Portable railway signal trackside equipment fixed test and repeated test device

Abstract

The utility model relates to a portable railway signal trackside equipment fixed retest device which comprises a roller frame, a conveying frame and a line drawing frame. An electric control box is arranged on the roller carrier; the electric control box is in control connection with the roller frame, the conveying frame and the line drawing frame, and the conveying frame is arranged on the roller frame; the line drawing frame is arranged at the end of the conveying frame. The electric control box can control the roller frame to move along the steel rail and synchronously drive the conveying frame and the line drawing frame so as to assist the line drawing frame in drawing a vertical line along the edge of the rail; the electric cabinet can control the conveying frame to slide towards the outer side of the track on the roller frame and synchronously drive the line drawing frame to draw transverse lines on the outer side of the track. The portable railway signal trackside equipment calibration and retest device provided by the utility model can efficiently and safely assist workers in finishing scribing and retest work.

Description

Technical Field

[0001] This utility model belongs to the field of railway construction technology, and in particular relates to a portable railway signal trackside equipment regular retesting device. Background Technology

[0002] The trackside equipment in the signaling system of urban rail transit subway mainly includes signals, switches, axle counters, beacons, etc. Precisely locating the final installation position of the trackside equipment is crucial. Signaling equipment is one of the important devices to ensure railway transportation safety, including signal lights, signals, switch machines, etc. Railway signaling equipment is mainly used to indicate the operating status of trains to ensure traffic safety.

[0003] The existing trackside equipment location measurement and retesting devices for railway signals have certain drawbacks. Traditional trackside equipment location measurement and retesting devices are measuring tapes, which require manual marking. The marking process is inconvenient and not conducive to marking, measuring and retesting the location of trackside equipment for railway signals. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the existing technical problems, this utility model provides a portable railway signal trackside equipment regular retesting device, which can effectively solve the problems in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A portable railway signal trackside equipment re-testing device, characterized in that it comprises: a roller frame, a conveyor frame, and a marking frame;

[0009] An electrical control box is installed on the roller frame;

[0010] The electrical control box is connected to the roller frame, the conveyor frame, and the marking frame for control purposes.

[0011] The conveyor frame is mounted on the roller frame;

[0012] The line drawing frame is located at the end of the conveyor frame;

[0013] The electrical control box can control the roller frame to move along the rail and simultaneously drive the conveyor frame and the marking frame to assist the marking frame in drawing vertical lines along the edge of the rail.

[0014] The electrical control box can control the conveyor frame to slide outward on the roller frame and simultaneously drive the drawing frame to draw horizontal lines on the outside of the track.

[0015] Preferably, the roller frame includes: a plate frame, a passive roller assembly, and an active roller assembly;

[0016] The passive roller assembly and the active roller assembly are arranged side by side at the lower end of the plate frame;

[0017] The electrical control box is mounted on the plate frame and is connected to the active roller assembly for control.

[0018] The plate frame can move on the track by means of the passive roller assembly and the active roller assembly.

[0019] Preferably, the conveyor frame is mounted on the plate frame and can slide on the plate frame under the control of the electrical control box to assist the drawing frame in drawing horizontal lines along the outer side of the track;

[0020] The passive roller assembly includes: a passive roller, a passive grooved wheel, and a passive telescopic spring;

[0021] The passive roller is located at the lower end of the plate frame;

[0022] Both the passive grooved wheel and the passive telescopic spring are disposed at both ends of the passive roller;

[0023] The passive telescopic spring enables the passive grooved wheel to be engaged with the rail, so that the passive grooved wheel can move stably on the rail.

[0024] Preferably, the active roller assembly includes: a roller, a grooved wheel, a telescopic spring, a clamping plate, a first motor, a first gear, and a second gear;

[0025] The roller is located at the lower end of the frame plate;

[0026] The grooved wheel is sleeved on the outer side of the roller near both ends;

[0027] The telescopic spring is sleeved on the outside of the roller at both ends;

[0028] The frame plate has an opening;

[0029] The clamping plate is fixedly installed on the upper surface of the frame plate near the opening;

[0030] The No. 1 motor is fixedly installed on one side of the clamping plate;

[0031] The first gear is fixedly installed at the front end of the first motor's rotating shaft;

[0032] The second gear is fixedly mounted on the roller;

[0033] The front end of the No. 1 motor passes through the through hole in the clamping plate;

[0034] The first gear is located between the first motor and the clamping plate;

[0035] The first gear and the second gear mesh with each other.

[0036] Preferably, the electrical control box is connected to the No. 1 motor for control.

[0037] The first motor can drive the second gear through the first gear to drive the roller to rotate;

[0038] The rotation of the roller can drive the grooved wheel to roll on the rail, thereby driving the roller frame to move on the rail.

[0039] Preferably, the conveyor frame includes: a limiting strip, a sliding sleeve frame, a second motor, a first screw, and an internal thread frame;

[0040] The limiting strip is fixedly installed on the upper surface of the frame plate;

[0041] The sliding frame is fitted onto the limiting plate and can slide on the limiting plate;

[0042] The second motor is fixedly installed inside the circular frame at the rear end of the sliding sleeve frame;

[0043] The front end of the No. 1 screw is inserted into the front end of the sliding sleeve frame;

[0044] The internal threaded frame is sleeved on the outside of the first screw;

[0045] The front end of the second motor is fixedly connected to the rear end of the first screw.

[0046] The sliding sleeve frame passes through a groove on the lower surface of the internal thread frame and is able to slide within the groove.

[0047] Preferably, the sliding sleeve frame is fixedly disposed on the upper surface of the frame plate;

[0048] The electrical control box is connected to the control of the second motor;

[0049] The second motor can drive the first screw to rotate, thereby causing the first screw, the second motor, and the sliding sleeve frame to slide on the limiting plate.

[0050] Preferably, the marking frame includes: a limiting cylinder, a limiting sliding sleeve, a No. 3 motor, a No. 2 screw, a sleeve, a rubber cylinder, and marking chalk;

[0051] The limiting cylinder is fixedly installed on the front surface of the sliding sleeve frame;

[0052] The limiting sleeve is disposed inside the limiting cylinder;

[0053] The No. 3 motor is fixedly installed inside the limiting sleeve;

[0054] The upper end of the second screw is fixedly connected to the lower end of the rotating shaft of the third motor;

[0055] The sleeve is fixedly installed at the lower end of the second screw;

[0056] The rubber tube is fixedly installed inside the sleeve;

[0057] The marking chalk is located inside the rubber tube.

[0058] Preferably, the line drawing frame further includes: a No. 3 screw, a hexagonal nut, a spring washer, and a caster wheel;

[0059] The lower outer wall of the limiting cylinder is provided with an integrally formed mounting part;

[0060] The mounting part is provided with a through hole;

[0061] The No. 3 screw is located in the through hole at the lower end of the limiting cylinder;

[0062] The hexagonal nut and the spring washer are sequentially fitted onto the upper end of the No. 3 screw;

[0063] The universal wheel is fixedly installed at the lower end of the third screw;

[0064] The lower end of the second screw passes through the lower end of the limiting cylinder;

[0065] Both the hexagonal nut and the spring washer are provided with upper and lower sets;

[0066] The mounting part of the limiting cylinder is located between the two hexagonal nuts;

[0067] The spring washer is located between the hexagonal nut and the mounting portion.

[0068] (III) Beneficial Effects

[0069] The beneficial effects of this utility model are:

[0070] The roller frame, conveyor frame, and marking frame enable the railway signal trackside equipment positioning and re-measurement device to move automatically along the railway rails and automatically mark the installation position of the railway signal trackside equipment. This facilitates the marking, measurement, and re-measurement of the railway signal trackside equipment position, and makes subsequent installation of the railway signal trackside equipment easier. The roller frame is responsible for driving the positioning and re-measurement device to move automatically along the railway rails and assists the marking frame in drawing vertical lines. The conveyor frame is responsible for the horizontal movement of the marking frame and assists the marking frame in drawing horizontal lines. The marking frame is responsible for drawing cross marks. Attached Figure Description

[0071] Figure 1 This is a schematic diagram of the overall structure of a portable railway signal trackside equipment re-measurement device according to the present invention;

[0072] Figure 2 This is an exploded view of the roller frame structure of a portable railway signal trackside equipment re-measurement device according to the present invention;

[0073] Figure 3 This is an exploded view of the conveyor frame structure of a portable railway signal trackside equipment retesting device according to the present invention;

[0074] Figure 4 This is an exploded view of the drawing frame structure of a portable railway signal trackside equipment re-measurement device according to the present invention;

[0075] Figure 5 This utility model relates to a portable railway signal trackside equipment regular retesting device. Figure 1 Enlarged diagram of part A in the middle;

[0076] Figure 6 This utility model relates to a portable railway signal trackside equipment regular retesting device. Figure 4 Enlarged schematic diagram of part B in the middle.

[0077] [Explanation of Labels in the Attached Image]

[0078] 1. Roller frame; 101. Frame plate; 102. Roller; 103. Grooved wheel; 104. Telescopic spring; 105. Clamping plate; 106. Motor No. 1; 107. Gear No. 1; 108. Gear No. 2; 2. Conveyor frame; 201. Limiting strip; 202. Sliding sleeve frame; 203. Motor No. 2; 204. Screw No. 1; 205. Internal thread frame; 3. Marking frame; 301. Limiting cylinder; 302. Limiting sliding sleeve; 303. Motor No. 3; 304. Screw No. 2; 305. Sleeve; 306. Rubber cylinder; 307. Marking chalk; 308. Screw No. 3; 309. Hex nut; 310. Spring washer; 311. Caster wheel; 4. Control box. Detailed Implementation

[0079] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0080] like Figures 1-6 As shown: This embodiment discloses a portable railway signal trackside equipment regular retesting device, characterized in that it includes: a roller frame 1, a conveyor frame 2, and a marking frame 3.

[0081] The roller frame 1 is equipped with an electrical control box 4; the electrical control box 4 is connected to the roller frame 1, the conveyor frame 2, and the marking frame 3 respectively.

[0082] In detail, the conveyor frame 2 is mounted on the roller frame 1; the line drawing frame 3 is mounted at the end of the conveyor frame 2; the electrical control box 4 can control the roller frame 1 to move along the rail and simultaneously drive the conveyor frame 2 and the line drawing frame 3 to assist the line drawing frame 3 in drawing vertical lines along the edge of the rail; the electrical control box 4 can control the conveyor frame 2 to slide outward on the roller frame 1 and simultaneously drive the line drawing frame 3 to draw horizontal lines on the outside of the rail.

[0083] In this embodiment, the roller frame 1 includes: a plate frame 101, a passive roller assembly, and an active roller assembly. The passive roller assembly and the active roller assembly are arranged side by side at the lower end of the plate frame 1; the electrical control box 4 is mounted on the plate frame 101 and is controlled and connected to the active roller assembly; the plate frame 101 can move on the track by means of the passive roller assembly and the active roller assembly.

[0084] The conveyor frame 2 is mounted on the plate frame 101 and can slide on the plate frame 101 under the control of the electrical control box 4 to assist the drawing frame 3 in drawing horizontal lines along the outside of the track.

[0085] The passive roller assembly in this embodiment includes: a passive roller shaft, a passive grooved wheel, and a passive telescopic spring; the passive roller shaft is disposed at the lower end of the plate frame; the passive grooved wheel and the passive telescopic spring are disposed at both ends of the passive roller shaft; the passive telescopic spring enables the passive grooved wheel to be engaged on the rail, so that the passive grooved wheel can travel stably on the rail.

[0086] Specifically, the active roller assembly includes: a roller 102, a grooved wheel 103, a telescopic spring 104, a clamping plate 105, a first motor 106, a first gear 107, and a second gear 108.

[0087] The roller 102 is located at the lower end of the frame plate 101; the grooved wheel 103 is sleeved on the outer side of the roller 102 near both ends; the telescopic spring 104 is sleeved on the outer side of the roller 102 at both ends; the frame plate 101 has an opening; the clamping plate 105 is fixedly installed on the upper surface of the frame plate 101 near the opening. The first motor 106 is fixedly installed on one side of the clamping plate 105; the first gear 107 is fixedly installed at the front end of the rotating shaft of the first motor 106. The second gear 108 is fixedly installed on the roller 102; the front end of the first motor 106 passes through the through hole of the clamping plate 105; the first gear 107 is located between the first motor 106 and the clamping plate 105; the first gear 107 and the second gear 108 mesh with each other.

[0088] The electrical control box 4 is connected to the first motor 106; the first motor 106 can drive the second gear 108 through the first gear 107 to drive the roller 102 to rotate; the rotation of the roller 102 can drive the grooved wheel 103 to roll on the rail, thereby driving the roller frame 1 to move on the rail.

[0089] In this embodiment, the conveyor frame 2 includes: a limiting plate 201, a sliding sleeve frame 202, a second motor 203, a first screw 204, and an internal thread frame 205.

[0090] Specifically, the limiting strip 201 is fixedly installed on the upper surface of the frame plate 101; the sliding sleeve frame 202 is sleeved on the limiting strip 201 and can slide on the limiting strip 201; the second motor 203 is fixedly installed in the circular frame at the rear end of the sliding sleeve frame 202; the front end of the first screw 204 is inserted into the front end of the sliding sleeve frame 202; the internal thread frame 205 is sleeved on the outside of the first screw 204; the front end of the second motor 203 is fixedly connected to the rear end of the first screw 204; the sliding sleeve frame 202 passes through the groove on the lower surface of the internal thread frame 205 and can slide in the groove.

[0091] In this embodiment, the sliding sleeve frame 202 is fixedly installed on the upper surface of the frame plate 101; the electrical control box 4 is controlled and connected to the second motor 203; the second motor 203 can drive the first screw 204 to rotate, so as to drive the first screw 204, the second motor 203 and the sliding sleeve frame 202 to slide on the limiting plate 201.

[0092] The line drawing frame 3 includes: a limiting cylinder 301, a limiting sliding sleeve 302, a No. 3 motor 303, a No. 2 screw 304, a sleeve 305, a rubber cylinder 306, and a line drawing chalk 307.

[0093] In this embodiment, the limiting cylinder 301 is fixedly installed on the front surface of the sliding sleeve frame 202; the limiting sliding sleeve 302 is disposed inside the limiting cylinder 301; the third motor 303 is fixedly installed inside the limiting sliding sleeve 302; the upper end of the second screw 304 is fixedly connected to the lower end of the rotating shaft of the third motor 303; the sleeve 305 is fixedly installed at the lower end of the second screw 304; the rubber cylinder 306 is fixedly installed inside the sleeve 305; and the marking chalk 307 is disposed inside the rubber cylinder 306.

[0094] The drawing frame 3 further includes: a No. 3 screw 308, a hexagonal nut 309, a spring washer 310, and a caster wheel 311. The lower outer wall of the limiting cylinder 301 has an integrally formed mounting portion; the mounting portion has a through hole; the No. 3 screw 308 is located within the through hole at the lower end of the limiting cylinder 301. The hexagonal nut 309 and the spring washer 311 are sequentially sleeved on the upper end of the No. 3 screw 308; the caster wheel 311 is fixedly installed on the lower end of the No. 3 screw 305; the lower end of the No. 2 screw 304 passes through the lower end of the limiting cylinder 301; both the hexagonal nut 309 and the spring washer 310 have two sets, upper and lower. The mounting portion of the limiting cylinder 301 is located between the two hexagonal nuts 309; the spring washer 310 is located between the hexagonal nut 309 and the mounting portion.

[0095] In practical applications, such as Figures 1-6 The portable railway signal trackside equipment re-measurement device includes a roller frame 1. A conveyor frame 2 is fixedly installed on the upper surface of the roller frame 1 near the edge. A marking frame 3 is fixedly installed at the front end of the conveyor frame 2. A control box 4 is fixedly installed on the upper surface of the roller frame 1 near one corner. The roller frame 1, conveyor frame 2, and marking frame 3 enable the railway signal trackside equipment re-measurement device to move automatically along the railway rails and automatically mark the installation position of the railway signal trackside equipment. This facilitates the marking, measurement, and re-measurement of the railway signal trackside equipment position, and makes it easier for subsequent installation of the railway signal trackside equipment. The roller frame 1 is responsible for driving the re-measurement device to move automatically along the railway rails and assists the marking frame 3 in drawing vertical lines. The conveyor frame 2 is responsible for the horizontal movement of the marking frame 3 and assists the marking frame 3 in drawing horizontal lines. The marking frame 3 is responsible for drawing cross marks.

[0096] The roller frame 1 includes a frame plate 101, rollers 102, grooved wheels 103, telescopic springs 104, clamping plates 105, a first motor 106, a first gear 107, and a second gear 108. Two rollers 102 are provided, located at the lower end of the frame plate 101. The grooved wheels 103 are fitted onto the outer sides of the rollers 102 near both ends. The telescopic springs 104 are located on the outer sides of the rollers 102 at both ends. The clamping plates 105 are fixedly installed on the upper surface of the frame plate 101 near the opening. The first motor 106 is fixedly installed on one side of the clamping plates 105. The first gear 107 is fixedly installed at the front end of the rotating shaft of the first motor 106. The second gear 108 is fixedly installed on the outer side of the rollers 102. Located in the middle, the front end of motor 106 passes through the through hole of clamping plate 105, gear 107 is located between clamping plates 105, and gear 107 meshes with gear 2; the conveyor frame 2 includes a limiting strip 201, a sliding sleeve frame 202, motor 203, screw 204, and internal thread frame 205; the limiting strip 201 is fixedly installed on the upper surface of the frame plate 101 near the edge, the sliding sleeve frame 202 is sleeved on the outside of the limiting strip 201, motor 203 is fixedly installed in the circular frame at the rear end of the sliding sleeve frame 202, the front end of screw 204 is inserted into the front end of the sliding sleeve frame 202, and the internal thread frame 205 is sleeved on the outside of screw 204. The front end of motor 203 is fixedly connected to the rear end of screw 204. Sliding sleeve 202 passes through the groove on the lower surface of the internal thread frame 205. The marking frame 3 includes a limiting cylinder 301, a limiting sliding sleeve 302, motor 303, screw 304, sleeve 305, rubber sleeve 306, marking chalk 307, screw 308, hexagonal nut 309, spring washer 310, and caster wheel 311. The limiting cylinder 301 is fixedly installed on the front surface of the sliding sleeve 202. The limiting sliding sleeve 302 is located inside the limiting cylinder 301. Motor 303 is fixedly installed inside the limiting sliding sleeve 302. The upper end of screw 304 is fixedly connected to the lower end of the rotating shaft of motor 303. Sleeve 305... 05 is fixedly installed at the lower end of the second screw 304. The rubber cylinder 306 is fixedly installed inside the sleeve 305. The marking chalk 307 is located inside the rubber cylinder 306. The third screw 308 is located in the through hole at the lower end of the limiting cylinder 301. The hexagonal nut 309 is sleeved on the upper end of the third screw 308. The spring washer 310 is sleeved on the upper end of the third screw 308. The universal wheel 311 is fixedly installed at the lower end of the third screw 308. The lower end of the second screw 304 passes through the lower end of the limiting cylinder 301. There are two hexagonal nuts 309 and spring washers 310. The limiting cylinder 301 is located between the hexagonal nuts 309, and the spring washer 310 is located between the hexagonal nuts 309 and the limiting cylinder 301.

[0097] It should be noted that this utility model is a portable railway signal trackside equipment re-measurement device. In use, the grooved wheel 103 is placed on the rail within the roller frame 1, conveyor frame 2, and marking frame 3. The telescopic spring 104 secures the grooved wheel 103 to the rail. The first motor 106 drives the first gear 107 between the clamping plates 105 to rotate, which in turn drives the roller 102 to rotate via the second gear 108. The grooved wheel 103 rotates accordingly, causing the marking frame 3 to move vertically, drawing vertical lines with the marking chalk 307. The second motor 203 drives the first screw 204 to rotate, causing the sliding sleeve frame 202 to slide on the limiting strip 201, changing the position of the marking frame 3. Simultaneously, it allows the marking chalk 307 to draw horizontal lines. Tightening the hexagonal nut 309 adjusts the height of the third screw 308, allowing the caster wheel 311 to rest on the ground. The spring washer 3... 10. To prevent the hexagonal nut 309 from loosening, motor 303 drives screw 304 to rotate. Limiting sleeve 302 moves up and down along the inside of limiting cylinder 301, so that marking chalk 307 keeps against the ground. Rubber cylinder 306 prevents marking chalk 307 from sliding out of sleeve 305 and plays an anti-slip role. Roller frame 1, conveyor frame 2 and marking frame 3 enable the railway signal trackside equipment fixed re-measurement device to move automatically along the railway rail and automatically draw the mark of the installation position of the railway signal trackside equipment. This is beneficial for marking, measuring and re-measuring the position of the railway signal trackside equipment, and facilitates the subsequent installation of the railway signal trackside equipment. Among them, roller frame 1 is responsible for driving the fixed re-measurement device to move automatically along the railway rail and assisting marking frame 3 to draw vertical lines. Conveyor frame 2 is responsible for the horizontal movement of marking frame 3 and assisting marking frame 3 to draw horizontal lines. Marking frame 3 is responsible for drawing cross marks.

[0098] The technical principles of this utility model have been described in conjunction with specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A portable railway signal trackside equipment re-measurement device, characterized in that, include: Roller racks, conveyor racks, and marking racks; An electrical control box is installed on the roller frame; The electrical control box is connected to the roller frame, the conveyor frame, and the marking frame for control purposes. The conveyor frame is mounted on the roller frame; The line drawing frame is located at the end of the conveyor frame; The electrical control box can control the roller frame to move along the rail and simultaneously drive the conveyor frame and the marking frame to assist the marking frame in drawing vertical lines along the edge of the rail. The electrical control box can control the conveyor frame to slide outward on the roller frame and simultaneously drive the drawing frame to draw horizontal lines on the outside of the track.

2. The apparatus according to claim 1, characterized in that, The roller frame includes: a plate frame, a passive roller assembly, and an active roller assembly; The passive roller assembly and the active roller assembly are arranged side by side at the lower end of the plate frame; The electrical control box is mounted on the plate frame and is connected to the active roller assembly for control. The plate frame can move on the track by means of the passive roller assembly and the active roller assembly.

3. The apparatus according to claim 2, characterized in that, The conveyor frame is mounted on the plate frame and can slide on the plate frame under the control of the electrical control box to assist the drawing frame in drawing horizontal lines along the outside of the track; The passive roller assembly includes: a passive roller, a passive grooved wheel, and a passive telescopic spring; The passive roller is located at the lower end of the plate frame; Both the passive grooved wheel and the passive telescopic spring are disposed at both ends of the passive roller; The passive telescopic spring enables the passive grooved wheel to be engaged with the rail, so that the passive grooved wheel can move stably on the rail.

4. The apparatus according to claim 3, characterized in that, The active roller assembly includes: a roller, a grooved wheel, a telescopic spring, a clamping plate, a first motor, a first gear, and a second gear; The roller is located at the lower end of the frame plate; The grooved wheel is sleeved on the outer side of the roller near both ends; The telescopic spring is sleeved on the outside of the roller at both ends; The frame plate has an opening; The clamping plate is fixedly installed on the upper surface of the frame plate near the opening; The No. 1 motor is fixedly installed on one side of the clamping plate; The first gear is fixedly installed at the front end of the first motor's rotating shaft; The second gear is fixedly mounted on the roller; The front end of the No. 1 motor passes through the through hole in the clamping plate; The first gear is located between the first motor and the clamping plate; The first gear and the second gear mesh with each other.

5. The apparatus according to claim 4, characterized in that, The electrical control box is connected to the No. 1 motor for control. The first motor can drive the second gear through the first gear to drive the roller to rotate; The rotation of the roller can drive the grooved wheel to roll on the rail, thereby driving the roller frame to move on the rail.

6. The apparatus according to claim 5, characterized in that, The conveyor frame includes: a limiting plate, a sliding sleeve frame, a second motor, a first screw, and an internal thread frame; The limiting strip is fixedly installed on the upper surface of the frame plate; The sliding frame is fitted onto the limiting plate and can slide on the limiting plate; The second motor is fixedly installed inside the circular frame at the rear end of the sliding sleeve frame; The front end of the No. 1 screw is inserted into the front end of the sliding sleeve frame; The internal threaded frame is sleeved on the outside of the first screw; The front end of the second motor is fixedly connected to the rear end of the first screw; The sliding sleeve frame passes through a groove on the lower surface of the internal thread frame and is able to slide within the groove.

7. The apparatus according to claim 6, characterized in that, The sliding sleeve frame is fixedly installed on the upper surface of the frame plate; The electrical control box is connected to the control of the second motor; The second motor can drive the first screw to rotate, thereby causing the first screw, the second motor, and the sliding sleeve frame to slide on the limiting plate.

8. The apparatus according to claim 7, characterized in that, The marking frame includes: a limiting cylinder, a limiting sliding sleeve, a No. 3 motor, a No. 2 screw, a sleeve, a rubber cylinder, and marking chalk; The limiting cylinder is fixedly installed on the front surface of the sliding sleeve frame; The limiting sleeve is disposed inside the limiting cylinder; The No. 3 motor is fixedly installed inside the limiting sleeve; The upper end of the second screw is fixedly connected to the lower end of the rotating shaft of the third motor; The sleeve is fixedly installed at the lower end of the second screw; The rubber tube is fixedly installed inside the sleeve; The marking chalk is located inside the rubber tube.

9. The apparatus according to claim 8, characterized in that, The line drawing frame also includes: a No. 3 screw, a hexagonal nut, a spring washer, and a caster wheel; The lower outer wall of the limiting cylinder is provided with an integrally formed mounting part; The mounting part is provided with a through hole; The No. 3 screw is located in the through hole at the lower end of the limiting cylinder; The hexagonal nut and the spring washer are sequentially fitted onto the upper end of the No. 3 screw; The universal wheel is fixedly installed at the lower end of the third screw; The lower end of the second screw passes through the lower end of the limiting cylinder; Both the hexagonal nut and the spring washer are provided with two sets, one upper and one lower; The mounting part of the limiting cylinder is located between the two hexagonal nuts; The spring washer is located between the hexagonal nut and the mounting portion.

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