Overload self-protection structure of speed reducer

Abstract

The overload self-protection structure comprises a speed reducer body, the output end of the speed reducer body is provided with an output shaft, the input end of the speed reducer body is provided with an input shaft, one end of the input shaft is provided with a driving groove, the input shaft is provided with a protection mechanism used for overload protection, and the output end of the speed reducer body is provided with an overload protection mechanism. The overload protection mechanism comprises a protection assembly, the protection assembly comprises a torque rod fixed on an input shaft through a fixing assembly, a cavity is formed in the torque rod, a group of breaking through grooves are formed in the torque rod, the group of breaking through grooves are communicated with the cavity, and a group of grooves are formed in the torque rod. According to the self-protection structure, the problems that in the prior art, main parts such as an internal gear and a bearing are prone to being damaged when the speed reducer is overloaded, the maintenance cost is increased, and long-time production interruption and efficiency reduction are possibly caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to an overload self-protection structure of a reducer. Background Art

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching the speed and transmitting the torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery. At present, the reducers on the market increase the torque while reducing the speed of the prime mover, but the torque provided by the reducer is limited. In the event of an overload, the reducer is easily damaged, shortening the service life of the reducer and increasing the maintenance cost of the reducer.

[0003] The existing self-protection structure also has the following problems, and the reference publication number is CN220980277U, which discloses a reducer, relates to the technical field of reducers. It includes: a worm wheel, a worm and a connecting housing, the connecting housing includes a worm wheel installation chamber and a worm screw installation chamber; the worm wheel includes a rotating shaft and a wheel body, the wheel body is arranged in the middle of the rotating shaft, and the two ends of the rotating shaft are respectively sleeved with a first bearing and a second bearing; the length directions of the worm wheel installation chamber and the worm screw installation chamber are perpendicular to each other, and a connecting through hole connecting the two is formed at the connection between the two, and the worm screw and the worm wheel are meshed at the connecting through hole; a limiting ring and a clamping groove suitable for pressing the retaining ring are formed in the worm wheel installation chamber, the connecting through hole is located between the limiting ring and the clamping groove, a first worm wheel bearing cavity suitable for accommodating the first bearing is formed between the connecting through hole and the limiting ring, and a second worm wheel bearing cavity suitable for accommodating the second bearing is formed between the connecting through hole and the clamping groove, and the limiting ring can abut against the first bearing. This application has the effect of facilitating the positioning and installation of the worm wheel and improving the meshing accuracy of the worm wheel and worm screw.

[0004] However, the above technology cannot solve the problem in the prior art that the reducer is prone to damage to major parts such as internal gears and bearings when overloaded, which not only increases maintenance costs but may also lead to long-term production interruptions and reduced efficiency. For this reason, the utility model provides an overload self-protection structure for the reducer. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an overload self-protection structure for a reducer, which solves the problem in the prior art that the reducer is easily damaged to main parts such as internal gears and bearings when overloaded, which not only increases maintenance costs but also may cause long-term production interruptions and reduced efficiency.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: an overload self-protection structure of a reducer, including a reducer body, an output shaft is provided at the output end of the reducer body, an input shaft is provided at the input end of the reducer body, a driving groove is provided at one end of the input shaft, and a protection mechanism for overload protection is provided on the input shaft, the protection mechanism includes: a protection component, including a torque rod fixed on the input shaft by a fixing component, a cavity is provided on the torque rod, a group of breaking grooves is provided on the torque rod, a group of the breaking grooves is connected to the cavity, a group of grooves is provided on the torque rod, and a group of limiting blocks are fixed in each groove through a spring; a connecting component is arranged in the cavity for connecting the torque rod that breaks after overload.

[0007] Preferably, the fixing assembly comprises through holes, a group of the through holes are opened on the input shaft, and the group of through holes are distributed in a circular array, and a group of damping grooves are opened on the input shaft, and the group of damping grooves are distributed in a circular array.

[0008] Preferably, a damping slider is slidably connected in the damping groove, a group of the damping sliders are fixedly connected to a moving ring, a group of positioning blocks are fixedly connected to one side of the moving ring, and the group of positioning blocks are distributed in a circular array, and a group of the limiting blocks are all provided with positioning grooves.

[0009] Preferably, a group of rectangular through grooves are formed on the input shaft, and the group of rectangular through grooves are distributed in a circular array, and the side wall of the movable ring is fixedly connected to the fixed ring via a fixing rod.

[0010] Preferably, a group of extrusion blocks are fixedly connected to the inner wall of the fixing ring, and the group of extrusion blocks are distributed in a circular array, and the group of extrusion blocks are respectively located in a group of rectangular through grooves, and one end of the limiting block is an inclined surface.

[0011] Preferably, the connecting assembly comprises a rotating groove, a pair of the rotating grooves are respectively opened on opposite side walls of the cavity, a rotating block is rotatably connected in each of the pair of rotating grooves, and a connecting rod is fixedly connected between opposite side walls of the pair of rotating blocks.

[0012] Beneficial Effects

[0013] The utility model provides an overload self-protection structure for a reducer. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The self-protection structure drives the torque rod to rotate through the existing drive motor, thereby driving the input shaft set at the input end of the reducer body to rotate. When it is overloaded and exceeds the torque threshold, the torque rod will break at the position where the cavity and the fracture groove are opened, thereby preventing the internal parts from being damaged due to continuous operation, thereby reducing the damage rate of major parts and avoiding increasing maintenance costs.

[0015] (2) The self-protection structure can allow the staff to quickly install the torque rod into the driving groove through the setting of the limiting block, and fix it by snapping the limiting block into the through hole on the input shaft. Moreover, a group of damping sliders, a movable ring and a group of locking blocks can be snapped into the locking grooves provided on a group of limiting blocks, thereby preventing the limiting block from vibrating due to the spring when the torque rod drives the input shaft to rotate, causing the limiting block to loosen. The damping slider is slidably connected in the damping slide groove to have a damping effect, and can move when pushed by an external force, otherwise it cannot move. A group of extrusion blocks are provided on the inner circular wall of the fixing ring to squeeze the limiting block, thereby facilitating the staff to disassemble and replace the broken torque rod. The design of a pair of rotating blocks and connecting rods can connect the broken torque rod, making it convenient to remove the torque rod located in the driving groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the input shaft of the utility model;

[0018] Figure 3 It is an exploded diagram of the torque rod of the utility model;

[0019] Figure 4 It is an exploded view of the rotating block of the utility model;

[0020] Figure 5 It is an exploded view of the damping slider of the utility model.

[0021] In the figure: 1. reducer body; 2. output shaft; 3. input shaft; 4. driving groove; 5. torque rod; 6. cavity; 7. fracture groove; 8. groove; 9. limiting block; 10. through hole; 11. damping slide groove; 12. damping slider; 13. moving ring; 14. positioning block; 15. positioning groove; 16. rectangular groove; 17. fixing ring; 18. extrusion block; 19. inclined surface; 20. rotating groove; 21. rotating block; 22. connecting rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5The utility model provides a technical solution: an overload self-protection structure of a reducer, comprising a reducer body 1, an output shaft 2 is provided at the output end of the reducer body 1, an input shaft 3 is provided at the input end of the reducer body 1, a driving groove 4 is provided at one end of the input shaft 3, a protection mechanism for overload protection is provided on the input shaft 3, and the protection mechanism comprises: a protection component, comprising a torque rod 5 fixed on the input shaft 3 by a fixing component, a cavity 6 is provided on the torque rod 5, a group of fracture through grooves 7 are provided on the torque rod 5, and the group of fracture through grooves 7 are connected to the cavity 6 A group of grooves 8 are provided on the torque rod 5, and a limiting block 9 is fixed in each group of grooves 8 by a spring; a connecting component is arranged in the cavity 6 for connecting the torque rod 5 that breaks after overload; when the torque rod 5 is driven to rotate by the existing driving motor, thereby driving the input shaft 3 arranged at the input end of the reducer body 1 to rotate, it can be allowed that when it is overloaded and exceeds the torque threshold, the torque rod 5 breaks at the position where the cavity 6 and the rectangular through groove 16 are provided, thereby avoiding damage to internal parts caused by its continuous operation, thereby reducing the damage rate of major parts and avoiding increased maintenance costs.

[0024] In this embodiment, the fixing assembly includes through holes 10, a group of through holes 10 are opened on the input shaft 3, and the group of through holes 10 are distributed in a circumferential array, a group of damping slide grooves 11 are opened on the input shaft 3, and the group of damping slide grooves 11 are distributed in a circumferential array, a damping slider 12 is slidably connected in the damping slide groove 11, a group of damping sliders 12 are fixedly connected to a moving ring 13, a group of positioning blocks 14 are fixedly connected to one side of the moving ring 13, and the group of positioning blocks 14 are distributed in a circumferential array, and a group of limiting blocks 9 are all opened with positioning grooves 11. 5, a group of rectangular through grooves 16 are opened on the input shaft 3, and the group of rectangular through grooves 16 are distributed in a circumferential array, the side wall of the moving ring 13 is fixedly connected to a fixed ring 17 through a fixed rod, and a group of extrusion blocks 18 are fixedly connected to the inner wall of the fixed ring 17, and the group of extrusion blocks 18 are distributed in a circumferential array, and the group of extrusion blocks 18 are respectively located in a group of rectangular through grooves 16, one end of the limiting block 9 is an inclined surface 19, and the connecting component includes a rotating groove 20, a pair of rotating grooves 20 are respectively opened on the opposite side walls of the cavity 6, and the pair of rotating grooves 20 are both The rotatable connection is provided with a rotating block 21, and a connecting rod is fixed between the opposite side walls of a pair of rotating blocks 21; the limiting block 9 provided allows the staff to quickly install the torque rod 5 into the driving groove 4, and the limiting block 9 is inserted into the through hole 10 on the input shaft 3 for fixing, and a group of damping sliders 12, a moving ring 13 and a group of positioning blocks 14 are provided, which can be inserted into the positioning groove 15 opened on a group of limiting blocks 9, so that when the torque rod 5 drives the input shaft 3 to rotate, the spring drives the limiting block 9 to vibrate, causing the limiting block 9 to loosen, and the damping slider 12 provided is slidably connected in the damping slide groove 11 to have a damping effect, and can move when pushed by an external force, otherwise it cannot move, and a group of extrusion blocks 18 are provided on the inner circular wall of the fixing ring 17 to extrude the limiting block 9, so that it is convenient for the staff to disassemble and replace the broken torque rod 5, and the design of a pair of rotating blocks 21 and the connecting rod can connect the broken torque rod 5, and it is convenient to take out the torque rod 5 located in the driving groove 4.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] During operation, the torque rod 5 is driven to rotate by the existing driving motor, thereby driving the input shaft 3 set at the input end of the reducer body 1 to rotate. When it is overloaded and exceeds the torque threshold, the torque rod 5 breaks at the position where the cavity 6 and the rectangular through groove 16 are opened, so as to avoid damage to internal parts caused by continuous operation, thereby reducing the damage rate of major parts and avoiding increased maintenance costs. The limiting block 9 can allow the staff to quickly install the torque rod 5 into the driving groove 4, and fix it by clamping the limiting block 9 into the through hole 10 on the input shaft 3. Moreover, a group of damping sliders 12, a moving ring 13 and a group of positioning blocks 14 can be clamped into a group of The locking groove 15 opened on the limiting block 9 can prevent the spring from driving the limiting block 9 to vibrate and cause the limiting block 9 to loosen when the torque rod 5 drives the input shaft 3 to rotate. The damping slider 12 is slidably connected in the damping slide groove 11 to have a damping effect. It can move when pushed by an external force, otherwise it cannot move. A group of extrusion blocks 18 are arranged on the inner circular wall of the fixing ring 17 to squeeze the limiting block 9, so that it is convenient for the staff to disassemble and replace the broken torque rod 5. Through the design of a pair of rotating blocks 21 and a connecting rod, the broken torque rod 5 can be connected, which is convenient for taking out the torque rod 5 located in the driving groove 4.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed reducer overload self-protection structure, comprising a speed reducer body (1), characterized in that: The output end of the reducer body (1) is provided with an output shaft (2), the input end of the reducer body (1) is provided with an input shaft (3), one end of the input shaft (3) is provided with a driving groove (4), and a protection mechanism for overload protection is provided on the input shaft (3), the protection mechanism comprising: The protection component comprises a torque rod (5) fixed on the input shaft (3) by a fixing component, the torque rod (5) is provided with a cavity (6), the torque rod (5) is provided with a group of fracture through grooves (7), a group of the fracture through grooves (7) is connected with the cavity (6), the torque rod (5) is provided with a group of grooves (8), and a limiting block (9) is fixed in each of the group of grooves (8) by a spring; A connecting assembly is arranged in the cavity (6) and is used to connect a torque rod (5) that is broken after being overloaded.

2. The overload self-protection structure of a reducer according to claim 1, characterized in that: The fixing component comprises through holes (10), a group of the through holes (10) is opened on the input shaft (3), and the group of through holes (10) is distributed in a circular array, and a group of damping grooves (11) is opened on the input shaft (3), and the group of damping grooves (11) is distributed in a circular array.

3. The overload self-protection structure of a reducer according to claim 2, characterized in that: A damping slider (12) is slidably connected in the damping slide groove (11), a group of the damping sliders (12) are fixedly connected to a moving ring (13), a group of positioning blocks (14) are fixedly connected to one side of the moving ring (13), and the group of positioning blocks (14) are distributed in a circular array, and a group of the limiting blocks (9) are all provided with positioning grooves (15).

4. The overload self-protection structure of a reducer according to claim 3 is characterized in that: The input shaft (3) is provided with a group of rectangular through grooves (16), and the group of rectangular through grooves (16) are distributed in a circumferential array, and the side wall of the movable ring (13) is fixedly connected to a fixed ring (17) via a fixed rod.

5. The overload self-protection structure of a reducer according to claim 4, characterized in that: A group of extrusion blocks (18) are fixedly connected to the inner wall of the fixing ring (17), and the group of extrusion blocks (18) are distributed in a circular array. The group of extrusion blocks (18) are respectively located in a group of rectangular through grooves (16), and one end of the limiting block (9) is an inclined surface (19).

6. The overload self-protection structure of a reducer according to claim 1, characterized in that: The connection assembly comprises a rotation groove (20), a pair of the rotation grooves (20) are respectively opened on opposite side walls of the cavity (6), a rotation block (21) is rotationally connected in the pair of rotation grooves (20), and a connecting rod is fixedly connected between opposite side walls of the pair of rotation blocks (21).

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