An electric heating device for locking a frame of an external locking device

Abstract

The utility model relates to an electric heating device of an outer locking device locking frame, characterized in that: it is tightly clamped on the upper end backrest of the outer locking device locking frame through a front fixed plate (4), a rear fixed plate (5) and a bolt nut and a flat gasket elastic gasket (3), wherein the relatively narrow front fixed plate (4) can be fixed on the upper part of the oval rail waist bolt hole of the locking frame, without affecting the normal installation of the rail waist bolt and the matched nut, gasket and elastic gasket; meanwhile, two round holes are designed in the middle of the outer locking device locking frame; the relatively wide rear fixed plate (5) is provided with symmetrical half-ellipse grooves on the plate surface for clamping the rail waist bolt, and the limiting of the rail waist bolt achieves the anti-vertical movement of the fixed plate (5), after the locking frame is installed on the steel rail, there is a gap between the rear surface of the upper end backrest of the locking frame and the surface of the steel rail. The utility model realizes the fixed installation of the electric heating element under the premise of adapting to the structure of the outer locking device locking frame and not affecting the turnout close adjustment function.

Description

Technical Field

[0001] This utility model relates to the technical field of railway turnout external locking devices, specifically an electric heating device for the locking frame of an external locking device, used to solve the problems of snow melting and antifreezing of the locking frame in low-temperature environments. Background Technology

[0002] Currently, the snow-melting heating device for the locking frame of the external locking device of domestic turnouts mainly adopts the method of fixing the electric heating element and attaching it tightly to the locking frame, and heating the locking frame by energizing the electric heating element. This type of heating device is simply referred to as an electric heating device.

[0003] In China, turnout external locking devices are divided into GW-type external locking devices and GW-SH-type external locking devices. The locking frame structures equipped with the two types of external locking devices have different external dimensions, and the existing structure of the electric heating device for the locking frame cannot be used for installation.

[0004] In the prior art, similar products of electric heating devices for locking frames are mainly used in the locking frames of GW-type external locking devices. The electric heating element is bent so that its shape can fit the outline of the GW-type external locking device locking frame, and is fixed to the outer contour of the locking frame by a matching fixing device. Because the GW-type external locking device locking frame is rectangular in both the upper and lower halves, and only transitions through a bevel in the middle (e.g., Figure 1 As shown), most mainstream electric heating elements adopt a U-shaped structure and are installed in the upper or lower half of the locking frame (such as...). Figure 2 As shown, electric heating devices with electric heating elements installed in the lower half of the locking frame are usually complex and bulky, and there is a risk of interference with the track bed when used on site. Electric heating devices with electric heating elements installed in the upper half of the locking frame need to be fixed by the rail waist bolts of the locking frame itself, which may result in insufficient thread length of the rail waist bolts of the locking frame. Summary of the Invention

[0005] The purpose of this utility model is to provide an electric heating device and method suitable for the locking frame of an external locking device, so as to achieve the fixed installation of the electric heating element without affecting the turnout's close-fitting adjustment function, while adapting to the structure of the locking frame of the external locking device.

[0006] The technical solution of this utility model is as follows: This utility model relates to an electric heating device for the locking frame of an external locking device, characterized in that it includes: a bracket, a pad, a front fixing plate, a rear fixing plate, a pressure plate, and an electric heating element; the front fixing plate is relatively narrow and is fixed to the upper part of the elliptical rail bolt holes of the locking frame, with two round holes in the middle; the rear fixing plate is relatively wide and has symmetrical semi-elliptical grooves on its surface for holding the rail bolts; the bracket includes an upper groove and a pad, the upper groove and the pad having two round holes, which are fastened by a bolt and nut assembly; the bolt, nut, and flat washer / spring washer are used to fasten the front fixing plate and the rear fixing plate; the bracket is a U-shaped double-sided support structure, fixed to the lower seat of the locking frame, with grooves on the sides and top; the electric heating element is placed in the groove of the bracket; the pad is placed in the upper groove of the bracket and clamps the electric heating element with the bracket; the pressure plate is a U-shaped structure and is connected to the front fixing plate and the bracket by a bolt and nut assembly.

[0007] Both the front and rear fixing plates are U-shaped groove structures used to lock the left and right sides of the upper backrest of the locking frame.

[0008] The rear fixing plate includes a semi-elliptical groove, which is limited by rail bolts to prevent vertical movement.

[0009] The pressing plate is divided into a front part and a rear part. The front part is shorter and the rear part is taller. Both parts are provided with round holes and are connected to the front fixing plate and bracket by bolt and nut assembly.

[0010] The electric heating element is installed on the upper part of the locking frame and is fixed by the front fixing plate, the rear fixing plate and the bracket, so as to avoid occupying the working length of the rail bolts and achieve the overall structure is fastened.

[0011] The bracket has two round holes in the upper groove and pad. The pressure plate has a U-shaped structure, divided into a front and a rear. The front part is shorter and has two round holes, while the rear part is taller and also has two round holes. The two fixing holes in the middle of the front fixing plate are aligned with the two round holes in the rear of the pressure plate and then tightened by two sets of bolts, nuts and flat washers.

[0012] The advantages of this utility model are: This utility model adopts the scheme of installing the electric heating element on the upper half of the locking frame and using the rail bolts of the locking frame itself for fixing, but avoids the problem of insufficient thread length caused by occupying the working length of the rail bolts. This utility model also adopts a unique fixing plate design to avoid occupying the working length of the rail bolts and ensure that the locking frame is firmly fixed.

[0013] This utility model applies to the special structure of the GW-SH type locking frame; it has a simple and lightweight structure, is easy to install, and the electric heating element is installed in the upper part of the locking frame to avoid interference with the track bed and improve safety.

[0014] The present invention will be further described below with reference to the accompanying drawings of the embodiments. Attached Figure Description Figure 1 This is a schematic diagram of the locking frame of the GW-type external locking device; Figure 2 A schematic diagram of the installation of an existing electric heating device;

[0015] Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the front fixing plate and the rear fixing plate of this utility model; Figure 5 This is a schematic diagram showing the installation of the bracket and electric heating element of this utility model; Figure 6 This is a schematic diagram of the tablet compression structure of this utility model; Figure 7 This is a schematic diagram showing the completed installation of this utility model.

[0016] In the diagram: 1. Bracket; 2. Pad; 3. Bolts, nuts, flat washers, and spring washers; 4. Front fixing plate; 5. Rear fixing plate; 6. Pressure plate; 7. Electric heating element. Detailed Implementation

[0017] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the specific implementation methods, structural features and effects of this utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0018] like Figure 3 , Figure 4 , Figure 5 As shown: This utility model relates to an electric heating device for the locking frame of an external locking device, characterized in that it includes: a bracket 1, a pad 2, a front fixing plate 4, a rear fixing plate 5, a pressure plate 6, and an electric heating element 7; the front fixing plate 4 is relatively narrow and is fixed to the upper part of the elliptical rail bolt holes of the locking frame, with two round holes in the middle; the rear fixing plate 5 is relatively wide and has symmetrical semi-elliptical grooves on its surface for holding the rail bolts; the bracket 1 includes an upper groove and a pad 2, the upper groove and the pad 2 having two round holes, which are fastened by a bolt and nut assembly; the bolt, nut, and flat washer 3 are used to fasten the front fixing plate and the rear fixing plate; the bracket 1 is a U-shaped double-sided support structure, fixed to the lower seat of the locking frame, with grooves on the sides and the upper part; the electric heating element 7 is placed in the groove of the bracket 1; the pad 2 is placed in the upper groove of the bracket 1, clamping the electric heating element 7 with the bracket 1; the pressure plate 6 is a U-shaped structure, connected to the front fixing plate and the bracket 1 by a bolt and nut assembly.

[0019] like Figure 4As shown, both the front fixing plate 4 and the rear fixing plate 5 are U-shaped groove structures used to lock the left and right sides of the upper backrest of the locking frame. The rear fixing plate 5 includes a semi-elliptical groove, which is limited by the rail waist bolt to prevent vertical movement.

[0020] like Figure 5 As shown in the embodiment of this utility model, the electric heating element 7 is installed on the upper half of the locking frame and fixed by the front fixing plate 4, the rear fixing plate 5 and the bracket 1, so as to avoid occupying the working length of the rail web bolt and realize the overall structure is fastened.

[0021] like Figure 6 As shown, the pressure plate 6 is divided into a front part and a rear part. The front part is shorter and the rear part is taller. Both parts are provided with round holes and are connected to the front fixing plate 4 and the bracket 1 by bolt and nut assembly.

[0022] Figure 7 This is a schematic diagram of the completed installation of this utility model. As can be seen from the figure, the key point of this utility model is that the front fixing plate 4, the rear fixing plate 5, the bolts, nuts, and flat washers 3 are tightly clamped to the upper back of the locking frame of the GW-SH type external locking device. Under the premise of restricting the movement of the device in three degrees of freedom, this avoids the problem of insufficient thread length caused by occupying the working length of the rail web bolt.

[0023] This utility model first uses a front fixing plate 4, a rear fixing plate 5, bolts, nuts, and flat washers 3 to clamp the upper back of the locking frame of the external locking device. The front fixing plate 4 is relatively narrow and can be fixed to the upper part of the elliptical rail web bolt hole of the locking frame without affecting the normal installation of the rail web bolt, matching nut, washer, and spring washer. At the same time, two round holes are designed in the middle. The rear fixing plate 5 is relatively wide and has symmetrical semi-elliptical grooves on its surface to hold the rail web bolt. This can prevent the fixing plate 5 from moving vertically by limiting the rail web bolt, and also avoid the problem of insufficient thread length caused by occupying the working length of the rail web bolt (after the locking frame is installed on the rail, there is a gap between the upper back surface of the locking frame and the surface of the rail). Both the front fixing plate 4 and the rear fixing plate 5 are designed with a U-shaped groove structure to lock the left and right sides of the upper backrest of the locking frame. Each plate also has two round holes on each side, which are fastened with two sets of bolts, nuts and flat washers 3. The U-shaped structure of the front fixing plate 4 and the rear fixing plate 5 is not limited to a bending angle of only 90° between the side edges and the bottom edge. If there is a structure with a bending angle greater than 90°, the electric heating device can also be installed.

[0024] Furthermore, in this utility model, the bracket 1 adopts a U-shaped double-sided support structure and is fixed on the seat at the lower end of the locking frame. Grooves are designed on both sides and the upper part of the bracket 1. In this utility model, the electric heating element 7 is placed in the three-sided grooves of the bracket 1, and the pad 2 is placed in the upper groove, forming a structure in which the bracket 1 and the pad 2 clamp the electric heating element 7. In this utility model, the upper groove of the bracket 1 and the pad 2 are designed with two round holes. The pressure plate 6 in this utility model adopts a U-shaped structure, divided into a front part and a rear part. The front part is shorter and designed with two round holes, and the rear part is higher and also designed with two round holes. In this utility model, the two fixing holes in the middle of the front fixing plate 4 are aligned with the two round holes in the rear part of the pressure plate and then tightened by two sets of bolts, nuts and flat washers 3.

[0025] Finally, after aligning the two round holes of the bracket 1, pad 5 and pressure plate 6, this utility model is fastened with two sets of bolts, nuts and flat washers 3 to achieve the installation and fixation of the electric heating element 7.

[0026] The GW-SH type external locking device has a chair structure with a backrest at the top and a seat at the bottom when viewed from the side. There are two parallel rail bolt holes at the backrest. The two rail bolt holes are elliptical in shape. Each elliptical hole is fitted with a rail bolt, a matching nut, a washer, and a spring washer for fixing to the rail.

[0027] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric heating device for the locking frame of an external locking device, characterized in that, include: The bracket (1), pad (2), front fixing plate (4), rear fixing plate (5), pressure plate (6), and electric heating element (7) are all components. The front fixing plate (4) is narrow and is fixed to the upper part of the elliptical rail web bolt hole of the locking frame, with two round holes in the middle. The rear fixing plate (5) is wider and has symmetrical semi-elliptical grooves on its surface for holding the rail web bolts. The bracket (1) includes an upper groove and a pad (2), with two round holes in the upper groove and the pad (2) for bolting. The mother assembly is fastened; bolts, nuts and flat washers (3) are used to fasten the front fixing plate and the rear fixing plate; the bracket (1) is a U-shaped double-sided support structure, fixed on the seat at the lower end of the locking frame, with grooves on the side and the top; the electric heating element (7) is placed in the groove of the bracket (1); the pad (2) is placed in the upper groove of the bracket (1) and clamps the electric heating element (7) with the bracket (1); the pressure plate (6) is a U-shaped structure and is connected to the front fixing plate and the bracket (1) through the bolt and nut assembly.

2. The electric heating device for the locking frame of the external locking device according to claim 1, characterized in that: Both the front fixing plate (4) and the rear fixing plate (5) are U-shaped groove structures used to lock the left and right sides of the upper backrest of the locking frame.

3. The electric heating device for the locking frame of the external locking device according to claim 1, characterized in that: The rear fixing plate (5) includes a semi-elliptical groove, which is limited by the rail waist bolt to prevent vertical movement.

4. The electric heating device for the locking frame of the external locking device according to claim 1, characterized in that: The pressing plate (6) is divided into a front part and a rear part. The front part is shorter and the rear part is taller. Both parts are provided with round holes for connecting with the front fixing plate (4) and the bracket (1).

5. The electric heating device for the locking frame of the external locking device according to claim 1, characterized in that: The electric heating element (7) is installed on the upper half of the locking frame and fixed by the front fixing plate (4), the rear fixing plate (5) and the bracket (1) to avoid occupying the working length of the rail web bolt.

6. The electric heating device for the locking frame of the external locking device according to claim 1, characterized in that: The bracket (1) has two round holes in the upper groove and pad (2). The pressure plate (6) adopts a U-shaped structure, which is divided into a front part and a rear part. The front part is shorter and has two round holes, while the rear part is higher and also has two round holes. The two fixing holes in the middle of the front fixing plate (4) are aligned with the two round holes in the rear part of the pressure plate by two sets of bolts, nuts and flat washers (3) and then tightened.

Images