Driving shaft of speed reducer

Abstract

The utility model discloses a speed reducer drive shaft, particularly relates to drive shaft technical field, including shaft head and shaft lever, shaft head far away one end outer wall of shaft lever is provided with convex key, there are a plurality of convex key, shaft head close one end of shaft lever is provided with the clamping joint, the clamping joint far away one end of shaft head is provided with the clamping groove, the clamping groove is provided with the convex key, the convex key is provided with the convex key, the clamping joint is provided with the convex key, the convex key is provided with the convex key, and the convex key is provided with the convex key. And a plurality of positioning holes are formed in the port of the clamping groove. The beneficial effects of the utility model are that: under the elastic action of the metal elastic sheet, the clamping block pops up from the inner side of the assembling groove and is in butt joint with the positioning hole, so that the assembling between the shaft head and the shaft rod is completed, and when the convex key arranged at the shaft head is damaged under the action of torsion, the convex key falls off from the positioning hole by pressing the clamping block; and then the shaft head and the shaft rod are separated, the shaft head is replaced, installation is convenient, the whole driving shaft does not need to be replaced, and the replacement cost is reduced.

Description

Technical Field

[0001] The utility model relates to a reducer drive shaft, in particular to a reducer drive shaft, and belongs to the technical field of drive shafts. Background Art

[0002] In actual project engineering, the driving solid shaft of the bucket wheel driving mechanism of the bucket wheel stacker and reclaimer and the hollow shaft sleeve of the reducer are connected by an expansion sleeve locking disc. The expansion sleeve is a keyless connection device. Its principle and purpose is to generate a huge clamping force between the driving solid shaft and the hollow shaft sleeve of the reducer through the action of high-strength tension bolts to achieve a keyless connection between the machine and the shaft. When under load, the torque, axial force or the combined load of the two is transmitted by the combined pressure of the expansion sleeve, the shaft sleeve and the shaft and the friction generated by them. The coal yard environment is very harsh. Coal dust, which is finer than flour, can penetrate into every pore and fall into the hollow shaft sleeve of the reducer, which may cause relative slippage inside the hollow shaft and the driving solid shaft. In actual operation, this design is not a very perfect mechanical design. The existing patent is a non-slip connection structure between a shaft and a sleeve, and the patent authorization number is CN 216045067 U. The connection structure provided in the patent has good stability. During the life cycle of the equipment, the driving solid shaft and the hollow sleeve of the reducer will not slip, which is a great improvement.

[0003] However, the solid shaft and the cam of the driving mechanism in the patent authorization number CN 216045067 U are an integrally formed structure. Since the cam is subjected to a large torque, metal fatigue and breakage may occur after long-term operation. The solid shaft needs to be replaced as a whole, which is very costly. Therefore, we propose a reducer drive shaft. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a reducer drive shaft.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Design a reducer drive shaft, including a shaft head and a shaft rod;

[0007] A convex key is arranged at the outer wall of one end of the shaft head away from the shaft rod, and the convex key is arranged in plurality; a clamping joint is arranged at one end of the shaft head close to the shaft rod, a clamping groove is arranged at one end of the clamping joint away from the shaft head, and a positioning hole is arranged at the end of the clamping groove, and the positioning hole is arranged in plurality;

[0008] The shaft rod is provided with a plug connector at one end close to the shaft head, and a mounting groove is provided at the end face of the plug connector away from the clamping connector, and the mounting grooves are provided in plurality, and clamping blocks are movably provided inside the plurality of mounting grooves, and sliders are integrally formed at the outer walls on both sides of the clamping blocks, and a sliding groove is provided at the inner wall of the mounting groove corresponding to the slider, and the slider is embedded in the inner side of the sliding groove;

[0009] A gap is provided at the junction of the clamping block and the assembly groove, and a metal spring is provided inside the gap;

[0010] A guiding inclined surface is provided at the edge of the bottom of the clamping block away from the metal spring sheet, and the guiding inclined surface corresponds to the edge of the top opening of the clamping slot.

[0011] Preferably, the cam, the clamping joint, the clamping groove, the positioning hole and the shaft head are all integrally formed structures, and the shaft head is made of metal.

[0012] Preferably, the plug connector corresponds to the card slot, and the plug connector and the card slot form an embedded structure.

[0013] Preferably, the outer dimensions of the clamping block are matched with the inner dimensions of the assembly groove, and the outer dimensions of the clamping block are matched with the inner dimensions of the positioning hole.

[0014] Preferably, the metal spring piece is arranged in an inverted V-shaped structure, and elastic feet are symmetrically integrally formed at the bottom end of the metal spring piece, and the elastic feet are respectively welded to the clamping block and the inner wall of the assembly groove.

[0015] Preferably, the plug connector, the assembly groove, the slide groove and the shaft rod are an integrally formed structure, and the shaft rod is made of metal.

[0016] The utility model provides a reducer drive shaft, which has the following beneficial effects:

[0017] When the plug connector is connected to the card slot set at the card connector, the guiding inclined surface set at the card block is used to abut against the inner edge of the top of the card slot. Under the action of pressure, the metal spring sheet is pressed to deformation, and the slider is moved in conjunction with the slide slot, so that the card block is contracted to the inside of the assembly slot. When the card block corresponds to the positioning hole set at the card connector, the elastic force of the metal spring sheet makes the card block pop out from the inside of the assembly slot and connect with the positioning hole, thereby completing the assembly between the shaft head and the shaft rod. When the convex key set at the shaft head is damaged by the torsion, the card block is pressed to make it fall off from the positioning hole, and then the shaft head is separated from the shaft rod and the shaft head is replaced. It is not only convenient to install, but also does not require the replacement of the entire drive shaft, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a three-dimensional structural schematic diagram of a reducer drive shaft proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the shaft head structure of a reducer drive shaft proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the plug-in connector structure of a reducer drive shaft proposed by the utility model;

[0021] Figure 4 This is an enlarged schematic diagram of part A of a reducer drive shaft proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of a block structure of a reducer drive shaft proposed by the utility model;

[0023] Figure 6 The utility model is a schematic diagram of a metal spring structure of a reducer drive shaft.

[0024] In the figure: 1, shaft head; 2, shaft rod; 3, convex key; 4, card joint; 5, card slot; 6, positioning hole; 7, plug joint; 8, assembly slot; 9, card block; 10, slider; 11, slide slot; 12, metal spring; 13, elastic foot; 14, guide slope. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1-6 , a reducer drive shaft, comprising a shaft head 1 and a shaft rod 2;

[0027] A convex key 3 is provided at the outer wall of the end of the shaft head 1 away from the shaft rod 2, and the convex key 3 is provided in plurality. A clamping joint 4 is provided at the end of the shaft head 1 close to the shaft rod 2. A clamping groove 5 is provided at the end of the clamping joint 4 away from the shaft head 1. A positioning hole 6 is provided at the end of the clamping groove 5, and the positioning hole 6 is provided in plurality.

[0028] A plug connector 7 is provided at one end of the shaft rod 2 close to the shaft head 1, and a mounting groove 8 is provided at the end surface of the plug connector 7 away from the clamping joint 4, and a plurality of mounting grooves 8 are provided, and a clamping block 9 is movably provided inside the plurality of mounting grooves 8, and a slider 10 is integrally formed at the outer wall on both sides of the clamping block 9, and a slide groove 11 is provided at the inner wall of the mounting groove 8 corresponding to the slider 10, and the slider 10 is embedded in the inner side of the slide groove 11;

[0029] A gap is provided at the junction of the clamping block 9 and the assembly groove 8, and a metal spring sheet 12 is provided inside the gap;

[0030] A guiding slope 14 is provided at the edge of the bottom of the clamping block 9 away from the metal spring 12, and the guiding slope 14 corresponds to the edge of the top opening of the clamping slot 5;

[0031] It should be noted that when the shaft head 1 is connected to the shaft rod 2, the plug connector 7 is connected to the card slot 5 set at the card connector 4, and the guide inclined surface 14 set at the card block 9 is used to abut against the inner edge of the top of the card slot 5. Under the action of pressure, the metal spring piece 12 is pressed to deform, and the slider 10 is moved in conjunction with the slide groove 11, so that the card block 9 is retracted to the inside of the assembly groove 8. When the card block 9 corresponds to the positioning hole 6 set at the card connector 4, the elastic force of the metal spring piece 12 makes the card block 9 pop up from the inside of the assembly groove 8 and connect with the positioning hole 6, thereby completing the assembly between the shaft head 1 and the shaft rod 2. When the convex key 3 set at the shaft head 1 is damaged by the torsion force, the card block 9 is pressed to make it fall off from the positioning hole 6, and then the shaft head 1 is separated from the shaft rod 2. The shaft head 1 is replaced, which is not only convenient to install, but also does not require the replacement of the entire drive shaft, thereby reducing the cost of replacement.

[0032] like Figure 1 , Figure 2 , Figure 4 As shown, the convex key 3, the clamping joint 4, the clamping groove 5, the positioning hole 6 and the shaft head 1 are all integrally formed structures, and the shaft head 1 is made of metal, the plug joint 7, the assembly groove 8, the slide groove 11 and the shaft rod 2 are integrally formed structures, and the shaft rod 2 is made of metal, the plug joint 7 corresponds to the clamping groove 5, and the plug joint 7 and the clamping groove 5 form an embedded structure;

[0033] It should be noted that the positioning stability between the card connector 4 and the plug connector 7 is ensured, thereby ensuring the stability of the entire drive shaft during operation.

[0034] like Figure 1 , Figure 2 , Figure 5 As shown, the outer dimensions of the clamping block 9 are matched with the inner dimensions of the assembly groove 8, and the outer dimensions of the clamping block 9 are matched with the inner dimensions of the positioning hole 6;

[0035] It should be noted that the clearance fit between the clamping block 9, the assembly groove 8 and the positioning hole 6 ensures the stability of the shaft head 1 and the shaft rod 2 after assembly.

[0036] like Figure 4 , Figure 6 As shown, the metal spring 12 is arranged in an inverted V-shaped structure, and the bottom end of the metal spring 12 is symmetrically integrally formed with an elastic foot 13, and the elastic foot 13 is respectively welded to the clamping block 9 and the inner wall of the assembly groove 8;

[0037] It should be noted that it is convenient to assemble the metal spring sheet 12 .

[0038] Working principle: When in use, when the shaft head 1 is connected to the shaft rod 2, the plug connector 7 is connected to the card slot 5 set at the card connector 4, and the guide slope 14 set at the card block 9 is used to abut against the inner edge of the top of the card slot 5. Under the action of pressure, the metal spring sheet 12 is pressed to deform, and the slider 10 is moved in conjunction with the slide groove 11, so that the card block 9 is retracted to the inside of the assembly groove 8. When the card block 9 corresponds to the positioning hole 6 set at the card connector 4, the elastic force of the metal spring sheet 12 causes the card block 9 to pop out from the inside of the assembly groove 8 and connect with the positioning hole 6, thereby completing the assembly between the shaft head 1 and the shaft rod 2. When the convex key 3 set at the shaft head 1 is damaged by the torsion, the card block 9 is pressed to make it fall off from the positioning hole 6, and then the shaft head 1 is separated from the shaft rod 2, and the shaft head 1 is replaced.

[0039] 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 reducer drive shaft, characterized in that: It comprises a shaft head (1) and a shaft rod (2); A convex key (3) is provided on the outer wall of the end of the shaft head (1) away from the shaft rod (2), and the convex key (3) is provided in plurality; a clamping joint (4) is provided at the end of the shaft head (1) close to the shaft rod (2); a clamping groove (5) is provided at the end of the clamping joint (4) away from the shaft head (1); a positioning hole (6) is provided at the end of the clamping groove (5), and the positioning hole (6) is provided in plurality; A plug connector (7) is provided at one end of the shaft rod (2) close to the shaft head (1), and a mounting groove (8) is provided at the end surface of the plug connector (7) away from the clamping joint (4), and a plurality of the mounting grooves (8) are provided, and a clamping block (9) is movably provided inside each of the plurality of mounting grooves (8), and a sliding block (10) is integrally formed on the outer walls on both sides of the clamping block (9), and a sliding groove (11) is provided on the inner wall of the mounting groove (8) corresponding to the sliding block (10), and the sliding block (10) is embedded in the inner side of the sliding groove (11); A gap is provided at the junction of the clamping block (9) and the assembly groove (8), and a metal spring sheet (12) is provided inside the gap; A guiding inclined surface (14) is provided at the edge of the bottom of the clamping block (9) away from the metal spring sheet (12), and the guiding inclined surface (14) corresponds to the inner edge of the top opening of the clamping slot (5).

2. A reducer drive shaft according to claim 1, characterized in that: The convex key (3), the clamping joint (4), the clamping groove (5), the positioning hole (6) and the shaft head (1) are all integrally formed structures, and the shaft head (1) is made of metal.

3. A reducer drive shaft according to claim 1, characterized in that: The plug connector (7) corresponds to the card slot (5), and the plug connector (7) and the card slot (5) form an embedded structure.

4. A reducer drive shaft according to claim 1, characterized in that: The outer dimensions of the clamping block (9) are matched to the inner dimensions of the assembly groove (8), and the outer dimensions of the clamping block (9) are matched to the inner dimensions of the positioning hole (6).

5. The reducer drive shaft according to claim 1, characterized in that: The metal spring (12) is arranged in an inverted V-shaped structure, and a spring foot (13) is symmetrically integrally formed at the bottom end of the metal spring (12), and the spring foot (13) is respectively welded to the clamping block (9) and the inner wall of the assembly groove (8).

6. A reducer drive shaft according to claim 1, characterized in that: The plug connector (7), the assembly groove (8), the slide groove (11) and the shaft rod (2) are an integrally formed structure, and the shaft rod (2) is made of metal.

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