Double-end positioning universal joint pin universal coupling

Abstract

A double-end positioning universal joint pin universal coupling comprises a shaft rod arranged in the middle, an input shaft installed at one end of the shaft rod through a universal joint pin and an output shaft installed at the other end of the shaft rod through a universal joint pin, and further comprises a connecting flange and a replacement assembly, and the universal joint pin is connected with the shaft rod through the replacement assembly; the replacing assembly comprises a square inserting column, square inserting holes, a long screw rod, a first middle threaded hole and a second middle threaded hole, the square inserting column is arranged in the middle of one side of the cross shaft, the square inserting holes are formed in the middles of the two ends of the shaft rod, the square inserting column is inserted into the square inserting holes, and the periphery of the square inserting column is fixedly connected with the shaft rod through side fixing bolts; the universal joint pin has the advantages that the universal joint pin is novel in structure and ingenious in conception, the worn universal joint pin can be conveniently and locally replaced, the universal joint pin does not need to be integrally replaced, the replacement cost is low, and the universal joint pin is favorable for use.

Description

Technical Field

[0001] The utility model relates to a coupling, in particular to a double-head positioned cross-axis universal coupling. Background Art

[0002] The cross-axis universal coupling is one of the most commonly used couplings. Its structural characteristics can enable two axes that are not on the same axis or have a large axis angle or a large axial movement to rotate continuously at the same angular speed, and reliably transmit torque and motion. It can be widely used to transmit torque in mechanical shaft systems in lifting, engineering transportation, mining, petroleum, shipping, coal, rubber, papermaking machinery and other heavy machinery industries.

[0003] The allowable speed range of the cross-axis universal coupling is based on the linear speed allowed by different materials of the universal coupling and the difficulty in adjusting the alignment of the two shafts of large-scale machinery and equipment. It can reduce the torsional vibration stress of the shaft section, absorb and reduce the fluctuation of the diesel engine output torque, and for diesel engine power units equipped with reduction gearboxes, it can reduce the knocking on the gear surface during variable torque. Couplings that are durable and easy to replace wearing parts should be selected. Metal elastic element flexible couplings generally have a longer service life than non-metallic elastic element flexible couplings. Sealing, lubrication and the use of non-durable cross-axis universal couplings will inevitably increase the maintenance workload.

[0004] The following deficiencies exist in the prior art: the cross-axis universal coupling is one of the most commonly used couplings. It uses its structural characteristics to connect two linkage structures that are not on the same axis through the coupling, and reliably transmits rotational force and motion. When the coupling is working, wear between its internal parts often occurs. The couplings on the market are all integrated and symmetrical in design. When half of the coupling is damaged, or one of the spline shafts and spline sleeves is abnormally worn, the entire coupling needs to be replaced. In this way, not only the other half of the undamaged coupling will also be scrapped, but also resources will be wasted, causing economic losses to related companies. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a double-head positioning cross-axis universal coupling, which effectively solves the problems mentioned in the above technical background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes a shaft rod arranged in the middle, an input shaft installed at one end of the shaft rod through a cross shaft, and an output shaft installed at the other end of the shaft rod through a cross shaft, and also includes a connecting flange and a replacement assembly, wherein the cross shaft is connected to the shaft rod through the replacement assembly;

[0007] The replacement assembly includes a square column, a square socket, a side fixing bolt, a side threaded hole, a long screw, a first middle threaded hole and a second middle threaded hole. The square column is arranged in the middle of one side of the cross shaft. Square sockets are opened in the middle of both ends of the shaft. The square column is inserted into the square sockets. The square column is connected and fixed to the shaft by side fixing bolts on all sides. Side threaded holes are opened at the positions of the square column and the shaft corresponding to the side fixing bolts. A long screw is screwed on the middle of the square column.

[0008] Preferably, one end of the input shaft and the output shaft are both provided with a connecting flange.

[0009] Preferably, a first middle threaded hole is provided on the cross shaft at a position corresponding to the long screw.

[0010] Preferably, a second middle threaded hole is provided on the shaft rod at a position corresponding to the long screw rod.

[0011] Preferably, the number of the side fixing bolts and the number of the side threaded holes are both four, and the positions correspond one to one.

[0012] Preferably, the first middle threaded hole formed on the square plug column corresponds to the second middle threaded hole formed on the shaft rod.

[0013] Beneficial effects: When the utility model is used, the input shaft and the output shaft are connected to the external device through the connecting flange. When in use, the external input power is input through the input shaft and output to the power receiving device through the output shaft. When the cross shaft is worn and needs to be replaced, the cross shaft (existing technology) is disassembled, the side fixing bolts and the long screw are unscrewed, and the cross shaft can be removed from the shaft rod after the side fixing bolts and the long screw are unscrewed, and a new cross shaft is replaced, and the square plug column on the cross shaft is inserted into the square plug hole on the shaft rod, and then the side fixing bolts and the long screw are screwed on, and finally the cross shaft is assembled together to complete the replacement of the cross shaft. The utility model has a novel structure and an ingenious design, and is convenient for partial replacement of the worn cross shaft, and does not need to be replaced as a whole. The replacement cost is low and it is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-axis structure of the utility model;

[0017] Figure 3 It is a side view of the cross shaft of the utility model;

[0018] Figure 4 It is a side view of the shaft rod of the utility model;

[0019] Numbers in the figure: 1, shaft; 2, cross shaft; 3, input shaft; 4, output shaft; 5, connecting flange; 6, replacement component; 61, square column; 62, square socket; 63, side fixing bolt; 64, side threaded hole; 65, long screw; 66, first middle threaded hole; 67, second middle threaded hole. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 The specific implementation modes of the present utility model are further described in detail.

[0021] Embodiment 1, by Figure 1-4 The utility model provides a double-head positioning cross-axis universal coupling, comprising a shaft rod 1 arranged in the middle, an input shaft 3 installed at one end of the shaft rod 1 through a cross shaft 2, and an output shaft 4 installed at the other end of the shaft rod 1 through the cross shaft 2, and also comprising a connecting flange 5 and a replacement component 6, the cross shaft 2 is connected to the shaft rod 1 through the replacement component 6;

[0022] The replacement component 6 includes a square column 61, a square socket 62, a side fixing bolt 63, a side threaded hole 64, a long screw 65, a first middle threaded hole 66 and a second middle threaded hole 67. The square column 61 is arranged in the middle of one side of the cross shaft 2, and square sockets 62 are opened in the middle of both ends of the shaft 1. The square column 61 is inserted into the square socket 62, and the square column 61 is connected and fixed to the shaft 1 by side fixing bolts 63 on all sides. Side threaded holes 64 are opened at the positions of the square column 61 and the shaft 1 corresponding to the side fixing bolts 63, and a long screw 65 is screwed into the middle of the square column 61.

[0023] Embodiment 2

[0024] The input shaft 3 and the output shaft 4 in the first embodiment are inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a connecting flange 5 is provided at one end of the input shaft 3 and the output shaft 4, so that the input shaft 3 and the output shaft 4 can be connected to an external device through the connecting flange 5.

[0025] Embodiment 3

[0026] In the first embodiment, the long screw 65 is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a first middle threaded hole 66 is provided at the position of the cross shaft 2 corresponding to the long screw 65 to facilitate the installation and use of the long screw 65.

[0027] Embodiment 4

[0028] In the first embodiment, the long screw 65 is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a second middle threaded hole 67 is provided at the position of the shaft rod 1 corresponding to the long screw rod 65 to facilitate the installation and use of the long screw rod 65.

[0029] Embodiment 5

[0030] In the first embodiment, the side fixing bolt 63 and the side threaded hole 64 are not easy to match. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the number of the side fixing bolts 63 and the side threaded holes 64 are both four, and the positions correspond one to one, which facilitates the coordinated use of the side fixing bolts 63 and the side threaded holes 64.

[0031] Embodiment 6

[0032] The square plug 61 in the first embodiment is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the first middle threaded hole 66 provided on the square plug post 61 corresponds to the second middle threaded hole 67 provided on the shaft rod 1, so as to facilitate the fixation of the square plug post 61.

[0033] Working principle: When the utility model is used, the input shaft 3 and the output shaft 4 are connected to the external equipment through the connecting flange 5. When in use, the external input power is input through the input shaft 3 and output to the power receiving device through the output shaft 4. When the cross shaft 2 is worn and needs to be replaced, the cross shaft 2 is disassembled (existing technology), and the side fixing bolts 63 and the long screw 65 are unscrewed. After the side fixing bolts 63 and the long screw 65 are unscrewed, the cross shaft 2 can be removed from the shaft 1 and replaced with a new cross shaft 2. The square plug 61 on the cross shaft 2 is inserted into the square plug hole 62 on the shaft 1, and then the side fixing bolts 63 and the long screw 65 are screwed on. Finally, the cross shaft 2 is assembled together to complete the replacement of the cross shaft 2.

[0034] Beneficial effects: The utility model has a novel structure and an ingenious design, and is convenient for partial replacement of the worn cross shaft 2 without the need for overall replacement, which has a low replacement cost and is convenient for use.

[0035] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-end positioning cross-axis universal coupling, comprising a shaft (1) arranged in the middle, an input shaft (3) mounted at one end of the shaft (1) through a cross shaft (2), and an output shaft (4) mounted at the other end of the shaft (1) through the cross shaft (2), characterized in that: It also includes a connecting flange (5) and a replacement assembly (6), wherein the cross shaft (2) is connected to the shaft rod (1) via the replacement assembly (6); The replacement component (6) comprises a square plug (61), a square socket (62), a side fixing bolt (63), a side threaded hole (64), a long screw (65), a first middle threaded hole (66) and a second middle threaded hole (67); the square plug (61) is arranged in the middle of one side of the cross shaft (2); the middle of both ends of the shaft (1) are provided with square plugs (62); the square plug (61) is inserted into the square socket (62); the four sides of the square plug (61) are connected and fixed to the shaft (1) by side fixing bolts (63); the square plug (61) and the shaft (1) are provided with side threaded holes (64) at positions corresponding to the side fixing bolts (63); and the middle of the square plug (61) is screwed with a long screw (65).

2. A double-positioned cross-axis universal coupling as claimed in claim 1, characterized in that: One end of the input shaft (3) and the output shaft (4) are both provided with a connecting flange (5).

3. A double-positioned cross-axis universal coupling as claimed in claim 1, characterized in that: The cross shaft (2) is provided with a first middle threaded hole (66) at a position corresponding to the long screw rod (65).

4. A double-positioned cross-axis universal coupling as claimed in claim 1, characterized in that: The shaft rod (1) is provided with a second middle threaded hole (67) at a position corresponding to the long screw rod (65).

5. A double-positioned cross-axis universal coupling as claimed in claim 1, characterized in that: The number of the side fixing bolts (63) and the number of the side threaded holes (64) are both four, and the positions correspond one to one.

6. A double-positioned cross-axis universal coupling as claimed in claim 1, characterized in that: The first middle threaded hole (66) provided on the square plug post (61) corresponds to the second middle threaded hole (67) provided on the shaft rod (1).

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