Lifter for grounding rod of overhead line system of electrified railway

Abstract

The utility model discloses an electrified railway catenary line grounding rod lifter, which comprises a fixing mechanism and a lifting mechanism, the fixing mechanism is connected with the lifting mechanism, the lifting mechanism comprises a screw rod seat and a sleeve, the screw rod seat is fixedly connected with a connecting plate, the outer side of the sleeve is fixedly connected with a fixing plate, and the fixing plate is fixedly connected with the connecting plate. And the fixing plate is rotationally connected with the connecting plate through the positioning shaft. According to the utility model, the contact net supporting columns are used as mechanism supporting points, rigid connection is adopted, and the stable working platform is built through the fixing mechanism, so that the condition that the foundation is unstable by manual lifting is avoided; by changing the position of a hanging ground wire, a contact net line is changed into a contact net supporting column and an inclined cantilever, the geometric dimension is relatively enlarged, the operability is effectively improved, and the inclined cantilever serves as a contact net positioning component and is a metal component. And a triangular structure formed by the support arm, the straight cantilever and the contact net support column can bear the weight of a grounding rod and a grounding wire.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway maintenance equipment, in particular to a lifter for an electrified railway contact network grounding rod. Background Art

[0002] With the rapid development of my country's railway industry, the total mileage of electrified railways has reached 100,000 kilometers, accounting for 71.9% of the country's total railway mileage. When a 25kV catenary fault occurs, the catenary must be de-energized and reliably grounded before further operations can begin. This requires manually lifting a grounding pole to the catenary line, touching it, and then attaching it. This operation is firstly, due to the small geometric dimensions and high height of the catenary line, the probability of successful operation is low. Secondly, in double-track or multi-track sections, the center-to-center distance between the two lines is less than the length of the grounding pole. If the grounding pole is not properly lifted, there is a high risk of the grounding pole intruding into the adjacent line limit. Thirdly, the operator must stand in the center of the line during the lifting process. If the operator lacks strength, they may lose their balance and step on the rails during the lifting process. Fourthly, operation is difficult in severe convective weather or during nighttime when visibility is poor. To address this issue, we propose a grounding pole lifter for electrified railway catenary lines. Utility Model Content

[0003] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0004] An electrified railway contact network grounding rod lifter includes a fixing mechanism and a lifting mechanism, wherein the fixing mechanism is connected to the lifting mechanism, and the lifting mechanism includes a screw seat and a sleeve, wherein the screw seat is fixedly connected to a connecting plate, and the outer side of the sleeve is fixedly connected to a fixing plate, and the fixing plate is rotatably connected to the connecting plate via a positioning shaft, and the screw seat is equipped with a pushing assembly for driving the fixing plate to rotate with the positioning shaft as the axis.

[0005] As a preferred embodiment of the above technical solution, the pushing component includes a wire sleeve, the outer wall of the wire sleeve is fixedly connected to a guide slider, the fixed plate is provided with a guide slot, and the guide slider passes through the guide slot.

[0006] As a preferred embodiment of the above technical solution, the thread sleeve is threadedly connected to a screw rod, the screw rod is rotatably connected to the screw rod seat, and one end of the screw rod passes through the screw rod seat and is fixedly connected to a handle, both sides of the thread sleeve are fixedly connected to limit plates, and the two limit plates are respectively located on both sides of the connecting plate.

[0007] As a preferred embodiment of the above technical solution, the fixing mechanism includes a first clamp and a second clamp, both of which are connected with bolts, the tail ends of the bolts are threadedly connected with nuts, and the second clamp is hinged to the screw seat.

[0008] The beneficial effects of the utility model are:

[0009] 1. This utility model uses the contact network pillar as the support point of the mechanism, adopts a rigid connection, and builds a stable working platform through the fixed mechanism to avoid the situation of unstable artificial lifting foundation;

[0010] 2. The utility model changes the location of the hanging ground wire from the contact network line to the contact network pillar and the oblique arm, which relatively expands the geometric size and effectively improves the operability. The oblique arm is a metal component as the contact network positioning component. In extreme situations such as the contact network line breaking, the triangular structure formed by the straight arm and the contact network pillar can ensure that it can bear the weight of the grounding rod and the grounding wire.

[0011] 3. The utility model changes the manual lifting action of the grounding rod into a mechanical cooperation operation, and uses the cooperation of the screw rod and the silk sleeve to change the manual lifting action into a rotation action, and provides an angle self-locking function with the help of the cooperation of the screw rod and the silk sleeve to ensure stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure shows a schematic structural diagram of an electrified railway contact network grounding pole lifter in an embodiment;

[0013] Figure 2 Shown is a schematic structural diagram of the fixing mechanism and the lifting mechanism in the embodiment;

[0014] Figure 3 Shown is a schematic structural diagram of the lifting mechanism in the embodiment;

[0015] Figure 4 Shown is a schematic diagram of the motion structure of the lifting mechanism in the embodiment.

[0016] Description of reference numerals:

[0017] 1. Contact network pillar; 2. Straight arm; 3. Oblique arm; 4. Grounding rod; 5. Fixing mechanism; 51. Clamping plate 1; 52. Clamping plate 2; 53. Bolt; 54. Nut; 6. Lifting mechanism; 61. Screw seat; 62. Connecting plate; 63. Screw; 64. Handle; 65. Threaded sleeve; 66. Limiting plate; 67. Sleeve; 68. Fixing plate; 69. Positioning shaft; 610. Guide slider. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] Example

[0020] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the electrified railway contact network grounding pole lifter includes a fixing mechanism 5 and a lifting mechanism 6. The fixing mechanism 5 is connected to the lifting mechanism 6. The lifting mechanism 6 includes a screw seat 61 and a sleeve 67. The screw seat 61 is fixedly connected to a connecting plate 62. The outer side of the sleeve 67 is fixedly connected to a fixing plate 68. The fixing plate 68 is rotatably connected to the connecting plate 62 through a positioning shaft 69. The screw seat 61 is equipped with a pushing component for driving the fixing plate 68 to rotate with the positioning shaft 69 as the axis.

[0021] It should be noted that the fixing mechanism 5 is fixed on the contact network pillar 1, and the specific position can be flexibly adjusted according to actual conditions. At the same time, the straight arm 2 and the oblique arm 3 fixed on the contact network pillar 1 form a triangular structure. The oblique arm 3 serves as a contact network positioning component and is a metal component. The grounding rod 4 is inserted into the sleeve 67 and overlapped on the oblique arm 3 through a pushing assembly.

[0022] like Figure 2 、 Figure 3 and Figure 4 As shown, the pushing assembly includes a wire sleeve 65, the outer wall of the wire sleeve 65 is fixedly connected to a guide slider 610, the fixing plate 68 is provided with a guide slot, and the guide slider 610 passes through the guide slot.

[0023] Specifically, during the movement of the wire sleeve 65, the guide slider 610 will push the fixed plate 68 and the sleeve 67 to rotate around the positioning shaft 69 as the axis. Since the guide groove provided on the fixed plate 68 slides with the guide slider 610, the fixed plate 68 can rotate smoothly.

[0024] like Figure 2 、 Figure 3 and Figure 4 As shown, the wire sleeve 65 is threadedly connected to the screw rod 63, the screw rod 63 is rotatably connected to the screw rod seat 61, and one end thereof passes through the screw rod seat 61 and is fixedly connected to the handle 64, and both sides of the wire sleeve 65 are fixedly connected to the limit plates 66, and the two limit plates 66 are respectively located on both sides of the connecting plate 62.

[0025] Specifically, shaking the handle 64 can drive the screw rod 63 to rotate on the screw rod seat 61. Since the limit plates 66 fixed on both sides of the wire sleeve 65 are also respectively arranged on both sides of the connecting plate 62, the wire sleeve 65 threadedly connected to the screw rod 63 will not rotate with the screw rod 63, but will move linearly along the side of the connecting plate 62.

[0026] like Figure 2 As shown, the fixing mechanism 5 includes a first clamping plate 51 and a second clamping plate 52 , both of which are connected with bolts 53 , the tail ends of the bolts 53 are threadedly connected with nuts 54 , and the second clamping plate 52 is hinged to the screw seat 61 .

[0027] Specifically, by means of the threaded cooperation between the bolt 53 and the nut 54 , the distance between the first clamping plate 51 and the second clamping plate 52 can be adjusted at any time, thereby being able to adjust the specific height of the lifting mechanism 6 on the contact network support 1 .

[0028] Working principle: The lifting mechanism 6 is fixed to the contact network pillar 1 with the help of the fixing mechanism 5 to form a stable working platform. The working platform is firmly installed on the contact network pillar 1 with the help of the clamping plate 1 51, the clamping plate 2 52, the bolt 53 and the nut 54. The specific height can be adjusted between 0.7 meters and 1 meter according to the height of the operator.

[0029] Rotate the handle 64 to rotate the screw rod 63, move the screw sleeve 65 to the rear end point (initial position), and make the sleeve 67 horizontal, which is convenient for inserting the ground rod 4;

[0030] After the grounding rod 4 is firmly fixed, the handle 64 is rotated to rotate the screw rod 63, and the screw sleeve 65 is moved to the front end point (lifting position), and the grounding rod 4 is lifted vertically to the ground;

[0031] Push the connecting plate 62 to rotate horizontally along the end pin of the screw seat 61, so that the grounding rod 4 hook touches the oblique arm 3;

[0032] After confirming that there is no electricity, rotate the handle 64 in the opposite direction, the hook of the grounding rod 4 is lowered to a certain angle, and the oblique arm 3 is clamped into the hook of the grounding rod 4;

[0033] The removal process is the reverse of the above steps.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. An electrified railway contact line grounding rod lifter, comprising a fixing mechanism (5) and a lifting mechanism (6), characterized in that: The fixing mechanism (5) is connected to the lifting mechanism (6), and the lifting mechanism (6) includes a screw seat (61) and a sleeve (67). The screw seat (61) is fixedly connected to a connecting plate (62). The outer side of the sleeve (67) is fixedly connected to a fixing plate (68). The fixing plate (68) is rotatably connected to the connecting plate (62) via a positioning shaft (69). The screw seat (61) is equipped with a pushing assembly for driving the fixing plate (68) to rotate with the positioning shaft (69) as the axis.

2. The electrified railway contact network grounding rod lifter according to claim 1, characterized in that: The pushing component comprises a wire sleeve (65), the outer wall of the wire sleeve (65) is fixedly connected with a guide slide block (610), the fixed plate (68) is provided with a guide slot, and the guide slide block (610) passes through the guide slot.

3. The electrified railway contact network grounding rod lifter according to claim 2, characterized in that: The threaded sleeve (65) is threadedly connected to a screw rod (63), the screw rod (63) is rotatably connected to the screw rod seat (61), and one end thereof passes through the screw rod seat (61) and is fixedly connected to a handle (64), both sides of the threaded sleeve (65) are fixedly connected to limit plates (66), and the two limit plates (66) are respectively located on both sides of the connecting plate (62).

4. The electrified railway contact network grounding rod lifter according to claim 1, characterized in that: The fixing mechanism (5) comprises a first clamping plate (51) and a second clamping plate (52), wherein the first clamping plate (51) and the second clamping plate (52) are both connected with bolts (53), the tail ends of the bolts (53) are threadedly connected with nuts (54), and the second clamping plate (52) is hinged to the screw seat (61).

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