CN111391720B - Device for preventing weight from falling to ground and contact net - Google Patents
Device for preventing weight from falling to ground and contact net Download PDFInfo
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- CN111391720B CN111391720B CN202010198905.XA CN202010198905A CN111391720B CN 111391720 B CN111391720 B CN 111391720B CN 202010198905 A CN202010198905 A CN 202010198905A CN 111391720 B CN111391720 B CN 111391720B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/26—Compensation means for variation in length
Abstract
The invention relates to a device for preventing a balance weight from falling to the ground and a contact network. The pipe wall of the balance weight limiting pipe is provided with a first insertion hole, and the balance weight limiting pipe is used for being connected with the balance weight limiting frame. The limiting pipe connecting arm is inserted into the first jack, and a first connecting hole is further formed in the limiting pipe connecting arm and used for being connected with the compensation rope. One end of the spring movable plate is connected to the balance weight limiting pipe through the constant force spring, and the other end of the spring movable plate is provided with a second connecting hole which is used for being connected to the balance weight rod. The spring movable plate is connected to the limiting pipe connecting arm. The device for preventing the balance weight from falling to the ground is arranged on the contact net, when a wire breakage accident happens, the balance weight is effectively prevented from falling in a string manner, the safety of the person and the building is ensured, the balance weight does not need to be put into a string again by a worker, and the maintenance time is favorably shortened.
Description
Technical Field
The invention relates to the technical field of power supply of electrified railways, in particular to a device for preventing a weight from falling to the ground and a contact network.
Background
At present, when the conditions of rod breakage, bow scraping, tripping, thunderstorm and storm occur, the contact line or the catenary of the contact network of the electric railway can be broken, so that the compensation rope is loosened, the weight string arranged at the back end of the compensation rope loses balance, and the weight string falls to the ground and is scattered under the action of gravity. The falling weight is required to be stacked into a string again by a worker in the process of first-aid repair, the recovery difficulty is high, the required operation time is long, and the falling weight is an important factor for restraining accidents such as wire breakage and net collapse to be solved in time. Especially when the railway contact net anchor section joint is arranged on a bridge, once the contact net is broken, the weight falls down to the bridge, so that the safety of buildings and people under the bridge is endangered, and great potential safety hazards are realized.
Disclosure of Invention
Therefore, it is necessary to provide a device for preventing a weight from falling down and a contact network for solving the technical problems, so that when a disconnection accident occurs, the weight is effectively prevented from being strung down, the safety of a person and a building is ensured, and the maintenance time is shortened.
A device for preventing a weight from falling down comprises:
the balance weight limiting device comprises a balance weight limiting pipe, a balance weight limiting frame and a balance weight limiting frame, wherein a first jack is formed in the pipe wall of the balance weight limiting pipe;
the limiting pipe connecting arm is inserted into the first jack and is also provided with a first connecting hole for connecting a compensation rope; and
the balance weight limiting pipe comprises a constant force spring and a spring movable plate, one end of the spring movable plate is connected to the balance weight limiting pipe through the constant force spring, and the other end of the spring movable plate is provided with a second connecting hole which is used for being connected to a balance weight rod; the spring movable plate is connected to the limiting pipe connecting arm.
Above-mentioned prevent weight device of falling ground has following beneficial effect at least:
the device for preventing the balance weight from falling down comprises a balance weight limiting pipe, a limiting pipe connecting arm and a spring movable plate, when a catenary is broken, a compensation rope is loose, a constant force spring hung on the spring movable plate contracts, the limiting pipe connecting arm losing traction force generates a little displacement, but the limiting pipe connecting arm is still clamped in a first jack of the balance weight limiting pipe, meanwhile, the balance weight limiting pipe is fixedly connected to a balance weight limiting frame, namely, the balance weight limiting pipe and the limiting pipe connecting arm can generate a very small displacement, and the balance weight string can be almost kept in a static state and cannot fall down. In addition, the weight of the weight string is limited due to the arrangement of the constant-force spring, the phenomenon that the compensation rope is disconnected due to the fact that more weight strings are installed is avoided, and the safety of the contact net is guaranteed. The device for preventing the balance weight from falling to the ground is arranged on the contact net, when a wire breakage accident happens, the balance weight is effectively prevented from falling in a string manner, the safety of the person and the building is ensured, the balance weight does not need to be put into a string again by a worker, and the maintenance time is favorably shortened.
The technical solution is further explained below:
in one embodiment, the limiting pipe connecting arm comprises a first bending section and a second bending section connected to the first bending section, and the first bending section and the second bending section are arranged at an included angle.
In one embodiment, the end of the second bending section far away from the first bending section is inserted into the first insertion hole, and a movable gap of the second bending section is preset in the first insertion hole. Specifically, after the end of the second bending section is inserted into the first insertion hole of the weight limiting pipe, a certain movable gap is formed in the first insertion hole to ensure that the end of the second bending section is not locked in the first insertion hole, and the second bending section can also generate a small displacement. On one hand, when the connecting arm of the limiting pipe is damaged, the design is convenient for workers to replace the connecting arm of the limiting pipe. On the other hand, when the compensation rope is loosened, the compensation rope penetrating through the first connecting hole is loosened, the compensation rope has no traction force on the limiting pipe connecting arm any more, the limiting pipe connecting arm losing traction force is slightly displaced, but the limiting pipe connecting arm is still clamped in the first jack of the weight limiting pipe, the limiting pipe connecting arm and the weight limiting pipe basically keep the original positions unchanged, the spring movable plate is also kept in a fixed state on the limiting pipe connecting arm, and the weight string arranged below the spring movable plate is almost kept in a static state and cannot fall down.
In one embodiment, the device for preventing the weight from falling down further comprises a fastener, a first through hole is formed in the spring movable plate, and a second through hole is formed in the end part, close to the first bending section, of the second bending section; the fastener passes through first through-hole with the second through-hole in proper order, is used for connecting the spring fly leaf with the second bending segment.
In one embodiment, the part of the movable spring plate provided with the constant force spring is arranged above the second bending section, and the part of the movable spring plate provided with the second connecting hole is arranged below the second bending section; the first connecting hole is formed in the end portion, far away from the second bending section, of the first bending section.
In one embodiment, the device for preventing the balance weight from falling down further comprises a spring accessory, the spring accessory is arranged on the balance weight limiting pipe, and one end, far away from the movable spring plate, of the constant-force spring is connected to the spring accessory.
In one embodiment, a waist-shaped hole is formed in the spring movable plate, one end of the constant force spring penetrates through the waist-shaped hole, and the other end of the constant force spring penetrates through the end of the spring accessory.
In one embodiment, the contact network comprises a vertical rod, a weight limiting frame and the device for preventing the weight from falling down, wherein the vertical rod is fixed on a foundation surface, the weight limiting frame is fixed on the vertical rod, and a weight limiting pipe of the device for preventing the weight from falling down is connected to the weight limiting frame.
The contact net at least has the following beneficial effects:
the contact net provided by the embodiment is provided with the device for preventing the weight from falling down to the ground, the weight limiting pipe of the device for preventing the weight from falling down to the ground is fixed on the weight limiting frame on the vertical rod, the vertical rod is fixed on the foundation surface, and the foundation surface refers to the base surfaces such as the ground or the bridge floor. The pipe making connecting arm is clamped in the first inserting hole of the balance weight limiting pipe, and meanwhile, the balance weight limiting pipe is fixedly connected to the balance weight limiting frame, namely the balance weight limiting pipe and the limiting pipe connecting arm can generate very small displacement, so that the balance weight string can be kept in a static state almost and cannot fall. Therefore, the device for preventing the balance weight from falling to the ground is arranged on the contact net, when a wire breakage accident happens, the balance weight is effectively prevented from being stringed and falling, personal safety and building safety are guaranteed, and maintenance time is shortened.
The technical solution is further explained below:
in one embodiment, the contact network further comprises a compensation rope and a weight rod, the compensation rope comprises a back end, a limiting pipe connecting arm of the device for preventing the weight from falling to the ground is connected to the back end through a first connecting hole, a spring movable plate of the device for preventing the weight from falling to the ground is connected to the weight rod through a second connecting hole, and a weight string is arranged at the end of the weight rod, which deviates from the device for preventing the weight from falling to the ground.
In one embodiment, the catenary further comprises a catenary, and the compensating rope comprises an initial end arranged opposite to the return end, and the initial end is connected to the catenary. Specifically, when the catenary is broken, the compensation rope is loosened, the limiting pipe connecting arm losing traction force is slightly displaced, but the limiting pipe connecting arm is still clamped in the first inserting hole of the weight limiting pipe, and the weight limiting pipe is fixedly connected to the weight limiting frame, that is, the displacement generated by the weight limiting pipe and the limiting pipe connecting arm is very small, so that the weight string is almost kept in a static state and cannot fall down.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for preventing a weight from falling down to the ground according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a contact network provided in an embodiment of the present invention.
Description of reference numerals: 100. a device for preventing the balance weight from falling to the ground; 110. a weight limiting tube; 111. a first jack; 120. a limiting tube connecting arm; 121. a first bending section; 1211. a first connection hole; 122. a second bending section; 130. a constant force spring; 140. a spring movable plate; 141. a second connection hole; 142. a kidney-shaped hole; 150. a fastener; 160. a spring attachment; 200. a weight limiting frame; 300. erecting a rod; 400. a compensating rope; 410. returning to the head end; 420. an initial end; 500. a balance weight rod; 600. a weight string; 700. a catenary cable.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The embodiment provides a device 100 for preventing a weight from falling to the ground and a contact network, which have the advantages of effectively preventing a weight string 600 from falling when a wire break accident occurs, ensuring personal safety and building safety, and shortening maintenance time, and will be described in detail with reference to the accompanying drawings.
In one embodiment, referring to fig. 1 and 2, an apparatus 100 for preventing a weight from falling includes a weight limiting tube 110, a limiting tube connecting arm 120, a constant force spring 130, and a spring moving plate 140. The pipe wall of the weight limiting pipe 110 is provided with a first insertion hole 111, and the weight limiting pipe 110 is used for being connected to the weight limiting frame 200. The limiting tube connecting arm 120 is inserted into the first insertion hole 111, and a first connection hole 1211 is further formed in the limiting tube connecting arm 120 for connecting the compensation rope 400. One end of the spring movable plate 140 is connected to the weight limiting pipe 110 through the constant force spring 130, and the other end of the spring movable plate 140 is provided with a second connecting hole 141, and the second connecting hole 141 is used for being connected to the weight rod 500. The spring movable plate 140 is connected to the limiting tube connecting arm 120. The constant force spring 130 is a spring capable of maintaining a constant elastic force in a corresponding stroke, and is also called a constant force spring, and the movement mode of the constant force spring is linear movement. The constant force spring 130 has the advantages that the elastic force is more constant than that of a common compression or extension spring, the constant force spring 130 can output the elastic force close to a straight line, the product is ensured not to change due to the change of the elastic force in the using process, the space can be reduced as much as possible in a long and narrow space, and the possibility is improved for the attractive design of the product.
The device 100 for preventing the weight from falling down comprises a weight limiting pipe 110, a limiting pipe connecting arm 120 and a spring movable plate 140, when the messenger wire 700 is broken, the compensation rope 400 is loosened, the constant force spring 130 hung on the spring movable plate 140 is contracted, and the limiting pipe connecting arm 120 losing traction force is slightly displaced, but the limiting pipe connecting arm 120 is still clamped in the first insertion hole 111 of the weight limiting pipe 110, and meanwhile, the weight limiting pipe 110 is fixedly connected to the weight limiting frame 200, that is, the displacements generated by the weight limiting pipe 110 and the limiting pipe connecting arm 120 are very small, so that the weight string 600 is almost kept in a static state and cannot fall down. In addition, the weight of the weight string 600 is limited due to the arrangement of the constant-force spring 130, the phenomenon that the compensation rope 400 is disconnected due to the fact that more weight strings 600 are installed is avoided, and the safety of the contact net is guaranteed. The device 100 for preventing the balance weight from falling to the ground is arranged on the contact net, so that when a wire breakage accident happens, the balance weight string 600 is effectively prevented from falling, personal safety and building safety are guaranteed, and maintenance time is shortened.
In one embodiment, referring to fig. 1 and 2, the limiting tube connecting arm 120 includes a first bending section 121 and a second bending section 122 connected to the first bending section 121, and the first bending section 121 and the second bending section 122 are disposed at an included angle. Specifically, as shown in fig. 1, the limiting tube connecting arm 120 is an L-shaped tubular structure, and the first bending section 121 is located in the vertical direction to facilitate connection with the compensating rope 400. The second bending section 122 is located in the transverse direction and can be transversely inserted into the wall of the weight limiting pipe 110.
In one embodiment, referring to fig. 1 and fig. 2, an end of the second bending section 122 away from the first bending section 121 is inserted into the first insertion hole 111, and a moving gap of the second bending section 122 is preset in the first insertion hole 111. Specifically, after the end of the second bending section 122 is inserted into the first insertion hole 111 of the weight limiting tube 110, a certain clearance is provided in the first insertion hole 111 to ensure that the end of the second bending section 122 is not locked in the first insertion hole 111, and the second bending section 122 may also displace slightly. On the one hand, such a design facilitates the replacement of the restraining tube attachment arm 120 by a worker when it is damaged. On the other hand, when the messenger wire 700 is broken, the compensation rope 400 is loosened, the compensation rope 400 inserted in the first connection hole 1211 of the limiting tube connection arm 120 is loosened, the compensation rope 400 has no traction force on the limiting tube connection arm 120, the constant force spring 130 hung on the spring movable plate 140 contracts, the limiting tube connection arm 120 losing the traction force is slightly displaced, but the limiting tube connection arm 120 is still clamped in the first insertion hole 111 of the weight limiting tube 110, that is, the displacement generated by the limiting tube connection arm 120 is very small, so that the weight string 600 is almost kept in a static state and cannot fall down.
In one embodiment, referring to fig. 1 and 2, the device 100 for preventing the weight from falling down further includes a fastening member 150, the spring movable plate 140 is provided with a first through hole (not shown), and an end of the second bending section 122 close to the first bending section 121 is provided with a second through hole (not shown). The fastening member 150 sequentially passes through the first through hole and the second through hole to connect the spring movable plate 140 and the second bending section 122. Specifically, the fastening member 150 may be a bolt, a screw, or the like, and correspondingly, the first through hole and the second through hole are threaded holes. The first through hole is disposed at a position of the spring movable plate 140 close to the second connecting hole 141, and the fastener 150 sequentially passes through the first through hole and the second through hole, so that the spring movable plate 140 and the limiting pipe connecting arm 120 can be fixed together.
In one embodiment, referring to fig. 1 and 2, a portion of the movable spring plate 140 having the constant force spring 130 is disposed above the second bending section 122, and a portion of the movable spring plate 140 having the second connecting hole 141 is disposed below the second bending section 122. The first connection hole 1211 is disposed at an end of the first bending section 121 away from the second bending section 122. Further, the device 100 for preventing the weight from falling down further comprises a spring attachment 160, the spring attachment 160 is disposed on the weight limiting pipe 110, and one end of the constant force spring 130 away from the spring movable plate 140 is connected to the spring attachment 160. Specifically, the movable spring plate 140 is provided with a kidney-shaped hole 142, one end of the constant force spring 130 is inserted into the kidney-shaped hole 142, and the other end of the constant force spring 130 is inserted into the end of the spring attachment 160. The spring attachment 160 is a connecting rod, the spring movable plate 140 is connected to the weight limiting pipe 110 sequentially through the constant-force spring 130 and the spring attachment 160, and the second connecting hole 141 in the spring movable plate 140 is used for connecting the weight string 600. The weight of the weight cluster 600 is limited by the provision of the constant force spring 130. For example, if the weight of the weight exceeds the bearing capacity of the constant-force spring 130, the constant-force spring 130 will fail, and the weight limiting tube 110 will be damaged due to too large load, and the compensating rope 400 will be torn off. Therefore, the constant force spring 130 is arranged, a worker can install a proper number of balance weights according to the state and standard of the constant force spring 130, the phenomenon that the compensation rope 400 is disconnected due to the fact that a large number of balance weight strings 600 are installed is avoided, and the safety of the contact net is guaranteed.
In one embodiment, please refer to fig. 1 and 2, a contact net includes a vertical rod 300, a weight limiting frame 200, and a device 100 for preventing a weight from falling down as described in any of the above embodiments. The vertical rod 300 is fixed on the foundation surface, the weight limiting frame 200 is fixed on the vertical rod 300, and the weight limiting tube 110 of the device 100 for preventing the weight from falling to the ground is connected to the weight limiting frame 200. The foundation surface is a base surface of a road surface, a bridge surface and the like which can be used for building buildings and the like. The pole 300 may be a utility pole. The weight limiting pipe 110 is fixedly connected to the weight limiting frame 200, when the catenary 700 is broken, the compensating rope 400 is loosened, the limiting pipe connecting arm 120 losing traction force slightly displaces, but the limiting pipe connecting arm 120 is still clamped in the first insertion hole 111 of the weight limiting pipe 110, and meanwhile, the weight limiting pipe 110 is fixedly connected to the weight limiting frame 200, namely, the displacement generated by the weight limiting pipe 110 and the limiting pipe connecting arm 120 is very small, so that the weight string 600 almost keeps a static state and cannot fall down, and the safety of a person and a building is ensured. In addition, the staff does not need to put the balance weight into a string again, which is beneficial to shortening the maintenance time.
In one embodiment, please refer to fig. 1 and 2, the contact network further includes a compensation rope 400 and a weight rod 500, the compensation rope 400 includes a back end 410, the limiting pipe connecting arm 120 of the device 100 for preventing the weight from falling down is connected to the back end 410 through a first connecting hole 1211, the spring movable plate 140 of the device 100 for preventing the weight from falling down is connected to the weight rod 500 through a second connecting hole 141, and a weight string 600 is disposed at an end of the weight rod 500 away from the device 100 for preventing the weight from falling down. Further, the catenary also comprises a catenary 700, and the compensating rope 400 comprises an initial end 420 arranged opposite to the loop end 410, and the initial end 420 is connected to the catenary 700. Specifically, when the messenger wire 700 is broken, the compensation rope 400 is loosened, the constant force spring 130 hung on the spring movable plate 140 is contracted, the limiting pipe connecting arm 120 losing traction force is slightly displaced, but the limiting pipe connecting arm 120 is still clamped in the first insertion hole 111 of the weight limiting pipe 110, and the weight limiting pipe 110 is fixedly connected to the weight limiting frame 200, that is, the displacements generated by the weight limiting pipe 110 and the limiting pipe connecting arm 120 are very small, so that the weight string 600 is almost kept in a static state and cannot fall.
In one embodiment, a contact net includes the device 100 for preventing a weight from falling down as described in any one of the above embodiments. Since the contact net comprises the device 100 for preventing the weight from falling down, the technical effects are brought by the device 100 for preventing the weight from falling down, and the beneficial effects already include the beneficial effects of the device 100 for preventing the weight from falling down, so that the detailed description is omitted here.
In the device 100 for preventing the weight from falling down provided by the embodiment, when the messenger wire 700 is broken, the compensation rope 400 is loosened, the limiting pipe connecting arm 120 losing traction force is slightly displaced, but the limiting pipe connecting arm 120 is still clamped in the first insertion hole 111 of the weight limiting pipe 110, and the weight limiting pipe 110 is fixedly connected to the weight limiting frame 200, that is, the displacement which can be generated by the weight limiting pipe 110 and the limiting pipe connecting arm 120 is very small, so that the weight string 600 is almost kept in a static state and cannot fall down. The device 100 for preventing the balance weight from falling to the ground is arranged on the contact net, when a wire breakage accident happens, the balance weight string 600 is effectively prevented from falling, the safety of the human body and the building is guaranteed, a worker does not need to put the balance weight into a string again, and the maintenance time is favorably shortened. In the contact network provided by the embodiment, the device 100 for preventing the falling weight from falling to the ground is arranged, the falling weight limiting pipe 110 of the device 100 for preventing the falling weight from falling to the ground is fixed on the falling weight limiting frame 200 on the vertical rod 300, and the vertical rod 300 is fixed on the foundation surface. The tube-making connecting arm is clamped in the first insertion hole 111 of the weight limiting tube 110, and the weight limiting tube 110 is fixedly connected to the weight limiting frame 200, namely, the weight limiting tube 110 and the limiting tube connecting arm 120 have small displacement, so that the weight string 600 almost keeps a static state and cannot fall. Therefore, the device 100 for preventing the balance weight from falling to the ground is arranged on the contact net, when a wire breakage accident happens, the balance weight string 600 can be effectively prevented from falling, the safety of the human body and the building is ensured, in addition, workers do not need to put the balance weight into a string again, and the maintenance time is favorably shortened.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a prevent weight device of falling ground which characterized in that includes:
the balance weight limiting device comprises a balance weight limiting pipe, a balance weight limiting frame and a balance weight limiting frame, wherein a first jack is formed in the pipe wall of the balance weight limiting pipe;
the limiting pipe connecting arm is inserted into the first jack and is also provided with a first connecting hole for connecting a compensation rope; and
the balance weight limiting pipe comprises a constant force spring and a spring movable plate, one end of the spring movable plate is connected to the balance weight limiting pipe through the constant force spring, and the other end of the spring movable plate is provided with a second connecting hole which is used for being connected to a balance weight rod; the spring movable plate is connected to the limiting pipe connecting arm.
2. The device for preventing the weight from falling down according to claim 1, wherein the limiting pipe connecting arm comprises a first bending section and a second bending section connected to the first bending section, and the first bending section and the second bending section are arranged at an included angle.
3. The device for preventing the weight from falling down as claimed in claim 2, wherein an end of the second bending section far away from the first bending section is inserted into the first insertion hole, and a movable gap of the second bending section is preset in the first insertion hole.
4. The device for preventing the weight from falling to the ground as claimed in claim 2, wherein the device for preventing the weight from falling to the ground further comprises a fastener, the spring movable plate is provided with a first through hole, and the end part of the second bending section close to the first bending section is provided with a second through hole; the fastener passes through first through-hole with the second through-hole in proper order, is used for connecting the spring fly leaf with the second bending segment.
5. The device for preventing the weight from falling down as claimed in claim 2, wherein the part of the spring movable plate provided with the constant force spring is arranged above the second bending section, and the part of the spring movable plate provided with the second connecting hole is arranged below the second bending section; the first connecting hole is formed in the end portion, far away from the second bending section, of the first bending section.
6. The device for preventing the balance weight from falling to the ground as claimed in claim 1, further comprising a spring attachment, wherein the spring attachment is arranged on the balance weight limiting pipe, and one end of the constant force spring, which is far away from the movable spring plate, is connected to the spring attachment.
7. The device for preventing the weight from falling down to the ground as claimed in claim 6, wherein the spring movable plate is provided with a kidney-shaped hole, one end of the constant force spring is inserted into the kidney-shaped hole, and the other end of the constant force spring is inserted into the end of the spring accessory.
8. A contact net is characterized by comprising a vertical rod, a weight limiting frame and the device for preventing the weight from falling down as claimed in any one of claims 1 to 7, wherein the vertical rod is fixed on a foundation surface, the weight limiting frame is fixed on the vertical rod, and a weight limiting pipe of the device for preventing the weight from falling down is connected to the weight limiting frame.
9. The contact net of claim 8, further comprising a compensation rope and a weight rod, wherein the compensation rope comprises a back end, a limiting pipe connecting arm of the device for preventing the weight from falling to the ground is connected to the back end through a first connecting hole, a spring movable plate of the device for preventing the weight from falling to the ground is connected to the weight rod through a second connecting hole, and a weight string is arranged at an end of the weight rod away from the device for preventing the weight from falling to the ground.
10. The catenary of claim 9, further comprising a catenary cable, wherein the compensating rope comprises an initial end disposed opposite the return end, and wherein the initial end is connected to the catenary cable.
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| CN202010198905.XA CN111391720B (en) | 2020-03-20 | 2020-03-20 | Device for preventing weight from falling to ground and contact net |
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| CN202010198905.XA CN111391720B (en) | 2020-03-20 | 2020-03-20 | Device for preventing weight from falling to ground and contact net |
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| CN111391720B true CN111391720B (en) | 2021-07-06 |
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