Anti-falling rope pressing wheel set

Abstract

The invention 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 present invention relates to an anti - detachment rope pressing wheel set. Background Art

[0002] The rope pressing wheel is an important component for the normal operation of endless rope continuous tractor and wire rope traction rail car. In, for example, an endless rope winch system, the main function of the rope pressing wheel set is to ensure the stable operation of a wire rope, such as for towing a shuttle car, and prevent the wire rope from floating upward and pulling the shed, thereby preventing the vehicle from derailing, and it is an important component for the stable operation of, for example, an endless rope winch system.

[0003] The rope pressing wheel set provides pressing and guiding for a wire rope used for towing, etc. When the diameter of the wire rope is relatively uniform, the rope pressing wheel set can operate smoothly. However, the wire rope has rope patterns and knots. For example, the wire rope will be knotted into a relatively long rope using a rope opening device, or used to connect the corresponding towed vehicle. The rope opening device used has a relatively large lateral dimension relative to the wire rope. When the rope opening device passes through the rope pressing wheel set, it will knock the rope pressing wheels in the rope pressing wheel set open a certain distance in a predetermined direction. Under this condition, the rope pressing wheels in the rope pressing wheel set generally have the freedom to swing within a predetermined angular range.

[0004] Furthermore, for example, when a shuttle car passes through, the current rope opening device used for knotting the rope passing through the rope pressing wheel set will knock the rope pressing wheel open in a predetermined direction. The known rope pressing wheel set generally has a pair of rope pressing wheels arranged on both sides of the wire rope and maintaining a predetermined distance in the direction of the wire rope extension. Under this condition, the current rope opening device, such as, will generally knock open the two rope pressing wheels successively, and generally make the angle at which one of the rope pressing wheels is currently knocked open relatively small, so that the wire rope can still be in a state of being pressed by at least one of the rope pressing wheels in the rope pressing wheel set, and will not cause the wire rope to float upward or pull the shed. Such a rope pressing wheel set can be called an anti - detachment rope pressing wheel set.

[0005] The rope pressing wheels used in the rope pressing wheel set are generally single - rim rope pressing wheels. The wire rope mainly relies on the pressing of the rim to achieve anti - detachment. In other words, the rim of the rope pressing wheel is located above the wire rope, and the surface of the rope pressing wheel for pressing the wire rope can be expressed as a pressing surface. The current swinging mode of the rope pressing wheel in the rope pressing wheel set is swinging in the vertical plane, and the opening of the rope pressing wheel formed thereby can be understood as opening obliquely upward. After the shuttle car passes through, under the action of the return spring, the two side rope pressing wheels automatically reset and close, and press the wire rope tightly. In some use scenarios, such as an endless rope continuous tractor arranged in a valley roadway, or when there is an accidental increase in resistance such as scraping and jamming during operation, it is very easy to cause a large or sudden increase in the tension of the endless rope. Even if the rope pressing wheels on both sides of the wire rope are not impacted, they will be pulled open upward by the endless rope, resulting in a flying rope accident, and there are serious safety hazards.

[0006] Chinese Patent Document CN207670400U discloses a non - endless - rope continuous tractor anti - detachment pressure rope wheel. In this patent document, it is proposed to convert the swing of the pressure 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 pressure rope wheel swings, the angle between the pressing plane and the horizontal plane will not change, and the force perpendicular to the steel wire rope can still be provided, and the steel wire rope is not easily detached. However, in this patent document, the two configured pressure rope wheels are installed on a pressure rope wheel swing frame, and the pressure rope wheel swing frame is installed on a given base through a rotating shaft perpendicular to the pressing plane. But when one pressure rope wheel acts, the other pressure rope wheel will inevitably act based on the shared swing frame, that is, the two pressure 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 pressure rope wheel set. This non - endless - rope anti - detachment pressure rope wheel set 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 pressure rope wheel. In the initial state, the pressure 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. Summary of the Invention

[0008] The purpose of the present invention is to provide an anti - detachment pressure rope wheel set with a relatively compact structure and relatively good reliability.

[0009] According to an embodiment of the present invention, an anti - detachment pressure rope wheel set is provided, including: A chassis; A first pressure rope wheel, installed on the chassis through a first swing arm having a first rotating shaft at one end, to press the steel wire rope axially from the first side of the first rotating shaft. The first pressure rope wheel is correspondingly installed at the other end of the first swing arm; A second pressure rope wheel, installed on the chassis through a second swing arm having a second rotating shaft at one end, to press the steel wire rope axially from the second side of the second rotating shaft; the second pressure rope wheel is correspondingly installed at the other end of the second swing arm; and the center distance between the first pressure rope wheel and the second pressure rope wheel in the extending direction of the steel wire rope is 0.75 - 1.50 times the diameter of the pressure rope wheel rim; A tension spring, providing the force for the first pressure rope wheel and the second pressure 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 pressure rope wheel shaft and the rotating shaft on the corresponding swing arm is not less than 30°.

[0010] Optionally, in the initial state, the center distance between the first pressure rope wheel and the second pressure rope wheel in the direction along the steel wire rope is equal to the diameter of the first pressure rope wheel rim.

[0011] 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; 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.

[0012] 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.

[0013] 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.

[0014] 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°; 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°.

[0015] 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; 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.

[0016] Optionally, a limit block is provided between the first swing arm and the second swing arm.

[0017] 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.

[0018] Optionally, 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.

[0019] 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 roughly fixed. In the compactness design, the longitudinal dimension of the anti - detachment rope - pressing wheel set, that is, the dimension in the direction along the track, is mainly considered. 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 being arranged along the steel wire rope. Furthermore, the tension spring for resetting 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. When, for example, a wire rope distributor passes through, there will be no inclined escape angle, 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

[0020] Figure 1 It is a front - view structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the first embodiment.

[0021] Figure 2 It is a top - view structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the first embodiment.

[0022] Figure 3 It is a left - sectional structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the first embodiment.

[0023] Figure 4 It is a top - view structural schematic diagram of the anti - detachment rope - pressing wheel set (open state) in the first embodiment.

[0024] Figure 5 It is a three - dimensional structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the first embodiment.

[0025] Figure 6 It is a front - view structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the second embodiment.

[0026] Figure 7 It is a top - view structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the second embodiment.

[0027] Figure 8 It is a left - sectional structural schematic diagram of the anti - detachment rope - pressing wheel set (initial state) in the second embodiment.

[0028] Figure 9 It is a top - view structural schematic diagram of the anti - detachment rope - pressing wheel set (open state) in the second embodiment.

[0029] Figure 10Schematic three-dimensional structure diagram of the anti-loosening rope pressing wheel set (initial state) in the second embodiment.

[0030] In the figure: 1. Chassis, 2. Base plate, 3. Spring fixing pin, 4. Split pin, 5. Tension spring, 6. Rope pressing wheel, 7. Steel wire rope, 8. Swing arm, 9. Rotating shaft, 10. Rope opening device, 11. Mounting plate for rope pressing wheel shaft, 12. Split pin, 13. Fixed plate for spring fixing pin, 14. Vertical plate, 15. Limit block, 16. Baffle plate. Detailed implementation mode

[0031] In Figure 1 and Figure 6 In the illustrated structure, the chassis 1 is the base of the anti-loosening rope pressing wheel set and also the base on which other components in the anti-loosening rope pressing wheel set are directly or indirectly mounted.

[0032] Figure 1 and Figure 6 As can be seen in

[0033] In the embodiments of the present invention, the track is used as a reference system, and there are definite horizontal, longitudinal and height directions, where the horizontal direction is also called the width direction, left-right direction, and the longitudinal direction is also called the length direction, front-back direction.

[0034] Although in some applications, the surface of the rope pressing wheel 6 for pressing the rope forms a certain angle with the horizontal plane, in more applications, the surface of the rope pressing 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 rope pressing wheel 6 is a vertical line, and the surface of the rim of the rope pressing wheel for pressing the rope is represented as a horizontal plane under this condition.

[0035] It should be known that the orientation problem has nothing to do with the structure or configuration of the present invention and is only used to conveniently describe the anti-loosening rope pressing wheel set in the embodiments of the present invention.

[0036] Figure 1 and Figure 6 In the illustrated structure, the chassis 1 is generally a cabin structure, and this cabin 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 strip characteristics due to its relatively large aspect ratio of length to width.

[0037] Wherein, the horizontal direction of the base plate 2 is the extension direction of its long side, and the longitudinal direction is the extension direction of the short side of the base plate 2.

[0038] Figure 3 and Figure 8 As can be seen in Figure 1 and Figure 6It is shown as a double isosceles trapezoid structure in the figure. The lower base of the isosceles trapezoid structure at the lower part is the small base, which constitutes the lower edge of the vertical plate 14. It is fixedly connected to the bottom plate 2 by means of this lower edge, generally by welding. In some implementations, the two vertical plates 14 and the bottom plate 2 can be cut as a whole, and then bent at the lower edge of the vertical plate 14.

[0039] The two vertical plates 14 are generally parallel to each other. The two vertical plates 14 and the bottom plate 2 cooperate to form a generally trough-shaped structure, which is denoted as a trough-shaped structure for the convenience of description.

[0040] The trough-shaped structure is sealed at both ends in the left-right direction by end plates. The end plates and the ends of the trough-shaped structure are generally also fixedly connected by welding.

[0041] 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. 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, namely 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.

[0042] Furthermore, in Figure 5 and Figure 10 In the illustrated structure, it can be seen that the side notch part is sealed by a sealing plate, and the length-width ratio of the sealing plate is larger than that of the side notch, or can be exactly equal.

[0043] In a preferred embodiment, the sealing plate and the plate body that determines the side notch are also fixedly connected by welding.

[0044] The sealing plate is provided with an elongated hole for connecting to the guide rail member, such as using track bolts.

[0045] 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.

[0046] The rope pressing wheel 6 generally adopts a single rim wheel body for pressing the rope. Obviously, the rim 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.

[0047] From Figure 5 and Figure 10As can be seen from the exemplary structure, a 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 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 rope pressing wheel shaft mounting plate 11 does not necessarily have to adopt an ear plate structure. Relatively speaking, the ear plate structure is relatively compact.

[0048] In the width direction, the two ear plates are located on both sides of the steel wire rope 7 respectively. For the sake of distinction, the two rope pressing wheels are respectively called the first rope pressing wheel and the second rope pressing wheel, and the corresponding two ear plates are called the first ear plate and the second ear plate respectively. The other components associated with the first rope pressing wheel and the second rope pressing wheel are correspondingly described with "first" and "second".

[0049] At the same time, the rope pressing wheel 6 and the swing arm 8 are used as general terms. Among them, the swing arm 8 is a strip plate.

[0050] Among them, the first 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 steel wire rope 7 axially from the first side of the first rotating shaft. The axial direction of the first rotating shaft is Figure 1 and Figure 6 in the up-down direction in the shown state. The first rope pressing wheel presses the steel wire rope 7 downward from the left side of Figure 2 .

[0051] Correspondingly, the first rope pressing wheel is correspondingly mounted at the other end of the first swing arm. Thus, it can be seen that the rope pressing wheel 6 and the rotating shaft 9 are located at both ends of the swing arm 8.

[0052] Similarly, the configuration of the second rope pressing wheel is the same as that of the first rope pressing wheel, which will not be repeated here. The second rope pressing wheel presses the steel wire rope 7 from the other side, such as Figure 2 pressing the steel wire rope 7 from the left side in

[0053] In the direction along the steel wire rope 7, the positions of the first rope pressing wheel and the second rope pressing wheel have a certain layout distance in the front-back direction, so as to present a state as shown in Figure 2 . Furthermore, when the rope splitter 10 passes through, for example, the first rope pressing wheel and the second rope pressing wheel collide with the rope splitter 10 successively, and the window for the steel wire rope 7 to simultaneously break away from the pressing of the two rope pressing wheels 6 is reduced. The direction along the steel wire rope 7 is the front-back direction, which is also the extending direction of the steel wire rope 7.

[0054] 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. Based on 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 simultaneously break away from the pressing; this center distance should not be too large either, otherwise it will result in only one rope pressing wheel 7 being 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.

[0055] In addition, in order to further make the overall structure more compact, the angle between the extension direction of the provided tension spring 5 and the extension direction of the swing arm 8 should not be too small. More precisely, the extension direction of the swing arm 8 is the extension direction of the center line connecting the rope pressing wheel 6 and the rotating shaft 9 on the swing arm 8. The spring for resetting generally uses the tension spring 5, which is a relatively typical two-force member. The angle between the stretching direction of the tension spring 5 and the extension direction of the center line should not be less than 30°, so as to ensure that the tension spring 5 has a relatively large moment arm.

[0056] In Figure 2 and Figure 7 In the illustrated structure, the rope pressing wheel 6 is in an initial state, which 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 of the steel wire rope 7 is equal to the diameter of the rim of the first rope pressing wheel.

[0057] The first rope pressing wheel and the second rope pressing wheel use the same rope pressing wheel 6, that is, the two rope pressing wheels 6 have the same size specifications.

[0058] In the embodiments of the present invention, 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 In 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 In 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.

[0059] In Figure 8 In 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 visible from Figure 9 the illustrated structure is that in the initial state, the angle between the tension spring 5 and the extension direction of 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 is, provided 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.

[0060] In some embodiments, for the case where two swing arms 8 share one tension spring 5, the connection position of the tension spring 5 and the swing arm 8 can be offset towards the middle of the swing arm 8. This will bring another problem, that is, the installation space of the tension spring 5 will be restricted relatively greatly, and only a tension spring 5 with a relatively small length can be selected.

[0061] 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 chassis 1; one end of the second tension spring is connected to the second swing arm, and the other end is connected to the chassis 1. In such embodiments, the selection of the connection positions of the first tension spring and the second tension spring to the chassis 1 is relatively flexible.

[0062] In Figure 3 In the illustrated structure, a spring fixing pin 3 is installed on the upper surface of the bottom plate 2 of the chassis 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 has 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.

[0063] 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 is used to limit the hook rings, for example.

[0064] Regarding the connection between the tension spring 5 and the swing arm 8, a tension spring pin connection method can also be adopted.

[0065] 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, that is, a tension spring pin fixed on the swing arm 8.

[0066] Furthermore, in the initial state, when the first rope pressing wheel and the second rope pressing wheel share a tension spring 5, the included 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°; 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 included 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°.

[0067] In Figure 2 and Figure 6 In the illustrated structure, in the front-rear 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 in the same direction, such as the front; 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 in the same direction, such as the rear. Based on this, the state where the two rope pressing wheels 6 are installed in the reverse direction as shown in the figure is formed, which can make the overall structure more compact. At the same time, it can enable the two rope pressing wheels 7 to contact the rope opener 10 successively instead of simultaneously.

[0068] In Figure 5 and Figure 10In 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.

[0069] 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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