A camming mechanism for temporary track fastening

Abstract

The utility model discloses a cam pressing mechanism for the temporary track fixed, include: lengthened backing pad, the pressing axle of rotation assembly on lengthened backing pad, the spring of being stacked, the rotary pressing plate of being installed on the pressing axle and with the pressing cam articulated, the pressing or relaxation of rotary pressing plate to the pressing axle. The utility model discloses, as the auxiliary mechanism of temporary track fixed use, can effectively eliminate the gap between the socket joint between the bridge insertion section and the bridge fixed end, through the pressing fixed of bridge insertion section, makes it form a complete whole, can effectively resist the lateral force that possibly produces when the wheel passes, makes the bridge type crossing device thoroughly eliminate the vibration, and the operation is more stable and smooth, and its simple structure is reliable, and through the operation of convenient realization to the track's fixed and release.

Description

Technical Field

[0001] This utility model relates to the field of industrial park rail transit technology, and in particular to a cam clamping mechanism for temporary track fixing. Background Technology

[0002] When switching between the main and auxiliary rails in a cross-track system, the auxiliary rail needs to be placed on top of the main rail and secured; when switching back to the main rail, the auxiliary rail is removed. Therefore, the auxiliary rail needs to have a convenient, quick, and reliable securing mechanism. For example, as shown in the attached diagram... Figure 1 In the cross-track configuration shown, the secondary rails need to be fixed at both ends. Currently, there is no suitable solution, and conventional pressure plates are often used; however, disassembly is cumbersome and inconvenient.

[0003] Therefore, the applicant designed a cam clamping mechanism for temporary track fixing. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of inconvenience in fixing tracks in the prior art, and to propose a cam clamping mechanism for temporary track fixing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A cam clamping mechanism for temporary track fixing includes: an extended pad; a clamping shaft rotatably mounted on the extended pad; a stacked spring and a rotating pressure plate mounted on the clamping shaft; and a clamping cam hinged to the clamping shaft to apply pressure or release the rotating pressure plate.

[0006] In some embodiments, the extended pad has a double-sided stepped hole, and the lower end of the clamping shaft is integrally provided with a disc; the stacked spring fitted on the clamping shaft is inserted into the stepped hole on the extended pad from top to bottom.

[0007] In some embodiments, the stacked springs are configured as two opposing springs.

[0008] In some embodiments, the clamping cam is hinged to the top of the clamping shaft; the clamping cam is assembled using a pin and a cotter pin.

[0009] In some embodiments, the lower part of the clamping shaft is a cylinder with a rounded top, and the upper part is configured as two flat segments with planar sides.

[0010] In some embodiments, the rotating pressure plate has an elongated hole in the middle, which mates with the flat section of the pressing shaft; one end of the rotating pressure plate has an inclined surface facing downward to form a pressure head portion.

[0011] In some embodiments, the lower end of the rotating pressure plate is provided with a downwardly protruding arc edge on the inner side of the inclined surface.

[0012] In some embodiments, a limiting stage is provided on the side of the lower end of the rotating pressure plate away from the inclined surface.

[0013] In some embodiments, the clamping cam is U-shaped; the side profile of the two U-legs is composed of two elliptical lines with different radii.

[0014] In some embodiments, the clamping cam is provided with a lever.

[0015] Compared with the prior art, the present invention provides a cam clamping mechanism for temporary track fixing, which has the following beneficial effects.

[0016] 1. This utility model has a simple and reliable structure, and achieves the fixing and release of the track through convenient operation.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a cross-track system.

[0019] Figure 2 This is a diagram illustrating the idle state.

[0020] Figure 3 This is the inside view of the idle state.

[0021] Figure 4 This is a diagram illustrating the idle state of a single end.

[0022] Figure 5 This is a magnified view of the idle state.

[0023] Figure 6 This is a schematic diagram of the compressed state.

[0024] Figure 7 This is a schematic diagram of the single-end compression state.

[0025] Figure 8 This is a partial side view of the compressed state.

[0026] Figure 9 This is a schematic diagram showing the clamping state of the rotating pressure plate.

[0027] Figure 10 This is a side view of the rotating pressure plate in its clamped state.

[0028] Figure 11 This is a schematic diagram of the lower structure of the rotating pressure plate.

[0029] Figure 12 This is a schematic diagram of the upper structure of the rotating pressure plate.

[0030] Figure 13 This is a schematic diagram of the clamping shaft.

[0031] Figure 14 This is an exploded state diagram of the present invention.

[0032] In the picture: 1. Extended pad; 11. Double-sided stepped hole; 2. Pressure shaft; 21. Circular disc; 3. Stacked springs; 4. Rotating pressure plate; 41. Elongated hole; 42. Inclined surface; 43. Rounded edge; 44. Limiting platform; 5. Pressing cam; 6. Wrench; 100. Fixed end of the bridge; 200. Inserted section of the bridge. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] like Figure 1 As shown, the secondary rail consists of two fixed bridge ends 100 and a bridge insertion section 200 that crosses the main rail. It is placed and fixed when the secondary rail is in use, and removed when the main rail is in use. Since the fixed bridge ends 100 and the bridge insertion section 200 are connected by a socket joint with a gap (a few millimeters of gap is required for assembly and disassembly), when a vehicle passes, the bridge insertion section 200 may be displaced outwards by lateral force under the action of the wheel flange, resulting in vibration or a jerking sensation. To eliminate this phenomenon, the cam clamping mechanism of this solution is used to fix the position of the bridge insertion section 200.

[0035] Please see Figures 2-14 A cam clamping mechanism for temporary track fixing, comprising: An extended pad 1; a pressure shaft 2 rotatably mounted on the extended pad 1; a stacked spring 3 and a rotating pressure plate 4 mounted on the pressure shaft 2; and a pressure cam 5 hinged to the pressure shaft 2 to apply pressure or release pressure to the rotating pressure plate 4.

[0036] The extended pad 1 provides a bottom support surface for the docking position of the bridge fixed end 100 and the bridge insertion section 200, and the clamping shaft 2 is assembled on the inner side of the track. After the overall assembly, an outward thrust and a downward pressure are applied to the bridge insertion section 200 to fix the track.

[0037] The extended pad 1 is made of rectangular steel plate. Its thickness and width are the same as other track pads, but its length (in the direction of track extension) is greater than that of similar pads. The extended pad 1 is used as the base plate for track installation. One end is used to assemble the cam clamping mechanism to fix the bridge insertion section 200, and the other end is used to install right-angle anchor bolts. The bridge fixing end 100 is connected and fixed to the foundation through the track pressure plate, washer, nut, etc.

[0038] On the extended pad 1, a double-sided stepped hole 11 is provided on the inner side of the end corresponding to the bridge insertion section 200. A disc 21 is integrally provided on the lower end of the clamping shaft 2. The disc 21 is embedded in the lower stepped hole from bottom to top, forming a pull-out resistant rotational assembly state.

[0039] It is understandable that the double-sided stepped hole 11 forms a step at both the upper and lower ends of the extended pad 1; the thickness of the disc 21 is less than the depth of the step at the lower end; and in the assembled state, the disc 21 does not protrude downwards.

[0040] The stacked spring 3, which is mounted on the clamping shaft 2, is inserted into the stepped hole on the extended pad 1 from top to bottom; the rotating pressure plate 4 is mounted on the clamping shaft 2 from top to bottom and presses on the stacked spring 3, and is bounced up by the stacked spring 3.

[0041] Preferably, the stacked springs 3 are configured as two in a pair to increase the stroke of the elastic support.

[0042] The pressing cam 5 is hinged to the top of the pressing shaft 2; by swinging around the hinge shaft, different amounts of downward pressure are formed; in conjunction with the stacked spring 3, the downward pressing and fixing and the release lifting of the rotating pressure plate 4 are realized.

[0043] Furthermore, a lever 6 is provided on the clamping cam 5 for easy operation.

[0044] During use, the rotating pressure plate 4, under the action of the clamping cam 5, can move downward to clamp; when the clamping cam 5 is released, it is lifted a certain distance under the action of the stacked spring 3, disengaging from the bottom of the rail; as Figures 2-5 As shown, the rotating pressure plate 4 rotates with the pressure shaft 2 until it is parallel to the track axis and is in a ready state (at this time, the pressure cam 5 can be pressed down or released).

[0045] In some embodiments, the lower part of the clamping shaft 2 is a cylinder with a rounded top, and the upper part is configured as two flat sections with flat sides; a round hole is opened near the top of the clamping shaft 2 for assembling the clamping cam 5.

[0046] Preferably, the clamping cam 5 is assembled using a pin and a cotter pin.

[0047] In some embodiments, the rotating pressure plate 4 has a basically the same structural shape as the track pressure plate, and plays a role in pressing and fixing the bottom of the bridge insertion section 200.

[0048] like Figure 12 As shown, the rotating pressure plate 4 has an elongated hole 41 in the middle, which cooperates with the flat section of the pressing shaft 2 and is driven by the pressing shaft 2; one end of the rotating pressure plate 4 has an inclined surface 42 facing downward to form a pressure head part, which is used to push and press the track outward.

[0049] The slope of the inclined surface 42 is adapted to the slope of the rail bottom of the bridge insertion section; in general specifications, the slope of the inclined surface 42 is 1:3.

[0050] In some embodiments, the lower end of the rotating pressure plate 4, located inside the inclined surface 42, is provided with a downwardly protruding arc edge 43; during the downward pressing and fixing rotation process, the arc edge 43 squeezes the track and pushes it outward (it may not contact it, depending on the initial position of the bridge insertion section 200); after it is in place, the arc edge 43 presses against the track or a certain gap (finally the inclined surface 42 pushes the track outward into place).

[0051] In some embodiments, a limiting platform 44 is provided at the lower end of the rotating pressure plate 4, on the side away from the inclined surface 42; wherein, the lower end of the limiting platform 44 is not higher than the arc edge 43 (i.e., the downward extension length is greater than or equal to the arc edge 43); in the fixed state, the limiting platform 44 is close to the extended pad 1 to avoid excessive pressure on the stacked spring 3; and it is a stable fixed state.

[0052] In some embodiments, the clamping cam 5 is U-shaped; the side profile of the two U-legs is composed of two elliptical lines with different radius differences (e.g., 5+3mm); a pin hole is provided through the U-legs to form different downward pressure under rotational adjustment.

[0053] like Figure 4 As shown, the U-shaped leg of the clamping cam 5 is connected to the clamping shaft 2 in the middle by a socket, and is connected as a whole by standard parts such as pins, flat washers, and cotter pins.

[0054] In some embodiments, the U-shaped back of the clamping cam is provided with a threaded hole for mounting the lever 6.

[0055] Preferably, the lever 6 is shaped like a small shaft with a ball on the right end and an external thread on the left end that connects and fixes to the threaded hole of the clamping cam 5, making operation more comfortable.

[0056] Installation of the cam clamping mechanism: After all parts are manufactured, they are installed and put into use.

[0057] First, insert the clamping shaft 2 into the double-sided stepped hole 11 from under the extended pad 1. After the right-angle anchor bolt, track pressure plate, and bridge fixing end 100 are installed, install two mating stacked springs 3 and rotating pressure plate 4 on the clamping shaft 2 in sequence. Connect the clamping cam 5 and the lever 6 as one unit, and then connect the clamping cam 5 and the clamping shaft 2 through the pin, flat washer, and cotter pin. The cam clamping mechanism is now installed.

[0058] How to operate the cam clamping mechanism.

[0059] like Figures 2-5 As shown, the cam clamping mechanism is in standby mode.

[0060] Rotate lever 6 along the pin axis in the vertical plane to the relaxed state; at this time, the clamping cam 5 is in the small radius range of the elliptical line (e.g., 17.5~22.5mm); under the action of the stacked spring 3, the bottom surface of the rotating pressure plate 4 disengages from the upper surface of the extended pad 1 and automatically lifts up; there is a gap between the upper surface of the rotating pressure plate 4 and the small radius elliptical line of the clamping cam 5 (achieved by matching the radius of the clamping cam 5 and the elastic stroke of the stacked spring 3); rotate lever 6 in the horizontal plane to make the cam clamping mechanism rotate to be parallel to the rail axis, and the rotating pressure plate 4 is separated from the bottom of the rail under the drive of the clamping shaft 2 and placed parallel to the rail axis, and the cam clamping mechanism is in the relaxed and ready state.

[0061] like Figures 6-10 As shown, the cam clamping mechanism is in the clamping state.

[0062] After the bridge insertion section 200 is placed corresponding to the bridge fixed end 100, if it is in the pressed state, first adjust the lever 6 to the relaxed position in the vertical plane along the pin axis; rotate the lever 6 in the horizontal plane so that the head of the rotating pressure plate 4 is perpendicular to the axis of the bridge insertion section 200, and the pressure head part (inclined surface 42) of the rotating pressure plate 4 is located above the bottom of the rail; at this time, operate the lever 6 to rotate along the pin axis, rotating it to the outside in the vertical plane; at this time, the clamping cam 5 is in the large radius (e.g., 22.5~25.5mm) position range. As the lever 6 rotates, the gap between the clamping cam 5 and the rotating pressure plate 4, and between the rotating pressure plate 4 and the bottom of the rail, disappears; the cam clamping mechanism clamps the bridge insertion section 200, and under the action of the inclined surface of the pressure head part of the rotating pressure plate 4, the bridge insertion section 200 is forcibly pushed to the outside, thereby eliminating the gap between it and the bridge fixed end 100, so that the bridge insertion section 200 is clamped and fixed.

[0063] It should be noted that: when installing the cam clamping mechanism, one is arranged symmetrically at each end with the center section of the bridge insertion section 200; when the cam clamping mechanism is clamping, two people need to operate it simultaneously.

[0064] This utility model, used as an auxiliary mechanism for temporary track fixing, can effectively eliminate the gap between the plug-in joint between the bridge insertion section 200 and the bridge fixing end 100; by pressing and fixing the bridge insertion section 200, it forms a complete whole; it can effectively resist the lateral force that may be generated when the wheel passes, so that the bridge-type crossing device completely eliminates vibration and runs more smoothly.

[0065] This utility model has a simple and reliable structure; it achieves the fixing and releasing of the track through convenient operation.

[0066] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cam clamping mechanism for temporary track fixing, characterized in that, include: An extended pad (1); a pressure shaft (2) rotatably mounted on the extended pad (1); a stacked spring (3) mounted on the pressure shaft (2); a rotating pressure plate (4); and a pressure cam (5) hinged to the pressure shaft (2) to apply pressure or release pressure to the rotating pressure plate (4).

2. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, The extended pad (1) has a double-sided stepped hole (11), and the lower end of the pressing shaft (2) is integrally provided with a disc (21); the stacked spring (3) fitted on the pressing shaft (2) is inserted into the stepped hole on the extended pad (1) from top to bottom.

3. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, The stacked springs (3) are configured as two in a pair.

4. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, The clamping cam (5) is hinged to the top of the clamping shaft (2); the clamping cam (5) is assembled by a pin and a cotter pin.

5. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, The lower part of the clamping shaft (2) is cylindrical with a rounded top, and the upper part is set as two flat sections with flat sides.

6. The cam clamping mechanism for temporary track fixing according to claim 5, characterized in that, The rotating pressure plate (4) has an elongated hole (41) in the middle, which cooperates with the flat section of the pressing shaft (2); one end of the rotating pressure plate (4) has an inclined surface (42) facing downward to form a pressure head.

7. The cam clamping mechanism for temporary track fixing according to claim 6, characterized in that, The lower end of the rotating pressure plate (4) is provided with a downwardly protruding arc edge (43) on the inner side of the inclined surface (42).

8. The cam clamping mechanism for temporary track fixing according to claim 7, characterized in that, A limiting platform (44) is provided on the side of the lower end of the rotating pressure plate (4) away from the inclined surface (42).

9. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, The clamping cam (5) is U-shaped; the side profile of the two U-shaped legs is composed of two elliptical lines with different radii.

10. The cam clamping mechanism for temporary track fixing according to claim 1, characterized in that, A lever (6) is provided on the clamping cam (5).

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