A four-sided roof guardrail structure

Abstract

The utility model discloses a four -sided car roof guardrail structure, including three -sided guardrail and set up in the opening side of three -sided guardrail open -close guardrail, open -close guardrail includes fixed rail body, open -close subassembly, two groups of fixed rail body are opposite interval arrangement, open -close subassembly includes crossbeam, touch plate, stud, locking nut, limit switch, crossbeam is connected with first group fixed rail body rotation up and down, has the closing position of striding on two groups fixed rail body between and the opening position of far away second group fixed rail body, the stud sets up on second group fixed rail body, touch plate sets up on crossbeam, and the bayonet is equipped on touch plate, in the closing position, the bayonet is connected with the stud up and down and is matched, in the closing position, the touch plate and the trigger end contact cooperation of limit switch, locking nut is connected with the stud screw thread, the utility model discloses can form the protection around the car roof of car, effectively blocks car roof maintenance personnel from car roof doorway side direction accidental fall, carries out all -round protection to operating personnel, and the car roof is convenient for going in and out.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a four-sided car top guardrail structure. Background Technology

[0002] According to the GB / T 7588.1-2020 standard, a guardrail should be installed above the top of the elevator car to prevent the risk of falling. Currently, there are two types of conventional car top guardrails on the market: three-sided guardrails and two-sided guardrails. Three-sided guardrails are suitable for elevators with conventional single-door structures, while two-sided guardrails are suitable for elevators with conventional through-door structures. In other words, in both of these conventional car top guardrail structures, there is basically no guardrail protection above the door side of the car top. Therefore, the protection range of these two types of conventional car top guardrails is limited.

[0003] With the further development of the elevator industry, a new understanding of safety protection during elevator car top maintenance has emerged. Conventional car top guardrail structures cannot provide comprehensive protection for maintenance personnel moving around the car top. Specifically, when maintenance personnel are working on the car top above the door, there is a risk of falls from height and impacts from components. Furthermore, in actual project handling, it has been found that some regions mandate the installation of four-sided car top guardrails during the acceptance of newly installed elevators. Based on these factors, there is an urgent need to design a four-sided car top guardrail structure to form protection around the car top, effectively preventing accidental falls by maintenance personnel from the car top door side, thus providing comprehensive protection for workers. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to propose a four-sided car roof guardrail structure that can form a protective barrier around the car roof, effectively preventing maintenance personnel from accidentally falling from the side of the car roof door, providing all-round protection for the workers, and facilitating easy access to and from the car roof, making it highly practical.

[0005] The technical solution of this utility model is implemented as follows: a four-sided car roof guardrail structure, including three guardrails and an opening and closing guardrail disposed on the opening side of the three guardrails; the opening and closing guardrail includes a fixed guardrail body and an opening and closing component;

[0006] The two sets of fixed railings are arranged at intervals relative to each other and are fixedly connected to the three-sided guardrail;

[0007] The opening and closing assembly is located between two sets of fixed railings and includes a crossbeam, a contact plate, a stud, a locking nut, and a limit switch.

[0008] The crossbeam is rotatably connected to the first set of fixed railings, and has a closed position spanning between the two sets of fixed railings, and an open position away from the second set of fixed railings.

[0009] The stud is mounted on the second set of fixed railings;

[0010] The contact plate is mounted on the crossbeam and has a latch; in the closed position, the latch engages with the stud.

[0011] The limit switch is mounted on the second set of fixed rails; in the closed position, the contact plate is in contact with the trigger end of the limit switch.

[0012] The locking nut is threaded to the stud and is used to lock the touch plate onto the second set of fixed rails in the closed position.

[0013] Furthermore, at least two sets of the opening and closing components are arranged vertically at intervals.

[0014] Furthermore, an adjustment structure is provided between the touch plate and the crossbeam; the adjustment structure is used to adjust the position of the touch plate in the length direction and the width direction of the crossbeam.

[0015] Furthermore, the adjustment structure includes a bolt assembly; of the contact plate and the crossbeam, one has a first groove extending along the length direction of the crossbeam, and the other has a second groove extending along the width direction of the crossbeam; the bolt assembly is inserted into the first groove and the second groove.

[0016] Furthermore, the fixed railing includes several horizontal bars and several vertical bars that are connected to each other.

[0017] Furthermore, the first set of fixed railings is provided with a limiting structure; in the open position, the crossbeam abuts against the limiting structure.

[0018] Furthermore, the trigger end of the limit switch is arranged facing the first group of fixed railings.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] 1. In this utility model, three guardrails and openable guardrails together form a four-sided car roof guardrail structure. By rotating the crossbeam to the open position, workers can enter and exit the car roof. When the crossbeam is rotated to the closed position, it intercepts between two sets of fixed guardrails, thus providing protection. The combination of the above methods can form a protective barrier around the car roof, effectively preventing maintenance personnel from accidentally falling from the side of the car roof door, providing all-round protection for workers, and facilitating easy access to and from the car roof, making it highly practical.

[0021] 2. This utility model uses a contact plate in conjunction with the beam. The position of the contact plate in the length and width directions of the beam can be adjusted. By adjusting the position of the contact plate, the latch on the contact plate can be smoothly engaged with the stud, effectively meeting the assembly requirements of the overall structure and making it highly practical.

[0022] 3. This utility model, through the combined use of limit switches, allows the crossbeam to rotate to the open position when personnel need to enter or exit the car top. At this time, the limit switch is disengaged, outputting a signal to prevent elevator malfunction. After maintenance personnel enter or exit the car top, they rotate the crossbeam to the closed position, triggering the limit switch to control elevator operation. This method further improves the safety of personnel entering and exiting the car top. Attached Figure Description

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0026] Figure 3 for Figure 1 A three-dimensional structural diagram from another perspective;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the image;

[0028] Figure 5 This is a schematic diagram showing the state of the crossbeam of this utility model;

[0029] Figure 6 for Figure 5 A side view structural diagram;

[0030] Figure 7 This is a schematic diagram showing the connection between the touch plate and the crossbeam of this utility model;

[0031] The components include: 1. Three-sided guardrail; 2. Fixed guardrail body; 3. Crossbeam; 31. First groove; 4. Contact plate; 41. Bayonet; 42. Second groove; 5. Stud; 6. Locking nut; 7. Limit switch; 8. Bolt assembly; 9. Limiting structure. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0033] like Figure 1-7The diagram illustrates a four-sided car roof guardrail structure as described in this embodiment. This four-sided car roof guardrail structure is fixed to the car roof to provide interception and protection. The four-sided car roof guardrail structure includes three guardrails 1 and an opening / closing guardrail. The three guardrails 1 are fixed to the car roof and are formed by structural components. The three guardrails 1 enclose a working area, with the left, right, and rear sides providing interception and protection. An opening is formed between the two free ends of the front side of the three guardrails 1. The opening / closing guardrail is installed on the opening side of the three guardrails 1. A rectangular frame structure is formed between the three guardrails 1 and the opening / closing guardrail. The opening / closing guardrail includes fixed guardrail bodies 2 and opening / closing components. The fixed guardrail bodies 2 include several interconnected horizontal bars and several vertical bars. Two sets of fixed guardrail bodies 2 are arranged at intervals in the width direction of the opening side of the three guardrails 1 and are fixedly connected to the three guardrails 1. An access space is formed between the two sets of fixed guardrail bodies 2. Passengers can freely enter and exit the car roof through this access space. The aforementioned opening and closing components are fixedly installed between two sets of fixed railings 2 to enable the opening and closing of the space for entry and exit.

[0034] The aforementioned opening and closing assembly includes a crossbeam 3, a contact plate 4, a stud 5, a locking nut 6, and a limit switch 7. A rotating shaft is mounted on the first end of the crossbeam 3. This shaft passes through the first set of fixed railings 2 and rotates around its own central axis, allowing the crossbeam 3 to rotate vertically with the first set of fixed railings 2. When the crossbeam 3 rotates vertically, it has a closed position spanning between the two sets of fixed railings 2 and an open position away from the second set of fixed railings 2. The aforementioned stud 5 is fixedly installed on the second set of fixed railings 2 and extends in the front-to-back direction. The contact plate 4 is fixedly installed on the second end of the crossbeam 3. A latch 41 is machined on the lower edge of the contact plate 4. When the crossbeam 3 moves to the closed position, the latch 41 engages vertically with the stud 5, positioning the crossbeam 3 on the stud 5. The aforementioned locking nut 6 is a wing nut. The aforementioned locking nut 6 is threadedly connected to the stud 5. When in the aforementioned closed position, the contact plate 4 is clamped between the locking nut 6 and the fixed railing 2 by tightening the locking nut 6, thereby locking the contact plate 4 onto the second set of fixed railings 2.

[0035] The aforementioned limit switch 7 is fixed to a preset position on the second set of fixed railings 2 via a mounting plate. This limit switch 7 is a conventional component of the prior art, having a telescopic trigger end. When the crossbeam 3 is in the aforementioned closed position, the contact plate 4 engages with the trigger end of the limit switch 7, triggering the limit switch 7 and outputting a signal. When the contact plate 4 moves away from the limit switch 7, the trigger end of the limit switch 7 automatically resets. In this embodiment, the trigger end of the limit switch 7 faces the first set of fixed railings 2. During the up-and-down rotation of the crossbeam 3, the contact plate 4 can contact the trigger end of the limit switch 7 and compress the trigger end to retract, thereby triggering the limit switch 7. This limit switch 7 is connected to the elevator's central control system to output signals to the central control system.

[0036] In this embodiment, according to the actual structural design, at least two sets of opening and closing components are arranged vertically at intervals to improve the protective capability. Specifically, a limiting structure 9 is fixed to the first set of fixed railings 2. When the crossbeam 3 is in the aforementioned open position, the crossbeam 3 abuts against the limiting structure 9, thereby restricting the rotation of the crossbeam 3.

[0037] An adjustment structure is arranged between the aforementioned contact plate 4 and the crossbeam 3. This adjustment structure is used to adjust the position of the contact plate 4 in the length direction and the width direction of the crossbeam 3. Specifically, the adjustment structure includes a bolt assembly 8. One of the contact plate 4 and the crossbeam 3 has a first groove 31 extending along the length direction of the crossbeam 3, and the other has a second groove 42 extending along the width direction of the crossbeam 3. The aforementioned bolt assembly 8 is inserted into the first groove 31 and the second groove 42. The bolt assembly 8 includes a bolt and a mating nut. When the bolt assembly 8 is in the locked state, the contact plate 4 and the crossbeam 3 are locked and fixed relative to each other. By adjusting the position of the bolt assembly 8 in the first groove 31 and the second groove 42, the position of the contact plate 4 relative to the crossbeam 3 can be adjusted. Through the above structural design, the position of the contact plate 4 in the length direction and the width direction of the crossbeam 3 can be adjusted. By adjusting the position of the contact plate 4, the latch 41 on the contact plate 4 can be smoothly engaged with the stud 5, effectively meeting the assembly requirements of the overall structure.

[0038] In practical use, during normal elevator operation, the contact plate 4 is engaged with the stud 5 via the latch 41 and locked by the locking nut 6. At this time, the limit switch 7 is triggered by the contact plate 4. When the elevator is under maintenance, the operator opens the landing door, manually loosens the locking nut 6, and lifts each crossbeam 3 to enter the car top. After entering the car top, the crossbeams 3 are lowered and locked by the locking nut 6. After the maintenance work is completed, the crossbeams 3 are raised and lowered again following the above steps, and the operator returns to the landing from the car top. In the above method, the three-sided guardrail 1 and the opening and closing guardrails form a four-sided car top guardrail structure. By rotating the crossbeam 3 to the open position, the operator can enter and exit the car top. When the crossbeam 3 is rotated to the closed position, the crossbeam 3 is intercepted between the two sets of fixed guardrails 2 to provide protection. The combination of the above methods can form a protection around the car top, effectively preventing maintenance personnel from accidentally falling from the side of the car top door, providing all-round protection for the operator, and facilitating entry and exit from the car top. When any of the crossbeams 3 is opened, the corresponding limit switch 7 is disconnected, sending a signal to the central control system to prevent the elevator from operating normally or undergoing maintenance, thus preventing malfunctions. Only when all crossbeams 3 are in the closed position can the elevator operate normally or undergo maintenance, further improving the safety of personnel entering and exiting the car top, making it highly practical.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A four-sided car roof guardrail structure, comprising three guardrails and openable / closable guardrails disposed on the opening sides of the three guardrails; characterized in that: The opening and closing guardrail includes a fixed guardrail body and an opening and closing assembly; The two sets of fixed railings are arranged at intervals relative to each other and are fixedly connected to the three-sided guardrail; The opening and closing assembly is located between two sets of fixed railings and includes a crossbeam, a contact plate, a stud, a locking nut, and a limit switch. The crossbeam is rotatably connected to the first set of fixed railings, and has a closed position spanning between the two sets of fixed railings, and an open position away from the second set of fixed railings. The stud is mounted on the second set of fixed railings; The contact plate is mounted on the crossbeam and has a latch; in the closed position, the latch engages with the stud. The limit switch is mounted on the second set of fixed rails; in the closed position, the contact plate is in contact with the trigger end of the limit switch. The locking nut is threaded to the stud and is used to lock the touch plate onto the second set of fixed rails in the closed position.

2. The four-sided car roof guardrail structure according to claim 1, characterized in that: At least two sets of the opening and closing components are arranged vertically at intervals.

3. The four-sided car roof guardrail structure according to claim 1, characterized in that: An adjustment structure is provided between the touch plate and the crossbeam; the adjustment structure is used to adjust the position of the touch plate in the length direction and the width direction of the crossbeam.

4. The four-sided car roof guardrail structure according to claim 3, characterized in that: The adjustment structure includes a bolt assembly; of the contact plate and the crossbeam, one has a first groove extending along the length direction of the crossbeam, and the other has a second groove extending along the width direction of the crossbeam; the bolt assembly is inserted into the first groove and the second groove.

5. A four-sided car roof guardrail structure according to claim 1, characterized in that: The fixed railing consists of several horizontal bars and several vertical bars that are connected to each other.

6. The four-sided car roof guardrail structure according to claim 1, characterized in that: The first set of fixed railings is provided with a limiting structure; in the open position, the crossbeam abuts against the limiting structure.

7. A four-sided car roof guardrail structure according to claim 1, characterized in that: The trigger end of the limit switch is arranged facing the first group of fixed railings.

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