Novel step shaft and shaft assembly
The new step shaft produced in combination uses hollow structure and adhesive connections, elastic cylindrical pins and plastic wear-resistant shaft sleeves to solve the problems of high cost and poor flexibility in the production of step chains, and realizes flexible splicing and efficient combinations, reducing the need for lowering maintenance costs.
Patent Information
- Application Number
- CN202411579594.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2024-12-27
AI Technical Summary
During the production of existing step chains, the cost of step shafts is high, the flexibility of use is poor, the processing is difficult when producing different specifications, the fastening combination is unstable, the disassembly and assembly efficiency is low, and the maintenance cost is high.
The new step shaft produced in a combined form uses a combination of hollow structure and a combined connection shaft, using adhesive connections and elastic cylindrical pins, combined with plastic wear-resistant shaft sleeves and clamping rings to achieve splicing and stable connections of different specifications.
It improves the flexibility and convenience of the use of step shafts, reduces the production cost of step chains of different specifications, enhances the stability of the combined position and the convenience of disassembly and assembly, and improves the overall combination efficiency and maintenance convenience.
Smart Images
Figure CN119196248A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of step chain components, and in particular to a novel step shaft and shaft component. Background Art
[0002] When existing step chains are produced, they are usually connected in combination with one-piece step shafts, which results in relatively high production costs. In addition, when producing step shafts of different specifications, they need to be processed in conjunction with step shafts of different specifications. The step shafts have relatively poor flexibility in use and poor commonality. When the overall production is combined, the step shafts are usually fastened with clamps, resulting in relatively poor stability during assembly, great difficulty in disassembly and assembly, low disassembly and assembly efficiency, poor convenience during later maintenance, and relatively high maintenance costs. Summary of the invention
[0003] The purpose of the present invention is to provide a new type of step shaft, which is produced in a combined form so that the step shaft as a whole can be spliced and matched in different specifications according to needs when in use, thereby being able to meet the production and processing requirements of step chains of different specifications, having greater flexibility and convenience when in use, and lowering the cost of producing step chains of different specifications. The step shaft assembly is more convenient to install and assemble through a clamping ring spliced together with a 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 present invention is as follows: 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 and 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 and positioning combination hole.
[0005] A new type of step shaft assembly, characterized in that: a clamping assembly is provided on the outer side of the step shaft body at the position of the fastening positioning combination hole, a wear-resistant sleeve is provided at the outer side of the step combination connecting shaft and the end face matching position in the length direction of the step shaft body, the wear-resistant sleeve is made of plastic material through injection molding, the wear-resistant sleeve and the end face position in the length direction of the step shaft body are matched together through a limiting groove, the wear-resistant sleeve 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 matching position of the step shaft body are a semi-cylindrical combination groove, the combination groove is provided with a avoidance limiting 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.
[0006] Furthermore, a precise sliding combination stabilizing structure is provided at the matching position between the step combination connecting shaft and the step shaft body.
[0007] 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 the outside.
[0008] Furthermore, a combined chamfered structure for facilitating assembly is provided on the outer side of the limiting groove, and an oil injection guide groove is provided on the outer side of the oil injection hole.
[0009] Furthermore, the positioning hole and the oil injection hole are located at opposite positions on the cylindrical surface of the wear-resistant sleeve.
[0010] A ladder chain composed of a new type of ladder shaft, characterized in that: the two ends of the ladder shaft structure are respectively connected to the ladder chain body through special-shaped pins, and the two ends of the ladder shaft structure are matched with the special-shaped pins, and 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.
[0011] Beneficial effects of the present invention: The present invention is produced in a combined form, 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, having greater flexibility and convenience when in use, and lowering the cost of producing step chains of different specifications. The ladder shaft assembly is more convenient to install and assemble through a clamping ring spliced together with a 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
[0012] Figure 1It is a cross-sectional schematic diagram of the step shaft of the present invention; Figure 2 It is a front schematic diagram of the wear-resistant sleeve in the present invention; Figure 3 It is a cross-sectional schematic diagram of the wear-resistant sleeve in the present invention; Figure 4 is a cross-sectional schematic diagram of the clamping assembly in the present invention; Figure 5 is a schematic top view of the clamping assembly in the present invention; Figure 6 It is a cross-sectional schematic diagram of the clamping half ring in the present invention; Figure 7 It is an overall front schematic diagram of the step chain in the present invention; Figure 8 It is a schematic diagram of the overall top view of the step chain in the present invention; Fig. 9 It is a cross-sectional schematic diagram of the EE position of the present invention; Fig.10 It is a cross-sectional schematic diagram of the FF position of the present invention; 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. limit groove, 32. positioning hole, 33. oil filling hole, 41. clamping half ring, 42. bolt, 43. spring washer, 44. flat washer, 45. avoidance limit groove, 46. anti-mistake mark matching groove, 51. step shaft body, 52. step combination connecting shaft, 53. fastening positioning combination hole. DETAILED DESCRIPTION
[0013] like Figure 1 As shown, it includes a step shaft body 51, the central axis position of the step shaft body 51 is a hollow structure, and a step combination connecting shaft 52 of the same size is inserted and assembled on both sides of the step shaft body 51, so that the structures on both sides have a symmetrical effect. A fastening and positioning combination hole 53 is provided between the step shaft body 51 and the step combination connecting shaft 52, and a fastening and matching connection is performed through this position when the overall assembly of the step chain is performed later. The matching surfaces between the step shaft body 51 and the step combination connecting shaft 52 are connected together by bonding to ensure better tightness of the matching position. 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 arranged in the fastening and positioning combination hole 53, which has better flexibility when matching, better convenience when disassembling, and less damage to the fastening and combining position during the disassembly process. The disassembly and assembly are smoother. It is produced and processed in a detachable combination manner, and can meet the matching use of step chains of various specifications when used.
[0014] 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 sleeve 3 is provided on the outer side of the step combination connecting shaft 52 and the end face matching position in the length direction of the step shaft body 51, and the matching position has a reliable wear-resistant effect during use. The wear-resistant sleeve 3 is made of plastic material by injection molding, and the wear-resistant sleeve 3 is matched with the end face position in the length direction of the step shaft body 51 through a limiting groove 31. The wear-resistant sleeve 3 is provided with a positioning hole 32 and an oil filling hole 33, and oil can be regularly refueled to increase the wear resistance and service life of the sleeve. The clamping assembly 4 is composed of two clamping half rings 41 spliced together, the inner side of the clamping half ring 41 and the step shaft body 51 are in a semi-cylindrical combination groove, the combination groove is provided with a position-avoiding limit groove 45, and the outer side of the clamping half ring 41 is provided with an anti-mistake mark matching groove 46, and the two clamping half rings 41 are fastened together by bolts 42, spring pads 43 and flat washers 44, and the stability after the combination is better, and it has a reliable anti-seismic effect when in use, and the durability and safety during use are higher. By adopting the combined form of production, the step shaft as a whole can be spliced and matched with different specifications according to needs when in use, so as to meet the production and processing requirements of step chains of different specifications, and the flexibility and convenience in use are stronger, and the cost of producing step chains of different specifications is lower. The clamping ring formed by the step shaft assembly through the plastic protective sleeve is more convenient to install and assemble when in use, and the structural stability of the combined position is better, the convenience during disassembly and assembly is stronger, the overall combination efficiency is higher, and the convenience during later maintenance is stronger.
[0015] Preferably, a precise sliding combination stabilizing structure is provided at the mating position between the step combination connecting shaft 52 and the step shaft body 51, so as to ensure better combination stability and higher combination accuracy during mating, and further improve the connection strength during mating.
[0016] 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 the outside, which is more convenient when assembling, and the processing cost of this structure during production is also relatively low.
[0017] Preferably, a combined chamfered structure is provided on the outer side of the limiting groove 31 for easy assembly, and an oil filling guide groove is provided on the outer side of the oil filling hole 33, which is more convenient during fitting and smoother during oil filling.
[0018] Preferably, 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, so that they have less influence on the strength of the main structure and better durability during use.
[0019] A step chain composed of a new type of step shaft, characterized in that: the two ends of the step shaft structure 5 are respectively connected to the step chain body 1 through special-shaped pins, and the two ends of the step shaft structure 5 are matched with the special-shaped pins, and the position close to the step chain body 1 is provided with a step chain stabilizing roller 2, and the two ends of the elastic cylindrical pin 6 are located in the avoidance limit groove 45. When producing step chains of different sizes, production and processing can be carried out by adjusting and matching the step shaft, and the overall production and processing operation is more convenient. The disassembly and assembly steps during production and use are as follows: loosen the clamping ring component → knock out the elastic cylindrical pin → push the step shaft to one side of the step chain → misalign the step shaft with the special-shaped pin of the step chain on the other side → take out and replace the step shaft and shaft assembly. The maintenance operation is more convenient, and the combination efficiency during production is also higher.
[0020] 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 of 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 and positioning combination hole (53) is provided between the step shaft body (51) and the step combination connecting shaft (52), 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 and positioning combination hole (53).
2. A novel step shaft assembly according to claim 1, characterized in that: A clamping assembly (4) is provided on the outside of the step shaft body (51) at the position of the fastening positioning combination hole (53); a wear-resistant sleeve (3) is provided on the outside of the step combination connecting shaft (52) at a position matching the end surface of the step shaft body (51) in the length direction; the wear-resistant sleeve (3) is made of plastic material by injection molding; the wear-resistant sleeve (3) and the end surface of the step shaft body (51) in the length direction are matched together through a limiting groove (31); A positioning hole (32) and an oil injection 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-mistake marking matching groove (56). The two clamping half rings (41) are fastened together by bolts (42) in combination with spring washers (43) and flat washers (44).
3. A 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. A 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; one side of the hollow structure is provided with an elastic deformation safety groove that penetrates the inside and the outside.
5. A 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 shaft sleeve (3).
7. The step chain composed of a novel step shaft assembly according to claim 2, characterized in that: The two ends of the step shaft structure (5) are respectively connected to the step chain body (1) via special-shaped pins, and step chain stabilizing rollers (2) are provided on the special-shaped pins matched at the two ends of the step shaft structure (5) near the step chain body (1), and the two ends of the elastic cylindrical pin (6) are located in the avoidance limit groove (55).