Gravity type four-connecting-rod rope clip for large-bearing high-gradient single-line freight cableway

Abstract

The gravity type four-connecting-rod rope clip comprises a bent rod shaft, a clip assembling sleeve, a hanging rod, a roller assembling sleeve and a self-adaptive clip assembly, the bent rod shaft comprises a horizontal section and a bent section arranged at the front end of the horizontal section, and a first shaft hole is formed in the front end of the bent section; the horizontal section is sequentially sleeved with a clamp assembling sleeve, a hanging rod and a roller assembling sleeve from the tail end to the connecting end of the bent section. The roller assembling sleeve extends towards the upper part in the vertical direction to form a connecting plate, the bottom of the connecting plate respectively extends towards the left side and the right side to form connecting blocks, roller connecting seats are arranged at the end parts of the connecting blocks, and upper rollers are assembled on the roller connecting seats; a horizontal supporting plate is arranged at the top of the connecting plate, a cart rod is arranged at the top of the horizontal supporting plate, and the axis of the cart rod is located on the connecting line of the wheel groove center lines of the two wheels. A jaw with the variable diameter is arranged at the end of the self-adaptive clamping assembly, the traction rope is clamped or disengaged according to the gradient change of the hard rail, and the circle center of the jaw is flush with the bottom of the rolling groove of the roller.

Description

Technical Field

[0001] This utility model relates to the technical field of freight cableway equipment, specifically to a gravity-type four-bar gripper for single-line circulating freight cableways suitable for high load-bearing and high-slope conditions. Background Technology

[0002] The existing single-line circulating freight aerial ropeway has a gravity grip capacity of less than or equal to 1000 kg, an applicable traction rope diameter of 21-36 mm, a climbing angle of less than 30°, an operating speed of less than 2.5 m / s, and a transport capacity of less than 150 tons / hour.

[0003] However, with increasingly complex mine terrain and routes, significant elevation differences, large transport volumes, heavy line loads, and heavy single-carload loads, a larger diameter of the traction steel wire rope is required. This results in at least the following technical defects in the existing single-line circulating freight cableway gravity grip:

[0004] 1. Not applicable to freight transport needs with an existing load capacity of 1500kg, a traction rope diameter of 36-40mm, a climbing angle of <35°, and an operating speed of >2.5m / s;

[0005] 2. The existing saddle-type cable grab does not have jaws to clamp the traction rope, which may cause the bucket to fall off when the line is not running smoothly; it cannot adapt to traction ropes with a diameter of 36-40mm and slopes of more than 35°.

[0006] 3. The volume of the existing truck has increased, but the original truck trolley and rollers are in an eccentric structure. The eccentricity of the force point of the trolley system causes the truck to swing a lot. Utility Model Content

[0007] The purpose of this utility model is to provide a gravity-type four-bar gripper for high-load, high-gradient single-line freight cableway. Through the optimization of four-bar mechanism parameters, involute toothed jaw design, and co-linear arrangement of the trolley system, it can achieve a load capacity of 1500kg, a climbing angle of 35°, and an operating speed of >2.5m / s. It adopts an adaptive clamping mechanism, is compatible with 36-40mm traction ropes, and reduces the trolley sway by 40%, making it suitable for large-capacity mining transportation in complex terrain.

[0008] The embodiments of this utility model are implemented as follows:

[0009] A gravity-type four-bar gripper for a high-load-bearing, high-gradient single-line freight cableway includes: a bent shaft, a gripper assembly, a boom, a roller assembly, and an adaptive gripper component. The bent shaft includes a horizontal section and a bent section at the front end of the horizontal section, with a first shaft hole at the front end of the bent section. From the tail end to the connecting end of the bent section, the horizontal section is sequentially fitted with the gripper assembly, boom, and roller assembly. A connecting plate extends vertically upward from the roller assembly, and connecting blocks extend to the left and right sides from the bottom of the connecting plate. Roller connecting seats are provided at the ends of the connecting blocks, and rollers are mounted on the roller connecting seats. A horizontal support plate is provided on the top of the connecting plate, and a push rod is provided on the top of the horizontal support plate. The axis of the push rod is located on the connecting line of the center line of the wheel grooves of the two rollers. The end of the adaptive gripper component is provided with jaws of variable diameter, which clamp or release the traction rope according to the gradient of the hard rail. The center of the jaws is flush with the bottom of the roller groove.

[0010] In a preferred embodiment of this utility model, the above-mentioned adaptive card-holding component includes:

[0011] The clamping device is equipped with a second shaft hole at the bottom;

[0012] The inner clamp has a third shaft hole and a fourth shaft hole at its two ends, and a first shaft pin passes through the third shaft hole and the first shaft hole to assemble the inner clamp onto the outer clamp; the inner clamp has a first jaw at the end of the fourth shaft hole.

[0013] The outer clamp has a fifth shaft hole and a sixth shaft hole at both ends. A second jaw is provided at the end of the fifth shaft hole. The first jaw and the second jaw form an arc-shaped area for restraining the traction rope. The eccentricity between the rotation spindle of the inner and outer clamps and the jaw is ≤15mm. The second shaft pin passes through the fifth shaft hole and the fourth shaft hole to assemble one end of the outer clamp onto the inner clamp. The third shaft pin passes through the sixth shaft hole and the second shaft hole that matches the clamp assembly to assemble the other end of the outer clamp onto the clamp assembly.

[0014] In a preferred embodiment of this utility model, the outer clamp is two symmetrical arc-shaped pieces, with the first pin connecting the two arc-shaped pieces in the middle, and the fifth shaft hole and the sixth shaft hole respectively provided at both ends of the arc-shaped pieces.

[0015] In a preferred embodiment of the present invention, the diameter of the third shaft hole of the inner clamp is smaller than that of the fourth shaft hole, and the outer diameter of the end of the third shaft hole is smaller than that of the end of the fourth shaft hole; an involute tooth is provided in the first jaw.

[0016] In a preferred embodiment of the present invention, the aforementioned external clamp includes a linear transition between a straight segment and an arc segment, wherein the fifth shaft hole is located in the straight segment and the sixth shaft hole is located in the arc segment, and an involute tooth is provided in the second jaw.

[0017] In a preferred embodiment of this utility model, the tail end of the horizontal section is provided with an external thread, and a trolley-specific nut is provided at the tail end of the horizontal section to engage with the external thread.

[0018] In a preferred embodiment of the present invention, the aforementioned rod includes an integrally formed bushing portion and a rod body. The bushing portion is fitted onto the horizontal section of the bent rod shaft, and the rod body is connected to the outer wall of the bushing portion and inclined at an angle of 120°-135° to the horizontal section. Multiple connecting holes are provided on the centerline of the rod body.

[0019] In a preferred embodiment of the present invention, the roller assembly further includes triangular reinforcing ribs, which are provided at least at the connection between the roller assembly and the connecting plate, and at the connection between the connecting plate and the horizontal support plate.

[0020] In a preferred embodiment of this utility model, the top of the pushcart rod is arc-shaped.

[0021] In a preferred embodiment of the present invention, the gravity-type four-bar linkage further includes a sliding pair, which is mounted on the horizontal section and has mounting positions for mounting the clamping device, the boom, and the rollers.

[0022] The beneficial effects of this utility model embodiment are:

[0023] 1. The position of the push rod has been redesigned so that the center line of the push rod is collinear with the center line of the double roller groove, so that the direction of the push force coincides with the center axis of the truck's center of gravity, effectively eliminating the torque offset caused by the traditional tail nut push rod, reducing the swing amplitude and improving the stability of the cable gripper.

[0024] 2. Through the optimization of four-bar linkage parameters, involute toothed jaw design, and co-linear arrangement of the trolley system, a load capacity of 1500kg, a climbing angle of 35°, and an operating speed of >2.5m / s are achieved; an adaptive clamping mechanism is adopted, which is compatible with 36-40mm traction ropes, reducing the trolley swing by 40%, making it suitable for large-capacity mining transportation in complex terrain. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a side view of the gravity-type four-bar gripper for a high-load-bearing, high-slope single-line freight cableway according to an embodiment of the present invention.

[0027] Figure 2This is a top view of the gravity-type four-bar gripper for a high-load-bearing, high-slope single-line freight cableway according to an embodiment of the present utility model.

[0028] Icons: Bent shaft 110; Horizontal section 111; Bent section 112; First shaft hole 113; Clamping fitting 120; Second shaft hole 121; Hanging rod 130; Bushing part 131; Hanging rod body 132; Connecting hole 133; Notch 134; Roller fitting 140; Connecting plate 141; Connecting block 142; Roller connecting seat 143; Roller 144; Horizontal support plate 145; Push rod 146; Triangular reinforcing rib 147; Push rod special nut 150; Sliding pair 160; Inner clamp 170; Third shaft hole 171; Fourth shaft hole 172; First jaw 173; Outer clamp 180; Fifth shaft hole 181; Sixth shaft hole 182; Second jaw 183; First shaft pin 001; Second shaft pin 002; Third shaft pin 003. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] First Embodiment

[0036] Please see Figure 1 This embodiment provides a gravity-type four-bar gripper for a high-load, high-gradient single-line freight cableway, which includes a bent shaft 110, a gripper mounting 120, a boom 130, a roller mounting 140, and an adaptive gripper assembly, all sequentially mounted on the bent shaft 110.

[0037] The bent shaft 110 includes a horizontal section 111 and a bent section 112 located at the front end of the horizontal section 111. The tail end of the horizontal section 111 is provided with an external thread, and a trolley-specific nut 150 is provided at the tail end of the horizontal section 111 to engage with the external thread.

[0038] The original position of the trolley for the cable gripper was at the tail end of the trolley-specific nut 150, which caused the center of the force point of the cable gripper trolley to be off the center line of gravity of the truck, making it easy for the truck to sway. However, the newly designed trolley rod in this embodiment can overcome this defect by repositioning the force point and the roller on the same line.

[0039] The horizontal section 111 is also fitted with a clamping device 120, a hanging rod 130, and a roller device 140 in sequence from the tail end to the connecting end of the bending section 112.

[0040] Preferably, a sliding pair 160 can also be installed on the bending shaft 110. The sliding pair 160 is mounted on the horizontal section 111, and the sliding pair 160 is provided with mounting positions for mounting the clamping fitting 120, the lifting rod 130, and the roller fitting 140. Of course, the sliding pair 160 can be omitted, and the corresponding mounting positions can be directly machined on the bending shaft 110 and assembled using eccentric screws. However, this will cause stress concentration in the structure of the bending shaft 110, which is not conducive to the long-term use of the bending shaft 110.

[0041] A first shaft hole 113 is provided at the front end of the bent section 112 for assembling the adaptive clamping assembly.

[0042] The clamping device 120 is sleeve-shaped, with screw fixing holes at the bottom and a second shaft hole 121 at the bottom for connecting the adaptive clamping assembly.

[0043] The boom 130 includes an integrally formed bushing portion 131 and a boom body 132. The bushing portion 131 is fitted onto the horizontal section 111 of the bent shaft 110, and a mechanical limiting structure is provided inside the bushing to control the swing amplitude of the boom 130 within ±30° to ensure stability. In this embodiment, the mechanical limiting structure is not limited; for example, a limiting position can be provided on the bushing portion 131 to control the swing amplitude of the boom 130.

[0044] The boom body 132 is a rod structure, connected to the outer wall of the bushing portion 131 and inclined at an angle of 120°-135° to the horizontal section 111. Multiple connecting holes 133 are provided along the centerline of the boom body 132. In this embodiment, the boom body 132 also has a notch 134 to reduce interference from the clamping fitting 120°.

[0045] The roller assembly 140 extends a connecting plate 141 vertically upward from the bushing. Connecting blocks 142 extend from the bottom of the connecting plate 141 to the left and right sides respectively. Roller connecting seats 143 are provided at the ends of the connecting blocks 142, and rollers 144 are mounted on the roller connecting seats 143.

[0046] A horizontal support plate 145, which is an isosceles trapezoid in top view, is provided on the top of the connecting plate 141, and a push rod 146 is provided on the top of the horizontal support plate 145. During assembly, the axis of the push rod 146 is ensured to coincide with the connecting line of the center line of the wheel grooves of the two rollers, so that the push rod is located at the center of the two rollers, and the force point and center of gravity of the push rod are always on the center line of the connecting line in the direction of roller travel, thereby ensuring the stability of the cable gripper.

[0047] The trolley rod 146 is connected to the horizontal support plate 145 via a cylinder. A rectangular block with an upwardly convex cross-section is assembled on the top of the cylinder, giving it an arc shape. The top of the arc-shaped trolley rod 146 has a curvature radius of R50mm to reduce the peak contact stress with the trolley device.

[0048] The roller assembly 140 also includes triangular reinforcing ribs 147, which are at least located at the connection between the roller assembly 140 and the connecting plate 141, and at the connection between the connecting plate 141 and the horizontal support plate 145. Through the composite structure of the horizontal support plate 145 and the triangular reinforcing ribs 147 (increasing bending strength by 40%), the push rod 146 is rigidly supported, reducing the swaying amplitude.

[0049] The end of the adaptive clamping assembly is equipped with jaws of variable diameter, which clamp or release the traction rope according to the change of the hard rail slope, and the center of the jaws is flush with the bottom of the roller groove.

[0050] Specifically, the adaptive card-holding assembly includes a card-holding device 120, an inner card-holding device 170, and an outer card-holding device 180.

[0051] The clamping fitting 120 is located between the lifting rod 130 and the trolley-specific nut 150 and is connected to the sliding pair 160. The sliding position of the clamping fitting 120 is limited by screws, and the self-locking tilt angle of the clamping fitting 120 is limited to 15°-20°. The bottom of the clamping fitting 120 is provided with a second shaft hole 121 for mounting the outer clamp 180.

[0052] The inner clamp 170 has a third shaft hole 171 and a fourth shaft hole 172 at its two ends, respectively. The first shaft pin 001 passes through the third shaft hole 171 and the second shaft hole 121 to assemble the inner clamp 170 onto the outer clamp 180. The inner clamp 170 has a first jaw 173 at the end of the fourth shaft hole 172. The diameter of the third shaft hole 171 of the inner clamp 170 is smaller than that of the fourth shaft hole 172, and the outer diameter of the end of the third shaft hole 171 is smaller than that of the end of the fourth shaft hole 172. The first jaw 173 has involute teeth.

[0053] The outer clamp 180 has a fifth shaft hole 181 and a sixth shaft hole 182 at its two ends, respectively. A second jaw 183 is provided at the end of the fifth shaft hole 181. The first jaw 173 and the second jaw 183 form an arc-shaped section for restraining the traction rope. The second shaft pin 002 passes through the fifth shaft hole 181 and the fourth shaft hole 172 to assemble one end of the outer clamp 180 onto the inner clamp 170. The third shaft pin 003 passes through the sixth shaft hole 182 and the second shaft hole 121 of the clamp mounting accessory 120 to assemble the other end of the outer clamp 180 onto the clamp mounting accessory 120.

[0054] The outer clamp 180 consists of two symmetrical arc-shaped pieces. The first pin 001 is provided in the middle to connect the two arc-shaped pieces. The fifth shaft hole 181 and the sixth shaft hole 182 are respectively provided at both ends of the arc-shaped pieces.

[0055] In this embodiment, the eccentricity between the inner and outer clamping mandrels and the jaws is ≤15mm, and the first jaw 173 and the second jaw 183 adopt a large jaw design with involute teeth, tooth height of 3-4mm, meshing length ≥40mm, surface hardening treatment of HRC58-62, and adaptive adjustment of 0.5-1.2mm. It can be adapted to 36-40mm traction ropes and is suitable for terrains with large elevation differences or cargo ropes with large carrying capacity.

[0056] In this embodiment, the operating principle of the gravity-type four-bar gripper for high-slope single-line freight cableway is as follows:

[0057] When a freight truck leaves the transfer or unloading station after loading or unloading materials, the roller seat of the cable grip descends along the slope of the hard rail at the designed speed. The clamp of the cable grip rides on the traction rope at the designed speed. The freight truck gravity boom 130 passes through a sliding pair 160 and is transmitted to the clamp through the bent shaft 110 to generate clamping force, firmly gripping the high-speed load-bearing traction steel wire rope. When the freight truck enters the transfer or unloading station at high speed, the roller seat lifts the freight truck gravity boom 130 along the slope of the hard rail, causing the clamp to lose clamping force and open, smoothly disengaging from the load-bearing traction rope.

[0058] 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.

[0059] 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 gravity-type four-bar grip for a high-load-bearing, high-gradient single-line freight cableway, characterized in that: include: The bending shaft includes a horizontal section and a bent section located at the front end of the horizontal section. The front end of the bent section is provided with a first shaft hole. The horizontal section is fitted with a clamping device, a hanging rod, and a roller device in sequence from the tail end to the bent section. The roller assembly includes a connecting plate extending vertically upwards. Connecting blocks extend from the bottom of the connecting plate to the left and right sides respectively. Roller connecting seats are provided at the ends of the connecting blocks, and rollers are mounted on the roller connecting seats. A horizontal support plate is provided at the top of the connecting plate, and a push rod is provided at the top of the horizontal support plate. The axis of the push rod is located on the line connecting the center lines of the grooves of the two rollers. The adaptive clamping assembly has a jaw with a variable diameter at its end, which clamps or releases the traction rope according to the change in the slope of the hard rail. The center of the jaw is flush with the bottom of the roller groove.

2. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 1, characterized in that, The adaptive card-holding component includes: The clamping device is equipped with a second shaft hole at its bottom; The inner clamp has a third shaft hole and a fourth shaft hole at its two ends, and a first shaft pin passes through the third shaft hole and the first shaft hole to assemble the inner clamp onto the outer clamp; the inner clamp has a first jaw at the end located in the fourth shaft hole. The outer clamp has a fifth shaft hole and a sixth shaft hole at both ends. A second jaw is provided at the end of the fifth shaft hole. The first jaw and the second jaw form an arc-shaped area for restraining the traction rope. The eccentricity between the rotation axis of the inner and outer clamps and the jaw is ≤15mm. A second shaft pin passes through the fifth shaft hole and the fourth shaft hole to assemble one end of the outer clamp onto the inner clamp. A third shaft pin passes through the sixth shaft hole and the second shaft hole of the clamp assembly to assemble the other end of the outer clamp onto the clamp assembly.

3. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 2, characterized in that, The outer clamp consists of two symmetrical arc-shaped pieces, with a connection between the two arc-shaped pieces in the middle. The fifth and sixth shaft holes are respectively provided at both ends of the arc-shaped pieces.

4. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 2, characterized in that, The diameter of the third shaft hole of the inner clamp is smaller than that of the fourth shaft hole, and the outer diameter of the end of the third shaft hole is smaller than that of the end of the fourth shaft hole; the first jaw is provided with involute teeth.

5. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 2, characterized in that, The external clamp includes a linear transition between a straight segment and an arc segment, wherein the fifth shaft hole is located in the straight segment and the sixth shaft hole is located in the arc segment, and the second jaw is provided with involute teeth.

6. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 1, characterized in that, The end of the horizontal section is provided with an external thread, and a trolley-specific nut is provided at the end of the horizontal section to engage with the external thread.

7. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 1, characterized in that, The boom includes an integrally formed bushing and a boom body. The bushing is fitted onto the horizontal section of the bent shaft. The boom body is connected to the outer wall of the bushing and is inclined at an angle of 120°-135° to the horizontal section. Multiple connecting holes are provided on the centerline of the boom body.

8. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 1, characterized in that, The roller assembly also includes triangular reinforcing ribs, which are provided at least at the connection between the roller assembly and the connecting plate, and at the connection between the connecting plate and the horizontal support plate.

9. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to claim 1, characterized in that, The top of the push rod is curved.

10. The gravity-type four-bar gripper for high-load-bearing, high-gradient single-line freight cableway according to any one of claims 1-9, characterized in that, The gravity-type four-bar linkage cable clamp also includes a sliding pair, which is assembled on the horizontal section. The sliding pair is provided with mounting positions for assembling the clamping device, the boom, and the roller device.

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