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End-surface key structure for coupler

A technology of couplings and end-face keys, applied in the direction of couplings, elastic couplings, key connections, etc., can solve problems such as frequent occurrence of couplings, increase firmness, improve stability, and improve transmission torque efficiency effect

Inactive Publication Date: 2014-12-10
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors have found in practice that due to the defects in the above-mentioned standards, the above-mentioned faults frequently occur in the actual use of the coupling

Method used

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  • End-surface key structure for coupler
  • End-surface key structure for coupler
  • End-surface key structure for coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The end face key structure for the coupling of this embodiment is as follows: figure 1 and figure 2 As shown, it includes the key 1 and the keyway 3 made on the end face of the coupling flange 2. The two ends of the key 1 are formed with through holes 4 for fastening the key 1 and the coupling flange 2. , the fastener of this embodiment adopts the screw 8 commonly used for the end face key of the existing coupling. like figure 1 and image 3 As shown, the side of the key 1 forms a boss 6 that can be embedded in the shaft hole 5 of the coupling flange 2; when the key 1 cooperates with the keyway 3, the boss 6 and the shaft hole 5 form a contact surface that matches each other, that is, the boss The profile of 6 adapts to the shape of shaft coupling flange 2 shaft holes 5 (certainly boss 6 and shaft holes 5 also can form line contact). The keyway 3 is formed by the end face keyway located on the end face of the coupling flange 2 .

[0029] like image 3 As shown, t...

Embodiment 2

[0032] The end face key structure for the coupling of this embodiment is as follows: Figure 5 and Figure 6 As shown, it is changed on the basis of Embodiment 1, except that it is the same as Embodiment 1. The differences are: 1) The keyway 3 traverses the end face of the coupling flange 2; 2) The through hole 4 and the coupling method Align the bolt hole 7 on the end face of the flange 2; 3) Remove the screw 8, and fasten the key 1 and the coupling flange 2 with the bolt 9 through the through hole 4 and the bolt hole 7; 4) The contact surface of the key 1 and the keyway 3 It is a transition fit, that is, the thickness b of the key 1 is basically equal to the width h of the key groove 3; 5) The contact surface between the boss 6 and the shaft hole 5 is a transition fit.

Embodiment 3

[0034] The end face key structure for the coupling of this embodiment is as follows: Figure 7 and Figure 8 As shown, it is changed on the basis of the second embodiment, except that it is the same as the second embodiment. The difference is that the boss 6 is formed on the two sides of the key 1, one of which is a single-step boss, and the other The sides are double stepped bosses.

[0035] Obviously, the shape of the boss 6 can be any shape suitable for the shape of the shaft hole 5 of the coupling flange 2 .

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PUM

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Abstract

The invention relates to an end-surface key structure for a coupler, belonging to the technical field of key coupling pieces. The end-surface key structure comprises a key and a key groove manufactured on the end surface of a coupling flange; and the two ends of the key are manufactured with through holes in which fastening pieces for fixing the key and the coupling flange are arranged in a penetrating manner. The end-surface key structure leads the key to be embedded into a shaft hole of the coupling flange to be repositioned and fixed in the radial direction and increases the contact between the key and the coupling flange; therefore, the connection firmness between the key and the coupling flange is increased so as to ensure that the key does not deform and drop off to avoid failure; and the efficiency of torque transmission of the coupler is also improved.

Description

technical field [0001] The invention relates to an end face key and belongs to the technical field of key joints. Background technique [0002] The coupling is an important device used to connect the driving shaft and the driven shaft in the transmission mechanism. It generally consists of two halves, which are respectively connected with the driving shaft and the driven shaft. Commonly used couplings include diaphragm couplings, drum gear couplings, universal couplings, safety couplings, elastic couplings, etc. Hinged bolts or ordinary high-strength bolts are often used for the connection of the coupling, and it is difficult to disassemble and assemble the coupling connected by the hinged bolt; the connection form of the coupling connected by ordinary high-strength bolts usually adopts the end-face key or end-face tooth structure; The processing accuracy and cost of the end face gear are relatively high, and its cost is generally two to three times that of the end face key...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B3/00F16D3/16
Inventor 吴索团袁亚东
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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