Platform telescoping mechanism of wrecker

Abstract

The utility model relates to a platform telescopic mechanism of a wrecker, which belongs to the field of wreckers and comprises a wrecker body, a telescopic platform slidably connected to the top of the wrecker body and two protective boxes fixedly connected to the top of the telescopic platform, and protective mechanisms extending to the outside of the protective boxes are arranged in the two protective boxes. A locking mechanism is arranged at the top of the telescopic platform, the protection mechanism comprises a double-shaft motor fixedly installed on the inner bottom wall of the protection box, and threaded rods are fixedly connected to the two output ends of the double-shaft motor. According to the platform telescopic mechanism of the wrecker, a double-shaft motor is started to work through a controller to drive two threaded rods to rotate to drive a threaded block, a connecting rod and a second hinge seat to be close to or away from each other, lifting of a shielding plate is achieved, the height of the shielding plate can be adjusted, and the shielding plate can be used according to fault vehicles of different sizes; and the advantage of good protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tow trucks, in particular to a platform telescopic mechanism of a tow truck. Background Art

[0002] During the driving process, breakdowns or accidents are inevitable, especially on highways. The tow truck has the function of moving broken-down vehicles and illegal urban vehicles. By connecting the broken-down or accident-prone car with the rear towing arm of the tow truck, the tow truck can tow the accident car away.

[0003] The platform telescopic mechanism of the tow truck is needed during the use of the tow truck. The Chinese utility model patent with the announcement number CN210760419U discloses a telescopic device for the flatbed of the tow truck, including a flatbed and a mounting frame, a first mounting frame is installed on the left side of the flatbed, and a first supporting leg is arranged inside the first mounting frame, a connecting plate is arranged on the right side of the flatbed, and a first slide groove is opened inside the connecting plate, and the first slide groove is connected to the first slider, a first support plate is installed on the right side of the connecting plate, and a second slide groove is opened inside the first support plate, and the second slide groove is connected to the second slider, a second support plate is arranged on the right side of the first support plate, and a tooth block is installed on the outer surface of the connecting plate, and the tooth block is connected to the gear. The utility model automatically adjusts the length of the flatbed according to the vehicle to be rescued, so as to prevent some larger vehicles from being unable to be cleared, causing road congestion and affecting people's travel, thereby improving the overall practicality of the device.

[0004] However, when the telescopic device of the flatbed of the utility model tow truck is used to move the broken-down vehicle, since the tow truck is not convenient to protect according to the size of the broken-down vehicle, it is easy to lead to low protection of the broken-down vehicle, and it is not convenient to lock the broken-down vehicle, which will inevitably cause secondary damage, seriously reducing the practicality of the tow truck and failing to meet the use requirements. Therefore, a platform telescopic mechanism of the tow truck is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a platform telescopic mechanism for a tow truck, which has the advantages of good protection effect and strong practicality, and solves the problem that the telescopic device of the flat plate of the existing tow truck is not easy to protect according to the size of the faulty vehicle when moving the faulty vehicle, which easily leads to low protection of the faulty vehicle and is not easy to lock the faulty vehicle, which inevitably causes secondary damage, seriously reducing the practicality of the tow truck and failing to meet the use requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a platform telescopic mechanism of a tow truck, comprising a tow truck body, a telescopic platform slidably connected to the top of the tow truck body, and two protective boxes fixedly connected to the top of the telescopic platform, wherein the interiors of the two protective boxes are both provided with protective mechanisms extending to the outside thereof, and the top of the telescopic platform is provided with a locking mechanism;

[0007] The protection mechanism includes a double-axis motor fixedly mounted on the inner bottom wall of the protection box, the two output ends of the double-axis motor are fixedly connected with threaded rods, the exteriors of the two threaded rods are threadedly connected with threaded blocks, the tops of the two threaded blocks are fixedly connected with connecting blocks, the tops of the two connecting blocks are fixedly connected with a first hinged seat, the interiors of the two first hinged seats are hinged with connecting rods, the ends of the two connecting rods away from the first hinged seat are hinged with a second hinged seat, and the tops of the two second hinged seats are fixedly connected with shielding plates;

[0008] The locking mechanism includes a fixing seat fixedly connected to the top of the telescopic platform and a reduction motor fixedly installed inside the telescopic platform. Two laser ranging sensors are fixedly installed outside the fixing seat, and a locking plate is fixedly connected to the output shaft of the reduction motor.

[0009] Furthermore, the threads of the two threaded rods are opposite to each other, and the two threaded rods are symmetrically distributed inside the protection box. Bearings that are compatible with the threaded rods are fixedly installed inside the protection box.

[0010] Furthermore, the two connecting rods are both distributed inside the protection box in an inclined shape, the shielding plate is a solid rectangular parallelepiped, and a movable opening adapted to the shielding plate is opened inside the protection box.

[0011] Furthermore, a slider extending into the interior of the protection box is fixedly connected to the exterior of the shielding plate, a slide groove matching the slider is provided inside the protection box, and the slider and the slide groove are slidably connected.

[0012] Furthermore, a sliding sleeve is fixedly connected to the bottom of the threaded block, a limiting rod matched with the sliding sleeve is fixedly connected to the inside of the protection box, and the sliding sleeve is slidably connected to the outside of the limiting rod.

[0013] Furthermore, the laser ranging sensor is electrically connected to the reduction motor, the locking plate is a solid rectangular parallelepiped, and the outside of the locking plate is fixedly connected with anti-slip rubber.

[0014] Furthermore, the number of the reduction motors and the number of the locking plates are both four, and the four locking plates are distributed in a rectangular shape on the upper surface of the telescopic platform.

[0015] Compared with the prior art, the utility model provides a platform telescopic mechanism for a tow truck, which has the following beneficial effects:

[0016] 1. The platform telescopic mechanism of the tow truck starts the dual-axis motor through the controller to drive the two threaded rods to rotate. The rotation of the two threaded rods drives the threaded block, the connecting block, the first hinge seat, the connecting rod and the second hinge seat to move closer or farther, thereby realizing the lifting and lowering of the shielding plate. The height of the shielding plate can be adjusted, so that the shielding plate can be used according to faulty vehicles of different sizes, thereby improving the stability of the faulty vehicle when moving, avoiding secondary accidents caused by the faulty vehicle falling, and achieving the advantage of good protection effect.

[0017] 2. The platform telescopic mechanism of the tow truck is connected with the electrical signal of the servo motor through the laser ranging sensor, so that the laser ranging sensor receives the accurate position of the faulty vehicle on the telescopic platform and then the controller starts the reduction motor, which drives the locking plate to rotate, thereby blocking and fixing the four tires of the faulty vehicle, achieving the advantage of strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the structure of the utility model;

[0019] Figure 2 This is a structural cross-sectional view of the protective mechanism of the utility model;

[0020] Figure 3 This is a structural stereogram of the locking plate of the utility model;

[0021] Figure 4 It is a top view of the structure of the locking mechanism of the utility model.

[0022] In the figure: 1 tow truck body, 2 telescopic platform, 3 protection box, 4 protection mechanism, 41 dual-axis motor, 42 threaded rod, 43 threaded block, 44 connecting block, 45 first hinge seat, 46 connecting rod, 47 second hinge seat, 48 sliding sleeve, 49 limit rod, 410 shielding plate, 5 locking mechanism, 51 fixed seat, 52 laser ranging sensor, 53 reduction motor, 54 locking plate. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 4In the present embodiment, a platform telescopic mechanism of a tow truck comprises a tow truck body 1, a telescopic platform 2 slidably connected to the top of the tow truck body 1, and two protective boxes 3 fixedly connected to the top of the telescopic platform 2. The interiors of the two protective boxes 3 are both provided with protective mechanisms 4 extending to the outside thereof, and the top of the telescopic platform 2 is provided with a locking mechanism 5. The protective mechanism 4 comprises a double-axis motor 41 fixedly mounted on the inner bottom wall of the protective box 3, threaded rods 42 are fixedly connected to the two output ends of the double-axis motor 41, threaded blocks 43 are threadedly connected to the outsides of the two threaded rods 42, connecting blocks 44 are fixedly connected to the tops of the two threaded blocks 43, first articulated seats 45 are fixedly connected to the tops of the two connecting blocks 44, connecting rods 46 are hingedly connected to the interiors of the two first articulated seats 45, and second articulated seats 47 are hingedly connected to the ends of the two connecting rods 46 away from the first articulated seats 45, and shielding plates 410 are fixedly connected to the tops of the two second articulated seats 47.

[0025] The dual-axis motor 41 is started by the controller to drive the two threaded rods 42 to rotate. The rotation of the two threaded rods 42 drives the threaded block 43, the connecting block 44, the first hinge seat 45, the connecting rod 46 and the second hinge seat 47 to move closer or farther away, thereby realizing the lifting and lowering of the shielding plate 410. The height of the shielding plate 410 can be adjusted, so that the shielding plate 410 can be used according to faulty vehicles of different sizes, thereby improving the stability of the faulty vehicle when moving, avoiding the faulty vehicle from falling and causing a secondary accident, and achieving the advantage of good protection effect.

[0026] The threads of the two threaded rods 42 are opposite, and the two threaded rods 42 are symmetrically distributed inside the protection box 3. A bearing matching the threaded rods 42 is fixedly installed inside the protection box 3. A sliding sleeve 48 is fixedly connected to the bottom of the threaded block 43, and a limiting rod 49 matching the sliding sleeve 48 is fixedly connected inside the protection box 3. The sliding sleeve 48 is slidably connected to the outside of the limiting rod 49. The sliding sleeve 48 and the limiting rod 49 are provided to improve the stability of the left and right movement of the two threaded blocks 43.

[0027] Specifically, the two connecting rods 46 are both distributed inside the protection box 3 in an inclined shape, the shielding plate 410 is a solid rectangular parallelepiped, and a movable opening adapted to the shielding plate 410 is opened inside the protection box 3 .

[0028] It should be noted that the shielding plate 410 is fixedly connected to the outside with a slider extending into the inside of the protection box 3, and the inside of the protection box 3 is provided with a slide groove adapted to the slider, and the slider and the slide groove are slidably connected. By providing the slider and the slide groove, the stability of the shielding plate 410 moving up and down is improved.

[0029] In addition, the telescopic platform 2 is a conventional technology known to the public in the prior art, so its specific structural composition and working principle will not be described in detail in this article.

[0030] In this embodiment, the locking mechanism 5 includes a fixing seat 51 fixedly connected to the top of the telescopic platform 2 and a reduction motor 53 fixedly installed inside the telescopic platform 2. Two laser distance sensors 52 are fixedly installed outside the fixing seat 51, and a locking plate 54 is fixedly connected to the output shaft of the reduction motor 53. The laser distance sensor 52 is connected to the servo motor 53 through an electrical signal, so that the laser distance sensor 52 receives the accurate position of the faulty vehicle on the telescopic platform 2, and then the controller starts the reduction motor 53 to work, and the reduction motor 53 drives the locking plate 54 to rotate, thereby blocking and fixing the four tires of the faulty vehicle, achieving the advantage of strong practicality.

[0031] The laser distance sensor 52 is electrically connected to the reduction motor 53, the locking plate 54 is a solid rectangular parallelepiped, and the outside of the locking plate 54 is fixedly connected with anti-skid rubber. The model of the laser distance sensor 52 is HC-J030.

[0032] Specifically, the number of the reduction motor 53 and the number of the locking plates 54 are both four, and the four locking plates 54 are distributed on the upper surface of the telescopic platform 2 in a rectangular shape.

[0033] The working principle of the above embodiment is:

[0034] When in use, first control the inclination angle of the telescopic platform 2 through the controller, then control the translation distance of the telescopic platform 2 through the controller, start the dual-axis motor 41 through the controller to drive the two threaded rods 42 to rotate, the rotation of the two threaded rods 42 respectively drives the threaded block 43, the connecting block 44, the first hinge seat 45, the connecting rod 46 and the second hinge seat 47 to move closer or farther, so as to realize the lifting and lowering of the baffle plate 410, that is, the height of the baffle plate 410 can be adjusted, so that the baffle plate 410 can be used according to faulty vehicles of different sizes, and the laser ranging sensor 52 is connected with the electrical signal of the servo motor 53, so that the laser ranging sensor 52 receives the accurate position of the faulty vehicle on the telescopic platform 2, and then the controller starts the reduction motor 53, and the reduction motor 53 drives the locking plate 54 to rotate, thereby blocking and fixing the four tires of the faulty vehicle.

[0035] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail. The device is powered by an external power supply.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A platform telescopic mechanism for a tow truck, characterized in that: The invention comprises a tow truck body (1), a telescopic platform (2) slidably connected to the top of the tow truck body (1), and two protection boxes (3) fixedly connected to the top of the telescopic platform (2), wherein the inside of the two protection boxes (3) is provided with a protection mechanism (4) extending to the outside thereof, and the top of the telescopic platform (2) is provided with a locking mechanism (5); The protection mechanism (4) comprises a double-axis motor (41) fixedly mounted on the inner bottom wall of the protection box (3), the two output ends of the double-axis motor (41) are fixedly connected with threaded rods (42), the exteriors of the two threaded rods (42) are threadedly connected with threaded blocks (43), the tops of the two threaded blocks (43) are fixedly connected with connecting blocks (44), the tops of the two connecting blocks (44) are fixedly connected with first hinged seats (45), the interiors of the two first hinged seats (45) are hinged with connecting rods (46), the ends of the two connecting rods (46) away from the first hinged seats (45) are hinged with second hinged seats (47), and the tops of the two second hinged seats (47) are fixedly connected with shielding plates (410); The locking mechanism (5) comprises a fixing seat (51) fixedly connected to the top of the telescopic platform (2) and a reduction motor (53) fixedly installed inside the telescopic platform (2); two laser distance measuring sensors (52) are fixedly installed outside the fixing seat (51); and a locking plate (54) is fixedly connected to the output shaft of the reduction motor (53).

2. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: The threads of the two threaded rods (42) are opposite to each other. The two threaded rods (42) are symmetrically distributed inside the protection box (3). Bearings matching the threaded rods (42) are fixedly installed inside the protection box (3).

3. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: The two connecting rods (46) are both distributed in an inclined manner inside the protection box (3); the shielding plate (410) is a solid rectangular parallelepiped; and a movable opening adapted to the shielding plate (410) is provided inside the protection box (3).

4. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: The exterior of the shielding plate (410) is fixedly connected to a sliding block extending into the interior of the protection box (3); a sliding groove matching the sliding block is provided inside the protection box (3); the sliding block and the sliding groove are slidably connected.

5. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: A sliding sleeve (48) is fixedly connected to the bottom of the threaded block (43), a limiting rod (49) adapted to the sliding sleeve (48) is fixedly connected to the inside of the protection box (3), and the sliding sleeve (48) is slidably connected to the outside of the limiting rod (49).

6. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: The laser distance measuring sensor (52) is electrically connected to the reduction motor (53); the locking plate (54) is a solid rectangular parallelepiped; and the outside of the locking plate (54) is fixedly connected with anti-slip rubber.

7. The platform telescopic mechanism of a tow truck according to claim 1, characterized in that: The number of the reduction motor (53) and the number of the locking plates (54) are both four, and the four locking plates (54) are distributed in a rectangular shape on the upper surface of the telescopic platform (2).

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