Movable safety belt suspension device for rigid contact network

Abstract

The utility model discloses a movable safety belt suspension device for a rigid contact network, and mainly relates to the field of subway power supply systems. Comprising a main body frame with the top end open, guide wheel sets are arranged on the left inner wall and the right inner wall of the main body frame, each guide wheel set comprises a plurality of guide wheels which are sequentially arranged from front to back and matched with the rigid contact net, the guide wheels are rotationally connected with the main body frame, and the distance between the guide wheels and the rigid contact net is adjustable. A guide wheel set is arranged on the main body frame, a locking mechanism used for locking the positions of the guide wheels is arranged on the main body frame, a positioning wheel set is arranged on the lower side of the guide wheel set and comprises a plurality of positioning wheels which are sequentially arranged from front to back and matched with the rigid contact network, and the positioning wheels are located on the lower side of the rigid contact network and abut against the bottom face of the rigid contact network. A safety belt hanging rod is arranged at the bottom of the main body frame; the device can synchronously move along with the maintenance ladder truck, so that operators are prevented from falling from high positions and being hurt; the structure is light and can move synchronously with the maintenance operation.

Description

Technical Field

[0001] This utility model relates to the field of subway power supply systems, specifically a rigid contact wire mobile safety belt suspension device. Background Technology

[0002] Currently, the power supply for subways in urban rail transit systems mostly adopts rigid contact networks (with the contact wire clamped by a busbar of a "π" structure). The rigid contact network mainly consists of contact network suspension, support and positioning devices, insulation components, and overhead ground wires. A complete rigid contact network is divided into several anchor sections, each of which is generally no more than 250m in length, with a span of 6-12m. Due to the setting of the suspension span, there is a suspension positioning point every 6-12m.

[0003] Traditional rigid contact network maintenance relies on mobile maintenance ladder trucks. During maintenance, workers are required to suspend their safety belts from busbars, overhead ground wires, or contact network suspension points. However, operating from busbars and suspension points presents challenges due to inconvenience and the need for frequent switching of suspension points (for example, workers need to switch suspension points approximately 31 times during the maintenance of a 250m rigid contact network anchor section). Furthermore, overhead ground wires are typically laid only on one side of the line, making it inconvenient for one worker to suspend their safety belt. The high height and long distance of the overhead ground wires also increase the difficulty of suspending the safety belt. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art and provide a rigid contact network mobile safety belt suspension device. When performing contact network equipment maintenance and repair, the device can move synchronously with the maintenance ladder vehicle to ensure that the workers do not suffer from falls from heights; the structure is lightweight and can move synchronously with the maintenance work.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A rigid contact wire mobile safety belt suspension device includes a main frame with an open top, the width of which is greater than the width of the rigid contact wire. The rigid contact wire passes through the main frame. Guide wheel assemblies are provided on both the left and right inner walls of the main frame. Each guide wheel assembly includes several guide wheels arranged sequentially from front to back, adapted to the rigid contact wire. The guide wheels are rotatably connected to the main frame. The distance between the guide wheels and the rigid contact wire is adjustable. A locking mechanism for locking the position of the guide wheels is provided on the main frame. A positioning wheel assembly is provided on the lower side of the guide wheel assembly. The positioning wheel assembly includes several positioning wheels arranged sequentially from front to back, adapted to the rigid contact wire. The positioning wheels are located on the lower side of the rigid contact wire and abut against the bottom surface of the rigid contact wire. A safety belt suspension rod is provided at the bottom of the main frame.

[0007] Preferably, the main frame includes two vertical frames, and the seat belt suspension rod is located at the bottom between the two vertical frames, connecting the two vertical frames through the seat belt suspension rod, and the number of the seat belt suspension rod is at least two.

[0008] Preferably, the guide wheel assembly further includes a connecting frame disposed on the outside of the main frame. The guide wheel is provided with a guide wheel shaft. The main frame is provided with a horizontal through hole adapted to the guide wheel shaft. The end of the guide wheel shaft away from the guide wheel is connected to the connecting frame. The locking mechanism includes a locking pin. At least one guide wheel shaft in each guide wheel assembly is provided with a locking hole adapted to the locking pin. The top of the main frame is provided with an insertion hole adapted to the locking pin. The locking pin is inserted into the locking hole from top to bottom through the insertion hole to lock the position of the guide wheel shaft.

[0009] Preferably, each guide wheel group has two guide wheels, and each positioning wheel group has two positioning wheels.

[0010] Preferably, the positioning wheel is mounted on the main frame via adjusting screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model is compatible with different models of "π"-shaped busbars, forming a seat belt suspension device that can move smoothly along the busbar. During movement, there is no jamming or deviation, and it will not detach from the busbar under impact, ensuring a stable suspension platform while significantly improving personnel efficiency. In use, this utility model is installed on the busbar, and the seat belt is suspended from the seat belt suspension rod, moving synchronously. During maintenance, there is no need to frequently switch the seat belt suspension, providing a stable seat belt suspension platform while improving personnel efficiency and reducing costs.

[0013] 2. The guide wheel of this utility model adopts a quick-release mechanism with a pull-out design and is mounted on the busbar, which can quickly complete the disassembly and assembly. In addition, the positioning wheel is installed on the main frame through adjusting screws. The position of the positioning wheel can be adjusted left and right according to the model of the busbar, which can adapt to different models of busbars and achieve free sliding without jamming. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the guide wheel installation.

[0016] The following are the numbers in the attached diagram: 1. Main frame; 2. Guide wheel; 21. Guide wheel shaft; 3. Positioning wheel; 31. Adjusting screw; 4. Safety belt suspension rod; 5. Connecting frame; 6. Locking pin. Detailed Implementation

[0017] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0018] Example: As attached Figure 1-2 As shown, the present invention is a rigid contact wire mobile safety belt suspension device, mainly used for "π" type busbars. Specifically, it includes a main frame 1 with an open top. The main frame 1 has an overall U-shaped structure with an open top. The width of the open top of the main frame 1 is greater than the width of the rigid contact wire, and the rigid contact wire passes through the main frame 1.

[0019] Guide wheel assemblies are provided on both the left and right inner walls of the main frame 1. Each guide wheel assembly includes several guide wheels 2 arranged sequentially from front to back, which are adapted to the rigid contact wire. The guide wheels 2 are rotatably connected to the main frame 1. The distance between the guide wheels 2 and the rigid contact wire is adjustable. A locking mechanism for locking the position of the guide wheels 2 is provided on the main frame 1. In use, the main frame 1 is moved from top to bottom to the rigid contact wire, so that the rigid contact wire enters the main frame 1 through the top opening. Then, the position of the guide wheels 2 is adjusted so that the guide wheels 2 abut against the outer wall of the rigid contact wire, and the outer circumferential surface of the guide wheels 2 abuts against the lower wing plate of the outer wall of the rigid contact wire. Then, the position of the guide wheels 2 is locked by the locking mechanism, and the present invention can be installed on the rigid contact wire.

[0020] The guide wheel assembly is provided with a positioning wheel assembly on its lower side. The positioning wheel assembly includes a number of positioning wheels 3 arranged sequentially from front to back, which are adapted to the rigid contact wire. The positioning wheels 3 are located on the lower side of the rigid contact wire and abut against the bottom surface of the rigid contact wire. The bottom of the main frame 1 is provided with a safety belt suspension rod 4, which is used to suspend the safety belt.

[0021] Preferably, the main frame 1 includes two vertical frames, and the seat belt suspension rod 4 is located at the bottom between the two vertical frames. The two vertical frames are connected by the seat belt suspension rod 4. There are at least two seat belt suspension rods 4. External threads are machined at both ends of the seat belt suspension rod 4, and the outer diameter of the external thread is smaller than the outer diameter of the seat belt suspension rod 4. Corresponding mounting holes are provided on the vertical frames. After the end of the seat belt suspension rod 4 is inserted into the mounting hole, the vertical frame and the seat belt suspension rod 4 are connected as one unit by a nut.

[0022] Preferably, the guide wheel assembly further includes a connecting frame 5 disposed on the outside of the main frame 1. The guide wheel 2 is provided with a guide wheel shaft 21, and the guide wheel 2 and the guide wheel shaft 21 can be connected by screws. A thrust ball bearing is fitted on the screw. The main frame 1 is provided with a horizontal through hole adapted to the guide wheel shaft 21. The guide wheel shaft 21 can slide left and right in the through hole. A receiving groove adapted to the guide wheel 2 is provided at the end of the through hole away from the connecting frame 5. When installing this utility model, the guide wheel 2 can be pulled into the receiving groove. The end of the guide wheel shaft 21 away from the guide wheel 2 is connected to the connecting frame 5 by screws. The locking mechanism includes a locking pin 6. At least one guide wheel shaft 21 in each guide wheel assembly is provided with a locking pin 6 adapted to the locking pin 6. The main frame 1 has a locking hole at the top that is compatible with the locking pin 6. The locking pin 6 is inserted into the locking hole from top to bottom through the insertion hole to lock the position of the guide wheel shaft 21. The distance between the guide wheel 2 in the guide wheel assembly and the rigid contact wire can be adjusted by pushing and pulling the connecting bracket 5. When installing this utility model, first pull the connecting bracket 5 so that the guide wheel 2 is in the receiving groove. Then move the main frame 1 from top to bottom to the rigid contact wire so that the rigid contact wire enters the main frame 1 through the top opening of the main frame 1. Then push the connecting bracket 5 so that the guide wheel 2 abuts against the outer wall of the rigid contact wire. Insert the locking pin 6 into the locking hole from top to bottom through the insertion hole to lock the position of the guide wheel shaft 21, thus completing the installation of this utility model.

[0023] Preferably, each guide wheel group has two guide wheels 2, and each positioning wheel group has two positioning wheels 3.

[0024] Preferably, the positioning wheel 3 is mounted on the main frame 1 by adjusting screw 31. The adjusting screw 31 is provided with two nuts, which fix the adjusting screw 31 to the column frame 1. The end of the adjusting screw 31 is provided with a threaded hole and a screw. The positioning wheel 3 is provided with a center hole that is compatible with the screw. The positioning wheel 3 is mounted on the adjusting screw 31 by the screw. A thrust ball bearing is sleeved on the screw.

Claims

1. A rigid catenary mobile safety belt suspension device, characterized in that: The utility model provides a rigid contact net test device, which comprises a body frame (1) with a top opening, the width of the top opening of the body frame (1) is greater than the width of the rigid contact net, the rigid contact net passes through the body frame (1), a guide wheel set is arranged on the left and right inner walls of the body frame (1), the guide wheel set comprises a plurality of guide wheels (2) arranged in sequence from front to back and matched with the rigid contact net, the guide wheels (2) are rotationally connected with the body frame (1), the distance between the guide wheels (2) and the rigid contact net is adjustable, a locking mechanism for locking the position of the guide wheels (2) is arranged on the body frame (1), the lower side of the guide wheel set is provided with a positioning wheel set, the positioning wheel set comprises a plurality of positioning wheels (3) arranged in sequence from front to back and matched with the rigid contact net, the positioning wheels (3) are located on the lower side of the rigid contact net and abut against the bottom surface of the rigid contact net, and the bottom of the body frame (1) is provided with a safety belt suspension rod (4).

2. A rigid catenary mobile safety harness suspension device according to claim 1, characterised in that: The body frame (1) comprises two vertical frames, the safety belt suspension rod (4) is located at the bottom between the two vertical frames, the two vertical frames are connected through the safety belt suspension rod (4), and the number of the safety belt suspension rod (4) is at least two.

3. A rigid catenary mobile safety harness suspension device according to claim 1, wherein: The guide wheel set further comprises a connecting frame (5) arranged outside the body frame (1), the guide wheel (2) is provided with a guide wheel shaft (21), the body frame (1) is horizontally provided with a through hole matched with the guide wheel shaft (21), one end of the guide wheel shaft (21) away from the guide wheel (2) is connected with the connecting frame (5), the locking mechanism comprises a locking pin (6), at least one guide wheel shaft (21) in each guide wheel set is provided with a locking hole matched with the locking pin (6), the top of the body frame (1) is provided with a plug hole matched with the locking pin (6), the locking pin (6) is inserted into the locking hole from top to bottom through the plug hole, and the position of the guide wheel shaft (21) is locked.

4. A rigid catenary mobile safety harness suspension device according to claim 1, wherein: The number of the guide wheels (2) in each guide wheel set is two, and the number of the positioning wheels (3) in each positioning wheel set is two.

5. A rigid catenary mobile safety harness suspension device according to claim 1, wherein: The positioning wheel (3) is installed on the body frame (1) through an adjusting screw (31).

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