Novel step shaft, shaft assembly and step chain

Abstract

The utility model relates to the technical field of step chain assemblies, in particular to a novel step shaft and a shaft assembly. According to the technical scheme, the step shaft comprises a step shaft body, the position of a center shaft of the step shaft body is of a hollow structure, step combination connecting shafts with the same size are inserted into and combined with the two sides of the step shaft body, and fastening and positioning combination holes are formed between the step shaft body and the step combination connecting shafts. The matching surfaces between the step shaft main body and the step combination connecting shaft are connected together in a bonding manner, the step shaft main body and the step combination connecting shaft form a step shaft structure, and an elastic cylindrical pin is arranged in the fastening positioning combination hole. The step shaft has the advantages that the step shaft is produced in a combined mode, the whole step shaft can be spliced and matched in different specifications according to requirements during use, and therefore the production and machining requirements of step chains in different specifications can be met, and the flexibility and the convenience are higher during use.

Description

Technical Field

[0001] The utility model relates to the technical field of step chain components, in particular to a novel step shaft and a shaft component. Background Art

[0002] When producing existing ladder chains, integrated ladder shafts are usually combined and connected, which results in high production costs. In addition, when producing ladder shafts of different specifications, they need to be processed in conjunction with ladder shafts of different specifications. The ladder shafts have poor flexibility and poor commonality. When the overall production is combined, the ladder shafts are usually fastened with clamps, which results in poor stability during assembly, difficulty in disassembly and assembly, low disassembly and assembly efficiency, poor convenience in later maintenance, and relatively high maintenance costs. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of ladder shaft, which is produced in the form of a combination, so that the ladder shaft as a whole can be spliced ​​and matched with different specifications as needed when in use, thereby meeting the production and processing requirements of ladder chains of different specifications, and has greater flexibility and convenience in use, and the cost of producing ladder chains of different specifications is lower. The ladder shaft assembly is more convenient to install and combine through the clamping ring spliced ​​together by the plastic protective sleeve during use, and the structural stability of the combined position is better, the convenience during disassembly and assembly is greater, the overall combination efficiency is higher, and the convenience during later maintenance is greater.

[0004] The technical solution of the utility model is as follows:

[0005] A new type of step shaft, characterized in that it includes a step shaft body, the central axis position of the step shaft body is a hollow structure, a step combination connecting shaft of the same size is inserted and combined on both sides of the step shaft body, a fastening positioning combination hole is provided between the step shaft body and the step combination connecting shaft, the mating surfaces between the step shaft body and the step combination connecting shaft are connected together by bonding, the step shaft body and the step combination connecting shaft form a step shaft structure, and an elastic cylindrical pin is provided in the fastening positioning combination hole.

[0006] A new type of ladder shaft assembly is characterized in that: the outer side of the ladder shaft body is provided with a clamping assembly at the position of the fastening combination hole, the outer side of the ladder combination connecting shaft and the end face of the ladder shaft body in the length direction are provided with a wear-resistant bushing, the wear-resistant bushing is made of plastic material through injection molding, the wear-resistant bushing and the end face of the ladder shaft body in the length direction are matched together through a limit groove, the wear-resistant bushing is provided with a positioning hole and an oil filling hole, the clamping assembly is composed of two clamping half rings spliced ​​together, the inner side of the clamping half ring and the ladder shaft body are matched at the semi-cylindrical combination groove, the combination groove is provided with a avoidance limit groove, the outer side of the clamping half ring is provided with an anti-error marking matching groove, and the two clamping half rings are fastened together by bolts, spring washers and flat washers.

[0007] Furthermore, a precise sliding combination stabilizing structure is provided at the matching position between the step combination connecting shaft and the step shaft body.

[0008] Furthermore, conical combined guide surfaces are provided on both sides of the elastic cylindrical pin, the center position of the elastic cylindrical pin is a hollow structure, and one side of the hollow structure is provided with an elastic deformation safety groove that penetrates the inside and outside.

[0009] Furthermore, a combined chamfered structure for easy assembly is provided on the outer side of the limiting groove, and an oil filling guide groove is provided on the outer side of the oil filling hole.

[0010] Furthermore, the positioning hole and the oil filling hole are located at opposite positions on the cylindrical surface of the wear-resistant sleeve.

[0011] A ladder chain composed of a new type of ladder shaft is characterized in that: the two ends of the ladder shaft structure are respectively connected to the ladder chain body through special-shaped pin shafts, and the two ends of the ladder shaft structure are matched with the special-shaped pin shafts. Ladder chain stabilizing rollers are provided near the ladder chain body, and the two ends of the elastic cylindrical pin are located in the avoidance limit groove.

[0012] Beneficial effects of the utility model:

[0013] The utility model is produced in the form of a combination, so that the ladder shaft as a whole can be spliced ​​and matched with different specifications as needed during use, thereby being able to meet the production and processing requirements of ladder chains of different specifications, having greater flexibility and convenience during use, and lowering the cost of producing ladder chains of different specifications. The ladder shaft assembly is more convenient to install and assemble through the clamping ring spliced ​​together with the plastic protective sleeve during use, and the structural stability of the combined position is better, the convenience during assembly and disassembly is greater, the overall combination efficiency is higher, and the convenience during later maintenance is greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the step shaft of the utility model;

[0015] Figure 2 This is a front view of the wear-resistant sleeve in the present invention;

[0016] Figure 3 It is a cross-sectional schematic diagram of the wear-resistant sleeve in the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of the clamping assembly in the present utility model;

[0018] Figure 5 This is a schematic top view of the clamping assembly in the present invention;

[0019] Figure 6 It is a cross-sectional schematic diagram of the clamping half ring in the present utility model;

[0020] Figure 7 This is a schematic front view of the entire step chain of the present invention;

[0021] Figure 8 This is a schematic diagram of the overall top view of the step chain in the present invention;

[0022] Figure 9 It is a cross-sectional schematic diagram of the EE position of the present utility model;

[0023] Figure 10 It is a cross-sectional schematic diagram of the FF position of the present invention;

[0024] In the figure: 1. Step chain body, 2. Step chain stabilizing roller, 3. Wear-resistant bushing, 4. Clamping assembly, 5. Step shaft structure, 6. Elastic cylindrical pin, 31. Limiting groove, 32. Positioning hole, 33. Oil filling hole, 41. Clamping half ring, 42. Bolt, 43. Spring washer, 44. Flat washer, 45. Avoiding limiting groove, 46. Anti-error mark matching groove, 51. Step shaft body, 52. Step combination connecting shaft, 53. Fastening positioning combination hole. DETAILED DESCRIPTION

[0025] like Figure 1As shown, the step shaft structure 5 comprises a hollow structure at the center axis of the step shaft body 51. A step assembly connecting shaft 52 of the same size is inserted and assembled on both sides of the step shaft body 51, creating a symmetrical structure. A fixing hole 53 is provided between the step shaft body 51 and the step assembly connecting shaft 52, which is used to secure the connection during the subsequent assembly of the step chain. The mating surfaces between the step shaft body 51 and the step assembly connecting shaft 52 are bonded together to ensure a tight fit. The step shaft structure 5, which is composed of the step shaft body 51 and the step assembly connecting shaft 52, is provided with an elastic cylindrical pin 6 within the fixing hole 53, providing greater flexibility during assembly and disassembly, and reducing damage to the fixing points during assembly and disassembly. This allows for smooth assembly and disassembly. The structure is manufactured and processed in a detachable assembly manner, allowing it to be used with step chains of various specifications.

[0026] A novel step shaft assembly, characterized in that: a clamping assembly 4 is provided on the outer side of the step shaft body 51 at the position of the fastening combination hole 53, which can ensure better fitting and fastening of the step shaft body structure. A wear-resistant bushing 3 is provided on the outer side of the step combination connecting shaft 52 and at the end face fitting position in the longitudinal direction of the step shaft body 51, and the fitting position has a reliable wear-resistant effect during use. The wear-resistant bushing 3 is made of plastic material through injection molding. The wear-resistant bushing 3 and the end face position in the longitudinal direction of the step shaft body 51 are fitted together through a limiting groove 31. The wear-resistant bushing 3 is provided with a positioning hole 32 and an oiling hole 33, and can be regularly refueled to increase the wear resistance and service life of the bushing. The clamping assembly 4 comprises two joined clamping half-rings 41. The inner sides of the clamping half-rings 41 form a semi-cylindrical groove that mates with the step shaft body 51. The groove is provided with a position-avoiding limit groove 45. The outer sides of the clamping half-rings 41 are provided with a misalignment-marking groove 46. The two clamping half-rings 41 are fastened together by bolts 42, spring washers 43, and flat washers 44. This assembly provides enhanced stability, reliable shock resistance, and increased durability and safety during use. By adopting a combined production method, the step shaft assembly can be assembled and matched to different specifications as needed, thereby meeting the production and processing requirements of step chains of varying specifications. This provides greater flexibility and convenience, and reduces the cost of producing step chains of varying specifications. The clamping ring, formed by the step shaft assembly being assembled through the plastic protective sleeve, facilitates assembly and assembly, improves structural stability, facilitates assembly and disassembly, increases overall assembly efficiency, and enhances ease of maintenance.

[0027] Preferably, the matching position of the step combination connecting shaft 52 and the step shaft body 51 is provided with a precise sliding combination stabilizing structure to ensure better combination stability and higher combination accuracy during matching, and the connection strength during matching can also be further improved.

[0028] Preferably, conical combined guide surfaces are provided on both sides of the elastic cylindrical pin 6, and the center position of the elastic cylindrical pin 6 is a hollow structure. One side of the hollow structure is provided with an elastic deformation safety groove that penetrates the inside and outside, which is more convenient when assembling, and the processing cost of this structure during production is also relatively low.

[0029] Preferably, the outer side of the limiting groove 31 is provided with a combined chamfer structure for easy assembly, and the outer side of the oil filling hole 33 is provided with an oil filling guide groove, which is more convenient during fitting and smoother during oil filling.

[0030] Preferably, the positioning hole 32 and the oil filling hole 33 are located at opposite positions on the cylindrical surface of the wear-resistant sleeve 3, so that they have less impact on the strength of the main structure and better durability during use.

[0031] A ladder chain composed of a new type of ladder shaft, characterized in that: the two ends of the ladder shaft structure 5 are respectively connected to the ladder chain body 1 through special-shaped pins, and the two ends of the ladder shaft structure 5 are matched with the special-shaped pins, and ladder chain stabilizing rollers 2 are provided near the position of the ladder chain body 1, and the two ends of the elastic cylindrical pin 6 are located in the avoidance limit groove 45. When producing ladder chains of different sizes, production and processing can be carried out by adjusting the ladder shaft, and the overall production and processing operation is more convenient. The disassembly and assembly steps during production and use are: loosen the clamping ring component → knock out the elastic cylindrical pin → push the ladder shaft to one side of the ladder chain → misalign the ladder shaft with the special-shaped pin of the ladder chain on the other side → take out and replace the ladder shaft and shaft assembly. Maintenance operations are more convenient, and the combination efficiency during production is also higher.

[0032] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or substitutions can be made without departing from the principles described in the present invention. These improvements or substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A new type of stepped shaft, characterized by: The invention comprises a step shaft body (51), wherein the central axis position of the step shaft body (51) is a hollow structure, a step combination connecting shaft (52) of the same size is inserted and assembled on both sides of the step shaft body (51), a fastening position combination hole (53) is provided between the step shaft body (51) and the step combination connecting shaft (52), and the mating surfaces between the step shaft body (51) and the step combination connecting shaft (52) are connected together by bonding, and the step shaft body (51) and the step combination connecting shaft (52) form a step shaft structure (5), and an elastic cylindrical pin (6) is provided in the fastening position combination hole (53).

2. A novel step shaft assembly, comprising the novel step shaft according to claim 1, characterized in that: The outer side of the step shaft body (51) is provided with a clamping assembly (4) at the position of the fastening positioning combination hole (53), and the outer side of the step combination connecting shaft (52) is provided with a wear-resistant sleeve (3) at the position of the end face in the longitudinal direction of the step shaft body (51). The wear-resistant sleeve (3) is made of plastic material by injection molding. The wear-resistant sleeve (3) is matched with the end face position in the longitudinal direction of the step shaft body (51) through a limiting groove (31). A positioning hole (32) and an oil filling hole (33) are provided. The clamping assembly (4) is composed of two clamping half rings (41) spliced ​​together. The inner side of the clamping half ring (41) is matched with the step shaft body (51) to form a semi-cylindrical combination groove. The combination groove is provided with a position-avoiding limit groove (55). The outer side of the clamping half ring (41) is provided with an anti-error mark matching groove (56). The two clamping half rings (41) are fastened together by a bolt (42) matched with a spring washer (43) and a flat washer (44).

3. The novel step shaft according to claim 1, characterized in that: A precise sliding combination stabilizing structure is provided at the matching position between the step combination connecting shaft (52) and the step shaft body (51).

4. The novel step shaft according to claim 1, characterized in that: Conical combined guide surfaces are provided on both sides of the elastic cylindrical pin (6); the center of the elastic cylindrical pin (6) is a hollow structure; and one side of the hollow structure is provided with an elastic deformation safety groove that penetrates the inside and outside.

5. The novel step shaft assembly according to claim 2, characterized in that: A combined chamfered structure for easy assembly is provided on the outer side of the limiting groove (31), and an oil injection guide groove is provided on the outer side of the oil injection hole (33).

6. A novel step shaft assembly according to claim 2, characterized in that: The positioning hole (32) and the oil injection hole (33) are located at opposite positions on the cylindrical surface of the wear-resistant sleeve (3).

7. A step chain composed of a novel step shaft assembly, comprising the novel step shaft assembly according to claim 2, characterized in that: The two ends of the step shaft structure (5) are connected to the step chain body (1) via special-shaped pins, respectively. The special-shaped pins matched at the two ends of the step shaft structure (5) are provided with step chain stabilizing rollers (2) near the step chain body (1), and the two ends of the elastic cylindrical pin (6) are located in the avoidance limit groove (55).

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