Integral double-clamping protective cover for transmission shaft

Abstract

An integral double-clamping protective cover for a transmission shaft comprises a sleeve arranged outside the transmission shaft in a sleeving mode and double-clamping protective cover bodies arranged at the two ends of the sleeve, the double-clamping protective cover bodies are used for containing universal fork joints connected to the ends of the transmission shaft, and each double-clamping protective cover body comprises a cap seat, a nut and a nut, two symmetrically-arranged C-shaped clamping rings are arranged at the positions, close to the opening, in the cap base, the C-shaped clamping rings are hooped on the surface of the universal fork joint in a sleeving mode and are in sliding connection with the universal fork joint, positioning blocks are arranged in the middles of the outer edges of the C-shaped clamping rings, positioning grooves matched with the positioning blocks in an inserted mode are formed in the inner edge of the cap base, and threaded holes penetrating through the side wall of the cap base are formed in the positioning grooves. And the fastening bolt is arranged in the threaded hole and is matched with the positioning block of the C-shaped clamping ring to fix the C-shaped clamping ring in the cap seat. The transmission shaft has the advantages that the two symmetrically-arranged C-shaped clamping rings can be conveniently matched with the universal fork joint at the end of the transmission shaft so that installation and maintenance can be facilitated, oil injection and lubrication can be conveniently conducted on the interior through the fastening bolts and the oil injection holes formed in the annular grooves, and the mechanical reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, specifically relating to an integral double-clamp protective cover for a transmission shaft. Background Technology

[0002] Drive shaft protective covers are widely used in agricultural machinery. Because drive shafts are exposed to harsh environments such as dust, mud, and wind, various protective measures are necessary; otherwise, wear will accelerate, malfunctions will occur frequently, and mechanical parts will fail prematurely. Existing drive shaft protective covers consist of a telescopic cover and a bushing. The bushing is fitted onto the drive shaft, with one end of the telescopic cover connected to the end of the drive shaft and the other end connected to the bushing. While this structure provides protection, it is difficult to assemble, its effectiveness is inconsistent, and cracking and detachment are frequent occurrences. In the existing technology, patent number CN207609759U, utility model name: A drive shaft protective cover, practical application has revealed defects or shortcomings that require improvement. Utility Model Content

[0003] In order to address the defects or shortcomings of existing drive shaft protective covers, the purpose of this utility model is to provide a flexible and quick-assembly, stable-use, and reliable overall double-clamp drive shaft protective cover that effectively improves the lubrication between the drive shaft and the protective cover, prevents dust and foreign matter contamination, extends the service life of machinery, and is reliable in use.

[0004] The present invention adopts the following technical solution:

[0005] A driveshaft integral double-clamp protective cover includes: a sleeve fitted outside the driveshaft and double-clamp protective covers disposed at both ends of the sleeve. The double-clamp protective covers are used to accommodate universal joints connected to the ends of the driveshaft. The double-clamp protective covers include: a cap base with an opening on its end face. Two symmetrically arranged C-shaped retaining rings are disposed inside the cap base near the opening. The C-shaped retaining rings are fitted onto the surface of the universal joint and slidably connected to the universal joint. A positioning block is disposed in the middle of the outer edge of the C-shaped retaining ring. A positioning groove is disposed on the inner edge of the cap base to fit and insert into the positioning block. A threaded hole penetrating the side wall of the cap base is opened in the positioning groove. A fastening bolt is disposed in the threaded hole and cooperates with the positioning block of the C-shaped retaining ring to fix the C-shaped retaining ring in the cap base.

[0006] Optionally, the fastening bolt has a flange at its end, and the positioning block has a receiving groove that engages with the flange.

[0007] Optionally, the C-shaped retaining ring has abutment protrusions at both ends of its outer edge, and the cap seat has a stop block that cooperates with the abutment protrusions.

[0008] Optionally, the fastening bolt has a first oil injection hole in the middle, and the C-shaped retaining ring has a second oil injection hole corresponding to the first oil injection hole. The second oil injection hole passes through the C-shaped retaining ring, and the first oil injection hole and the second oil injection hole together form an oil injection channel.

[0009] Optionally, the outer wall of the universal joint is provided with an annular groove, and the inner edge of the C-shaped retaining ring is provided with a retaining protrusion that mates with the annular groove on the outer wall of the universal joint.

[0010] Optionally, the two ends of the snap-fit ​​protrusion are provided with clearance portions.

[0011] Optionally, the cap base is also provided with a wave cover.

[0012] The beneficial effects of this utility model are that the integrated double retaining ring protective cover for the drive shaft can effectively protect personal safety. The two symmetrically arranged C-shaped retaining rings can easily cooperate with the universal joint at the end of the drive shaft, which is conducive to installation and maintenance. The fastening bolts and oil lubrication can effectively improve the lubrication between the drive shaft and the protective cover, prevent dust and foreign matter contamination, extend the service life of the machinery, and improve the reliability of the machinery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the dual-card protective cover and the universal joint structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the dual-card protective cover of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the fastening bolt end flange and C-shaped retaining ring receiving groove of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first and second oil injection holes of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Example

[0019] like Figure 1-3As shown, a drive shaft integral double-clamp protective cover includes: a sleeve 100 sleeved on the outside of the drive shaft 101 and double-clamp protective covers 102 disposed at both ends of the sleeve 100. The double-clamp protective cover 102 is used to accommodate a universal joint 103 connected to the end of the drive shaft 101. The double-clamp protective cover 102 includes: a cap seat 1, an opening 2 provided on the end face of the cap seat 1, and two symmetrically arranged C-shaped retaining rings 3 disposed inside the cap seat 1 near the opening 2. The C-shaped retaining rings 3 are clamped on the surface of the universal joint 103 and slidably connected to the universal joint 103. A positioning block 4 is provided in the middle of the outer edge of the C-shaped retaining ring 3. A positioning groove 5 is provided on the inner edge of the cap seat 1 to be adapted to and inserted into the positioning block 4. A threaded hole 6 penetrating the side wall of the cap seat 1 is opened in the positioning groove 5. A fastening bolt 7 is disposed in the threaded hole 6 and cooperates with the positioning block 4 of the C-shaped retaining ring 3 to fix the C-shaped retaining ring 3 in the cap seat 1.

[0020] When in use, the sleeve 100 is fitted over the outside of the drive shaft 101. At this time, the universal joints 103 at both ends of the drive shaft 101 are located inside the double-clamp protective cover 102. The C-shaped retaining ring 3 is pre-installed in the cap seat 1. The C-shaped retaining ring 3 is opened by rotating the fastening bolt 7 so that the universal joint 103 can pass through. Then the fastening bolt 7 is rotated in the opposite direction to close the C-shaped retaining ring 3, so that the C-shaped retaining ring 3 is clamped on the universal joint 103.

[0021] like Figure 2 , 4 As shown, the fastening bolt 7 has a flange 8 at its end, and the positioning block 4 has a receiving groove 9 that engages with the flange 8. During installation, align the positioning block 4 of the C-shaped retaining ring 3 with the positioning groove 5, adjust the fastening bolt 7 so that the flange 8 at the end of the fastening bolt 7 engages with the receiving groove 9 on the positioning block 4, and then adjust the position of the C-shaped retaining ring 3 by rotating the fastening bolt 7, so that the two symmetrically arranged C-shaped retaining rings 3 open or close for installation and fixation with the universal joint 103.

[0022] like Figure 2 , 3 As shown, the C-shaped retaining ring 3 has abutment protrusions 10 at both ends of its outer edge, and the cap seat 1 has a stop block 11 that cooperates with the abutment protrusions 10. The abutment protrusions 10 and the stop block 11 are used for auxiliary positioning, which can effectively align the positioning block 4 on the C-shaped retaining ring 3 with the positioning groove 5, and at the same time strengthen the fixation of the C-shaped retaining ring 3 to prevent it from shaking.

[0023] like Figure 5As shown, the fastening bolt 7 has a first oil injection hole 12 penetrating its center, and the C-shaped retaining ring 3 has a second oil injection hole 13 corresponding to the first oil injection hole 12. The second oil injection hole 13 penetrates the C-shaped retaining ring 3, and the first oil injection hole 12 and the second oil injection hole 13 together form an oil injection channel. Through this oil injection channel, internal components can be easily lubricated, preventing dust and foreign matter contamination, extending the service life of the machinery, and improving its reliability.

[0024] like Figure 2 As shown, the outer wall of the universal joint 103 is provided with an annular groove 14, and the inner edge of the C-shaped retaining ring 3 is provided with a retaining protrusion 15 that mates with the annular groove 14 on the outer wall of the universal joint 103. When the two symmetrically arranged C-shaped retaining rings are closed, the double retaining protective cover 102 is installed with the universal joint 103. At this time, the double retaining protective cover 102 can rotate relative to the axis of the universal joint 103, while restricting the radial displacement of the double retaining protective cover 102 along the universal joint 103.

[0025] The locking protrusion 15 has clearance portions 17 at both ends. The radius of the arc surface of the clearance portion 17 is greater than the radius of the arc surface of the locking protrusion 17. When the C-shaped retaining ring 3 opens and moves to its limit, the clearance portion 17 is set so that the cylindrical end face of the universal joint 103 with a diameter greater than that of the locking protrusion 15 can pass through.

[0026] like Figure 1 As shown, the cap base 1 is also provided with a wave cover 16, which is used to protect the internal components and has the effects of dustproof, sunproof, rainproof, and wind and sandproof.

[0027] The beneficial effects of this utility model are as follows: the integrated double retaining ring protective cover for the drive shaft can effectively protect personal safety. The two symmetrically arranged C-shaped retaining rings can easily cooperate with the universal joint at the end of the drive shaft, which is conducive to installation and maintenance. The oil injection holes on the fastening bolts and the annular groove can facilitate internal oil injection and lubrication, effectively improving the lubrication state between the drive shaft and the protective cover, preventing dust and foreign matter contamination, extending the service life of the machinery, and improving the reliability of the machinery.

[0028] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A dual-clamp protective cover for a drive shaft, characterized in that, The system includes: a sleeve (100) fitted over the drive shaft (101) and double-clamp protective covers (102) disposed at both ends of the sleeve (100). The double-clamp protective covers (102) are used to accommodate universal joints (103) connected to the end of the drive shaft (101). The double-clamp protective covers (102) include: a cap seat (1), the end face of which is provided with an opening (2). Inside the cap seat (1) near the opening (2), there are two symmetrically arranged C-shaped retaining rings (3). The ring (3) is sleeved on the surface of the universal joint (103) and is slidably connected to the universal joint (103). A positioning block (4) is provided in the middle of the outer edge of the C-shaped retaining ring (3). A positioning groove (5) is provided in the inner edge of the cap seat (1) to be adapted to the positioning block (4). A threaded hole (6) is opened in the positioning groove (5) to penetrate the side wall of the cap seat (1). A fastening bolt (7) is set in the threaded hole (6) and cooperates with the positioning block (4) of the C-shaped retaining ring (3) to fix the C-shaped retaining ring (3) in the cap seat (1).

2. The integral double-clamp protective cover for the drive shaft according to claim 1, characterized in that, The fastening bolt (7) has a flange (8) at its end, and the positioning block (4) has a receiving groove (9) that engages with the flange (8).

3. The integral double-clamp protective cover for the drive shaft according to claim 1, characterized in that, The C-shaped retaining ring (3) has abutting protrusions (10) at both ends of its outer edge, and the cap seat (1) has a stop block (11) that cooperates with the abutting protrusions (10).

4. The integral double-clamp protective cover for the drive shaft according to claim 1, characterized in that, The fastening bolt (7) has a first oil injection hole (12) that passes through the fastening bolt (7) in the middle. The C-shaped retaining ring (3) is provided with a second oil injection hole (13) that corresponds to the first oil injection hole (12). The second oil injection hole (13) passes through the C-shaped retaining ring (3). The first oil injection hole (12) and the second oil injection hole (13) together form an oil injection channel.

5. The integral double-clamp protective cover for the drive shaft according to claim 1, characterized in that, The outer wall of the universal joint (103) is provided with an annular groove (14), and the inner edge of the C-shaped retaining ring (3) is provided with a retaining protrusion (15) that cooperates with the annular groove (14) on the outer wall of the universal joint (103).

6. The integral double-clamp protective cover for the drive shaft according to claim 5, characterized in that, The snap-fit ​​protrusion (15) is provided with clearance portions (17) at both ends.

7. The integral double-clamp protective cover for the drive shaft according to claim 1, characterized in that, A wave cover (16) is also provided on the cap base (1).

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