Installation device for ballastless track expansion joint rubber strip

Abstract

The present invention belongs to the field of rails, and specifically relates to a device for installing rubber strips for expansion joints of ballastless tracks. It includes a connecting mechanism, the connecting mechanism includes a claw, a conical transmission component and a mounting seat, the claw can be telescopically mounted on the mounting seat, the conical transmission component is arranged inside the mounting seat, the claw is provided with a transmission part, the transmission part is provided with a ball bearing in contact with the conical transmission component, and the conical transmission component rotates to extend or retract the claw; and a traction mechanism, the traction mechanism includes a traction rope and a storage cylinder, the storage cylinder is connected to the traction rope, the storage cylinder is used to drive the traction rope to move, and the traction rope is connected to the connecting mechanism. The present invention provides a device for installing rubber strips for expansion joints of ballastless tracks, the purpose of which is to solve the problem of the prior art that the installation device and the rubber strip are detached when the rubber strip is installed.

Description

Technical Field

[0001] The invention belongs to the field of tracks, and in particular relates to an installation device for a rubber strip of a ballastless track expansion joint. Background Art

[0002] Ballastless tracks are widely used in existing technologies. Expansion joints are installed between the ballastless tracks to reduce damage caused by thermal expansion and contraction. These expansion joints are filled with rubber strips. To facilitate the installation of these strips, connecting grooves are typically provided at the ends of adjacent ballastless tracks. These grooves connect to the sides of the rubber strips, securing them in place.

[0003] In the prior art, to install the side of the rubber strip into the connecting groove, it is necessary to manually clamp the side edge of the rubber strip into the connecting groove, and then use an installation device to embed the entire rubber strip into the expansion joint. For information on the installation device for expansion joints in the prior art, please refer to the prior art application number 202120402231.0, entitled "Present Art Installation Device for Rubber Strips for Expansion Joints."

[0004] However, in the prior art, when a mounting device is used to embed the rubber strip into the expansion joint, the connection between the mounting device and the rubber strip is not stable enough, and the mounting device and the rubber strip are easily separated, thereby causing the rubber strip installation to fail. Summary of the Invention

[0005] The present invention provides a device for installing a rubber strip of a ballastless track expansion joint, which aims to solve the problem in the prior art that the installation device and the rubber strip are separated when the rubber strip is installed.

[0006] In order to achieve the above-mentioned object, the present invention provides an installation device for a rubber strip of a ballastless track expansion joint, comprising a connecting mechanism, wherein the connecting mechanism comprises a supporting claw, a conical transmission component and a mounting seat, wherein the supporting claw is retractably mounted on the mounting seat, the conical transmission component is arranged inside the mounting seat, the supporting claw is provided with a transmission portion that is in transmission contact with the conical transmission component, and the conical transmission component rotates to extend or retract the supporting claw; a transmission structure, wherein the transmission structure comprises a threaded barrel, an operating rod and a locking ring, wherein the threaded barrel is mounted on the mounting seat by a thread, and the operating rod and the locking ring are provided. The threaded cylinder is fixedly connected to the conical transmission component, a transmission groove is provided on the inner wall of the threaded cylinder, the locking ring is provided at the rear end of the threaded cylinder, and a plurality of locking grooves distributed in an annular shape are provided on the inner ring of the locking ring. When the operating rod moves forward, the limiting protrusion is embedded in the transmission groove, and when the operating rod moves backward, the limiting protrusion is engaged with the transmission groove and the locking groove; and a traction mechanism, the traction mechanism includes a traction rope and a storage cylinder, the storage cylinder is connected to the traction rope, the storage cylinder is used to drive the traction rope to move, and the traction rope is connected to the connecting mechanism.

[0007] To install the rubber strip, the connecting mechanism is inserted into the central hole in the strip. The claws of the connecting mechanism expand outward and contact the inner wall of the central hole in the strip, thus connecting the connecting mechanism to the strip. The traction mechanism then moves the strip, allowing it to be installed into the expansion joint. This connection method provides a more stable connection between the strip and the connecting mechanism, preventing it from falling off during installation and improving installation efficiency.

[0008] Preferably, in order to realize automatic locking of the operating rod, the transmission structure described in this scheme also includes a locking spring and a bearing. A limiting protrusion is provided on the surface of the operating rod, and the width of the limiting protrusion is smaller than the width of the transmission groove. The bearing sleeve is installed on the operating rod, and the locking spring is provided at the front end of the operating rod. One end of the locking spring is connected to the outer ring of the bearing, and the other end of the locking spring is connected to the conical transmission component.

[0009] Preferably, in order to make the locking spring more stable and prevent the locking spring from deflecting to the side during deformation, the transmission structure of this solution further includes a fixing cylinder, in which the locking spring is accommodated.

[0010] Preferably, in order to realize the automatic return of the supporting claw, the connecting mechanism described in this scheme also includes a return structure, and the return structure includes a return spring and a matching part. The matching part is arranged on the supporting claw, one end of the return spring matches with the matching part, and the other end of the return spring matches with the mounting seat.

[0011] Preferably, in order to facilitate the installation of the return spring and prevent the return spring from interfering with the telescopic movement of the supporting claw, the mounting seat of this solution is configured with a return cavity, and the return spring is located inside the return cavity.

[0012] Preferably, in order to make the connection between the connecting mechanism and the rubber strip more stable, at least three supporting claws are provided in this solution and are installed in a ring shape on the mounting seat.

[0013] Preferably, the claws are T-shaped or L-shaped.

[0014] Preferably, in order to increase the connection stability between the supporting claw and the rubber strip, the supporting claw of this solution is provided with an anti-slip protrusion, and the anti-slip protrusion is corrugated.

[0015] Preferably, in order to reduce the friction between the claw transmission part and the conical transmission component and avoid damage to the claw transmission part or the conical transmission component, a ball is provided at the end of the transmission part of this solution, and the ball is in rolling contact with the conical transmission component.

[0016] Preferably, in order to reduce the wear of the traction rope, the traction mechanism described in this solution also includes a frame and a steering wheel, the storage cylinder is installed on the frame, the steering wheel is installed at the lower end of the frame, and the steering wheel is located below the storage cylinder, and the traction rope is connected to the connecting mechanism by being turned by the steering wheel.

[0017] The present invention provides the following beneficial effects: When the rubber strip needs to be installed, the connecting mechanism is inserted into the central hole in the rubber strip. The claws of the connecting mechanism expand outward and contact the inner wall of the central hole in the rubber strip, thereby connecting the connecting mechanism to the rubber strip. The traction mechanism then drives the rubber strip to move, allowing the strip to be installed into the expansion joint. This connection method provides a more stable connection between the rubber strip and the connecting mechanism, ensuring that the rubber strip will not fall off during installation, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the connecting mechanism in Example 1.

[0019] Figure 2 This is a schematic diagram of Example 1 when the conical transmission component is not assembled into the mounting seat.

[0020] Figure 3 This is a schematic diagram of the claws in Example 1 in an unfolded state.

[0021] Figure 4 Schematic diagram of the claws in Example 1 in an expanded state.

[0022] Figure 5 This is a schematic diagram of Example 1 when the claws are in an expanded state and the conical transmission component is locked.

[0023] Figure 6 Schematic diagram of the locking ring in Example 1.

[0024] Figure 7 Schematic diagram of the traction mechanism in Example 1.

[0025] Figure 8 Schematic diagram of the locking spring in Example 2 in a compressed state.

[0026] Figure 9 Schematic diagram of the locking spring in the released state in Example 2.

[0027] Figure 10 This is a schematic diagram of configuring the sealing cover in Example 3.

[0028] Figure 11 This is a schematic diagram when the rubber strip is not installed into the expansion joint.

[0029] Figure 12This is a schematic diagram of the rubber strip being installed into the expansion joint.

[0030] The accompanying drawings include: connecting member mechanism 1, claw 11, connecting part 111, ball 111a, transmission part 112, conical transmission component 12, mounting seat 13, transmission chamber 131, return spring 14, transmission structure 15, threaded cylinder 151, transmission groove 151a, operating rod 152, limiting protrusion 152a, locking ring 153, locking groove 153a, locking spring 154, fixing cylinder 155, bearing 156, closed groove 156a, closed cover 157, closed protrusion 157a, traction mechanism 2, frame 21, storage cylinder 22, steering wheel 23, traction rope 24, rubber strip 3, middle hole 31, connector 32, connecting chamber 4, first cavity 41, second cavity 42. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, identical numerals in different drawings represent identical or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0032] In this disclosure, unless otherwise specified, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" are used in this disclosure to distinguish one element from another and do not convey order or importance.

[0033] Example 1

[0034] Basically as attached Figures 1 to 7 As shown, a device for installing a rubber strip for a ballastless track expansion joint includes a connecting mechanism 1 and a traction mechanism 2. The connecting mechanism 1 is used to connect with the middle hole 31 in the middle of the rubber strip 3, and the traction mechanism 2 is used to drive the rubber strip 3 to be installed into the expansion joint after the connecting mechanism 1 is connected to the rubber strip 3.

[0035] The connecting mechanism 1 of this embodiment specifically includes a supporting claw 11 , a conical transmission component 12 and a mounting seat 13 .

[0036] In this embodiment, the number of the claws 11 is more than 3, and can be specifically set to 4, 5 or 6, etc. In the attached figure, the number of the claws 11 is 4. The claws 11 are arranged in a ring and mounted on the mounting seat 13. The claws 11 are T-shaped or L-shaped as a whole. The claws 11 include a connecting portion 111 and a transmission portion 112. The connecting portion 111 and the transmission portion 112 are distributed in a T-shape or an L-shape. The connecting portion 111 is used to contact the inner wall of the middle hole 31 of the rubber strip 3, while the transmission portion 112 is connected to the mounting seat 13. The transmission portion 112 is specifically in the shape of a round rod, while the connecting portion 111 is in the shape of an arc-shaped sheet. In order to prevent the connecting portion 111 from sliding with the inner wall of the middle hole 31 of the rubber strip 3, the outer surface of the connecting portion 111 is provided with anti-slip protrusions. There are multiple anti-slip protrusions, and they are arranged in an array in a straight line. At the same time, the anti-slip protrusions are wavy. The anti-skid protrusions increase friction, further preventing the claws 11 from separating from the rubber strip 3. The wavy anti-skid protrusions can increase friction in two directions, thereby achieving a better anti-skid effect.

[0037] The mounting seat 13 of this embodiment is cylindrical as a whole. In order to facilitate the front end of the mounting seat 13 to enter the middle hole 31 in the middle of the rubber strip 3, it is preferred that the front end of the mounting seat 13 is set to a conical shape. A transmission cavity 131 is provided inside the mounting seat 13 of this embodiment. The transmission cavity 131 is preferably a cylindrical cavity, and the rear end of the transmission cavity 131 is connected to the outside. The side wall of the mounting seat 13 is provided with a mounting channel that is connected to the transmission cavity 131 located inside the mounting seat 13. The transmission part 112 of the claw 11 is installed inside the mounting channel, and the end of the transmission part 112 of the claw 11 extends into the transmission cavity 131. When the claw 11 is accommodated inside the mounting channel, the transmission part 112 of the claw 11 can perform telescopic movement in the mounting channel.

[0038] Taking one application scenario as an example: when the connection mechanism 1 needs to be stably connected to the center hole 31 in the middle of the rubber strip 3, the transmission portion 112 of the claw 11 extends outward from the mounting base 13, and the claw 11 expands. As the claw 11 expands within the center hole 31 in the rubber strip 3, it contacts the inner wall of the center hole 31 in the rubber strip 3, achieving a stable connection between the connection mechanism 1 and the rubber strip 3. When the connection mechanism needs to be separated from the center hole 31 in the middle of the rubber strip 3, the transmission portion 112 of the claw 11 retracts into the mounting base 13, separating the claw 11 from the rubber strip 3, and the connection mechanism 1 and the rubber strip 3 can be smoothly disconnected.

[0039] The conical transmission component 12 in this embodiment is generally conical in shape and is housed within a transmission cavity 131 of the mounting base 13. The front end of the conical transmission component 12 is conical, and the transmission portion 112 of the claw 11 extends into the transmission cavity 131, where it contacts the front end of the conical transmission component 12. As the conical transmission component 12 rotates, it moves forward or backward within the transmission cavity 131, causing the claw 11 to expand or retract.

[0040] The following illustrates a working scenario: When the conical transmission component 12 rotates forward, it moves toward the front end of the transmission cavity 131. Because the transmission portion 112 of the claw 11 contacts the surface of the conical transmission component 12, the conical transmission component 12 pushes the transmission portion 112 of the claw 11 outward, causing the claw 11 to expand. When the conical transmission component 12 rotates backward, it moves toward the rear end of the transmission cavity 131. Because the transmission portion 112 of the claw 11 is no longer pushed by the conical transmission component 12, the claw 11 retracts.

[0041] In order to reduce the friction between the transmission portion 112 of the supporting claw 11 and the conical transmission component 12, in this embodiment, a ball 111a is configured on the transmission portion 112 of the supporting claw 11. The ball 111a realizes contact transmission with the conical transmission component 12, thereby preventing the transmission portion 112 of the supporting claw 11 and the surface of the conical transmission component 12 from being damaged by friction.

[0042] To prevent the claw 11 from protruding outward when in the retracted position, this embodiment provides a receiving groove on the outer wall of the mounting base 13. The shape of the receiving groove matches the connecting portion 111 of the claw 11. When the claw 11 is in the retracted position, the claw 11 is accommodated within the receiving groove and does not protrude from the surface of the mounting base 13. Obviously, when the claw 11 does not protrude from the surface of the mounting base 13, the connection mechanism 1 is more convenient to insert into the central hole 31 in the middle of the rubber strip 3.

[0043] In order to ensure that the claw 11 can automatically retract into the receiving groove of the mounting seat 13 when the conical transmission component 12 rotates in the reverse direction, the present embodiment provides a return cavity in the path of the mounting channel of the mounting seat 13, and the return cavity is a conical cavity. The mounting channel extends into the transmission cavity 131 through the return cavity. At the same time, a return spring 14 is provided inside the return cavity. A matching portion is provided on the transmission portion 112 of the claw 11, and the matching portion is an annular protrusion. The return spring 14 is specifically sleeved on the transmission portion 112 of the claw 11, and one end of the return spring 14 contacts the matching portion, and the other end of the return spring 14 contacts the inner wall of the return cavity.

[0044] Take an application scenario as an example: when the conical transmission component 12 rotates forward, since the transmission part 112 of the supporting claw 11 contacts the surface of the conical transmission component 12, the conical transmission component 12 can push the transmission part 112 of the supporting claw 11 outward, and the return spring 14 is gradually compressed at this time; when the conical transmission component 12 rotates reversely, since the transmission part 112 of the supporting claw 11 is no longer pushed by the conical transmission component 12, the return spring 14 in the compressed state rebounds, thereby driving the transmission part 112 of the supporting claw 11 to retract into the accommodating groove of the mounting seat 13.

[0045] It is understandable that, in this embodiment, each claw 11 may be correspondingly configured with a return spring 14 , thereby ensuring that each claw 11 can automatically return to its original position and preventing the claw 11 from protruding.

[0046] In order to drive the conical transmission component 12 to rotate and lock the conical transmission component 12 when the claw 11 is in the extended state to prevent the conical transmission component 12 from rotating, this embodiment is further provided with a transmission structure.

[0047] The transmission structure 15 of this embodiment includes a threaded barrel 151 , an operating rod 152 and a locking ring 153 .

[0048] The threaded barrel 151 is cylindrical, with its front end fixedly connected to the conical transmission component 12. In practice, the front ends of the threaded barrel 151 and the conical transmission component 12 can be welded together. The outer surface of the threaded barrel 151 is provided with external threads, while the inner wall of the transmission chamber 131 is provided with internal threads. The threaded barrel 151 is threadedly mounted within the transmission chamber 131. Rotation of the threaded barrel 151 pushes the conical actuator forward or backward.

[0049] The operating rod 152 is a cylindrical rod with a polygonal operating handle at its end. The user can rotate the operating rod 152 by holding the operating handle. The front end of the operating rod 152 is housed within the threaded barrel 151. The surface of the operating rod 152 is also provided with a limit protrusion 152a, which is a straight-line protrusion and is located on the upper and lower outer walls of the operating rod 152. The cross-section of the limit protrusion 152a is in the positive direction and is generally straight-line, extending along the length of the operating rod 152. The inner wall of the threaded barrel 151 is provided with a transmission groove 151a, which has a rectangular cross-section. The transmission groove 151a is arranged parallel to the limit protrusion 152a, and the width of the transmission groove 151a is slightly larger than the width of the limit protrusion 152a. For example, when the cross-sectional width of the limiting protrusion 152a is 1 cm, the cross-sectional width of the transmission groove 151a is 1.5 cm.

[0050] For example, when the limiting protrusion 152a is inserted into the transmission groove 151a, the operating rod 152 is rotated. The limiting protrusion 152a and the transmission groove 151a drive the threaded barrel 151 to rotate. Since the threaded barrel 151 is fixedly connected to the conical transmission component 12, the rotation of the threaded barrel 151 drives the conical transmission component 12 to rotate as well.

[0051] In this embodiment, a locking ring 153 is also mounted on the inner wall of the transmission chamber 131. The locking ring can be attached to the inner wall of the transmission chamber 131 by means of threads or adhesive. The locking ring 153 is located at the rear end of the threaded barrel 151, and the operating rod 152 is also accommodated in the inner ring of the locking ring 153. The inner ring of the locking ring 153 is provided with a locking groove 153a. There are multiple locking grooves 153a, and the multiple locking grooves 153a are distributed in a circular shape.

[0052] The following describes the operation of operating rod 152: When the operator needs to rotate threaded barrel 151 using operating rod 152, they push operating rod 152 forward. The limiting protrusion 152a on operating rod 152 engages only with the transmission groove 151a on threaded barrel 151. The operator then rotates operating rod 152, and the threaded barrel 151 rotates through the transmission between limiting protrusion 152a and transmission groove 151a. After connecting mechanism 1 and rubber strip 3 are connected, operating rod 152 is moved backward. The limiting protrusion 152a on operating rod 152 engages simultaneously with transmission groove 151a and locking groove 153a. Because locking groove 153a is fixed, operating rod 152 is locked, preventing threaded barrel 151 from rotating. When threaded barrel 151 is unable to rotate, conical transmission component 12 also cannot rotate, preventing pawl 11 from accidentally retracting.

[0053] It should be noted that, since the width of the limiting protrusion 152a in this embodiment is smaller than the width of the transmission groove 151a, when the operation is completed and the operating rod 152 moves backward, the limiting protrusion 152a on the operating rod 152 cannot be accurately stuck in the locking groove 153a (that is, the position of the limiting protrusion 152a after retreating is exactly between the two locking grooves 153a, and the limiting protrusion 152a cannot be accurately inserted into the locking groove 153a). At this time, the operating rod 152 can be properly rotated to appropriately rotate the position of the limiting protrusion 152a, thereby ensuring that the limiting protrusion 152a can be more accurately inserted into the locking groove 153a, which is more convenient to use.

[0054] It should be noted that: in this embodiment, when the limiting protrusion 152a of the operating rod 152 is embedded in the locking groove 153a, the operating rod 152 is locked, thereby avoiding the problem of accidental collision with the operating rod 152 during the installation of the rubber strip 3, which may cause the support claw 11 to retract accidentally and the connection between the connecting mechanism 1 and the rubber strip 3 to be disconnected.

[0055] like Figure 7 As shown, the traction mechanism 2 of this embodiment specifically includes a frame 21, a steering wheel 23, a traction rope 24 and a storage cylinder 22. The frame 21 of this embodiment can be the frame 21 in the prior art. A storage cylinder 22 is installed at the upper end of the frame 21, and the storage cylinder 22 is cylindrical. The storage cylinder 22 can be rotated by manual operation, or the storage cylinder 22 can be driven to rotate by a drive motor or other equipment. One end of a traction rope 24 is wound around the storage cylinder 22. The other end of the traction rope 24 is fixedly connected to the tail end of the connecting mechanism 1. Specifically, the traction rope 24 can be connected to the tail end of the operating rod 152, or the traction rope 24 can be fixedly connected to the outer wall of the mounting seat. At the same time, the steering wheel 23 is arranged at the lower end of the frame 21, and the traction rope 24 is fixedly connected to the connecting mechanism 1 after being turned by the steering wheel 23.

[0056] It can be understood that since the steering wheel 23 is set at the lower end, when the traction rope 24 is turned by the steering wheel 23 and then fixedly connected to the connecting mechanism 1, the traction rope 24 can be as close to the horizontal state as possible, and the traction rope 24 will not be in an inclined state, avoiding friction with the side wall of the expansion joint, and further preventing the traction rope 24 from being damaged by friction.

[0057] To securely install the rubber strip 3 within the ballastless track expansion joint, this embodiment provides connectors 32 at both ends of the rubber strip 3. Furthermore, a connecting cavity 4 is provided at the end of the ballastless track expansion joint. This cavity 4 comprises a first cavity 41 distal to the rubber strip 3 and a second cavity 42 proximal to the rubber strip 3. The shape of the second cavity 42 matches that of the connector 32. During installation, the connector 32 is manually installed within the first cavity 41. A pushing member is then positioned within the first cavity 41 and moved along the first cavity 41 by pulling or pushing. As the pushing member moves within the first cavity 41, it compresses the connector 32, forcing it into the second cavity 42. Once the connector 32 enters the second cavity 42, it mates with the second cavity 42, securing it in place and sealing the opening of the second cavity 42.

[0058] The following describes the specific process for installing the rubber strip 3 using the installation device of this embodiment: When the rubber strip 3 is not installed in the expansion joint, it is located outside the expansion joint. Therefore, the user first extends the connecting mechanism 1 from one end of the expansion joint to the other end of the expansion joint, and then connects the connecting mechanism 1 to the rubber strip 3 (the specific connection method can be referred to the above description). Then, the storage cylinder 22 rotates, and the storage cylinder 22 drives the traction rope 24 to move. When the traction rope 24 moves, the traction rope 24 drives the connecting mechanism 1 to move along the direction in which the expansion joint is set. As the connecting mechanism 1 moves, the rubber strip 3 is dragged into the expansion joint. Finally, when the connecting mechanism 1 exits the expansion joint from the end of the expansion joint, the rotation of the storage cylinder 22 is stopped, and then the connecting mechanism 1 is disconnected from the rubber strip 3, thus achieving the installation of the rubber strip 3 inside the expansion joint.

[0059] After the rubber strip is driven and installed into the expansion joint, the connecting portion of the rubber strip is installed into the second cavity.

[0060] Example 2

[0061] This embodiment is improved on the basis of embodiment 1, such as Figure 8 and Figure 9 As shown, this embodiment is designed for ease of operation and to achieve automatic rearward locking of the operating rod 152. The transmission structure of this embodiment also includes a fixed cylinder 155, a locking spring 154 and a bearing 156. The fixed cylinder 155 of this embodiment is a circular cylinder, and the fixed cylinder 155 is fixedly welded to the conical transmission component 12. The locking spring 154 is accommodated inside the fixed cylinder 155, so that the locking spring 154 remains stably compressed or rebounds, thereby preventing the locking spring 154 from tilting. One end of the locking spring 154 is accommodated inside the fixed cylinder 155, and a bearing 156 is provided at the other end of the locking spring 154. The locking spring 154 is fixedly connected to the outer ring of the bearing 156. The inner ring of the bearing 156 is sleeved and mounted on the front end of the operating rod 152.

[0062] For example, when the user pushes the operating rod 152 forward, the locking spring 154 is compressed. When the user releases the operating rod 152, the compressed locking spring 154 drives the operating rod 152 backward, and the limiting protrusion 152a on the operating rod 152 is embedded in the locking groove 153a of the locking ring 153.

[0063] It can be understood that in this embodiment, since the bearing 156 is provided to cooperate with the locking spring 154, when the operating rod 152 is located in a position that does not match the locking groove 153a and needs to be rotated appropriately, the operating rod 152 rotates, and the locking spring 154 will not rotate with the operating rod 152, thereby avoiding twisting and deformation of the locking spring 154.

[0064] Example 3

[0065] This embodiment is improved on the basis of embodiment 2, as shown in FIG. Figure 11 As shown, due to the very complex on-site construction environment, there are many gravels and impurities. Therefore, in order to prevent gravels and impurities from entering the interior of the mounting seat 13 through the transmission chamber 131, causing the locking spring 154 to be stuck and the bearing 156 to be entered by impurities, this embodiment is also equipped with a sealing cover 157. The sealing cover 157 is a circular cover body, and one end of the sealing cover 157 is open. The diameter of the sealing cover 157 is slightly smaller than the diameter of the transmission chamber 131, so that the sealing cover 157 will not interfere with the forward and backward movement of the operating rod 152. At the same time, the sealing cover 157 also has the effect of isolating impurities and gravels from contacting the locking spring 154, thereby preventing the locking spring 154 from getting stuck.

[0066] In this embodiment, the sealing cover 157 is fixedly connected to the outer ring of the bearing 156, and the locking spring 154 is fixedly connected to the sealing cover 157. At the same time, the sealing cover 157 extends to cover the inner ring of the bearing 156, and a clearance exists between the sealing cover 157 and the inner ring of the bearing 156. When the sealing cover 157 covers the inner ring of the bearing 156, it can prevent gravel and impurities from entering the bearing 156. To further enhance the sealing between the sealing cover 157 and the inner ring of the bearing 156, a sealing groove 156a can be provided on the inner ring of the bearing 156, and a sealing protrusion 157a can be provided on the inner wall of the sealing cover 157. The sealing protrusion 157a is embedded in the sealing groove 156a. This ensures that the sealing cover 157 does not interfere with the rotation of the bearing 156 while further enhancing the sealing between the sealing cover 157 and the inner ring of the bearing 156.

[0067] It should be noted that when the closure cover 157 is not provided, the area available for connection between the locking spring 154 and the outer ring of the bearing 156 is relatively small (only the side surface of the outer ring of the bearing 156). However, when the closure cover 157 is provided, the entire side surface of the closure cover 157 is available for connection between the locking spring 154. Therefore, the connection between the locking spring 154 and the bearing 156 is more stable.

[0068] The above is only an embodiment of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for installing a rubber strip for a ballastless track expansion joint, characterized by: include The connecting mechanism includes a claw, a conical transmission component, a return structure, and a mounting seat. The claw is retractably mounted on the mounting seat. The conical transmission component is disposed inside the mounting seat. The claw is provided with a transmission portion that is in transmission contact with the conical transmission component. The conical transmission component rotates to extend or retract the claw. The return structure includes a return spring and a mating portion. The mating portion is disposed on the claw. One end of the return spring engages with the mating portion, and the other end of the return spring engages with the mounting seat. The transmission structure comprises a threaded cylinder, an operating rod, a locking spring, a bearing, a fixed cylinder and a locking ring, the threaded cylinder is mounted on the mounting seat by a thread, and the threaded cylinder is fixedly connected to the conical transmission component, the inner wall of the threaded cylinder is provided with a transmission groove, the locking ring is provided at the rear end of the threaded cylinder, and the inner ring of the locking ring is provided with a plurality of locking grooves distributed in an annular manner; a limiting protrusion is provided on the surface of the operating rod, and the width of the limiting protrusion is smaller than the width of the transmission groove, the bearing sleeve is mounted on the operating rod, the locking spring is provided at the front end of the operating rod, the locking spring is accommodated in the fixed cylinder, one end of the locking spring is connected to the outer ring of the bearing, and the other end of the locking spring is connected to the conical transmission component; when the operating rod moves forward, the limiting protrusion is embedded in the transmission groove, and when the operating rod moves backward, the limiting protrusion is engaged with the transmission groove and the locking groove; and The traction mechanism includes a traction rope and a storage cylinder. The storage cylinder is connected to the traction rope. The storage cylinder is used to drive the traction rope to move. The traction rope is connected to the connecting mechanism.

2. The mounting device according to claim 1, wherein: The mounting seat is configured with a return cavity, and the return spring is located inside the return cavity.

3. The mounting device according to claim 1, wherein: At least three supporting claws are provided and are installed on the mounting seat in a ring shape.

4. The mounting device according to claim 1 or 3, characterized in that: The supporting claws are T-shaped or L-shaped.

5. The mounting device according to claim 1, wherein: The supporting claw is provided with an anti-slip protrusion, and the anti-slip protrusion is corrugated.

6. The mounting device according to claim 1, wherein: A ball is provided at the end of the transmission part, and the ball is in rolling contact with the conical transmission component.

7. The mounting device according to claim 1, wherein: The traction mechanism also includes a frame and a steering wheel. The storage cylinder is installed on the frame. The steering wheel is installed at the lower end of the frame and is located below the storage cylinder. The traction rope is connected to the connecting mechanism by being turned by the steering wheel.

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