Steel brush spline shaft not prone to breakage

Abstract

The utility model relates to the technical field of mechanical transmission, and discloses a steel brush spline shaft not easy to break, which comprises a spline shaft main body, an adjusting shaft sleeve is arranged outside the spline shaft main body, the left side of the adjusting shaft sleeve is fixedly connected with a connecting end block, and a planet carrier is arranged outside the connecting end block. Spline nuts are installed outside the spline shaft body and the adjusting shaft sleeve, outer rings are installed outside the spline nuts, steel balls are installed between the spline nuts and the outer rings, and outer racks are fixedly connected to the outer wall of the spline shaft body. According to the steel brush spline shaft not prone to breakage, the overall supporting strength is improved by adding the reinforcing ribs, the torsion borne by the inner rack and the outer rack in the transmission process can be shared by adding the cross-shaped penetrating reinforcing screw rod, and therefore the situation that the adjusting shaft sleeve is broken after telescopic adjustment is conducted is avoided, and the durable effect is improved; the problems of poor supporting strength and easy breakage are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a steel brush spline shaft which is not easy to break. Background Art

[0002] Spline shaft is a kind of mechanical transmission. It has the same function as flat key, semicircular key and wedge key, which is to transmit mechanical torque. Spline shaft is divided into two categories: rectangular spline shaft and involute spline shaft. Rectangular spline shaft is widely used in spline shaft, while involute spline shaft is used for connections with large loads, high centering accuracy requirements, and larger sizes.

[0003] Some spline shafts also have the function of telescopic adjustment. The telescopic spline shaft contains an internal hollow adjustment part. Due to the internal hollowness, this part only relies on the fit between the racks to achieve torsional force. The supporting strength of the racks is low. When used for a long time, the telescopic spline shaft is prone to the problem of breakage of the adjustment part, which affects the service life of the spline shaft.

[0004] There is an urgent need for a steel brush spline shaft that is not easy to break to solve the technical defects proposed in the above technology. Utility Model Content

[0005] The purpose of the utility model is to provide a steel brush spline shaft that is not easy to break, so as to solve the problem of poor supporting strength and easy breakage proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a steel brush spline shaft that is not easy to break, comprising a spline shaft main body, an adjusting sleeve is installed on the outside of the spline shaft main body, the left side of the adjusting sleeve is fixedly connected to a connecting end block, the outside of the connecting end block is installed with a planetary carrier, a spline nut is installed on the outside of the spline shaft main body and the adjusting sleeve, an outer ring is installed on the outside of the spline nut, a steel ball is installed between the spline nut and the outer ring, an outer rack is fixedly connected to the outer wall of the spline shaft main body, an inner rack is fixedly connected to the inner wall of the adjusting sleeve, a reinforcement groove is provided inside the inner rack, and a reinforcement rib is installed inside the reinforcement groove, the adjusting sleeve and the spline shaft main body are installed by a reinforcement screw, a positioning nut is provided on the outside of the reinforcement screw, the reinforcement screw passes through the reserved hole of the adjusting sleeve and the spline shaft main body and is installed and locked by the positioning nut.

[0007] As a further technical solution of the present invention, two groups of reinforcing screws are provided, and the reinforcing screws are cross-installed inside the spline shaft body.

[0008] As a further technical solution of the present invention, eight groups of the inner racks and eight groups of the outer racks are provided, and the inner racks and the outer racks are interlocked with each other.

[0009] As a further technical solution of the present invention, a mounting sleeve is fixedly connected to the right side of the planetary frame, mounting bolts are provided at the top and bottom ends of the mounting sleeve, and mounting holes are provided at the top and bottom ends of the connecting end block.

[0010] As a further technical solution of the present invention, the mounting sleeve is sleeved on the outside of the connecting end block, and the mounting bolt is embedded in the inside of the mounting hole to be threadedly connected.

[0011] As a further technical solution of the present invention, sealing baffles are installed on both sides of the outer ring, and a retainer is installed between the outer ring and the steel ball.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the steel brush spline shaft that is not easy to break not only realizes the function of enhancing the transmission support strength and realizing the function of being easy to disassemble, but also realizes the function of being easy to adjust the telescopic movement;

[0013] By providing an adjusting sleeve, a spline shaft body, an outer rack, a reinforcing screw, a reinforcing rib, a reinforcing groove and an inner rack, when the spline shaft body is telescopically adjusted, the inner rack and the outer rack are engaged and limited, and the hollow adjusting sleeve is provided with reinforcing ribs added to the inner rack to improve the overall supporting strength. The reinforcing screw passing through the cross can share the torsional force borne by the inner rack and the outer rack during transmission, thereby avoiding the situation that the adjusting sleeve breaks. This structure enhances the supporting strength of the spline shaft under the premise of telescopic adjustment, reduces the occurrence of breakage, and improves the durability.

[0014] By providing a planetary carrier, a mounting sleeve, a mounting hole, a mounting bolt and a connecting end block, the planetary carrier can be disassembled and removed from the adjusting shaft sleeve. When disassembling, the mounting bolt is removed from the inside of the mounting hole, and then the planetary carrier is pulled to the left. The mounting sleeve on the planetary carrier is removed from the connecting end block to achieve disassembly. This structure realizes the function of facilitating the rapid disassembly and replacement of a suitable planetary carrier, thereby improving the efficiency of disassembly and replacement.

[0015] By providing an adjusting sleeve, a positioning nut, a spline shaft body and a reinforcing screw, the spline shaft body can be adjusted to a usable length according to the transmission requirements. When adjusting, the reinforcing screw is first taken out from the inside of the spline shaft body, and then the adjusting sleeve outside the spline shaft body is moved. After the adjusting sleeve drives the planetary carrier to move to the appropriate length, the reinforcing screw is inserted into the inside of the adjusting sleeve and the spline shaft body through the reserved hole and fixed with the positioning nut. This structure realizes the function of facilitating telescopic adjustment of the spline shaft and improves the flexibility of the spline shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0017] Figure 2This is a side structural diagram of the adjusting sleeve of the present utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of the planet carrier of the present utility model;

[0019] Figure 4 It is a schematic diagram of the front cross-sectional structure of the spline nut of the present utility model.

[0020] In the figure: 1. Planetary carrier; 2. Mounting sleeve; 3. Adjusting sleeve; 4. Spline nut; 5. Positioning nut; 6. Spline shaft body; 7. Outer ring; 8. Steel ball; 9. Outer rack; 10. Sealing baffle; 11. Mounting hole; 12. Mounting bolt; 13. Connecting end block; 14. Reinforcement screw; 15. Reinforcement rib; 16. Reinforcement groove; 17. Inner rack. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 , the utility model provides an embodiment: a steel brush spline shaft that is not easy to break, including a spline shaft body 6, an adjusting sleeve 3 is installed on the outside of the spline shaft body 6, the left side of the adjusting sleeve 3 is fixedly connected to the left side of the adjusting sleeve 3 with a connecting end block 13, the outside of the connecting end block 13 is installed with a planetary carrier 1, the outside of the spline shaft body 6 and the adjusting sleeve 3 are both installed with a spline nut 4, the outside of the spline nut 4 is installed with an outer ring 7, a steel ball 8 is installed between the spline nut 4 and the outer ring 7, an outer rack 9 is fixedly connected to the outer wall of the spline shaft body 6, an inner rack 17 is fixedly connected to the inner wall of the adjusting sleeve 3, a reinforcement groove 16 is provided inside the inner rack 17, and a reinforcing rib 15 is installed inside the reinforcement groove 16, and the adjusting sleeve 3 and the spline shaft body 6 are installed by a reinforcing screw 14;

[0023] There are two sets of reinforcing screws 14, which are cross-mounted inside the spline shaft body 6. There are eight sets of inner racks 17 and outer racks 9, which are interlocked with each other.

[0024] Specifically, if Figure 1 and Figure 3As shown, when the spline shaft body 6 is telescopically adjusted, the inner rack 17 and the outer rack 9 are engaged and limited, and the internal hollow adjustment sleeve 3 improves the overall supporting strength by adding reinforcing ribs 15 in the inner rack 17. The cross-penetrating reinforcement screw 14 can share the torque borne by the inner rack 17 and the outer rack 9 during transmission, thereby avoiding the adjustment sleeve 3 from breaking.

[0025] The right side of the planet carrier 1 is fixedly connected to a mounting sleeve 2, with mounting bolts 12 provided at the top and bottom of the mounting sleeve 2. The top and bottom of the connecting end block 13 are provided with mounting holes 11. The mounting sleeve 2 is sleeved on the outside of the connecting end block 13, and the mounting bolts 12 are embedded in the inside of the mounting holes 11 and are threadedly connected.

[0026] Specifically, if Figure 1 and Figure 2 As shown, the planet carrier 1 can be removed from the adjusting sleeve 3. When removing, the mounting bolt 12 is removed from the inside of the mounting hole 11, and then the planet carrier 1 is pulled to the left. The mounting sleeve 2 on the planet carrier 1 is removed from the connecting end block 13 to achieve disassembly, which realizes the function of facilitating and quickly removing the appropriate planet carrier 1.

[0027] A positioning nut 5 is provided on the outside of the reinforcing screw 14. The reinforcing screw 14 passes through the reserved holes of the adjusting sleeve 3 and the spline shaft body 6 and is installed and locked by the positioning nut 5. Sealing baffles 10 are installed on both sides of the outer ring 7, and a retainer is installed between the outer ring 7 and the steel ball 8;

[0028] Specifically, if Figure 1 and Figure 4 As shown, the spline shaft body 6 can be adjusted to its length according to the transmission requirements. When adjusting, first remove the reinforcing screw 14 from the inside of the spline shaft body 6, and then move the adjusting sleeve 3 outside the spline shaft body 6. After the adjusting sleeve 3 drives the planetary carrier 1 to move to the appropriate length, insert the reinforcing screw 14 into the inside of the adjusting sleeve 3 and the spline shaft body 6 through the reserved hole and fix it with the positioning nut 5.

[0029] Working principle: When the utility model is in use, the spline shaft body 6 is connected to the transmission equipment. The spline shaft body 6 can be adjusted to the length of use according to the needs of the transmission. When adjusting, the reinforcing screw 14 is first taken out from the inside of the spline shaft body 6, and then the adjusting sleeve 3 outside the spline shaft body 6 is moved. After the adjusting sleeve 3 drives the planetary carrier 1 to move to the appropriate length, the reinforcing screw 14 is inserted into the inside of the adjusting sleeve 3 and the spline shaft body 6 through the reserved hole and fixed with the positioning nut 5. When the spline shaft body 6 is telescopically adjusted, the inner rack 17 and the outer rack 9 are engaged and limited, and the internal hollow adjustment The shaft sleeve 3 improves the overall supporting strength by adding reinforcing ribs 15 in the inner rack 17. The cross-penetrating reinforcing screw 14 can share the torsional force borne by the inner rack 17 and the outer rack 9 during transmission, thereby avoiding the adjustment shaft sleeve 3 from breaking. The planetary carrier 1 can be removed from the adjusting shaft sleeve 3. During disassembly, the mounting bolt 12 is removed from the inside of the mounting hole 11, and then the planetary carrier 1 is pulled to the left. The mounting sleeve 2 on the planetary carrier 1 can be removed from the connecting end block 13 to achieve disassembly. This structure realizes the function of facilitating and quickly disassembling and replacing a suitable planetary carrier 1, thereby improving the efficiency of disassembly and replacement.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A steel brush spline shaft that is not easy to break, comprising a spline shaft body (6), characterized in that: An adjusting sleeve (3) is installed on the outside of the spline shaft body (6), and a connecting end block (13) is fixedly connected to the left side of the adjusting sleeve (3). A planet carrier (1) is installed on the outside of the connecting end block (13). A spline nut (4) is installed on the outside of the spline shaft body (6) and the adjusting sleeve (3), and an outer ring (7) is installed on the outside of the spline nut (4). A steel ball (8) is installed between the spline nut (4) and the outer ring (7). An outer ring (7) is fixedly connected to the outer wall of the spline shaft body (6). A rack (9) is provided, and an inner rack (17) is fixedly connected to the inner wall of the adjusting sleeve (3), a reinforcement groove (16) is provided inside the inner rack (17), and a reinforcing rib (15) is installed inside the reinforcement groove (16), and the adjusting sleeve (3) and the spline shaft body (6) are installed through a reinforcing screw (14), and a positioning nut (5) is provided outside the reinforcing screw (14), and the reinforcing screw (14) passes through the reserved holes of the adjusting sleeve (3) and the spline shaft body (6) and is installed and locked through the positioning nut (5).

2. The unbreakable steel brush spline shaft according to claim 1, characterized in that: Two groups of the reinforcing screw rods (14) are provided, and the reinforcing screw rods (14) are cross-mounted inside the spline shaft body (6).

3. The unbreakable steel brush spline shaft according to claim 1, characterized in that: Eight groups of the inner racks (17) and the outer racks (9) are provided, and the inner racks (17) and the outer racks (9) are interlocked.

4. The unbreakable steel brush spline shaft according to claim 1, characterized in that: A mounting sleeve (2) is fixedly connected to the right side of the planetary frame (1), mounting bolts (12) are provided at the top and bottom ends of the mounting sleeve (2), and mounting holes (11) are provided at the top and bottom ends of the connecting end block (13).

5. The unbreakable steel brush spline shaft according to claim 4, characterized in that: The mounting sleeve (2) is sleeved on the outside of the connecting end block (13), and the mounting bolt (12) is embedded in the inside of the mounting hole (11) in a threaded connection.

6. The unbreakable steel brush spline shaft according to claim 1, characterized in that: Sealing baffles (10) are installed on both sides of the outer ring (7), and a retainer is installed between the outer ring (7) and the steel ball (8).

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