A traction device

Abstract

The present invention discloses a towing device, comprising a tractor, a utility vehicle, a towing hook, and a drive assembly. The utility vehicle is provided with a docking seat with an opening. The towing hook is rotatably mounted on the tractor, and a clamping block is provided at one end of the towing hook near the docking seat. The drive assembly is mounted on the tractor, and the drive assembly is connected to and drives the towing hook to rotate clockwise or counterclockwise so that the clamping block of the towing hook can engage or disengage with the opening of the docking seat. The towing device has a simple structure and is easy to control. It can realize automatic disconnection and connection between the tractor and the utility vehicle, improve roller replacement efficiency, save labor costs, and avoid safety hazards during operation.

Description

Technical Field

[0001] The present invention relates to the field of trailer devices, in particular to a traction device. Background Art

[0002] In recent years, with the rapid development of the steel industry, companies have placed higher demands on production efficiency and product quality. How to improve production efficiency and reduce production costs while improving steel product quality has become a top priority for every steel company.

[0003] Taking steel section production as an example, the time for changing rolls in rough rolling directly affects the production efficiency of the steel section production line. Each time the existing roll-changing tractor leading device is used, it is necessary to manually rotate the tow hook and match the pins and holes to complete the disconnection and connection of the tractor and the functional vehicle. Sometimes it even requires the cooperation of multiple people to complete the task, which greatly increases labor costs and roll-changing time, and there are certain safety hazards, which seriously affects production efficiency and corporate benefits. Summary of the Invention

[0004] The object of the present invention is to provide a traction device for reducing roller changing time, saving labor costs and improving production efficiency.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A traction device, comprising:

[0007] tractor;

[0008] A functional vehicle, wherein the functional vehicle is provided with a docking seat, and the docking seat is provided with an opening;

[0009] A towing hook, the towing hook being rotatably mounted on the tractor, and a clamping block being provided at one end of the towing hook close to the docking seat;

[0010] A drive assembly is provided on the tractor, and the drive assembly is connected to and drives the towing hook to rotate clockwise / counterclockwise so that the clamping block of the towing hook can be engaged with or disengaged from the opening of the docking seat.

[0011] In an optional solution, the drive assembly includes:

[0012] a connecting arm, the connecting arm being arranged on the periphery of the towing hook;

[0013] An electro-hydraulic cylinder is provided on the tractor, and a drive shaft of the electro-hydraulic cylinder is movably connected to the connecting arm to drive the towing hook to rotate clockwise / counterclockwise.

[0014] In an optional solution, a bracket is provided on a side of the tractor vehicle close to the functional vehicle, and the electro-hydraulic cylinder is detachably provided on the bracket.

[0015] In an optional solution, a first proximity switch and a second proximity switch are respectively provided on both sides of the connecting arm;

[0016] The first proximity switch is configured to send an electrical signal to the drive assembly in response to the engaging position when the tow hook rotates;

[0017] The second proximity switch is configured to send an electrical signal to the drive assembly in response to a disengaged position when the tow hook rotates.

[0018] In an optional solution, the drive assembly includes:

[0019] A gear box, wherein the gear box is provided on the tractor, and an output end of the gear box is connected to the towing hook;

[0020] A motor is connected to the input end of the gear box to drive the towing hook to rotate clockwise / counterclockwise.

[0021] In an optional solution, the opening of the docking seat is a C-shaped structure;

[0022] The clamping block of the towing hook is a T-shaped structure.

[0023] In an optional solution, an entry and exit chamfer is provided on the opening of the docking seat.

[0024] In an optional solution, a buffer layer is provided on the outer side of the block and / or the inner side of the opening.

[0025] In an optional solution, the buffer layer is a rubber layer, and the thickness of the rubber layer is not less than 10 mm.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least: the traction device has a simple structure, is easy to control, can realize the automatic disconnection and connection of the tractor and the functional vehicle, improves the roller changing efficiency, saves labor costs, and avoids safety hazards in the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the disengaged state of the traction device according to an embodiment of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the engaging state of a traction device according to an embodiment of the present invention.

[0029] Figure 3 It is a structural schematic diagram of a drive assembly according to an embodiment of the present invention.

[0030] Figure 4 It is a structural schematic diagram of a traction device in a disengaged state according to another embodiment of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the engaging state of a traction device according to another embodiment of the present invention.

[0032] Figure 6 It is a schematic diagram of the connection structure between the towing hook and the docking seat according to an embodiment of the present invention.

[0033] In the figure: 1. Tractor; 2. Functional vehicle; 3. Docking seat; 31. Opening; 32. Entry and exit chamfers; 4. Tow hook; 41. Block; 5. Drive assembly; 51. Connecting arm; 52. Electro-hydraulic cylinder; 53. Bracket; 54. Gearbox; 55. Motor; 6. First proximity switch; 7. Second proximity switch; 8. Buffer layer. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the drawings represent identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0035] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but can be modified as needed, and all such modifications are within the scope of protection of the present invention.

[0036] See also Figures 1 to 5 As shown, the present invention provides a traction device, including a tractor 1, a functional vehicle 2, a docking seat 3, a towing hook 4 and a drive assembly 5.

[0037] The tractor 1 has a strong pulling capacity and can drive the functional vehicle 2 to achieve mobile operations. The functional vehicle 2 is a vehicle body with certain functions, for example, it can be a roller changing vehicle, a charging vehicle, a heat preservation vehicle, a transport vehicle, etc. Since the tractor 1 and the functional vehicle 2 are both existing technologies, they will not be described in detail here.

[0038] The following describes the application of functional vehicle 2 as a roll changing vehicle in the roll changing process.

[0039] The docking seat 3 is generally a block-shaped piece and can be made of high-strength metals such as carbon steel, alloy steel, etc. to meet the strength and rigidity requirements required for traction. The docking seat 3 is set on the functional vehicle 2, and for example, it can be welded to the head position of the functional vehicle 2 to facilitate docking with the tractor 1. The docking seat 3 is provided with an opening 31. Preferably, the opening 31 is a C-shaped structure. Due to its special constriction, it can well limit the matching parts (such as the block 41 of the tow hook 4). In addition to the C-shaped structure, the opening 31 can also have other shapes similar to the above-mentioned constriction, which is not limited here.

[0040] The towing hook 4 is generally a shaft-shaped member, and is also made of high-strength metal such as carbon steel or alloy steel. The towing hook 4 is rotatably mounted on the tractor 1, for example, at the rear of the tractor 1, and a clamping block 41 is provided at one end thereof near the docking seat 3. Preferably, the clamping block 41 is a T-shaped structure, so as to engage or disengage with the opening 31. Specifically, the thickness of the clamping block 41 needs to be smaller than the constriction of the opening 31, and the width of the clamping block 41 needs to be larger than the constriction of the opening 31. Figure 1 and Figure 4 When the block 41 rotates to the vertical state, the towing hook 4 can be disengaged from the docking seat 3 through the shrinkage, which is the disengagement position; continue to see Figure 2 and Figure 5 When the block 41 is rotated to a horizontal state, the towing hook 4 is stuck in the docking seat 3. This is the clamping position. By rotating the block 41 to two different positions, the towing hook 4 and the docking seat 3 can be connected or disconnected.

[0041] The drive assembly 5 is provided on the tractor 1. The drive assembly 5 is connected to and drives the towing hook 4 to rotate clockwise / counterclockwise so that the clamping block 41 of the towing hook 4 can be engaged with or disengaged from the opening 31 of the docking seat 3. The drive assembly 5 can adopt a hydraulic cylinder, an air cylinder, a motor, an electric push rod or other drive components, and there is no specific limitation.

[0042] See also Figures 1 to 3In some embodiments, the driving assembly 5 includes a connecting arm 51 and an electro-hydraulic cylinder 52, wherein the connecting arm 51 is arranged on the periphery of the towing hook 4. Exemplarily, the connecting arm 51 can be directly welded to the periphery of the towing hook 4, or the connecting arm 51 can be installed on the periphery of the towing hook 4 through a pipe kit (not shown); the electro-hydraulic cylinder 52 is arranged on the tractor 1, and specifically, a bracket 53 can be provided on the side of the tractor 1 close to the functional vehicle 2. The electro-hydraulic cylinder 52 is detachably arranged on the bracket 53 to facilitate later maintenance or replacement. The drive shaft of the electro-hydraulic cylinder 52 is movably connected to the connecting arm 51, for example, in a hinged manner. The electro-hydraulic cylinder 52 controls the extension and retraction of the drive shaft to drive the towing hook 4 to rotate clockwise / counterclockwise. Furthermore, a first proximity switch 6 and a second proximity switch 7 are respectively provided on both sides of the connecting arm 51. The first proximity switch 6 is configured to send an electrical signal to the driving component 5 in response to the engaged position when the tow hook 4 rotates, and the second proximity switch 7 is configured to send an electrical signal to the driving component 5 in response to the disengaged position when the tow hook 4 rotates, thereby realizing automatic control of the engagement or disengagement of the tow hook 4 and the docking seat 3.

[0043] The reason why this embodiment uses the electric hydraulic cylinder 52 instead of the hydraulic cylinder is that: although the thrust of the electric hydraulic cylinder 52 is slightly less than that of the hydraulic cylinder, it occupies a small area and only needs to be connected to electricity and refueled for use, which is convenient for on-site wiring and layout. The hydraulic cylinder not only requires hydraulic pipelines but also requires the addition of a small hydraulic station on the tractor 1, which greatly increases the cost and maintenance difficulty.

[0044] Alternatively, see Figures 4 to 5 In other embodiments, the drive assembly 5 includes a gear box 54 and a motor 55, wherein the gear box 54 is provided on the tractor 1, preferably fixed at the rear of the tractor 1, and the gear box 54 is used to increase the output torque. The towing hook 4 is partially passed through the gear box 54 and connected to its output end, and the motor 55 is connected to the input end of the gear box 54. The motor 55 can drive the towing hook 4 to rotate clockwise / counterclockwise, and can also realize automatic control of the engagement or disengagement of the towing hook 4 and the docking seat 3. It also has the advantages of simple structure and easy operation, and greatly reduces cost and maintenance difficulty.

[0045] See also Figure 6 As shown, in a specific embodiment, the opening 31 of the docking seat 3 is provided with entry and exit chamfers 32, which are specifically located at both ends of the necking, thereby facilitating the plugging and unplugging operation of the towing hook 4 and improving the smoothness of the operation.

[0046] Still see Figure 6In a specific embodiment, a buffer layer 8 is provided on the outer side of the block 41 and / or the inner side of the opening 31. At the moment of docking or towing, the buffer layer 8 can absorb the impact force generated by the collision between the towing hook 4 and the docking seat 3, alleviate the structural deformation caused by the impact, and extend the practical life of the docking seat 3 and the towing hook 4. At the same time, the buffer layer 8 fills the gap between the docking seat 3 and the towing hook 4, which can reduce the noise pollution caused by friction during operation.

[0047] Preferably, the buffer layer 8 is a rubber layer. Since rubber is elastic and has good wear resistance and elasticity, it can be used as the buffer layer 8. The thickness of the rubber layer is not less than 10 mm. For example, the thickness of the rubber layer can be 10 mm, 12 mm, 16 mm, etc. to ensure that the performance of the buffer layer 8 is not affected.

[0048] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes shall fall within the scope of protection of the claims of the present invention.

Claims

1. A traction device, characterized in that: include: Tractor (1); A functional vehicle (2), wherein the functional vehicle (2) is provided with a docking seat (3), and the docking seat (3) is provided with an opening (31); A towing hook (4), the towing hook (4) being rotatably mounted on the tractor (1), and a clamping block (41) being disposed at one end of the towing hook (4) close to the docking seat (3); A drive assembly (5), the drive assembly (5) being arranged on the tractor (1), the drive assembly (5) being connected to and driving the towing hook (4) to rotate clockwise / counterclockwise, so that the clamping block (41) of the towing hook (4) can be engaged with or disengaged from the opening (31) of the docking seat (3); Wherein, the driving component (5) comprises: A bracket (53) is provided on a side of the tractor (1) close to the functional vehicle (2); A connecting arm (51) is arranged on the periphery of the towing hook (4); An electro-hydraulic cylinder (52) is detachably mounted on the bracket (53), and a drive shaft of the electro-hydraulic cylinder (52) is movably connected to the connecting arm (51) to drive the towing hook (4) to rotate clockwise or counterclockwise; Furthermore, a first proximity switch (6) and a second proximity switch (7) are respectively provided on both sides of the connecting arm (51); wherein the first proximity switch (6) is configured to send an electrical signal to the driving assembly (5) in response to a latching position when the towing hook (4) rotates, and the second proximity switch (7) is configured to send an electrical signal to the driving assembly (5) in response to a disengagement position when the towing hook (4) rotates.

2. The traction device according to claim 1, characterized in that The opening (31) of the docking seat (3) is a C-shaped structure; The clamping block (41) of the towing hook (4) is a T-shaped structure.

3. The traction device according to claim 1, characterized in that The opening (31) of the docking seat (3) is provided with an entry and exit chamfer (32).

4. The traction device according to claim 1, characterized in that A buffer layer (8) is provided on the outer side of the block (41) and / or the inner side of the opening (31).

5. The traction device according to claim 4, characterized in that: The buffer layer (8) is a rubber layer, and the thickness of the rubber layer is not less than 10 mm.

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