long continuous slit. The lower end of the hook is provided with a barb part 6.

[0027] The lifting rod is a straight columnar structure. The long through-slit is n-shaped, i.e., an inverted U-shaped structure. The hook is a rectangular plate structure. The hook portion is √-shaped, and the length of the upper arm 7 of the hook-shaped hook portion is greater than the length of its lower arm 8. Both corners of the hanging portion are chamfered 9, and the chamfer is oblique. The thickness of the hook is less than the width of the long through-slit, ensuring that the hook can swing relatively freely left and right in the middle of the long through-slit. The length of the long through-slit is slightly less than the length of the upper arm of the hook's hook portion to prevent the hook from flipping upwards to the highest point and passing through the other side of the long through-slit. The upper end of the lifting rod has a mounting hole 10 for connecting to a paint spraying frame (not shown in the figure). The paint spraying frame uses existing technology and will not be described in detail here. Furthermore, it should be stated that this non-powered lifting device can be used for roller painting work, but it is not limited to this work. This non-powered lifting device can also be used for other work projects that require hanging operations with similar roller structures.

[0028] Example 2

[0029] like Figures 1-4 As shown, based on Embodiment 1, the non-powered lifting device is suitable for roller painting operations on idlers and also includes an idler assembly and a sealing assembly.

[0030] The carrier roller assembly comprises a roller 11, a roller shaft (not shown in the figure) and a bearing (not shown in the figure), the roller is a cylindrical structure, the upper and lower ends of the roller are coaxially welded with bearing seats 12 for positioning the bearing, and the center of the bearing seat is provided with a central hole 13 through which the roller shaft passes. The carrier roller assembly adopts the prior art, which will not be described in detail here.

[0031] The sealing assembly comprises upper and lower seals for detachably plugging the upper and lower ends of the roller, mainly to prevent the bearing mounting position of the two ends of the roller from being sprayed with paint.

[0032] As shown in Figure 3 The upper seal comprises a circular upper cover plate 14 matched with the inner diameter of the roller, the lower end of the upper cover plate is integrally connected with an inverted conical guide surface 15, the entire upper seal is integrally cast in plastic material, the upper cover plate is provided with an eccentric hole 16 through which the hanging rod can pass, the upper seal can slide up and down outside the hanging rod, the left and right sides of the guide surface are respectively provided with a first and a second clearance groove 17 and 18 for accommodating the hook portion and the hanging portion, the first clearance groove corresponds to the upper arm side of the longer hook portion, and the second clearance groove corresponds to the lower arm side of the shorter hook portion, therefore, the depth of the first clearance groove is correspondingly greater than that of the second clearance groove, so that when the hook portion of the hook rotates and swings to the upper side, it can be hidden in the corresponding clearance groove. In addition, the hook portion of the hook adopts this hook-shaped structure design with a slightly longer upper arm and a slightly shorter lower arm, mainly to enable the hook portion to more conveniently enter the central hole of the bearing seat of the roller, and to be well buckled in one side of the central hole of the bearing seat, while the hanging portion of the hook is matched and pressed against the other side of the central hole, thereby completing the gravity hanging of the roller. Moreover, the center of gravity of the hook is not on the middle line, and the upper arm of the hook can be slightly raised at an angle, which is beneficial to the upper arm being automatically hung above the inner side of the central hole when entering the central hole.

[0033] As shown in Figure 4 The lower seal comprises a disc-shaped lower cover plate 19, the upper end of the lower cover plate is integrally connected with a center plug 20 for pluggably blocking the central hole of the bearing seat, three elastic spring sheets 21 are annularly arranged at an interval of 120° on the circumference of the center plug, the three spring sheets are respectively fixedly connected to the outer side wall of the center plug through screws 22, and the cylindrical center plug is provided with three flat cutting surfaces corresponding to the positions where the three spring sheets are installed, the elastic extrusion force of the elastic spring sheets ensures that the lower seal can be reliably buckled at the lower end of the roller without falling off during paint spraying, and the lower seal can also be conveniently pried off after paint spraying.

[0034] The eccentric hole is a runway-shaped directional through hole, that is, the inner edge of a circular hole is filled with two symmetrical parallel straight edges 23, and the outer side wall of the hanger is provided with a directional cut surface matched with the directional through hole, that is, two mutually parallel flat cut surfaces 24 are symmetrically cut along the length direction of the cylindrical hanger, for matching to realize that the upper seal does not rotate circumferentially when sliding up and down on the outer side of the hanger.

[0035] The center of the upper cover plate is also provided with a breathing hole 25, for realizing breathing in and out of air when the roller is blocked, so as to balance the air pressure inside and outside the roller, facilitate smooth falling of the upper seal, and automatically cover the upper port of the roller.

[0036] The working principle of the utility model is as follows:

[0037] As shown in Figures 5-8 After the upper seal is arranged on the hanger, a plurality of hangers are correspondingly connected and installed on the paint spraying frame. When the roller is sprayed, the lower seal is used to block the lower end of the roller, then the roller is vertically held, the center hole of the bearing seat of the upper end of the roller is aligned and placed below the hook, then the roller is lifted upward, the hook is inserted into the center hole of the bearing seat, at the same time, the upper arm of the barb part of the hook is automatically hung on the inner side of one side of the center hole and is turned upward by a certain angle along with the upward lifting of the roller, then the lifting of the roller is stopped, the roller falls by a certain height, the hook is turned downward, at this time, the lower arm of the barb part is just buckled below the inner edge of the center hole, at the same time, the hook is buckled on the other side of the center hole, thereby preventing the roller from continuing to fall, playing a one-way check function, and the roller is hung below the hanger by using the gravity of the roller itself, that is, the automatic hooking of the roller is completed.

[0038] Then, after the roller is sprayed, the roller only needs to be held upward to a greater height again, so that the hook is turned upward by a larger amplitude, the hook is separated from the inner edge of the center hole of the bearing seat, the height of the roller is continuously lifted, the hook is completely inserted into the roller, the barb part of the hook is automatically turned down due to the gravity of the self-bias, and is relatively freely hung below the hanger, at this time, the roller is moved downward, the barb part of the hook has lost the one-way check function, the center hole of the bearing seat can be easily separated from the hook, the roller is taken down, and the automatic unhooking of the roller is completed. The whole hooking and unhooking process of the roller only needs three simple actions of aligning the center hole, lifting the roller upward and taking down the roller downward, and the three actions can be completed by manual operation or by a robot, so that the non-powered hanger can significantly improve the work efficiency of batch roller spraying, and is also helpful to promote the development process of the application robot.

[0039] The technical scheme of the utility model is not limited by the above specific embodiments, and many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments, and any technical modification made within the spirit and principle of the utility model falls within the protection scope of the utility model.

Claims

1. A self-hitching and unhitching, unpowered sling, characterized by: The hanging assembly comprises a boom and a hook, the lower end of the boom is centrally provided with a long through slit along the length direction, the upper part of the hook is pivotally connected to the middle of the bottom of the long through slit, the hook is a weight block capable of swinging left and right in the long through slit by its own gravity, the upper end of the hook is provided with a hooking part capable of swinging out of the long through slit, and the lower end of the hook is provided with a barb part.

2. A self-hitching and unhitching, unpowered sling according to claim 1, characterised in that: The boom is a straight columnar structure, the long through slit is n-shaped, the hook is a rectangular plate structure, the barb part is √-shaped, both corners of the hooking part are provided with chamfers, the thickness of the hook is less than the width of the long through slit, the length of the long through slit is less than the length of the hook, and the upper part of the hook is pivotally connected to the two side walls of the long through slit through a pin shaft.

3. A self-hitching and unhitching, unpowered sling according to claim 2, characterised in that: The roller assembly comprises a roller, a roller shaft and a bearing, the roller is a cylindrical structure, coaxially welded with bearing seats for positioning the bearing at the upper and lower ends of the roller, and the center of the bearing seat is provided with a center hole through which the roller shaft passes.

4. A self-hitching and unhitching, unpowered sling according to claim 3, characterised in that: The sealing assembly comprises an upper seal and a lower seal for detachably plugging the upper and lower ends of the roller.

5. A self-hitching and unhitching, unpowered sling according to claim 4, characterised in that: The upper seal comprises a circular upper cover plate matched with the inner diameter of the roller, the lower end of the upper cover plate is integrally connected with a reverse tapered guide surface, the upper cover plate is provided with an eccentric hole through which the boom can pass, the upper seal can slide up and down outside the boom, and the left and right sides of the guide surface are respectively provided with a first and a second accommodation slot for accommodating the barb part and the hooking part.

6. A self-hitching and unhitching, unpowered sling according to claim 5, characterised in that: The lower seal comprises a disc-shaped lower cover plate, the upper end of the lower cover plate is integrally connected with a center plug for plugging the center hole of the bearing seat, and the circumference of the center plug is provided with a plurality of elastic spring sheets.

7. A self-hitching and unhitching, unpowered sling according to claim 5, characterised in that: The eccentric hole is a runway-shaped directional through hole, and the outer side wall of the boom is provided with a directional cutting surface matched with the directional through hole.

8. A self-hitching and unhitching, unpowered sling according to claim 6, characterised in that: The circumference of the center plug is provided with three elastic spring sheets.

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