Intrinsically safe cradle lapping device

Abstract

The utility model discloses an intrinsically safe cradle lap joint device which comprises a lap joint arm assembly and a driving assembly. The lap joint arm assembly comprises two lap joint arms arranged in a bilateral symmetry mode and a driving sleeve arranged between the lap joint arms, the lap joint arms are installed on the cradle rack through hinge shaft seats, and the driving assembly is in transmission connection with the driving sleeve; the lap joint arm comprises a lap joint arm body and a driven shaft sleeve fixedly arranged on the rear portion of the inner side face of the lap joint arm body, an arc-shaped flange I is arranged at the inner side end of the driven shaft sleeve, and the arc-shaped flange I comprises a jaw structure I. The driving sleeve comprises a driving shaft sleeve coaxial with the driven shaft sleeve. Arc-shaped flanges II are arranged at the left end and the right end of the driving shaft sleeve, each arc-shaped flange II comprises a jaw structure II, the central angle of each arc-shaped flange I is smaller than that of each arc-shaped flange II, and the arc-shaped flanges I and the arc-shaped flanges II are in lap joint to form a jaw clamping matching mechanism. According to the utility model, the mine vertical shaft hoisting system can be ensured not to be damaged under any working condition.

Description

Technical Field

[0001] This utility model relates to a rocking platform connection device, specifically an intrinsically safe rocking platform connection device suitable for mine vertical shaft hoisting systems, belonging to the field of mine vertical shaft hoisting technology. Background Technology

[0002] A rocking platform is a collapsible cage-receiving device used in mine vertical shaft hoisting systems. It can be used at the mine entrance, bottom roadway, and intermediate section of the shaft. It is a movable platform that connects the car yard plane and the cage plane, ensuring the passage of personnel and vehicles. When the cage arrives, the rocking platform's overlapping mechanism drops to connect the mine entrance (or roadway) and the cage. After the mine car enters or exits the cage along the track, the rocking platform's overlapping mechanism folds up. The rocking platform avoids the disadvantages of receiving beams, cage seats, and other receiving devices that may cause cage slumping. It is widely used in mine vertical shaft hoisting systems.

[0003] The rocker platform and the hoist have a strict interlocking relationship. When the hoist is running, the rocker platform cannot move; when the rocker platform is extended, the hoist cannot run. Currently, the interlocking relationship between the rocker platform and the hoist is usually achieved through sensors and a control system. If the control system malfunctions or the interlocking relationship is disrupted, a situation may occur where the rocker platform extends while the hoist runs. In this state, a mine shaft hoisting accident is highly likely, potentially causing serious damage to the mine's vertical shaft hoisting system and even casualties. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides an intrinsically safe rocking platform connection device that can ensure that no damage is caused to the mine shaft hoisting system under any working conditions.

[0005] To achieve the above objectives, the intrinsically safe cradle table overlapping device includes an overlapping arm assembly and a drive assembly; the overlapping arm assembly includes two overlapping arms arranged symmetrically on the left and right and a drive sleeve disposed between the two overlapping arms, the overlapping arms are mounted on the cradle table frame through a hinged shaft seat; the drive assembly is connected to the drive sleeve in a transmission manner.

[0006] The overlapping arm includes an overlapping arm body and a driven bushing fixedly disposed on the rear side of the inner side of the overlapping arm body. The driven bushing is axially arranged in the left-right direction. An arc-shaped flange I is provided on the inner end of the driven bushing, and the arc-shaped flange I includes a toothed structure I. The overlapping claw is hinged to the front end of the overlapping arm by an overlapping claw pin, and the overlapping claw extending forward is positioned on the overlapping arm body by a safety pin. The drive sleeve includes an active bushing coaxially disposed with the driven bushing. Both ends of the active bushing are provided with arc-shaped flanges II, and the arc-shaped flanges II include a toothed structure II. The central angle of the arc-shaped flange I is smaller than the central angle of the arc-shaped flange II, and the arc-shaped flanges I and II overlap to form a toothed engagement mechanism. A support shaft is rolled through the active bushing, and both ends of the support shaft pass through the overlapping arm body and are mounted on the rocking table frame through a hinged shaft seat.

[0007] As a further improvement of this utility model, a rocker arm is fixedly provided on the active shaft sleeve, and the rocker arm extends out along the radial direction of the active shaft sleeve; the drive assembly includes a telescopic drive component, the base end of the telescopic drive component is hingedly mounted on the rocking table frame, and the telescopic end of the telescopic drive component is hingedly connected to the rocker arm.

[0008] As a preferred embodiment of this utility model, the telescopic drive component is a hydraulic cylinder structure.

[0009] Compared with existing technologies, the intrinsically safe rocking platform overlapping device features forward-extending overlapping claws positioned on the overlapping arm body via safety pins inserted into shear pin holes. Because the central angle of arc-shaped flange I is smaller than that of arc-shaped flange II, and arc-shaped flange I and arc-shaped flange II overlap to form a toothed engagement mechanism, when the control system malfunctions or the interlocking relationship is disordered, the overlapping arm swings in a horizontal overlapping state. If the cage or other external forces impact the overlapping claws from above, the safety pins can shear and break under the external force. In this case, the overlapping claws can fold downwards along the central axis of the overlapping claw pin shaft to avoid impact, thus not affecting the downward movement of the cage and preventing damage to the mine shaft hoisting system. If the cage or other external forces impact the overlapping claws from below, the overlapping arm can swing upwards within the idle stroke angle C of the driven shaft sleeve to avoid impact, thus not affecting the upward movement of the cage and similarly preventing damage to the mine shaft hoisting system. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the present invention in the overlapping cage state;

[0011] Figure 2 This is a three-dimensional structural schematic diagram of the overlapping arm assembly of this utility model from the left front view.

[0012] Figure 3 This is a three-dimensional structural schematic diagram of the overlapping arm assembly of this utility model from the left rear view.

[0013] Figure 4 This is a three-dimensional structural schematic diagram of the overlapping arm of this utility model;

[0014] Figure 5 This is a three-dimensional structural schematic diagram of the drive sleeve of this utility model;

[0015] Figure 6 This is a schematic diagram of the structure of this utility model in which the overlapping claws fold downwards to avoid impact when the cage strikes the overlapping claws from above.

[0016] In the figure: 1. Overlapping arm assembly, 1-1. Overlapping arm, 1-1-1. Driven bushing, 1-1-2. Overlapping arm body, 1-2. Overlapping claw, 1-3. Hinge bearing, 1-4. Drive sleeve, 1-4-1. Swing rod, 1-4-2. Drive bushing, 1-5. Overlapping claw pin, 1-6. Safety pin, 1-7. Support shaft, 2. Cradle frame, 3. Drive assembly;

[0017] AⅠ is the meshing surface of the driven bushing, BⅠ is the yielding surface of the driven bushing, AⅡ is the meshing surface of the driving bushing, and BⅡ is the yielding surface of the driving bushing. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings (hereinafter referred to as...). Figure 1 , Figure 6 (The left side is described as the front).

[0019] like Figure 1 , Figure 6 As shown, the intrinsically safe rocking platform lap joint device includes a lap joint arm assembly 1 and a drive assembly 3.

[0020] like Figure 2 , Figure 3 As shown, the overlapping arm assembly 1 includes two overlapping arms 1-1 arranged symmetrically on the left and right sides, and a drive sleeve 1-4 disposed between the two overlapping arms 1-1; as Figure 4As shown, the overlapping arm 1-1 includes an overlapping arm body 1-1-2 and a driven bushing 1-1-1 fixedly disposed on the rear inner side of the overlapping arm body 1-1-2. The driven bushing 1-1-1 is axially arranged in the left-right direction. An arc-shaped flange I is provided on the inner end of the driven bushing 1-1-1, and the arc-shaped flange I includes a toothed structure I. The toothed structure I includes a meshing surface AⅠ at the front and a yielding surface BⅠ at the rear. Both the front end of body 1-1-2 and the overlapping claw 1-2 are provided with hinge shaft holes 1-1-3 and shear pin holes 1-1-4 arranged axially in the left and right directions. The overlapping claw 1-2 is hinged to the front end of the overlapping arm 1-1 by an overlapping claw pin 1-5 passing through the hinge shaft hole 1-1-3. The overlapping claw 1-2, which extends forward, is positioned on the overlapping arm body 1-1-2 by a safety pin 1-6 passing through the shear pin hole 1-1-4. Figure 5 As shown, the drive sleeve 1-4 includes a drive sleeve 1-4-2 coaxially arranged with the driven sleeve 1-1-1 and a rocker arm 1-4-1 fixedly arranged on the drive sleeve 1-4-2 radially. Both ends of the drive sleeve 1-4-2 are provided with arc-shaped flanges II, and the arc-shaped flanges II include a jaw-type structure II. The jaw-type structure II includes a meshing surface AⅡ at the front and a yielding surface BⅡ at the rear. The central angle of the arc-shaped flange I (i.e., the central angle between the meshing surface AⅠ and the yielding surface BⅠ) is smaller than the central angle of the arc-shaped flange II (i.e., the central angle between the meshing surface AⅡ and the yielding surface BⅡ). The meshing surface AⅠ and the yielding surface BⅠ overlap and form a jaw-type locking engagement mechanism corresponding to the meshing surface AⅡ and the yielding surface BⅡ. The overlapping arm 1-1, in a cantilevered state, keeps the meshing surface AⅠ and the meshing surface AⅡ in a close contact state under its own gravity. Figure 3 As shown, at this time, the yielding surface BⅠ and the yielding surface BⅡ are separated and there is a free stroke angle with a center angle of C. The support shaft 1-7 is rolled and connected inside the drive bushing 1-4-2, and the two ends of the support shaft 1-7 pass through the overlapping arm body 1-1-2 and are installed on the rocking table frame 2 through the hinged shaft seat 1-3.

[0021] The drive assembly 3 includes a telescopic drive component. The base end of the telescopic drive component is hinged to the rocking table frame 2, and the telescopic end is hinged to the swing arm 1-4-1. The telescopic drive component is preferably a hydraulic cylinder structure.

[0022] When the intrinsically safe cradle connection device is installed on the cradle frame 2, if... Figure 1As shown, the retraction of the telescopic drive component of drive assembly 3 causes the swing arm 1-4-1 to drive the drive sleeve 1-4-2 to rotate counterclockwise around the central axis of the support shaft 1-7. Because the cantilevered overlapping arm 1-1, under its own weight, keeps the meshing surfaces AⅠ and AⅡ in contact, the overlapping arm 1-1 swings forward around the central axis of the support shaft 1-7 via the driven sleeve 1-1-1 following the rotation of the drive sleeve 1-4-2. This continues until the telescopic drive component is fully retracted, at which point the overlapping arm 1-1 swings into a horizontal overlapping state. When the lap claw 1-2 is engaged with the cage, after the mine car enters or exits the cage along the track, the telescopic drive component of the drive assembly 3 extends, causing the swing arm 1-4-1 to drive the drive sleeve 1-4-2 to rotate clockwise around the central axis of the support shaft 1-7. The lap arm 1-1 swings backward around the central axis of the support shaft 1-7 through the driven sleeve 1-1-1 following the rotation of the drive sleeve 1-4-2, until the telescopic drive component is fully extended. At this point, the lap arm 1-1 swings into a tilted, yielding state, at which point the lap claw 1-2 is away from the cage and does not affect the raising or lowering of the cage. When the control system malfunctions or the interlocking relationship is disordered, if the cage or other external forces impact the lap claw 1-2 from above while the lap arm 1-1 is in a horizontal lapped state, Figure 6 As shown, under the action of external force, safety pin 1-6 can be sheared and broken. At this time, overlapping claw 1-2 can be flipped downward along the central axis of overlapping claw pin 1-5 to avoid it, thus not affecting the downward movement of the cage and not causing damage to the mine shaft hoisting system. If the cage or other external forces hit overlapping claw 1-2 from bottom to top, the overlapping arm 1-1 can swing upward within the range of idle stroke angle C by driven bushing 1-1-1 to avoid it, thus not affecting the upward movement of the cage and not causing damage to the mine shaft hoisting system.

Claims

1. An intrinsically safe cradle table overlapping device, comprising an overlapping arm assembly (1) and a drive assembly (3); the overlapping arm assembly (1) comprises two overlapping arms (1-1) symmetrically arranged on the left and right sides and a drive sleeve (1-4) disposed between the two overlapping arms (1-1), the overlapping arms (1-1) being mounted on the cradle table frame (2) via hinged bearings (1-3); the drive assembly (3) being drively connected to the drive sleeve (1-4); characterized in that, The overlapping arm (1-1) includes an overlapping arm body (1-1-2) and a driven bushing (1-1-1) fixedly disposed on the rear inner side of the overlapping arm body (1-1-2). The overlapping claw (1-2) is hinged to the front end of the overlapping arm (1-1) via an overlapping claw pin (1-5) and extends forward. The overlapping claw (1-2) is positioned on the overlapping arm body (1-1-2) by a safety pin (1-6). The driven bushing (1-1-1) is axially positioned along the left-right direction. The drive sleeve (1-4) includes components that... The driving bushing (1-4-2) is coaxially arranged with the driving bushing (1-1-1). The inner end of the driven bushing (1-1-1) and the inner end of the driving bushing (1-4-2) are connected by a toothed engagement mechanism, and the toothed engagement mechanism has a free stroke angle. The driving bushing (1-4-2) is rolled and connected to the support shaft (1-7), and the two ends of the support shaft (1-7) pass through the overlapping arm body (1-1-2) and are installed on the rocking table frame (2) through the hinged shaft seat (1-3).

2. The intrinsically safe cradle table connection device according to claim 1, characterized in that, The driven bushing (1-1-1) has an arc-shaped flange I on its inner end, and the arc-shaped flange I includes a toothed clutch structure I. The driving bushing (1-4-2) has arc-shaped flanges II on both its left and right ends, and the arc-shaped flanges II include a toothed clutch structure II. The central angle of the arc-shaped flange I is smaller than the central angle of the arc-shaped flange II to form a free stroke angle, and the arc-shaped flange I and the arc-shaped flange II overlap to form a toothed clutch engagement mechanism.

3. The intrinsically safe cradle joint device according to claim 1 or 2, characterized in that, A rocker arm (1-4-1) is fixedly provided on the active bushing (1-4-2), and the rocker arm (1-4-1) extends out along the radial direction of the active bushing (1-4-2); the drive assembly (3) includes a telescopic drive component, the base end of the telescopic drive component is hingedly mounted on the rocking table frame (2), and the telescopic end of the telescopic drive component is hingedly connected to the rocker arm (1-4-1).

4. The intrinsically safe cradle table connection device according to claim 3, characterized in that, The telescopic drive component is a hydraulic cylinder structure.

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