A single-line freight cableway grip with guide wings

Abstract

This utility model relates to the technical field of single-line freight cableway grippers, specifically providing a single-line freight cableway gripper with guide wings. The core structure of the device consists of a bent shaft, an outer gripper sleeve, a variable cross-section outer gripper, an adaptive inner gripper, and guide wings. The bent shaft adopts a design combining a straight shaft body and a bent section. The extended end of the bent section is provided with a first shaft hole to achieve hinge connection with the variable cross-section outer gripper. The outer gripper sleeve forms a rotating pair with the variable cross-section outer gripper through the second shaft hole of the bottom mounting base. The variable cross-section outer gripper adopts an arc-shaped cross-section gradient structure and forms a three-bar linkage with the bent shaft and the adaptive inner gripper through the first shaft body and the third shaft hole, respectively.

Description

Technical Field

[0001] This utility model belongs to the field of aerial cableway transportation technology, specifically relating to a single-line cable-holding device suitable for heavy-duty freight cableways in complex terrain, especially suitable for mining transportation systems with operating speed ≤2.5m / s and hourly transport capacity ≥150t. Background Technology

[0002] Existing single-line freight aerial ropeways require relatively flat tracks for their grippers, resulting in significant limitations in terrain adaptability for single-line freight aerial ropeway systems. With increasingly complex mine terrain, greater elevation differences, longer track lengths, and inevitable depressions and small negative angles, the load-bearing rope can easily jump off the support sheave under varying load conditions and the influence of external factors such as wind. The track support design incorporates a support and pressure sheave assembly to both support and compress the load-bearing traction wire rope under varying load conditions, preventing it from jumping off the support sheave. Currently, gravity-type grippers operate on a four-bar linkage principle, where the resistance as the grip passes through the pressure sheave cannot be too high. However, existing four-bar linkages present at least the following technical problems:

[0003] When traditional four-bar linkage cable grips pass through the -3° to -5° concave section, the aerodynamic lift causes a sudden increase in resistance, with the measured peak resistance reaching 850N.

[0004] The jaw wear rate is exponentially related to the throughput. When the throughput is >120t / h, the jaw life is less than 3 months.

[0005] The success rate of uncoupling within the station is affected by the guiding mechanism; the failure rate of uncoupling of the existing structure reaches 1.2% at speeds above 2.2 m / s. Utility Model Content

[0006] The purpose of this utility model is to provide a single-line freight cableway gripper with a guide wing, which can reduce the resistance when passing through the pressure sheave assembly, and at the same time does not affect the disengagement and attachment of the wire rope when entering and leaving the station, thus ensuring the smooth operation of the track within the station.

[0007] The embodiments of this utility model are implemented as follows:

[0008] A single-line freight cableway gripper with guide wings includes a bent shaft, an outer gripper sleeve, a variable cross-section outer gripper, an adaptive inner gripper, and guide wings. The bent shaft consists of a straight shaft body and a bent section fixed to one end of the straight shaft body. The bent section extends horizontally upward and biased towards the other end of the straight shaft body, and a through first shaft hole is provided at the extended end. The outer gripper sleeve is sleeved on the straight shaft body, and a mounting base is provided at the bottom of the sleeve, with a through second shaft hole provided on the mounting base.

[0009] The variable cross-section outer clamp is arc-shaped. One end of the variable cross-section outer clamp is connected to the outer clamp bushing through the second shaft pin. The middle part of the variable cross-section outer clamp is provided with a first shaft body, which passes through the first shaft hole and connects the variable cross-section outer clamp and the bent rod shaft. The other end of the variable cross-section outer clamp is provided with a through third shaft hole.

[0010] The adaptive internal clamp is connected at both ends to the first shaft hole and the third shaft hole respectively through the first shaft body and the third shaft;

[0011] The guide vanes are symmetrically arranged at both ends of the third shaft hole.

[0012] In a preferred embodiment of the present invention, the third shaft hole end of the above-mentioned variable cross-section outer clamp is provided with a wing root fixing seat, and an anti-loosening bolt is used to pass through the wing root fixing seat and the guide wing for fixing.

[0013] In a preferred embodiment of the present invention, the length of the third pin is greater than the through length of the third shaft hole. After the guide wing root with a stepped groove is fitted onto one end of the third pin, a bolt is used to fix it through the wing root fixing seat and the guide wing.

[0014] In a preferred embodiment of the present invention, the top, tip and bottom of the guide wing are curved surfaces, and a longitudinal guide groove is provided at the bottom. The aspect ratio of the curved guide part is 3:1-4:1, the radius of curvature of the leading edge is R=8-12mm, the thickness of the trailing edge is δ=2-3mm, and the depth of the longitudinal drag-reducing groove is h=1.5-2mm. The surface of the longitudinal guide groove has a lubricating layer.

[0015] In a preferred embodiment of the present invention, the carbon fiber reinforced nylon composite shell has a hexagonal honeycomb core layer inside and a polyurethane buffer layer covering the front edge.

[0016] In a preferred embodiment of this utility model, the clamping ends of the outer clamp and the inner clamp are provided with complementary involute jaws, the module m of the working surface of the jaws is 2-3, and the pressure angle α is 20°±1°.

[0017] In a preferred embodiment of this utility model, the tip circle diameter of the involute jaw is da=Φ35-Φ40mm, the root circle diameter is df=Φ30-Φ35mm, and the effective meshing length is L=50-60mm.

[0018] In a preferred embodiment of the present invention, the above-mentioned cable clamp further includes a sleeve sliding pair, which is sleeved on a linear shaft, and the outer clamping bushing is fixed to the sleeve sliding pair by screws.

[0019] In a preferred embodiment of the present invention, the above-mentioned cable clamp further includes a fixing nut, which is assembled at the tail end of the linear shaft and limits the sleeve sliding pair on the linear shaft.

[0020] In a preferred embodiment of the present invention, the above-mentioned cable clamp further includes a dynamic balancing hanger, which is sleeved on a straight shaft and located between the bent rod and the outer clamp sleeve.

[0021] The beneficial effects of this utility model embodiment are:

[0022] 1. The cable gripper in this utility model is equipped with a new type of guide wing, which adopts a curved surface guide design with an aspect ratio of (3:1-4:1) and is combined with a longitudinal drag-reducing groove (h=1.5-2mm), so that the air resistance coefficient of the cable gripper when passing through the pressure roller group is reduced to 0.28, which is 35% lower than the traditional structure;

[0023] 2. The combined structure of the guide wing's internal honeycomb core layer (hexagonal honeycomb core layer, wall thickness 0.2mm) and the leading edge polyurethane buffer layer (thickness 3mm) achieves a vibration energy absorption rate of ≥82%;

[0024] 3. The guide vane adopts carbon fiber reinforced nylon guide vane (surface hardness HRR120), which improves the wear life to 3000 hours, which is 4 times better than the cast aluminum structure;

[0025] 4. The modular design of the guide vane reduces the replacement time from 4 hours to 0.5 hours, while also improving the assembly efficiency of the guide vane;

[0026] 5. The guide wing size is optimized so that it does not affect the detachment and attachment of steel wire ropes when entering and leaving the station, ensuring smooth track operation within the station. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a side view of the single-line freight cableway gripper according to an embodiment of the present invention.

[0029] Figure 2 This is a top view of the single-line freight cableway gripper according to an embodiment of the present invention.

[0030] Icons: Bending shaft 110; Straight shaft 111; Bending section 112; First shaft hole 113; Sleeve sliding pair 120; Outer clamping bushing 130; Assembly seat 131; Second shaft hole 132; Dynamic balance hanger 140; Fixing nut 150; Variable cross-section outer clamping clamp 160; Second shaft pin 161; First shaft 162; Third shaft hole 163; Adaptive inner clamping clamp 170; Third pin 171; Jaw 172; Guide wing 180. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] First Embodiment

[0038] Please refer to Figure 1 This embodiment provides a single-line freight cableway gripper with guide wings, which includes a bent shaft 110, a sleeve sliding pair 120 sleeved on a straight shaft body 111 of the bent shaft 110, an outer gripper sleeve 130 sleeved and connected to the sleeve sliding pair 120 by an eccentric adjusting screw, a dynamic balance hanger 140, a fixing nut 150, and an adjustable gripper assembly connected to the outer gripper sleeve 130 and the bent shaft 110. The adjustable gripper assembly includes a variable cross-section outer gripper 160, an adaptive inner gripper 170, and a guide wing 180.

[0039] The bent shaft 110 is composed of a straight shaft body 111 and a bent rod portion 112 fixed to one end of the straight shaft body 111. The bent rod portion 112 extends vertically upward and then extends horizontally towards the other end of the straight shaft body 111. A through first shaft hole 113 is provided at the horizontal extension end for connecting the variable cross-section outer clamp 160.

[0040] The sleeve sliding pair 120 is sleeved on the linear shaft 111. Starting from the bent rod part 112 end, the dynamic balance hanger 140, the outer clamping bushing 130, and the fixing nut 150 are sequentially assembled on the sleeve sliding pair 120 on the linear shaft 111.

[0041] When descending along the hard rail, the dynamic balancing gantry 140, through the sleeve sliding pair 120 and the bent rod shaft 110, transmits power to the jaws of the adjustable clamping assembly, generating clamping force to firmly hold the high-speed load-bearing traction steel wire rope. When the freight car enters the transfer station or unloading station at high speed, the roller seat lifts the freight car's dynamic balancing gantry 140 by the slope of the hard rail. The freight car's dynamic balancing gantry 140 passes through a sleeve sliding pair 120 and the bent rod shaft 110, transmitting power to the adaptive inner clamping 170, causing it to reverse and widen the jaws. The jaws then lose clamping force and open, smoothly disengaging from the load-bearing traction rope and entering the trolley system, allowing the freight car to run on the station's tracks for unloading and loading, forming a continuous circular transportation system.

[0042] The outer clamp bushing 130 is sleeved on the straight shaft 111, and the bottom of the bushing is provided with a mounting base 131. The mounting base 131 is provided with a through second shaft hole 132 for connecting the variable cross section outer clamp 160.

[0043] The variable cross-section outer clamp 160 is generally arc-shaped, with two symmetrically arranged arc-shaped bodies. One end of the variable cross-section outer clamp 160 is connected to both ends of the outer clamp bushing 130 through the second shaft pin 161. The middle part of the variable cross-section outer clamp 160 is provided with a first shaft body 162, which passes through the first shaft hole 113 to connect the variable cross-section outer clamp 160 and the bent rod shaft 110, and connects the two arc-shaped bodies to make the variable cross-section outer clamp 160 a whole. The other end of the variable cross-section outer clamp 160 extends to the outside of the bent rod shaft 110 / roller, and a through third shaft hole 163 is provided at this end for connecting the adaptive inner clamp 170 and assembling the guide wing 180.

[0044] The two ends of the adaptive inner clamp 170 are connected to the first shaft hole 113 and the third shaft hole 163 respectively through the first shaft body 162 and the third pin 171, forming an adjustable clamping assembly with the adaptive inner clamp 170 and the variable cross-section outer clamp 160. Guide wings 180 are symmetrically arranged at both ends of the third shaft hole 163. The clamping ends of the outer and inner clamps are provided with complementary involute jaws 172. The module m of the working surface of the jaws 172 is 2-3, and the pressure angle α is 20°±1°. The tooth tip circle diameter da of the involute jaws 172 is Φ35-Φ40mm, the tooth root circle diameter df is Φ30-Φ35mm, and the effective meshing length L is 50-60mm, which improves the linear transmission efficiency of the steel cable clamping force.

[0045] In this embodiment, a wing root fixing seat 164 is provided at the third shaft hole 163 end of the variable cross-section outer clamp 160, and an anti-loosening bolt is used to pass through the wing root fixing seat 164 and the guide wing 180 for fixing.

[0046] Furthermore, in order to facilitate accurate assembly of the guide wing 180 and enhance stability, the length of the third pin 171 can be set to be greater than the through length of the third shaft hole 163. After the guide wing 180 has a stepped groove and is fitted onto one end of the third pin 171, bolts are used to pass through the guide wing root fixing seat 164 and the guide wing 180 for fixation.

[0047] Specifically, in this embodiment, the top, tip, and bottom of the guide wing 180 are curved surfaces, and a longitudinal guide groove is provided at the bottom. The aspect ratio of the curved guide part is 3:1-4:1, the radius of curvature of the leading edge is R=8-12mm, the thickness of the trailing edge is δ=2-3mm, and the depth of the longitudinal drag-reducing groove is h=1.5-2mm. The surface of the longitudinal guide groove has a lubricating layer to reduce aerodynamic drag.

[0048] The guide wing 180 uses carbon fiber reinforced nylon composite material as its shell, with a hexagonal honeycomb core layer inside and a polyurethane buffer layer covering the leading edge, which can absorb vibration energy, ensure stability, and reduce the bucket drop rate.

[0049] In summary, this embodiment relates to a single-line freight cableway gripper with a pneumatic guide wing 180. It innovatively introduces aerodynamic principles into cableway mechanical design. Through the linkage of the composite curved shaft 110 assembly and the adjustable outer clamp assembly, combined with the aerodynamically shaped guide wing 180 assembly, three major technological breakthroughs are achieved: (1) The optimized combination of the variable cross-section outer clamp 160 and the involute jaw 172 increases the clamping force by 40% while reducing friction loss; (2) The innovatively designed honeycomb structure guide wing 180 reduces aerodynamic resistance by 35% when passing through the pressure wheel assembly; (3) The precision axial adjustment mechanism, in conjunction with the dynamic balance hanger 140, effectively compensates for changes in line elevation. Actual measurements show that at a running speed of 2.5 m / s, the bucket drop rate of this device decreases from 0.8% in traditional structures to 0.12%, and the maintenance cycle is extended by 3 times. It is particularly suitable for heavy-duty freight cableways in complex mining terrain.

[0050] This specification describes examples of embodiments of the present invention, but does not imply that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings are not necessarily drawn to scale; some features may be enlarged or reduced to show details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to implement the present invention in various forms. Those skilled in the art will understand that multiple features illustrated and described with reference to any of the drawings can be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combinations of features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention may be used as needed for specific applications or implementations.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A single line freight cableway grip with guide wings, characterized in that, include: The bent shaft consists of a straight shaft body and a bent rod portion fixed to one end of the straight shaft body. The bent rod portion extends horizontally upward and biased towards the other end of the straight shaft body, and a through first shaft hole is provided at the extended end. An external retaining bushing is sleeved on the straight shaft body, and a mounting base is provided at the bottom of the bushing, and a second through shaft hole is provided on the mounting base; The variable cross-section outer clamp is generally arc-shaped. One end of the variable cross-section outer clamp is connected to the outer clamp bushing through a second shaft pin. A first shaft is provided in the middle of the variable cross-section outer clamp. The first shaft passes through the first shaft hole and connects the variable cross-section outer clamp and the bent rod shaft. A third shaft hole is provided at the other end of the variable cross-section outer clamp. The adaptive internal clamp is connected at both ends to the first shaft hole and the third shaft hole respectively through the first shaft body and the third shaft; Guide wings, which are symmetrically arranged at both ends of the third shaft hole.

2. The single line freight cableway carrier according to claim 1, characterized in that The third shaft hole end of the variable cross-section outer clamp is provided with a wing root fixing seat, and an anti-loosening bolt is used to pass through the wing root fixing seat and the guide wing for fixing.

3. The single line freight cableway carrier according to claim 2, characterized in that The length of the third pin is greater than the through length of the third shaft hole. After the guide wing root with a stepped groove is fitted onto one end of the third pin, a bolt is used to pass through the wing root fixing seat and the guide wing for fixation.

4. The single-line freight cableway gripper with guide wings according to claim 1, characterized in that, The top, tip, and bottom of the guide vane are curved surfaces, and a longitudinal guide groove is provided at the bottom. The aspect ratio of the curved guide part is 3:1-4:1, the radius of curvature of the leading edge is R=8-12mm, the thickness of the trailing edge is δ=2-3mm, and the depth of the longitudinal drag-reducing groove is h=1.5-2mm. The surface of the longitudinal guide groove has a lubricating layer.

5. The single-line freight cableway gripper with guide wings according to claim 1, characterized in that, The carbon fiber reinforced nylon composite shell has a hexagonal honeycomb core layer inside and a polyurethane buffer layer covering the front edge.

6. The single-line freight cableway gripper with guide wings according to any one of claims 1-5, characterized in that, The clamping ends of the outer and inner clamps are provided with complementary involute jaws, with the working surface of the jaws having a module m=2-3 and a pressure angle α=20°±1°.

7. The single-line freight cableway gripper with guide wings according to claim 6, characterized in that, The involute jaw has a tooth tip circle diameter da = Φ35-Φ40mm, a tooth root circle diameter df = Φ30-Φ35mm, and an effective meshing length L = 50-60mm.

8. The single-line freight cableway gripper with guide wings according to claims 1-5, characterized in that, The cable clamp also includes a sleeve sliding pair, which is sleeved on the linear shaft, and the outer clamping bushing is fixed to the sleeve sliding pair by screws.

9. The single-line freight cableway gripper with guide wings according to claim 8, characterized in that, The cable clamp also includes a fixing nut, which is fitted to the tail end of the linear shaft and limits the sleeve sliding pair on the linear shaft.

10. The single-line freight cableway gripper with guide wings according to claims 1-5, characterized in that, The cable clamp also includes a dynamic balancing hanger, which is sleeved on the straight shaft and located between the bent rod and the outer clamp sleeve.

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