Mechanical transmission shaft device with protection function

Abstract

The utility model discloses a mechanical transmission shaft device with a protection function. The mechanical transmission shaft device comprises a transmission shaft assembly. The movable assembly comprises a telescopic spring, a check ring, a fixed circular ring, a protective pipe, a clamping groove, a fixed groove and a fixed block; the telescopic spring is fixedly connected to the inner portion of the outer end of the chassis, the check ring is fixedly connected to the outer end of the telescopic spring, the fixing ring is placed on the outer side of the check ring, the protection pipe is fixedly connected to the outer side of the fixing ring, the clamping groove is formed in the periphery of the fixing ring, and the fixing groove is formed in the outer side of the periphery of the fixing ring. A fixing circular ring is moved to be attached to the outer side of a check ring through a clamping groove, then the fixing circular ring is moved inwards and rotated, so that the position of a fixing groove corresponds to the position of a fixing block, the check ring moves outwards under the action of a telescopic spring, and the fixing circular ring is fixed to the position of the inner side of the fixing block and the position of the outer side of the check ring; and therefore, the protection tube is fixed at the external position of the shaft tube, and the shaft tube is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission shafts, in particular to a mechanical transmission shaft device with a protective function. Background Art

[0002] A mechanical drive shaft is a device used to transmit power and torque, and is widely used in automobiles and other mechanical equipment. Mainly installed in engines, it enables efficient energy transfer between different rotational planes.

[0003] Existing mechanical transmission shafts are usually directly connected to external equipment. When the mechanical transmission shaft is hit, it will bend, which will cause transmission deviation during transmission. In addition, since the mechanical transmission shaft is directly exposed to the outside world, it will come into contact with dust and cause corrosion and non-lubrication. Therefore, it is necessary to provide a device that can protect the mechanical transmission shaft to protect the mechanical transmission shaft. Utility Model Content

[0004] The purpose of the present utility model is to provide a mechanical transmission shaft device with a protective function, so as to solve the problems raised in the above background technology that the existing mechanical transmission shaft is usually directly connected to the external equipment. When the mechanical transmission shaft is hit, the mechanical transmission shaft will bend, which will cause the mechanical transmission shaft to cause transmission deviation during transmission. In addition, the mechanical transmission shaft is directly exposed to the outside world and will come into contact with dust, etc., causing corrosion and non-lubrication.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a mechanical transmission shaft device with a protective function, comprising:

[0007] a propeller shaft assembly, the propeller shaft assembly including a chassis;

[0008] A movable assembly, comprising a telescopic spring, a retaining ring, a fixing ring, a protective tube, a clamping slot, a fixing slot and a fixing block;

[0009] The telescopic spring is fixedly connected to the inner position of the outer end of the chassis, the retaining ring is fixedly connected to the outer end of the telescopic spring, the fixed ring is placed at the outer position of the retaining ring, the protective tube is fixedly connected to the outer position of the fixed ring, the card slot is opened around the fixed ring, the fixing slot is opened around the outer position of the fixed ring, and the fixed block is fixedly connected to the outer position of the chassis.

[0010] Furthermore, the transmission shaft assembly further includes a shaft tube;

[0011] The shaft tube is fixedly connected to the central position inside the chassis.

[0012] Furthermore, the clamping slot and the fixing slot are opened relative to the fixing block, and the clamping slot and the fixing slot are staggered with each other.

[0013] Furthermore, the retaining ring is located inside the fixing block, and the protective tube is located outside the shaft tube.

[0014] Furthermore, it also includes an extension assembly, which includes an extension tube, a fixing hole, a fixing bolt and a hollow groove;

[0015] The extension tube is placed inside the protective tube, the fixing holes are opened around the outer surface of the extension tube, the fixing bolts are threadedly connected inside the fixing holes, and the hollow grooves are opened around the outer surface of the protective tube.

[0016] Furthermore, the fixing bolt extends outward through the hollow groove, and the inner surface of the fixing hole has a threaded structure opened relative to the fixing bolt.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The utility model provides a movable component, moves the fixed ring through the slot to fit the outer side of the retaining ring, then moves the fixed ring inward and rotates the fixed ring to make the fixed slot and the fixed block position correspond, so that the retaining ring moves outward under the action of the telescopic spring, so that the fixed ring is fixed to the inner side of the fixed block and the outer side of the retaining ring, thereby fixing the protective tube to the outer position of the shaft tube, so as to protect the shaft tube.

[0019] 2. Based on the first beneficial effect, by setting up an extension assembly, when the shaft tube and the external driven shaft are connected, the extension tube can be installed to fix the extension tube on the outside of the protective tube, so that the extension tube can protect the driven shaft outside the shaft tube, and the position of the fixing bolt inside the hollow groove can be changed so that the length of the extension tube inside the protective tube can be fine-tuned to adapt to driven shafts of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is the main view of the utility model;

[0022] Figure 2 This is a structural diagram of the transmission shaft assembly of the utility model;

[0023] Figure 3This is a structural diagram of the active components of the utility model;

[0024] Figure 4 This is a structural diagram of the extended component of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 11. Chassis; 12. Axle tube; 21. Telescopic spring; 22. Retaining ring; 23. Fixing ring; 24. Protective tube; 25. Slot; 26. Fixing slot; 27. Fixing block; 31. Extension tube; 32. Fixing hole; 33. Fixing bolt; 34. Hollow slot. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0031] See also Figure 1-3 As shown, this embodiment is a mechanical transmission shaft device with a protective function, comprising:

[0032] A transmission shaft assembly, the transmission shaft assembly includes a chassis 11;

[0033] The movable assembly includes a telescopic spring 21, a retaining ring 22, a fixing ring 23, a protective tube 24, a clamping groove 25, a fixing groove 26 and a fixing block 27;

[0034] The telescopic spring 21 is fixedly connected to the inner position of the outer end of the chassis 11, the retaining ring 22 is fixedly connected to the outer end of the telescopic spring 21, the fixed ring 23 is placed outside the retaining ring 22, the protective tube 24 is fixedly connected to the outer position of the fixed ring 23, the slots 25 are opened around the fixed ring 23, the fixing slots 26 are opened around the outer position of the fixed ring 23, and the fixing blocks 27 are fixedly connected to the outer periphery of the chassis 11;

[0035] The telescopic spring 21 is used to reset the retaining ring 22, the retaining ring 22 is used to support the fixed ring 23, the fixed ring 23 is used to support the protective tube 24, the protective tube 24 is used to protect the shaft tube 12, the slot 25 is used to pass through the fixed block 27, the fixed slot 26 is used to place the fixed block 27, and the fixed block 27 is used to limit the fixed ring 23;

[0036] The transmission shaft assembly also includes a shaft tube 12;

[0037] The shaft tube 12 is fixedly connected to the central position inside the chassis 11;

[0038] The chassis 11 is used to support the shaft tube 12, and the shaft tube 12 is used to connect to the external driven shaft;

[0039] The card slot 25 and the fixing slot 26 are opened relative to the fixing block 27, and the card slot 25 and the fixing slot 26 are staggered with each other;

[0040] When the slot 25 and the fixing block 27 are positioned correspondingly, the fixing ring 23 can move outside the fixing block 27. When the fixing slot 26 and the fixing block 27 are positioned correspondingly, the fixing ring 23 cannot move outward due to the obstruction of the fixing block 27.

[0041] The retaining ring 22 is located inside the fixing block 27, and the protective tube 24 is located outside the shaft tube 12;

[0042] By moving the fixed ring 23 inward, the fixed ring 23 can drive the retaining ring 22 to move inward, and the retaining ring 22 drives the telescopic spring 21 to be compressed;

[0043] Working principle: When it is necessary to protect the shaft tube 12, the fixing ring 23 is rotated to make the slot 25 and the fixing block 27 correspond to each other, and the fixing ring 23 is moved through the fixing block 27 to fit the outer side of the retaining ring 22, and the inward force is continued to be applied to the fixing ring 23, so that the fixing ring 23 and the retaining ring 22 move inward, and the inward movement of the retaining ring 22 drives the telescopic spring 21 to be compressed. Then the fixing ring 23 is rotated again, so that the fixing ring 23 drives the fixing groove 26 to rotate to the position corresponding to the fixing block 27, and the force applied to the fixing ring 23 is stopped. Under the elastic force of the telescopic spring 21, the retaining ring 22 moves outward and drives the fixing ring 23 to move outward. The outer end of the fixing ring 23 is blocked by the fixing block 27, so that the fixing ring 23 is fixed inside the chassis 11, and the fixing ring 23 drives the protective tube 24 to be fixed to the outside of the shaft tube 12, so as to achieve protection of the shaft tube 12.

[0044] See also Figure 4 As shown, this embodiment is based on the above embodiment and also includes:

[0045] Extension assembly, the extension assembly includes an extension tube 31, a fixing hole 32, a fixing bolt 33 and a hollow groove 34;

[0046] The extension tube 31 is placed inside the protective tube 24, the fixing holes 32 are formed around the outer surface of the extension tube 31, the fixing bolts 33 are threadedly connected to the fixing holes 32, and the hollow grooves 34 are formed around the outer surface of the protective tube 24;

[0047] The extension tube 31 is used to protect the driven shaft outside the shaft tube 12, the fixing hole 32 is used to fix the fixing bolt 33, the fixing bolt 33 is used to fix the extension tube 31 inside the protection tube 24, and the hollow groove 34 is used to place the fixing bolt 33;

[0048] The fixing bolt 33 extends outward through the hollow groove 34, and the inner surface of the fixing hole 32 has a threaded structure corresponding to the fixing bolt 33;

[0049] The fixing bolt 33 can be fixed inside the fixing hole 32 through a threaded structure;

[0050] Working principle: When it is necessary to protect the driven shaft outside the shaft tube 12, the extension tube 31 is placed inside the protective tube 24, and the fixing bolts 33 are fixed around the extension tube 31 through the fixing holes 32. At the same time, the fixing bolts 33 are fixed on the outer surface of the protective tube 24 to fix the extension tube 31. When it is necessary to fine-tune the length of the extension tube 31, the fixing bolts 33 are moved to the internal position of the hollow groove 34, so that the fixing bolts 33 drive the extension tube 31 to move inside the protective tube 24, thereby fine-tuning the length of the extension tube 31 extending outside.

[0051] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mechanical transmission shaft device with a protective function, characterized in that: include: A transmission shaft assembly, the transmission shaft assembly comprising a chassis (11); A movable assembly, the movable assembly comprising a telescopic spring (21), a retaining ring (22), a fixing ring (23), a protective tube (24), a clamping groove (25), a fixing groove (26) and a fixing block (27); The telescopic spring (21) is fixedly connected to an inner position of the outer end of the chassis (11), the retaining ring (22) is fixedly connected to an outer position of the telescopic spring (21), the fixed ring (23) is placed at an outer position of the retaining ring (22), the protective tube (24) is fixedly connected to an outer position of the fixed ring (23), the slot (25) is opened at a position around the fixed ring (23), the fixing slot (26) is opened at a position around the outer position of the fixed ring (23), and the fixing block (27) is fixedly connected to a position around the outer side of the chassis (11).

2. A mechanical transmission shaft device with protective function according to claim 1, characterized in that: The transmission shaft assembly further includes a shaft tube (12); The shaft tube (12) is fixedly connected to a central position inside the chassis (11).

3. A mechanical transmission shaft device with protective function according to claim 1, characterized in that: The clamping slot (25) and the fixing slot (26) are opened relative to the fixing block (27), and the clamping slot (25) and the fixing slot (26) are staggered with each other.

4. A mechanical transmission shaft device with protective function according to claim 1, characterized in that: The retaining ring (22) is located inside the fixing block (27), and the protective tube (24) is located outside the shaft tube (12).

5. The mechanical transmission shaft device with protective function according to claim 1, characterized in that: Also included is an extension assembly, the extension assembly including an extension tube (31), a fixing hole (32), a fixing bolt (33) and a hollow groove (34); The extension tube (31) is placed inside the protective tube (24), the fixing holes (32) are opened around the outer surface of the extension tube (31), the fixing bolts (33) are threadedly connected to the inside of the fixing holes (32), and the hollow grooves (34) are opened around the outer surface of the protective tube (24).

6. A mechanical transmission shaft device with protective function according to claim 5, characterized in that: The fixing bolt (33) extends outward through the hollow groove (34), and the inner surface of the fixing hole (32) has a threaded structure opened relative to the fixing bolt (33).

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