Anti-falling rope pressing wheel set

Abstract

The utility model discloses an anti-disengaging rope pressing wheel set which comprises a bottom frame. The first rope pressing wheel is installed on the bottom frame through a first swing arm with a first rotating shaft at one end so as to press the steel wire rope in the axial direction of the first rotating shaft from the first side, and the first rope pressing wheel is correspondingly installed at the other end of the first swing arm; the second rope pressing wheel is mounted on the bottom frame through a second swing arm with a second rotating shaft at one end so as to press the steel wire rope in the axial direction of the second rotating shaft from the second side; the second rope pressing wheel is correspondingly mounted at the other end of the second swing arm; the tension spring provides force towards the steel wire rope for the first rope pressing wheel and the second rope pressing wheel, and in the initial state, the included angle between the tension of the tension spring and the center connecting line of the rope pressing wheel shaft and the rotating shaft on the corresponding swing arm is not smaller than 30 degrees. The anti-disengaging rope pressing wheel set is relatively compact in structure and relatively good in reliability.

Description

Technical Field

[0001] The utility model relates to an anti-slip pressure rope wheel group. Background Art

[0002] The rope-holding sheave is an important component for the normal operation of the endless rope continuous traction vehicle and the wire rope traction rail-holding vehicle. The main function of the rope-holding sheave group in the endless rope winch system is to ensure the stable operation of the wire rope used to pull the shuttle car, prevent the wire rope from floating up and pulling the shed, thereby preventing the vehicle from falling off the track. It is an important component for the smooth operation of the endless rope winch system.

[0003] The rope-holding wheel group provides pressure, support and guidance for, for example, traction wire ropes. When the diameter of the wire rope is relatively uniform, the rope-holding wheel group can operate smoothly. However, the wire rope has rope patterns and knots. For example, the wire rope is tied into a relatively long rope using a rope opener, or is used to connect the corresponding towed vehicle. The rope opener used is relatively large relative to the lateral size of the wire rope. When the rope opener passes through the rope-holding wheel group, the rope-holding wheel in the rope-holding wheel group will be knocked away in a predetermined direction by a certain distance. Under this condition, the rope-holding wheel in the rope-holding wheel group generally has the freedom to swing within a predetermined rotation angle range.

[0004] Furthermore, for example, when the shuttle car passes, the rope opener for tying the rope currently passing through the rope pressing wheel group will knock the rope pressing wheel open in a predetermined direction. The known rope pressing wheel group is generally equipped with a pair of rope pressing wheels, which are arranged on both sides of the wire rope and maintain a predetermined distance in the direction of the wire rope extension. Under this condition, the rope opener currently passing through, for example, will usually knock the two rope pressing wheels open one after another, generally making the angle at which one of the rope pressing wheels is currently knocked open relatively small, so that the wire rope can still be held by at least one rope pressing wheel in the rope pressing wheel group, without causing the wire rope to drift or pull the shed. This type of rope pressing wheel group can be called an anti-slip rope pressing wheel group.

[0005] The rope-holding wheel used in the rope-holding wheel group is generally a single-rim rope-holding wheel, and the wire rope is mainly prevented from slipping by the pressure of the rim. In other words, the rim of the rope-holding wheel is located on the upper side of the wire rope, and the surface of the rope-holding wheel used to hold the wire rope can be expressed as a holding surface. The rope-holding wheel in the current rope-holding wheel group swings in a vertical plane, and the opening of the rope-holding wheel formed thereby can be understood as opening obliquely upward. After the shuttle car passes, the rope-holding wheels on both sides automatically reset and close under the action of the reset spring, thereby tightening the wire rope. In some usage scenarios, such as an endless rope continuous traction vehicle arranged in a valley lane, or when there is an unexpected increase in resistance such as scratching during operation, it is very easy to cause the tension of the endless rope to be large or suddenly increase. Even if the rope-holding wheels on both sides of the wire rope are not hit, they will be pulled upward by the endless rope, causing a flying rope accident, which poses a serious safety hazard.

[0006] Chinese Patent Document CN207670400U discloses a non - endless rope continuous tractor anti - detachment pressing rope wheel. In this patent document, it is proposed to transform the swing of the pressing rope wheel in the vertical plane into the swing in the pressing plane, and the pressing plane is a horizontal plane in most applications. Under this condition, when the pressing rope wheel rotates, the angle between the pressing plane and the horizontal plane will not change, and it can still provide a force perpendicular to the steel wire rope, making it difficult for the steel wire rope to come off. However, in this patent document, the two configured pressing rope wheels are installed on a pressing rope wheel swing frame, and the pressing rope wheel swing frame is installed on a given base through a rotating shaft perpendicular to the pressing plane. But when one pressing rope wheel operates, the other pressing rope wheel will inevitably operate based on the shared swing frame, that is, the two pressing rope wheels will open or close simultaneously. The opening window is relatively long and the overall reset speed is relatively slow, which is likely to cause the steel wire rope to disengage.

[0007] Chinese Patent Document CN220886830U discloses a non - endless rope anti - detachment pressing rope wheel group. This non - endless rope anti - detachment pressing rope wheel group has two strip - shaped rotating plates. The middle of the strip - shaped rotating plate is installed on the rotating shaft fixing plate through a vertical rotating shaft. One end of the strip - shaped rotating plate is connected with a tension spring, and the other end is installed with a pressing rope wheel. In the initial state, the pressing rope wheel, the strip direction of the strip - shaped rotating plate, and the stretching direction of the tension spring are approximately in a straight line. This state cannot be effectively guaranteed, and there is a possibility of incomplete reset during the reset process. Utility Model Content

[0008] The purpose of the present utility model is to provide an anti - detachment pressing rope wheel group with a relatively compact structure and relatively good reliability.

[0009] According to an embodiment of the present utility model, an anti - detachment pressing rope wheel group is provided, including:

[0010] Base frame;

[0011] A first pressing rope wheel, which is installed on the base frame through a first swing arm having a first rotating shaft at one end, to press the steel wire rope axially on the first rotating shaft from the first side. The first pressing rope wheel is correspondingly installed at the other end of the first swing arm;

[0012] A second pressing rope wheel, which is installed on the base frame through a second swing arm having a second rotating shaft at one end, to press the steel wire rope axially on the second rotating shaft from the second side; the second pressing rope wheel is correspondingly installed at the other end of the second swing arm; and the center distance between the first pressing rope wheel and the second pressing rope wheel in the extending direction of the steel wire rope is 0.75 - 1.50 times the diameter of the pressing rope wheel rim;

[0013] A tension spring, which provides a force for the first pressing rope wheel and the second pressing rope wheel towards the steel wire rope. And in the initial state, the included angle between the tension of the tension spring and the connecting line of the pressing rope wheel shaft and the rotating shaft on the corresponding swing arm is not less than 30°.

[0014] Optionally, in an initial state, a center distance between the first rope pressing wheel and the second rope pressing wheel in a direction along the steel wire rope is equal to a wheel rim diameter of the first rope pressing wheel.

[0015] Optionally, the first rope pressing wheel and the second rope pressing wheel share a tension spring, one end of the tension spring is connected to the first swing arm, and the second end is connected to the second swing arm;

[0016] Or the first rope pressing wheel is equipped with a first tension spring, and the second rope pressing wheel is equipped with a second tension spring. Accordingly, one end of the first tension spring is connected to the first swing arm, and the other end is connected to the base frame; one end of the second tension spring is connected to the second swing arm, and the other end is connected to the base frame.

[0017] Optionally, the connection position between the corresponding swing arm and the tension spring is the end of the swing arm where the rope pressing wheel is located.

[0018] Optionally, the arm end tension spring pin on the swing arm for connecting with the tension spring is integrally configured with the axle of the corresponding rope pressing wheel and is coaxial.

[0019] Optionally, in the initial state, if the first rope pressing wheel and the second rope pressing wheel share a tension spring, the angle between the tension spring and the center line connecting the first rope pressing wheel on the first swing arm and the first rotating shaft is 30° to 45°;

[0020] If the first rope pressing wheel is equipped with a first tension spring and the second rope pressing wheel is equipped with a second tension spring, the connecting line between the first tension spring and the first rope pressing wheel on the first swing arm and the first rotating shaft is 60°~85°.

[0021] Optionally, in the front-to-back direction, the end where the first rotating shaft of the first swing arm is located and the end where the second rope pressing wheel of the second swing arm is located are located on the same side;

[0022] Correspondingly, the end where the first rope pressing wheel of the first swing arm is located and the end where the second rotating shaft of the second swing arm is located are located on the same side.

[0023] Optionally, a limit block is provided between the first swing arm and the second swing arm.

[0024] Optionally, an over-travel limiting structure or limiting component is provided on the chassis on the side of the first swing arm facing away from the wire rope, and on the side of the second swing arm facing away from the wire rope.

[0025] Optionally, the chassis comprises:

[0026] The bottom plate is a rectangular plate in the shape of a slat;

[0027] The vertical plates correspond to the long sides of the rectangular plates one by one; the lower edges of the vertical plates are combined with the long sides of the rectangular plates to form a trough structure;

[0028] End plates are used to seal the ends of the trough structure;

[0029] The mounting plates, which are parallel to the bottom plate, are provided in two pieces and are respectively fixed at both ends of the notch of the groove-shaped structure. An installation groove is left between the two mounting plates; and

[0030] The ear plates extend inwards from the inner side of the vertical plates and correspond to the vertical plates one by one. One vertical plate is used for the installation of the first swing arm, and the other vertical plate is used for the installation of the second swing arm.

[0031] It should be known that since the lateral dimension of the anti-detachment rope pressing wheel set is affected by the track width, its dimension is generally fixed. In the compactness design, the longitudinal dimension of the anti-detachment rope pressing wheel set is mainly considered, that is, the dimension in the direction along the track. In the embodiment of the present invention, the two swing arms of the provided anti-detachment rope pressing wheel set are located on both sides of the pressed steel wire rope. And from the perspective of the matching form, in the initial state, the included angle between the two swing arms and the steel wire rope is relatively small, and it can be generally understood as arranged along the steel wire rope. Furthermore, the tension spring for the reset of the swing arm is configured at a certain angle with the swing arm, and this angle is not less than 30°, so that the tension spring does not additionally occupy the longitudinal space, thereby making the overall structure relatively compact. At the same time, in the embodiment of the present invention, the rim of the rope pressing wheel is axially pressed on the corresponding rotating shaft, and when, for example, a rope separator passes through, no inclined detachment angle will be generated, and problems such as skipping of the rope are not likely to occur. In addition, the tension spring is reasonably arranged, and the torque provided in the opposite direction to the direction that causes the rope pressing wheel to open is relatively large, restricting the over-travel of the rope pressing wheel, thereby making the overall rope pressing reliability better. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the first embodiment.

[0033] Figure 2 It is a top view structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the first embodiment.

[0034] Figure 3 It is a left sectional view structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the first embodiment.

[0035] Figure 4 It is a top view structural schematic diagram of the anti-detachment rope pressing wheel set (open state) in the first embodiment.

[0036] Figure 5 It is a three-dimensional structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the first embodiment.

[0037] Figure 6 It is a front view structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the second embodiment.

[0038] Figure 7 It is a top view structural schematic diagram of the anti-detachment rope pressing wheel set (initial state) in the second embodiment.

[0039] Figure 8 Schematic left sectional view of the anti - detachment pressure rope wheel set (initial state) in the second embodiment.

[0040] Figure 9 Top - view structural schematic diagram of the anti - detachment pressure rope wheel set (open state) in the second embodiment.

[0041] Figure 10 Stereo - structural schematic diagram of the anti - detachment pressure rope wheel set (initial state) in the second embodiment.

[0042] In the figure: 1. Chassis, 2. Base plate, 3. Spring fixing pin, 4. Split pin, 5. Tension spring, 6. Pressure rope wheel, 7. Steel wire rope, 8. Swing arm, 9. Rotating shaft, 10. Rope opener, 11. Pressure rope wheel shaft mounting plate, 12. Split pin, 13. Spring fixing pin fixing plate, 14. Vertical plate, 15. Limit block, 16. Baffle plate. Detailed implementation manners

[0043] In Figure 1 and Figure 6 the exemplified structure, the chassis 1 is the base body of the anti - detachment pressure rope wheel set and is also the base body directly or indirectly installed with other components in the anti - detachment pressure rope wheel set.

[0044] Figure 1 and Figure 6 as can be seen, the main body of the chassis 1 is generally installed under the track, while the steel wire rope 7 is generally located in the middle of the track transversely and is arranged along the track.

[0045] In the embodiments of the present utility model, the track is used as a reference system, and there are definite transverse, longitudinal and height directions, where the transverse direction is also called the width direction, left - right direction, and the longitudinal direction is also called the length direction, front - back direction.

[0046] Although in some applications, the surface of the pressure rope wheel 6 for pressing the rope forms a certain angle with the horizontal plane, in more applications, the surface of the pressure rope wheel 6 for pressing the rope is usually described Figure 1 and Figure 6 in the state shown, that is, the axis of the rope wheel shaft of the pressure rope wheel 6 is a vertical line, and the surface of the wheel rim of the pressure rope wheel for pressing the rope is represented as a horizontal plane under this condition.

[0047] It should be known that the orientation problem has nothing to do with the structure or construction of the present utility model and is only used to conveniently describe the anti - detachment pressure rope wheel set in the embodiments of the present utility model.

[0048] Figure 1 and Figure 6 in the exemplified structure, the chassis 1 is generally a cabin - like structure, and this cabin - like structure is generally installed in a semi - buried manner. In the figure, the chassis 1 includes a rectangular base plate 2, which has relatively typical slat characteristics due to its relatively large aspect ratio of length to width.

[0049] Among them, the transverse direction of the bottom plate 2 is the extension direction of its long side, and the longitudinal direction is the extension direction of the short side of the bottom plate 2.

[0050] Figure 3 and Figure 8 As can be seen in, the long side of the bottom plate 2 is connected with a vertical plate 14, and the vertical plate 14 is Figure 1 and Figure 6 shown as a double isosceles trapezoid structure in, the lower base of the isosceles trapezoid structure located at the lower part is the small base, which constitutes the lower edge of the vertical plate 14, and is fixedly connected to the bottom plate 2 by means of this lower edge, generally connected by welding. In some implementations, the two vertical plates 14 and the bottom plate 2 can be integrally cut, and then bent at the lower edge of the vertical plate 14.

[0051] The two vertical plates 14 are generally parallel to each other, and the two vertical plates 14 and the bottom plate 2 cooperate to form a generally trough-shaped structure. For the convenience of description, it is denoted as a trough-shaped structure.

[0052] The trough-shaped structure is sealed at both ends in the left-right direction with end plates, and the end plates and the ends of the trough-shaped structure are generally also fixedly connected by welding.

[0053] The part of the vertical plate 14 that protrudes above the end plate is a small trapezoidal plate with a smaller upper part and a larger lower part, and the rest is denoted as a large trapezoidal plate. The small trapezoidal plate is located in the middle of the large trapezoidal plate, and the large base of the small trapezoidal plate is shorter than the large base of the large trapezoidal plate. The centrally arranged small trapezoidal plate divides the notch of the trough-shaped structure into three parts, that is, the installation notch part formed by the two small trapezoidal plates in the middle, and one side notch part on each side outside the installation notch part.

[0054] Furthermore, in Figure 5 and Figure 10 the illustrated structure, it can be seen that the side notch part is sealed with a sealing plate, and the length-width ratio of the sealing plate is larger than or exactly equal to the length-width ratio of the side notch.

[0055] In a preferred embodiment, the sealing plate and the plate body that determines the side notch are also fixedly connected by welding.

[0056] The sealing plate is provided with an elongated hole for connecting with a guide rail member using, for example, track bolts.

[0057] The installation notch part is used for installing the rope pressing wheel 6 and the components for resetting the rope pressing wheel 6. Some components are located in the installation notch, and the rope pressing wheel 6 and the swing arm 8 are exposed from the installation notch. Correspondingly, the steel wire rope 7 passes over the installation notch from above.

[0058] The rope pressing wheel 6 generally adopts a single flange wheel body for pressing the rope. Obviously, the flange of the rope pressing wheel 6 is located on the upper side of the rope pressing wheel, so as to press the steel wire rope 7 from top to bottom.

[0059] From Figure 5and Figure 10 As can be seen from the exemplary structure, a wire rope pressing wheel shaft mounting plate 11 is provided on each vertical plate 14, which is shown as an ear plate in the figure. For the convenience of description, the wire rope pressing wheel shaft mounting plate 11 is represented as an ear plate. Without causing position interference, movement interference, and assembly with other components, the wire rope pressing wheel shaft mounting plate 11 does not necessarily have to adopt the ear plate structure. Relatively speaking, the ear plate structure is relatively compact.

[0060] In the width direction, the two ear plates are respectively located on both sides of the wire rope 7. For the sake of distinction, the two wire rope pressing wheels are respectively called the first wire rope pressing wheel and the second wire rope pressing wheel, and the corresponding two ear plates are correspondingly called the first ear plate and the second ear plate. The other components associated with the first wire rope pressing wheel and the second wire rope pressing wheel are correspondingly described using "first" and "second".

[0061] At the same time, the wire rope pressing wheel 6 and the swing arm 8 are used as general terms. Among them, the swing arm 8 is a strip plate.

[0062] Among them, the first wire rope pressing wheel is mounted on the chassis 1 through a first swing arm having a first rotating shaft at one end, so as to press the wire rope 7 axially on the first rotating shaft from the first side. The axial direction of the first rotating shaft is Figure 1 and Figure 6 in the up and down direction in the shown state. The first wire rope pressing wheel presses the wire rope 7 downward from, for example, Figure 2 the left side of.

[0063] Correspondingly, the first wire rope pressing wheel is correspondingly mounted at the other end of the first swing arm. Thus, it can be seen that the wire rope pressing wheel 6 and the rotating shaft 9 are respectively located at both ends of the swing arm 8.

[0064] Similarly, the configuration of the second wire rope pressing wheel is the same as that of the first wire rope pressing wheel, which will not be repeated here. The second wire rope pressing wheel presses the wire rope 7 from the other side, such as Figure 2 pressing the wire rope 7 from the left side in.

[0065] In the direction along the wire rope 7, there is a certain arrangement distance in the front and back directions between the first wire rope pressing wheel and the second wire rope pressing wheel, so as to present a state as shown in Figure 2 . Thus, when, for example, the wire rope splitter 10 passes through, the first wire rope pressing wheel and the second wire rope pressing wheel collide with the wire rope splitter 10 successively, and the window for the wire rope 7 to simultaneously break away from the pressing of the two wire rope pressing wheels 6 is reduced. The direction along the wire rope 7 is the front and back direction, which is also the extending direction of the wire rope 7.

[0066] Furthermore, the center distance between the first rope pressing wheel and the second rope pressing wheel in the extending direction of the steel wire rope 7 is 0.75 to 1.50 times the rim diameter of the rope pressing wheel 6. As can be known from the foregoing description, this center distance is a longitudinal distance, and this center distance should not be too small, otherwise the two rope pressing wheels 6 may be disengaged from pressing simultaneously; this center distance should not be too large either, otherwise only one rope pressing wheel 7 will be in the state of pressing the steel wire rope 7 for a relatively long time, affecting the running stability of the steel wire rope 7.

[0067] In addition, in order to further make the overall structure more compact, the included angle between the provided tension spring 5 and the extending direction of the swing arm 8 should not be too small. More precisely, the extending direction of the swing arm 8 is the extending direction of the connecting line between the rope pressing wheel 6 on the swing arm 8 and the rotating shaft 9. The spring for resetting generally uses a tension spring 5, which belongs to a relatively typical two-force member. The included angle between the stretching direction of the tension spring 5 and the extending direction of the connecting line should not be less than 30°, so as to ensure that the tension spring 5 has a relatively large force arm.

[0068] In Figure 2 and Figure 7 In the illustrated structure, the rope pressing wheel 6 is in an initial state, and the initial state is a static state of pressing the steel wire rope 7, that is, a relatively stable state. At this time, the center distance between the first rope pressing wheel and the second rope pressing wheel in the direction along the steel wire rope 7 is equal to the rim diameter of the first rope pressing wheel.

[0069] The first rope pressing wheel and the second rope pressing wheel adopt the same rope pressing wheel 6, that is, the two rope pressing wheels 6 have the same size specifications.

[0070] In the embodiment of the present utility model, regarding the use of, for example, the tension spring 5, one tension spring 5 can be configured for each swing arm 8, and two swing arms 8 can share one tension spring 5. Among them, in Figure 5 the illustrated structure, each of the two swing arms 8 is equipped with one tension spring 5. Based on the anti-disengagement rope pressing wheel group of this example, the interference factors affecting the arrangement of the tension spring 5 are relatively small, and it can be arranged at a relatively arbitrary initial position. While in Figure 10 the illustrated structure, two swing arms 8 share one tension spring 5. At this time, the usage amount of the tension spring 5 can be reduced, but the interference factors affecting the arrangement of the tension spring 5 are relatively more, so the initial position arrangement thereof will be restricted to a certain extent.

[0071] In Figure 8 the illustrated structure, when the first rope pressing wheel and the second rope pressing wheel share one tension spring 5, one end of the tension spring 5 is connected to the first swing arm, and the second end is connected to the second swing arm. Another aspect Figure 9As can be seen from the exemplary structure, in the initial state, the angle between the extension direction of the tension spring 5 and the swing arm 8 is relatively small. At this time, the restoring moment provided by the tension spring 5 to the swing arm 8 is relatively small, and the longer the swing arm 8 is, the smaller the angle between the tension spring 5 and the extension direction of the swing arm 8. The prerequisite is that the position where the swing arm 8 is connected to the tension spring 5 is one end of the swing arm 8, and this end is the end where the rotating shaft 9 is located.

[0072] In some embodiments, for the case where two swing arms 8 share a tension spring 5, the connection position of the tension spring 5 to the swing arm 8 can be offset towards the middle of the swing arm 8. This will also bring another problem, that is, the installation space of the tension spring 5 will be relatively greatly restricted, and only a tension spring 5 with a relatively small length can be selected.

[0073] In some other embodiments, the first rope pressing wheel is equipped with a first tension spring, and the second rope pressing wheel is equipped with a second tension spring. Correspondingly, one end of the first tension spring is connected to the first swing arm, and the other end is connected to the base frame 1; one end of the second tension spring is connected to the second swing arm, and the other end is connected to the base frame 1. In such embodiments, the selection of the connection position of the first tension spring and the second tension spring to the base frame 1 is relatively flexible.

[0074] In Figure 3 In the exemplary structure, a spring fixing pin 3 is installed on the upper surface of the bottom plate 2 of the base frame 1. The spring fixing pin 3 and the bottom plate 2 can be connected by a detachable connection method such as screw connection, or can be connected by a non-detachable connection method such as welding. The tension spring 5 is a tension spring 5 with hooks at both ends. If the upper end of the spring fixing pin 3 has a pin head, the tension spring 5 can be directly hung on the pin head.

[0075] Regarding the two ends of the tension spring 5, they can also be hook rings. The hook rings can be sleeved on the spring fixing pin 3, and then a split pin 4 can be used to limit the hook rings.

[0076] Regarding the connection between the tension spring 5 and the swing arm 8, a tension spring pin connection method can also be adopted.

[0077] Furthermore, the tension spring pin provided on the swing arm 8 for connecting with the tension spring 5 and the rope pressing wheel shaft can be an integral structure, or can be an independent pin, the tension spring pin fixed on the swing arm 8.

[0078] Furthermore, in the initial state, when the first rope pressing wheel and the second rope pressing wheel share a tension spring 5, the angle between the tension spring 5 and the connecting line of the first rope pressing wheel and the first rotating shaft on the first swing arm is 30° - 45°;

[0079] When the first rope pressing wheel is equipped with a first tension spring and the second rope pressing wheel is equipped with a second tension spring, the angle between the first tension spring and the connecting line of the first rope pressing wheel and the first rotating shaft on the first swing arm is 60° - 85°.

[0080] In Figure 2 and Figure 6In the illustrated structure, in the front-to-back direction, the end of the first rotating shaft of the first swing arm and the end of the second rope-pressing wheel of the second swing arm are located on the same side, such as the front; correspondingly, the end of the first rope-pressing wheel of the first swing arm and the end of the second rotating shaft of the second swing arm are located on the same side, such as the rear, thereby forming the reverse installation state of the two rope-pressing wheels 6 shown in the figure, which can make the overall structure more compact. At the same time, the two rope-pressing wheels 7 can contact with, for example, the rope opener 10 successively instead of at the same time.

[0081] exist Figure 5 and Figure 10 In the illustrated structure, a limit block 15 is provided between the first swing arm and the second swing arm, which cooperates with the tension spring 5 to limit the initial position of the two rope pressure wheels 6, and also avoids the unstable operation of the wire rope 7 due to inconsistent force applied by the tension spring 5 to the two swing arms 8, resulting in inconsistent force applied to both sides of the wire rope 7.

[0082] Since the collision may generate a large impact force, in some embodiments, an over-travel limit structure or a limit component is provided on the base frame 1 on the side of the first swing arm away from the wire rope 7 and on the side of the second swing arm away from the wire rope 7, which is beneficial to the rapid resetting of the swing arm 8.

Claims

1. An anti-slip sheave assembly, characterized in that: include: chassis; A first rope-pressing wheel is mounted on the base frame through a first swing arm having a first rotating shaft at one end, so as to press the steel wire rope in the axial direction of the first rotating shaft from a first side, and the first rope-pressing wheel is correspondingly mounted on the other end of the first swing arm; The second rope pressing wheel is installed on the base frame through a second swing arm having a second rotating shaft at one end, so as to press the steel wire rope in the axial direction of the second rotating shaft from the second side; the second rope pressing wheel is correspondingly installed at the other end of the second swing arm; and the center distance between the first rope pressing wheel and the second rope pressing wheel in the extending direction of the steel wire rope is 0.75 to 1.50 times the diameter of the rope pressing wheel rim; The tension spring provides the first and second rope-pressing wheels with force toward the wire rope, and in the initial state, the angle between the tension of the tension spring and the centerline connecting the rope-pressing wheel shaft and the rotating shaft on the corresponding swing arm is not less than 30°.

2. The anti-slip sheave assembly according to claim 1, characterized in that: In the initial state, the center distance between the first and second rope pressing wheels in the direction along the wire rope is equal to the rim diameter of the first rope pressing wheel.

3. The anti-slip sheave assembly according to claim 1, characterized in that: The first rope pressing wheel and the second rope pressing wheel share a tension spring, one end of the tension spring is connected to the first swing arm, and the second end is connected to the second swing arm; Or the first rope pressing wheel is equipped with a first tension spring, and the second rope pressing wheel is equipped with a second tension spring. Accordingly, one end of the first tension spring is connected to the first swing arm, and the other end is connected to the base frame; one end of the second tension spring is connected to the second swing arm, and the other end is connected to the base frame.

4. The anti-slip sheave assembly according to claim 3, characterized in that: The connection position between the corresponding swing arm and the tension spring is the end where the rope pressing wheel of the swing arm is located.

5. The anti-slip sheave assembly according to claim 4, characterized in that: The arm end tension spring pin on the swing arm for connecting with the tension spring is integrally configured with the wheel axle of the corresponding rope pressing wheel and is coaxial.

6. The anti-slip sheave assembly according to claim 3, characterized in that: In the initial state, if the first rope pressing wheel and the second rope pressing wheel share a tension spring, the angle between the tension spring and the center line connecting the first rope pressing wheel and the first rotating shaft on the first swing arm is 30°~45°; If the first rope pressing wheel is equipped with a first tension spring and the second rope pressing wheel is equipped with a second tension spring, the connecting line between the first tension spring and the first rope pressing wheel on the first swing arm and the first rotating shaft is 60°~85°.

7. The anti-slip sheave assembly according to claim 1, characterized in that: In the front-to-back direction, the end where the first rotating shaft of the first swing arm is located and the end where the second rope pressing wheel of the second swing arm is located are located on the same side; Correspondingly, the end where the first rope pressing wheel of the first swing arm is located and the end where the second rotating shaft of the second swing arm is located are located on the same side.

8. The anti-slip sheave assembly according to claim 7, characterized in that: A limiting block is arranged between the first swing arm and the second swing arm.

9. The anti-slip sheave assembly according to claim 8, characterized in that: On the base frame, an over-travel limiting structure or limiting component is provided on the side of the first swing arm facing away from the steel wire rope, and on the side of the second swing arm facing away from the steel wire rope.

10. The anti-slip sheave assembly according to claim 1, characterized in that: The chassis comprises: The bottom plate is a rectangular plate in the shape of a slat; The vertical plates correspond to the long sides of the rectangular plates one by one; the lower edges of the vertical plates are combined with the long sides of the rectangular plates to form a trough structure; End plates are used to seal the ends of the trough structure; Two mounting plates are parallel to the bottom plate and fixed at the two ends of the slot of the slot structure respectively, with a mounting slot left between the two mounting plates; and The ear plates are cantilevered inward from the inner side of the vertical plates and correspond to the vertical plates one by one, wherein one vertical plate is used for installing the first swing arm, and the other vertical plate is used for installing the second swing arm.

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