Transmission shaft with protection device

Abstract

The utility model relates to the technical field of transmission shafts, in particular to a transmission shaft with a protection device, which comprises a transmission shaft body, an upper protection sleeve and a lower protection sleeve, a plurality of positioning rods are mounted at the bottom of the upper protection sleeve, and a plurality of positioning grooves are formed in the top of the lower protection sleeve; the transmission shaft has the beneficial effects that by oppositely pulling the pull plates on the two sides, the plug connectors are driven to be gradually separated from the slots, and the elastic plug connectors on the upper side and the lower side of the plug connectors are synchronously driven to be separated from the slots and the through grooves, so that limitation between the upper protective sleeve and the transmission shaft body and limitation between the lower protective sleeve and the transmission shaft body are relieved, and replacement and maintenance are convenient; the upper protection sleeve and the lower protection sleeve are arranged on the outer side of the transmission shaft body in a sleeving mode and assembled through the positioning rods and the positioning grooves, then the inserting pieces on the two sides are pushed to enable the elastic inserting pieces to reset, one side of each elastic inserting piece is inserted into the inner wall of the corresponding inserting groove, and then the upper protection sleeve and the lower protection sleeve continue to be assembled with the transmission shaft body for subsequent maintenance and use. The use effect of the transmission shaft is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission shaft technical field, concretely is a kind of transmission shaft with protection device. BACKGROUND

[0002] Transmission shaft is the important component of automobile drive train and transmits power, its function is to transmit power with the gearbox, drive axle to wheel, so that automobile generates driving force, transmission shaft as the core component of automobile power transmission system, undertakes the important task of the power generated by engine effectively transmitted to wheel, it not only ensures the normal travel of vehicle, also through the collaborative work with gearbox and drive axle, improves the driving experience and performance of automobile.

[0003] In prior art, the surface of conventional transmission shaft is easily damaged in use due to lack of corresponding protection device, thereby affecting the normal use of transmission shaft, and the protective sleeve is added to the outer side of existing transmission shaft, which protects the transmission shaft to some extent, but the protective sleeve needs to be maintained or replaced after long time use, and the operator needs to use auxiliary tools to disassemble the protective sleeve in the process, which increases the complexity of maintenance, thereby affecting the maintenance effect and reducing the use efficiency of transmission shaft.

[0004] Therefore, a transmission shaft with protection device is needed to solve the problems that the dismounting operation of protective sleeve of existing transmission shaft is relatively complex, is inconvenient for operator to use, and affects the use effect of transmission shaft. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of transmission shaft with protection device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of transmission shaft with protection device, including transmission shaft body, upper protective sleeve and lower protective sleeve, the bottom of the upper protective sleeve is equipped with multiple positioning rods, the top of the lower protective sleeve is equipped with multiple positioning grooves, the front and rear sides of the upper protective sleeve are both equipped with two fixed blocks, and the front and rear sides of the lower protective sleeve are both equipped with another two fixed blocks.

[0007] Preferably, the front and rear sides of the transmission shaft body are both equipped with two insertion slots, the similar side of the fixed block of upper and lower sides is both equipped with through slot, the inner wall between every two through slots is both inserted with insertion piece, the upper and lower sides of the insertion piece are both equipped with elastic insert, and the similar side of the insertion piece of left and right sides is both equipped with pull plate.

[0008] Preferably, the elastic inserts on the left and right sides are all through the through slot, and the side away from each other is inserted into the inner wall of the insertion slot, and the elastic inserts on the left and right sides are in the extrusion deformation state.

[0009] Preferably, one of the mounting blocks is mounted on the left and right sides of the upper protective sleeve, and the other mounting block is mounted on the left and right sides of the lower protective sleeve, the inner part of the mounting block is provided with a sliding slot, the inner wall of the sliding slot is provided with a connecting plate on the front and rear sides, the side away from each other of the connecting plate on the front and rear sides is provided with a limiting column, and a spring is arranged between every two connecting plates, and the left and right sides of the transmission shaft body are provided with two installation grooves, and the inner wall of the installation groove is provided with a limiting slot on the front and rear sides.

[0010] Preferably, the side away from each other of the limiting column on the front and rear sides is inserted into the inner wall of the limiting slot, and the spring is arranged in the inner wall of the sliding slot.

[0011] Preferably, the mounting block is inserted into the inner wall of the limiting slot.

[0012] Preferably, the connecting plate on the front and rear sides is inserted into the inner wall of the limiting slot, and the spring is arranged in the inner wall of the sliding slot.

[0013] Compared with the prior art, the transmission shaft with the protection device has the beneficial effects that:

[0014] The transmission shaft with the protection device provided by the utility model, by pulling the pull plate on the two sides, the insertion piece is gradually separated from the insertion slot, and the elastic inserts on the upper and lower sides of the insertion piece are also separated from the insertion slot and the through slot, so that the restriction between the upper protective sleeve, the lower protective sleeve and the transmission shaft body is removed, the replacement and maintenance are facilitated, after the operation is completed, the upper protective sleeve and the lower protective sleeve are respectively sleeved on the outer side of the transmission shaft body, and the two are assembled by using the positioning rod and the positioning slot, then the insertion piece on the two sides is pushed to reset the elastic inserts, and the side of the elastic inserts is inserted into the inner wall of the insertion slot, and then the upper protective sleeve and the lower protective sleeve are assembled with the transmission shaft body, so as to facilitate the subsequent maintenance and use, thereby improving the use effect of the transmission shaft. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is Figure 2 It is a structure sectional view of A-A in the middle;

[0018] Figure 4 It isFigure 3 Structure enlarged view at B;

[0019] Figure 5 Structure schematic view of installation slot of the utility model;

[0020] Figure 6 Structure schematic view of positioning slot of the utility model;

[0021] Figure 7 Structure schematic view of positioning rod of the utility model;

[0022] Figure 8 Structure schematic view of plug-in part of the utility model.

[0023] In the figure: 1, transmission shaft body;2, upper protective sleeve;3, lower protective sleeve;4, plug-in part;5, limiting column;6, connecting plate;7, sliding slot;8, spring;9, limiting slot;10, installation slot;11, plug-in slot;

[0024] 12, positioning slot;13, positioning rod;14, fixed block;15, elastic plug-in part;16, through slot;17, pull plate;18, installation block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme of the utility model to carry out clearly, completely describe, and the advantage is more clear and clear, following combining the drawing to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiment, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without doing the creative work, belong to the scope of the protection of the utility model.

[0026] Embodiment one: please refer to Figures 1-8 The utility model provides a kind of technical scheme: a transmission shaft with protection device, including transmission shaft body 1, upper protective sleeve 2 and lower protective sleeve 3, the bottom of upper protective sleeve 2 is equipped with multiple positioning rods 13, the top of lower protective sleeve 3 is equipped with multiple positioning slots 12, the front and rear sides of upper protective sleeve 2 are both equipped with two fixed blocks 14, and the front and rear sides of lower protective sleeve 3 are both equipped with another two fixed blocks 14;The fixed block 14 between upper and lower sides is adhered, to facilitate the installation between upper protective sleeve 2 and lower protective sleeve 3, positioning rod 13 is inserted in the inner wall of positioning slot 12, to facilitate the installation of upper protective sleeve 2 and lower protective sleeve 3, prevent offset misplacement when installing, upper protective sleeve 2 is installed on the upper outer side of transmission shaft body 1, and lower protective sleeve 3 is installed on the lower outer side of transmission shaft body 1, so that the entire protective sleeve is used in assembled form, it is convenient to replace separately, to reduce the cost of replacement.

[0027] First, respectively, the upper and lower two sides pull the upper protective sleeve 2 and the lower protective sleeve 3, let the positioning rod 13 out of the positioning groove 12, and drive the upper and lower two sides of the fixed block 14 apart, then the upper protective sleeve 2 and the lower protective sleeve 3 can be maintained respectively, after maintenance, the upper protective sleeve 2 and the lower protective sleeve 3 are respectively sleeved on the outer side of the transmission shaft body 1, and the positioning rod 13 is inserted into the inner wall of the positioning groove 12, so that the upper protective sleeve 2 and the lower protective sleeve 3 are maintained or replaced, thereby improving the use effect of the transmission shaft body 1. Embodiment two: on the basis of example one, in order to realize the assembly of the upper protective sleeve 2 and the lower protective sleeve 3 and the transmission shaft body 1, two insertion slots 11 are formed on the front and rear sides of the transmission shaft body 1, the similar side of the upper and lower two sides of the fixed block 14 is provided with a through slot 16, the inner wall between every two through slots 16 is inserted with an insertion piece 4, the upper and lower two sides of the insertion piece 4 are installed with elastic inserts 15, and the similar side of the left and right two sides of the insertion piece 4 is installed with a pull plate 17; the left and right two sides of the elastic insert 15 are inserted into the inner wall of the insertion slot 11 through the through slot 16, and the opposite side is inserted into the inner wall of the insertion slot 11, and the elastic insert 15 is in the extrusion deformation state, so as to increase the friction between the insertion piece 4 and the through slot 16 and the insertion slot 11 by using the elastic insert 15, thereby improving the assembly stability between the upper protective sleeve 2 and the lower protective sleeve 3 and the transmission shaft body 1, and the opposite side of the left and right two sides of the insertion piece 4 is inserted into the inner wall of the insertion slot 11, so as to facilitate the assembly between the upper protective sleeve 2 and the lower protective sleeve 3.

[0028] First, pull the two sides of the pull plate 17 to move towards each other, gradually drive the plug-in part 4 to separate from the slot 11, and synchronously drive the upper and lower elastic inserts 15 to gradually separate from the slot 11 and the through slot 16, then the upper protective sleeve 2 and the lower protective sleeve 3 can be pulled up and down respectively, the positioning rod 13 is separated from the positioning groove 12, then the upper protective sleeve 2 and the lower protective sleeve 3 can be maintained, after maintenance, the upper protective sleeve 2 and the lower protective sleeve 3 are respectively sleeved on the outside of the transmission shaft body 1, and the positioning rod 13 is inserted into the inner wall of the positioning groove 12, and the two sides of the plug-in part 4 are inserted into the inner wall of the through slot 16, and the side of the elastic insert 15 is gradually inserted into the inner wall of the slot 11, so that the elastic insert 15 is in a deformed state, thereby increasing the assembly stability between the upper protective sleeve 2 and the lower protective sleeve 3 and the transmission shaft body 1, and improving the use effect of the transmission shaft body 1. In example two, in order to improve the installation stability between the upper protective sleeve 2 and the lower protective sleeve 3 and the transmission shaft body 1, and slow down the impact of external impact on the transmission shaft body 1, one of the mounting blocks 18 is installed on the left and right sides of the upper protective sleeve 2, and the other mounting block 18 is installed on the left and right sides of the lower protective sleeve 3, the sliding groove 7 is formed in the inside of the mounting block 18, the connecting plate 6 is installed on the inner wall of the sliding groove 7, the limiting column 5 is installed on the side of the front and rear connecting plates 6, the spring 8 is installed between every two connecting plates 6, the two installation grooves 10 are formed on the left and right sides of the transmission shaft body 1, and the limiting groove 9 is formed on the inner wall of the installation groove 10; the side of the front and rear limiting columns 5 is inserted into the mounting block 18, and is inserted into the inner wall of the limiting groove 9, thereby increasing the stability of the assembly between the upper protective sleeve 2 and the lower protective sleeve 3 and the transmission shaft body 1 by inserting the limiting column 5 and the limiting groove 9, the spring 8 is arranged on the inner wall of the sliding groove 7, thereby slowing down the impact of external impact on the transmission shaft body 1 by the spring 8; the mounting block 18 is inserted into the inner wall of the limiting groove 9, thereby facilitating the installation of the upper protective sleeve 2 and the lower protective sleeve 3.

[0029] First, respectively pull the upper and lower protective cover 2 and 3, and respectively let the two sides of the limiting groove 9 from the installation groove 10, while driving the front and rear sides of the limiting column 5 and the limiting groove 9 between the extrusion and gradually shrink to the inner wall of the sliding groove 7, thereby driving the connecting plate 6 to extrude the spring 8, and let the spring 8 in the compression state, when the limiting column 5 from the installation groove 10, can be respectively on the upper and lower protective cover 2 and 3 maintenance, after the completion of the upper and lower protective cover 2 and 3 are respectively set in the transmission shaft body 1 outside, while the left and right sides of the installation block 18 will reset the installation groove 10 in the inner wall, at this time, the limiting column 5 is extruded again to shrink to the inner wall of the sliding groove 7, and after the installation block 18 is completely installed between the installation groove 10, the spring 8 is used to push the front and rear sides of the limiting column 5 and the limiting groove 9 between the plug-in to increase the assembly stability between the upper and lower protective cover 2, 3 and the transmission shaft body 1, while the spring 8 slows down the impact of the external impact on the transmission shaft body 1.

[0030] In actual use, first, respectively pull the two sides of the pull plate 17 to move towards each other, gradually extrude the plug-in part 4 from the insertion slot 11, and synchronously drive the upper and lower sides of the elastic plug-in part 15 to gradually extrude the insertion slot 11 and the through slot 16, then respectively pull the upper and lower protective cover 2 and 3, let the positioning rod 13 extrude the positioning slot 12, and respectively let the two sides of the limiting groove 9 extrude the installation groove 10, while driving the front and rear sides of the limiting column 5 and the limiting groove 9 between the extrusion and gradually shrink to the inner wall of the sliding groove 7, thereby driving the connecting plate 6 to extrude the spring 8, and let the spring 8 in the compression state, when the limiting column 5 from the installation groove 10, can be respectively on the upper and lower protective cover 2 and 3 maintenance, after the completion of the upper and lower protective cover 2 and 3 are respectively set in the transmission shaft body 1 outside, and let the positioning rod 13 plug-in in the inner wall of the positioning slot 12, while the left and right sides of the installation block 18 will reset the installation groove 10 in the inner wall, at this time, the limiting column 5 is extruded again to shrink to the inner wall of the sliding groove 7, and after the installation block 18 is completely installed between the installation groove 10, the spring 8 is used to push the front and rear sides of the limiting column 5 and the limiting groove 9 between the plug-in to increase the assembly stability between the upper and lower protective cover 2, 3 and the transmission shaft body 1, while the spring 8 slows down the impact of the external impact on the transmission shaft body 1.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A propeller shaft with protection, comprising a propeller shaft body (1), an upper protection sleeve (2) and a lower protection sleeve (3), characterized in that: The bottom of the upper protective sleeve (2) is provided with a plurality of positioning rods (13), the top of the lower protective sleeve (3) is provided with a plurality of positioning grooves (12), and the front and rear sides of the upper protective sleeve (2) are both provided with two fixing blocks (14), and the front and rear sides of the lower protective sleeve (3) are both provided with another two fixing blocks (14).

2. A propeller shaft with a protection device according to claim 1, characterized in that: The front and rear sides of the transmission shaft body (1) are both provided with two insertion grooves (11), the proximal sides of the fixing blocks (14) on the upper and lower sides are both provided with through grooves (16), the inner walls between every two through grooves (16) are both inserted with an insertion piece (4), the upper and lower sides of the insertion piece (4) are both provided with elastic insertion pieces (15), and the proximal sides of the insertion pieces (4) on the left and right sides are both provided with pull plates (17).

3. A propeller shaft with a protection device according to claim 2, characterized in that: The elastic insertion pieces (15) on the left and right sides both penetrate through the through grooves (16) and are inserted into the inner walls of the insertion grooves (11) on the distal sides, the elastic insertion pieces (15) are in an extrusion deformation state, and the distal sides of the insertion pieces (4) on the left and right sides are both inserted into the inner walls of the insertion grooves (11).

4. A propeller shaft with a protection device according to claim 1, characterized in that: The left and right sides of the upper protective sleeve (2) are both provided with one of the mounting blocks (18), the left and right sides of the lower protective sleeve (3) are both provided with another one of the mounting blocks (18), the inner part of the mounting block (18) is provided with a sliding groove (7), the inner walls of the sliding groove (7) on the front and rear sides are both provided with connecting plates (6), the distal sides of the connecting plates (6) on the front and rear sides are both provided with limiting columns (5), springs (8) are arranged between every two connecting plates (6), and the left and right sides of the transmission shaft body (1) are both provided with two mounting grooves (10), the inner walls of the mounting grooves (10) on the front and rear sides are both provided with limiting grooves (9).

5. A propeller shaft with a protection device according to claim 4, characterized in that: The distal ends of the limiting columns (5) on the front and rear sides both penetrate through the mounting blocks (18) and are inserted into the inner walls of the limiting grooves (9), and the springs (8) are arranged in the inner walls of the sliding grooves (7).

6. A propeller shaft with a protection device according to claim 4, characterized in that: The mounting blocks (18) are inserted into the inner walls of the limiting grooves (9).

7. A propeller shaft with a protection device according to claim 1, characterized in that: The fixing blocks (14) on the upper and lower sides are attached to each other, the positioning rods (13) are inserted into the inner walls of the positioning grooves (12), the upper protective sleeve (2) is arranged on the upper outer side of the transmission shaft body (1), and the lower protective sleeve (3) is arranged on the lower outer side of the transmission shaft body (1).

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