Pin shaft capable of eliminating clearance
By using pre-tightening mating structures of components such as outer tapered shaft, inner tapered shaft, bolts, etc. in the damper connection, the gap between the pin shaft and the hole is eliminated, the small displacement problem caused by the gap between the traditional connection is solved, and the articulation structure is reduced The cost and construction complexity achieve dual optimization of strength and cost.
Patent Information
- Application Number
- CN202411264847.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2024-12-13
AI Technical Summary
In the existing damper connection, traditional pin hole fit cannot completely eliminate the axial gap, resulting in small displacement and inability to work in actual work, and the articulated structure is expensive to manufacture and inconvenient to construct.
Using a clear gap-reducing pin structure consisting of an outer tapered shaft, an inner tapered shaft, a bolt, a node plate and a connector, the gap between the pin shaft and the hole is eliminated by pre-tightening, and the interaction force between the nut and the disc spring is used to make the The inner cone moves inward axially, the tapered surface is tightly matched to eliminate the gap, and the gap between the node plate is eliminated by the cooperation of the tightening sleeve and the nut.
Without reducing the connection strength of traditional pin holes, the construction and production costs of the articulated structure are reduced, the maintenance and loading and unloading process is simplified, the construction application limitations of the articulated structure are avoided, and the widespread application in various environments is achieved.
Smart Images
Figure CN119122901A_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a connecting pin shaft structure, belongs to the technical field of damper connection, and particularly relates to a pin shaft capable of eliminating clearance. Background Art
[0002] There are some problems with the connection of the damper in the prior art:
[0003] 1. Currently, the application of viscous dampers in engineering is mostly pin-hole connection or hinged connection. In order to facilitate loading and unloading, the pin-hole connection is designed as a clearance fit, and there are holes in multiple positions between the pin shaft and the damper and the node plate. The traditional pin-hole fit cannot completely eliminate the gap. Therefore, the product will have axial idle stroke in actual work, and the axial clearance varies according to the industry design and fit conditions. As a result, the viscous damper will not work at a small displacement during actual work, affecting the product output performance.
[0004] 2. In the hinged structure connection, the overall strength is limited by the weakest connection part. First, in order to increase the strength of the weak structural part, the hinged structure is too large and the manufacturing cost is high; second, when the overall structure is too large, it is restricted by the installation conditions at the construction site and this solution cannot be adopted. In addition, the manufacturing and accessories costs of the hinged structure are much greater than those of the pin-hole connection.
[0005] Therefore, it is imperative to develop connection products that can eliminate axial clearance and can be widely used in various environments. Summary of the invention
[0006] Purpose of the invention: To provide a pin shaft capable of eliminating clearance, which is composed of a plurality of components and can eliminate the clearance between the pin shaft and a plurality of holes through a pre-tightening fit in the structure, thereby solving the above-mentioned problems.
[0007] Technical solution: A clearance-eliminating pin shaft comprises: an outer tapered shaft, an inner tapered shaft, a bolt, a node plate and a connector; the node plate and the connector are provided with mounting holes for mounting the outer tapered shaft; the connector is located in the node plate, and the outer tapered shaft is simultaneously sleeved with the mounting holes on the node plate and the connector;
[0008] The outer tapered shaft has a tapered hole adapted to the inner tapered shaft, the inner tapered shaft is installed in the tapered hole in the outer tapered shaft, the bolt passes from one side of the inner tapered shaft to the other side and uses a first nut to fix the inner tapered shaft in the outer tapered shaft, and the outer tapered shaft is fixedly connected to the node plate and the connecting head.
[0009] In a further embodiment, a first tension sleeve and a second tension sleeve are provided between the outer tapered shaft and the mounting hole of the node plate, and the first tension sleeve and the second tension sleeve are respectively installed at the two mounting holes of the node plate and the steps on both sides of the outer tapered shaft.
[0010] In a further embodiment, a first round nut is provided on the outer side of the inner tapered shaft, and the first round nut is screwed to the outer side of the inner tapered shaft and is located on one side of the node plate;
[0011] A second round nut is provided on the other side of the stud, and the second round nut is screwed to the other side of the stud and is located on the other side of the gusset plate.
[0012] In a further embodiment, a disc spring and a first spacer are provided between the first nut and the second round nut.
[0013] A second cushion block is provided between the bolt and the inner tapered shaft.
[0014] In a further embodiment, the gap-eliminating pin shaft includes a gap-eliminating method, which includes first tightening the first nut, compressing the disc spring, pushing the first pad to compress the outer tapered shaft, and interacting with the bolt to move the inner tapered shaft inward, and expanding the outer tapered shaft through the conical surface, thereby tightly fitting with the mounting hole of the connecting head, thereby eliminating the gap there; and then tightening the first round nut and the second round nut on both sides to compress and expand the first tensioning sleeve and the second tensioning sleeve respectively, thereby tightly fitting with the mounting hole of the node plate, thereby eliminating the gap there.
[0015] In a further embodiment, the outer tapered shaft 6 consists of two identical halves.
[0016] In a further embodiment, when the gap is 0 during installation, the distance between the outer conical shaft and the connector is increased to facilitate installation; when the gap is made positive by the inner conical shaft, the gap between the outer conical shaft and the connector is eliminated.
[0017] In a further embodiment, when the connection head and the node plate are subjected to force, the outer cone sleeve is subjected to a force in the direction of F. After being transmitted to the inner cone shaft, the force F is decomposed into a force Fa and a force Fb; therefore, in the vertical direction:
[0018] Fa=F*cosb
[0019] Fb=F*sina
[0020] Where b is the angle between the force Fa and the force F, and a is the angle between the force Fb and the force F;
[0021] a is also the inclination angle of the cone surface of the inner cone axis and the outer cone axis;
[0022] The force Fa intersects with the direct force F. Since the difference is very small by controlling the inclination angles of the inner and outer cone shafts, the force F can be transmitted more effectively. At the same time, the horizontal force Fb finally acts on the threads of the first round nut and the second round nut.
[0023] The present invention has the following beneficial effects:
[0024] 1. The present invention adopts a new pin-hole connection structure, which avoids the disadvantages of two common structures currently on the market. It can avoid the construction applicability limitations of the hinged structure without substantially reducing the strength of the traditional pin-hole connection structure.
[0025] 2. Compared with the hinged structure, the production cost and construction cost are greatly reduced. At present, the wall width installed on the construction site is generally 200mm thick. The hinged structure with a larger structure has to require changes in the construction plan, increase the wall thickness, increase the node plate size, etc., and the gap-eliminating pin in this solution completely avoids this situation.
[0026] 3. Easy maintenance and simple assembly and disassembly. Compared with the traditional pin-hole connected damper, it is often designed with clearance fit for easy disassembly, which is contrary to the ultimate design concept of product performance. Compared with the connection method of the hinged structure, it avoids the labor of disassembling the bolts. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a cross-sectional view of the present invention.
[0028] Figure 2 It is a schematic diagram of the present invention.
[0029] Figure 3 It is a force diagram of the outer cone sleeve of the present invention.
[0030] Figure numerals: first nut 1, disc spring 2, first spacer 3, second round nut 4, first tensioning sleeve 5, outer tapered shaft 6, inner tapered shaft 7, second tensioning sleeve 8, first round nut 9, second gasket 10, screw 11, node plate 12, connector 13, gap 14. DETAILED DESCRIPTION
[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] A clearance-eliminating pin, such as Figure 1 and Figure 2 As shown, it includes: a first nut 1, a disc spring 2, a first spacer 3, a second round nut 4, a first tensioning sleeve 5, an outer tapered shaft 6, an inner tapered shaft 7, a second tensioning sleeve 8, a first round nut 9, a second gasket 10, a screw rod 11, a node plate 12, a connector 13, and a gap 14.
[0033] In one embodiment, the installation steps of the present invention are: first, place the inner tapered shaft 7 into the outer tapered shaft 6, then pass the outer tapered shaft 6 through the mounting holes of the node plate 12 and the connector 13 in sequence, and then install the first tension sleeve 5 and the second tension sleeve 8 into the steps on both sides of the outer tapered shaft 6, and insert them into the mounting hole of the node plate 12. Then place the second gasket 10 on the bolt, pass the bolt 1 through the inner tapered shaft 7, and then install the second round nut 4, the first spacer 3, the disc spring 2, and the first nut 1 on the left side of the bolt in sequence. Install the first round nut 9 on the right side of the inner tapered sleeve. At this point, all components are installed.
[0034] In one embodiment, the action relationship for eliminating the gap 14 is as follows: first tighten the first nut 1, the first nut 1 compresses the disc spring 2, pushes the first gasket 3 to compress the outer tapered shaft 6, and through the interaction force with the bolt, the inner tapered shaft 7 moves inward, and the outer tapered shaft 6 is expanded through the conical surface, and then tightly fits with the mounting hole of the connecting head 13, thereby eliminating the gap 14 there; then, by tightening the first round nut 9 and the second round nut 4 on both sides, the first tensioning sleeve 5 and the second tensioning sleeve 8 are respectively compressed and expanded, and then tightly fit with the mounting hole of the node plate 12, thereby eliminating the gap 14 there.
[0035] In one embodiment, the outer cone shaft 6 is composed of two identical halves, such as Figure 2 As shown, when the gap 14 is 0 during installation, the distance between the outer cone shaft 6 and the connector 13 increases, which facilitates installation. When the gap 14 is made positive by the inner cone shaft 7, the gap 14 between the outer cone shaft 6 and the connector 13 is eliminated.
[0036] In one embodiment, when the connector 13 and the node plate 14 are subjected to force, the outer cone sleeve 6 is subjected to a force in the direction of F. After being transmitted to the inner cone shaft 7, the force F is decomposed into a force Fa and a force Fb; therefore, in the vertical direction:
[0037] Fa=F*cosb
[0038] Fb=F*sina
[0039] Where b is the angle between the force Fa and the force F, and a is the angle between the force Fb and the force F;
[0040] a is also the inclination angle of the cone surface of the inner cone axis 7 and the outer cone axis 6;
[0041] The force Fa intersects with the direct force F. Since the difference is very small by controlling the inclination angles of the inner tapered shaft 7 and the outer tapered shaft 6, the force F can be transmitted more effectively. At the same time, the horizontal force Fb ultimately acts on the threads of the first round nut 9 and the second round nut 4.
[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.
Claims
1. A clearance-eliminating pin shaft, characterized in that: include: An outer tapered shaft, an inner tapered shaft, a bolt, a node plate and a connector; the node plate and the connector are provided with mounting holes for mounting the outer tapered shaft; the connector is located in the node plate, and the outer tapered shaft is simultaneously sleeved with the mounting holes on the node plate and the connector; The outer tapered shaft has a tapered hole adapted to the inner tapered shaft, the inner tapered shaft is installed in the tapered hole in the outer tapered shaft, the bolt passes from one side of the inner tapered shaft to the other side and uses a first nut to fix the inner tapered shaft in the outer tapered shaft, and the outer tapered shaft is fixedly connected to the node plate and the connecting head.
2. The clearance-eliminating pin according to claim 1, characterized in that: A first tension sleeve and a second tension sleeve are provided between the outer tapered shaft and the mounting hole of the node plate. The first tension sleeve and the second tension sleeve are respectively mounted on the two mounting holes of the node plate and the steps on both sides of the outer tapered shaft.
3. The clearance-eliminating pin according to claim 2, characterized in that: A first round nut is provided on the outer side of the inner tapered shaft, and the first round nut is screwed to the outer side of the inner tapered shaft and is located on one side of the node plate; A second round nut is provided on the other side of the stud, and the second round nut is screwed to the other side of the stud and is located on the other side of the gusset plate.
4. The clearance-eliminating pin according to claim 3, characterized in that: A disc spring and a first cushion block are provided between the first nut and the second round nut. A second cushion block is provided between the bolt and the inner tapered shaft.
5. The clearance-eliminating pin according to claim 4, characterized in that: The clearance-eliminating pin shaft includes a clearance-eliminating method, which includes first tightening the first nut, compressing the disc spring, pushing the first pad to compress the outer tapered shaft, and interacting with the bolt to make the inner tapered shaft move inward, expanding the outer tapered shaft through the tapered surface, and then tightly fitting with the mounting hole of the connector, thereby eliminating the clearance there; then, by tightening the first round nut and the second round nut on both sides, the first tensioning sleeve and the second tensioning sleeve are respectively compressed and expanded, and then tightly fitting with the mounting hole of the node plate, thereby eliminating the clearance there.
6. The clearance-eliminating pin according to claim 5, characterized in that: The outer conical shaft 6 consists of two identical halves.
7. The clearance-eliminating pin according to claim 5, characterized in that: When the gap is 0 during installation, the distance between the outer tapered shaft and the connector is increased, making installation easier; when the gap is made positive by the inner tapered shaft, the gap between the outer tapered shaft and the connector is eliminated.
8. The clearance-eliminating pin according to claim 5, characterized in that: When the connection head and the node plate are subjected to force, the outer cone sleeve is subjected to a force in the direction of F. After being transmitted to the inner cone shaft, the force F is decomposed into a force Fa and a force Fb; therefore, in the vertical direction: Fa=F*cosb Fb=F*sina Where b is the angle between the force Fa and the force F, and a is the angle between the force Fb and the force F; a is also the inclination angle of the cone surface of the inner cone axis and the outer cone axis; The force Fa intersects with the direct force F. Since the difference is very small by controlling the inclination angles of the inner and outer cone shafts, the force F can be transmitted more effectively. At the same time, the horizontal force Fb finally acts on the threads of the first round nut and the second round nut.