Transmission shaft protection device

Abstract

The utility model discloses a transmission shaft protection device, and belongs to the technical field of transmission shaft protection. A transmission shaft protection device comprises mounting frames, a shaft body is fixed between the mounting frames, two first protection shells are symmetrically arranged on the outer surface of the shaft body, two second protection shells are further symmetrically arranged on the outer surface of the shaft body, and extension shells are fixed to the side faces, close to the first protection shells, of the second protection shells; the extension shell slides in the protection shell I; through the arrangement of the limiting mechanism, the nut can be limited, the phenomenon that the nut falls off after being vibrated for a long time is prevented, safety is improved, by means of the design, during installation, the stability is guaranteed without screwing a plurality of bolts, disassembly and assembly of the first protective shell, the second protective shell and the extension shell are simplified, and through the arrangement of the auxiliary mechanism, the safety is improved. The limiting mechanism is prevented from being automatically started under the action of external force, and the safety is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shaft protection, in particular to a transmission shaft protection device. Background Art

[0002] In a car or other motor vehicle, the drive shaft is an important component responsible for transmitting the power generated by the engine to the drive wheels of the vehicle. In order to ensure that the drive shaft is not damaged by external objects or debris during driving, especially in harsh road conditions or off-road driving, a drive shaft protection device is usually installed.

[0003] For example, in the Chinese patent with application number 202023068116.9, an engine drive shaft protection device is provided. By setting a secondary extension plate and a reinforcement plate, not only can the protection plate be easily adjusted, but also it is not easy to be misaligned. At the same time, by setting a reinforcement column, a spiral tube and a spring column, not only can the protection plate be strengthened, but it is also not limited by the installation range of the drive shaft, and is highly practical.

[0004] However, when installing this type of protective device, it is necessary to connect multiple spring columns, screws and other components. During use, the drive shaft may be bumpy due to different road conditions, which may cause the protective device to vibrate, causing the screws to loosen after long-term use, thereby posing a risk of falling off and affecting safety. In addition, multiple screws need to be twisted, which is inconvenient during installation.

[0005] Therefore, in order to solve this problem, the utility model provides a transmission shaft protection device. Utility Model Content

[0006] The purpose of the utility model is to solve the problems in the prior art that during use, the transmission shaft is bumped due to different road conditions, which causes the protection device to vibrate, resulting in the loosening of the screw tube after long-term use, thereby posing a risk of falling off, affecting safety, and requiring multiple screw tubes to be screwed, which is inconvenient during installation. A transmission shaft protection device is proposed to solve the problems in the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A transmission shaft protection device comprises a mounting frame, wherein a shaft body is fixed between the mounting frames, two protective shells 1 are symmetrically arranged on the outer surface of the shaft body, and two protective shells 2 are also symmetrically arranged on the outer surface of the shaft body, an extension shell is fixed to a side of the protective shell 2 close to the protective shell 1, and the extension shell slides in the protective shell 1, and studs are fixed to a side of the protective shell 1 and the protective shell 2 close to the mounting frame, the studs are slidably connected to the mounting frame, the outer surfaces of the studs are threadedly connected with nuts, and a limiting mechanism for preventing the nut from rotating autonomously is arranged on the mounting frame, the limiting mechanism comprises limiting teeth fixed to the outer surface of the nut, and the outer surfaces of the limiting teeth are clamped with a clamping strip, and an auxiliary mechanism is arranged on the mounting frame.

[0009] Preferably, the limiting mechanism also includes an installation box fixed on the mounting frame, the clamping strip slides in the inner wall of the installation box, a cross bar is fixed in the installation box, a moving block slides on the outer surface of the cross bar, and one end of the clamping strip away from the limiting tooth is fixedly connected to the moving block.

[0010] Preferably, the limiting mechanism further comprises a spring arranged in the installation box, and two ends of the spring are respectively fixedly connected to the two moving blocks.

[0011] Preferably, the limiting mechanism further comprises a slide groove provided on the top of the installation box, a slider is fixed on the top of the moving block, and the slider slides in the slide groove.

[0012] Preferably, the auxiliary mechanism comprises a fixed rod fixed on the mounting frame, a moving bar is slidably arranged on the outer surface of the fixed rod, a connecting rod is fixed to the side of the moving bar close to the slider, and a magnet is fixed to one end of the connecting rod away from the moving bar.

[0013] Preferably, the auxiliary mechanism further comprises a second magnet fixed on the mounting frame, the first magnet is magnetically attracted to the second magnet, a circular hole is provided in the sliding block, and the connecting rod and the first magnet slide in the circular hole.

[0014] Compared with the prior art, the utility model provides a transmission shaft protection device, which has the following beneficial effects:

[0015] The transmission shaft protection device can limit the nut by setting a limit mechanism, thereby preventing the nut from falling off after being vibrated for a long time, thereby improving safety. This design does not need to tighten multiple bolts to ensure stability during installation, thereby simplifying the disassembly and assembly of protective shell one, protective shell two and extension shell. By setting an auxiliary mechanism, the limit mechanism is prevented from starting autonomously under the action of external force, thereby further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the overall structure of a transmission shaft protection device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the separation structure of the protective shell 1 and the protective shell 2 of the transmission shaft protection device proposed by the utility model;

[0018] Figure 3 This is a schematic side view of the structure of a transmission shaft protection device proposed by the utility model;

[0019] Figure 4 A transmission shaft protection device proposed by the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0020] In the figure: 1. mounting frame; 2. shaft; 3. protective shell 1; 4. protective shell 2; 5. extension shell; 6. stud; 7. nut; 8. limiting mechanism; 81. limiting tooth; 82. clamping strip; 83. mounting box; 84. cross bar; 85. moving block; 86. spring; 87. slide groove; 88. slider; 9. auxiliary mechanism; 91. fixing rod; 92. moving bar; 93. connecting rod; 94. magnet 1; 95. magnet 2; 96. round hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Embodiment 1

[0024] Reference Figure 1-Figure 4A transmission shaft protection device comprises a mounting frame 1, a shaft body 2 is fixed between the mounting frames 1, two protective shells 1 are symmetrically arranged on the outer surface of the shaft body 2, two protective shells 2 4 are also symmetrically arranged on the outer surface of the shaft body 2, an extension shell 5 is fixed to the side of the protective shell 2 4 close to the protective shell 1 3, the extension shell 5 slides in the protective shell 1 3, and studs 6 are fixed to the side of the protective shell 1 3 and the protective shell 2 4 close to the mounting frame 1, the studs 6 are slidably connected to the mounting frame 1, and the outer surface of the studs 6 is threadedly connected with a nut 7, and a limiting mechanism 8 for preventing the nut 7 from rotating autonomously is arranged on the mounting frame 1, the limiting mechanism 8 comprises a limiting tooth 81 fixed to the outer surface of the nut 7, and the outer surface of the limiting tooth 81 is clamped with a clamping strip 82, and an auxiliary mechanism 9 is arranged on the mounting frame 1.

[0025] Reference Figure 1-Figure 4 The limiting mechanism 8 also includes a mounting box 83 fixed on the mounting frame 1, the clamping strip 82 slides in the inner wall of the mounting box 83, a cross bar 84 is fixed in the mounting box 83, a moving block 85 slides on the outer surface of the cross bar 84, and one end of the clamping strip 82 away from the limiting tooth 81 is fixedly connected to the moving block 85.

[0026] Reference Figure 1-Figure 4 The limiting mechanism 8 also includes a spring 86 disposed in the mounting box 83 , and both ends of the spring 86 are fixedly connected to the two moving blocks 85 .

[0027] Reference Figure 1-Figure 4 The limiting mechanism 8 also includes a slide groove 87 opened on the top of the installation box 83, and a slider 88 is fixed on the top of the moving block 85, and the slider 88 slides in the slide groove 87.

[0028] This technical solution is adopted considering that the nut 7 may become loose after being subjected to vibration for a long time, causing the nut 7 to fall off, thereby causing the protective shell 1 3, the protective shell 2 4 and the extension shell 5 to separate from the outer surface of the shaft body 2, affecting safety.

[0029] Specifically, by setting the protective shell 1 3 and the protective shell 2 4, the shaft body 2 can be protected to prevent the shaft body 2 from being damaged by external objects or debris during driving. The extension shell 5 can slide in the protective shell 1 3, and the distance between the protective shell 1 3 and the protective shell 2 4 can be adjusted to adapt to shaft bodies 2 of different lengths.

[0030] During installation, the protective shell 1 3 and the protective shell 2 4 are attached to the outer surface of the shaft body 2. According to the length of the shaft body 2, the protective shell 1 3 and the protective shell 2 4 are extended in the direction of the two mounting frames 1, and the extension shell 5 is slid in the protective shell 1 3 until the stud 6 passes through the mounting frame 1, and the nut 7 is screwed on the outer surface of the stud 6 so that the nut 7 locks the stud 6, thereby installing the protective shell 1 3 and the protective shell 2 4. Before screwing the nut 7, the slider 88 must be slid toward the middle in the slide groove 87, and the slider 88 drives the moving block 85 to slide together on the outer surface of the cross bar 84, so as to elastically The spring 86 is squeezed to move the clamping strip 82 toward the middle. The staff member twists the nut 7 to move the nut 7 and the limiting tooth 81 forward on the outer surface of the stud 6, and moves the limiting tooth 81 to a position corresponding to the clamping strip 82. At this time, the slider 88 can be loosened and the elastic force of the spring 86 can be used to reset the moving block 85 and the clamping strip 82, so that the clamping strip 82 is clamped with one of the limiting teeth 81, and the limiting teeth 81 and the nut 7 are limited, so that the nut 7 will not rotate due to vibration, and the nut 7 can be prevented from falling off after being vibrated for a long time, thereby improving safety.

[0031] Embodiment 2

[0032] Reference Figure 1-Figure 4 A transmission shaft protection device comprises a mounting frame 1, a shaft body 2 is fixed between the mounting frames 1, two protective shells 1 are symmetrically arranged on the outer surface of the shaft body 2, two protective shells 2 4 are also symmetrically arranged on the outer surface of the shaft body 2, an extension shell 5 is fixed to the side of the protective shell 2 4 close to the protective shell 1 3, the extension shell 5 slides in the protective shell 1 3, and studs 6 are fixed to the side of the protective shell 1 3 and the protective shell 2 4 close to the mounting frame 1, the studs 6 are slidably connected to the mounting frame 1, and the outer surface of the studs 6 is threadedly connected with a nut 7, and a limiting mechanism 8 for preventing the nut 7 from rotating autonomously is arranged on the mounting frame 1, the limiting mechanism 8 comprises a limiting tooth 81 fixed to the outer surface of the nut 7, and the outer surface of the limiting tooth 81 is clamped with a clamping strip 82, and an auxiliary mechanism 9 is arranged on the mounting frame 1.

[0033] Reference Figure 1-Figure 4 The auxiliary mechanism 9 includes a fixed rod 91 fixed on the mounting frame 1, a moving bar 92 is slidably arranged on the outer surface of the fixed rod 91, a connecting rod 93 is fixed to the side of the moving bar 92 close to the slider 88, and a magnet 94 is fixed to the end of the connecting rod 93 away from the moving bar 92.

[0034] Reference Figure 1-Figure 4 The auxiliary mechanism 9 also includes a second magnet 95 fixed on the mounting frame 1 , the first magnet 94 and the second magnet 95 are magnetically attracted to each other, a circular hole 96 is opened in the slider 88 , and the connecting rod 93 and the first magnet 94 slide in the circular hole 96 .

[0035] In the utility model, when the clamping strip 82 limits the limiting tooth 81, the movable strip 92 can be slid on the outer surface of the fixed rod 91 in the direction of the magnet 2 95, so that the connecting rod 93 and the magnet 1 94 can slide together, and the magnet 1 94 and the connecting rod 93 can pass through the circular hole 96 together, and the magnet 1 94 and the magnet 2 95 can be in contact. Since the magnet 1 94 and the magnet 2 95 are magnetically attracted to each other, the slider 88 can be limited to prevent the slider 88 from sliding under the action of external force, thereby further improving the safety.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transmission shaft protection device, comprising a mounting frame (1), a shaft body (2) being fixed between the mounting frames (1), characterized in that: Two protective shells (1) (3) are symmetrically arranged on the outer surface of the shaft body (2), and two protective shells (2) (4) are also symmetrically arranged on the outer surface of the shaft body (2). An extension shell (5) is fixed to a side of the protective shell (2) close to the protective shell (3), and the extension shell (5) slides in the protective shell (3). A stud (6) is fixed to a side of the protective shell (3) and the protective shell (4) close to the mounting frame (1). The stud (6) is slidably connected to the mounting frame (1), and a nut (7) is threadedly connected to the outer surface of the stud (6). A limiting mechanism (8) for preventing the nut (7) from rotating autonomously is arranged on the mounting frame (1), and the limiting mechanism (8) includes a limiting tooth (81) fixed to the outer surface of the nut (7), and a clamping strip (82) is clamped on the outer surface of the limiting tooth (81). An auxiliary mechanism (9) is arranged on the mounting frame (1).

2. A transmission shaft protection device according to claim 1, characterized in that: The limiting mechanism (8) further comprises a mounting box (83) fixed on the mounting frame (1); the clamping strip (82) slides in the inner wall of the mounting box (83); a cross bar (84) is fixed in the mounting box (83); a moving block (85) slides on the outer surface of the cross bar (84); and one end of the clamping strip (82) away from the limiting tooth (81) is fixedly connected to the moving block (85).

3. A transmission shaft protection device according to claim 2, characterized in that: The limiting mechanism (8) further comprises a spring (86) arranged in the installation box (83), and two ends of the spring (86) are respectively fixedly connected to the two moving blocks (85).

4. A transmission shaft protection device according to claim 2, characterized in that: The limiting mechanism (8) further comprises a slide groove (87) provided on the top of the installation box (83); a slider (88) is fixed on the top of the moving block (85); and the slider (88) slides in the slide groove (87).

5. A transmission shaft protection device according to claim 4, characterized in that: The auxiliary mechanism (9) comprises a fixed rod (91) fixed on the mounting frame (1), a movable bar (92) slidingly arranged on the outer surface of the fixed rod (91), a connecting rod (93) fixed on the side of the movable bar (92) close to the slider (88), and a magnet (94) fixed on one end of the connecting rod (93) away from the movable bar (92).

6. A transmission shaft protection device according to claim 5, characterized in that: The auxiliary mechanism (9) further comprises a second magnet (95) fixed on the mounting frame (1), the first magnet (94) and the second magnet (95) are magnetically attracted to each other, a circular hole (96) is provided in the slider (88), and the connecting rod (93) and the first magnet (94) slide in the circular hole (96).

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