Cold-rolled plate lifting appliance with overload protection structure

Abstract

The utility model relates to the technical field of lifting appliances, in particular to a cold rolled plate lifting appliance with an overload protection structure, which is characterized in that a plurality of first springs connected with an abutting frame are fixedly arranged in a rectangular groove, a driving frame is fixedly arranged on the right side of the abutting frame, a rack is fixedly arranged on the side wall of the driving frame, and a rotating rod is rotatably arranged in a connecting frame in a penetrating manner through a bearing; a linkage rod is fixedly arranged at the right end of the rotating rod and rotationally inserted into the supporting frame through a bearing, a gear meshed with the rack fixedly sleeves one end of the linkage rod, the reinforcing rod is arranged on the left side of the connecting frame and fixedly sleeves the left end of the rotating rod, and a connecting block is fixedly arranged on the left side of the supporting frame. The connecting grooves matched with the connecting blocks are formed in the reinforcing rods, and the overload protection mechanisms are arranged on the lifting rings, so that higher bearing performance is achieved, the overload warning function is achieved, and the lifting appliance is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoist technical field, concretely relates to a cold rolled plate hoist with overload protection structure. BACKGROUND

[0002] Cold rolled plate is with hot rolled coil as raw material, and is rolled below recrystallization temperature at room temperature, and needs to use a hoist in the hoisting of cold rolled plate, and the existing cold rolled plate hoist is generally a C-shaped hoist, although the structure is simple, and the use process is simple and fast, but is influenced by the structure, so that the stress point of the hoist is single, and the stress bearing performance needs to be improved, and also has no overload protection function, so the safety is low, therefore, a cold rolled plate hoist with overload protection structure is urgently needed. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of design reasonable, to solve the above problems.

[0004] To achieve the above object, the utility model adopts the following technical scheme: it includes connecting frame, support frame and lifting ring;The right side of connecting frame is fixedly provided with support frame, and the upper portion of connecting frame is fixedly provided with lifting ring;

[0005] It also includes:

[0006] The abutment frame is movably inserted into the rectangular slot formed in the support frame, a plurality of first springs connected to the abutment frame are fixedly arranged in the rectangular slot, a driving frame is fixedly arranged on the right side of the abutment frame, and the driving frame is movably arranged in the support frame;

[0007] The rack is fixedly arranged on the side wall of the driving frame, a rotating rod is rotatably arranged in the connecting frame through a bearing, a linkage rod is fixedly arranged on the right end of the rotating rod, and the linkage rod is rotatably inserted into the support frame through a bearing, and a gear meshing with the rack is fixedly sleeved on one end of the linkage rod.

[0008] The reinforcing rod is arranged on the left side of the connecting frame, and the reinforcing rod is fixedly sleeved on the left end of the rotating rod, a connecting block is fixedly arranged on the left side of the support frame, a connecting groove is formed on the reinforcing rod to cooperate with the connecting block, and an overload protection mechanism is arranged on the lifting ring.

[0009] Further, the overload protection mechanism includes:

[0010] The pressing rod is movably arranged in the lifting ring, a plurality of second springs are fixedly arranged in the groove formed on the top wall of the lifting ring, and the lower end of the second spring is fixedly connected with the pressing rod.

[0011] The extrusion blocks are movably arranged in the extrusion grooves respectively arranged on the left and right inner side walls of the lifting ring, the third springs are fixedly arranged in the extrusion grooves and connected with the extrusion blocks, and anti-skid lines are arranged on the side walls of the extrusion blocks and the pressing rod.

[0012] The pressure sensor is fixedly arranged at the middle position of the top wall of the groove, and the upper right side of the connecting frame is fixedly provided with a buzzer electrically connected with the pressure sensor.

[0013] Further, the guide rod is movably arranged in the first spring and fixedly arranged on the inner bottom wall of the rectangular groove, and the upper end of the guide rod is movably inserted into the abutting frame.

[0014] Further, the limiting strips are fixedly arranged on the front and rear side walls of the abutting frame and movably arranged in the abutting grooves arranged on the front and rear sides of the opening of the rectangular groove.

[0015] Further, the limiting block is fixedly arranged on the left side of the connecting block and arranged in cooperation with the left side of the reinforcing rod.

[0016] Further, the reinforcing ribs are fixedly arranged on the left side wall of the reinforcing rod, the reinforcing rib plates are fixedly arranged on the front and rear sides of the reinforcing ribs, and the reinforcing rib plates are fixedly arranged on the reinforcing rod.

[0017] Compared with the prior art, the cold rolled plate lifting appliance with the overload protection structure has the advantages that the cold rolled plate lifting appliance not only has stronger bearing performance, but also has an overload warning function, and the protection of the lifting appliance is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the utility model.

[0019] Figure 2 is an exploded view of the connecting frame, the supporting frame and the lifting ring in the utility model.

[0020] Figure 3 is Figure 2 is an enlarged view of A part in

[0021] Figure 4 is an exploded view of the pressing rod and the extrusion block in the utility model.

[0022] Figure 5 is a structural schematic view of the supporting frame in the utility model.

[0023] MARK NO.

[0024] 1. Connecting frame; 2. Support frame; 3. Lifting ring; 4. Abutment frame; 5. Rectangular groove; 6. Spring No. 1; 7. Drive frame; 8. Rack; 9. Rotating rod; 10. Linkage rod; 11. Gear; 12. Reinforcing rod; 13. Connecting block; 14. Connecting groove; 15. Overload protection mechanism; 15. Pressure rod 15-1; 15-2 Spring No. 2; 15-3 Extrusion block; 15-4 Spring No. 3; 15-5 Pressure sensor controller; 15-6 Buzzer; 16. Groove; 17. Anti-slip texture; 18. Guide rod; 19. Limiting strip; 20. Abutment groove; 21. Limiting block; 22. Reinforcing rib; 23. Reinforcing rib plate; 24. Extrusion groove. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1-5 As shown, this specific embodiment adopts the following technical solution: it includes a connecting frame 1, a support frame 2, and a lifting ring 3; the support frame 2 is fixedly installed on the right side of the connecting frame 1, and the lifting ring 3 is fixedly installed on the upper part of the connecting frame 1;

[0027] It also includes:

[0028] A contact frame 4 is movably inserted into a rectangular slot 5 on a support frame 2. Several first springs 6 connected to the contact frame 4 are fixedly installed in the rectangular slot 5. A drive frame 7 is fixedly installed on the right side of the contact frame 4 and is movably installed in the support frame 2. A guide rod 18 is movably inserted through the first spring 6 and is fixedly installed on the inner bottom wall of the rectangular slot 5. The upper end of the guide rod 18 is movably inserted into the contact frame 4. The guide rod 18 not only provides auxiliary guidance for the movement of the contact frame 4, but also prevents the first spring 6 from bending under compression, thus affecting its service life. Limiting strips 19 are fixedly installed on the front and rear side walls of the contact frame 4. The limiting strips 19 are movably abutting against the contact slots 20 opened on the front and rear sides of the opening of the rectangular slot 5. The limiting strips 19 can limit the minimum height of the contact frame 4 in the rectangular slot 5.

[0029] The rack 8 is fixedly mounted on the side wall of the drive frame 7. A rotating rod 9 is rotatably mounted inside the connecting frame 1 through a bearing. A linkage rod 10 is fixedly mounted on the right end of the rotating rod 9. The linkage rod 10 is rotatably inserted into the support frame 2 through a bearing. A gear 11 that meshes with the rack 8 is fixedly sleeved on one end of the linkage rod 10.

[0030] The reinforcing rod 12 is arranged on the left side of the connecting frame 1 and is fixedly sleeved on the left end of the rotating rod 9. The left side of the supporting frame 2 is fixedly provided with a connecting block 13. The reinforcing rod 12 is provided with a connecting groove 14 matched with the connecting block 13. The lifting ring 3 is provided with an overload protection mechanism 15. The left side of the connecting block 13 is fixedly provided with a limiting block 21 matched with the left side of the reinforcing rod 12. When the reinforcing rod 12 is overturned downward and the connecting block 13 is abutted into the connecting groove 14, the limiting block 21 can limit the left side of the reinforcing rod 12, so that the reinforcing rod 12 is prevented from being offset or bent to the left side during the stress process. The left side wall of the reinforcing rod 12 is fixedly provided with a reinforcing rib 22. The front and rear sides of the reinforcing rib 22 are fixedly provided with a plurality of reinforcing rib plates 23 fixedly arranged on the reinforcing rod 12. The reinforcing rib 22 and the reinforcing rib plate 23 can improve the structural strength of the reinforcing rod 12 and enhance the stress bearing performance of the reinforcing rod 12.

[0031] The overload protection mechanism 15 comprises:

[0032] The pressing rod 15-1 is movably arranged in the lifting ring 3. A plurality of second springs 15-2 are fixedly arranged in the groove 16 in the top wall of the lifting ring 3. The lower end of the second spring 15-2 is fixedly connected with the pressing rod 15-1.

[0033] The extrusion block 15-3 is movably arranged in the extrusion groove 24 in the left and right inner side walls of the lifting ring 3. The extrusion groove 24 is fixedly provided with a third spring 15-4 connected with the extrusion block 15-3. The abutting side wall of the extrusion block 15-3 and the pressing rod 15-1 is provided with an anti-skid pattern 17.

[0034] The pressure sensor 15-5 is fixedly arranged at the middle position of the top wall of the groove 16. The upper right side of the connecting frame 1 is fixedly provided with a buzzer 15-6 electrically connected with the pressure sensor 15-5. The rebounding thrust of the third spring 15-4 on the extrusion block 15-3 and the cooperation of the anti-skid pattern 17 can generate a large friction force between the extrusion block 15-3 and the pressing rod 15-1. Once the pressing rod 15-1 is subjected to excessive pressure and overcomes the friction force and moves upward to trigger the pressure sensor 15-5, the buzzer 15-6 can emit an alarm sound to provide an overload warning for the workers, so as to realize the overload protection of the lifting device.

[0035] In use of the utility model, the one end of the hoisting rope of the crane can be sleeved on the lifting ring 3 and contact with the bottom of the pressing rod 15-1, then the support frame 2 is passed through the cold-rolled plate, and then the lifting appliance is moved upward by the crane and the hoisting rope, so that the support frame 2 drives the cold-rolled plate to move upward, thereby realizing the hoisting of the cold-rolled plate, and in the process, the resisting frame 4 is completely pressed into the rectangular groove 5 by the cold-rolled plate and compresses the first spring 6; the resisting frame 4 drives the driving frame 7 to move downward in the support frame 2, and the meshing of the gear 11 and the rack 8 can make the linkage rod 10 rotate, the linkage rod 10 drives the reinforcing rod 12 to rotate downward through the rotating rod 9, so that the connecting block 13 is pressed into the connecting groove 14, thereby realizing the force sharing of the reinforcing rod 12 to the support frame 2, and improving the overall force bearing performance of the lifting appliance;

[0036] If the cold-rolled plate is heavy and exceeds the limit weight that can be borne by the lifting appliance, in the process of pulling the lifting appliance upward, the pressing rod 15-1 will be subjected to a great pressure, which will exceed the friction force between the pressing rod 15-1 and the pressing block 15-3, so that the pressing rod 15-1 will move into the recess 16 and compress the second spring 15-2, and the pressing block 15-3 will also move into the pressing groove 24 and compress the third spring 15-4; at this time, the pressing rod 15-1 will touch the pressure controller 15-5, so that the buzzer 15-6 can emit an alarm sound to remind the staff that the weight of the hoisted cold-rolled plate is overloaded.

[0037] Compared with the prior art, the utility model has the advantages that:

[0038] 1、In the process of hoisting the cold-rolled plate, the cooperation of the resisting frame 4, the first spring 6, the driving frame 7, the rack 8, the rotating rod 9, the linkage rod 10 and the gear 11 can make the reinforcing rod 12 turn downward, so that the connecting frame 1, the support frame 2 and the reinforcing rod 12 can form a force bearing whole, thereby realizing the strengthening of the structure strength of the lifting appliance and not affecting the convenience of hoisting the cold-rolled plate;

[0039] 2、When the weight of the cold-rolled plate exceeds the range that can be borne by the lifting appliance, the overload protection mechanism 15 can be used to give an overload alarm to remind the staff and realize the protection of the lifting appliance;

[0040] 3、The guide rod 18 can not only provide auxiliary guidance for the movement of the resisting frame 4, but also can avoid the bending of the first spring 6 in the compressed state and affect the service life;

[0041] 4、The reinforcing rib 22 and the reinforcing rib plate 23 can improve the structure strength of the reinforcing rod 12 and enhance the force bearing performance of the reinforcing rod 12.

[0042] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, and equivalent replacement of part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A cold-rolled plate coil lifting appliance with overload protection structure, comprising a connecting frame (1), a supporting frame (2) and a lifting ring (3); the right side of the connecting frame (1) is fixedly provided with the supporting frame (2), and the upper portion of the connecting frame (1) is fixedly provided with the lifting ring (3); characterized in that It also comprises: a resisting frame (4) movably inserted into a rectangular groove (5) formed in the supporting frame (2), a plurality of first springs (6) connected with the resisting frame (4) are fixedly arranged in the rectangular groove (5), the right side of the resisting frame (4) is fixedly provided with a driving frame (7), and the driving frame (7) is movably arranged in the supporting frame (2); a rack (8) fixedly arranged on the side wall of the driving frame (7), a rotating rod (9) rotatably penetrating through the connecting frame (1) through a bearing, the right end of the rotating rod (9) is fixedly provided with a linkage rod (10), and the linkage rod (10) is rotatably inserted into the supporting frame (2) through a bearing, one end of the linkage rod (10) is fixedly sleeved with a gear (11) engaged with the rack (8); a reinforcing rod (12) arranged on the left side of the connecting frame (1), and the reinforcing rod (12) is fixedly sleeved on the left end of the rotating rod (9), a connecting block (13) is fixedly arranged on the left side of the supporting frame (2), a connecting groove (14) matched with the connecting block (13) is formed in the reinforcing rod (12), and the lifting ring (3) is provided with an overload protection mechanism (15).

2. The cold-rolled plate coil lifting appliance with overload protection structure according to claim 1, characterized in that: The overload protection mechanism (15) comprises: a pressing rod (15-1) movably arranged in the lifting ring (3), a plurality of second springs (15-2) fixedly arranged in a groove (16) formed in the top wall of the lifting ring (3), and the lower end of the second spring (15-2) is fixedly connected with the pressing rod (15-1); two extrusion blocks (15-3) movably arranged in extrusion grooves (24) formed in the left and right inner side walls of the lifting ring (3), a plurality of third springs (15-4) connected with the extrusion blocks (15-3) are fixedly arranged in the extrusion grooves (24), and anti-skid lines (17) are arranged on the side walls of the extrusion blocks (15-3) and the pressing rod (15-1) which abut against each other; a pressure sensor (15-5) fixedly arranged at the middle position of the top wall of the groove (16), and a buzzer (15-6) electrically connected with the pressure sensor (15-5) is fixedly arranged on the right side of the upper portion of the connecting frame (1).

3. The cold-rolled plate coil lifting appliance with overload protection structure according to claim 1, characterized in that: A guide rod (18) movably penetrates through the first spring (6), and the guide rod (18) is fixedly arranged on the inner bottom wall of the rectangular groove (5), and the upper end of the guide rod (18) is movably inserted into the resisting frame (4).

4. The cold-rolled plate coil lifting appliance with overload protection structure according to claim 1, characterized in that: Limiting strips (19) are fixedly arranged on the front and rear side walls of the resisting frame (4), and the limiting strips (19) are movably arranged in resisting grooves (20) formed on the front and rear sides of the rectangular groove (5).

5. The cold rolled coil lifting device with overload protection structure according to claim 1, characterized in that: A limiting block (21) is fixedly arranged on the left side of the connecting block (13), and the limiting block (21) is arranged in cooperation with the left side of the reinforcing rod (12).

6. The cold rolled coil lifting device with overload protection structure according to claim 1, characterized in that: The left side wall of the reinforcing rod (12) is fixedly provided with reinforcing ribs (22), the front and rear sides of the reinforcing ribs (22) are fixedly provided with a plurality of reinforcing rib plates (23), and the reinforcing rib plates (23) are fixedly provided on the reinforcing rod (12).

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