Anti-falling transmission shaft retainer

Abstract

The utility model relates to the field of transmission shaft retainers, and discloses an anti-falling transmission shaft retainer which comprises a transmission shaft, the outer wall of the transmission shaft is rotatably connected with the transmission shaft retainer, the outer wall of the transmission shaft retainer is provided with a locking mechanism and a self-locking mechanism, and the locking mechanism comprises a first threaded connection sleeve. A limiting lifting groove is formed in one side wall of the threaded connecting sleeve, a lifting sliding block is slidably connected to the inner wall of the limiting lifting groove, a connecting rod is fixedly connected to the side wall of the lifting sliding block, an L-shaped locking clamping block is fixedly connected to the end, away from the lifting sliding block, of the connecting rod, and a supporting sleeve is connected to the outer wall of the first threaded connecting sleeve. The inner wall of the supporting sleeve is rotationally connected with a rotating ring. According to the utility model, the locking mechanism and the L-shaped locking clamping blocks are arranged, so that the transmission shaft retainer can be clamped in the circumferential direction, the axial movement of the transmission shaft retainer is limited, the transmission shaft is prevented from falling off, radial deviation can be effectively restrained, and transmission faults caused by deviation are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transmission shaft retainer, especially to a transmission shaft retainer of anti -drop. BACKGROUND

[0002] The transmission shaft retainer is a protective component installed outside the transmission shaft, usually in a ring or sleeve structure.

[0003] In the prior art, buckle and threaded fastening are two common fixing methods for transmission shaft retainers. When using a buckle, the appropriate buckle, such as a metal buckle, is selected according to the specifications of the transmission shaft retainer, and the disassembly tool is prepared. Check the state of the buckle and clean the installation site at the same time. Align the buckle protrusion with the card slot and press lightly during installation, then use a tool or manual force until it is carded into place, pay attention to the control of force and direction. After installation, check the firmness by pulling and shaking the retainer. If it is loose, it needs to be reinstalled. In the threaded fastening method, the appropriate tools such as screws, wrenches, and screwdrivers are selected to ensure that the connection surface is clean and flat. When installing the split retainer, first put the two halves on both sides of the transmission shaft and align them, then screw the screws into the screw holes, and use a torque wrench to tighten the screws according to the specified value. If necessary, apply screw glue or install a lock washer to enhance the fastening effect and stability.

[0004] In the existing application of transmission shaft retainers, traditional fixing methods such as threaded fastening and buckling are often used. Threaded connection is easy to loosen in a vibrating environment, and the buckle structure is difficult to provide continuous and stable clamping force, which makes it difficult to achieve reliable circumferential and axial fixation of the transmission shaft retainer. When the transmission shaft is running, the retainer may shift radially or axially, which not only causes abnormal wear of the transmission components, power transmission failure and other faults, but also poses a safety hazard of the transmission shaft falling off, seriously affecting the stability and safety of the equipment operation. Therefore, a transmission shaft retainer is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a transmission shaft retainer of anti -drop, which aims at solving the problem that the buckle is easy to loosen in the prior art, which makes it difficult to achieve stable circumferential and axial constraint of the transmission shaft retainer.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: A kind of anti-falling transmission shaft retainer, including transmission shaft, the transmission shaft outer wall is rotatably connected with transmission shaft retainer, the transmission shaft retainer outer wall is provided with locking mechanism and self-locking mechanism, the locking mechanism includes threaded connection sleeve one, the threaded connection sleeve one side wall is opened with limit lifting groove, the limit lifting groove inner wall is slidably connected with lifting slider, the lifting slider side wall is fixedly connected with connecting rod, the connecting rod is fixedly connected with L type locking clamp block at the end away from lifting slider, the threaded connection sleeve one outer wall is connected with support sleeve, the support sleeve inner wall is rotatably connected with swivel, the swivel outer wall is opened with arc extrusion hole.

[0007] As further description of the above technical solution:

[0008] The locking mechanism further includes support plate, and the support plate inner wall is fixedly connected with the transmission shaft retainer outer wall.

[0009] As further description of the above technical solution:

[0010] The locking mechanism further includes threaded connection sleeve two, the threaded connection sleeve two side wall is fixedly connected with the support plate side wall, and the threaded connection sleeve two outer wall is threadedly connected with the threaded connection sleeve one inner wall.

[0011] As further description of the above technical solution:

[0012] The locking mechanism further includes positioning hole, and the positioning hole is opened in the support plate outer wall.

[0013] As further description of the above technical solution:

[0014] The self-locking mechanism includes connecting frame, and the connecting frame outer wall is fixedly connected with the support sleeve outer wall.

[0015] As further description of the above technical solution:

[0016] The connecting frame inner wall is rotatably connected with worm.

[0017] As further description of the above technical solution:

[0018] One end of the worm is fixedly connected with knob.

[0019] As further description of the above technical solution:

[0020] The self-locking mechanism further includes worm gear ring, the worm gear ring inner wall is fixedly connected with the swivel outer wall, and the worm gear ring outer wall is meshingly connected with the worm outer wall.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model discloses a locking mechanism is set up, and L type locking clamping block can be clamped from the circumference to transmission shaft retainer, not only limit its axial movement, prevent transmission shaft from falling off, can effectively restrict radial deviation, avoid the transmission failure caused by deviation.

[0023] 2. The utility model discloses a self-locking mechanism is set up, and based on the characteristic that the lead angle of worm and worm ring is less than equivalent friction angle realizes mechanical self-locking, need not additional energy just can keep the clamping force, and the L type locking clamping block is loosened because of the equipment vibration or reverse force, ensure that the locking state is stable. DRAWINGS

[0024] Figure 1 It is the main view structural schematic drawing of the utility model discloses a kind of anti-falling transmission shaft retainer;

[0025] Figure 2 It is the structure schematic drawing of the utility model discloses a kind of anti-falling transmission shaft retainer's threaded connection sleeve two;

[0026] Figure 3 It is the local structure schematic drawing of the utility model discloses a kind of locking mechanism of anti-falling transmission shaft retainer;

[0027] Figure 4 It is the structure schematic drawing of the utility model discloses a kind of anti-falling transmission shaft retainer's threaded connection sleeve one;

[0028] Figure 5 It is the structure schematic drawing of the utility model discloses a kind of anti-falling transmission shaft retainer's support sleeve;

[0029] Figure 6 It is the utility model discloses a kind of anti-falling transmission shaft retainer Figure 3 Enlarged view of structure in A place.

[0030] Legend:

[0031] 1, transmission shaft;2, transmission shaft retainer;3, locking mechanism;311, threaded connection sleeve one;312, limit lifting groove;313, lifting slider;314, connecting rod;315, L type locking clamping block;317, support sleeve;318, swivel ring;319, arc extrusion hole;320, support plate;321, threaded connection sleeve two;322, positioning hole;4, self-locking mechanism;411, connecting frame;412, worm;413, knob;414, worm ring. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] With reference to Figures 4-6 The utility model provides an embodiment: a prevent falling transmission shaft retainer, transmission shaft 1, transmission shaft 1 outer wall rotationally connected with transmission shaft retainer 2, transmission shaft retainer 2 outer wall is provided with locking mechanism 3 and self -locking mechanism 4, locking mechanism 3 includes threaded connection sleeve no. 311, threaded connection sleeve no. 311 is used for with threaded connection sleeve no. 321 threaded cooperation, realizes the axial movement of support sleeve 317, with transmission shaft retainer 2 is primarily positioned, threaded connection sleeve no. 311 side wall sets up limit lifting groove 312, and limit lifting groove 312 is sliding track for lifting slide 313, and the movement direction is restricted, and the stable lifting of L type locking clamping block 315 is ensured, and lifting slide 313 is slidably connected in limit lifting groove 312, and lifting slide 313 slides in limit lifting groove 312, drives connecting rod 314 and L type locking clamping block 315 to move, and connecting rod 314 is fixedly connected with the side wall of lifting slide 313, and connecting rod 314 transmits the movement of lifting slide 313, drives L type locking clamping block 315 to realize the clamping or loosening of transmission shaft retainer 2, and connecting rod 314 is fixedly connected with L type locking clamping block 315 away from lifting slide 313 one end, and L type locking clamping block 315 is used for clamping transmission shaft retainer 2, prevents its from deviating, and threaded connection sleeve no. 311 outer wall is connected with support sleeve 317, and support sleeve 317 is driven under threaded connection sleeve no. 321, and is provided with preliminary constraint, and support sleeve 317 inner wall rotationally connected with swivel 318, and swivel 318 is rotated under the driving of worm wheel ring 414, and is pushed connecting rod 314 through arc extrusion hole 319, and swivel 318 outer wall sets up arc extrusion hole 319, and arc extrusion hole 319 cooperates with connecting rod 314, and the rotary motion of swivel 318 is converted into the linear motion of connecting rod 314, and drives L type locking clamping block 315 to clamp.

[0034] With reference to Figures 1-3The locking mechanism 3 also includes a support plate 320, which is used to fix the threaded connecting sleeve 321 and is connected to the drive shaft guard ring 2 to enhance the overall structural stability. The inner wall of the support plate 320 is fixedly connected to the outer wall of the drive shaft guard ring 2. The locking mechanism 3 also includes a threaded connecting sleeve 321, which drives the support sleeve 317 to move by threading with the threaded connecting sleeve 311, thereby achieving the initial positioning of the drive shaft guard ring 2. The side wall of the threaded connecting sleeve 321 is connected to the side wall of the support plate 320. The fixed connection is achieved by threading the outer wall of threaded connecting sleeve 321 to the inner wall of threaded connecting sleeve 311. The locking mechanism 3 also includes a positioning hole 322, which is used to install the fixing component and further fix the support plate 320 and the drive shaft guard ring 2 to enhance the structural reliability. The positioning hole 322 is opened on the outer wall of the support plate 320. The self-locking mechanism 4 includes a connecting frame 411, which provides installation space for the worm 412 and the worm wheel ring 414. The outer wall of the connecting frame 411 is fixedly connected to the outer wall of the support sleeve 317.

[0035] Reference Figure 5 , Figure 6 The self-locking mechanism 4 also includes a worm gear 412, which transmits the rotational motion of the knob 413 to the rotating ring 318 through meshing with the worm wheel ring 414. Both ends of the worm gear 412 are rotatably connected to the inner wall of the connecting frame 411. The self-locking mechanism 4 also includes a knob 413, which allows the operator to manually drive the worm gear 412 to rotate, thereby locking the transmission shaft guard ring 2. The outer wall of the knob 413 is fixedly connected to one end of the worm gear 412. The self-locking mechanism 4 also includes a worm wheel ring 414, which meshes with the worm gear 412. Utilizing its self-locking characteristic, it prevents the L-shaped locking block 315 from loosening after clamping. The inner wall of the worm wheel ring 414 is fixedly connected to the outer wall of the rotating ring 318, and the outer wall of the worm wheel ring 414 meshes with the outer wall of the worm gear 412.

[0036] Working principle: when the transmission shaft retainer 2 needs to be locked and positioned, the threaded connecting sleeve two 321 is screwed on the outer wall of the threaded connecting sleeve one 311, so that the threaded connecting sleeve two 321 drives the support sleeve 317 to be sleeved on the outer wall of the transmission shaft retainer 2, so as to position and lock the transmission shaft retainer 2 subsequently, by rotating the knob 413, the knob 413 drives the fixedly connected worm 412 to rotate in the inner wall of the connecting frame 411, so that the worm 412 drives the outer wall meshing connected worm gear ring 414 to rotate, and further drives the rotating ring 318 fixedly connected with the inner wall of the worm gear ring 414 to rotate, the rotating ring 318 rotating will drive the arc extrusion hole 319 to extrude the connecting rod 314, so that the connecting rod 314 slides in the inner wall of the arc extrusion hole 319, the connecting rod 314 drives the lifting sliding block 313 to slide in the inner wall of the limiting lifting groove 312, so as to drive the L-shaped locking block 315 to lock and position the transmission shaft retainer 2, so as to avoid the deviation of the transmission shaft retainer 2, and further cause the transmission shaft 1 to fall off or deviate from the original position due to the deviation, and the circumferential clamping can limit the bidirectional movement of the transmission shaft retainer 2, prevent the transmission shaft 1 from falling off, and block the fault chain reaction caused by deviation.

[0037] Since the lead angle between the worm gear ring 414 and the worm 412 is less than the equivalent friction angle between the meshing teeth, under this condition, the direction self-locking can be realized, and the self-locking characteristic is used to keep the limiting locking, so that the L-shaped locking block 315 will not be loosened in the opposite direction due to external force after clamping.

[0038] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A drive shaft guard that prevents detachment, comprising a drive shaft (1), characterized in that: The outer wall of the drive shaft (1) is rotatably connected to a drive shaft guard (2), and the outer wall of the drive shaft guard (2) is provided with a locking mechanism (3) and a self-locking mechanism (4). The locking mechanism (3) includes a threaded connecting sleeve (311), a limiting lifting groove (312) is provided on the side wall of the threaded connecting sleeve (311), a lifting slider (313) is slidably connected to the inner wall of the limiting lifting groove (312), a connecting rod (314) is fixedly connected to the side wall of the lifting slider (313), an L-shaped locking clamp (315) is fixedly connected to the end of the connecting rod (314) away from the lifting slider (313), a support sleeve (317) is connected to the outer wall of the threaded connecting sleeve (311), a rotating ring (318) is rotatably connected to the inner wall of the support sleeve (317), and an arc-shaped extrusion hole (319) is provided on the outer wall of the rotating ring (318).

2. The anti-detachment drive shaft guard ring according to claim 1, characterized in that: The locking mechanism (3) also includes a support plate (320), the inner wall of which is fixedly connected to the outer wall of the drive shaft guard (2).

3. The anti-detachment drive shaft guard ring according to claim 1, characterized in that: The locking mechanism (3) further includes a threaded connecting sleeve two (321), the side wall of the threaded connecting sleeve two (321) is fixedly connected to the side wall of the support plate (320), and the outer wall of the threaded connecting sleeve two (321) is threadedly connected to the inner wall of the threaded connecting sleeve one (311).

4. The anti-detachment drive shaft guard ring according to claim 1, characterized in that: The locking mechanism (3) also includes a positioning hole (322), which is located on the outer wall of the support plate (320).

5. The anti-detachment drive shaft guard ring according to claim 1, characterized in that: The self-locking mechanism (4) includes a connecting frame (411), the outer wall of which is fixedly connected to the outer wall of the support sleeve (317).

6. The drive shaft guard ring for preventing detachment according to claim 5, characterized in that: The inner wall of the connecting frame (411) is rotatably connected to a worm gear (412).

7. A drive shaft guard ring for preventing detachment according to claim 6, characterized in that: A knob (413) is fixedly connected to one end of the worm gear (412).

8. The anti-detachment drive shaft guard ring according to claim 1, characterized in that: The self-locking mechanism (4) also includes a worm gear ring (414), the inner wall of which is fixedly connected to the outer wall of the rotating ring (318), and the outer wall of which is meshed with the outer wall of the worm (412).

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