Cold bending tool for screw spike

Abstract

The utility model relates to the technical field of cold bending tools, in particular to a cold bending tool for a screw spike. According to the technical scheme, the clamping control assembly comprises a first arc plate, a second hydraulic telescopic rod, a second arc plate, a shifting piece and an electromagnetic valve switch, the first arc plate slides on the side portion of an axial adjusting assembly, and the two ends of the second hydraulic telescopic rod are fixedly connected with the first arc plate and the axial adjusting assembly respectively; and a second arc plate is fixedly mounted at the end part of the first arc plate. According to the screw spike clamping device, along with movement of the second arc plates, the shifting piece is gradually extruded by the screw spike to rotate, so that the shifting piece rotates and presses the electromagnetic valve switch downwards, hydraulic pressure is stopped from flowing into the second hydraulic telescopic rod, the positions of the first arc plates and the second arc plates are fixed, and the screw spike is stably clamped by the multiple second arc plates; the diameter of the screw spike steel column does not need to be measured and the size of a clamping opening does not need to be adjusted, so that cold-bending efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cold bending fixture technology, and in particular to cold bending fixtures for spiral rail spikes. Background Technology

[0002] Spiral rail spikes are fasteners used in railway track construction. Their main function is to connect rails and sleepers and maintain track stability. Spiral rail spike cold bending fixtures are tools specifically designed to process raw materials into the specific curved shape of spiral rail spikes. They are mainly manufactured through cold working, avoiding problems such as changes in material properties that may occur during hot working.

[0003] Cold bending fixtures are used to select and install appropriate bending dies according to the required bending shape and size. When installing the dies, it is important to ensure that the dies are installed in the correct position and are firmly fixed. Different cold bending fixtures may have different dies installation methods, and it is generally necessary to operate in accordance with the equipment's instruction manual.

[0004] When using cold bending fixtures for spiral rail spikes of different diameters, the clamping size of the fixture needs to be adjusted according to the diameter of the spiral rail spike. Adjusting the fixture takes time and affects the cold bending efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that adjusting the clamping size of the tooling fixture affects the cold bending efficiency, and to propose a cold bending tooling for spiral road spikes.

[0006] The technical solution of this utility model: a cold bending fixture for spiral road spikes, including a worktable, a slider slidably connected to the top of the worktable, a cold bending die snapped into the top of the worktable, and an axial adjustment component provided on the side of the slider.

[0007] The clamping control assembly includes a first arc plate, a second hydraulic telescopic rod, a second arc plate, a lever, and a solenoid valve switch. The first arc plate slides on the side of the axial adjustment assembly. The two ends of the second hydraulic telescopic rod are fixedly connected to the first arc plate and the axial adjustment assembly, respectively. The second arc plate is fixedly installed at the end of the first arc plate. The lever is rotatably connected to the inner arc surface of the second arc plate near its end. The solenoid valve switch is fixedly installed on the inner arc surface of the second arc plate and on the rotation path of the lever.

[0008] The solenoid valve switch is connected to the second hydraulic telescopic rod via an electromagnetic hydraulic valve. Multiple first arc plates are provided, and the sides of the axial adjustment assembly are distributed in a ring at equal angles.

[0009] Optionally, the side of the lever contacts the spiral rail spike steel column, and the inner arc surfaces of the plurality of second hydraulic telescopic rods clamp the spiral rail spike steel column. Initially, the lever is in an inclined state.

[0010] Optionally, the inner arc surface of the second arc plate is provided with a groove, the groove completely accommodating the lever, and the solenoid valve switch is fixedly installed in the groove.

[0011] Optionally, a torque spring is elastically connected at the rotatable connection between the paddle and the second arc plate, and the inner diameter of the inner arc surface of the first arc plate is larger than the inner diameter of the second arc plate.

[0012] Optionally, the axial adjustment assembly includes a first hydraulic telescopic rod and a docking plate, wherein the first hydraulic telescopic rod is fixedly installed inside the slider, and the docking plate is fixedly installed at the end of the first hydraulic telescopic rod.

[0013] Optionally, the docking plate has a groove on the side facing the first arc plate, the second hydraulic telescopic rod is fixedly installed in the groove, and the first arc plate slides along the groove.

[0014] Optionally, the top of the workbench is provided with a guide groove, the cold bending die is located on the top of the workbench and near the end of the guide groove, two guide grooves are provided and symmetrically arranged on the top of the workbench, and the slider slides along the guide groove.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] In this invention, as the second arc plate moves, the paddle is gradually squeezed and rotated by the spiral spike, so that the paddle rotates and presses down the solenoid valve switch, thereby stopping the flow of hydraulic pressure into the second hydraulic telescopic rod, thus fixing the position of the first and second arc plates, so that multiple second arc plates stably clamp the spiral spike, eliminating the need to measure the diameter of the spiral spike steel column and adjust the size of the clamping opening, thereby improving the cold bending efficiency.

[0017] Furthermore, by extending the first hydraulic telescopic rod, the distance between the two mating plates is reduced, allowing the first and second arc plates to move along the axis, thereby increasing the area of ​​the clamping spiral rail spike steel column and improving clamping stability. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of one embodiment of the present invention is provided;

[0019] Figure 2 A schematic diagram of the paddle structure according to one embodiment of the present invention is provided;

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of the groove structure in part A;

[0021] Figure 4 This is a half-section diagram of the second arc plate structure.

[0022] Reference numerals: 1. Worktable; 2. Guide groove; 3. Slider; 4. Cold bending die; 5. Axial adjustment assembly; 51. First hydraulic telescopic rod; 52. Connecting plate; 6. Clamping control assembly; 61. First arc plate; 62. Second hydraulic telescopic rod; 63. Second arc plate; 64. Paddle; 65. Torque spring; 66. Groove; 67. Solenoid valve switch. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1

[0029] This embodiment proposes a cold bending fixture for spiral rail spikes, such as... Figure 1As shown, the device includes a worktable 1, a slider 3 slidably connected to the top of the worktable 1, a cold bending die 4 clamped to the top of the worktable 1, an axial adjustment component 5 provided on the side of the slider 3, a guide groove 2 opened on the top of the worktable 1, the cold bending die 4 located on the top of the worktable 1 and close to the end of the guide groove 2, two guide grooves 2 are provided and symmetrically arranged on the top of the worktable 1, the slider 3 slides along the guide groove 2, and a clamping control component 6 is provided on the side of the axial adjustment component 5.

[0030] The spiral rail spike steel column is clamped by the clamping control component 6, and the slider 3 then drives the clamping control component 6 to move, so that the spiral rail spike steel column comes into contact with the cold bending die 4 for cold bending.

[0031] like Figures 2-4 As shown, the clamping control assembly 6 includes a first arc plate 61, a second hydraulic telescopic rod 62, a second arc plate 63, a lever 64, and a solenoid valve switch 67. The first arc plate 61 slides on the side of the axial adjustment assembly 5. The two ends of the second hydraulic telescopic rod 62 are fixedly connected to the first arc plate 61 and the axial adjustment assembly 5, respectively. The second arc plate 63 is fixedly installed at the end of the first arc plate 61. The lever 64 is rotatably connected to the inner arc surface of the second arc plate 63 near the end. The side of the lever 64 contacts the spiral rail spike steel column. The inner arc surfaces of multiple second hydraulic telescopic rods 62 clamp the spiral rail spike steel column. The solenoid valve switch 67 is fixedly installed on the inner arc surface of the second arc plate 63 and located on the rotation path of the lever 64. Multiple first arc plates 61 are provided, and the side of the axial adjustment assembly 5 is distributed in a ring at equal angles. The solenoid valve switch 67 is connected to the second hydraulic telescopic rod 62 through a solenoid hydraulic valve.

[0032] The extension of the second hydraulic telescopic rod 62 causes the first arc plate 61 and the second arc plate 63 to move. The second arc plate 63 moves to clamp the spiral rail spike steel column. Initially, the lever 64 is in an inclined state. After the spiral rail spike is inserted, as the second arc plate 63 moves, the lever 64 is gradually squeezed by the spiral rail spike and rotates. The rotating lever 64 presses down the solenoid valve switch 67, thereby blocking the flow of hydraulic pressure into the second hydraulic telescopic rod 62 by the solenoid hydraulic valve. This ensures that the clamping opening size of the multiple second arc plates 63 matches the diameter of the spiral rail spike steel column, avoiding loosening caused by mismatch. It eliminates the need to measure the diameter of the spiral rail spike steel column and adjust the clamping opening size, thus improving cold bending efficiency.

[0033] The inner arc surface of the second arc plate 63 has a groove 66 that completely accommodates the lever 64, so as to prevent the lever 64 from pressing against the second arc plate 63 and causing indentations on the spiral spike when the second arc plate 63 clamps the spiral spike. The solenoid valve switch 67 is fixedly installed in the groove 66.

[0034] A torque spring 65 is elastically connected at the rotational connection between the paddle 64 and the second arc plate 63. The inner diameter of the inner arc surface of the first arc plate 61 is larger than the inner diameter of the second arc plate 63. The torque spring 65 is used to reset the rotation of the paddle 64.

[0035] In this embodiment, as the second arc plate 63 moves, the paddle 64 is gradually squeezed and rotated by the spiral spike, so that the paddle 64 rotates and presses down the solenoid valve switch 67, thereby stopping the flow of hydraulic pressure into the second hydraulic telescopic rod 62, thus fixing the position of the first arc plate 61 and the second arc plate 63, so that the multiple second arc plates 63 stably clamp the spiral spike, eliminating the need to measure the diameter of the spiral spike steel column and adjust the size of the clamping opening, thereby improving the cold bending efficiency.

[0036] Example 2

[0037] Based on Example 1, this example proposes a cold bending fixture for spiral rail spikes, such as... Figure 1 and Figure 2 As shown, the axial adjustment assembly 5 includes a first hydraulic telescopic rod 51 and a docking plate 52. The first hydraulic telescopic rod 51 is fixedly installed inside the slider 3, and the docking plate 52 is fixedly installed at the end of the first hydraulic telescopic rod 51. The docking plate 52 is extended by extending the first hydraulic telescopic rod 51.

[0038] The docking plate 52 has a groove on the side facing the first arc plate 61, and the second hydraulic telescopic rod 62 is fixedly installed in the groove. The first arc plate 61 slides along the groove. Changing the position of the docking plate 52 changes the position of the first arc plate 61 and the second arc plate 63, thereby adjusting the position of the first arc plate 61 and the second arc plate 63 according to the length of the spiral spike.

[0039] In this embodiment, the first hydraulic telescopic rod 51 extends, thereby reducing the distance between the two mating plates 52, so that the first arc plate 61 and the second arc plate 63 move along the axis, thereby increasing the area of ​​clamping the spiral rail spike steel column and improving the clamping stability.

[0040] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A cold bending fixture for spiral rail spikes, characterized in that, include: A workbench (1) is provided with a slider (3) slidably connected to the top of the workbench (1), a cold bending mold (4) is snapped into the top of the workbench (1), and an axial adjustment component (5) is provided on the side of the slider (3). The clamping control assembly (6) includes a first arc plate (61), a second hydraulic telescopic rod (62), a second arc plate (63), a lever (64), and a solenoid valve switch (67). The first arc plate (61) slides on the side of the axial adjustment assembly (5). The two ends of the second hydraulic telescopic rod (62) are fixedly connected to the first arc plate (61) and the axial adjustment assembly (5), respectively. The second arc plate (63) is fixedly installed at the end of the first arc plate (61). The lever (64) is rotatably connected to the inner arc surface of the second arc plate (63) near the end. The solenoid valve switch (67) is fixedly installed on the inner arc surface of the second arc plate (63) and located on the rotation path of the lever (64). The solenoid valve switch (67) is connected to the second hydraulic telescopic rod (62) through the solenoid hydraulic valve. Multiple first arc plates (61) are provided, and the sides of the axial adjustment assembly (5) are distributed in a ring at equal angles.

2. The cold bending fixture for spiral rail spikes according to claim 1, characterized in that: The side of the lever (64) contacts the spiral rail spike steel column, and the inner arc surface of the multiple second hydraulic telescopic rods (62) clamps the spiral rail spike steel column. Initially, the lever (64) is in an inclined state.

3. The cold bending fixture for spiral rail spikes according to claim 1, characterized in that: The inner arc surface of the second arc plate (63) is provided with a groove (66), the groove (66) completely accommodates the lever (64), and the solenoid valve switch (67) is fixedly installed in the groove (66).

4. The cold bending fixture for spiral rail spikes according to claim 1, characterized in that: A torque spring (65) is elastically connected at the rotational connection between the paddle (64) and the second arc plate (63), and the inner arc diameter of the inner arc surface of the first arc plate (61) is larger than the inner arc diameter of the second arc plate (63).

5. The cold bending fixture for spiral rail spikes according to claim 1, characterized in that: The axial adjustment assembly (5) includes a first hydraulic telescopic rod (51) and a docking plate (52). The first hydraulic telescopic rod (51) is fixedly installed inside the slider (3), and the docking plate (52) is fixedly installed at the end of the first hydraulic telescopic rod (51).

6. The cold bending fixture for spiral rail spikes according to claim 5, characterized in that: The docking plate (52) has a groove on the side facing the first arc plate (61), the second hydraulic telescopic rod (62) is fixedly installed in the groove, and the first arc plate (61) slides along the groove.

7. The cold bending fixture for spiral rail spikes according to claim 1, characterized in that: The top of the workbench (1) is provided with a guide groove (2). The cold bending mold (4) is located at the top of the workbench (1) and close to the end of the guide groove (2). There are two guide grooves (2) and they are symmetrically arranged on the top of the workbench (1). The slider (3) slides along the guide groove (2).

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