Embedded disc type speed reducer for ZD7 series electric switch machine

Abstract

The utility model provides an embedded disc speed reducer for a ZD7 series electric switch machine, which is used for solving the technical problems that a speed reducer shell and a fixed chuck of an existing friction connection speed reducer are of a split structure, the influence of temperature and humidity of a working environment is large, and corrosion and rusting are easy to generate. The speed reducer comprises a speed reducer shell, an adjusting end cover, and an inner friction plate, an outer friction plate and a spring which are positioned in the speed reducer shell. The speed reducer shell comprises a front cavity and a rear cavity which are connected in an embedded mode. And the front cavity is adjustably connected with the adjusting end cover and is used for adjusting friction current. A clamping assembly is arranged on the rear cavity, a clamping boss is arranged on the adjusting end cover, the clamping assembly is connected with the clamping boss in a clamped mode, and after the adjusting end cover rotates in place, locking of the speed reducer shell and the adjusting end cover is achieved.

Description

Technical Field

[0001] The utility model relates to a reducer for an electric switch machine, in particular to an inlaid disc type reducer for a ZD7 series electric switch machine. Background Art

[0002] A disc reducer, also known as a disc friction reducer, is a device that uses friction to provide overload protection. It utilizes a disc-type layout, transmitting power through a series of friction discs. Its compact structure and minimal footprint make it suitable for the limited space within electric switch machines.

[0003] Chinese patent CN205001454U discloses a friction coupling reducer for the ZD6 series electric switch machine. The second part of the reducer, from the reducer housing to the adjustment end cover, includes an inner friction plate, an outer friction plate, a spring, a fixed chuck and an adjustment end cover, which form a friction coupling to achieve the adjustment function of the friction current. However, its disadvantage is that the reducer housing and the fixed chuck are split structures and connected together by bolts. The split structure is greatly affected by the temperature and humidity of the working environment, and is prone to corrosion and rust, which not only reduces the life of the equipment, but also affects the adjustment of the friction current. At the same time, the split-connected reducer housing and the fixed chuck are made of cast iron, which is relatively expensive. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problem that the existing friction coupling reducer is greatly affected by the temperature and humidity of the working environment and is prone to corrosion and rust, and to propose a mosaic disc reducer for ZD7 series electric switch machine.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] A mosaic disc-type speed reducer for a ZD7 series electric switch machine comprises a speed reducer housing and an adjustment end cover. The input end of the speed reducer housing is connected to an external drive source via the speed reducer cover; the output end of the speed reducer is used to connect to an external load. At least two outer friction plates are provided in the speed reducer housing, an inner friction plate is provided between adjacent outer friction plates, and a spring is also provided in the speed reducer housing to abut against the outer friction plates.

[0007] The special feature is that the reducer housing includes a front cavity and a rear cavity which are coaxially embedded and connected;

[0008] The front cavity and the adjustment end cover are adjustably connected;

[0009] A clamping assembly is provided on the outer wall of the rear cavity;

[0010] A plurality of snap-fitting bosses are evenly arranged on the outer wall of the adjustment end cover along its circumference; the plurality of snap-fitting bosses are correspondingly snap-fitted with the snap-fitting components to lock the adjustment end cover after it is adjusted into place;

[0011] A scale ring is further provided along the circumference of the middle portion of the outer wall of the adjustment end cover, and the scale numbers on the scale ring correspond one-to-one to the multiple clamping bosses.

[0012] Furthermore, the front cavity is made of stainless steel;

[0013] The rear cavity is made of gray iron HT250 material.

[0014] Furthermore, a plurality of adjustment slots are evenly arranged along the circumference of the end surface of the adjustment end cover away from the front cavity, and are used to cooperate with an external wrench to rotate the adjustment end cover.

[0015] Furthermore, the clamping assembly includes a pressure plate seat and a pressure plate;

[0016] The pressure plate seat is provided with screw holes;

[0017] One end of the pressure plate is inserted into the pressure plate seat, and the other end of the pressure plate is provided with a clamping groove adapted to any clamping boss; a long hole is provided in the middle of the pressure plate; the length direction of the long hole is consistent with the axial direction of the reducer housing; bolts for connecting the pressure plate seat and the pressure plate are passed through the long hole and the screw hole.

[0018] Furthermore, an external thread is provided on the outer wall of the front cavity near one end of the adjustment end cover, and an internal thread is provided on the inner wall of the adjustment end cover. The external thread cooperates with the internal thread to enable the front cavity and the adjustment end cover to be adjustably connected.

[0019] Furthermore, an annular boss is provided on the inner wall of the front cavity around its circumference, and a plurality of spring grooves are provided on the annular boss for installing the spring.

[0020] Furthermore, the scale ring is made of plastic.

[0021] Furthermore, a spline is provided on the outer wall of the front cavity near one end of the rear cavity, and a groove is provided on the inner wall of the rear cavity near one end of the front cavity. The spline cooperates with the groove so that the front cavity and the rear cavity are inlaid and connected.

[0022] Beneficial effects of the utility model:

[0023] 1. The present invention comprises a reducer housing and an adjustable end cap, as well as inner and outer friction plates and springs located within the reducer housing. The reducer housing comprises a front cavity and a rear cavity connected in a mosaic pattern. The front cavity and the adjustable end cap are adjustably connected to adjust the friction current. A snap-fit ​​assembly is provided on the rear cavity, and a snap-fit ​​boss is provided on the adjustable end cap. The snap-fit ​​assembly snaps into engagement with the snap-fit ​​boss, locking the reducer housing and the adjustable end cap when the adjustable end cap is rotated into position.

[0024] 2. The material of the rear cavity in this utility model is gray iron HT250, which helps to enhance the overall strength of the reducer; the front cavity is made of stainless steel, which has good corrosion resistance.

[0025] 3. The adjustable end cap of this utility model is equipped with a snap-on boss, an adjustment slot, and a graduated ring. The numbers on the graduated ring correspond to the multiple snap-on bosses evenly distributed on one end of the adjustable end cap. Rotate the adjustable end cap until the friction current reaches the standard value. At this point, the scale corresponding to the snap-on boss is 0. As the inner or outer friction plate wears, the adjustable end cap needs to be rotated. The change in the numbers on the graduated ring corresponding to the rotation of the adjustable end cap indicates the wear of the friction plate.

[0026] 4. The inlaid disc reducer provided by the utility model can be installed in the adjustment slot by using a wrench, and the adjustment end cover can be rotated for adjustment, which can prevent the wrench from slipping and damaging other components in the switch machine.

[0027] 5. The reducer housing of the utility model has good sealing performance, simple processing technology and low process cost, and also has good versatility and can be used for ZD-6, ZD-7 and other series products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an embodiment of a mosaic disc reducer for a ZD7 series electric switch machine of the present utility model;

[0029] Figure 2 This is a cross-sectional view of an embodiment of a mosaic disc reducer for a ZD7 series electric switch machine of the utility model;

[0030] Figure 3 This is a schematic structural diagram of the reducer housing in an embodiment of the inlaid disc reducer for the ZD7 series electric switch machine of the present utility model;

[0031] Figure 4 This is a schematic structural diagram of the adjustment end cover in an embodiment of the inlaid disc reducer for the ZD7 series electric switch machine of the present utility model.

[0032] Figure 5This is a schematic diagram of the structure of the front cavity of the embodiment of the inlaid disc reducer for the ZD7 series electric switch machine of the utility model (the external thread and the annular boss are not shown)

[0033] Description of reference numerals:

[0034] 1- reducer housing, 11- front cavity, 12- rear cavity, 13- pressure plate seat, 14- pressure plate, 15- annular boss, 16- reducer cover; 2- adjustment end cover, 21- clamping boss, 22- adjustment slot, 23- scale ring; 3- inner friction plate; 4- outer friction plate; 5- spring; 6- external drive source. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] The utility model is a kind of inlaid disc reducer for ZD7 series electric switch machine. Figure 1 、 Figure 2 As shown, it includes a reducer housing 1 and an adjustment end cover 2, as well as a spring 5, an inner friction plate 3 and at least two outer friction plates 4 located inside the reducer housing 1. The inner friction plate 3 is located between two adjacent outer friction plates 4 and is connected to the internal gear, and the outer friction plate 4 is connected to the front cavity 11. An annular boss 15 is provided on the inner wall of the reducer housing 1. The annular boss 15 is provided with multiple spring grooves for mounting the spring 5, and the spring 5 also abuts against the outer friction plate 4. The input end of the reducer housing 1 is connected to the external drive source 6 through the reduction cover 16 for inputting power; the other end is adjustably connected to the adjustment end cover 2. The output end of the reducer is used to connect to an external load.

[0037] like Figure 3 As shown, the reducer housing 1 is cylindrical and includes a front cavity 11 and a rear cavity 12 which are coaxially embedded and connected; Figure 5 As shown, a spline is provided on the outer wall of the front cavity 11 near one end of the rear cavity 12, and a groove is provided on the inner wall of the rear cavity 12 near one end of the front cavity 11. The spline cooperates with the groove so that the front cavity 11 and the rear cavity 12 are embedded and connected.

[0038] An external thread is provided on the outer wall of the front cavity 11 near one end of the adjustment end cover 2, and an internal thread is provided on the inner wall of the adjustment end cover 2. The external thread and the internal thread cooperate to achieve an adjustable connection between the front cavity 11 and the adjustment end cover 2.

[0039] The front cavity 11 is made of stainless steel, which offers excellent corrosion resistance. The rear cavity 12 is made of HT250 gray iron, which helps improve the overall strength of the reducer. Compared to using only iron materials, this embodiment can reduce costs while effectively solving the problem of rust and corrosion inside the reducer housing 1.

[0040] A snap-fit ​​assembly is also provided on the rear cavity 12 for locking and adjusting the end cap 2. This assembly includes a pressure plate seat 13 and a pressure plate 14. The pressure plate seat 13 is provided with a screw hole. One end of the pressure plate 14 is inserted into the pressure plate seat 13, and the other end of the pressure plate 14 is provided with a snap-fit ​​groove. A slot is provided in the center of the pressure plate 14. The length of the slot aligns with the axial direction of the reducer housing 1. Bolts for connecting the pressure plate seat 13 and the pressure plate 14 are inserted through the slot and the screw hole.

[0041] like Figure 4 As shown, the outer wall of the adjustable end cap 2 is evenly distributed along its circumference with multiple engaging bosses 21, which engage with corresponding engaging bosses 21 on the pressure plate 14. Each engaging boss 21 mates with an engaging groove on the pressure plate 14. After the adjustable end cap 2 is properly installed, the engaging groove on the pressure plate 14 engages with the corresponding engaging boss 21. Bolts are then passed through the elongated holes and secured to the screw holes, locking the adjustable end cap 2 in place.

[0042] A plurality of adjustment slots 22 are uniformly arranged along the circumference of the end surface of the adjustment end cap 2, which is away from the front cavity 11. These slots are adapted to accommodate a wrench. The wrench is installed in the adjustment slots 22, and the adjustment end cap 2 is rotated using the wrench to prevent the wrench from slipping and damaging other components of the switch machine. In this embodiment, the adjustment slots 22 are open T-shaped slots.

[0043] The adjustment end cap 2 is also provided with a scale ring 23, located between the engaging boss 21 and the adjustment slot 22. In this embodiment, the scale ring 23 is made of plastic, and the scale numbers on it correspond one-to-one with the multiple engaging bosses 21. By rotating the adjustment end cap 2 clockwise, the friction current reaches the standard value. When the friction current reaches the standard value, the scale number corresponding to the engaging boss 21 engaged by the pressure plate 14 is 0. As the inner friction plate 3 or the outer friction plate 4 wears, the adjustment end cap 2 needs to be rotated. The change in the number on the scale ring 23 corresponding to the rotation of the adjustment end cap 2 indicates the amount of wear on the friction plate.

Claims

1. A mosaic disc-type speed reducer for a ZD7 series electric switch machine, comprising a speed reducer housing (1) and an adjustment end cover (2), wherein the input end of the speed reducer housing (1) is connected to an external drive source (6) via a speed reducer cover (16); the output end of the speed reducer is used to be connected to an external load; at least two outer friction plates (4) are provided in the speed reducer housing (1), an inner friction plate (3) is provided between two adjacent outer friction plates (4), and a spring (5) is further provided in the speed reducer housing (1) to abut against the outer friction plates (4); Its characteristics are: The reducer housing (1) comprises a front cavity (11) and a rear cavity (12) coaxially embedded and connected; The front cavity (11) and the adjustment end cover (2) are adjustably connected; A snap-on assembly is provided on the outer wall of the rear cavity (12); A plurality of clamping bosses (21) are evenly arranged on the outer wall of the adjustment end cover (2) along its circumference; the plurality of clamping bosses (21) are correspondingly clamped with the clamping assembly to lock the adjustment end cover (2) after it is adjusted into place; A scale ring (23) is further provided along the circumference of the middle portion of the outer wall of the adjustment end cover (2), and the scale numbers on the scale ring (23) correspond one-to-one to the plurality of clamping bosses (21).

2. The ZD7 series electric switch machine mosaic disc reducer according to claim 1 is characterized in that: The front cavity (11) is made of stainless steel; The rear cavity (12) is made of gray iron HT250 material.

3. The ZD7 series electric switch machine mosaic disc reducer according to claim 2 is characterized in that: A plurality of adjustment slots (22) are evenly arranged along the circumference of the end surface of the adjustment end cover (2) away from the front cavity (11), and are used to cooperate with an external wrench to rotate the adjustment end cover (2).

4. The ZD7 series electric switch machine mosaic disc reducer according to claim 3 is characterized by: The clamping assembly comprises a pressure plate seat (13) and a pressure plate (14); The pressure plate seat (13) is provided with a screw hole; One end of the pressure plate (14) is plugged into the pressure plate seat (13), and the other end of the pressure plate (14) is provided with a clamping groove adapted to any clamping boss (21); a long hole is provided in the middle of the pressure plate (14); the length direction of the long hole is consistent with the axial direction of the reducer housing (1); bolts for connecting the pressure plate seat (13) and the pressure plate (14) are passed through the long hole and the screw hole.

5. The ZD7 series electric switch machine mosaic disc reducer according to claim 3 or 4, characterized in that: An external thread is provided on the outer wall of the front cavity (11) near one end of the adjustment end cover (2), and an internal thread is provided on the inner wall of the adjustment end cover (2). The external thread and the internal thread cooperate with each other, so that the front cavity (11) and the adjustment end cover (2) are adjustably connected.

6. The ZD7 series electric switch machine mosaic disc reducer according to claim 5 is characterized in that: An annular boss (15) is provided on the inner wall of the front cavity (11) around its circumference, and a plurality of spring slots are provided on the annular boss (15) for installing the spring (5).

7. The ZD7 series inlaid disc reducer for electric switch according to claim 6 is characterized in that: The scale ring (23) is made of plastic.

8. The ZD7 series inlaid disc reducer for electric switch according to claim 7 is characterized in that: A spline is provided on the outer wall of the front cavity (11) near one end of the rear cavity (12), and a groove is provided on the inner wall of the rear cavity (12) near one end of the front cavity (11). The spline and the groove cooperate with each other, so that the front cavity (11) and the rear cavity (12) are embedded and connected.

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