Protective device for worm and gear speed reducer of shearing machine
By designing a worm gear and worm reducer protection device in the shearing machine, the damage problem of worm reducer under overload state is solved, and effective protection of the shear blade and equipment is achieved.
Patent Information
- Application Number
- CN202421027479.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Existing shear mechanical worm gear reducers are prone to overload toothing and tensile deformation of the top cover when the shear blade is minimal and unlimited, and the shear blade knife will be damaged.
A protective device including a platform, a gantry, a drive motor, a worm reducer, a rotating seat, a double-headed bolt, a connecting seat, a threaded casing, a threaded rod, a scissor and a positioning assembly are designed. Through the coordination of the positioning assembly and limit switch, the minimum mechanical position is locked, the movement of the threaded rod is restricted, the shear blades are avoided, and the car is stopped in time at the maximum position to prevent mechanical damage.
It effectively avoids the engagement of the shear blades and mechanical damage, protects the worm reducer and shear blades, and ensures the normal operation and safety of the equipment.
Smart Images
Figure CN222429421U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel rolling equipment, in particular to a shearing machine worm gear reducer protection device. Background Art
[0002] A shear is a device used to shear steel plates into specified sizes. According to the shape and configuration of the blade and the condition of the steel plate, there are three basic types of shears commonly used in the production of medium and thick plates: bevel blade shears (i.e. guillotine shears), disc shears (i.e. disc shears) and rolling shears (i.e. rolling shears).
[0003] The gap adjustment of shearing machinery is one of the most important factors affecting the shearing quality. In order to effectively adjust the shearing gap, based on the analysis of the adjustment principle of the rolling-cut shearing gap, the protection problems of the worm gear reducer that occur during the adjustment of the shearing gap are focused on, and the failure mechanism and treatment methods of these problems are proposed. The factory applies motor overcurrent protection to the worm gear reducer. This method involves limiting the digital set value and the actual travel amount. Therefore, under overload conditions, the worm gear reducer will have overload and tooth breaking, and the top cover of the worm gear reducer will be stretched and deformed (capping phenomenon), and the shearing blade gap will be limited to the minimum without restriction, which will cause damage to the shearing blade. For this reason, we proposed a shearing machinery worm gear reducer protection device. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a shearing machine worm gear reducer protection device.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A protection device for a worm gear reducer of a shearing machine comprises a platform, a gantry is vertically provided at one end of the platform, a driving motor is horizontally provided on the top of the gantry, the output shaft of the driving motor is connected to the worm reducer, a rotating seat is inserted in the center of the worm reducer, the rotating seat rotates through the top of the gantry, stud bolts are symmetrically fixed at both ends of the rotating seat, the same connecting seat is fixed at the bottom of the stud bolts, a threaded sleeve is provided at the bottom of the connecting seat, a threaded rod is threadedly inserted in the internal thread of the threaded sleeve, a scissors is provided at the bottom of the threaded rod, and a positioning component for limiting the descent of the threaded rod is provided on the top of the threaded rod.
[0007] Preferably, the positioning assembly includes a square hole ring slidably mounted on the top of the threaded rod, the bottom of the square hole ring abuts against the top of the connecting seat, an adjusting nut is mounted on the outer thread of the square hole ring, and a positioning bolt is inserted into the transverse thread of the adjusting nut.
[0008] Through the above technical solution: the minimum mechanical position is locked by the positioning bolt, the threaded rod is restricted from moving downward, the upper and lower shear blades are prevented from meshing, and the shear blades are protected from damage.
[0009] Preferably, a square shaft head is coaxially provided on the top of the threaded rod, the square shaft head slides through the square hole ring, and the end of the positioning bolt abuts against the square shaft head.
[0010] Through the above technical solution: the square shaft head is matched with the square hole ring to make the square shaft head slide and rise vertically.
[0011] Furthermore, a stop block is provided on the top of the square hole ring.
[0012] Through the above technical solution: the stop block is used to form a preliminary limiting effect to prevent the situation of exceeding the stroke, thereby playing an effective protective role.
[0013] Furthermore, a limit switch is provided inside the rotating seat, and the top of the square shaft head slides and extends into the interior of the rotating seat.
[0014] Through the above technical solution: using the limit switch in conjunction with the square shaft head, when the threaded rod moves upward to the maximum position, it avoids hitting the limit switch, which plays a role of timely stopping, avoiding the mechanical end cover from being squeezed, hit, and deformed, effectively preventing equipment damage, and effectively protecting the worm reducer.
[0015] Preferably, a rotating rod is inserted into the lower part of the gantry for transverse rotation, a right-angle baffle is sleeved on the outer circumference of the rotating rod, gears are symmetrically sleeved on the outer circumferences of both ends of the rotating rod, a rack is meshed on one side of the gear, a connecting rod is transversely provided on the top of the rack, and the ends of the connecting rod are connected to the scissors.
[0016] Through the above technical scheme: when the scissors are used for descending shearing, the rack is driven down through the connecting rod and then driven to rotate the rotating rod through the transmission of the gear, and the rotating rod drives the right-angle baffle to rotate. When shearing, the front working area is shielded to prevent the splashing of working debris, thereby effectively protecting the personal safety of the operators.
[0017] Preferably, sliding rods are vertically symmetrically provided on the top of the scissors, and the sliding rods are slidably passed through the top of the gantry.
[0018] Through the above technical solution: the sliding rod is used to guide the lifting and lowering of the scissors.
[0019] The beneficial effects of the utility model are:
[0020] 1. Through the positioning assembly, the positioning bolt is used to lock the minimum mechanical position, limiting the downward movement of the threaded rod to avoid the upper and lower shear blades from meshing and protecting the shear blades from damage;
[0021] 2. Through the coordination of the limit switch and the square shaft head, when the threaded rod moves upward to the maximum position, it avoids hitting the limit switch, which plays a role of timely stopping, avoiding the mechanical end cover from being squeezed, hit, and deformed, effectively preventing equipment damage, and effectively protecting the worm reducer;
[0022] 3. When the scissors are set up for descending shearing, the rack is driven down by the connecting rod and then driven by the gear to drive the rotating rod to rotate. The rotating rod drives the right-angle baffle to rotate. When shearing, the front working area is shielded to prevent the splashing of working debris, effectively protecting the personal safety of the operators.
[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a three-dimensional structural schematic diagram of a shearing machine worm gear reducer protection device proposed by the utility model;
[0025] Figure 2 This is a structural schematic diagram of a shearing machine worm gear reducer protection device proposed by the utility model;
[0026] Figure 3 This is a structural schematic diagram of a shearing machine worm gear reducer protection device proposed by the utility model;
[0027] Figure 4 The utility model is a structural schematic diagram of a shearing machine worm gear reducer protection device.
[0028] In the figure: 1. platform; 2. gantry; 3. drive motor; 4. worm reducer; 5. rotating seat; 6. stud bolt; 7. connecting seat; 8. threaded sleeve; 9. threaded rod; 10. scissors; 11. adjusting nut; 12. positioning bolt; 13. square hole ring; 14. square shaft head; 15. stop block; 16. limit switch; 17. connecting rod; 18. rotating rod; 19. gear; 20. rack; 21. right-angle baffle; 22. slide rod. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0030] Example 1, reference Figures 1 to 4 A shearing machine worm reducer protection device comprises a platform 1, a gantry 2 is vertically provided at one end of the platform 1, a driving motor 3 is horizontally provided on the top of the gantry 2, the output shaft of the driving motor 3 is connected with a worm reducer 4, a rotating seat 5 is inserted in the center of the worm reducer 4, the rotating seat 5 rotates and passes through the top of the gantry 2, stud bolts 6 are symmetrically fixed at both ends of the rotating seat 5, the same connecting seat 7 is fixed at the bottom of the stud bolts 6, a threaded sleeve 8 is provided at the bottom of the connecting seat 7, a threaded rod 9 is threadedly inserted in the internal thread of the threaded sleeve 8, a scissors 10 is provided at the bottom of the threaded rod 9, and a positioning component for limiting the descent of the threaded rod 9 is provided at the top of the threaded rod 9.
[0031] In the specific implementation, please refer to Figure 4 The positioning assembly includes a square hole ring 13 which is slidably sleeved on the top of the threaded rod 9, the bottom of the square hole ring 13 is against the top of the connecting seat 7, the outer thread sleeve of the square hole ring 13 is provided with an adjusting nut 11, and the adjusting nut 11 is transversely threaded with a positioning bolt 12. The positioning bolt 12 is used to lock the minimum mechanical position, limit the downward movement of the threaded rod 9, avoid the upper and lower shear blades from meshing, and protect the shear blades from damage.
[0032] For details, please refer to Figure 4 A square shaft head 14 is coaxially provided on the top of the threaded rod 9. The square shaft head 14 slides through the square hole ring 13. The end of the positioning bolt 12 abuts against the square shaft head 14. The square shaft head 14 cooperates with the square hole ring 13 to make the square shaft head 14 slide and rise and fall vertically.
[0033] For details, please refer to Figure 4 A stop block 15 is provided on the top of the square hole ring 13, and the stop block 15 is used to form a preliminary limiting effect to prevent the occurrence of a situation where the stroke exceeds the limit, thereby playing an effective protective role.
[0034] For details, please refer to Figure 4 A limit switch 16 is provided inside the rotating seat 5, and the top of the square shaft head 14 slides and extends into the rotating seat 5. The limit switch 16 cooperates with the square shaft head 14, and when the threaded rod 9 moves upward to the maximum position, it avoids contact with the limit switch 16, which plays a role of timely stopping, avoiding the mechanical end cover from being squeezed, hit, and deformed, effectively preventing equipment damage, and effectively protecting the worm reducer 4.
[0035] For details, please refer to Figure 3A rotating rod 18 is inserted into the lower part of the gantry 2 for horizontal rotation, and a right-angle baffle 21 is sleeved on the outer circumference of the rotating rod 18. Gears 19 are symmetrically sleeved on the outer circumference of both ends of the rotating rod 18. A rack 20 is meshed on one side of the gear 19. A connecting rod 17 is transversely arranged on the top of the rack 20. The ends of the connecting rod 17 are connected to the scissors 10. When the scissors 10 are used to descend and shear, the rack 20 is driven to descend through the connecting rod 17 and then driven by the gear 19 to rotate the rotating rod 18. The rotating rod 18 drives the right-angle baffle 21 to rotate. When shearing is performed, the front working area is shielded to prevent the splashing of working debris, thereby effectively protecting the personal safety of the operators.
[0036] For details, please refer to Figure 2 The top of the scissors 10 is vertically symmetrically provided with sliding rods 22, which are all slidably passed through the top of the gantry 2, and the sliding rods 22 are used to guide the lifting and lowering of the scissors 10.
[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A shearing machine worm gear reducer protection device, comprising a platform (1), characterized in that: A gantry (2) is vertically arranged at one end of the platform (1), a driving motor (3) is horizontally arranged at the top of the gantry (2), an output shaft of the driving motor (3) is connected to a worm reducer (4), a rotating seat (5) is inserted at the center of the worm reducer (4), the rotating seat (5) rotates and passes through the top of the gantry (2), stud bolts (6) are symmetrically fixed at both ends of the rotating seat (5), the bottom of the stud bolts (6) is fixed with the same connecting seat (7), a threaded sleeve (8) is provided at the bottom of the connecting seat (7), a threaded rod (9) is inserted into the internal thread of the threaded sleeve (8), a scissors (10) is provided at the bottom of the threaded rod (9), and a positioning component for limiting the descent of the threaded rod (9) is provided at the top of the threaded rod (9).
2. A shearing machine worm gear reducer protection device according to claim 1, characterized in that: The positioning assembly comprises a square hole ring (13) slidably sleeved on the top of the threaded rod (9), the bottom of the square hole ring (13) abuts against the top of the connecting seat (7), an adjusting nut (11) is sleeved on the outer thread of the square hole ring (13), and a positioning bolt (12) is inserted into the transverse thread of the adjusting nut (11).
3. A shearing machine worm gear reducer protection device according to claim 2, characterized in that: A square shaft head (14) is coaxially arranged on the top of the threaded rod (9), the square shaft head (14) slides through the square hole ring (13), and the end of the positioning bolt (12) abuts against the square shaft head (14).
4. A shearing machine worm gear reducer protection device according to claim 3, characterized in that: A stop block (15) is provided on the top of the square hole ring (13).
5. A shearing machine worm gear reducer protection device according to claim 4, characterized in that: A limit switch (16) is provided inside the rotating seat (5), and the top of the square shaft head (14) slides and extends into the interior of the rotating seat (5).
6. A shearing machine worm gear reducer protection device according to claim 5, characterized in that: A rotating rod (18) is inserted into the lower part of the gantry (2) for transverse rotation, and a right-angle baffle (21) is sleeved on the outer circumference of the rotating rod (18). Gears (19) are symmetrically sleeved on the outer circumferences of both ends of the rotating rod (18), and a rack (20) is meshed on one side of the gear (19). A connecting rod (17) is transversely arranged on the top of the rack (20), and the ends of the connecting rod (17) are connected to the scissors (10).
7. A shearing machine worm gear reducer protection device according to claim 6, characterized in that: The top of the scissors (10) is vertically symmetrically provided with sliding rods (22), and the sliding rods (22) are all slidably penetrated through the top of the gantry (2).