Catenary embedded channel for tunnel

Abstract

The utility model discloses a catenary pre-buried channel for tunnel, including channel, abdicating hole, communication groove and guide groove, abdicating hole is integrated in the middle side of the top end inside channel, communication groove is integrated in the rear side of the middle end inside channel, guide groove is integrated in the rear end inside channel. Through the design of the limiting function, after the connecting plate and the screw rod are matched with the channel, the autorotation phenomenon cannot occur, that is, the nut cannot drive the screw rod and the connecting plate to rotate, and the working intensity and difficulty of workers are reduced. Through the design of a clamping and fixing function, a worker only needs to rotate a nut, so that the nut and a connecting ring apply extrusion force to the outer wall of a channel, then the state of a connecting plate and a screw rod after displacement in the channel is locked, in addition, through the design of mechanical linkage, when the connecting ring applies extrusion force to the channel, a limiting pin is inserted into an insertion hole, and the clamping and fixing function is achieved. And therefore, the fixing effect after the connecting plate and the screw rod displace is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-buried grooves, in particular to a pre-buried groove for a contact network used in a tunnel. Background Art

[0002] The overhead contact network is a high-voltage transmission line in an electrified railway that provides current for the pantograph. It is responsible for the important task of directly transmitting the electric energy obtained from the traction substation to the electric locomotive for use. Therefore, the quality and working condition of the overhead contact network will directly affect the transportation capacity of the electrified railway. The installation and positioning of the embedded grooves of the overhead contact network is one of the very important key processes in the tunnel construction process. The embedded grooves are difficult to repair after the tunnel lining is installed, and the maintenance cost is high. The installation effect of the embedded grooves directly affects the operation of the railway in the later period. At present, the grooves in railway tunnels are pre-made when the tunnel wall is formed, but there are no special products and standards for this type of products. Although the grooves are all arc-shaped, the installation positions and corresponding fixings are different. Therefore, many problems are encountered during installation. Many accessories can only be used once and cannot be used after replacing the new grooves, resulting in great waste.

[0003] The patent name is "CN210660213U", which is published as: A pre-buried channel for contact network in a tunnel. The public document solves the above problems, but the shortcomings in the public document are: the square card needs to pass through the rear matching slot and move into the channel. Because the space in the channel is larger than the rear matching slot, and the rear matching slot is larger than the square card, when the nut is threadedly connected to the screw, the nut will drive the screw and the square card to rotate synchronously during rotation. At this time, the staff needs to fix the screw with one hand and rotate the nut with the other hand to ensure that the nut moves along the direction of the channel when rotating. This operation method is time-consuming and labor-intensive, and increases the difficulty and intensity of the staff's work. Based on this, the utility model designs a pre-buried channel for contact network in tunnels to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a pre-buried channel for a contact network in a tunnel, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-buried channel for a contact network for a tunnel, comprising a channel, a clearance hole, a connecting channel and a guide channel, wherein the clearance hole is integrally arranged at the middle side of the top end inside the channel, the connecting channel is integrally arranged at the rear side of the middle end inside the channel, the guide channel is integrally arranged at the rear end inside the channel, the connecting channel and the guide channel are in a cross-design, and the interior of the connecting channel is in a connected state with the interior of the guide channel, a disassembly and assembly component is arranged inside the channel, the disassembly and assembly component comprises a connecting plate arranged inside the channel, a limit block is fixedly arranged at the rear end of the outer wall of the connecting plate, a screw is fixedly arranged at the front end outside the connecting plate, a nut is provided on the outer thread sleeve of the screw, and the cross-section of the limit block, the connecting channel and the guide channel is in a T-shaped design.

[0006] Furthermore, guide holes are integrally provided at the upper and lower ends of the screw rod, the guide holes are through-holes, and a sliding pin is slidably connected inside the guide holes.

[0007] Furthermore, a connecting ring is provided on the external fixing sleeve of the sliding pin, a push rod is fixed on the external rear end of the sliding pin, and the rear end surface of the push rod is designed as an inclined surface.

[0008] Furthermore, a first spring is fixedly disposed at the front end of the sliding pin, and one end of the first spring away from the sliding pin is fixedly connected to the screw rod.

[0009] Furthermore, a plurality of limiting holes are integrally provided at the bottom end of the inner part of the groove from left to right, and the limiting holes are blind hole designs.

[0010] Furthermore, a limit pin is slidably connected inside the connection plate, the top of the limit pin is designed as an inclined surface, and the top surface of the limit pin and the rear end surface of the push rod are in contact with each other.

[0011] Furthermore, a mounting block is fixedly provided on the top of the limiting pin, a second spring is fixedly provided on the top of the mounting block, and one end of the second spring away from the mounting block is fixedly connected to the connecting plate.

[0012] Furthermore, the mounting hole integrally provided at the front end of the connecting plate is designed as a through hole, and the interior of the mounting hole is connected with the interior of the connecting plate and the screw.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model adopts the design of the limiting function, so that the connecting plate, the screw and the groove will not rotate after being matched, thereby ensuring that when the nut and the screw are threadedly connected, the nut will not drive the screw and the connecting plate to rotate. It can be seen that by using the device in this application, the work intensity and difficulty of the staff are reduced.

[0015] 2. The utility model is designed with a clamping and fixing function, that is, the staff only needs to rotate the nut so that the nut together with the connecting ring exerts an extrusion force on the outer wall of the groove, thereby locking the connecting plate and the screw in the state after displacement inside the groove. In addition, through the design of mechanical linkage, when the connecting ring exerts an extrusion force on the groove, the limit pin is inserted into the socket, thereby improving the fixing effect of the connecting plate and the screw after displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a front perspective view of a tunnel catenary embedded channel according to the utility model;

[0018] Figure 2 A three-dimensional diagram of the internal structure of a tunnel catenary embedded channel according to the utility model;

[0019] Figure 3 A three-dimensional diagram of the sliding pin, the ejector rod and the connecting ring;

[0020] Figure 4 A three-dimensional diagram of the channel and the guide groove;

[0021] Figure 5 An exploded perspective view of the connecting plate and the limit pin;

[0022] Figure 6 It is a three-dimensional diagram of the screw and the guide hole.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1-groove, 2-allowance hole, 3-connecting groove, 4-guide groove, 5-disassembly and assembly component, 501-connecting plate, 502-limiting block, 503-screw, 504-nut, 6-guide hole, 7-sliding pin, 8-connecting ring, 9-thrust rod, 10-first spring, 11-limiting hole, 12-limiting pin, 13-mounting block, 14-second spring, 15-mounting hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0026] like Figure 1 , Figure 2 , Figure 4 As shown, the device includes a groove 1, a clearance hole 2, a connecting groove 3 and a guide groove 4. The clearance hole 2 is integrally arranged at the middle side of the top end of the groove 1, the connecting groove 3 is integrally arranged at the rear side of the middle end of the groove 1, and the guide groove 4 is integrally arranged at the rear end of the groove 1. The connecting groove 3 and the guide groove 4 are in a cross design, and the interior of the connecting groove 3 and the interior of the guide groove 4 are in a connected state. A disassembly component 5 is arranged inside the groove 1, and the disassembly component 5 includes a connecting plate 501 arranged inside the groove 1, a limit block 502 is fixedly arranged at the rear end of the outer wall of the connecting plate 501, a screw 503 is fixedly arranged at the front end of the outside of the connecting plate 501, a nut 504 is provided on the external thread sleeve of the screw 503, and the cross-section of the limit block 502, the connecting groove 3 and the guide groove 4 is T-shaped.

[0027] The staff first moves the connecting plate 501 and the screw 503 to the inside of the groove 1 through the clearance hole 2. At this time, the limit block 502 passes through the connecting groove 3 and moves to the inside of the guide groove 4. The staff then moves the screw 503 together with the connecting plate 501 along the direction of the groove 1. Synchronously, the connecting plate 501 drives the limit block 502 to move along the direction of the guide groove 4 until the state of the screw 503 after displacement meets the requirements of the staff, and then the nut 504 is threadedly connected to the screw 503. At this time, the guide groove 4 limits the rotation of the limit block 502, that is, the limit block 502 limits the self-rotation of the connecting plate 501 and the screw 503, thereby ensuring the stability of the nut 504 moving along the direction of the groove 1 when the nut 504 is threadedly connected to the screw 503. Example 2

[0028] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, guide holes 6 are integrally provided at the upper and lower ends of the screw 503, and the guide holes 6 are through-holes. A sliding pin 7 is slidably connected inside the guide hole 6, and a connecting ring 8 is fixedly sleeved outside the sliding pin 7. A push rod 9 is fixedly provided at the rear end of the sliding pin 7, and the rear end surface of the push rod 9 is an inclined surface design. A first spring 10 is fixedly provided at the front end of the sliding pin 7, and one end of the first spring 10 away from the sliding pin 7 is fixedly connected to the screw 503. A plurality of limiting holes 11 are integrally provided from left to right at the bottom end of the groove 1, and the limiting holes 11 are blind holes. A limit pin 12 is slidably connected inside the connecting plate 501. The top of the limit pin 12 is designed as a slope, and the top surface of the limit pin 12 fits with the rear end surface of the push rod 9. A mounting block 13 is fixedly provided on the top of the limit pin 12. A second spring 14 is fixedly provided on the top of the mounting block 13, and the end of the second spring 14 away from the mounting block 13 is fixedly connected to the connecting plate 501. The mounting hole 15 integrally arranged at the front end of the connecting plate 501 is designed as a through hole, and the interior of the mounting hole 15 is connected with the interior of the connecting plate 501 and the screw 503.

[0029] According to the operation method in Example 1, when the nut 504 is threadedly connected with the screw rod 503, the nut 504 squeezes the connecting ring 8 to move along the direction of the groove 1, so that the connecting ring 8 exerts an extrusion force on the groove 1, thereby locking the screw rod 503 and the connecting plate 501 in the state after displacement along the direction of the groove 1. At the same time, when the connecting ring 8 moves along the direction of the groove 1, the connecting ring 8 drives the sliding pin 7 to link the push rod 9 to exert an extrusion force on the limit pin 12, so that the limit pin 12 drives the mounting block 13 to move downward along the direction of the connecting plate 501, and the first spring 10 and the second spring 14 are deformed at the same time. At this time, the limit pin 12 is inserted into the current corresponding limit hole 11, thereby improving the fixing effect of the screw rod 503 and the connecting plate 501 after displacement.

Claims

1. A tunnel contact network embedded channel, comprising a channel (1), a clearance hole (2), a connecting groove (3) and a guide groove (4), characterized in that: The clearance hole (2) is integrally arranged at the middle side of the top end of the channel (1), the connecting groove (3) is integrally arranged at the rear side of the middle end of the channel (1), the guide groove (4) is integrally arranged at the rear end of the channel (1), the connecting groove (3) and the guide groove (4) are in a cross design, and the interior of the connecting groove (3) and the interior of the guide groove (4) are in a state of communication, a disassembly assembly (5) is arranged inside the channel (1), the disassembly assembly (5) comprises a connecting plate (501) arranged inside the channel (1), a limiting block (502) is fixedly arranged at the rear end of the outer wall of the connecting plate (501), a screw rod (503) is fixedly arranged at the front end of the outer wall of the connecting plate (501), a nut (504) is threadedly sleeved on the outer surface of the screw rod (503), and the cross-sections of the limiting block (502), the connecting groove (3) and the guide groove (4) are in a T-shaped design.

2. The tunnel contact network pre-buried channel according to claim 1, characterized in that: The screw rod (503) is provided with guide holes (6) at both upper and lower ends thereof. The guide holes (6) are through-holes. A sliding pin (7) is slidably connected to the guide holes (6).

3. The tunnel contact network pre-buried channel according to claim 2, characterized in that: The sliding pin (7) is provided with a connecting ring (8) on its outer fixed sleeve, and a push rod (9) is fixedly provided on the outer rear end of the sliding pin (7), wherein the rear end surface of the push rod (9) is designed as an inclined surface.

4. The tunnel contact network pre-buried channel according to claim 2, characterized in that: A first spring (10) is fixedly disposed at the front end of the sliding pin (7), and one end of the first spring (10) away from the sliding pin (7) is fixedly connected to the screw rod (503).

5. The tunnel contact network pre-buried channel according to claim 1, characterized in that: A plurality of limiting holes (11) are integrally provided at the bottom end of the interior of the groove (1) from left to right, and the limiting holes (11) are designed as blind holes.

6. The tunnel contact network pre-buried channel according to claim 1, characterized in that: The connection plate (501) is internally slidably connected to a limit pin (12), the top of the limit pin (12) is designed as an inclined surface, and the top surface of the limit pin (12) and the rear end surface of the push rod (9) are mutually fitted.

7. The tunnel catenary embedded channel according to claim 6, characterized in that: A mounting block (13) is fixedly provided on the top of the limiting pin (12), a second spring (14) is fixedly provided on the top of the mounting block (13), and an end of the second spring (14) away from the mounting block (13) is fixedly connected to the connecting plate (501).

8. The tunnel contact network pre-buried channel according to claim 1, characterized in that: The mounting hole (15) integrally provided at the front end of the connecting plate (501) is designed as a through hole, and the interior of the mounting hole (15) is in communication with the interior of the connecting plate (501) and the screw rod (503).

Images