A contact rail drilling auxiliary die with a limiting component

Abstract

The utility model belongs to the field of auxiliary molds, and specifically is a contact rail drilling auxiliary mold with a limiting component, comprising an auxiliary mold body, a limiting component, and a subway contact rail; the limiting component is installed with a servo motor, a first transmission gear is fixedly installed on one side of the servo motor, and a transmission belt is connected to the first transmission gear around the periphery; the transmission shaft is driven by the second transmission gear to perform synchronous rotational movement, and the threaded shaft cooperates with a matching threaded groove provided on a movable block when performing rotational movement, so that the movable block is horizontally moved to one side, and a template fixed at the bottom of the movable block is synchronously moved, and when the gap between the two templates is reduced, the two templates are clamped and fixed to one side of the subway contact rail, so that the auxiliary mold body is limited and fixed on the subway contact rail, so as to solve the problem of deviation of the drilling position when the mold is active, and improve the adaptability of the drilling operation.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary molds, in particular to a contact rail drilling auxiliary mold with a limiting component. Background Art

[0002] Contact rails are devices that transmit electrical energy to electric traction vehicles in subways and urban rail transit systems. In the first half of the 20th century, only steel contact rails were used. After the mid-20th century, the material of steel contact rails was improved to form the so-called "iron contact rails". In fact, the material has been changed, impurities have been reduced, and elements that improve conductivity have been added, and the unit resistance has been reduced. The contact rails used in Beijing Subway Line 1, Beijing Subway Line 2, Beijing Subway Fuba Line, etc. belong to this category.

[0003] Chinese patent number CN201920874866.3 discloses a contact rail drilling auxiliary mold, including a positioning plate, the lower end of the positioning plate can abut against the upper surface of the contact rail and form a positioning, the positioning plate is provided with a card slot, the card slot can accommodate and fix the contact rail drilling machine, and the positioning plate is provided with clamps on both sides, the clamps can clamp the side of the contact rail beam, so that the drilling auxiliary mold body is fixed to the contact rail. In one embodiment, the clamp includes a first clamp and a second clamp, which are respectively arranged on both sides of the positioning plate, the first clamp has an end extending toward the contact rail, the end forms a hook-shaped protrusion, and the hook-shaped protrusion can abut against the bottom surface of the contact rail beam.

[0004] From the above, it can be seen that the contact rail drilling auxiliary mold provided by the above utility model relies on the positioning plate and the clamp to form a positioning with the contact rail, which is simple to operate and has a fast positioning speed. However, this case also has the following shortcomings: after the existing auxiliary mold body is positioned, the drill bit of the drilling rig will contact the auxiliary mold body during rotational drilling, causing the mold to move and deviate. As a result, when the mold moves, the drilling position deviates, reducing the accuracy of the contact rail drilling position.

[0005] Therefore, in order to solve the above problems, a contact rail drilling auxiliary mold with a limiting component is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the prior art and the problem of deviation of the drilling position when the mold is active, the utility model provides a contact rail drilling auxiliary mold with a limiting component.

[0007] The technical solution adopted by the utility model to solve its technical problem is: the utility model describes a contact rail drilling auxiliary mold with a limiting component, comprising an auxiliary mold body, a limiting component, and a subway contact rail; the limiting component is installed with a servo motor, a first transmission gear is fixedly installed on one side of the servo motor, a transmission belt is connected to the first transmission gear around the periphery, the other side of the transmission belt is connected to the second transmission gear, a transmission shaft passes through and is fixedly connected to the back side of the second transmission gear, and the other end of the transmission shaft is fixedly connected to a threaded shaft.

[0008] Preferably, the auxiliary mold body includes two templates, one side of the two templates is respectively provided with a plurality of positioning holes, one side of the two templates is respectively provided with a plurality of slots, and an underground contact rail is movably connected between the two templates.

[0009] Preferably, a mounting plate is fixedly installed at the bottom of the servo motor, two support blocks are fixedly connected to the top of the mounting plate, a limiting plate is fixedly connected between the two support blocks, and the back side of the limiting plate is fixedly installed on one side of the servo motor.

[0010] Preferably, a bearing block is fixedly connected to the bottom of the mounting plate, a transmission shaft passes through and is movably mounted on one side of the bearing block, and two limiting rods are fixedly connected to one side of the back side of the bearing block.

[0011] Preferably, a fixing block is passed through and movably installed at one end of the transmission shaft, two holes are opened on one side of the fixing block and limit rods are fixedly installed in the holes respectively, and a mounting plate is fixedly connected to the top of the fixing block.

[0012] Preferably, a movable block is passed through and movably connected to one side of the limiting rod, a threaded groove is opened on one side of the movable block, a threaded shaft matching the threaded groove is movably installed on the inner wall of the threaded groove, a template is fixedly connected to the bottom of the movable block, and a fixed block is fixedly connected to the top of another template.

[0013] The utility model is beneficial in that:

[0014] The utility model adopts the structural design of the limit assembly, and drives the transmission shaft to perform synchronous rotational movement through the second transmission gear. When the threaded shaft performs rotational movement, it cooperates with the threaded groove provided on the movable block to realize the horizontal movement of the movable block to one side, and the template fixed at the bottom of the movable block performs synchronous movement. When the gap between the two templates is reduced, the two templates are clamped and fixed to one side of the contact rail under the subway, thereby realizing the function of limiting and fixing the auxiliary mold body on the contact rail under the subway, solving the problem of deviation of the drilling position when the mold is active, and improving the adaptability of the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 3 It is an exploded schematic diagram of the overall structure of the utility model;

[0019] Figure 4 This is an exploded schematic diagram of the limit assembly structure of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the auxiliary mold body of the utility model.

[0021] In the figure: 1. Auxiliary mold body; 2. Limiting assembly; 3. Underground contact rail; 11. Template; 12. Positioning hole; 13. Slot; 21. Servo motor; 22. First transmission gear; 23. Transmission belt; 24. Mounting plate; 25. Support block; 26. Limiting plate; 27. Second transmission gear; 28. Transmission shaft; 29. ​​Threaded shaft; 201. Bearing block; 202. Fixed block; 203. Limiting rod; 204. Movable block; 205. Threaded groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5As shown, a contact rail drilling auxiliary mold with a limiting assembly comprises an auxiliary mold body 1 and a limiting assembly 2; the limiting assembly 2 is installed with a servo motor 21, a first transmission gear 22 is fixedly installed on one side of the servo motor 21, a transmission belt 23 is transmission-connected around the first transmission gear 22, the other side of the transmission belt 23 is transmission-connected with a second transmission gear 27, a transmission shaft 28 is penetrated and fixedly connected on one side of the back side of the second transmission gear 27, and a threaded shaft 29 is fixedly connected to the other end of the transmission shaft 28;

[0024] During operation, power is provided by the servo motor 21. When the servo motor 21 is running, the first transmission gear 22 transmits the transmission belt 23, so that the transmission belt 23 transmits the rotational power to the second transmission gear 27, thereby facilitating the rotation of the transmission shaft 28 and the threaded shaft 29 to achieve overall limiting.

[0025] Furthermore, the auxiliary mold body 1 includes two templates 11, one side of the two templates 11 is respectively provided with a plurality of positioning holes 12, one side of the two templates 11 is respectively provided with a plurality of card slots 13, and a subway contact rail 3 is movably connected between the two templates 11;

[0026] During operation, the underground contact rail 3 of the subway is fixed through the gap between the two templates 11. When drilling operation is required, the position to be drilled is quickly located through the positioning hole 12 opened in the template 11, and the drill bit of the drilling rig is limited to ensure that the opened holes meet the quality standards.

[0027] Furthermore, a mounting plate 24 is fixedly installed at the bottom of the servo motor 21, two support blocks 25 are fixedly connected to the top of the mounting plate 24, a limit plate 26 is fixedly connected between the two support blocks 25, and a back side of the limit plate 26 is fixedly installed with one side of the servo motor 21;

[0028] During operation, the servo motor 21 is fixedly supported by the mounting plate 24, so that the servo motor 21 can perform stable transmission work. During transmission, in order to prevent the interaction force generated on the servo motor 21 from being too large and causing the servo motor 21 to move, the servo motor 21 is limited by the support block 25 and the limit plate 26, which is beneficial to increase the support points of the servo motor 21 to prevent it from being affected during transmission.

[0029] Furthermore, a bearing block 201 is fixedly connected to the bottom of the mounting plate 24, a transmission shaft 28 is movably installed through one side of the bearing block 201, and two limit rods 203 are fixedly connected to one side of the back side of the bearing block 201;

[0030] During operation, the transmission shaft 28 is movably limited by the bearing block 201 to ensure that the transmission shaft 28 does not shake while rotating, thereby facilitating stable transmission of the transmission shaft 28 .

[0031] Furthermore, a fixed block 202 is movably installed through one end of the transmission shaft 28, two holes are opened on one side of the fixed block 202 and limit rods 203 are fixedly installed in the holes respectively, and a mounting plate 24 is fixedly connected to the top of the fixed block 202;

[0032] During operation, the movable block 204 may sway left and right during displacement due to the single-point support of the threaded shaft 29. The limit rod 203 is connected to the movable block 204 to limit the left and right movement of the movable block 204, ensuring that the movable block 204 drives the template 11 to move horizontally.

[0033] Furthermore, a movable block 204 is penetrated and movably connected to one side of the limiting rod 203, a threaded groove 205 is provided on one side of the movable block 204, a threaded shaft 29 adapted thereto is movably mounted on the inner wall of the threaded groove 205, a template 11 is fixedly connected to the bottom of the movable block 204, and a fixed block 202 is fixedly connected to the top of another template 11;

[0034] During operation, the thread groove 205 is opened by the movable block 204 so that the thread groove 205 cooperates with the threaded shaft 29 to convert the rotational motion of the threaded shaft 29 into the linear motion of the movable block 204 , thereby gradually reducing the gap between the two templates 11 through the movement of the movable block 204 .

[0035] Working principle: By driving the servo motor 21, the first transmission gear 22 is rotated, and the first transmission gear 22 transmits the second transmission gear 27 through the transmission belt 23, so that the second transmission gear 27 drives the threaded shaft 29 to rotate synchronously. When the threaded shaft 29 rotates, it cooperates with the thread groove 205 corresponding to the movable block 204 to convert the rotational movement of the threaded shaft 29 into the linear movement of the movable block 204, so that the movable block 204 performs relative displacement movement. When the threaded shaft 29 moves clockwise, the movable block 204 moves to the side of the fixed block 202, and the fixed template 11 is linked and synchronously moved through the movable block 204, so that the gap between the two templates 11 becomes smaller. At this time, the gap between the two templates 11 is aligned with the position where the contact rail 3 under the subway needs to be positioned and drilled. When one side of the two templates 11 contacts the contact rail 3 under the subway, the auxiliary mold body 1 is limited, and the auxiliary mold body 1 is fixed on the contact rail 3 under the subway to carry out drilling operations.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A contact rail drilling auxiliary mold with a limiting component, characterized in that: The invention comprises an auxiliary mold body (1) and a limit assembly (2); the limit assembly (2) is installed with a servo motor (21); a first transmission gear (22) is fixedly installed on one side of the servo motor (21); a transmission belt (23) is transmission-connected around the first transmission gear (22); the other side of the transmission belt (23) is transmission-connected with a second transmission gear (27); a transmission shaft (28) passes through and is fixedly connected to one side of the back side of the second transmission gear (27); the other end of the transmission shaft (28) is fixedly connected to a threaded shaft (29); The auxiliary mold body (1) comprises two templates (11), one side of the two templates (11) is respectively provided with a plurality of positioning holes (12), one side of the two templates (11) is respectively provided with a plurality of card slots (13), a subway contact rail (3) is movably connected between the two templates (11), a mounting plate (24) is fixedly installed at the bottom of the servo motor (21), two support blocks (25) are fixedly connected to the top of the mounting plate (24), and a limit plate is fixedly connected between the two support blocks (25). (26), one side of the back side of the limit plate (26) is fixedly mounted on one side of the servo motor (21), a bearing block (201) is fixedly connected to the bottom of the mounting plate (24), a transmission shaft (28) is passed through and movably mounted on one side of the bearing block (201), two limit rods (203) are fixedly connected to one side of the back side of the bearing block (201), one end of the transmission shaft (28) is passed through and movably mounted on a fixed block (202), one side of the fixed block (202) is provided with two holes and two holes are respectively provided in the holes. The limiting rod (203) is fixedly installed, the top of the fixed block (202) is fixedly connected to the mounting plate (24), one side of the limiting rod (203) passes through and is movably connected to a movable block (204), one side of the movable block (204) is provided with a threaded groove (205), the inner wall of the threaded groove (205) is movably installed with a threaded shaft (29) adapted thereto, the bottom of the movable block (204) is fixedly connected to the template (11), and the top of another template (11) is fixedly connected to the fixed block (202).

Images