Mechanical device for monorail service braking

Abstract

The utility model discloses a mechanical device for braking a single-rail travelling crane. The device is suitable for light and small hoisting mechanical equipment, such as a hand-pulled single-rail travelling crane and a hand-pushed single-rail travelling crane, depending on a track. The main structure is composed of a spring upper base plate, a telescopic column, a spring lower base plate, a conduction rod, a ratchet wheel, a chain wheel, a gear shaft, a frame and a pawl. The auxiliary accessories comprise a rubber block, a spring, a connecting pin, a bearing, a guide chain, a circlip for a shaft and a pawl spring; the braking device achieves the braking function of the monorail crane through a pure mechanical structure, has the advantages of being simple in structure, convenient to operate, high in reliability and the like, and is suitable for small and light hoisting mechanical equipment such as a hand-pulled monorail crane and a hand-pushed monorail crane.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery; specifically, it relates to a mechanical device for braking monorail vehicles, applicable to light and small lifting machinery and equipment such as hand-pulled monorail vehicles and hand-pushed monorail vehicles that rely on rails. Background Technology

[0002] Monorail trolleys are a common type of lifting machinery, usually used in conjunction with hand-operated hoists for operations such as machine installation, cargo lifting, and equipment maintenance, and are particularly suitable for lifting tasks in locations without power. However, in some special operating environments, such as lifting inside a ship's hold, the monorail trolley may be affected by the inertia of the cargo being lifted or by the swaying of the operating space, which may cause the monorail trolley to travel beyond the lifting range, posing a safety hazard.

[0003] In existing technologies, monorail vehicles typically do not have braking functions. If braking is required, an electric brake is usually installed, which can lead to problems such as complex structure, high cost, and difficult maintenance.

[0004] Based on the above requirements, this utility model proposes a mechanical device for braking monorail vehicles, aiming to overcome the shortcomings of the existing technology and provide a mechanical device with simple structure, convenient operation, and high reliability to achieve braking. Summary of the Invention

[0005] This utility model proposes a mechanical device for braking monorail vehicles; the purpose is to provide a mechanical device that can effectively brake monorail vehicles, prevent monorail vehicles from slipping, and ensure the safety of operators.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a mechanical device for braking a monorail vehicle. The main components of the braking mechanical device include an upper spring pad, a rubber block, a telescopic column, a lower spring pad, a guide rod, a ratchet, a sprocket, a connecting pin, a gear shaft, a frame, and a pawl; the auxiliary components are a spring, a pawl spring, a guide chain, and a bearing.

[0007] In this description of the utility model, in order to better express the positional relationship of the various parts in the utility model, it is necessary to understand that the orientation or position indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "central axis", "midpoint", "reverse ratchet tooth direction", "forward ratchet tooth direction", etc., is based on the positional relationship shown in the figure drawings.

[0008] The features are as follows: the left side of the frame is connected to a monorail trolley, wherein the monorail trolley is installed on an I-beam rail; the bearing and the pawl are installed on the inner side of the lower part of the frame; the central shaft of the bearing passes through the gear shaft; the center of the sprocket, the left end hole of the guide rod, and the center of the ratchet pass through the gear shaft in sequence; the guide chain is laid around the chain groove of the sprocket; the pawl is installed on the inner cylinder of the lower part of the frame and a pawl spring is installed thereon; the right end hole of the guide rod and the lower end hole of the lower spring pad are connected by the connecting pin; the lower spring pad and the upper spring pad are connected by the telescopic column; the spring is radially sleeved on the outer periphery of the telescopic column; a rubber block is pasted on the upper surface of the upper spring pad.

[0009] Furthermore, the frame is made of metal sheet and has a round hole for the shaft to pass through, and a cylinder for the pawl connection is provided on the lower inner side.

[0010] Furthermore, the frame (14) is fixed to the monorail vehicle (18) using bolts.

[0011] Furthermore, the guide rod has perforated strips at both ends and is made of stainless steel.

[0012] Furthermore, the upper surface of the pawl is subjected to the elastic force of the pawl spring and is adapted to fit and conform to the bottom ratchet teeth of the ratchet; in this state, the rotation of the ratchet is restricted and can only rotate in one direction along the ratchet teeth.

[0013] Furthermore, the relative positions of the sprocket, the guide rod, and the ratchet are fixed; the rotation of the sprocket can drive the guide rod and the ratchet to rotate simultaneously through the transmission of the gear shaft.

[0014] Furthermore, the end of the connecting pin is provided with an annular groove, and the shaft elastic retaining ring is installed at the position of the annular groove.

[0015] Furthermore, the telescopic column is cylindrical and made of stainless steel; it has limits on elongation and compression.

[0016] Furthermore, the top surface of the telescopic column is welded and fixed to the bottom surface of the upper spring pad; the bottom surface of the telescopic column is welded and fixed to the top surface of the lower spring pad.

[0017] Furthermore, the spring is not fixed to the top surface of the lower spring pad and the bottom surface of the upper spring pad; it can be compressed along the axial direction of the telescopic column.

[0018] Furthermore, the lower spring pad and the conductive rod can rotate about the connecting pin as an axis.

[0019] Working principle: Pulling one side of the guide chain causes the sprocket to rotate in the clockwise direction of the ratchet teeth. The sprocket, through the gear shaft, drives the ratchet and the guide rod to rotate simultaneously. Due to the action of the pawl spring, the pawl engages with the ratchet teeth at the bottom of the ratchet. The ratchet's rotation in the counter-clockwise direction is restricted, allowing it to rotate only in the clockwise direction. The rotation of the guide rod causes the lower spring pad to move upwards. The lower spring pad, through spring compression, moves the upper spring pad upwards. Simultaneously, the telescopic column is in a retracted state. This causes the friction between the rubber block on the top surface of the upper spring pad and the I-beam rail to gradually increase. The device is in a braking state; pull the pawl to disengage it from the ratchet teeth; the ratchet can rotate freely; pull one side of the guide chain to drive the sprocket to rotate in the opposite direction of the ratchet teeth, and the sprocket can drive the ratchet and the transmission rod to rotate simultaneously through the gear shaft; the rotation of the transmission rod causes the lower spring pad to move downward; causing the lower spring pad to move downward and causing the telescopic column to extend, while the spring tends to return to its natural state; when the telescopic column extends to its limit, it causes the upper spring pad to move downward; causing the rubber block on the top surface of the upper spring pad to disengage from the I-beam rail; the device is in a released braking state. Beneficial effects

[0020] 1. High adaptability: After the addition of braking device, the monorail can adapt to more operating environments, especially in operation scenarios under slope or inertial action.

[0021] 2. Simple structure: This utility model is a purely mechanical structure, requiring no electric drive, and is simple in structure, low in cost, and reliable in operation.

[0022] 3. Energy-saving and environmentally friendly: No external energy is required, making it energy-saving and environmentally friendly.

[0023] In summary, this utility model has the advantages of good reliability, low cost and energy saving; with the addition of a braking device, the monorail can be adapted to more operating environments. Attached Figure Description

[0024] Figure 1 This is a structural axis view of the present utility model.

[0025] Figure 2 This is the front view of the present utility model.

[0026] Explanation of reference numerals in the attached drawings: upper spring pad (1), rubber block (2), spring (3), telescopic column (4), lower spring pad (5), transmission rod (6), ratchet (7), sprocket (8), connecting pin (9), elastic retaining ring for shaft (10), bearing (11), gear shaft (12), guide chain (13), frame (14), pawl (15), pawl spring (16), I-beam rail (17), monorail (18). Detailed Implementation

[0027] Implementation Case 1: A monorail trolley needs to add a braking function, which requires modification to the original ordinary hand-operated rail trolley to add a braking device; the frame (14) and the monorail trolley (18) are fixed together with bolts; when braking is required, pull down the left side of the guide chain (13) to make the sprocket (8) rotate counterclockwise, which drives the transmission rod (6) and ratchet (7) to rotate counterclockwise through the gear shaft (12); the transmission rod (6) drives the lower spring pad (5) to move upward through the connecting pin (9); the telescopic column (4) retracts, the spring (3) is compressed and supports the upper spring pad (1) to move upward, and the rubber block (2) on the upper spring pad (1) moves upward. The pawl (15) is engaged with the I-beam rail (17) to complete the braking action; the pawl (15) is pulled to disengage from the ratchet (7), and the pawl spring (16) retracts; then the right side of the guide chain (13) is pulled down to make the sprocket (8) rotate clockwise, and the transmission rod (6) and ratchet (7) rotate clockwise through the gear shaft (12); the transmission rod (6) drives the lower spring pad (5) to move downward through the connecting pin (9); the spring (3) returns to its natural state, the telescopic column (4) extends until it reaches its limit, and drives the upper spring pad (1) to move downward. The rubber block (2) on the upper spring pad (1) falls off from the I-beam rail (17) to release the braking action.

Claims

1. A mechanical device for braking a monorail vehicle, characterized in that, The system includes a monorail (18), an I-beam rail (17), and a braking mechanism. The braking mechanism includes a frame (14). The frame (14) has a circular hole for axle penetration at the bottom and a cylinder on the inner side of the bottom. The frame (14) is bolted to the monorail (18). The monorail (18) is mounted on the I-beam rail (17). The frame (14) has a bearing (11) and a ratchet (15) installed at the bottom. A gear shaft (12) is installed through the central shaft of the bearing (11). A sprocket (8), a guide rod (6), and a ratchet (7) are installed sequentially near the midpoint of the gear shaft (12). A guide chain (13) is laid around the chain groove of the sprocket (8). The ratchet teeth at the bottom of the ratchet (7) are adapted to fit the upper surface of the pawl (15); the pawl (15) is mounted on the inner cylinder of the lower part of the frame (14) and a pawl spring (16) is installed thereon; the guide rod (6) and the lower spring pad (5) are connected by a connecting pin (9); an elastic retaining ring (10) for shaft is installed in the annular groove at the end of the connecting pin (9); the lower spring pad (5) and the upper spring pad (1) are connected by a telescopic column (4); the spring (3) is fitted radially around the telescopic column (4); the spring (3) is fitted to the top surface of the lower spring pad (5) and the bottom surface of the upper spring pad (1) respectively; a rubber block (2) is pasted on the upper surface of the upper spring pad (1).

2. The mechanical device for braking a monorail vehicle according to claim 1, characterized in that... The chain puller (13) drives the sprocket (8) to rotate. The sprocket (8) drives the ratchet (7) and the guide rod (6) to rotate through the gear shaft (12). The rotation of the guide rod (6) causes the lower spring pad (5) to move up and down. The top surface of the lower spring pad (5) and the bottom surface of the upper spring pad (1) are fixed to the upper and lower ends of the telescopic column (4). The rubber block (2) moves up and down with the upper spring pad (1). When the rubber block (2) is in contact with the I-beam rail (17), the braking mechanism is in a braking state. When the rubber block (2) is separated from the I-beam rail (17), the braking mechanism is in a released braking state.

3. The mechanical device for braking a monorail vehicle according to claim 1, characterized in that, When the lower spring pad (5) moves downward, it causes the telescopic column (4) to extend; when the telescopic column (4) extends to its limit, it causes the upper spring pad (1) to move downward.

4. A mechanical device for braking a monorail vehicle according to claim 1, characterized in that, When the braking device is in braking state, the pawl spring (16) acts on the pawl (15) to engage with the ratchet teeth at the bottom of the ratchet (7); the ratchet (7) is restricted from rotating in the opposite direction of the ratchet teeth and can only rotate in the forward direction of the ratchet teeth; as the sprocket (8) drives the ratchet (7) to rotate in the forward direction of the ratchet teeth, the lower spring pad (5) moves upward and drives the spring (3) to gradually compress, while the telescopic column (4) is in a contracted state; causing the friction between the rubber block (2) on the top surface of the upper spring pad (1) and the I-beam rail (17) to gradually increase; thereby achieving the braking effect.

5. A mechanical device for braking a monorail vehicle according to claim 1, characterized in that, Pulling the pawl (15) disengages it from the ratchet teeth of the ratchet (7), and the braking mechanism is released from braking; the ratchet (7) can rotate freely; as the sprocket (8) drives the ratchet (7) to rotate in the opposite direction of the ratchet teeth, the spring (3) returns to its natural state; causing the lower spring pad (5) to move downward and causing the telescopic column (4) to extend; when the telescopic column (4) extends to its limit, it causes the upper spring pad (1) to move downward; causing the rubber block (2) on the top surface of the upper spring pad (1) to disengage from the I-beam rail (17); thereby releasing the braking effect.

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