CN224091508U

CN224091508U - A multi-beam safety guardrail for bridge cranes

Info

Publication number: CN224091508U
Application number: CN202520631975.8U
Authority: CN
Inventors: 刘冬冬; 佟振廷
Original assignee: Henan Mining Crane Co ltd Fushun Branch
Current assignee: Henan Mining Crane Co ltd Fushun Branch
Priority date: 2025-04-07
Filing date: 2025-04-07
Publication date: 2026-04-07
Anticipated expiration: 2035-04-07

Abstract

This utility model discloses a multi-beam safety guardrail for bridge cranes, including a bridge frame. Guardrail top bars are provided on both sides of the upper part of the bridge frame, and multiple guardrail stops are fixed to the bottom end of each top bar. The guardrail stops are connected to the bridge frame via connecting components. This multi-beam safety guardrail for bridge cranes, through the cooperation between the bridge frame, guardrail top bars, guardrail stops, and connecting components, features a more rational height-driving structure design for the guardrail top bars. The meshing connection points required for transmission are protected by the bridge frame, bellows cover, and the central guardrail stops, preventing external factors from affecting stable operation. Furthermore, the height of the guardrail top bars can be adjusted using a single motor, reducing the overall structural cost. The front and rear sides of the bridge frame are simple and elegant, facilitating widespread use.

Description

Multi-beam safety barrier of bridge crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a multi-beam safety barrier of a bridge crane.

Background

The bridge crane is hoisting equipment for hoisting materials in workshops, warehouses and stock yards. Because its both ends are seated on the cement column or metal support of the high-large, the shape is like bridge, bridge frame of the bridge crane, move longitudinally along the orbit laid on overhead on both sides, can make full use of space below the bridge frame to hoist the supplies, is not hindered by ground apparatus, it is a kind of hoisting machinery with the widest range of application, the maximum quantity.

The utility model patent with the public number of CN211945967U is authorized in the disclosure technology, and discloses a bridge crane safety barrier, which relates to the technical field of cranes and comprises a barrier ejector rod and a bridge frame, wherein a gearbox is fixedly connected to one side surface of the bridge frame, the bottom of the barrier ejector rod is provided with a jack matched with a connecting plate, although the height of the barrier ejector rod can be reduced when the crane is not maintained, the barrier ejector rod can be lifted when the crane is required to be used, the purpose of utilizing a factory building to the maximum extent is achieved, the connecting plate can be inserted into the barrier ejector rod through the connecting plate, then the connecting plate is firmly connected with the barrier ejector rod through a connecting bolt, the barrier is formed by installing and splicing, the welding process is avoided, and the purpose of saving welding materials is achieved. But its structural design rationality that drives safety barrier to go up and down is comparatively general, because of the long-term exposing in the outside of the required meshing position of transmission, if the internal regulation of factory building is relatively poor, external factors such as dust particle, nonmetallic material and metal material piece adhere to its meshing transmission position, can seriously influence the smooth and easy performance when transmitting, be inconvenient for long-term in steady operation state. In addition, the lifting operation of the driving safety barrier is realized by using two driving motors, and the whole structure has high manufacturing cost and is not attractive and elegant enough, thereby being not beneficial to being popularized and used ‌.

Disclosure of utility model

The utility model aims to provide a multi-beam safety barrier of a bridge crane, which has more reasonable design on the height driving structure of the safety barrier, can not be influenced by external factors to reduce the stable running state, can reduce the manufacturing cost of the whole structure, and has simpler and more square bridge frame sides so as to solve the problems in the prior art.

The multi-beam safety barrier of the bridge crane comprises a bridge frame, wherein barrier ejector rods are arranged on two sides above the bridge frame, a plurality of barrier blocking rods are fixedly connected to the bottom ends of the barrier ejector rods, the barrier blocking rods are connected with the bridge frame through a connecting assembly, the connecting assembly comprises rack plates, the rack plates are vertically and fixedly connected with the inside of a central barrier blocking rod, the front sides of the rack plates are meshed with tooth columns, the inner walls of the tooth columns are fixedly connected with rotating rods, the rotating rods penetrate through the barrier blocking rods through vertical grooves, rubber sleeves are sleeved on two sides of the outer walls of the rotating rods, the rubber sleeves are abutted against the barrier blocking rods, organ covers are arranged on the outer sides of the vertical grooves and fixedly connected with the barrier blocking rods, sleeve plates are sleeved on the outer walls of the barrier blocking rods and fixedly connected with contact surfaces of the bridge frame, motors are fixedly connected to the inner top ends of the bridge frame, output shafts of the motors are fixedly connected with first bevel gears, the lower sides of the first bevel gears are meshed with second bevel gears, the inner walls of the second bevel gears are fixedly connected with the rotating rods, and the two sides of the rotating rods are fixedly connected with ball bearings.

Preferably, the tangent plane of guardrail pin is square structure, and the outer wall of guardrail pin and the inner wall clearance fit of cover board.

Preferably, an opening is formed in the lower surface of the bridge, a baffle is arranged below the opening, and the baffle is fixedly connected with the bridge through bolts.

Preferably, a guard board is arranged between the tooth column and the bridge frame, the guard board is rotationally connected with the rotating rod through a sealing bearing, and the guard board is fixedly connected with the bridge frame through bolts.

Compared with the prior art, the multi-beam safety guardrail of the bridge crane has the advantages that through the cooperation among a bridge frame, a guardrail ejector rod, a guardrail stop rod and a connecting assembly, the height of the guardrail ejector rod can be reduced when the crane is not maintained, the guardrail ejector rod is lifted when the crane is needed, the purpose of utilizing a factory building to the maximum extent is achieved, the design of a height driving structure of the guardrail ejector rod is more reasonable, meshing connection positions required by transmission can be protected by the bridge frame, an organ cover and the guardrail stop rod at the center, the meshing connection positions are not influenced by external factors to reduce the stable running state, the height adjustment of the guardrail ejector rod can be realized through the driving of a single motor, the manufacturing cost of the whole structure can be low, the front side and the rear side of the bridge frame are concise and large, and popularization and use are facilitated.

Drawings

The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side partial cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of FIG. 2 at A;

Fig. 4 is an enlarged view at B in fig. 2. In the figure, 1, a bridge, 2, a guardrail ejector rod, 3, a guardrail stop lever, 4, a rack plate, 5, a tooth column, 6, a rotating rod, 7, a vertical groove, 8, a rubber sleeve, 9, an organ cover, 10, a sleeve plate, 11, a motor, 12, a first bevel gear, 13, a second bevel gear, 14, a support plate, 15, a baffle plate, 16 and a protection plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to figures 1-4, the utility model provides a technical scheme that a multi-beam safety barrier of a bridge crane comprises a bridge 1, wherein barrier ejector rods 2 are arranged on two sides above the bridge 1, the bottom ends of the barrier ejector rods 2 are fixedly connected with a plurality of barrier stop rods 3, the barrier stop rods 3 are connected with the bridge 1 through a connecting assembly, the connecting assembly comprises a rack plate 4, the rack plate 4 is vertically fixedly connected with the inside of a central barrier stop rod 3, the front side of the rack plate 4 is meshed with a tooth column 5, the inner wall of the tooth column 5 is fixedly connected with a rotating rod 6, the rotating rod 6 penetrates through the barrier stop rod 3 through a vertical groove 7, rubber sleeves 8 are sleeved on two sides of the outer wall of the rotating rod 6, the rubber sleeves 8 are abutted against the barrier stop rod 3, an organ cover 9 is arranged on the outer side of the vertical groove 7, the organ cover 9 is fixedly connected with the barrier stop rod 3, the outer wall of the barrier stop rod 3 is sleeved with a sleeve plate 10, the inner top end of the bridge 1 is fixedly connected with a motor 11, an output shaft of the motor 11 is fixedly connected with a first bevel gear 12, the lower part of the first bevel gear 12 is meshed with a second bevel gear 13, the inner wall of the second bevel gear 13 is fixedly connected with the inner wall of the bridge 6, and the two sides of the rotating rod 6 are fixedly connected with ball bearings 14.

In the implementation process, it is worth particularly pointing out that the bridge 1 is a bridge framework in a bridge crane, the guardrail push rod 2 is arranged above the bridge 1 and symmetrically distributed, the guardrail push rod 2 can be fixedly connected with a plurality of guardrail stop rods 3 through fixing bolts, up-and-down adjustment of the guardrail push rod 2 and the guardrail stop rods 3 can be achieved through transmission of a connecting component, in addition, transmission engagement positions are not affected by external factors to reduce stable running states, the cost of the whole bridge structure can be reduced, two sides of the bridge are relatively concise and elegant, the rotating rod 6 can slide up and down in the vertical groove 7, the rubber sleeve 8 is made of rubber materials, certain flexibility is achieved, the inner wall of the rubber sleeve 8 abuts against the outer wall of the rotating rod 6, the rubber sleeve 8 is fixedly connected with the contact surface of the organ cover 9, the organ cover is an external protective structure of a sliding groove, the appearance is similar to that of an organ, the structure is formed by a plurality of folding structures, high-temperature-resistant synthetic fibers or plastic materials are used as folding structures, the supporting frameworks of the end parts of the organ cover 9 are fixedly connected with the guardrail stop rods 3, the rubber sleeve 8 and the cable is connected with the cable 7 can be provided with the electric power supply device 11, and the cable 11 can be fixedly connected with the cable 11 of the bridge, and the cable 11 can be provided with the outer side of the bridge is in contact with the outer side of the bridge, and the cable 11 can be fixedly connected with the cable 11.

Further, the tangent plane of guardrail pin 3 is square structure, and the outer wall of guardrail pin 3 and the inner wall clearance fit of bushing 10.

In the specific implementation process, it is worth particularly pointing out that the sleeve plate 10 can slide and limit the guard bar 3, so that the guard bar 3 can slide stably up and down.

Further, an opening is formed in the lower surface of the bridge 1, a baffle 15 is arranged below the opening, and the baffle 15 is fixedly connected with the bridge 1 through bolts.

In the specific implementation process, it is worth particularly pointing out that the baffle 15 can shield the opening, and the baffle 15 can be detached, so that maintenance and repair can be performed on the internal structure of the bridge 1 through the opening.

Further, a guard plate 16 is arranged between the tooth column 5 and the bridge frame 1, the guard plate 16 is rotatably connected with the rotating rod 6 through a sealing bearing, and the guard plate 16 is fixedly connected with the bridge frame 1 through bolts.

In the specific implementation process, it is worth particularly pointing out that the guard plate 16 can improve the stability of the rotating rod 6 and also can shield the gap between the rotating rod 6 and the bridge 1, so that external sundries can be prevented from entering the bridge 1.

Working principle:

when the crane is not maintained, the height of the guardrail push rod 2 can be reduced, the guardrail push rod 2 is lifted when the crane needs to be used, the purpose of utilizing a factory building to the maximum extent is achieved, in the process, the motor 11 needs to be powered to enable the output shaft of the motor 11 and the first bevel gear 12 to rotate anticlockwise, the first bevel gear 12 is meshed with the second bevel gear 13 to drive the second bevel gear 13, the rotating rod 6 and the tooth column 5 to rotate, the tooth column 5 can meshed with the tooth strip 4 to drive the tooth strip 4 after rotating, the guardrail push rod 3 and the sleeve plate 10 can be used for sliding and limiting the guardrail push rod 3, the guardrail push rod 3 and the guardrail push rod 2 can be moved downwards, when the guardrail push rod 3 and the guardrail push rod 2 need to be lifted, the output shaft of the motor 11 is driven to rotate clockwise, and the motor 11 is a motor with a self-locking function (the motor is a common motor with a self-locking function, a permanent magnet is usually adopted by a rotor of the stepping motor, the stepping motor is realized by reversing phase sequence, when the power is closed, the motor is kept at a position of the stepping motor with a self-locking function, the stepping motor 5326 can be kept at a certain position by a stepping motor, and a self-locking function can be realized, and a positive and negative pulse can be realized by a stepping motor. Specifically, if the input pulse sequence is performed according to the phase sequence of A-B-C-D, the stepper motor rotates forward according to the set direction, and if the phase sequence of the pulse sequence is changed to D-C-B-A, the stepper motor rotates reversely ‌. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multi-beam safety guardrail for a bridge crane, comprising a bridge frame (1), characterized in that: guardrail top rods (2) are provided on both sides above the bridge frame (1), and multiple guardrail stops (3) are fixedly connected to the bottom end of the guardrail top rods (2), the guardrail stops (3) are connected to the bridge frame (1) through a connecting assembly, the connecting assembly comprising: a rack plate (4), the rack plate (4) being vertically fixed inside the central guardrail stop (3), the front side of the rack plate (4) being engaged with a toothed column (5), a rotating rod (6) being fixedly connected to the inner wall of the toothed column (5), the rotating rod (6) penetrating the guardrail stop (3) through a vertical groove (7), and rubber sleeves (8) being fitted on both sides of the outer wall of the rotating rod (6), the rubber sleeves (8) being connected to the guardrail The stop bars (3) are pressed together. The outside of the vertical groove (7) is provided with a bellows cover (9). The bellows cover (9) is fixedly connected to the guardrail stop bar (3). The outer wall of the guardrail stop bar (3) is fitted with a sleeve plate (10). The sleeve plate (10) is fixedly connected to the contact surface of the cable tray (1). The top of the inside of the cable tray (1) is fixedly connected to a motor (11). The output shaft of the motor (11) is fixedly connected to a first bevel gear (12). The bottom of the first bevel gear (12) is meshed with a second bevel gear (13). The inner wall of the second bevel gear (13) is fixedly connected to the rotating rod (6). The two sides of the top of the inside of the cable tray (1) are fixedly connected to support plates (14). The support plates (14) are rotatably connected to the rotating rod (6) through ball bearings.

2. The multi-beam safety guardrail for a bridge crane according to claim 1, characterized in that: the cross-section of the guardrail bar (3) is a square structure, and the outer wall of the guardrail bar (3) is in clearance fit with the inner wall of the sleeve plate (10).

3. A multi-beam safety guardrail for a bridge crane according to claim 1, characterized in that: the lower surface of the bridge frame (1) is provided with an opening, and a baffle (15) is provided below the opening, the baffle (15) being fixedly connected to the bridge frame (1) by bolts.

4. A multi-beam safety guardrail for a bridge crane according to claim 1, characterized in that: a guard plate (16) is provided between the toothed column (5) and the bridge frame (1), the guard plate (16) is rotatably connected to the rotating rod (6) through a sealed bearing, and the guard plate (16) is fixedly connected to the bridge frame (1) by bolts.