A trailer saddle connection draw pin

Abstract

The application discloses a trailer saddle type connecting towing pin and relates to the technical field of saddle towing pins. The traction mounting piece is provided with a main beam retaining piece for detecting displacement of the traction mounting piece; the traction mounting piece is provided with an anti-reuse piece; the anti-reuse piece is used for limiting connection of the trailer; the bottom of the traction mounting piece is provided with a laser prompting piece; the laser prompting piece is used for facilitating docking of the trailer; the bottom of the traction mounting piece is provided with an anti-abrasion prompting piece; the anti-reuse piece can be matched with the main beam retaining piece to realize automatic control, i.e., when looseness of the pin column or deformation of the trailer traction slide plate occurs, the anti-reuse piece can automatically control the release of the limiting upper blocking ring, so that automatic control for shielding work can be realized; and the problem that the current trailer saddle type connecting towing pin is inconvenient to control and detect deformation and prevent subsequent connection and traction of the trailer is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of saddle towing pin, in particular to a trailer saddle type connecting towing pin. BACKGROUND

[0002] The trailer saddle type connecting towing pin is a core connecting component between the towing vehicle and the semitrailer, directly affecting the transportation safety. The towing pin is usually fixed vertically on the trailer towing slide plate at the front of the semitrailer, embedded in the semicircular hole of the saddle of the towing vehicle, and automatically locked through the saddle hook mechanism. The current trailer saddle type connecting towing pin needs to be installed at the bottom of the trailer towing slide plate. Due to the influence of long-term heavy load, the trailer towing slide plate is prone to deformation, which is inconvenient to control and detect the deformation for preventing subsequent connection with the towing vehicle. Direct towing may cause safety hazards. At the same time, when heavy loads are not unloaded, it is difficult for manual observation to observe the pressure condition of the saddle due to the obstruction of impurities such as lubricating oil, and direct release of towing may cause excessive wear of the saddle and even deformation. At the same time, it is also inconvenient for the driver to quickly dock the towing pin through laser guidance, affecting the docking efficiency.

[0003] Therefore, we propose a trailer saddle type connecting towing pin. SUMMARY

[0004] The present application aims to provide a trailer saddle type connecting towing pin to solve the problem of the current trailer saddle type connecting towing pin being inconvenient to control and detect the deformation for preventing subsequent connection with the towing vehicle as mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a trailer saddle type connecting towing pin, comprising a towing installation part, a main beam placement part is installed on the towing installation part, and the main beam placement part is used for detecting the displacement of the towing installation part; a reuse prevention part is installed on the towing installation part; the reuse prevention part is used for limiting the connection with the trailer; a laser prompting part is installed at the bottom of the towing installation part; the laser prompting part is used for facilitating the docking with the trailer; a wear prevention prompting part is installed at the bottom of the towing installation part; the wear prevention prompting part is used for preventing excessive wear of the saddle; the towing installation part comprises a towing flange plate and a pin column, a circle of bolt holes is arranged on the towing flange plate, and the pin column is fixedly installed at the bottom of the towing flange plate; the pin column is used for docking with the saddle.

[0006] Preferably, the towing installation part further comprises a placement cover, a positioning plate and a ball head, a circle of screw holes is arranged on the placement cover, the towing flange plate is fixedly installed in the circle of screw holes in the placement cover through a circle of bolts, the placement cover is used for being welded on the trailer towing slide plate, the positioning plate is fixedly installed on the placement cover, and a thimble is arranged on the inner side of the positioning plate; the ball head is fixedly installed at the top of the towing flange plate.

[0007] Preferably, the main beam retention piece comprises: a main beam retention frame, a detection cylinder, an arc-shaped elastic sheet and a prompt light, the main beam retention frame is provided with two through holes; the two through holes of the main beam retention frame are used for being mounted in the inner side of the trailer main beam through bolts; the detection cylinder is fixedly installed on the main beam retention frame; an arc-shaped elastic sheet is fixedly installed on the inner side of the detection cylinder; the inner side of the arc-shaped elastic sheet is arc-shaped; a gap is arranged between the ball head and the arc-shaped elastic sheet; the lamp beads, the ball head and the arc-shaped elastic sheet of the prompt light are connected in series with a battery power supply; the prompt light is used for being fixedly installed on the outer side of the trailer apron; the prompt light is connected with the ball head and the arc-shaped elastic sheet through wires; the prompt light is provided with two lamp beads.

[0008] Preferably, the anti-reuse piece comprises: lifting slide columns, upper retaining rings, lifting frames and tension springs, two lifting slide columns are slidingly inserted on the traction flange plate and pass through the retention cover; upper retaining rings are fixedly installed at the bottom of the two lifting slide columns and are sleeved on the pin columns; lifting frames are fixedly installed at the top of the two lifting slide columns and are arc-shaped; tension springs are sleeved on the two lifting slide columns and are connected between the lifting frames and the retention cover; the lifting frame is located on the outer side of the detection cylinder.

[0009] Preferably, the anti-reuse piece further comprises: positioning columns and shielding electromagnets, the positioning columns are slidingly inserted on the lifting frame; the end of the positioning column is inserted into the insertion hole on the positioning plate; the shielding electromagnets are fixedly installed in the lifting frame; the positioning column is aligned with the shielding electromagnet; the spring is sleeved in the lifting frame; the spring sleeved in the lifting frame is connected between the positioning column and the shielding electromagnet.

[0010] Preferably, the shielding electromagnet, the ball head and the arc-shaped elastic sheet are connected in series with a battery power supply.

[0011] Preferably, the laser prompt piece comprises: a prompt rotating shell and a positioning bolt, the prompt rotating shell is rotatably sleeved at the bottom of the pin column; the positioning bolt is threadedly connected on the prompt rotating shell; the end of the positioning bolt passes through the prompt rotating shell; the end of the positioning bolt is extruded and fitted to the bottom of the pin column; the positioning bolt is provided with a hand wheel; the end of the prompt rotating shell protrudes from the bottom of the pin column.

[0012] Preferably, the laser prompt piece further comprises: a laser lamp, the laser lamp is fixedly installed on the prompt rotating shell; the laser lamp is used for laser irradiation of the saddle; the laser lamp is used for assisting in positioning the vehicle head retreat path.

[0013] Preferably, the anti-wear prompting piece comprises: a prompting sleeve and a sliding column, the prompting sleeve is fixedly installed at the bottom of the traction flange plate, the sliding column is sleeved in the prompting sleeve, the end of the sliding column is in an arc structure, the end of the sliding column is extruded and attached to the upper surface of the saddle, the spring is sleeved in the prompting sleeve, and the spring in the prompting sleeve is connected to the top of the sliding column.

[0014] Preferably, the anti-wear prompting piece further comprises: a switch, the switch is fixedly installed at the top of the sliding column, the switch is located on the inner side of the spring sleeved in the prompting sleeve, and the switch and the lamp bead on the prompting lamp are connected in series with the power supply.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The main beam retaining piece can automatically detect the position of the ball head automatic detection pin, and once the connecting bolt between the traction flange plate and the retaining cover is loose, the pin is shaken or the retaining cover is deformed due to excessive load, etc., the automatic detection is automatically detected, the detection is accurate and direct, and the prompting lamp can directly prompt; the anti-reuse piece can cooperate with the main beam retaining piece to automatically control the dismounting of the limiting check ring when the pin is loose or the trailer traction slide plate is deformed, and can automatically control the shielding work, without affecting the rotation between the saddle and the pin during normal driving of the vehicle, but the subsequent trailer traction connection cannot be performed again, which can automatically control the limiting work, the structure is more reasonable, the trailer traction connection is avoided when the pin has safety hazards, the limiting effect is achieved, and the driver is prompted to maintain the vehicle in a timely manner after discovering the problem.

[0017] The anti-wear prompting piece can detect the fit between the saddle and the trailer traction slide plate, avoid the close fit between the trailer traction slide plate and the saddle due to the load of goods and other factors, directly dismount the trailer without supporting the trailer first, avoid excessive wear between the saddle and the trailer traction slide plate, and improve the safety of dismounting the trailer.

[0018] The laser prompting piece can guide the worker to align the saddle, the laser prompting piece can rotate to adjust the laser positioning angle, the worker can be conveniently connected, and the operation is more intuitive without complicated back-and-forth adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the whole structure of the trailer saddle type connection traction pin of the present application.

[0020] Figure 2A schematic diagram of a top structure of a hitch pin for a saddle-type connection of a trailer according to the present application;

[0021] Figure 3 A sectional view of an internal structure of a hitch pin for a saddle-type connection of a trailer according to the present application;

[0022] Figure 4 A schematic diagram of a ball head structure according to the present application;

[0023] Figure 5 A schematic diagram of a main beam retaining member structure according to the present application;

[0024] Figure 6 A schematic diagram of a laser prompting member structure according to the present application; Figure 3 An enlarged view of a B region structure according to the present application;

[0025] Figure 7 A schematic diagram of a reuse prevention member structure according to the present application;

[0026] Figure 8 An enlarged view of a D region structure according to the present application; Figure 4

[0027] A schematic diagram of a laser prompting member structure according to the present application; Figure 9

[0028] An enlarged view of an E region structure according to the present application. Figure 10 Figure 4 In the figure: 1, hitch mounting member; 101, hitch flange plate; 1011, pin post; 102, retaining cover; 103, positioning plate; 104, ball head; 2, main beam retaining member; 201, main beam retaining frame; 2011, detection cylinder; 202, arc-shaped elastic sheet; 203, prompting light; 3, reuse prevention member; 301, lifting slide post; 302, upper retaining ring; 303, lifting frame; 304, tension spring; 305, positioning post; 306, shielding electromagnet; 4, laser prompting member; 401, prompting rotary shell; 402, positioning bolt; 403, laser light; 5, wear-preventing prompting member; 501, prompting slide sleeve; 502, sliding post; 503, switch. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0030] Embodiment one: please refer to

[0031] Figures 1 to 10

[0032] ​​​The application provides a technical scheme: a trailer saddle type connecting towing pin, which comprises a towing mounting piece 1, a main beam retaining piece 2 is installed on the towing mounting piece 1 and is used for detecting displacement of the towing mounting piece 1, an anti-reuse piece 3 is installed on the towing mounting piece 1 and is used for limiting connection of a trailer, a laser prompting piece 4 is installed at the bottom of the towing mounting piece 1 and is used for facilitating docking of the trailer, an anti-wear prompting piece 5 is installed at the bottom of the towing mounting piece 1 and is used for preventing excessive wear of a saddle, and the towing mounting piece 1 comprises a towing flange plate 101 and a pin column 1011, a circle of bolt holes is arranged on the towing flange plate 101, and the pin column 1011 is fixedly installed at the bottom of the towing flange plate 101 and is used for docking the saddle.

[0033] The towing mounting piece 1 further comprises a retaining cover 102, a positioning plate 103 and a ball head 104, a circle of screw holes is arranged on the retaining cover 102, the towing flange plate 101 is fixedly installed in the circle of screw holes of the retaining cover 102 through a circle of bolts, the retaining cover 102 is used for being welded on a trailer towing slide plate, the positioning plate 103 is fixedly installed on the retaining cover 102 and the inner side of the positioning plate 103 is provided with a thimble, and the ball head 104 is fixedly installed at the top of the towing flange plate 101. The main beam retaining piece 2 comprises a main beam retaining frame 201, a detection cylinder 2011, an arc-shaped elastic sheet 202 and a prompt lamp 203, two through holes are arranged on the main beam retaining frame 201 and are used for being installed on the inner side of a trailer main beam through bolts, the detection cylinder 2011 is fixedly installed on the main beam retaining frame 201, a circle of arc-shaped elastic sheets 202 is fixedly installed on the inner side of the detection cylinder 2011, the inner side of the circle of arc-shaped elastic sheets 202 is of an arc-shaped structure, a gap is arranged between the ball head 104 and the circle of arc-shaped elastic sheets 202, the lamp beads on the prompt lamp 203, the ball head 104 and the circle of arc-shaped elastic sheets 202 are connected in series with a battery power supply, the prompt lamp 203 is used for being fixedly installed on the outer side of a trailer baffle, the prompt lamp 203 is connected with the ball head 104 and the circle of arc-shaped elastic sheets 202 through wires, and two lamp beads are arranged on the prompt lamp 203. The main beam retaining piece 2 can realize automatic detection of the position of the pin column 1011 in cooperation with the ball head 104, and once the connecting bolts between the towing flange plate 101 and the retaining cover 102 are loose, the pin column 1011 shakes or the trailer towing slide plate welded with the retaining cover 102 is deformed due to factors such as excessive load, the automatic detection is realized, the detection is accurate and direct, the trailer safety is improved, the prompt lamp 203 can be lighted to prompt once the pin column 1011 is loose or the trailer towing slide plate is deformed, the prompt lamp 203 is installed on the outer side of the trailer baffle, and the driver can directly observe through a rearview mirror or a vehicle inspection vehicle.

[0034] The anti-reuse part 3 comprises: lifting slide posts 301, upper blocking rings 302, lifting frames 303 and tension springs 304, two lifting slide posts 301 are slidingly inserted on the traction flange plate 101, and the two lifting slide posts 301 pass through the retaining cover 102 respectively; the upper blocking rings 302 are fixedly installed at the bottom of the two lifting slide posts 301, and the upper blocking rings 302 are sleeved on the pin post 1011; the lifting frames 303 are fixedly installed at the top of the two lifting slide posts 301, and the lifting frames 303 are arc-shaped structures; the tension springs 304 are sleeved on the two lifting slide posts 301 respectively, and the tension springs 304 are connected between the lifting frames 303 and the retaining cover 102; the lifting frames 303 are located outside the detection cylinder 2011; the anti-reuse part 3 further comprises: positioning posts 305 and shielding electromagnets 306, the positioning posts 305 are slidingly inserted on the lifting frames 303; the positioning posts 305 are inserted into the insertion holes on the positioning plate 103; the shielding electromagnets 306 are fixedly installed inside the lifting frames 303; the positioning posts 305 are aligned with the shielding electromagnets 306; springs are sleeved inside the lifting frames 303; the springs sleeved inside the lifting frames 303 are connected between the positioning posts 305 and the shielding electromagnets 306; the shielding electromagnets 306, the ball head 104 and the arc-shaped spring pieces 202 are connected in series with the battery power supply, and the anti-reuse part 3 can cooperate with the main beam retaining part 2 to automatically control the upper blocking ring 302 to be automatically controlled to be released from the limiting when the pin post 1011 is loose or the trailer traction sliding plate is deformed, so that the shielding work can be automatically controlled, and at the same time, the rotation between the saddle and the pin post 1011 is not affected during normal driving of the vehicle, but subsequent towing connection cannot be performed again, the limiting work can be automatically controlled, the structure is more reasonable, the towing connection work is avoided when the pin post 1011 has a safety hazard, the limiting effect is achieved, the driver is prompted to timely perform maintenance work after discovering the problem, otherwise the trailer hopper will be in a one-time use state and cannot be sustainable, which is difficult to meet the freight demand, the anti-reuse part 3 has a simple structure and direct control, when the actual ball head 104 touches the adjacent arc-shaped spring piece 202, the shielding electromagnet 306 can magnetically attract the positioning post 305, and the positioning plate 103 is no longer inserted for limiting, when the pin post 1011 is released from the limiting of the saddle and is not towed, the upper blocking ring 302 is pulled by the tension spring 304 and is lowered, shielding is formed, the pin post 1011 cannot be inserted into the gap of the saddle, and timely maintenance work is required, thereby further improving the running safety of the trailer.

[0035] The laser prompting part 4 comprises a prompting rotating shell 401 and a positioning bolt 402, the prompting rotating shell 401 is rotationally sleeved at the bottom of the pin column 1011, the positioning bolt 402 is threadedly connected to the prompting rotating shell 401, the end of the positioning bolt 402 penetrates through the prompting rotating shell 401, the end of the positioning bolt 402 is extruded and fitted to the bottom of the pin column 1011, the positioning bolt 402 is provided with a hand wheel, the end of the prompting rotating shell 401 protrudes from the bottom of the pin column 1011, the laser prompting part 4 further comprises a laser lamp 403, the laser lamp 403 is fixedly installed on the prompting rotating shell 401, the laser lamp 403 is used for laser irradiation of the saddle, and the laser lamp 403 is used for auxiliary positioning of the vehicle head back-off path, the laser prompting part 4 can be used to guide the staff by laser, align the saddle, and further facilitate the butt joint of the pin column 1011 to the saddle, the laser prompting part 4 can be used to rotationally adjust the laser positioning angle, the staff can be butt jointed more intuitively, without complicated back-and-forth adjustment, the operation is simple and flexible, when the trailer butt joint is needed, the prompting rotating shell 401 can be first rotated to adjust the angle, the positioning bolt 402 is screwed and extruded and fitted to the bottom of the pin column 1011 for positioning, and at this time, the laser lamp 403 is turned on to emit a ray to irradiate on the saddle for positioning.

[0036] In example two, on the basis of example one, the anti-wear prompt 5 comprises: a prompt sliding sleeve 501 and a sliding column 502, the prompt sliding sleeve 501 is fixedly installed at the bottom of the traction flange plate 101; the sliding column 502 is sleeved in the prompt sliding sleeve 501; the end of the sliding column 502 is in arc structure; the end of the sliding column 502 is extruded and attached to the upper surface of the saddle; the prompt sliding sleeve 501 is sleeved with a spring inside, and the spring inside the prompt sliding sleeve 501 is connected to the top of the sliding column 502; the anti-wear prompt 5 further comprises: a switch 503, the switch 503 is fixedly installed at the top of the sliding column 502; the switch 503 is located inside the spring sleeved in the prompt sliding sleeve 501; the switch 503 and the lamp bead on the prompt lamp 203 are connected in series with the power supply, the use of the anti-wear prompt 5 can realize the detection of the attachment between the saddle and the trailer traction slide plate, avoid the close attachment of the trailer traction slide plate and the saddle due to the load of goods and other factors, directly release the towing without supporting the trailer first, which is easy to cause excessive wear between the saddle and the trailer traction slide plate, even because the load of the trailer head is too high, the saddle support is easy to further cause the deformation of the trailer structure and other factors, improve the safety of towing release, prompt the staff to support the trailer first, avoid the problem that the dust and impurities attached to the grease on the saddle after long-term use will directly affect the observation of the staff whether there is a gap between the trailer traction slide plate and the saddle, when the actual saddle butt joint pin column 1011 needs to be released, if the trailer traction slide plate is pressed to attach the saddle because of the load or without support, at this time the top of the saddle extrudes the sliding column 502, drives the switch 503 to move upward and is extruded by the traction flange plate 101, controls the prompt lamp 203 to light, at this time the spring inside the prompt sliding sleeve 501 is compressed, the trailer front end needs to be supported, then the towing release work is carried out, the towing vehicle can also be deflated or the air suspension is adjusted to lower the vehicle body height, further assist to reduce the height of the saddle and reduce the friction damage.

[0037] The working principle of the embodiment is as follows: first, the retaining cover 102 is welded on the trailer traction slide plate. When the trailer needs to be connected, the angle can be adjusted by rotating the prompt rotating shell 401 first, the positioning bolt 402 is tightened to press and fit the bottom of the pin column 1011. At this time, the laser lamp 403 is turned on to emit rays to the saddle for positioning. The rays are observed to be in the groove of the saddle, and the vehicle can be connected in a straight line. Once the pin column 1011 is loose or the trailer traction slide plate is deformed, the main beam retaining frame 201 is fixed inside the main beam of the trailer, and the detection cylinder 2011 remains unchanged. At this time, the ball head 104 will be displaced. Once the displacement exceeds the standard, the ball head 104 will touch the adjacent arc-shaped elastic sheet 202, and the control prompt lamp 203 will be lit to prompt. The prompt lamp 203 is installed outside the trailer fender. The driver can directly observe it through the rearview mirror or the vehicle inspection. When the actual ball head 104 touches the adjacent arc-shaped elastic sheet 202, the shielding electromagnet 306 can magnetically attract the positioning column 305, and the positioning plate 103 is no longer inserted. At this time, once the pin column 1011 is removed from the saddle, the upper stop ring 302 is pulled down by the pull spring 304, and the upper stop ring 302 can be moved downward. However, when the subsequent trailer connection is required again, the upper stop ring 302 is located in the middle of the pin column 1011, which will form an obstruction and cannot be inserted into the gap of the saddle, preventing repeated trailer connection and use, and requiring timely maintenance work.

[0038] When the actual saddle interface pin column 1011 needs to be removed from the trailer, if the trailer traction slide plate is pressed against the saddle due to heavy load or lack of support, the saddle top will press and slide the column 502, and the switch 503 will be pulled up by the traction flange plate 101. At this time, the spring in the prompt sleeve 501 is compressed, and the front end of the trailer needs to be supported before the trailer is removed. The trailer can also be deflated or the air suspension can be adjusted to lower the vehicle height to further reduce the saddle height and reduce friction damage. When there is a gap between the trailer traction slide plate and the saddle, the spring in the prompt sleeve 501 is compressed, the sliding column 502 remains down and fits on the surface of the saddle, the switch 503 is no longer pressed, and the prompt lamp 203 is also turned off to indicate normality. The end of the sliding column 502 is arc-shaped to prevent jamming with the saddle.

[0039] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0040] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A trailer saddle-type connecting towing pin, comprising a towing mounting component (1), wherein a main beam retainer (2) is mounted on the towing mounting component (1), characterized in that: The main beam retainer (2) is used to detect the displacement of the traction mounting component (1); the traction mounting component (1) is equipped with an anti-reuse component (3); the anti-reuse component (3) is used to restrict the connection of trailers; The bottom of the towing mounting component (1) is equipped with a laser indicator (4); the laser indicator (4) is used to facilitate docking with the trailer; the bottom of the towing mounting component (1) is equipped with an anti-wear indicator (5); the anti-wear indicator (5) is used to prevent excessive wear of the saddle. The traction mounting component (1) includes: a traction flange plate (101), a pin (1011), and a retaining cover (102). The traction flange plate (101) has a ring of bolt holes. The pin (1011) is fixedly installed at the bottom of the traction flange plate (101). The pin (1011) is used to dock with the saddle. The main beam retainer (2) includes: main beam retainer (201), detection cylinder (2011), arc-shaped spring (202) and indicator light (203); The anti-reuse component (3) includes: a lifting slide column (301), an upper retaining ring (302), a lifting frame (303), and a tension spring (304). Two lifting slide columns (301) are slidably inserted into the traction flange plate (101), and the two lifting slide columns (301) pass through the indwelling cover (102) respectively. The upper retaining ring (302) is fixedly installed at the bottom of the two lifting slide columns (301), and the upper retaining ring (302) is sleeved on the pin (1011). The lifting frame (303) is fixedly installed at the top of the two lifting slide columns (301), and the lifting frame (303) has an arc-shaped structure. Tension springs (304) are sleeved on the two lifting slide columns (301), and the tension springs (304) are connected between the lifting frame (303) and the indwelling cover (102). The lifting frame (303) is located outside the detection cylinder (2011).

2. The trailer saddle-type connecting towing pin according to claim 1, characterized in that: The traction mounting component (1) further includes: a positioning plate (103) and a ball head (104). The retention cover (102) is provided with a ring of screw holes. The traction flange plate (101) is fixedly installed in the ring of screw holes on the retention cover (102) by a ring of bolts. The retention cover (102) is used to be welded to the trailer traction plate. The positioning plate (103) is fixedly installed on the retention cover (102), and the inner side of the positioning plate (103) is provided with an insertion hole. The ball head (104) is fixedly installed on the top of the traction flange plate (101).

3. A trailer saddle-type connecting towing pin according to claim 2, characterized in that: The main beam support frame (201) has two through holes; the two through holes on the main beam support frame (201) are used to install on the inner side of the trailer main beam by bolts; a detection cylinder (2011) is fixedly installed on the main beam support frame (201); a ring of arc-shaped springs (202) is fixedly installed on the inner side of the detection cylinder (2011); the inner side of the ring of arc-shaped springs (202) has an arc structure; there is a gap between the ball head (104) and the ring of arc-shaped springs (202); the lamp beads on the indicator light (203), the ball head (104) and the ring of arc-shaped springs (202) are connected in series with a battery power supply; the indicator light (203) is used to be fixedly installed on the outer side of the trailer baffle; the indicator light (203) is connected to the ball head (104) and the ring of arc-shaped springs (202) by wires; the indicator light (203) has two lamp beads.

4. A trailer saddle-type connecting towing pin according to claim 3, characterized in that: The anti-reuse component (3) further includes: a positioning post (305) and a blocking electromagnet (306). The positioning post (305) is slidably inserted into the lifting frame (303). The end of the positioning post (305) is inserted into a hole on the positioning plate (103). The blocking electromagnet (306) is fixedly installed inside the lifting frame (303). The positioning post (305) is aligned with the blocking electromagnet (306). A spring is sleeved inside the lifting frame (303). The spring sleeved inside the lifting frame (303) is connected between the positioning post (305) and the blocking electromagnet (306).

5. A trailer saddle-type connecting towing pin according to claim 4, characterized in that: The shielding electromagnet (306), the ball head (104), and the arc-shaped spring (202) are connected in series with the battery power supply.

6. A trailer saddle-type connecting towing pin according to claim 1, characterized in that: The laser prompting component (4) includes: a prompting rotating shell (401) and a positioning bolt (402). The prompting rotating shell (401) is rotatably sleeved on the bottom of the pin (1011). The prompting rotating shell (401) is threaded with the positioning bolt (402). The end of the positioning bolt (402) passes through the prompting rotating shell (401). The end of the positioning bolt (402) presses against the bottom of the pin (1011). The positioning bolt (402) is provided with a handwheel. The end of the prompting rotating shell (401) protrudes from the bottom of the pin (1011).

7. A trailer saddle-type connecting towing pin according to claim 6, characterized in that: The laser prompting component (4) further includes: a laser lamp (403), which is fixedly installed on the prompting rotating shell (401); the laser lamp (403) is used to illuminate the saddle with a laser; the laser lamp (403) is used to assist in positioning the reversing path of the vehicle head.

8. A trailer saddle-type connecting towing pin according to claim 3, characterized in that: The anti-wear indicator (5) includes: an indicator sleeve (501) and a sliding column (502). The indicator sleeve (501) is fixedly installed at the bottom of the traction flange plate (101). The sliding column (502) is slidably sleeved inside the indicator sleeve (501). The end of the sliding column (502) is an arc-shaped structure. The end of the sliding column (502) is pressed against the upper surface of the saddle. A spring is sleeved inside the indicator sleeve (501), and the spring inside the indicator sleeve (501) is connected to the top of the sliding column (502).

9. A trailer saddle-type connecting towing pin according to claim 8, characterized in that: The anti-wear indicator (5) further includes: a switch (503), which is fixedly installed on the top of the sliding column (502); the switch (503) is located inside the spring sleeved inside the indicator sleeve (501); the switch (503) and the lamp beads on the indicator light (203) are connected in series with a power supply.

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