Die hoisting posture limiting structure

Abstract

The utility model discloses a mold hoisting posture limiting structure which comprises a lifting hook, a limiting unit installed on the lifting hook and at least four hoisting belts, and the lifting hook comprises a vertical connecting part and a hook-shaped part connected with the connecting part. The limiting unit comprises a mounting plate mounted on the connecting part, a limiting arm mounted on the mounting plate through a horizontal rotating shaft and capable of abutting against the outer wall of the end, away from the connecting part, of the hook-shaped part, and a connecting plate fixedly mounted on the mounting plate and coaxially arranged with the rotating shaft. The inserting rod is installed on the limiting arm in a sliding mode and can elastically get close to the connecting plate to slide so as to be connected with the connecting plate in a clamped mode, the control mechanism is installed on the limiting arm and used for driving the inserting rod to be separated from the connecting plate, the limiting arm does not occupy the inner side space of the hook-shaped part when rotating around the rotating shaft, and more hanging belts can be conveniently arranged on the hook-shaped part in a sleeving mode; the multiple lifting belts can be used for connecting all corners of the mold, the situation that the mold turns over or rotates due to uneven stress after being lifted is avoided, and the mold lifting device is suitable for lifting large-size molds.

Description

Technical Field

[0001] The utility model relates to the technical field related to mold hoisting, and in particular to a mold hoisting posture limiting structure. Background Art

[0002] Overhead cranes are used in industry to lift and transfer objects horizontally. Most of the small overhead cranes used inside ordinary factory buildings are of a few tons. They require the assistance of slings during use. Generally, one hook is used with two slings.

[0003] my country's utility model patent "A kind of eye hook" with publication number CN216918315U discloses an eye hook, which first hooks the designated part of the lifting object with the hook body, then rotates and fixes the locking device in the groove, and then inserts the fixing piece into the through hole in the groove. The fixing piece plays a role of limiting and fixing the locking device in the groove, avoiding the locking device from being deflected due to collision, resulting in the lifting object being unhooked, and effectively improving the safety of the operation; thereby solving the problem of the eye hook in the prior art being easily unhooked due to collision.

[0004] However, the above patent still has the following shortcomings. The top-view shape of large molds is mostly square or rectangular. If two slings are used, the mold will shake, flip or rotate due to uneven force after the mold is lifted. Therefore, at least four slings are required to connect each corner of the mold respectively. However, when the tongue plate is separated from the end of the hook, it rotates close to the inner side of the hook, that is, the rotation area of ​​the tongue plate overlaps with the hanging area of ​​the sling. When the number of slings is large, the sling already hung on the hook will hinder the rotation of the tongue plate, which is not conducive to continuing to hang the sling on the hook. After the mold is lifted, the sling hung on the hook will also hinder the rotation of the tongue plate, which is not conducive to removing the sling. The existing sling with two slings will cause the mold to shake or rotate after lifting. Therefore, it is necessary to design a mold lifting posture limiting structure. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to overcome the problem in the prior art that the hook and the two matching slings will cause the mold to flip or rotate when lifting the mold.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a mold lifting posture limiting structure, including a hook, a limiting unit installed on the hook and at least four lifting straps, the hook including a vertical connecting part and a hook-shaped part connected to the connecting part, the limiting unit including a mounting plate installed on the connecting part, a limiting arm installed on the mounting plate through a horizontal rotating shaft and capable of interfering with the outer wall of the end of the hook-shaped part away from the connecting part, a connecting plate fixedly installed on the mounting plate and coaxially arranged with the rotating shaft, an insertion rod slidably installed on the limiting arm and capable of elastically sliding close to the connecting plate to be engaged with the connecting plate, and a control mechanism installed on the limiting arm for driving the insertion rod to separate from the connecting plate.

[0007] Preferably, at least two positioning through grooves are formed through the connecting plate and are arranged at intervals along the circumferential direction of the rotating shaft and both match the insertion rod.

[0008] Preferably, both side edges of the connecting plate are extended with limiting portions bent in the direction close to the rotation axis, and the end of the insert rod close to the connecting plate is located between a pair of limiting portions.

[0009] Preferably, there are two positioning grooves, including a first positioning groove for inserting the insertion rod when the limiting arm contacts the hook-shaped portion, and a second positioning groove for inserting the insertion rod when the limiting arm separates from the hook-shaped portion, and the side walls of the first positioning groove and the second positioning groove respectively fit the corresponding limiting portions.

[0010] Preferably, the arc length of the second positioning through slot is greater than the arc length of the first positioning through slot.

[0011] Preferably, at least two guide sleeves arranged at intervals along the length direction of the insertion rod are fixedly installed on the limit arm, and the insertion rod is slidably inserted into the guide sleeves. The fixed sleeve on the insertion rod is provided with a limit ring located between two adjacent guide sleeves, and the insertion rod is provided with a spring. The two ends of the spring respectively conflict with the limit ring and the guide sleeve located on the side of the limit ring away from the connecting plate.

[0012] Preferably, the control mechanism includes a swivel arm hinged to the limit arm through a hinge axis, a force arm fixedly connected to the swivel arm near the end of the insertion rod and with a length direction perpendicular to the length direction of the swivel arm, and a connecting rope with two ends respectively connected to the limit ring and the force arm away from the end of the swivel arm, and the hinge axis is located on the side of the insertion rod away from the connecting plate.

[0013] Preferably, ends of the limiting arm and the rotating arm away from the rotating shaft are fixedly mounted with handles arranged away from the hook-shaped portion.

[0014] According to the above technical scheme, the utility model provides a mold lifting posture limiting structure, which has the following beneficial effects when in use: the control mechanism is used to drive the insertion rod to slide away from the connecting plate, so that the insertion rod is separated from the connecting plate, and then the limit arm is rotated to drive the limit arm to separate from the end of the hook-shaped portion. Because the rotating shaft is in a horizontal state, the limit arm rotates around the rotating shaft away from the hook-shaped portion, and the control mechanism is released, and the insertion rod will slide on the limit arm close to the connecting plate to engage with the connecting plate, so that the limit arm and the hook-shaped portion are in a separated state, which is not only convenient for the end of the sling to be put on the hook-shaped portion, and the limit arm will not occupy the inner space of the hook-shaped portion, but also convenient for putting more slings on the hook-shaped portion, and multiple slings can be used to connect each corner of the mold, so as to avoid the mold from flipping or rotating due to uneven force after being lifted, and the limiting structure is also convenient for the subsequent removal of the sling, which is suitable for lifting molds with large volume and requiring the use of multiple slings.

[0015] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0017] Figure 1 It is a three-dimensional structural diagram of a mold hoisting posture limiting structure provided by the present invention;

[0018] Figure 2 This is a mold hoisting posture limiting structure provided by the utility model. Figure 1 Schematic diagram of the perspective along A;

[0019] Figure 3 It is a partial three-dimensional structural schematic diagram of a limiting unit of a mold hoisting posture limiting structure provided by the present invention.

[0020] Description of Reference Numerals

[0021] 1. Hook; 2. Mounting plate; 3. Rotating shaft; 4. Limiting arm; 5. Connecting plate; 6. Inserting rod; 7. Limiting part; 8. First positioning slot; 9. Second positioning slot; 10. Guide sleeve; 11. Limiting ring; 12. Spring; 13. Rotating arm; 14. Force arm; 15. Connecting rope; 16. Handle. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] In the present utility model, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0024] like Figure 1-3 As shown, a mold lifting posture limiting structure includes a hook 1, a limiting unit installed on the hook 1 and at least four lifting straps, the hook 1 includes a vertical connecting portion and a hook-shaped portion connected to the connecting portion, the limiting unit includes a mounting plate 2 installed on the connecting portion, a limiting arm 4 installed on the mounting plate 2 through a horizontal rotating shaft 3 and capable of contacting the outer wall of the end of the hook-shaped portion away from the connecting portion, a connecting plate 5 fixedly installed on the mounting plate 2 and coaxially arranged with the rotating shaft 3, an insertion rod 6 slidably installed on the limiting arm 4 and capable of elastically sliding close to the connecting plate 5 to engage with the connecting plate 5, and a control mechanism installed on the limiting arm 4 for driving the insertion rod 6 to separate from the connecting plate 5.

[0025] The sling is an existing mature technology and is not shown in the figure. When several slings need to be hung on the hook 1, the control mechanism is used to drive the plug rod 6 to slide away from the connecting plate 5 so that the plug rod 6 is separated from the connecting plate 5, and then the limit arm 4 is rotated to drive the limit arm 4 to separate from the end of the hook-shaped portion. Because the rotating shaft 3 is in a horizontal state, the limit arm 4 rotates around the rotating shaft 3 away from the hook-shaped portion, and the control mechanism is released. The plug rod 6 will slide on the limit arm 4 close to the connecting plate 5 to engage with the connecting plate 5, so that the limit arm 4 and the hook-shaped portion are in a separated state. It is not only convenient for the end of the sling to be put on the hook-shaped portion, and the limit arm 4 will not occupy the inner space of the hook-shaped portion, but also convenient for putting more slings on the hook-shaped portion. Using multiple slings can connect each corner of the mold to avoid the mold from flipping or rotating due to uneven force after being lifted, and the limiting structure is also convenient for the subsequent removal of the sling, which is suitable for lifting molds with large volume and requiring multiple slings.

[0026] After several slings are put on the hook-shaped part, the operating mechanism is used again to drive the insertion rod 6 to separate from the connecting plate 5, and the limiting arm 4 is moved in the direction of the rotating shaft 3 close to the hook-shaped part, so that the limiting arm 4 contacts the hook-shaped part, and then the operating mechanism is released to make the insertion rod 6 and the connecting plate 5 engage, fixing the contact state between the limiting arm 4 and the hook-shaped part, preventing the sling from slipping off the hook 1 during the process of lifting the mold, thereby improving safety.

[0027] At least two positioning through grooves are formed through the connecting plate 5 and are arranged at intervals along the circumferential direction of the rotating shaft 3 and are matched with the insertion rod 6 .

[0028] By inserting the insertion rod 6 into the corresponding positioning slot, the limiting arm 4 can be fixed, and the insertion rod 6 is driven to move out of the positioning slot by the control mechanism, so that the limiting arm 4 can rotate around the rotating shaft 3.

[0029] Both sides of the connecting plate 5 are extended with limiting portions 7 bent in the direction close to the rotating shaft 3 , and the end of the inserting rod 6 close to the connecting plate 5 is located between a pair of limiting portions 7 .

[0030] After the insertion rod 6 is driven to move out of the positioning slot by the control mechanism, the end of the insertion rod 6 close to the connecting plate 5 is located between a pair of limiting parts 7, and the limiting parts 7 are used to control the rotation angle range of the limiting arm 4.

[0031] There are two positioning grooves, including a first positioning groove 8 for inserting the insertion rod 6 when the limiting arm 4 contacts the hook-shaped portion, and a second positioning groove 9 for inserting the insertion rod 6 when the limiting arm 4 separates from the hook-shaped portion. The side walls of the first positioning groove 8 and the second positioning groove 9 respectively fit the corresponding limiting portions 7.

[0032] Because the side walls of the first positioning slot 8 and the second positioning slot 9 respectively fit the corresponding limiting portion 7, when the limiting arm 4 is rotated and the limiting arm 4 contacts the limiting portion 7, the insertion rod 6 corresponds to the first positioning slot 8 or the second positioning slot 9, because the limiting portion 7 also has the function of quick positioning.

[0033] The arc length of the second positioning through slot 9 is greater than the arc length of the first positioning through slot 8 .

[0034] When the insertion rod 6 is inserted into the second positioning slot 9, the limiting arm 4 and the hook-shaped portion are in a separated state, and the arc length of the second positioning slot 9 is greater than the arc length of the first positioning slot 8, which is convenient for inserting the insertion rod 6 into the second positioning slot 9. Even if the insertion rod 6 can shake after being inserted into the second positioning slot 9, it will not affect the limiting arm 4 and the hook-shaped portion being in a separated state; and after the insertion rod 6 is inserted into the first positioning slot 8, it is necessary to ensure that the sling will not slip off the hook 1, so the length of the first positioning slot 8 needs to match the end of the insertion rod 6, so that the insertion rod 6 will not shake after being inserted into the first positioning slot 8.

[0035] At least two guide sleeves 10 arranged at intervals along the length direction of the insertion rod 6 are fixedly installed on the limiting arm 4, and the insertion rod 6 is slidably inserted into the guide sleeve 10. A limiting ring 11 located between two adjacent guide sleeves 10 is fixedly sleeved on the insertion rod 6, and a spring 12 is sleeved on the insertion rod 6. The two ends of the spring 12 respectively conflict with the limiting ring 11 and the guide sleeve 10 located on the side of the limiting ring 11 away from the connecting plate 5.

[0036] The spring 12 pushes the insertion rod 6 to slide on the guide sleeve 10 close to the connecting plate 5 through the limiting ring 11 , so that the insertion rod 6 is inserted into the first positioning slot 8 or the second positioning slot 9 .

[0037] The control mechanism includes a rotating arm 13 hinged to the limit arm 4 through a hinge axis, a force arm 14 fixedly connected to the end of the rotating arm 13 close to the insertion rod 6 and with a length direction perpendicular to the length direction of the rotating arm 13, and a connecting rope 15 whose two ends are respectively connected to the limit ring 11 and the end of the force arm 14 away from the rotating arm 13. The hinge axis is located on the side of the insertion rod 6 away from the connecting plate 5.

[0038] Hold the rotating arm 13 and the limiting arm 4 by hand, so that the rotating arm 13 rotates close to the limiting arm 4, and the rotating arm 13 will pull the connecting rope 15 through the force arm 14, and the connecting rope 15 will pull the insertion rod 6 on the guide sleeve 10 through the limiting ring 11 to slide away from the connecting plate 5, so that the insertion rod 6 is separated from the connecting plate 5.

[0039] The ends of the limiting arm 4 and the rotating arm 13 away from the rotating shaft 3 are fixedly mounted with a handle 16 arranged away from the hook-shaped portion.

[0040] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0042] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A mold hoisting posture limiting structure, characterized in that: The invention comprises a hook (1), a limiting unit mounted on the hook (1) and at least four slings, wherein the hook (1) comprises a vertical connecting portion and a hook-shaped portion connected to the connecting portion, the limiting unit comprises a mounting plate (2) mounted on the connecting portion, a limiting arm (4) mounted on the mounting plate (2) via a horizontal rotating shaft (3) and capable of contacting with an outer wall of an end portion of the hook-shaped portion away from the connecting portion, a connecting plate (5) fixedly mounted on the mounting plate (2) and arranged coaxially with the rotating shaft (3), an inserting rod (6) slidably mounted on the limiting arm (4) and capable of elastically sliding close to the connecting plate (5) to engage with the connecting plate (5), and a control mechanism mounted on the limiting arm (4) and used for driving the inserting rod (6) to separate from the connecting plate (5).

2. A mold hoisting posture limiting structure according to claim 1, characterized in that: The connecting plate (5) is formed with at least two positioning through grooves which are arranged at intervals along the circumferential direction of the rotating shaft (3) and which are matched with the insertion rod (6).

3. A mold hoisting posture limiting structure according to claim 2, characterized in that: Both side edges of the connecting plate (5) are extended with limiting portions (7) bent in the direction close to the rotating shaft (3), and the end of the inserting rod (6) close to the connecting plate (5) is located between a pair of limiting portions (7).

4. A mold hoisting posture limiting structure according to claim 3, characterized in that: There are two positioning slots, including a first positioning slot (8) for the insertion rod (6) to be inserted when the limiting arm (4) contacts the hook-shaped portion, and a second positioning slot (9) for the insertion rod (6) to be inserted when the limiting arm (4) separates from the hook-shaped portion. The side walls of the first positioning slot (8) and the second positioning slot (9) are respectively in contact with the corresponding limiting portion (7).

5. A mold hoisting posture limiting structure according to claim 4, characterized in that: The arc length of the second positioning through groove (9) is greater than the arc length of the first positioning through groove (8).

6. The mold hoisting posture limiting structure according to claim 1 is characterized in that: At least two guide sleeves (10) are fixedly mounted on the limit arm (4) and are arranged at intervals along the length direction of the insertion rod (6). The insertion rod (6) is slidably inserted into the guide sleeve (10). A limit ring (11) located between two adjacent guide sleeves (10) is fixedly mounted on the insertion rod (6). A spring (12) is sleeved on the insertion rod (6). Two ends of the spring (12) respectively contact the limit ring (11) and the guide sleeve (10) located on the side of the limit ring (11) away from the connecting plate (5).

7. A mold hoisting posture limiting structure according to claim 6, characterized in that: The control mechanism comprises a rotating arm (13) hinged to a limit arm (4) via a hinge axis, a force arm (14) fixedly connected to the end of the rotating arm (13) close to the insertion rod (6) and having a length direction perpendicular to the length direction of the rotating arm (13), and a connecting rope (15) having two ends respectively connected to the limit ring (11) and the end of the force arm (14) away from the rotating arm (13), wherein the hinge axis is located on a side of the insertion rod (6) away from the connecting plate (5).

8. A mold hoisting posture limiting structure according to claim 7, characterized in that: The ends of the limiting arm (4) and the rotating arm (13) away from the rotating shaft (3) are both fixedly mounted with a handle (16) arranged away from the hook-shaped portion.

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