Rocker platform device

Abstract

The application discloses a rocker platform device, which comprises a rocker platform, a rocker installed on a bearing seat through a rotating shaft, the end of the rocker is provided with a lap joint for lapping with an inner rail of a cage, the lower side of the rocker is provided with a connecting arm, the connecting arm is provided with a through hole, the axis of the through hole is parallel to the axis of the bearing seat, a lifting platform is arranged below the connecting arm and is provided with a platform part, and a pin shaft assembly is installed on the platform part, the pin shaft assembly comprises a pin shaft and a telescopic part for driving the pin shaft to extend or retract, so as to push the pin shaft to insert into or exit from the through hole after the lifting platform is lifted to a position. The rocker platform device can effectively balance the rebound of the steel wire rope caused by the change of the cage load, and the structure is relatively compact.

Description

Technical Field

[0001] This invention relates to a rocker platform device, wherein the rocker platform is generally referred to as a rocker platform, and is a device for connecting, for example, a cage track (hereinafter referred to as a cage track) to, for example, a tunnel track. Background Technology

[0002] In the field of vertical shaft hoisting technology, there is a widely recognized technical problem: for example, cages often need to be suspended at the shaft location by a hoisting wire rope. Since vertical shafts are generally quite deep, and especially with the depletion of relatively shallow coal seams, the development of deeper coal seams is increasing, leading to more and more deep shafts exceeding 600 meters in depth. When the cage is lowered into position, the long suspended wire rope causes significant elastic deformation due to the weight of the cage. When the cage is unloaded, this elastic deformation results in a corresponding amount of deformation, causing a change in the cage's position within the deep shaft. The amount of this change is directly proportional to the length of the suspended wire rope.

[0003] Correspondingly, for example, when a mine car is housed in a cage, after the cage reaches a predetermined point in the shaft, such as the entrance to a roadway, a rocker arm platform is needed to bridge the track inside the cage with the track in the roadway. Understandably, as the mine car leaves the cage, the load on the cage will gradually or suddenly decrease, and the amount of elastic deformation of the wire rope will change accordingly, causing the cage to be lifted uncontrollably. The bridging conditions of the rocker arm platform will change suddenly, which can easily lead to an accident.

[0004] In view of this, typically, Chinese patent document CN100532240C discloses a cage stabilizing mechanism and device for vertical shaft cage hoisting. The cage stabilizing mechanism includes a support, a stabilizing arm, a catcher, and a buffer cylinder. The stabilizing arm is hinged to the support, and the catcher is mounted on the stabilizing arm. The catcher is composed of a hydraulic cylinder or a pneumatic cylinder and is hinged to a push rod, which passes through a slide at the front end of the stabilizing arm. The buffer cylinder is supported below the front arm of the stabilizing arm, and one set of stabilizing devices consists of two stabilizing mechanisms. During operation, when the cage is hoisted to its position, the four catchers activate simultaneously. The hydraulic cylinder pushes four push rods to simultaneously extend into pre-drilled holes on the cage end beam, securing the cage. The buffer cylinder locks the stabilizing arm in a horizontal position. Then, the rocker platform (i.e., the rocker arm platform) is lowered for loading and unloading of heavy vehicles. During loading operations, after loading and unloading are completed and the jacking platform is raised, the buffer cylinder slowly moves downward under the load to release the elongation energy of the lifting wire rope caused by the increased weight. During unloading operations, after unloading of the loaded vehicle is completed and the jacking platform is raised, the buffer cylinder slowly moves upward under the load to release the contraction of the lifting wire rope caused by the reduced weight.

[0005] The cage stabilizing device disclosed in Chinese patent document CN100532240C solves to some extent the problem of cage floating caused by changes in load within the cage. However, each stabilizing device includes two stabilizing mechanisms, each with two catchers, resulting in a relatively complex overall structure. Furthermore, since the stabilizing device in this patent document operates on the cage, the cage often floats vertically due to inertia when stopped, making it difficult to align the catcher's push rod with the hole in the cage's end beam in a short time. In particular, to achieve reliable locking, a tight fit is often required between the hole and the push rod, or a small gap is needed. Under these conditions, aligning the push rod with the hole becomes even more difficult when the cage is floating vertically.

[0006] Chinese patent document CN106744217A discloses a support and locking device similar to a cage base. It employs a flexible support and locking mechanism and a curved swing overlap mechanism to reliably lock the cage. Both mechanisms are mounted on a base with a lifting mechanism. The lifting mechanism drives the flexible support and locking mechanism to move downwards or downwards along the base as a whole, automatically compensating for the elastic deformation of the wire rope. In other words, it relies on the flexible support and locking mechanism for adaptive adjustment. The support and overlap mechanism overcome the alignment problem between the push rod and the hole during installation. It also includes a lifting mechanism to adjust the position of the flexible support and locking mechanism. However, the adaptive nature of the flexibility itself means that the cage floats with the load during use, and the cage's current position still changes with the load. Summary of the Invention

[0007] The purpose of this invention is to provide a rocker platform device that can effectively balance the rebound of the wire rope caused by changes in cage load, while also having a relatively compact structure.

[0008] In an embodiment of the present invention, a rocker platform device is provided, comprising:

[0009] The rocker arm platform has a bearing housing and a rocker arm mounted on the bearing housing via a pivot. The end of the rocker arm has an overlap joint for engaging with the track inside the tank. The lower side of the rocker arm is provided with a connecting arm, which has a through hole whose axis is parallel to the axis of the bearing housing.

[0010] The lifting platform is located below the connecting arm and has a platform section;

[0011] A pin assembly is mounted on the platform section. The pin assembly includes a pin and a telescopic part that drives the pin to extend or retract, so as to push the pin into or out of the through hole after the lifting platform is raised or lowered into position.

[0012] Optionally, the connecting arm includes an ear plate, and the via is configured as follows:

[0013] The ear plate holes form the basic holes;

[0014] Pin sleeves are extended from both ends of the base hole or a pin sleeve is inserted into the base hole, and the pin sleeve hole of the pin sleeve constitutes the through hole.

[0015] Optionally, a guide sleeve with the pin sleeve as the hinge axis is provided;

[0016] The side of the guide sleeve is open to allow the pin to pass through;

[0017] Accordingly, the lifting platform is provided with a guide structure that guides or guides the guide sleeve in the vertical direction; the side of the guide structure is open accordingly.

[0018] Optionally, the guide structure is a lower U-shaped component with an upward opening, while the guide sleeve is an upper U-shaped component with a downward opening;

[0019] Accordingly, the lower U-shaped component and the upper U-shaped component are interlocked to form a guide pair.

[0020] Optionally, pin holes are opened on the arm of the lower U-shaped component.

[0021] Optionally, constraint assemblies are provided on the front and rear sides of the guide structure to limit the range of motion of the guide structure in the front-rear direction.

[0022] Optionally, the connecting arms are a pair, one on the left and one on the right, arranged on both sides of the rocker platform;

[0023] The telescopic part is located between the two connecting arms and includes a pair of synchronously driven linear motion components or a linear motion component with double push rods.

[0024] Correspondingly, if it is a linear motion component with two push rods, the two push rods are located at both ends of the linear motion component base;

[0025] If it is a pair of synchronously driven linear motion components, the two linear motion components are arranged back to back, and the axes of the corresponding two push rods are collinear.

[0026] Optionally, the linear motion component is a pin-driven hydraulic cylinder.

[0027] Optionally, the lifting platform includes a pair of hydraulic cylinders, with one hydraulic cylinder on each side of the lower side of the platform.

[0028] Accordingly, the push rod of the hydraulic cylinder is pushed upward, and the seat end is hinged.

[0029] Optionally, a sensor is provided on the platform to detect whether the connecting arm is in position;

[0030] The platform is equipped with a sensor for detecting when the pin is extended or retracted.

[0031] In embodiments of the present invention, a technical condition is employed whereby, after the cage is positioned, the rocker arm on the rocker platform needs to be rotated to the cage door, and the lap joint of the rocker arm can lap with the track inside the cage. If the rocker arm exerts sufficient downward pressure at this point, even if the cage load decreases due to unloading, the pressure applied by the rocker arm through the lap joint is sufficient to balance the reduced load, preventing a sudden upward lift of the cage. This invention utilizes this technical condition to provide a lifting platform. After the cage is positioned, the cage door is opened, the rocker platform is driven, and the rocker arm laps with the track inside the cage. The lifting platform then rises, causing the pin on the loaded pin assembly to rise into position. A connecting arm is provided on the lower side of the rocker arm, with a through hole. When the pin rises to position, the through hole aligns with the pin. Then, the telescopic part on the pin assembly drives the pin to insert into the through hole. The cage is then unloaded, and the rebound force of the wire rope generated during unloading is mainly borne by the lifting device. After unloading is complete, the lifting device continues to rise. Once the rise reaches the required rebound amount of the wire rope, the pin assembly resets, thus completing the smooth unloading of the cage. Compared to traditional methods for smooth cage unloading, the rocker platform device provided in this embodiment of the invention, based on a rocker platform, only adds a connecting arm to the lower side of the rocker arm and provides a lifting platform, resulting in a relatively compact structure. Furthermore, it has fewer moving parts and relatively better reliability. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the main structure of the rocker platform device in one embodiment.

[0033] Figure 2 This is a schematic diagram of the left side of the rocker platform device in one embodiment.

[0034] Figure 3 This is a schematic diagram of the locking process of the rocker platform device in one embodiment.

[0035] Figure 4 This is a schematic diagram of the guide portion of the rocker arm in one embodiment.

[0036] In the diagram: 1. Hinge, 2. Hydraulic cylinder, 3. Limit switch, 4. Bearing housing, 5. Rocker arm platform, 6. Limit switch, 7. Pin, 8. Limit switch, 9. Pin cylinder, 10. U-shaped port, 11. Pin sleeve, 12. Connecting arm, 13. Pin hole, 14. Lifting platform, 15. Rotating shaft, 16. Key, 17. Rocker arm, 18. Guide device, 19. Guide device, 20. Overlap joint, 21. Seat plate, 22. Guide sleeve. Implementation

[0037] In the field of transportation equipment technology, there are usually definite front, back, left, and right directions. For example, the extension direction of a track generally refers to the front-back direction, while the width direction of the track is called the left-right direction, and left and right are often referred to as the sides. Figure 2 As shown, rocker arm 17 is used to bridge the tank's internal track with, for example, a tunnel track. Figure 2 The left and right directions in this context refer to the front and back directions in the field of transportation equipment technology. Figure 2 The view shown is the left view.

[0038] In addition, from the perspective of the overlap, the end where the overlap joint 20 of the rocker arm 17 is located can also be called its front end.

[0039] exist Figure 2 In the structure shown, the rotation range of the rocker arm 17 is typically greater than 90 degrees. In other words, the rocker arm 17 can rotate more than 90 degrees and only needs to be flipped over when the cage is in position. Figure 2 The state shown is not necessarily absolutely precise, as the position of the cage itself is also not precise. Furthermore, the method of driving the rocker arm 17 is not an improvement of this invention and will not be elaborated upon here; these are basic configurations in the art.

[0040] Furthermore, the use of the rocker platform device in the embodiments of the present invention does not preclude the use of other equipment, such as a cage support, which can support the cage from below at a predetermined position in the tunnel.

[0041] Figure 1 and Figure 2 The illustrated rocker platform device first involves a slight modification to the rocker platform 5. Then, a lifting platform 14 is installed below the side of the rocker platform 5 closest to the cage. "Closest" here means, considering interference avoidance clearance, that it should be as close to the cage as possible. However, it generally requires a clearance of at least 5cm for the lap joint 20.

[0042] The joint 20 is a wedge-shaped component located at the end of the rocker arm 17 in the figure. Based on the principles of this invention, it can be understood that if the lifting platform 14 is too close to the bearing seat 4 of the rocker arm 17, for example... Figure 2 The control accuracy of hydraulic cylinder 2 will be significantly affected. For the same extension of hydraulic cylinder 2, the closer the position of hydraulic cylinder 2 acts on rocker arm 17 to bearing seat 4, the greater the rotation angle of rocker arm 17, and vice versa. Therefore, as shown in the example... Figure 2 Starting from the left end shown, it is more appropriate for the lifting platform 14 to be located at a length of 0.65 to 0.75 of the total length of the rocker arm 17 (including the lap joint 20) (measured at the midpoint of the lifting platform 14 in this direction).

[0043] First, let's look at the basic structure of the rocker platform 5. The rocker platform 5 can be understood as a swing frame with a predetermined width, supporting a pair of bridging track sections. Since the speed of mine cars when they drive out of or into the cage is relatively slow, whether the bridging track sections are tightly connected to the tracks inside the cage does not affect the movement of the vehicle. Therefore, under normal overlapping conditions, the rocker arm 17 is allowed to have a certain angle with the horizontal plane, as long as it is not too large, for example, no more than 15 degrees.

[0044] The rocker platform 5 is generally installed at the wellhead or tunnel entrance. As for how the bearing housing 4 is installed at the wellhead, for example, it is common knowledge in this field and will not be elaborated here.

[0045] The rocker platform 5 typically includes a pair of bearing seats 4, with corresponding two bearing seats 4 facing each other on both sides of the rocker platform 5. The rocker assembly of the rocker platform 5 is mounted on the bearing seats 4 via a pivot 15, with the two ends of the pivot 15 supported on the corresponding bearing seats 4.

[0046] Based on the rotational connection between the rocker arm 17 and the bearing housing 4, the rocker arm 17 has the freedom of swing. For ease of description, the end of the rocker arm 17 connected to the bearing housing 4 is called the connecting end, which can also be called the root, while the end of the rocker arm 17 is the lap joint 20 used to connect with the track inside the tank, and the end of the rocker arm 17 is also called the head.

[0047] See Figures 1-4 In the illustrated structure, a connecting arm 12 is provided on the lower front side of the rocker arm 17. The connecting arm 12 has a through hole, the axis of which is parallel to the axis of the bearing seat 4. The through hole is generally a round hole, but the use of other types of holes is not excluded.

[0048] The through hole can also be understood as a lock hole, used to lock the rocker arm 17 on the lifting platform 14 by means of, for example, a pin 7. The pin 7 here is similar to a latch, and its basic movement is linear. The realization of the purpose of this invention depends on preventing the cage from floating violently up and down during unloading or loading in the vertical shaft direction. In other words, the locking should be in this direction, that is, vertical locking. After loading or unloading is completed, the lifting platform 14 can accommodate the amount of elastic recovery of the wire rope.

[0049] Therefore, the lifting platform 14 should be located below the connecting arm 12. It should be noted that the reason for using the connecting arm 12 as a reference is that when the lifting platform 14 needs to move, the rocker arm 17 is already in contact with the cage. The fact that the lifting platform 14 is located below the connecting arm 12 is not beyond the correct understanding of those skilled in the art.

[0050] For ease of description, the part of the lifting platform 14 used to support items is referred to as the platform section, and the items supported are mainly the pin assembly.

[0051] Furthermore, regarding the pin assembly, it is naturally mounted on the platform section, and it naturally includes the pin 7 and the driving part that drives the pin 7, which is referred to as the telescopic part. As mentioned above, the pin 7 is actually equivalent to a pin, and the basic action of the pin is linear motion. Locking or unlocking is achieved based on the linear motion, which can be simply referred to as telescopic.

[0052] Therefore, the pin assembly includes a pin 7 and a telescopic part that drives the pin 7 to extend and retract. Here, the extension and retraction is relative to the axial direction of the through hole. Accordingly, through this extension and retraction movement, the pin is pushed into the through hole after the lifting platform is raised and lowered to the position, and then exits the through hole after unloading and the lifting platform is adjusted.

[0053] Regarding the connecting arm 12, its dimensions in the vertical direction should not be too large. Therefore, in a preferred embodiment, the main structure of the connecting arm 12 is an ear plate. Alternatively, to avoid assembly interference, the connecting arm 12 can be extended downward by a larger distance. However, in the embodiments of the present invention, compactness is the primary objective.

[0054] The via can be a hole formed on the ear plate, or it can be a hole formed on the ear plate as a base hole, and then a wear-resistant sleeve is inserted into the base hole, with the hole of the wear-resistant sleeve as the via.

[0055] In addition, based on the overall characteristics of the plate body, the thickness of the ear plate determines that the axial length of the through hole is relatively small, while the wear-resistant sleeve can be relatively long to improve the reliability of the guide.

[0056] The wear-resistant sleeve can be, for example, a tin bronze sleeve, primarily used to improve wear resistance. From a support perspective, a pin sleeve 11 is inserted into, for example, the base hole. The pin sleeve 11 can be made of, for example, 45# steel or Q235 steel. The inner surface of the pin sleeve 11 can be inlaid with a wear-resistant sleeve or form a wear-resistant layer, thus making the pin sleeve 11 a composite sleeve. The wear-resistant layer can be, for example, a polytetrafluoroethylene coating.

[0057] The pin sleeve 11 can be threaded to the base hole for easy replacement.

[0058] The pin sleeve 11 can also be welded to the base hole.

[0059] The length of the pin sleeve 11 is about twice the thickness of the ear plate, generally 1.5 to 2.5 times, and it is set symmetrically, that is, the length of the pin sleeve 11 exposed at both ends of the base hole is basically the same.

[0060] In addition, the end of the pin sleeve 11 facing the pin shaft 7 may have a chamfer; correspondingly, the end of the pin shaft 7 may have a chamfer, or the end of the pin shaft 7 may have a guide cone, such as a conical head, a ball head, or an elliptical head, to facilitate the smooth insertion of the pin shaft 7 into the through hole.

[0061] like Figure 2 The illustrated rocker platform assembly represents an ideal state, in which the internal track and rocker arm 17 are horizontally bridged. This assumes the cage is accurately positioned. Under these conditions, achieving precise alignment between the pin assembly and the through-hole on the lifting platform is relatively easy.

[0062] However, since the cage docking is generally not precise, there is an angle between the rocker arm 17 and the horizontal plane, which will cause the through hole to deviate in the horizontal direction. If the movement of the lifting platform is purely vertical, it is difficult to make the pin 7 and the through hole accurately aligned.

[0063] Therefore, please refer to the appendix to the instruction manual. Figure 3 and 4 A guide sleeve 22 is provided with the pin sleeve 11 as the hinge axis, and the upper ends of the guide sleeve 22 are mounted on the pin sleeve 11.

[0064] Specifically, the guide sleeve 22 may have a pair of parallel connecting plates on opposite sides, with hinge shaft holes aligned on the two connecting plates. When the pin sleeve 11 passes through the hole, the hinge shaft hole also passes through at the same time, thus forming a configuration with the pin sleeve 11 as the hinge shaft. At this time, the guide sleeve 22 has a swing degree of freedom with the axis of the pin sleeve 11 as the axis.

[0065] Accordingly, since the hinge hole exists and the hinge hole is fitted onto the pin sleeve 11, the presence of the connecting plate does not affect the passage of the pin 11.

[0066] The side opening of the guide sleeve 22 does not mean that it is completely open. As can be seen from the aforementioned purpose, the opening is mainly for the passage of the pin 11. Under this condition, it is possible to further reduce the weight by constructing the side opening form in the way of reducing the weight hole.

[0067] Furthermore, the lifting platform 14 is provided with a guide structure that guides or guides the guide sleeve 22 in the vertical direction; the side of the guide structure is correspondingly open.

[0068] Regarding the cooperation relationship between the guide sleeve 22 and the guide structure, in some embodiments the guide structure can be a sleeve-shaped structure with an opening at the top, and the guide sleeve 22 is embedded into the sleeve-shaped structure through the opening at the top.

[0069] Based on the above description, it can be seen that before the pin 7 and, for example, the pin sleeve 11 are accurately aligned, the guide sleeve 22 and the sleeve structure provide pre-guidance, which is beneficial for the accurate positioning of the pin 7 and, for example, the pin sleeve 11.

[0070] For example, the opening of the sleeve structure can be flared, that is, a tapered opening that is larger at the top and smaller at the bottom, to facilitate the introduction of the guide sleeve 22.

[0071] In some embodiments, the guide sleeve 22 is always engaged with the sleeve structure. Under this condition, the rotation angle of the rocker platform 5 is limited. Without affecting the lifting of the cage, these embodiments allow the guide sleeve 22 to always be engaged with the sleeve structure without the need for other auxiliary guiding devices.

[0072] Accordingly, the lifting platform should also have the freedom to swing to accommodate changes in the horizontal position of the guide sleeve 22. Figure 1 and 2 In the structure shown, the main component used to achieve lifting is the hydraulic cylinder 2. As can be seen from the figure, the cylinder seat of the hydraulic cylinder 2 is mounted on the frame via the hinge shaft 1.

[0073] like Figure 2 As shown in the figure, an auxiliary guiding device is also provided, such as guide device 19 and guide device 18 shown in the figure. The two are opposite each other in the front-rear direction to define, for example, the swing range of hydraulic cylinder 2.

[0074] It is obvious that the axis of hinge 1 is parallel to the axis of bearing seat 4, so the swing plane of hydraulic cylinder 2 is parallel to the swing plane of rocker arm 17.

[0075] The swing range of the hydraulic cylinder 2 is limited by the guide device 18 and the guide device 19 to facilitate the alignment of the guide sleeve 22 with, for example, a sleeve-shaped structure.

[0076] In view of the fact that the embodiments of the present invention are limited to improvements of the rocker platform device itself, the main focus is on the rocker platform device itself. For example, how the hydraulic cylinder 2 is installed through the hinge shaft 1 is not within the scope of the embodiments of the present invention. The frame may be, for example, a seat pre-embedded in the foundation, or other structures.

[0077] In some embodiments, the guide structure is a lower U-shaped component with an upward opening, while the guide sleeve 22 is an upper U-shaped component with a downward opening. The lower U-shaped component and the upper U-shaped component have a defined dimensional fit relationship, which can satisfy the need for mating to construct a guide pair by defining the joint between the arms of the U-shape.

[0078] Furthermore, the U-shaped structure naturally provides an open structural section on the side.

[0079] Since the upper U-shaped component and the lower U-shaped component mainly serve a guiding function and have a relatively small load, both can be made of sheet metal. Therefore, the arm body can be a plate body, and the vertical edge of the plate body can have a flange, that is, the arm body is roughly groove-shaped to constrain the movement of the guiding pair.

[0080] For example, the arm of the lower U-shaped component is a groove, and the arm of the upper U-shaped component is a plate that inserts into the groove.

[0081] In addition, the mating surfaces of the guide pair may have, for example, a polytetrafluoroethylene (PTFE) sliding plate to reduce the friction between the components forming the guide pair.

[0082] Accordingly, the lower U-shaped component and the upper U-shaped component are interlocked to form a guide pair.

[0083] Since both the lower U-shaped component and the pin assembly are located on the lifting platform 14, and the main motion of the lifting platform 14 is, for example, the swinging of the hydraulic cylinder 2 based on the hinge 1, which causes the entire lifting platform 14 to swing. The remaining components are carried on the platform section. In other words, the lower U-shaped component and the pin assembly are moving parts based on the overall movement of the lifting platform 14, and are static to each other except for the pin 7.

[0084] Furthermore, the pin holes 13 on the lower U-shaped component are precisely aligned, making it easy to insert the pin 7.

[0085] Therefore, in the embodiments of the present invention, the pin 7 is through which multiple components are inserted, and the connection reliability is relatively good.

[0086] Furthermore, in some embodiments, the distance between the two arms of the lower U-shaped component can be slightly larger, so that the connection of the pin 7 has a certain span, thereby having better connection reliability.

[0087] Considering the overall shear resistance, the sum of the distance between the two arms of the lower U-shaped component and the length of the two pin holes 13 (i.e., the width of the lower U-shaped component in the axial direction of the pin 7) is 2.5 to 4 times the diameter of the pin 7. That is, the diameter of the associated pin 7 and the total length of the pin 7 (the distance between the two arms of the lower U-shaped component affects the design of the length of the pin 7) are used to make the overall shear resistance relatively good.

[0088] The auxiliary guide device is described below. As mentioned earlier, auxiliary guide devices are provided on the front and rear sides of the lifting platform 14 to constrain the range of movement of the lifting platform 14 in the front and rear directions of the rocker platform 5. It can be seen that the auxiliary guide device can also play a limiting role.

[0089] Furthermore, the range of motion of the lifting platform 14 in the forward and backward directions of the rocker platform 5 is obviously affected by, for example, the swing range of the hydraulic cylinder 2, while the swing range of the hydraulic cylinder 2 is affected by, for example... Figure 2The influence of the distance between the middle guide device 18 and the guide device 19.

[0090] Another point involves the design basis, namely, the rebound amount of the wire rope corresponding to the extension range of, for example, hydraulic cylinder 2. Anyone with a little life experience knows that, for example, the principle of a conventional vertical shaft elevator is similar to that of a cage-and-rail system. If properly adjusted, the elongation of the elevator wire rope between no load and maximum load is not significant. Correspondingly, mining equipment has higher safety requirements. In other words, even if the mine car is relatively heavy, the wire rope used in the cage is also larger. The elongation of the wire rope between no load and full load is not very large. Therefore, the required adjustment range of, for example, hydraulic cylinder 2 is not very large. Consequently, the distance between guide device 18 and guide device 19 does not need to be too large. Generally, a swing range of about 7 degrees for the hydraulic cylinder is sufficient.

[0091] If the wire rope of the cage is properly adjusted, the hydraulic cylinder can have a smaller swing range, such as 3 to 5 degrees.

[0092] Figure 2 In the middle, the guide device 19 located on the front side of the lifting platform 14 is a channel steel component, and its crossbar is on the front side of the lifting platform 14. The guide surface provided can be, for example, 3~5cm on the front side of the lifting platform 14 when the hydraulic cylinder 2 is in a vertical state.

[0093] The guide device 18 located at the rear of the lifting platform 14 includes a relatively large channel steel member, which serves as a beam to provide support. A sloping slide is provided on the front side of the beam to facilitate the insertion of the guide sleeve 22. It should be noted that the guide sleeve 22 is in a suspended state before engaging with, for example, the lower U-shaped component. Guided by the sloping slide, the guide sleeve 22 deflects during its descent, making it easier to engage with, for example, the lower U-shaped component located on the lifting platform 14.

[0094] The angle between the inclined sliding plate and the horizontal plane is 78 to 80 degrees.

[0095] from Figure 1 As can be seen, due to the relatively large width of the rocker platform 5, a pair of connecting arms 12 are arranged on both sides of the rocker platform, one on each side, to ensure stability. Correspondingly, the telescopic part is located between the two connecting arms 12. The telescopic part includes a pair of synchronously driven linear motion components or linear motion components with double push rods, such as a hydraulic cylinder with a single rod or a hydraulic cylinder with two rods.

[0096] Correspondingly, if it is a linear motion component with two push rods, the two push rods are located at both ends of the linear motion component base. Typically, this is seen in a hydraulic cylinder with two push rods, such as... Figure 1The pin-shaft cylinder 9 shown has good synchronization because it has the same rodless chamber, and the coaxiality between the two push rods is also relatively good due to the guidance of the cylinder head.

[0097] If the two linear motion components are a pair of synchronously driven components, they are arranged back to back, and the axes of the corresponding push rods are collinear. For example, in a pair of hydraulic cylinders, the seats of the corresponding cylinders are opposite each other, that is, the push rods are opposite.

[0098] Similarly, considering stability, the lifting platform 14 includes a pair of hydraulic cylinders 2, with one hydraulic cylinder 2 on each side of the lower side of the platform; correspondingly, the push rod of the hydraulic cylinder 2 is pushed upward and the seat end is hinged.

[0099] In order to be integrated into the cage system, a sensor is provided on the platform to detect whether the connecting arm 12 is in position; and a sensor is provided on the platform to detect whether the pin 7 is extended or retracted.

[0100] Regarding the sensor, a position sensor is preferably used, such as... Figure 1 The limit switches 6 and 8 shown are used together to detect when the pin 7 has extended or retracted into place.

[0101] Limit switch 3 is used to detect whether the connecting arm 12 is in position.

[0102] Regarding, for example, limit switch 3, its contact rod can be on top, and connecting arm 12 gradually moves down until the contact rod is touched, limit switch 3 is activated, and then rocker platform 5 stops.

[0103] For example, limit switch 3 can be replaced by proximity switch, photoelectric sensor, etc.

Claims

1. A rocker arm platform device, characterized in that, include: The rocker arm platform has a bearing housing and a rocker arm mounted on the bearing housing via a pivot. The end of the rocker arm has an overlap joint for engaging with the track inside the tank. The lower side of the rocker arm is provided with a connecting arm, which has a through hole whose axis is parallel to the axis of the bearing housing. The lifting platform is located below the connecting arm and has a platform section; A pin assembly is installed on the platform section. The pin assembly includes a pin and a telescopic part that drives the pin to extend or retract, so as to push the pin into or out of the through hole after the lifting platform is raised or lowered into position. Accordingly, after the cage is in position, the cage door is opened, the rocker arm platform is driven to engage with the rails inside the cage, and then the lifting platform rises, causing the pins on the loaded pin assembly to rise into position; when the pins are in position, the through hole aligns with the pins; then the cage is unloaded, and the rebound force of the wire rope generated during unloading is mainly borne by the lifting device; after unloading is completed, the lifting device continues to rise, and after the rise reaches the required rebound amount of the wire rope, the pin assembly resets, thus completing the smooth unloading of the cage.

2. The rocker platform device according to claim 1, characterized in that, The connecting arm includes an ear plate, and the corresponding through hole is configured as follows: The ear plate holes form the basic holes; Pin sleeves are extended from both ends of the base hole or a pin sleeve is inserted into the base hole, and the pin sleeve hole of the pin sleeve constitutes the through hole.

3. The rocker platform device according to claim 2, characterized in that, A guide sleeve is provided with the pin sleeve as the hinge axis; The side of the guide sleeve is open to allow the pin to pass through; Accordingly, the lifting platform is provided with a guide structure that guides or guides the guide sleeve in the vertical direction; the side of the guide structure is open accordingly.

4. The rocker platform device according to claim 3, characterized in that, The guide structure is a lower U-shaped component with an upward opening, while the guide sleeve is an upper U-shaped component with a downward opening. Accordingly, the lower U-shaped component and the upper U-shaped component are interlocked to form a guide pair.

5. The rocker platform device according to claim 4, characterized in that, The pin hole on the arm of the lower U-shaped component.

6. The rocker platform device according to any one of claims 3 to 5, characterized in that, A constraint assembly is provided on the front and rear sides of the guide structure to limit the range of motion of the guide structure in the front-rear direction.

7. The rocker platform device according to claim 1, characterized in that, The connecting arms are a pair, one on the left and one on the right, arranged on both sides of the rocker platform; The telescopic part is located between the two connecting arms and includes a pair of synchronously driven linear motion components or a linear motion component with double push rods. Correspondingly, if it is a linear motion component with two push rods, the two push rods are located at both ends of the linear motion component base; If it is a pair of synchronously driven linear motion components, the two linear motion components are arranged back to back, and the axes of the corresponding two push rods are collinear.

8. The rocker platform device according to claim 7, characterized in that, The linear motion component is a pin-driven hydraulic cylinder.

9. The rocker platform device according to claim 1, characterized in that, The lifting platform includes a pair of hydraulic cylinders, with one hydraulic cylinder on each side of the lower side of the platform. Accordingly, the push rod of the hydraulic cylinder is pushed upward, and the seat end is hinged.

10. The rocker platform device according to claim 1, characterized in that, The platform is equipped with a sensor to detect whether the connecting arm is in position; The platform is equipped with a sensor for detecting when the pin is extended or retracted.

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