A crimping tube pressing unit suitable for processing overhead wire hanging strings

Abstract

The present invention discloses a crimping tube pressing unit suitable for processing contact network hanging strings, which belongs to the technical field of contact network hanging string processing, and includes a servo motor, a reducer, a coupling and a double screw. By using the corresponding arrangement of external threads with opposite rotation directions at both ends of the double screw, and the corresponding arrangement of mounting blocks on the outer periphery of both ends of the double screw and the molds on the mounting blocks, the synchronous control of the two molds moving away from or close to each other can be effectively realized, and the rapid conversion of the two molds between the non-working state, the clamping state and the pressing state can be realized. The crimping tube pressing unit suitable for processing contact network hanging strings of the present invention has a simple structure and is easy to operate. It can effectively realize the automatic clamping and automatic pressing of the crimping tube, ensure the precision and accuracy of the clamping and pressing of the crimping tube, reduce the workload of manual operation in the process of processing contact network hanging strings, ensure the efficiency of matching and pressing the crimping tube with the stranded wire, reduce the cost of hanging string processing, and has good application prospects and promotion value.

Description

Technical Field

[0001] The invention belongs to the technical field of overhead wire hanging string processing, and in particular relates to a crimping tube pressing unit suitable for overhead wire hanging string processing. Background Art

[0002] With the rapid development of my country's railway construction, new requirements have been put forward for the process quality standards of relevant components in the railway industry, and the requirements for the construction and maintenance accuracy of the driving line are getting higher and higher. In the railway driving line, the overhead contact network is an important part to ensure the normal operation of the railway. It is connected to the electric railway power supply line and is responsible for supplying power to the entire electric locomotive traction system and train ancillary equipment.

[0003] In the contact network system of the train, the suspension string is an indispensable structure, which is mainly used to stably suspend the contact line under the load-bearing cable, ensure the stability and safety of the contact line setting, and ensure that the contact line can be reliably matched with the pantograph on the top of the train.

[0004] Since the contact network droppers have high requirements on structural accuracy when used, and the forms of the droppers are different in different application scenarios, the processing of the contact network droppers is often carried out manually, or the droppers are prefabricated and produced by manual pre-assembly and semi-automated assembly line operations. This results in low production efficiency and poor consistency of the droppers, and a high scrap rate, which in turn affects the application cost of the contact network droppers and cannot fully meet the needs of the rapid development of high-speed railways. Summary of the invention

[0005] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides a crimping tube pressing unit suitable for contact network suspension string processing, which can effectively realize the reliable pressing of the crimping tube in the suspension string, ensure the reliability and stability of the matching between the stranded wire and the crimping tube, reduce the manual labor in the whole process, and realize the automated pressing processing of the crimping tube.

[0006] To achieve the above-mentioned purpose, the present invention provides a crimping tube pressing unit suitable for processing catenary suspension strings, characterized in that it includes a servo motor, a double screw rod and a slide rail;

[0007] The servo motor is matched and connected to one end of the double screw rod through a coupling, and is used to drive the double screw rod to rotate forward or reverse; the other end of the double screw rod is rotatably matched on the bracket;

[0008] The axial ends of the double-screw rod are respectively provided with external threads with opposite rotation directions, and the outer circumferences of the two ends of the double-screw rod are respectively sleeved with mounting blocks; the two mounting blocks are respectively matched with the double-screw rod by threads to form two spiral screw rod pairs;

[0009] The axis of the slide rail is parallel to the axis of the double screw rod, and the slide rail is provided with sliders corresponding to the two mounting blocks, and the mounting blocks are installed on the corresponding sliders; at the same time, molds are respectively provided on the opposite end faces of the two mounting blocks, which are used to realize the clamping or pressing of the crimping tube after the two molds are matched.

[0010] As a further improvement of the present invention, a reducer is further provided between the servo motor and the coupling for realizing the control of the rotation speed of the double screw.

[0011] As a further improvement of the present invention, the external threads on the outer periphery of the double screw rod extend continuously from both ends to the middle of the double screw rod, that is, the rotation direction of the external threads is reversed in the middle of the double screw rod.

[0012] As a further improvement of the present invention, stoppers are provided at both ends of the slide rail corresponding to the slider, respectively, to prevent the slider from falling off the slide rail.

[0013] As a further improvement of the present invention, a retractable positioning pin is arranged between the two mounting blocks along the axial direction of the slide rail to indicate whether the two molds are in a clamping state or in a pressing completed state.

[0014] As a further improvement of the present invention, the end of the double-screw rod is matched and connected to the bracket through a ball bearing.

[0015] As a further improvement of the present invention, one of the two molds is in the shape of a vertically arranged plate, and the other is in the shape of a horizontally arranged plate, the former is referred to as the first mold, and the latter is referred to as the second mold;

[0016] The first mold has a first groove horizontally formed at the end facing the second mold; the second mold has a second groove horizontally formed at the end facing the first mold; the first groove and the second groove can be matched and combined into a receiving groove of the crimping tube after the two molds are close to each other, so as to realize the clamping of the crimping tube; and

[0017] The end of the second mold facing the first mold is vertically provided with a third groove, so that the end of the first mold can be embedded in the third groove to achieve the pressing of the crimping tube.

[0018] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0019] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0020] (1) The crimping tube pressing unit of the present invention is suitable for processing the overhead wire hanging string, and comprises a servo motor, a reducer, a coupling and a double screw. By using the corresponding arrangement of the external threads with opposite rotation directions at both ends of the double screw, and the corresponding arrangement of the mounting blocks on the outer periphery of both ends of the double screw and the molds on the mounting blocks, the synchronous control of the two molds moving away from or approaching each other is effectively realized, and the rapid conversion of the two molds between the non-working state, the clamping state and the pressing state is realized, which effectively improves the efficiency and accuracy of the crimping tube clamping and pressing, reduces the extra manual labor introduced by the crimping tube pressing process in the hanging string processing, reduces the labor intensity and labor cost of the hanging string processing, improves the automation degree of the hanging string assembly, and reduces the cost of the hanging string assembly;

[0021] (2) The crimping tube pressing unit suitable for processing the overhead wire hanging string of the present invention effectively ensures the accuracy of mold control through the corresponding arrangement of the slide rail and the slider, and the corresponding arrangement of the positioning pins between the two mounting blocks, further improves the accuracy of the crimping tube clamping and pressing, reduces the scrap rate of the hanging string processing, and indirectly reduces the processing cost of the hanging string;

[0022] (3) The crimping tube pressing unit suitable for contact network suspension string processing of the present invention has a simple structure and is easy to operate. It can effectively realize automatic clamping and automatic pressing of the crimping tube, ensure the precision and accuracy of the crimping tube clamping and pressing, reduce the workload of manual operation in the process of contact network suspension string processing, ensure the efficiency of matching and pressing the crimping tube with the stranded wire, reduce the cost of suspension string processing, and has good application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the crimping tube pressing unit in an embodiment of the present invention;

[0024] Figure 2 It is a partial structural schematic diagram of a crimping tube pressing unit in an embodiment of the present invention;

[0025] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0026] 200. Pressing tube pressing unit;

[0027] 201. servo motor, 202. reducer, 203. coupling, 204. double screw, 205. first mounting block, 206. second mounting block, 207. first mold, 208. second mold, 209. first slider, 210. second slider, 211. slide rail, 220. crimping tube, 230. bracket. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] Example:

[0034] See also Figure 1 , 2 The crimping tube pressing unit 200 suitable for contact network hanging string processing in the preferred embodiment of the present invention is arranged on the bracket 230, and is mainly used for pressing the crimping tube 220 and the stranded wire after matching. The whole process can be simplified as follows: one end of the stranded wire passes through the crimping tube 220 and is wrapped around the outer circumference of the heart-shaped ring, and then the end of the stranded wire turns 180° and passes through the crimping tube 220 again (that is, at this time, there are two stranded wires arranged side by side in the crimping tube 220, and a ring structure is formed on one side of the crimping tube 220); finally, the crimping tube 220 is pressed together to fix the two strands of stranded wire in the crimping tube 220.

[0035] Specifically, the crimping tube pressing unit in the preferred embodiment includes a servo motor 201, a reducer 202, and a coupling 203, which are matched and connected in sequence. The servo motor 201 generates a driving force which is transmitted to the reducer 202. The reducer 202 controls the magnitude of the driving force, and actually controls the speed of the screw in the preferred embodiment. The reducer 202 is correspondingly connected to the double-rotating screw 204 through the coupling 203, and then through the corresponding control of the servo motor 201, the double-rotating screw 204 can be realized to rotate forward or reverse at a certain speed.

[0036] Furthermore, the double screw rod 204 in the preferred embodiment is in the form of a long straight rod, one end of which is coaxially connected to the coupling 203, and the other end is matched with the bracket 230 by a ball bearing. The so-called double screw rod refers to that the two ends of the screw rod 204 are respectively provided with external threads with different rotation directions, that is, when the double screw rod 204 rotates, the threads at the two ends rotate in opposite directions. Preferably, the external threads at the outer periphery of the double screw rod 204 extend continuously from the two ends to the middle of the double screw rod 204, that is, the rotation direction of the external threads is reversed in the middle of the double screw rod 204.

[0037] Furthermore, a slide rail 211 is provided on the bracket 230 corresponding to the double screw rod 204, and its length direction is parallel to the axis of the double screw rod 204. At the same time, a first slider 209 and a second slider 210 are provided on the slide rail 211 for sliding matching, and the two sliders can slide back and forth on the slide rail 211. Preferably, stoppers are provided at both ends of the slide rail 211, respectively, to prevent the two sliders from falling off the slide rail 211.

[0038] Furthermore, mounting blocks are respectively provided on the two sliders, namely, a first mounting block 205 provided on the first slider 209 and a second mounting block 206 provided on the second slider 210, and threaded through holes are respectively provided in the middle of the two mounting blocks, which are matched with the external threads at both ends of the double screw rod 204 to form two screw rod pairs. Then, by rotating the double screw rod 204, the two sliders can move toward each other or away from each other on the slide rail 211.

[0039] Furthermore, molds are respectively arranged on the end faces of the two mounting blocks that are close to each other, that is, the first mold 207 arranged on the first mounting block 205 and the second mold 208 arranged on the second mounting block 206. The two molds can be moved closer or farther away by the rotation control of the double screw rod 204. At the same time, the crimping tube 220 of the suspension string can be accommodated between the two matching molds, and pressed against the outer periphery of the stranded wire after the two molds are further approached. In addition, the first mold 207 is preferably in the shape of a vertically arranged plate, and a first groove penetrating through the two side walls is horizontally opened in the middle of its end facing the second mold 208. The second mold 208 is preferably in the shape of a horizontally arranged plate, and a second groove is horizontally opened in the middle of its end face facing the first mold 207. The first groove and the second groove can be matched and combined into a receiving groove of the crimping tube 220 after the two molds are close to each other. At the same time, a groove is also vertically opened on the end face of the second mold 208 facing the first mold 207, so that the end of the first mold 207 can be embedded in the groove to achieve the pressing of the crimping tube 220.

[0040] Preferably, in order to achieve accurate matching (clamping or pressing) of the two molds, a retractable positioning pin structure is provided between the two opposite end faces of the two mounting blocks, which can be driven by a cylinder or a servo motor to work, and there are two working states, corresponding to the clamping and pressing processes of the molds. The positioning pin is arranged axially along the slide rail 211, and is preferably arranged on a mounting block, with its end pointing to the other mounting block. When the two molds need to clamp the compression tube 220, the positioning pin first extends to the length corresponding to the clamping of the two molds, and then the servo motor controls the double screw 204 to rotate. When the positioning pin abuts against another mounting block with its end, it indicates that the distance between the two molds at this time just meets the clamping of the compression tube 220, and the servo motor 201 is stopped at this time. When the compression tube 220 needs to be pressed, the positioning pin is first controlled to retract a certain distance, and then the servo motor 201 is controlled to work until the positioning pin abuts against the end face of the mounting block again, indicating that the pressing process has been completed, avoiding over-pressure deformation of the compression tube 220.

[0041] Through the above-mentioned settings, the setting of the crimping tube pressing unit 200 in the preferred embodiment of the present invention can be completed, and its working process is as follows: in the initial state of the crimping tube pressing unit 200, the two molds are respectively arranged at the two ends of the double screw rod 204; when it starts to work, the servo motor 201 is controlled to start working, and the driving force is transmitted to the double screw rod 204 through the reducer 202 and the coupling 203; thereafter, the double screw rod 204 rotates, so that the two sliders (209, 210) drive the two mounting blocks (205, 206) to move toward each other, that is, the two molds (207, 208) approach each other; then the two molds (207, 208) match each other, and a crimping tube 220 is clamped between the two molds. At this time, the servo motor 201 stops working, and the clamping of the crimping tube 220 is completed. Furthermore, the feeding of the stranded wire in the crimping tube 220 is controlled, and after the stranded wire has completed winding around the outer circumference of the heart-shaped ring and passed through the crimping tube 220 again with its end, and the stranded wire has completed the tensioning process, the servo motor 201 is continued to be controlled so that the two molds (207, 208) continue to approach each other, and the crimping tube 220 is pressed together, so as to achieve the corresponding matching between the crimping tube 220 at the end of the suspension string and the stranded wire.

[0042] The crimping tube pressing unit suitable for contact network suspension string processing in the present invention has a simple structure and is easy to operate. It can effectively realize automatic clamping and automatic pressing of the crimping tube, ensure the precision and accuracy of the clamping and pressing of the crimping tube, reduce the workload of manual operation in the process of contact network suspension string processing, ensure the efficiency of matching and pressing the crimping tube with the stranded wire, reduce the cost of suspension string processing, and has good application prospects and promotion value.

[0043] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crimping tube pressing unit suitable for processing overhead wire hanging strings, It is characterized in that Including servo motor, double screw rod and slide rail; The servo motor is matched and connected to one end of the double screw rod through a coupling, and is used to drive the double screw rod to rotate forward or reverse; the other end of the double screw rod is rotatably matched on the bracket; The axial ends of the double-screw rod are respectively provided with external threads with opposite rotation directions, and the outer circumferences of the two ends of the double-screw rod are respectively sleeved with mounting blocks; the two mounting blocks are respectively matched with the double-screw rod by threads to form two spiral screw rod pairs; The axis of the slide rail is parallel to the axis of the double screw rod, and the slide rail is provided with sliders corresponding to the two mounting blocks, and the mounting blocks are mounted on the corresponding sliders; at the same time, molds are respectively provided on the opposite end surfaces of the two mounting blocks, which are used to realize the clamping or pressing of the crimping tube after the two molds are matched; One of the two molds is in the shape of a vertically arranged plate, and the other is in the shape of a horizontally arranged plate, the former is referred to as the first mold, and the latter is referred to as the second mold; the first mold is horizontally provided with a first groove at the end facing the second mold; the second mold is horizontally provided with a second groove at the end facing the first mold; the first groove and the second groove can be matched and combined into a receiving groove for a crimping tube after the two molds are close to each other, so as to realize the clamping of the crimping tube; and the second mold is vertically provided with a third groove at the end facing the first mold, so that the end of the first mold can be embedded in the third groove to realize the pressing of the crimping tube; and A retractable locating pin is arranged along the axial direction of the slide rail between the two mounting blocks, and there are two working states, corresponding to the clamping and pressing process of the mold respectively; the locating pin is arranged along the axial direction of the slide rail, and is arranged on a mounting block, with the end pointing to the other mounting block; when the two molds need to clamp the compression tube, the locating pin first extends to the length corresponding to the clamping of the two molds, and then the servo motor controls the double screw to rotate, when the locating pin abuts against the other mounting block with the end, it indicates that the distance between the two molds at this time just meets the clamping of the compression tube; when the compression tube needs to be pressed, the locating pin is first controlled to retract a certain distance, and then the servo motor is controlled to work until the locating pin abuts against the end face of the mounting block again, indicating that the pressing process has been completed.

2. The crimping tube pressing unit suitable for processing overhead wire hanging strings according to claim 1, in, A reducer is also provided between the servo motor and the coupling for controlling the rotation speed of the double screw rod.

3. The crimping tube pressing unit suitable for processing overhead wire hanging strings according to claim 1, in, The external threads on the outer periphery of the double-screw rod extend continuously from both ends to the middle of the double-screw rod, that is, the rotation direction of the external threads is reversed in the middle of the double-screw rod.

4. The crimping tube pressing unit suitable for overhead wire hanging string processing according to any one of claims 1 to 3, in, Stoppers are provided at both ends of the slide rail corresponding to the sliders, respectively, to prevent the sliders from falling off the slide rails.

5. The crimping tube pressing unit suitable for processing overhead wire hanging strings according to any one of claims 1 to 3, in, The end of the double screw rod is matched and connected with the bracket through a ball bearing.

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