Coupling for electric loader

Abstract

The utility model discloses a coupler for an electric loader, which belongs to the technical field of loader couplings, and comprises a front coupling piece and a rear coupling piece, the front coupling piece comprises a first shaft body and a second shaft body, one end of the first shaft body is provided with a first shaft hole, one end of the second shaft body is provided with a round groove, and the round groove is provided with a second shaft hole. A cross-shaped convex block is arranged in the circular groove; the rear coupling comprises a third shaft body and a fourth shaft body, a second shaft hole is formed in one end of the third shaft body, and a cross-shaped groove is formed in one end of the fourth shaft body; the cross-shaped protruding block is in butt joint with the cross-shaped groove. The anti-fatigue capability can be improved, the buffering cushion is prevented from deviating, and then the coupler is prevented from being damaged due to long-term use; the oil pump shaft and the motor shaft can rotate cooperatively, the motor shaft is prevented from abutting against the oil pump shaft, abrasion of the oil pump shaft and the motor shaft is avoided, and stable transmission of torque is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of loader couplings, and in particular relates to a coupling for an electric loader. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] A coupling is a mechanical part used to connect two shafts (driving shaft and driven shaft) in different mechanisms so that they rotate together to transmit torque. In high-speed and heavy-load power transmission, some couplings also have the functions of buffering, vibration reduction and improving the dynamic performance of the shaft system. The coupling consists of two halves, which are connected to the driving shaft and the driven shaft respectively. Generally, most power machines are connected to the working machine with the help of couplings.

[0004] Electric loaders include many structures. The motor shaft of the electric loader needs a coupling to transmit torque to the oil pump shaft. At present, the coupling connecting the motor shaft to the oil pump shaft is prone to fatigue after long-term use, causing the buffer pad to shift, thereby causing damage to the coupling, causing the oil pump shaft and the motor shaft to fall off, thereby affecting the operation of the electric loader; and when some couplings are in use, the oil pump shaft will hit the motor shaft, causing wear of the oil pump shaft and the motor shaft, thereby transmitting hard torque. Utility Model Content

[0005] In view of the above problems, the utility model provides a coupling for an electric loader, which can improve fatigue resistance, avoid buffer pad offset, and thus prevent the coupling from being damaged due to long-term use; it can also enable the oil pump shaft and the motor shaft to rotate in coordination, prevent the motor shaft from hitting the oil pump shaft, avoid wear of the oil pump shaft and the motor shaft, and ensure stable transmission of torque.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coupling for an electric loader comprises a front coupling and a rear coupling, wherein the front coupling comprises a first shaft body and a second shaft body, wherein one end of the first shaft body is provided with a first shaft hole, one end of the second shaft body is provided with a circular groove, and a cross protrusion is provided in the circular groove; the rear coupling comprises a third shaft body and a fourth shaft body, wherein one end of the third shaft body is provided with a second shaft hole, and one end of the fourth shaft body is provided with a cross groove; and the cross protrusion is butted against the cross groove.

[0008] Furthermore, the height of the cross protrusion is greater than the depth of the cross groove, and after the front coupling and the rear coupling are butted against each other, there is a gap between the upper surface of the cross protrusion and the bottom surface of the cross groove.

[0009] Furthermore, the end of the cross groove passes through the side wall of the fourth shaft body.

[0010] Further, the end of the cross bump is fixedly connected to the inner wall surface of the circular groove, and the bottom of the cross bump is fixedly connected to the bottom surface of the circular groove.

[0011] Further, the first shaft hole and the second shaft hole are connected to the transmission shaft.

[0012] Further, the first shaft body and the second shaft body are of an integrated structure, and the third shaft body and the fourth shaft body are of an integrated structure.

[0013] Further, a first circular hole is provided on the side wall surface of the first shaft body, and a first slotted groove is provided at one end of the first circular hole.

[0014] Further, the first slotted groove penetrates through the side wall surface of the first shaft body, and the first slotted groove communicates with the first shaft hole.

[0015] Further, a second circular hole is provided on the side wall surface of the third shaft body, and a second slotted groove is provided at one end of the second circular hole.

[0016] Further, the second slotted groove penetrates through the side wall surface of the third shaft body, and the second slotted groove communicates with the second shaft hole.

[0017] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0018] The present utility model is provided with a front coupling and a rear coupling, which are connected to the motor shaft and the oil pump shaft through shaft holes. The front coupling is provided with a cross bump, and the rear coupling is provided with a cross groove. The cross bump is docked with the cross groove, and there is a gap in the middle of the docked rear coupling, effectively preventing the motor shaft from hitting the oil pump shaft, enabling the oil pump shaft and the motor shaft to rotate in coordination, avoiding wear of the oil pump shaft and the motor shaft, and ensuring stable transmission of torque; and through the engagement of the cross bump and the cross groove, the connection is firm enough to improve the anti-fatigue ability, avoid the offset of the buffer pad, and further avoid damage of the coupling due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0020] Figure 1 is a three-dimensional structure diagram of the coupling for a new type of electric loader of the present utility model;

[0021] Figure 2 is a split view of the coupling for a new type of electric loader of the present utility model;

[0022] Figure 3It is a cross-sectional view of a novel coupling for an electric loader of the utility model;

[0023] Figure 4 It is a front view of the novel coupling for electric loader of the utility model;

[0024] In the figure: 1, front coupling; 11, first shaft body; 12, first circular hole; 13, first slot; 14, first shaft hole; 15, second shaft body; 16, circular groove; 17, cross protrusion;

[0025] 2. Rear coupling; 21. Third shaft body; 22. Second circular hole; 23. Second slot; 24. Second shaft hole; 25. Fourth shaft body; 26. Cross groove; 3. Gap. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] At present, the coupling connecting the motor shaft to the oil pump shaft is prone to fatigue after long-term use, which causes the buffer pad to shift, thereby causing damage to the coupling, causing the oil pump shaft and the motor shaft to fall off, thereby affecting the operation of the electric loader; and when some couplings are in use, the oil pump shaft will hit the motor shaft, causing wear of the oil pump shaft and the motor shaft, thereby transmitting hard torque.

[0028] The utility model is described in detail below in conjunction with the accompanying drawings. The present embodiment discloses a coupling for an electric loader, such as Figure 1 As shown, it includes a front coupling 1 and a rear coupling 2. The front coupling 1 includes a first shaft body 11 and a second shaft body 15. One end of the first shaft body 11 is provided with a first shaft hole 14, one end of the second shaft body 15 is provided with a circular groove 16, and a cross protrusion 17 is provided in the circular groove 16; the rear coupling includes a third shaft body 21 and a fourth shaft body 25. One end of the third shaft body 21 is provided with a second shaft hole 24, and one end of the fourth shaft body 25 is provided with a cross groove 26; the cross protrusion 17 is connected to the cross groove 26.

[0029] The coupling is formed by docking the front coupling and the rear coupling, and is connected to the motor shaft and the oil pump shaft through the first shaft hole 14 and the second shaft hole 24. The front coupling is provided with a cross-shaped protrusion 17, and the rear coupling is provided with a cross-shaped groove 26. The cross-shaped protrusion 17 is docked with the cross-shaped groove 26. After docking, there is a gap 3 in the middle of the coupling, which effectively prevents the motor shaft from hitting the oil pump shaft, enables the oil pump shaft and the motor shaft to rotate in coordination, avoids wear of the oil pump shaft and the motor shaft, and ensures stable torque transmission. And through the engagement of the cross-shaped protrusion 17 and the cross-shaped groove 26, the connection is firm enough to improve the anti-fatigue ability, avoid the offset of the buffer pad, and further avoid damage to the coupling due to long-term use.

[0030] The end of the cross-shaped groove 26 penetrates through the side wall of the fourth shaft body 25. The end of the cross-shaped protrusion 17 is fixedly connected to the inner wall surface of the circular groove 16, and the bottom of the cross-shaped protrusion 17 is fixedly connected to the bottom surface of the circular groove 16. As Figure 2 shown, the cross-shaped protrusion 17 divides the circular groove 16 into four fan-shaped grooves, and the side surface of the cross-shaped protrusion 17 is in close contact with the inner surface of the cross-shaped groove 26.

[0031] As Figure 3 and Figure 4 shown, the height of the cross-shaped protrusion 17 is greater than the depth of the cross-shaped groove 26. After the front coupling and the rear coupling are docked, there is a gap 3 between the upper surface of the cross-shaped protrusion 17 and the bottom surface of the cross-shaped groove 26. The width of the gap 3 is 1 mm. By setting the gap 3, direct contact between the shafts is avoided, and the motor shaft is prevented from hitting the oil pump shaft. The width of the gap 3 can be set according to actual needs. If a larger gap 3 is required, the depth of the cross-shaped groove 26 can be reduced during design; if a smaller gap 3 is required, the depth of the cross-shaped groove 26 can be increased during design.

[0032] The materials of the cross-shaped protrusion 17 and the cross-shaped groove 26 are both elastic materials. The cross-shaped protrusion 17 meshes with the cross-shaped groove 26 to form a fully enclosed structure for buffering and shock absorption and compensating for shaft offset.

[0033] The first shaft hole 14 and the second shaft hole 24 are connected to the transmission shaft. The first shaft body 11 and the second shaft body 15 are an integrated structure, and the third shaft body 21 and the fourth shaft body 25 are an integrated structure. The first shaft body 11 and the second shaft body 15 together form the front coupling member 1, and the third shaft body 21 and the fourth shaft body 25 together form the rear coupling member 2. It is connected to the oil pump shaft through the first shaft hole 14 and to the motor shaft through the second shaft hole 24, thereby realizing torque transmission.

[0034] A first circular hole 12 is provided on the side wall surface of the first shaft body 11, and a first slot 13 is provided at one end of the first circular hole 12. The first slot 13 penetrates through the side wall surface of the first shaft body 11, and the first slot 13 communicates with the first shaft hole 14. A second circular hole 22 is provided on the side wall surface of the third shaft body 21, and a second slot 23 is provided at one end of the second circular hole 22. The second slot 23 penetrates through the side wall surface of the third shaft body 21, and the second slot 23 communicates with the second shaft hole 24. The motor is connected to the coupling, and the rear end of the coupling is connected to the pump shaft. Thread sealant is applied when installing the fastening bolts in the second circular hole 22. The purpose of providing the second slot 23 is to leave space for installing the fastening bolts in the second circular hole 22, so as to fasten the motor shaft and the pump shaft.

[0035] Although the specific implementation manners of the present invention have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A coupling for an electric loader, characterized in that, It includes a front coupling member and a rear coupling member. The front coupling member includes a first shaft body and a second shaft body. One end of the first shaft body is provided with a first shaft hole, and one end of the second shaft body is provided with a circular groove, and a cross-shaped convex block is arranged in the circular groove; the rear coupling member includes a third shaft body and a fourth shaft body. One end of the third shaft body is provided with a second shaft hole, and one end of the fourth shaft body is provided with a cross-shaped groove; the cross-shaped convex block is docked with the cross-shaped groove.

2. The coupling for an electric loader according to claim 1, characterized in that, The height of the cross-shaped convex block is greater than the depth of the cross-shaped groove, and there is a gap between the upper surface of the cross-shaped convex block and the bottom surface of the cross-shaped groove after the front coupling member and the rear coupling member are docked.

3. The coupling for an electric loader according to claim 1, characterized in that, The end of the cross-shaped groove penetrates through the side wall of the fourth shaft body.

4. The coupling for an electric loader according to claim 1, characterized in that, The end of the cross-shaped convex block is fixedly connected to the inner wall surface of the circular groove, and the bottom of the cross-shaped convex block is fixedly connected to the bottom surface of the circular groove.

5. The coupling for an electric loader according to claim 1, characterized in that, The first shaft hole and the second shaft hole are connected to a transmission shaft.

6. The coupling for an electric loader according to claim 1, wherein The first shaft body and the second shaft body are of an integral structure, and the third shaft body and the fourth shaft body are of an integral structure.

7. The coupling for an electric loader according to claim 1, wherein, A first circular hole is arranged on the side wall surface of the first shaft body, and a first slot is arranged at one end of the first circular hole.

8. The coupling for an electric loader according to claim 7, characterized in that, The first slot penetrates through the side wall surface of the first shaft body, and the first slot is communicated with the first shaft hole.

9. The coupling for an electric loader according to claim 1, wherein, A second circular hole is arranged on the side wall surface of the third shaft body, and a second slot is arranged at one end of the second circular hole.

10. A coupling for an electric loader according to claim 9, characterized in that, The second slot penetrates through the side wall surface of the third shaft body, and the second slot is communicated with the second shaft hole.

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