A damping spring device and working method applicable to a movable core switch

Abstract

The present invention relates to a damping spring device applicable to a movable core switch. A partition plate is installed between a rubber spring assembly and a limit plate, and a gap is formed between the rubber spring assembly and the limit plate to accommodate the structural expansion generated during the torsional deformation of the rubber spring. The limit plate is installed at the positions of the partition plate and the intermediate shaft, and the rubber spring assembly is installed in a fixed bracket between a guide rail and a movable rail using a connecting piece. Advantages: First, the overall structure of the rubber spring structure is simple, and installation, disassembly, and maintenance are convenient; second, the combined use of the split metal skeleton spring structure can meet the requirements of different spring stiffnesses; the skeleton spring can be used for forward and reverse tension-compression, overcoming the functional disadvantages of the original cylindrical torsion spring; third, the vulcanized fixing plate and the special-shaped fastening nut on the outer cover of the rubber spring are beneficial to improving the service life and maintainability of the rubber spring; fourth, the designed limit plate structure realizes the angular limit between the guide rail and the movable rail after the guide rail is switched in place.

Description

Technical Field

[0001] The present invention relates to a damping spring device and a working method applicable to a movable core switch, mainly used for a damping spring connecting device for switching between a guide rail and a movable rail. On the basis of meeting the structural requirements of the movable core rail, the spring device has the characteristics of rapid replacement, simple operation, being able to meet the requirements of the positive and reverse turning of the switch and having a long service life. Background Art

[0002] A switch is a special device for changing tracks in a railway track. In the structural design of a movable core switch, the turning process of the switch mainly relies on the switching drive between the movable rail and the guide rail to complete the mutual conversion between "straight - curve" of the track. During the switching process of the movable rail, the guide rail is located at the end of the rotation center of the movable rail. During the rotation process of the core rail, after the guide rail contacts the switch beam body, there will be a small - angle position rotation between the guide rail and the movable rail. During the rotation process, due to the influence of the turning speed, the movable rail needs to maintain a stable follow - up state and overcome the conversion inertia moment. Generally, a torsion spring device is arranged at the connection position between the guide rail and the movable rail. Through the setting of the spring device, the movable rail can maintain the follow - up operation and adapt to the angle included angle when the turning is in place.

[0003] The existing connection device between the movable rail and the guide rail of a movable core switch generally adopts a structural form with a similar cylindrical torsion spring installed. This structure uses a buckle or a clamping plate to limit and fix the two ends of the cylindrical torsion spring at right angles. Due to the limitation of the installation space, it is relatively difficult to install the clamping plates at both ends. When the cylindrical torsion spring bears a compressive load, the spring can work normally; when the spring bears a tensile load, due to the spring structure, the rotation center changes, and the bearing capacity and stiffness of the spring decrease; since the movable rail needs to switch between the "straight - curve" surfaces and the switching frequency is relatively high, the torsion spring at this place has a low service life under the tensile - compressive load, requires frequent maintenance and replacement, and the replacement operation time is long, which affects the overall operation of the line. Summary of the Invention

[0004] Design Purpose: To avoid the deficiencies in the background art, design a damping spring device applicable to a movable core switch, mainly used for a damping spring connecting device and a working method for switching between a guide rail and a movable rail. On the basis of meeting the structural requirements of the movable core rail, the torsion spring device has the characteristics of rapid replacement, simple operation, being able to meet the requirements of the positive and reverse turning of the switch and having a long service life.

[0005] Design solution: To achieve the above design objectives, through the analysis of the working conditions of the torsion spring device, when the movable rail switches to the straight position, the movable rail is connected to the straight position of the guide rail, the curve side of the guide rail contacts the web of the turnout beam, and the spring connection device is in the straight position working state without angular action. When the movable rail is in the curve position, the straight side of the guide rail contacts the web of the turnout beam, and the spring connection device presents a certain working angle due to the influence of the turnout line type. The designed torsion spring device needs to meet the effective spring stiffness within the working angle range and a certain service life requirement.

[0006] According to the structural form of the connection between the guide rail and the movable rail, the two-way switching rotation generally uses a pin-type structure for intermediate connection. The torsion spring device is installed on the pin and the mounting seat, and a limit connection is set to limit the switching working angle when the guide wheel rail is in the curve position. The torsion spring connection device has structural characteristics such as meeting positive and negative bidirectional torsion, simple replacement operation, and long service life.

[0007] Through the comparison of working conditions and solutions, the present invention determines to use the structural form of "rubber spring + metal skeleton". The spring device mainly consists of a rubber spring assembly, a metal skeleton spring, a partition board, a limit board, and connecting parts, etc. A single group of the spring connection device consists of two groups of rubber spring units, and the spring device meets the requirements of positive and negative rotation. The metal skeleton spring is designed as a split structure. A single group consists of 3 - 4 groups of spring units according to different required stiffnesses and can be installed and used according to the actual stiffness. The partition board is installed between the rubber spring and the limit board, and the limit board is installed at the positions of the partition board and the intermediate shaft. The rubber spring unit is installed in the installation connection seat between the guide rail and the movable rail using a connecting part.

[0008] The spring device selects rubber types that are oil-resistant, high-temperature-resistant, and anti-creeping. To ensure the external dimensions of the rubber block and improve the installation and replacement efficiency, an installation fixing frame (plate) is vulcanized on the outside of the rubber, and a special-shaped fastening nut is welded on the fixing frame. The rubber spring and the fixing frame are vulcanized into a whole. When replacing the rubber spring, the installation bolts can be removed to remove the spring device as a whole, and the spring replacement is convenient and fast.

[0009] The split structure design of the metal skeleton spring is beneficial to realizing the combined adjustment and use of the metal spring according to different spring stiffness requirements. The partition board is installed between the limit board and the spring device, and a certain release space is formed in this area to release the structural expansion caused by the deformation of the rubber spring.

[0010] Technical solution 1: A damping spring device applicable to a movable core turnout. The partition board is installed between the rubber spring assembly and the limit board, forming a gap between the rubber spring assembly and the limit board to adapt to the structural expansion generated during the torsional deformation of the rubber spring. The limit board is installed at the positions of the partition board and the intermediate shaft, and the rubber spring assembly is installed in the fixed bracket between the guide rail and the movable rail using a connecting part.

[0011] Technical Solution 2: A working method of a damping spring device applicable to a movable core switch. The damping spring device is used for the rotational connection between the movable rail and the guide rail of the switch. The guide rail is installed at the end of the movable rail by means of a central pin. The damping spring device is used for the switch operation of the movable rail and the guide rail. The "straight - curve" conversion of the switch track can be realized through the switch operation of the switch; during the rotation process of the movable rail during the switch operation, the guide rail rotates with the movable rail during the switch operation. After the movable rail reaches the switch position, the head position of the guide rail contacts the inner web of the switch beam body. The guide rail and the movable rail rotate at a small angle around the central pin. During this process, the rubber spring device installed in the fixed brackets at both ends of the guide rail and the movable rail twists and rotates. During the rotation process, since a metal skeleton spring is installed in the two groups of rubber springs, the combined action of the rubber spring and the metal skeleton spring can, while meeting the need for the guide rail to rotate with the movable rail during the switch operation, overcome the inertial moment when the guide rail rotates with the movable rail, ensuring the working state of the guide rail; a limit plate is installed on the spring assembly. The limit plate is connected to the fixed part and the central pin shaft by fasteners, and can play the role of angle limit after the guide rail reaches the switch position. A partition is installed between the spring assembly and the limit plate and is connected to the central pin, forming a certain gap between the spring assembly and the limit plate to adapt to the compression and expansion of the rubber during the switch operation. This damping spring device can be used in both forward and reverse torsion working states.

[0012] Compared with the background technology, the present invention has the following advantages: First, the overall structure of the rubber spring structure is simple, and the installation, disassembly and maintenance are simple and convenient, realizing the rapid replacement and maintenance of the torsion spring device and shortening the operation time; second, the combined use of the split - type metal skeleton spring structure can meet the requirements of different spring stiffnesses; the skeleton spring can be used in both forward and reverse pulling - pressing, overcoming the functional defects of the original cylindrical torsion spring; third, the vulcanized fixing plate and the special - shaped fastening nut on the outer cover of the rubber spring are beneficial to improving the service life and maintainability of the rubber spring; fourth, the designed limit plate structure realizes the angle limit between the guide rail and the movable rail after the guide rail reaches the switch position. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of a damping spring device applicable to a movable core switch.

[0014] Figure 2 is Figure 1 The top view (partial sectional view) schematic diagram of

[0015] Figure 3 is Figure 1 The three - dimensional schematic diagram.

[0016] Figure 4 It is a schematic diagram of the rubber spring assembly.

[0017] Figure 5 It is a schematic diagram of the metal skeleton spring.

[0018] Figure 6 It is a schematic curve diagram of the spring connection device.

[0019] Figure 7 It is a schematic straight line diagram of the spring connection device.

[0020] Figure 8 It is a three-view schematic diagram of the background technology (cylindrical torsion spring structure plan). Specific Embodiments

[0021] Embodiment 1: Refer to the appendix Figure 1-7 A damping spring device applicable to a movable core switch. The partition plate 5 is installed between the rubber spring assembly 1 and the limit plate 6, and a gap is formed between the rubber spring assembly 1 and the limit plate 6 to adapt to the structural expansion generated during the torsional deformation of the rubber spring. The limit plate 6 is installed at the positions of the partition plate 5 and the intermediate shaft 7. The rubber spring assembly 1 is installed in the fixed bracket 3 between the guide rail 8 and the movable rail 9 using a connecting piece. The rubber spring assembly 1 is composed of an installation fixing frame 1-1 and a rubber spring 1-2; the outer side of the rubber spring of the fixing frame 1-1 is a skeleton, usually made of a 2mm steel plate, which is a cage for the rubber, and at the same time, a spring fixing nut is prefabricated and welded. The rubber spring assembly can be installed in the fixed bracket 3 using bolts. The rubber spring 1-2 is vulcanized with the installation fixing frame 1-1 on the outer side, and a special-shaped fastening nut is welded on the fixing frame. The rubber spring and the fixing frame are vulcanized as a whole. When replacing the rubber spring, the spring device can be removed as a whole by removing the installation bolts. The metal skeleton spring 2 is embedded in the rubber spring 1. The rubber spring assembly 1 located in the fixed bracket 3 is connected by bolts using a fastener 4. The damping spring device is composed of two groups of rubber springs. The fixed bracket 3 is two groups of C-shaped components. The limit plate 6 is embedded in the fixed bracket 3 and is connected to the rubber spring 1 using a fastening bolt. One side of the limit plate 6 is designed as an inclined edge, which plays an angle limiting role during the switch conversion process of the guide rail.

[0022] That is, the composition structure of the damping spring connection device is shown in Figure 1-6 as shown, and the component is mainly composed of 6 part assemblies. The main structures and functions of each assembly are as follows:

[0023] The rubber spring assembly 1 is the main structural part of the connection device, mainly composed of two parts: the spring skeleton 1-1 and the rubber spring 1-2. Among them, a fixed special-shaped nut is welded and prefabricated on the spring skeleton 1-1, and the special-shaped nut is vulcanized in the rubber spring, which improves the adhesion of the vulcanized rubber while meeting the connection tightness. The rubber uses a high-performance rubber product with oil resistance, high temperature resistance, and corrosion resistance, effectively improving the service life of the rubber. Among them, the structure of the rubber unit part meets the functional use requirements of the forward and reverse directions of the movable rail. Each group of connection devices uses 2 groups of rubber spring unit parts.

[0024] The metal skeleton spring 2 is made of spring steel and has a serpentine skeleton structure. During installation, it is embedded in the rubber spring unit. The skeleton spring adopts a split structure, and 3 - 4 sets of each group of connecting devices are installed and used, which can be adjusted according to different stiffness requirements. The serpentine skeleton spring structure meets the functional requirements of the movable rail for forward and reverse rotation, effectively improving problems such as the weakening of the tensile stiffness existing in the original cylindrical torsion spring structure during use.

[0025] The fixed brackets 3 are two groups of C - shaped components. The rubber spring assembly 1 is placed in the fixed brackets 3 installed at both ends of the movable rail 8 and the guide rail 9, and bolted together using fasteners 4. Then, the metal skeleton spring 2 is embedded into the rubber unit.

[0026] The partition 5 is installed between the rubber spring assembly 1 and the limit plate 6, forming a certain amount of gap between the rubber spring assembly and the limit plate component to accommodate the structural expansion generated during the torsional deformation of the rubber spring.

[0027] The limit plate 6 is embedded in the fixed bracket 3 and connected to the rubber spring using fastening bolts. One side edge of the limit plate is designed as an inclined edge, which plays an angle - limiting role during the switch - turning process of the guide rail.

[0028] Embodiment 2: Based on Embodiment 1, a working method of a damping spring device applicable to a movable core switch is characterized in that: the damping spring device is used for the rotational connection between the movable rail 8 and the guide rail 9 of the switch. The guide rail 8 is installed at the end of the movable rail 9 by relying on the center pin 7. The damping spring device is used for the switch - turning of the movable rail 8 and the guide rail 9. Through the switch - turning of the switch, the "straight - curve" conversion of the switch track can be realized; during the rotation and return process of the movable rail 9, the guide rail 8 rotates with the movable rail during the switch - turning. After the movable rail 9 reaches the switch - turning position, the head position of the guide rail 8 contacts the inner web of the switch beam body. The guide rail 8 and the movable rail 9 rotate around the center pin 7 with a small - angle position change. During this process, the rubber spring device 1 installed in the fixed brackets 3 at both ends of the guide rail 8 and the movable rail 9 twists and rotates. During the rotation process, due to the installation of the metal skeleton spring 2 in the two groups of rubber springs 1, the combined action of the rubber spring 1 and the metal skeleton spring 2 can, while meeting the requirement of the guide rail 8 rotating with the movable rail 9 during the switch - turning, overcome the inertial moment when the guide rail 8 rotates with the movable rail 9, ensuring the working state of the guide rail 8; a limit plate 6 is installed on the spring assembly. The limit plate is connected to the fixed part 3 and the center pin shaft 7 by relying on fasteners, and can play an angle - limiting role after the guide rail reaches the switch - turning position ( Figure 6 ) The partition 5 is installed between the spring assembly 1 and the limit plate 6 and connected to the center pin 7, forming a certain gap between the spring assembly 1 and the limit plate 6 to accommodate the compression and expansion of the rubber during the switch - turning. This damping spring device can meet the requirements of forward and reverse torsional working states.

[0029] It should be understood that although the above embodiments have made a relatively detailed written description of the design concept of the present invention, these written descriptions are only simple written descriptions of the design concept of the present invention, rather than limitations on the design concept of the present invention. Any combination, addition or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A working method of a damping spring device applicable to a movable core switch, characterized in that: The central shaft hole of the double-wing metal skeleton spring is sleeved on the intermediate shaft. The left and right rubber spring components are respectively sleeved on the double-wing metal skeleton spring and located within the fixed brackets. The fixed brackets and the rubber spring components are fixed using fasteners. The limit plate is sleeved on the intermediate shaft through the partition plate. The damping spring device is used for the rotational connection between the movable rail and the guide rail of the switch. The guide rail is installed at the end of the movable rail by relying on the center pin. The damping spring device is used for the switch operation between the movable rail and the guide rail. The "straight - curve" conversion of the switch track can be achieved through the switch operation of the switch. During the rotational return process of the movable rail, the guide rail rotates along with the switch operation of the movable rail. After the movable rail reaches the switch position, the head position of the guide rail contacts the inner web of the switch beam body. The guide rail and the movable rail rotate at a small angle around the center pin. During this process, the rubber spring components installed in the fixed brackets at both ends of the guide rail and the movable rail twist and rotate. During the rotation process, due to the installation of the metal skeleton spring in the two groups of rubber spring components, the combined action of the rubber spring components and the metal skeleton spring can, while meeting the requirement of the guide rail rotating along with the switch operation of the movable rail, overcome the inertia moment when the guide rail rotates along with the movable rail, ensuring the working state of the guide rail. The limit plate is installed on the rubber spring component and is connected to the fixed bracket and the center pin shaft by relying on fasteners. After the guide rail reaches the switch position, it can play a role in angle limitation. The partition plate is installed between the rubber spring component and the limit plate and is connected to the center pin, forming a certain gap between the rubber spring component and the limit plate to adapt to the compression and expansion of the rubber during the switch operation. This damping spring device can meet the requirements of both forward and reverse torsional working states.

2. The working method of the damping spring device applicable to a movable core switch according to claim 1, characterized in that: The partition plate is installed between the rubber spring component and the limit plate, forming a clearance fit between the rubber spring component and the limit plate part.

3. The working method of the damping spring device applicable to a movable core switch according to claim 1, characterized in that: The left wing and the right wing of the double-wing metal skeleton spring are respectively in a rectangular wave structure, and the starting shapes of the left and right rectangular waves are opposite to each other.

4. The working method of the damping spring device applicable to the movable core switch according to claim 1, characterized in that: The limit plate is embedded in the fixed bracket and is connected to the rubber spring component using fastening bolts.

5. The working method of the damping spring device applicable to a movable core switch according to claim 1, characterized in that: One side of the limit plate is designed as an inclined edge, which plays an angle limitation role during the switch operation of the guide rail.

6. The working method of the damping spring device applicable to a movable core switch according to claim 1, characterized in that: The metal skeleton spring is designed in a split structure. A single group is composed of 3 - 4 spring units according to different required stiffnesses.

7. The working method of the damping spring device applicable to a movable core switch according to claim 1, characterized in that: Fixed brackets are respectively installed at both ends of the movable rail and the guide rail. The rubber spring components are placed in the fixed brackets. The intermediate shaft center pin is inserted into the central circular hole of the metal skeleton spring of the damping spring device through the connection holes of the movable rail and the guide rail, and then the limit plate and the fastening nut are used to compress and lock. Connection form: pin connection, clearance fit.

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