Lifting device for traction pin of low-flatbed semitrailer

Abstract

The utility model belongs to the technical field of lifting of traction pins of semitrailers, and particularly relates to a lifting device of a traction pin of a low-bed semitrailer, which comprises a pushing plate, the pushing plate comprises two bayonets I and two bayonet locks, a box body is arranged above the pushing plate, a motor is fixedly connected to the inner side wall of the box body, and the motor is fixedly connected to the lower end of the box body. And the driving end of the motor is fixedly connected with a threaded sleeve penetrating through the box body. The motor drives the threaded sleeve to rotate, the threaded rod is affected to vertically move downwards and drives the pushing plate to move downwards, at the moment, the telescopic rod vertically moves downwards, the spring is in a stretching state, when the spring is in the stretching state, force for lifting the pushing plate can be continuously generated, and when the pushing plate moves to a proper distance, the clamping pin penetrates through the first clamping opening, and the pushing plate is pushed to move downwards. And then the telescopic pin is moved to pass through the second bayonet, the rotating rod is rotated to make contact with the bottom of the flat plate, then the clamping rod penetrates through the first clamping hole and the second clamping hole, the rotating rod is fixed, and therefore the fixing work of the flat plate is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of a semitrailer traction pin liftable, in particular to a low-bed semitrailer traction pin liftable device. Background Art

[0002] Low bed trailers are typically used to transport large and heavy equipment, machinery or other cargo, and are designed with a low floor to facilitate loading and unloading.

[0003] Now most low-bed semi-trailers are generally fixed, but with the improvement of living conditions and the increase in purchasing power, more things need to be transported, and fixed flatbeds cannot meet the high-frequency transportation.

[0004] In order to solve the above problems, we proposed a lifting device for the towing pin of a low-bed semi-trailer. Utility Model Content

[0005] The utility model aims to solve the problems in the background technology and proposes a lifting device for a towing pin of a low-bed semi-trailer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-bed semi-trailer towing pin lifting device, including a push plate, the push plate includes two bayonet holes and two bayonet pins, a box body is provided above the push plate, the inner side wall of the box body is fixedly connected to a motor, the bottom of the box body is provided with a through hole, the driving end of the motor is fixedly connected to a threaded sleeve passing through the through hole, the inner side wall of the threaded sleeve is threadedly connected to a threaded rod, the bottom of the threaded rod is rotatably connected to the top of the push plate, the bottom of the box body is fixedly connected to two fixed cylinders, the inner side walls of the top ends of the two fixed cylinders are fixedly connected to springs, the bottom of the spring is fixedly connected to a telescopic rod, and the telescopic rod is slidably connected to the inner side wall of the fixed cylinder, and the bottom of the telescopic rod is fixedly connected to the top of the push plate.

[0007] In the above-mentioned low-bed semi-trailer towing pin lifting device, two bayonet 1s are arranged on the left and right corners of the push plate, a flat plate is provided at the bottom of the push plate, and two bayonet 2s are provided on the outer walls of the two bayonet pins. A blocking plate ring is welded on the outer walls of the two bayonet pins, and a sliding groove is provided at the bottom of the two bayonet pins. A telescopic pin is slidably connected in the sliding groove, and a rotating rod is rotatably connected to the bottom of the telescopic pin.

[0008] In the above-mentioned low-bed semi-trailer towing pin lifting device, the two said bayonet pins include a bayonet rod, the two said bayonet pins are connected to the push plate through a plurality of bolts, the two said bayonet pins are provided with a plurality of bayonet holes 1, and the telescopic pin is provided with a plurality of bayonet holes 2.

[0009] In the above-mentioned low-bed semi-trailer towing pin lifting device, the two fixing cylinders are located on the left and right sides of the bottom of the box body, and the diameters of the bayonet 1 and the bayonet pin are equal.

[0010] In the above-mentioned low-bed semi-trailer towing pin liftable device, the diameter of the two bayonet holes 2 is larger than the diameter of the telescopic pin.

[0011] In the above-mentioned low-bed semi-trailer towing pin lifting device, the diameter of the through hole is equal to the diameter of the threaded sleeve, and the contact portion with the threaded sleeve is coated with lubricating oil.

[0012] In the above-mentioned low-bed semi-trailer towing pin lifting device, the multiple clamping holes 1 are evenly arranged on the outside of the clamping pin, the multiple clamping holes 2 are evenly arranged on the outside of the telescopic pin, and the diameter of the clamping rod is equal to the multiple clamping holes 1 and 2.

[0013] Compared with the existing technology, the advantages of the low-bed semi-trailer traction pin lifting device are:

[0014] The utility model uses a motor to rotate the threaded sleeve, and the threaded rod is affected to move vertically downward, and drives the push plate to move downward. At this time, the telescopic rod moves vertically downward, and the spring is in a stretched state. When the spring is in a stretched state, a force to lift the push plate can be continuously generated. When it moves to a suitable distance, the pin passes through the first bayonet, and then the telescopic pin is moved to pass through the second bayonet, and then the rotating rod is rotated to make it contact with the bottom of the flat plate, and then the rod passes through the first and second bayonet holes to fix the rotating rod, thereby completing the fixing work of the flat plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front cross-sectional view of a lifting device for a towing pin of a low-bed semi-trailer proposed by the utility model;

[0016] Figure 2 This is a front view of a lifting device for a towing pin of a low-bed semi-trailer proposed by the utility model;

[0017] Figure 3 It is a front cross-sectional view of the fixed cylinder.

[0018] In the figure: 1 push plate, 2 box body, 3 motor, 4 threaded sleeve, 5 threaded rod, 6 fixed tube, 7 telescopic rod, 8 flat plate, 9 bayonet, 10 bolt, 11 blocking plate ring, 12 bayonet, 13 telescopic pin, 14 rotating rod, 15 spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 A lifting device for a towing pin of a low-bed semi-trailer includes a push plate 1, the push plate 1 includes two bayonet holes and two bayonet pins 9, a box body 2 is provided above the push plate 1, a motor 3 is fixedly connected to the inner wall of the box body 2, a through hole is provided at the bottom of the box body 2, a threaded sleeve 4 passing through the through hole is fixedly connected to the driving end of the motor 3, a threaded rod 5 is threadedly connected to the inner wall of the threaded sleeve 4, the bottom of the threaded rod 5 is rotatably connected to the top of the push plate 1, the bottom of the box body 2 is fixedly connected to two fixed cylinders 6, the tops of the two fixed cylinders 6 The inner side wall of the end is fixedly connected with a spring 15, the bottom of the spring 15 is fixedly connected with a telescopic rod 7, and the telescopic rod 7 is slidably connected to the inner side wall of the fixed cylinder 6, the bottom of the telescopic rod 7 is fixedly connected to the top of the push plate 1, the two fixed cylinders 6 are located on the left and right sides of the bottom of the box body 2, the diameters of the bayonet 1 and the bayonet 9 are equal, the two fixed cylinders 6 are located on the left and right sides of the bottom of the box body 2, the diameters of the bayonet 1 and the bayonet 9 are equal, the bayonet 9 and the telescopic pin 13 are made of stainless steel alloy, and the stainless steel alloy is made of two or more metals or The material formed by mixing non-metallic elements, stainless steel alloy usually has higher strength and hardness than pure metal, and has better corrosion resistance than pure metal, thereby improving the service life of the bayonet 9 and the telescopic pin 13. The threaded sleeve 4 is rotated by the motor 3, and the threaded rod 5 is affected to move vertically downward, and drives the push plate 1 to move downward. At this time, the telescopic rod 7 moves vertically downward, and the spring 15 is in a stretched state. When the spring 15 is in a stretched state, a force for lifting and pulling the push plate 1 can be continuously generated. When it moves to a suitable distance, the bayonet 9 passes through the bayonet port 1, so that the baffle plate ring 11 contacts the top of the flat plate 8, and then the telescopic pin 13 is moved to pass through the bayonet port 2, and then the bayonet 9 is fixed to the push plate 1 through the bolt 10, and then the rotating rod 14 is rotated to make it contact with the bottom of the flat plate 8, and then the bayonet rod 12 passes through the bayonet hole 1 and the bayonet hole 2 to fix the rotating rod 14, thereby completing the fixing of the flat plate 8. At this time, the pulling force of the spring 15 can improve the stability rate of fixing the flat plate 8, and the lifting operation is realized by moving the push plate 1, thereby improving the practicality of the device.

[0021] Two bayonet 1s are arranged on both sides of the left and right corners of the push plate 1, a flat plate 8 is arranged at the bottom of the push plate 1, and two bayonet 2s are arranged on the flat plate 8. The outer walls of the two bayonet pins 9 are welded with a blocking plate ring 11, and the bottoms of the two bayonet pins 9 are provided with sliding grooves, and a telescopic pin 13 is slidably connected in the sliding groove, and the bottom of the telescopic pin 13 is rotatably connected with a rotating rod 14. The two bayonet pins 9 include a clamping rod 12, and the two bayonet pins 9 are connected to the push plate 1 through a plurality of bolts 10. The two bayonet pins 9 are provided with a plurality of clamping holes 1, and the telescopic pin 13 is provided with a plurality of clamping holes 2. The diameters of the two bayonet 2s are larger than the diameter of the telescopic pin 13, and the plurality of clamping holes 1 are evenly arranged on the outside of the bayonet pin 9, and the plurality of clamping holes 2 are evenly arranged on the outside of the telescopic pin 13, and the diameter of the clamping rod 12 is equal to the plurality of clamping holes 1 and the plurality of clamping holes 2.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device for a towing pin of a low-bed semi-trailer, comprising a push plate (1), characterized in that: The push plate (1) comprises two bayonet holes and two bayonet pins (9). A box body (2) is provided above the push plate (1). The inner side wall of the box body (2) is fixedly connected to a motor (3). The bottom of the box body (2) is provided with a through hole. The driving end of the motor (3) is fixedly connected to a threaded sleeve (4) passing through the through hole. The inner side wall of the threaded sleeve (4) is threadedly connected to a threaded rod (5). The bottom of the threaded rod (5) is rotatably connected to the top of the push plate (1). The bottom of the box body (2) is fixedly connected to two fixed cylinders (6). The inner side walls of the top ends of the two fixed cylinders (6) are fixedly connected to springs (15). The bottom of the spring (15) is fixedly connected to a telescopic rod (7). The telescopic rod (7) is slidably connected to the inner side wall of the fixed cylinder (6). The bottom of the telescopic rod (7) is fixedly connected to the top of the push plate (1).

2. The low-bed semi-trailer traction pin lifting device according to claim 1, characterized in that: Two bayonet 1s are arranged on both sides of the left and right corners of the push plate (1); a flat plate (8) is arranged at the bottom of the push plate (1); the flat plate (8) is provided with two bayonet 2s; the outer walls of the two bayonet pins (9) are welded with a blocking plate ring (11); the bottoms of the two bayonet pins (9) are provided with a sliding groove; a telescopic pin (13) is slidably connected in the sliding groove; the bottom of the telescopic pin (13) is rotatably connected with a rotating rod (14).

3. The low-bed semi-trailer traction pin lifting device according to claim 2, characterized in that: The two bayonet pins (9) comprise a bayonet rod (12), the two bayonet pins (9) are connected to the push plate (1) via a plurality of bolts (10), the two bayonet pins (9) are provided with a plurality of first bayonet holes, and the telescopic pin (13) is provided with a plurality of second bayonet holes.

4. The low-bed semi-trailer towing pin lifting device according to claim 1, characterized in that: The two fixing cylinders (6) are located on the left and right sides of the bottom of the box body (2), and the diameters of the bayonet 1 and the bayonet pin (9) are equal.

5. The low-bed semi-trailer traction pin lifting device according to claim 2, characterized in that: The diameters of the two bayonet sockets 2 are greater than the diameter of the telescopic pin (13).

6. The low-bed semi-trailer traction pin lifting device according to claim 1, characterized in that: The diameter of the through hole is equal to the diameter of the threaded sleeve (4), and the contact portion with the threaded sleeve (4) is smeared with lubricating oil.

7. The low-bed semi-trailer traction pin lifting device according to claim 3, characterized in that: The plurality of first clamping holes are evenly arranged on the outside of the clamping pin (9), the plurality of second clamping holes are evenly arranged on the outside of the telescopic pin (13), and the diameter of the clamping rod (12) is equal to the plurality of first clamping holes and the plurality of second clamping holes.

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