Speed reducer with overload protection function

Abstract

The speed reducer with the overload protection function comprises a speed reducer body, a protection mechanism is arranged at the bottom end of a fixing plate, the protection mechanism comprises a protection plate, and the protection plate is arranged outside an overload protector in a sleeving mode; the telescopic plate is connected with the inner cavity of the protection plate; the driving rod is connected with the inner cavity of the protection plate; and the protection plate can rotate and be fixed on the fixing plate through the rotating assembly. The arrangement mode that the protection plate, the telescopic plate, the driving rod, the limiting plate and the rotating assembly are matched is utilized, the telescopic plate can stretch out and draw back in the protection plate through rotation of the driving rod, and therefore the telescopic plate can stretch out to be matched with the limiting plate to protect the overload protector in the transportation process, and the telescopic plate can also stretch out to be matched with the limiting plate to protect the overload protector in the normal use process. And the position is adjusted through the rotating assembly, and the rotating assembly rotates to the vertical state, so that the motor is conveniently supported, and the stability of the speed reducer main body during operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to reducers, and in particular to a reducer with an overload protection function. Background Art

[0002] A reducer is an independent component consisting of a gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine.

[0003] The utility patent with prior art publication number CN214838216U discloses a helical worm gear reducer with overload protection, which improves the stability of motor operation by providing a helical worm gear reducer, a motor, an overload relay and a stable support mechanism;

[0004] Since the above device directly installs the overload protector at the bottom end of the motor and is unable to protect the overload protector, it is easy for the overload protector to collide with external objects during transportation, causing damage to the overload protector and making it impossible to use normally. At the same time, the above device occupies a large amount of additional space during transportation, affecting transportation loading efficiency, increasing transportation costs, and being relatively inconvenient. Utility Model Content

[0005] The purpose of the present invention is to provide a speed reducer with an overload protection function to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a reducer with an overload protection function, comprising a reducer body, a fixing plate fixedly connected to one side of the reducer body, a motor connected to the reducer body fixedly mounted on the top end of the fixing plate, and an overload protector fixedly mounted on the bottom end of the motor;

[0007] A protective mechanism is provided on the bottom end of the fixing plate, and the protective mechanism comprises:

[0008] A protective plate, the protective plate being provided and sleeved on the outside of the overload protector;

[0009] A telescopic plate, the telescopic plate being slidably interpenetratingly connected with the inner cavity of the protective plate;

[0010] A driving rod, the driving rod is rotatably connected to the inner cavity of the protective plate, and the driving rod and the telescopic plate form a screw transmission;

[0011] A limit plate, the limit plate is fixedly connected to one side of the reducer body, and the telescopic plate cooperates with the limit plate;

[0012] The protective plate can be rotated and fixed on the fixed plate through the rotating component.

[0013] Preferably, the rotating assembly includes:

[0014] A sliding rod, wherein a groove is formed at the top of the protective plate, and both ends of the sliding rod are fixedly connected to the inner wall of the groove;

[0015] Sliders, wherein the plurality of slides are all slidably and interpenetratingly connected to the slide rod, and the plurality of slides are all slidably and interpenetratingly connected to the inner cavity of the groove;

[0016] Positioning blocks, wherein the plurality of positioning blocks are respectively fixedly connected to the plurality of slide rods, the outer wall of the protective plate is provided with a slide groove for sliding the positioning blocks, and positioning holes are equidistantly provided on both sides of the inner wall of the slide groove, and the positioning blocks are slidably connected with the inner cavity of the positioning holes;

[0017] A compression spring is sleeved on the outside of the slide rod, and both ends of the compression spring are fixedly connected to a plurality of slide blocks.

[0018] Preferably, the rotating assembly further includes:

[0019] Pull rods, multiple pull rods are fixedly connected to multiple sliders respectively, and a pull groove is opened on the outer wall of the protective plate. Multiple pull rods are slidably and interlacedly connected with the inner cavity of the pull groove.

[0020] Preferably, the cross section of the fixed plate is L-shaped, and the cross sections of the protective plate and the telescopic plate are both C-shaped.

[0021] Preferably, a rubber pad is fixedly connected to one side of the telescopic plate, and an outer wall of the rubber pad is provided with an anti-slip texture.

[0022] Preferably, a knob is fixedly connected to the outer wall of the driving rod, and the outer wall of the knob is provided with an anti-slip texture.

[0023] The technical effects and advantages of this utility model are:

[0024] The utility model utilizes a setting mode in which a protective plate, a telescopic plate, a driving rod, a limit plate and a rotating assembly are coordinated. The telescopic plate can be extended and retracted inside the protective plate by rotating the driving rod, so that during transportation, the telescopic plate can be extended and retracted to cooperate with the limit plate to protect the overload protector. During normal use, the position can be adjusted by the rotating assembly and rotated to a vertical state, which is convenient for supporting the motor and improving the stability of the reducer body during operation. The above-mentioned mechanism is dual-purpose and does not occupy additional space, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2This is a schematic diagram of the overall front internal structure of the utility model.

[0027] Figure 3 This is a schematic diagram of the internal structure of the protective mechanism of the utility model.

[0028] Figure 4 This is a schematic diagram of the internal structure of the rotating component of the utility model.

[0029] Figure 5 This is a side structural diagram of the protective mechanism of the utility model.

[0030] In the figure: 1. Reducer body; 2. Fixed plate; 3. Motor; 4. Protective mechanism; 41. Protective plate; 42. Telescopic plate; 43. Drive rod; 44. Limit plate; 45. Rotating assembly; 451. Sliding rod; 452. Sliding block; 453. Positioning block; 454. Compression spring; 455. Pull rod; 5. Overload protector; 6. Rubber pad; 7. Knob. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The utility model provides Figure 1-5 The reducer with overload protection function shown in the figure includes a reducer body 1, a fixing plate 2 is fixedly connected to one side of the reducer body 1, a motor 3 connected to the reducer body 1 is fixedly installed on the top of the fixing plate 2, and an overload protector 5 is fixedly installed on the bottom end of the motor 3;

[0033] Furthermore, a protective mechanism 4 is provided on the bottom end of the fixed plate 2, and the protective mechanism 4 includes: a protective plate 41, a telescopic plate 42, a driving rod 43, a limit plate 44 and a rotating assembly 45. The protective plate 41 is provided with a sleeve arranged on the outside of the overload protector 5; the telescopic plate 42 is slidably connected to the inner cavity of the protective plate 41; the driving rod 43 is rotatably connected to the inner cavity of the protective plate 41, and the driving rod 43 and the telescopic plate 42 form a screw transmission; the limit plate 44 is fixedly connected to one side of the reducer body 1, and the telescopic plate 42 is connected to the limit plate 44. Cooperate with each other; the protective plate 41 can be rotated and fixed on the fixed plate 2 by the rotating component 45, and the telescopic plate 42 can be extended and retracted inside the protective plate 41 by rotating the driving rod 43, so that it can be extended and cooperated with the limit plate 44 to protect the overload protector 5 during transportation, and can also be adjusted in position and rotated to a vertical state by the rotating component 45 during normal use, so as to support the motor 3 and improve the stability of the reducer body 1 during operation. The above mechanism is dual-purpose and does not take up extra space, and is easy to use.

[0034] Specifically, the rotating assembly 45 includes: a sliding rod 451, a slider 452, a positioning block 453, a compression spring 454 and a pull rod 455. A groove is provided at the top of the protective plate 41, and both ends of the sliding rod 451 are fixedly connected to the inner wall of the groove; multiple sliders 452 are slidably and interlacedly connected to the sliding rod 451, and multiple sliders 452 are slidably and interlacedly connected to the inner cavity of the groove; multiple positioning blocks 453 are respectively fixedly connected to multiple sliding rods 451, and the outer wall of the protective plate 41 is provided with a sliding groove for the positioning blocks 453 to slide. Positioning holes are equidistantly provided on both sides of the inner wall of the slide groove, and the positioning blocks 453 are slidably inserted and connected with the inner cavity of the positioning holes; the compression spring 454 is sleeved on the outside of the slide rod 451, and the two ends of the compression spring 454 are fixedly connected to multiple sliders 452 respectively. The compression spring 454 is always in a compressed state, so that a stable elastic force can be provided to the multiple positioning blocks 453 through the slider 452, so that the positioning blocks 453 can be stably inserted and connected with the positioning holes, thereby realizing the limitation of the protective plate 41 and the telescopic plate 42. Multiple pull rods 455 are respectively fixedly connected to multiple sliders 452, and a pull groove is opened on the outer wall of the protective plate 41. Multiple pull rods 455 are slidably and interlacedly connected with the inner cavity of the pull groove. The slider 452 can be pulled by the pull rod 455, so that the slider 452 can drive the positioning block 453 to disengage from the positioning hole, so that the protection plate 41 and the telescopic plate 42 can be rotated and limited by rotating and sliding inside the slide groove, and the protection state of the protective plate 41 and the telescopic plate 42 for the overload protector 5 can be changed to a supporting state for the motor 3. The operation is simple and convenient.

[0035] Furthermore, the cross-section of the fixed plate 2 is L-shaped, which facilitates the installation of the motor 3. The cross-sections of the protective plate 41 and the telescopic plate 42 are both C-shaped, so that the protective plate 41 and the telescopic plate 42 can wrap the overload protector 5, thereby achieving all-round protection of the overload protector 5 during transportation, and can also maintain stable contact with the installation surface when supporting the motor 3.

[0036] Furthermore, a rubber pad 6 is fixedly connected to one side of the telescopic plate 42, and the outer wall of the rubber pad 6 is provided with an anti-slip texture. The provision of the rubber pad 6 increases the friction between the telescopic plate 42 and the contact surface, so that the telescopic plate 42 can fit the contact surface more stably.

[0037] Furthermore, the outer wall of the driving rod 43 is fixedly connected with a knob 7 , and the outer wall of the knob 7 is provided with an anti-skid texture. The setting of the anti-skid texture makes it convenient for the operator to turn the knob 7 to realize the rotation of the driving rod 43 .

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reducer with overload protection function, comprising: A reducer body (1), wherein a fixing plate (2) is fixedly connected to one side of the reducer body (1), a motor (3) connected to the reducer body (1) is fixedly mounted on the top end of the fixing plate (2), and an overload protector (5) is fixedly mounted on the bottom end of the motor (3); The invention is characterized in that a protective mechanism (4) is provided on the bottom end of the fixing plate (2), and the protective mechanism (4) comprises: A protective plate (41), wherein the protective plate (41) is provided and sleeved on the outside of the overload protector (5); a telescopic plate (42), wherein the telescopic plate (42) is slidably interpenetratingly connected with the inner cavity of the protective plate (41); A driving rod (43), wherein the driving rod (43) is rotatably connected to the inner cavity of the protective plate (41), and the driving rod (43) and the telescopic plate (42) form a screw transmission; A limiting plate (44), the limiting plate (44) is fixedly connected to one side of the reducer body (1), and the telescopic plate (42) and the limiting plate (44) cooperate with each other; A rotating assembly (45) is provided, wherein the protective plate (41) can be rotated and fixed on the fixed plate (2) via the rotating assembly (45).

2. The reducer with overload protection function according to claim 1, characterized in that: The rotating assembly (45) comprises: A sliding rod (451), wherein a groove is formed at the top of the protective plate (41), and both ends of the sliding rod (451) are fixedly connected to the inner wall of the groove; Slide blocks (452), wherein the plurality of slide blocks (452) are all connected to the slide bar (451) in a sliding and interpenetrating manner, and the plurality of slide blocks (452) are all connected to the inner cavity of the groove in a sliding and interpenetrating manner; Positioning blocks (453), wherein the plurality of positioning blocks (453) are respectively fixedly connected to the plurality of slide bars (451); the outer wall of the protective plate (41) is provided with a slide groove for the positioning blocks (453) to slide; positioning holes are equidistantly provided on both sides of the inner wall of the slide groove; the positioning blocks (453) are slidably interlaced with the inner cavities of the positioning holes; A compression spring (454) is sleeved on the outside of the slide bar (451), and both ends of the compression spring (454) are fixedly connected to a plurality of slide blocks (452).

3. The reducer with overload protection function according to claim 2, characterized in that: The rotating assembly (45) further comprises: A pull rod (455), wherein the plurality of pull rods (455) are fixedly connected to the plurality of sliders (452) respectively, and a pull groove is provided on the outer wall of the protective plate (41), and the plurality of pull rods (455) are all slidably connected with the inner cavity of the pull groove.

4. The reducer with overload protection function according to claim 1, characterized in that: The cross section of the fixed plate (2) is L-shaped, and the cross sections of the protective plate (41) and the telescopic plate (42) are both C-shaped.

5. The reducer with overload protection function according to claim 1, characterized in that: A rubber pad (6) is fixedly connected to one side of the telescopic plate (42), and an outer wall of the rubber pad (6) is provided with anti-slip texture.

6. The reducer with overload protection function according to claim 1, characterized in that: The outer wall of the driving rod (43) is fixedly connected with a knob (7), and the outer wall of the knob (7) is provided with anti-slip texture.

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