Transmission shaft protection structure

Abstract

The utility model discloses a transmission shaft protection structure. A banding piece comprises two structural pieces which are in butt joint with each other and form a butt joint position. An inserting channel and a hooping channel are formed between the two structural parts; a step structure is formed on the inner wall of the insertion channel; limiting plates are arranged in the positions, located in the insertion channels, of the two structural parts. A dismounting gap is formed between the two limiting plates; a bayonet is formed in the side surface, back to the dismounting gap, of the limiting plate; the protective cover comprises two branch cover bodies which are in butt joint with each other. A limiting groove is formed between the butt joint faces of the two branch cover bodies. Elastic arms are arranged on the butt joint side edges of the two branch cover bodies; one end of the protective cover has an assembling state that the protective cover is inserted into the insertion channel and abuts against the step structure. According to the utility model, the connecting position of the transmission shaft and the universal joint can be protected, the safety in the movement process is effectively improved, the protective cover is convenient and rapid to disassemble and assemble, the protective cover can be replaced in time, and the protection requirement and the field operation requirement of the transmission shaft are effectively met.

Description

Technical Field

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

[0002] like Figure 1 The figure shows a conventional universal joint mechanism, a device used to transmit power between two shafts whose relative positions constantly change during operation. Its function is to connect the transmission output shaft and the final drive input shaft, which are not aligned, and to ensure reliable power transmission even when the angle and distance between the two shafts constantly change. It primarily consists of a universal joint 51 and a drive shaft 5.

[0003] During the operation of the universal transmission mechanism, the universal joint 51 is exposed and moves. If the operator is not careful, it is easy to come into contact with this position, which poses a safety hazard. Generally, a protective cover is fixed on the drive shaft 5. The protective cover extends to the position of the universal joint 51 to wrap the universal joint 51 inside the protective cover to play a protective isolation role. The current protective cover is pre-sleeved on the drive shaft 5 during the assembly process of the drive shaft 5 and the universal joint 41, and cannot be removed after assembly. When the protective cover is damaged, the drive shaft 4 and the reducer need to be disassembled, and then the protective cover is put on the drive shaft 5. The disassembly and assembly of the above-mentioned protective cover is cumbersome, time-consuming and labor-intensive, and difficult to replace on site in a timely manner.

[0004] Furthermore, during long-term operation, universal joint 51 requires lubrication to ensure smooth rotation. Currently, due to the difficulty in removing and installing the protective cover, a grease gun with an extended oil hose must be used to reach into the protective cover to add lubricant. This operation is laborious and difficult to monitor in the confined working space, making it difficult to monitor the lubrication status. Utility Model Content

[0005] In response to the above-mentioned technical problems, the purpose of the utility model is to propose a drive shaft protection structure that can protect the connection position between the drive shaft and the universal joint, effectively improve the safety of the movement process, and the protective cover is easy and quick to disassemble and assemble, and the protective cover can be replaced in time, effectively meeting the protection needs of the drive shaft and on-site operation needs.

[0006] The technical solution of the utility model is achieved as follows: a transmission shaft protection structure includes a protective cover, a clamping member, and a fastener;

[0007] The clamping member includes two structural members that are radially butted against each other and form a docking position; an axially extending insertion channel is formed between the two structural members; the insertion channel includes an insertion channel and a clamping channel that are spaced apart; a step structure is formed on the inner wall of the insertion channel; the two structural members are provided with axially extending limit plates located in the insertion channel; the two limit plates are arranged on opposite sides of the docking position, and a disassembly gap is formed therebetween; a bayonet that is connected to the disassembly gap is provided on the side of the limit plate facing away from the disassembly gap; a disassembly port that is connected to the disassembly gap is provided on the outer wall of the structural member;

[0008] The protective cover comprises two sub-cover bodies that are butted against each other in the radial direction; a protective space is formed between the two sub-cover bodies; a limiting groove extending in the axial direction is formed between the butting surfaces of the two sub-cover bodies; elastic arms are provided on the butting side edges of the two sub-cover bodies; the elastic ends of the elastic arms extend into the limiting grooves and have a rebound force in the butting direction of the two sub-cover bodies;

[0009] One end of the protective cover has an assembled state in which it is inserted into the insertion channel and abuts against the step structure; in the assembled state, the two limit plates are axially inserted into the limit grooves, and the elastic ends of the elastic arms are snapped into the corresponding side slots;

[0010] The fastener is used to lock or unlock the two structural members when the two structural members are butted against each other.

[0011] Furthermore, a plurality of slots are provided on the outer wall of the structural member at intervals along the circumferential direction; a spring structure is inserted into the slot; the elastic end of the spring structure extends into the insertion channel and has a rebound force toward the inner direction of the insertion channel; in the assembled state, the elastic end of the spring structure is pressed against the outer wall of the protective cover.

[0012] Furthermore, the clamping channel is adapted to the transmission shaft, and the diameter of the clamping channel is smaller than the diameter of the plug-in channel.

[0013] Furthermore, the protective structure includes an annular elastic member; a groove extending circumferentially is provided on the outer peripheral surface of the sub-cover body; the grooves on the two sub-cover bodies are combined to form an annular groove; the annular elastic member is sleeved on the outside of the two sub-bodies and accommodated in the annular groove.

[0014] Furthermore, a stop plane is provided on the elastic end of the elastic arm; in the assembled state, the stop plane forms a limiting fit with the inner wall of the bayonet in the axial direction.

[0015] Furthermore, the elastic arm is arranged at an angle, having the elastic end close to the docking position of the sub-cover body and the fixed end away from the docking position of the sub-cover body; the fixed end of the elastic arm is fixedly connected to the sub-cover body; the elastic arms on the two sub-cover bodies are symmetrically arranged on both sides of the docking position of the sub-cover body.

[0016] Furthermore, the fastener is a bolt assembly; and the two structural members are provided with assembly holes for the bolt assembly to penetrate and connect.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] 1. The utility model uses a clamping member and a protective cover in combination, and the clamping member is fixed on the drive shaft by clamping. The protective cover is formed by docking two sub-cover bodies and plugging with the clamping member to wrap the connection position between the drive shaft and the universal joint. The elastic arm and the bayonet cooperate to limit the axial movement of the protective cover, and the plug-in limit cooperation of the limit plate and the limit groove can limit the rotation of the protective cover in the plug-in channel. By designing the disassembly gap and the disassembly port, the elastic arm can be pressed inward through the disassembly gap by a tool, so that the elastic arm is disengaged from the bayonet, thereby enabling the protective cover to be removed from the plug-in channel. The combination of the above methods can protect the connection position between the drive shaft and the universal joint, effectively improving the safety of the movement process, and the protective cover is convenient and quick to disassemble and assemble, and can be replaced in time, effectively meeting the protection needs of the drive shaft and the needs of on-site operations.

[0019] 2. The utility model uses the spring structure in conjunction with each other. When the protective cover is inserted into the insertion channel, the elastic end of each spring structure contacts the outer peripheral surface of the protective cover to provide elastic force to press the protective cover, so as to limit the deviation of the protective cover in the insertion channel and limit the relative movement of the two sub-cover bodies, further improving the stability of the protective cover assembly and enhancing practicality.

[0020] 3. The utility model uses an annular elastic member to tighten the end of the protective cover away from the tightening member to restrict the two sub-cover bodies of the protective cover from moving relative to each other during exercise, further improving the stability of the protective cover during exercise and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the utility model is further described below with reference to the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a universal joint transmission device in the prior art;

[0023] Figure 2 It is a three-dimensional structural diagram of the overall structure of the utility model;

[0024] Figure 3 for Figure 2 Exploded view of;

[0025] Figure 4 for Figure 2 A side view structural diagram of ;

[0026] Figure 5 for Figure 4 The sectional view at AA in the figure;

[0027] Figure 6 for Figure 4 Cross-sectional view at BB in FIG;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the tightening member of the present invention;

[0029] Figure 8 for Figure 7 Exploded view in;

[0030] Figure 9 Exploded view of the protective cover of the utility model

[0031] Figure 10 This is a side view structural diagram of the protective cover of the present utility model;

[0032] Figure 11 This is a schematic diagram of the three-dimensional structure of the utility model when in use;

[0033] Among them: 1. Clamping member; 11. Structural member; 12. Insertion channel; 121. Insertion channel; 122. Clamping channel; 13. Limiting plate; 131. Bayonet; 132. Disassembly gap; 133. Disassembly opening; 14. Slot; 15. Step structure; 16. Assembly hole; 2. Spring clip structure; 3. Protective cover; 31. Sub-cover body; 311. Groove; 32. Limiting groove; 33. Elastic arm; 4. Annular elastic member; 5. Drive shaft; 51. Universal joint. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0035] like Figure 2-11The figure shows a transmission shaft 5 protection structure described in this embodiment, which is suitable for protecting the position on the transmission shaft 5 where the universal joint 51 is connected. The transmission shaft 5 protection structure includes a protective cover 3, a clamping member 1, and a fastener. The clamping member 1 has two axial and radial directions. The clamping member 1 includes two relatively arranged structural members 11. The two structural members 11 are connected to each other in the radial direction of the clamping member 1 and form a docking position. An insertion channel 12 extending in the axial direction is formed between the two structural members 11. The two ends of the insertion channel 12 are open. The insertion channel 12 includes a plug-in channel 121 and a clamping channel 122 arranged at intervals in the axial direction. The inner diameter of the plug-in channel 121 is larger than the inner diameter of the clamping channel 122, and the clamping channel 122 is adapted to the outer diameter of the transmission shaft 5. A rubber layer is arranged on the inner wall of the clamping channel 122. By placing the two structural members 11 on opposite sides of the transmission shaft 5 and locking them, the clamping member 1 can be clamped on the transmission shaft 5 through the clamping channel 122. An annular step structure 15 is formed on the inner wall of the aforementioned plug-in channel 121. The inner diameter of the step structure 15 is larger than the inner diameter of the clamping channel 122. The end face of the step structure 15 facing the plug-in channel 121 forms an abutment surface. A limit plate 13 extending axially is formed on the two structural members 11 and located in the plug-in channel 121. The two limit plates 13 are arranged on opposite sides of the docking position, and a disassembly gap 132 is formed between the two. Among them, the two limit plates 13 are arranged in pairs. According to the actual design, two pairs of limit plates 13 can be arranged between the two groups of structural members 11. The size of the disassembly gap 132 depends on the actual design. Each stop plate 13 is formed with a bayonet 131, located on the side of the stop plate 13 facing away from the disassembly gap 132 and communicating with the disassembly gap 132. A disassembly opening 133 communicating with the disassembly gap 132 is formed on the outer wall of the structural member 11. This disassembly opening 133 allows a disassembly tool to be inserted into the disassembly gap 132.

[0036] In this embodiment, the aforementioned fastener is used to lock or unlock the two structural members 11 when they are docked. The fastener is a bolt assembly, and the two structural members 11 are provided with mounting holes 16 through which the bolt assembly is inserted. The bolt assembly is tightened to secure the two structural members 11 to each other.

[0037] The aforementioned protective shield 3 has radial and axial support and is made of plastic or metal. It comprises two opposing sub-shield bodies 31. The two sub-shield bodies 31 are radially butted together to form the protective shield 3. A protective space is formed between the two sub-shield bodies 31. The protective axis has a first end and a second end in the axial direction, and the inner diameter of the protective space of the protective shield 3 gradually increases from the first end toward the second end. A limiting groove 32 extending axially is formed between the butting surfaces of the two sub-shield bodies 31. One end of the limiting groove 32 is open, forming a socket, while the other end is closed. Elastic arms 33 are machined along the butting edges of the two sub-shield bodies 31. These elastic arms 33 are elongated, with a free end near the butting position of the sub-shield bodies 31 and a fixed end further away from the butting position. Due to the inherent structure of the elastic arms 33, the free ends of the elastic arms 33 exert elastic force, forming resilient ends. In this embodiment, the elastic arms 33 on the two sub-cover bodies 31 are arranged at an angle, and the fixed ends of the elastic arms 33 are fixedly connected to the sub-cover bodies 31. The elastic arms 33 on the two sub-cover bodies 31 are symmetrically arranged on both sides of the docking position of the sub-cover bodies 31. The elastic ends of the elastic arms 33 extend into the limiting grooves 32 and exert a rebound force in the docking direction of the two sub-cover bodies.

[0038] The inner diameter of the aforementioned plug-in channel 121 is adapted to the outer diameter of one end (the aforementioned first end) of the protective cover 3. One end of the protective cover 3 has an assembled state in which it is inserted into the plug-in channel 121 and abuts against the step structure 15. In this assembled state, the two limit plates 13 are axially inserted into the limit grooves 32, and the elastic ends of the elastic arms 33 are snapped into the bayonet 131 on the corresponding sides. Through the above-mentioned structural design, a limit fit is formed between the limit plates 13 and the limit grooves 32 to limit the overall rotation of the protective cover 3 in the plug-in channel 121, and a limit fit is formed axially between the bayonet 131 and the elastic arm 33 to limit the protective cover 3 from disengaging from the plug-in channel 121. In this assembled state, a clearance fit is formed between one end of the protective cover 3 and the plug-in channel 121.

[0039] In the specific structural design, a stop surface is machined on the elastic end of the elastic arm 33. When in the aforementioned assembled state, the stop surface forms a limited fit with the inner top wall of the bayonet 131 in the axial direction, thereby preventing the protective cover 3 from being separated from the insertion channel 121.

[0040] In this embodiment, a plurality of slots 14 are processed on the outer wall of the aforementioned structural member 11 at intervals along the circumferential direction. The slot 14 extends along the axial direction of the structural member 11, with one end being open and the other end being closed. A spring structure 2 is inserted into the slot 14. The spring structure 2 is a conventional component of the prior art, formed by bending a metal material. The elastic end of the spring structure 2 extends into the plug-in channel 121 and has a rebound force toward the interior of the plug-in channel 121. In the aforementioned assembly state, the elastic end of the spring structure 2 is pressed against the outer wall of the protective cover 3. Through the above-mentioned structural design, a limiting space is formed between the spring structures 2 on the two structural members 11 to limit the protective cover 3 in the plug-in channel 121.

[0041] Among them, the protective structure of this embodiment includes an annular elastic member 4. The annular elastic member 4 is a rubber ring or a silicone ring, which has a certain elastic force. A number of grooves 311 extending in the circumferential direction are processed on the outer peripheral surface of the sub-cover body 31. When the two sub-cover bodies 31 are docked and combined with each other, the grooves 311 at corresponding positions on the two sub-cover bodies 31 are combined to form an annular groove. The aforementioned annular elastic member 4 is sleeved on the outside of the two sub-bodies and accommodated in the annular groove. Through the above-mentioned structural design, the annular elastic member 4 can tighten the two sub-cover bodies 31, thereby limiting the two sub-cover bodies 31 from moving away from each other.

[0042] During specific assembly, the two structural members 11 of the clamping member 1 are placed on both sides of the transmission shaft 5, and the two structural members 11 are slightly connected and locked by fasteners, so that the clamping member 1 can move on the transmission shaft 5 and adjust its position. The two sub-cover bodies 31 of the protective cover 3 are placed on both sides of the transmission shaft 5 and docked to wrap the connection position between the transmission shaft 5 and the universal joint 51. The protective cover 3 is then inserted as a whole into the insertion channel 121 between the two structural members 11, the limit plate 13 is synchronously plugged into the limit groove 32, and the elastic arm 33 is snapped into the bayonet 131. Finally, the two structural members 11 are completely locked by fasteners, and the two structural members 11 are clamped to the transmission shaft 5 through the clamping channel 122, thereby fixing the clamping member 1 on the transmission shaft 5. Finally, the annular elastic member 4 is sleeved on the end of the protective cover 3 away from the clamping member 1 to constrain the two sub-cover bodies 31 of the protective cover 3 from relative movement during movement. When removing the protective cover 3, use a tool such as a screwdriver to insert it into the removal gap 132 and press the elastic arm 33 inward to make the elastic arm 33 disengage from the bayonet 131, and then directly pull out the protective cover 3, so that the protective cover 3 can be removed from the insertion channel 121.

[0043] In the above-described method, the elastic arm 33 and the bayonet 131 cooperate with each other to limit the axial movement of the protective cover 3, and the limiting plate 13 cooperates with the limiting groove 32 to limit the rotation of the protective cover 3 within the insertion channel 121. The elastic ends of each elastic structure 2 contact the outer peripheral surface of the protective cover 3 to provide elastic force to compress the protective cover 3, thereby limiting the displacement of the protective cover 3 within the insertion channel 121 and limiting the relative movement of the two sub-cover bodies 31. The combination of the above-described methods can protect the connection between the drive shaft 5 and the universal joint 51, effectively improving the safety of the movement process. The protective cover 3 is convenient and quick to disassemble and assemble, and can be replaced in a timely manner, effectively meeting the protection requirements of the drive shaft 5 and the needs of on-site operations.

[0044] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A transmission shaft protection structure, comprising a protective cover, a clamping member, and a fastener; characterized in that: The clamping member includes two structural members that are radially butted against each other and form a docking position; an axially extending insertion channel is formed between the two structural members; the insertion channel includes an insertion channel and a clamping channel that are spaced apart; a step structure is formed on the inner wall of the insertion channel; the two structural members are provided with axially extending limit plates located in the insertion channel; the two limit plates are arranged on opposite sides of the docking position, and a disassembly gap is formed therebetween; a bayonet that is connected to the disassembly gap is provided on the side of the limit plate facing away from the disassembly gap; a disassembly port that is connected to the disassembly gap is provided on the outer wall of the structural member; The protective cover comprises two sub-cover bodies that are butted against each other in the radial direction; a protective space is formed between the two sub-cover bodies; a limiting groove extending in the axial direction is formed between the butting surfaces of the two sub-cover bodies; elastic arms are provided on the butting side edges of the two sub-cover bodies; the elastic ends of the elastic arms extend into the limiting grooves and have a rebound force in the butting direction of the two sub-cover bodies; One end of the protective cover has an assembled state in which it is inserted into the insertion channel and abuts against the step structure; in the assembled state, the two limit plates are axially inserted into the limit grooves, and the elastic ends of the elastic arms are snapped into the corresponding side slots; The fastener is used to lock or unlock the two structural members when the two structural members are butted against each other.

2. The transmission shaft protection structure according to claim 1, characterized in that: A plurality of slots are provided on the outer wall of the structural member at intervals along the circumferential direction; a spring structure is inserted into the slot; the elastic end of the spring structure extends into the insertion channel and has a rebound force toward the interior of the insertion channel; in the assembled state, the elastic end of the spring structure is pressed against the outer wall of the protective cover.

3. The transmission shaft protection structure according to claim 1, characterized in that: The clamping channel is adapted to the transmission shaft, and the diameter of the clamping channel is smaller than the diameter of the plug-in channel.

4. The transmission shaft protection structure according to claim 1, characterized in that: The protective structure includes an annular elastic member; a groove extending along the circumferential direction is provided on the outer peripheral surface of the sub-cover body; the grooves on the two sub-cover bodies are combined to form an annular groove; the annular elastic member is sleeved on the outside of the two sub-bodies and accommodated in the annular groove.

5. The transmission shaft protection structure according to claim 1, characterized in that: A stop plane is provided on the elastic end of the elastic arm; in the assembled state, the stop plane forms a limiting fit with the inner wall of the bayonet in the axial direction.

6. The transmission shaft protection structure according to claim 1, characterized in that: The elastic arm is arranged obliquely, and has the elastic end close to the docking position of the sub-cover body and the fixed end away from the docking position of the sub-cover body; the fixed end of the elastic arm is fixedly connected to the sub-cover body; the elastic arms on the two sub-cover bodies are symmetrically arranged on both sides of the docking position of the sub-cover body.

7. The transmission shaft protection structure according to claim 1, characterized in that: The fasteners are bolt assemblies; and the two structural members are provided with assembly holes for the bolt assemblies to penetrate and connect.

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